WO2021149863A1 - 표시 장치 - Google Patents
표시 장치 Download PDFInfo
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- WO2021149863A1 WO2021149863A1 PCT/KR2020/002805 KR2020002805W WO2021149863A1 WO 2021149863 A1 WO2021149863 A1 WO 2021149863A1 KR 2020002805 W KR2020002805 W KR 2020002805W WO 2021149863 A1 WO2021149863 A1 WO 2021149863A1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/857—Interconnections, e.g. lead-frames, bond wires or solder balls
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H29/00—Integrated devices, or assemblies of multiple devices, comprising at least one light-emitting semiconductor element covered by group H10H20/00
- H10H29/10—Integrated devices comprising at least one light-emitting semiconductor component covered by group H10H20/00
- H10H29/14—Integrated devices comprising at least one light-emitting semiconductor component covered by group H10H20/00 comprising multiple light-emitting semiconductor components
- H10H29/142—Two-dimensional arrangements, e.g. asymmetric LED layout
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/441—Interconnections, e.g. scanning lines
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/60—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs wherein the TFTs are in active matrices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/01—Manufacture or treatment
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/83—Electrodes
- H10H20/831—Electrodes characterised by their shape
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/01—Manufacture or treatment
- H10W20/031—Manufacture or treatment of conductive parts of the interconnections
- H10W20/0698—Local interconnections
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
Definitions
- the present invention relates to a display device.
- OLED organic light emitting display
- LCD liquid crystal display
- a device for displaying an image of a display device includes a display panel such as an organic light emitting display panel or a liquid crystal display panel.
- a light emitting display panel may include a light emitting device.
- a light emitting diode LED
- OLED organic light emitting diode
- An inorganic light emitting diode using an inorganic semiconductor as a fluorescent material has durability even in a high temperature environment, and has an advantage in that blue light efficiency is higher than that of an organic light emitting diode.
- a transfer method using a dielectrophoresis (DEP) method has been developed. Accordingly, research on inorganic light emitting diodes having superior durability and efficiency compared to organic light emitting diodes is continuing.
- An object of the present invention is to provide a display device including an inorganic light emitting device.
- Another object of the present invention is to provide a display device in which a light emitting region and a non-light emitting region are separated so that circuit elements and display elements do not overlap.
- a display device provides a first voltage line extending in a first direction, a data line spaced apart from the first voltage line, extending in the first direction, and extending in the second direction a scan line, a sensing line spaced apart from the scan line and extending in a second direction different from the first direction, disposed on the first voltage line and the data line, and extending in the first direction to face each other first and second inner banks disposed on the first inner bank, a first electrode disposed on the first inner bank and extending in the first direction, a second disposed on the second inner bank and extending in the first direction an electrode and a plurality of light emitting devices disposed between the first electrode and the second electrode, wherein the light emitting device includes a semiconductor core including a light emitting layer and an insulating film surrounding at least a portion of an outer surface of the semiconductor core.
- the distribution line may be electrically connected to the reference voltage line.
- the data line may be disposed between the first voltage line and the reference voltage line, and the sensing line may be disposed between the scan line and the reference voltage division line.
- the first electrode is electrically connected to the first voltage line through a driving transistor, and the second electrode comprises: It may be electrically connected to the second voltage line.
- the second voltage line may further include a portion extending in the second direction, and the portion extending in the second direction of the second voltage line may partially overlap the second electrode in a plan view.
- the first internal bank may partially overlap the first voltage line in a plan view, and the second internal bank may be disposed so as not to overlap the data line in a thickness direction.
- the first voltage line is the second internal bank and extending between the external banks in the first direction
- the data line may overlap a portion of the external bank extending in the first direction in a thickness direction
- At least a portion of the first electrode overlaps with the first electrode and further includes a shielding electrode disposed to surround a region where the light emitting devices are disposed, wherein the shielding electrode includes the first electrode and the light emitting device based on the area where the light emitting devices are disposed. It may be arranged to cover an outer part of the first inner bank.
- the semiconductor core of the light emitting device includes a first semiconductor layer, a second semiconductor layer, and the light emitting layer disposed between the first semiconductor layer and the second semiconductor layer, wherein the insulating film surrounds at least an outer surface of the light emitting layer It can be arranged to
- a display device includes a first substrate, a semiconductor layer disposed on the first substrate, the semiconductor layer including a first active layer of a driving transistor, the first substrate, and the semiconductor layer A first gate insulating layer disposed on the first gate insulating layer, a first gate conductive layer disposed on the first gate insulating layer, the first gate conductive layer including a first gate electrode of the driving transistor, the first gate conductive layer a first interlayer insulating layer disposed on the first interlayer insulating layer, a first data conductive layer disposed on the first interlayer insulating layer, the first data conductive layer including source/drain electrodes of the driving transistor and a first voltage line; A first passivation layer disposed on the first data conductive layer, a first planarization layer disposed on the first passivation layer, a first inner bank and a second inner bank disposed on the first planarization layer and spaced apart from each other a bank, a first electrode disposed on the first inner bank and a second electrode disposed on
- the first electrode may be electrically connected to the source/drain electrode of the driving transistor through an electrode contact hole penetrating the first passivation layer and the first planarization layer.
- the first gate conductive layer may further include a second voltage line, and the second electrode may be electrically connected to the second voltage line.
- the first data conductive layer may further include a second voltage line, and the second electrode may be electrically connected to the second voltage line.
- the first data conductive layer further includes a conductive pattern contacting the second voltage wire through a first wire contact hole penetrating the interlayer insulating layer, and the second electrode includes the first protective layer and the first The conductive pattern may be in contact with the second wiring contact hole passing through the planarization layer.
- It may further include a thin film encapsulation structure disposed on the first contact electrode and the second contact electrode, and a color filter layer disposed on the thin film encapsulation structure.
- It may further include a color control layer disposed between the color filter layer and the thin film encapsulation structure.
- a reflective layer disposed on one surface of the external bank may be further included.
- the method may further include a buffer layer disposed between the first substrate and the semiconductor layer, and a light blocking layer disposed between the buffer layer and the first substrate and partially overlapping the first active layer.
- a display device includes a first substrate in which a light emitting region and a non-emission region are defined, disposed on the non-emission region of the first substrate, and a first active layer of a driving transistor a semiconductor layer that is disposed in the non-emission region and includes a first gate electrode disposed to overlap the first active layer, the first gate conductive layer being disposed in the non-emission region and the light emitting region to extend in a first direction a first voltage line arranged in the light emitting region, a first inner bank and a second inner bank extending in the first direction and spaced apart from each other in a second direction, at least a portion of the first inner bank is disposed on the first inner bank, , a first electrode including a portion extending in the first direction, at least a portion of which is disposed on the second inner bank, a second electrode including a portion extending in the first direction, and the first electrode and the A plurality of light emitting devices disposed between the second electrodes and electrically
- It may further include a scan line disposed in the non-emission area and extending in the second direction and a sensing line extending in the second direction and spaced apart from the scan line.
- a reference voltage line disposed in the non-emission area and the light emission area to extend in the first direction, and a reference voltage distribution line disposed in the non-emission area to extend in the second direction and electrically connected to the reference voltage line; may include
- the first electrode includes a first electrode stem extending in the second direction and a first electrode branch branching from the first electrode stem in the first direction, and the second electrode extends in the second direction. It may include an extended second electrode stem and a second electrode branch branched from the second electrode stem in the first direction.
- first contact electrode disposed on the first electrode branch and electrically connected to one end of the first electrode and the light emitting device and disposed on the second electrode branch and disposed on the second electrode and the light emitting device It may further include a second contact electrode electrically connected to the other end.
- the display device may further include an external bank disposed to cover the non-emission region and disposed to surround the emission region, wherein a height of the external bank may be greater than a height of the first internal bank and the second internal bank.
- the display device may include a plurality of light emitting devices disposed in a region formed by the inner bank, and may have an upper light emitting structure in which light emitted from the light emitting device is reflected from a side surface of the inner bank.
- the light emitting area in which the light emitting elements are disposed and the non-emission area in which the circuit devices are disposed may not overlap, and the display device may have a bottom light emitting structure.
- FIG. 1 is a schematic perspective view of a display device according to an exemplary embodiment
- FIG. 2 is a schematic cross-sectional view of the display device of FIG. 1 .
- FIG 3 is a plan view of a first display substrate according to an exemplary embodiment.
- FIG. 4 is a schematic diagram illustrating wirings included in a first display substrate according to an exemplary embodiment.
- 5 is an equivalent circuit diagram of one sub-pixel according to an exemplary embodiment.
- FIG. 6 is a schematic plan view illustrating one pixel of a display device according to an exemplary embodiment.
- FIG. 7 is a schematic plan view of a circuit element layer included in one sub-pixel of a display device according to an exemplary embodiment.
- FIG. 8 is a schematic plan view of a display element layer included in one pixel of a display device according to an exemplary embodiment.
- FIGS. 7 and 8 are cross-sectional views taken along lines Qa-Qa', Qb-Qb', and Qc-Qc' of FIGS. 7 and 8 .
- FIG. 10 is a cross-sectional view taken along line Q1-Q1' of FIGS. 7 and 8 .
- FIG. 11 is a schematic diagram of a light emitting device according to an embodiment.
- FIG. 12 is a schematic cross-sectional view of a display device according to an exemplary embodiment.
- FIG. 13 is a partial cross-sectional view of a first display substrate according to another exemplary embodiment.
- FIG. 14 is a schematic cross-sectional view illustrating one sub-pixel of a display device according to another exemplary embodiment.
- 15 is a cross-sectional view taken along lines Q2-Q2' and Q3-Q3' of FIG. 14 .
- 16 is a schematic plan view of a display element layer included in one sub-pixel of a display device according to another exemplary embodiment.
- 17 is a cross-sectional view taken along line Q4-Q4' of FIG. 16 .
- 18 to 20 are schematic plan views of a display element layer included in one sub-pixel of a display device according to another exemplary embodiment.
- 21 is a schematic plan view illustrating one sub-pixel of a display device according to another exemplary embodiment.
- FIG. 22 is a cross-sectional view taken along lines Q5-Q5' and Q6-Q6' of FIG. 21 .
- FIG. 23 is a schematic cross-sectional view of a display device according to another exemplary embodiment.
- FIG. 24 is a schematic cross-sectional view of a display device according to another exemplary embodiment.
- 25 is a schematic cross-sectional view of a portion in which an inactive area of a display device is positioned, according to an exemplary embodiment.
- 26 and 27 are schematic cross-sectional views of a portion in which an inactive area of a display device according to another exemplary embodiment is located.
- FIG. 1 is a schematic perspective view of a display device according to an exemplary embodiment
- FIG. 2 is a schematic cross-sectional view of the display device of FIG. 1 .
- the display device 1 includes a tablet PC, a smartphone, a car navigation unit, a camera, a center information display (CID) provided to a car, a wrist watch type electronic device, and a PDA ( Personal Digital Assistant), PMP (Portable Multimedia Player), small and medium electronic equipment such as game machines, televisions, external billboards, monitors, personal computers, can be applied to various electronic equipment such as medium and large electronic equipment such as notebook computers.
- PMP Personal Digital Assistant
- PMP Portable Multimedia Player
- small and medium electronic equipment such as game machines, televisions, external billboards, monitors, personal computers
- these are presented as exemplary embodiments, and it is obvious that they may be employed in other electronic devices without departing from the concept of the present invention.
- the display device 1 may have a rectangular shape in plan view.
- the display device 1 may include two first sides extending in one direction and two second sides extending in another direction crossing the one direction.
- An edge where the first side and the second side of the display device 1 meet may be a right angle, but is not limited thereto, and may form a curved surface.
- the first side may be shorter than the second side, but is not limited thereto.
- the flat shape of the display device 1 is not limited to the illustrated one, and a circular shape or other shape may be applied.
- the display device 1 may include a display area DPA displaying an image and a non-display area NDA not displaying an image.
- the non-display area NDA may be located around the display area DPA and surround the display area DPA.
- the display device 1 includes a first display substrate 10 and a second display substrate 50 facing the first display substrate 10 , the first display substrate 10 and the second display substrate 10 .
- a sealing part 70 coupling the display substrate 50 and a filler 90 filled between the first display substrate 10 and the second display substrate 50 may be further included.
- the first display substrate 10 includes devices and circuits for displaying an image, for example, a pixel circuit such as a switching device, a pixel defining layer defining a light emitting area and a non-emission area to be described later in the display area DPA, and a self-emission device. (self-light emitting element) may be included.
- a pixel circuit such as a switching device
- a pixel defining layer defining a light emitting area and a non-emission area to be described later in the display area DPA
- a self-emission device self-light emitting element
- the self-light emitting device is an organic light emitting device (Organic Light Emitting Diode), a quantum dot light emitting device (Quantum dot Light Emitting Diode), an inorganic material-based micro light-emitting diode (eg Micro LED), an inorganic material-based nano light-emitting diode (for example, it may include at least one of nano LEDs).
- Organic Light Emitting Diode Organic Light Emitting Diode
- Quantum dot Light Emitting Diode Quantum dot Light Emitting Diode
- an inorganic material-based micro light-emitting diode eg Micro LED
- an inorganic material-based nano light-emitting diode for example, it may include at least one of nano LEDs.
- the second display substrate 50 may be positioned on the first display substrate 10 and may face the first display substrate 10 .
- the second display substrate 50 may include a color conversion pattern for converting a color of incident light.
- the color conversion pattern may include at least one of a color filter and a color control layer. This will be described later.
- the sealing part 70 may be positioned between the first display substrate 10 and the second display substrate 50 in the non-display area NDA.
- the sealing part 70 may be disposed along edges of the first display substrate 10 and the second display substrate 50 in the non-display area NDA to surround the display area DPA in a plan view.
- the first display substrate 10 and the second display substrate 50 may be coupled to each other through the sealing part 70 .
- the sealing part 70 may be made of an organic material.
- the sealing part 70 may be made of an epoxy-based resin, but is not limited thereto.
- the filler 90 may be positioned in a space between the first display substrate 10 and the second display substrate 50 surrounded by the sealing part 70 .
- the filler 90 may fill a space between the first display substrate 10 and the second display substrate 50 .
- the filler 90 may be made of a material that can transmit light.
- the filler 90 may be made of an organic material.
- the filler 90 may be made of a silicone-based organic material, an epoxy-based organic material, or the like, but is not limited thereto. Also, in some cases, the filler 90 may be omitted.
- FIG 3 is a plan view of a first display substrate according to an exemplary embodiment.
- the first display substrate 10 may include an active area AA and a non-active area DS.
- the active area AA is an area in which a screen can be displayed
- the inactive area DS is an area in which a screen is not displayed.
- the active area AA may be referred to as an active area
- the non-active area DS may also be referred to as a non-active area.
- the active area AA may generally occupy the center of the first display substrate 10 .
- the first display substrate 10 may have a shape such as a long rectangle, a long rectangle, a square, a rectangle with rounded corners (vertices), other polygons, or a circle.
- the shape of the active area AA of the first display substrate 10 may also be similar to the overall shape of the first display substrate 10 .
- FIG. 3 the first display substrate 10 and the active area AA having a long rectangular shape are illustrated.
- the present invention is not limited thereto, and the shape of the first display substrate 10 may be variously modified.
- the active area AA of the first display substrate 10 may include a plurality of pixels PX.
- the plurality of pixels PX may be arranged in a matrix direction.
- the shape of each pixel PX may be a rectangular shape or a square shape in plan view, but is not limited thereto, and each side may have a rhombus shape inclined with respect to one direction.
- Each pixel PX may be alternately arranged in a stripe type or a pentile type.
- each of the pixels PX may include one or more light emitting devices 300 emitting light of a specific wavelength band to display a specific color.
- a non-active area DS may be disposed around the active area AA.
- the non-active area DS may completely or partially surround the active area AA.
- the active area AA may have a rectangular shape, and the non-active area DS may be disposed adjacent to four sides of the active area AA.
- the non-active area DS may constitute a bezel of the first display substrate 10 .
- Wires or circuit drivers included in the first display substrate 10 may be disposed in the non-active regions DS, or external devices may be mounted thereon.
- FIG. 4 is a schematic diagram illustrating wirings included in a first display substrate according to an exemplary embodiment.
- the first display substrate 10 may include a plurality of wires.
- the plurality of wirings may include a scan line SCL, a sensing line SSL, a data line DTL, a reference voltage line RVL, a first voltage line VDL, and a second voltage line VSL.
- other wirings may be further disposed on the first display substrate 10 .
- the scan line SCL and the sensing line SSL may extend in the first direction DR1 .
- the scan line SCL and the sensing line SSL may be connected to the scan driver SDR.
- the scan driver SDR may include a driving circuit.
- the scan driver SDR may be disposed on one side of the active area AA in the first direction DR1 , but is not limited thereto.
- the scan driver SDR may be connected to the signal connection line CWL, and at least one end of the signal connection line CWL may be connected to an external device by forming a pad WPD_CW on the non-active area DS.
- connection may mean that one member is connected to another member through mutual physical contact as well as connected through another member.
- one part and another part are interconnected due to the integrated member as one integral member.
- connection between one member and another member may be interpreted as including an electrical connection through another member in addition to a direct contact connection.
- the data line DTL and the reference voltage line RVL may extend in a second direction DR2 crossing the first direction DR1 .
- the reference voltage line RVL may further include a portion branched in the first direction DR1 from a portion extending in the second direction DR2 .
- the first voltage line VDL and the second voltage line VSL may also include a portion extending in the second direction DR2 and a portion connected thereto and extending in the second direction DR2 .
- the first voltage line VDL and the second voltage line VSL may have a mesh structure, but are not limited thereto.
- each pixel PX of the first display substrate 10 includes at least one data line DTL, a reference voltage line RVL, a first voltage line VDL, and a second voltage line. (VSL) can be connected.
- the data line DTL, the reference voltage line RVL, the first voltage line VDL, and the second voltage line VSL may be electrically connected to at least one wiring pad WPD.
- Each wiring pad WPD may be disposed in the non-active area DS.
- the wiring pad WPD_DT (hereinafter, referred to as a 'data pad') of the data line DTL is disposed on one side of the second direction DR2 of the active area AA in the pad area PDA
- the wiring pad WPD_VSS (hereinafter, 'second power pad') may be disposed in the pad area PDA located on the other side of the active area AA in the second direction DR2.
- the data pad WPD_DT, the reference voltage pad WPD_RV, the first power pad WPD_VDD, and the second power pad WPD_VSS are all the same area, for example, the non-active area DS located above the active area AA.
- An external device may be mounted on the wiring pad WPD.
- the external device may be mounted on the wiring pad WPD through an anisotropic conductive film, ultrasonic bonding, or the like.
- Each pixel PX of the first display substrate 10 includes a pixel driving circuit.
- the above-described wirings may apply a driving signal to each pixel driving circuit while passing through or around each pixel PX.
- the pixel driving circuit may include a transistor and a capacitor.
- the number of transistors and capacitors in each pixel driving circuit may be variously modified.
- the pixel driving circuit will be described using a 3T1C structure in which the pixel driving circuit includes three transistors and one capacitor as an example, but is not limited thereto and other various modified pixels PX such as 2T1C structure, 7T1C structure, 6T1C structure, etc. ) structure may be applied.
- 5 is an equivalent circuit diagram of one sub-pixel according to an exemplary embodiment.
- each pixel PX or sub-pixel PXn of the display device includes, in addition to the light emitting diode EL, three transistors DRT, SCT, and SST and one storage capacitor Cst. ) is included.
- the light emitting diode EL emits light according to a current supplied through the driving transistor DRT.
- the light emitting diode EL includes a first electrode, a second electrode, and a light emitting element ( '300' in FIG. 11 ) disposed between them.
- the light emitting device 300 may emit light in a specific wavelength band by an electrical signal transmitted from the first electrode and the second electrode. A detailed description thereof will be provided later.
- One end of the light emitting diode EL is connected to the first source/drain electrode of the driving transistor DRT, and the other end of the light emitting diode EL has a low potential lower than the high potential voltage (first power supply voltage, VDD) of the first voltage line VDL. It may be connected to the second voltage line VSL to which the potential voltage (the second power voltage, VSS) is supplied.
- the driving transistor DRT adjusts a current flowing from the first voltage line VDL to which the first power voltage VDD is supplied to the light emitting diode EL according to a voltage difference between the gate electrode and the source electrode.
- the gate electrode of the driving transistor DRT is connected to the first source/drain electrode of the scan transistor SCT, the first source/drain electrode is connected to the first electrode of the light emitting diode EL, and the second source/drain electrode is connected to the light emitting diode EL.
- the electrode may be connected to the first voltage line VDL to which the first power voltage VDD is applied.
- the scan transistor SCT is turned on by the scan signal of the scan line SCL to connect the data line DTL to the gate electrode of the driving transistor DRT.
- the gate electrode of the scan transistor SCT is connected to the scan line SCL
- the first source/drain electrode is connected to the gate electrode of the driving transistor DRT
- the second source/drain electrode is connected to the data line DTL.
- the sensing transistor SST is turned on by the sensing signal of the sensing line SSL to connect the reference voltage line RVL to the first source/drain electrode of the driving transistor DRT.
- the gate electrode of the sensing transistor SST is connected to the sensing line SSL, the first source/drain electrode is connected to the reference voltage line RVL, and the second source/drain electrode is connected to the first of the driving transistor DRT. It may be connected to a source/drain electrode.
- the first source/drain electrode of each of the transistors DRT, SCT, and SST may be a source electrode
- the second source/drain electrode may be a drain electrode, but is not limited thereto, and vice versa.
- the capacitor Cst is formed between the gate electrode of the driving transistor DRT and the first source/drain electrode.
- the storage capacitor Cst stores a difference voltage between the gate voltage of the driving transistor DRT and the first source/drain voltage.
- Each of the transistors DRT, SCT, and SST may be formed of a thin film transistor. Also, in FIG. 5 , each of the transistors DRT, SCT, and SST has been mainly described, but is not limited thereto. That is, each of the transistors DRT, SCT, and SST may be formed of a P-type MOSFET, some may be formed of an N-type MOSFET, and some may be formed of a P-type MOSFET.
- FIG. 6 is a schematic plan view illustrating one pixel of a display device according to an exemplary embodiment.
- 7 is a schematic plan view of a circuit element layer included in one sub-pixel of a display device according to an exemplary embodiment.
- 8 is a schematic plan view of a display element layer included in one pixel of a display device according to an exemplary embodiment.
- 9 is a cross-sectional view taken along lines Qa-Qa', Qb-Qb', and Qc-Qc' of FIGS. 7 and 8 .
- 10 is a cross-sectional view taken along line Q1-Q1' of FIGS. 7 and 8 .
- circuit elements and display elements disposed in each sub-pixel PXn are partially omitted (regions 'R', 'G', and 'B' in FIG. 6 ), and in FIG. 7 , one sub-pixel A circuit element layer of (eg, the third sub-pixel PX3 ) is illustrated in FIG. 8 , and a display element layer included in one pixel PX is illustrated. 9 and 10 illustrate partial cross-sections of the circuit element layer and the display element layer of the sub-pixel PXn.
- both sides of the first direction DR1 of FIGS. 6 to 8 may be referred to as left and right, respectively, and both sides of the second direction DR2 may be referred to as upper and lower sides, respectively.
- each of the pixels PX may include a first sub-pixel PX1 , a second sub-pixel PX2 , and a third sub-pixel PX3 .
- the first sub-pixel PX1 emits light of a first color
- the second sub-pixel PX2 emits light of a second color
- the third sub-pixel PX3 emits light of a third color.
- the first color may be red
- the second color may be green
- the third color may be blue.
- each of the sub-pixels PXn may emit light of the same color.
- the pixel PX includes three sub-pixels PXn in FIG. 6 , the present invention is not limited thereto, and the pixel PX may include a larger number of sub-pixels PXn.
- Each of the sub-pixels PXn of the first display substrate 10 may include an area defined as the emission area EMA.
- the first sub-pixel PX1 has a first emission area EMA1
- the second sub-pixel PX2 has a second emission area EMA2
- the third sub-pixel PX3 has a third emission area EMA2 .
- the light emitting area EMA may be defined as an area in which the light emitting device 300 included in the first display substrate 10 is disposed and light of a specific wavelength band is emitted. Lights generated in the light emitting layer 330 of the light emitting device 300 may be emitted to both end surfaces and side surfaces of the light emitting device 300 .
- the light emitting area EMA may include an area in which the light emitting device 300 is disposed, and an area adjacent to the light emitting device 300 , from which light emitted from the light emitting device 300 is emitted.
- the light emitting area EMA is not limited thereto, and the light emitting area EMA may also include an area in which light emitted from the light emitting device 300 is reflected or refracted by other members.
- the plurality of light emitting devices 300 may be disposed in each sub-pixel PXn, and may form a light emitting area EMA including an area in which they are disposed and an area adjacent thereto.
- each sub-pixel PXn of the first display substrate 10 may include a non-emission area defined as an area other than the emission area EMA.
- the non-emission region may be a region in which the light emitting device 300 is not disposed and the light emitted from the light emitting device 300 does not reach, and thus the light is not emitted.
- each pixel PX or sub-pixel PXn may include a circuit element layer and a display element layer.
- the display element layer includes the light emitting elements 300 and the first electrode 210 and the second electrode 220 are disposed, and the circuit element layer includes pixel circuit elements for driving the light emitting element 300 . It may be a layer in which a plurality of wirings are disposed.
- the circuit element layer may include a driving transistor DRT, a scan transistor SCT, a sensing transistor SST, and a storage capacitor Cst, including a scan line SCL, a sensing line SSL, and a data line DTL. ), a reference voltage line RVL, a first voltage line VDL, and a second voltage line VSL.
- the first display substrate 10 may include the first substrate 101 , and a circuit element layer and a display element layer may be disposed on the first substrate 101 .
- the first substrate 101 may be made of an insulating material such as glass, quartz, or polymer resin.
- the first substrate 101 may be a rigid substrate, but may also be a flexible substrate capable of bending, folding, rolling, and the like.
- the light blocking layer BML may be disposed on the first substrate 101 .
- the light blocking layer BML may be disposed to overlap a portion of the first active layer DRT_ACT of the driving transistor DRT, which will be described later.
- the light blocking layer BML may include a light-blocking material to prevent light from being incident on the first active layer DRT_ACT.
- the light blocking layer BML may be formed of an opaque metal material that blocks light transmission.
- the present invention is not limited thereto, and in some cases, the light blocking layer BML may be omitted or may be disposed in greater number to overlap the active layers of other transistors.
- the buffer layer 102 is disposed on the first substrate 101 including the light blocking layer BML.
- the buffer layer 102 may be entirely disposed on the first substrate 101 .
- the buffer layer 102 is formed on the first substrate 101 to protect the transistors of the pixel PX from moisture penetrating through the first substrate 101 that is vulnerable to moisture permeation, and may perform a surface planarization function.
- the buffer layer 102 may include a plurality of inorganic layers alternately stacked.
- the buffer layer 102 may be formed as a multi-layer in which one or more inorganic layers of a silicon oxide layer (SiOx), a silicon nitride layer (SiNx), and a silicon oxynitride (SiON) are alternately stacked.
- a semiconductor layer is disposed on the buffer layer 102 .
- the semiconductor layer may constitute an active layer of each transistor.
- the semiconductor layer may include a first active layer DRT_ACT of the driving transistor DRT, a second active layer SCT_ACT of the scan transistor SCT, and a third active layer SST_ACT of the sensing transistor SST.
- Each of the active layers may be disposed to partially overlap with gate electrodes of a first gate conductive layer, which will be described later.
- the first active layer DRT_ACT and the third active layer SST_ACT may be disposed on the lower side with respect to the center of each sub-pixel PXn
- the second active layer SCT_ACT may be disposed on the upper side of each sub-pixel PXn.
- the first active layer DRT_ACT and the third active layer SST_ACT may be integrally formed as one semiconductor layer, and the driving transistor DRT and the sensing transistor SST may also be electrically connected to each other.
- the semiconductor layer may further include a first semiconductor pattern SP1 .
- the first semiconductor pattern SP1 may be connected to a gate electrode and a sensing line SSL of a sensing transistor SST, which will be described later.
- the semiconductor layer may include polycrystalline silicon, single crystal silicon, an oxide semiconductor, or the like.
- each of the active layers may include a doped region and a channel region.
- the first active layer DRT_ACT may include a first doped region DRT_ACTa, a second doped region DRT_ACTb, and a first channel region DRT_ACTc.
- Each doped region may be a region doped with an impurity, and a channel region may be disposed between each doped region.
- Polycrystalline silicon may be formed by crystallizing amorphous silicon.
- the crystallization method examples include a rapid thermal annealing (RTA) method, a solid phase crystallization (SPC) method, an excimer laser annealing (ELA) method, a metal induced crystallization (MILC) method, and a sequential lateral solidification (SLS) method.
- RTA rapid thermal annealing
- SPC solid phase crystallization
- ELA excimer laser annealing
- MILC metal induced crystallization
- SLS sequential lateral solidification
- the semiconductor layer may include single crystal silicon, low temperature polycrystalline silicon, amorphous silicon, or the like.
- the semiconductor layer is not necessarily limited to the above-described bar.
- the semiconductor layer may include an oxide semiconductor.
- each doped region may be a conductive region.
- the oxide semiconductor when the semiconductor layer includes an oxide semiconductor, the oxide semiconductor may be an oxide semiconductor containing indium (In).
- the oxide semiconductor is indium-tin oxide (ITO), indium-zinc oxide (IZO), indium-gallium oxide (IGO), indium- Indium-Zinc-Tin Oxide (IZTO), Indium-Gallium-Tin Oxide (IGTO), Indium-Gallium-Zinc-Tin Oxide, IGZTO) and the like.
- ITO indium-tin oxide
- IZO indium-zinc oxide
- IGO indium-gallium oxide
- IZTO Indium-Indium-Zinc-Tin Oxide
- IGTO Indium-Gallium-Tin Oxide
- IGZTO Indium-Gallium-Zinc-Tin Oxide
- the first gate insulating layer 103 is disposed on the semiconductor layer and the buffer layer 102 .
- the first gate insulating layer 103 may function as a gate insulating layer of each transistor.
- the first gate insulating layer 103 may be formed of an inorganic layer including an inorganic material, for example, silicon oxide (SiOx), silicon nitride (SiNx), or silicon oxynitride (SiON), or may be formed in a stacked structure.
- the first gate conductive layer is disposed on the first gate insulating layer 103 .
- the first gate conductive layer includes first capacitances of the gate electrodes of each transistor, the scan line SCL, the sensing line SSL, the second voltage line VSL, the reference voltage distribution line RVT, and the storage capacitor Cst.
- An electrode CSE1 may be included.
- the gate electrodes of each transistor may be disposed to partially overlap the active layers, respectively.
- the first gate electrode DRT_G of the driving transistor DRT overlaps a portion of the first active layer DRT_ACT
- the second gate electrode SCT_G of the scan transistor SCT is the second active layer SCT_ACT.
- the third gate electrode SST_G of the sensing transistor SST may overlap a portion of the third active layer SST_ACT.
- the first gate electrode DRT_G may be connected to the first capacitor electrode CSE1 to form a single pattern.
- the second gate electrode SCT_G may be electrically connected to the scan line SCL
- the third gate electrode SST_G may be electrically connected to the sensing line SSL through the first semiconductor pattern SP1.
- the scan line SCL may extend in the first direction DR1 to extend beyond the boundary between the neighboring sub-pixels PXn.
- the scan line SCL may be disposed above the center of the sub-pixel PXn.
- the scan line SCL may be electrically connected to the second gate electrode SCT_G through a conductive pattern of a first data conductive layer, which will be described later, and may transmit a scan signal to the scan transistor SCT.
- the sensing line SSL may extend in the first direction DR1 and may be disposed beyond the boundary of the neighboring sub-pixels PXn.
- the sensing line SSL may be disposed below the center of the sub-pixel PXn in the second direction DR2 .
- the sensing line SSL may be electrically connected to the third gate electrode SST_G through the first semiconductor pattern SP1 , and may transmit a sensing signal to the sensing transistor SST.
- the reference voltage distribution line RVT may be disposed below the sensing line SSL and extend in the first direction DR1 .
- the reference voltage distribution line RVT extends from the first sub-pixel PX1 to the third sub-pixel PX3 , and each pixel PX, that is, the three sub-pixels PXn, has one reference voltage distribution line. (RVT) can be shared.
- the reference voltage distribution line RVT may be electrically connected to a reference voltage line RVL to be described later and a first source/drain electrode of a sensing transistor SST of each sub-pixel PXn.
- the reference voltage division line RVT may transfer the reference voltage applied from the reference voltage line RVL to the sensing transistor SST.
- the second voltage line VSL may extend in the second direction DR2 and may be disposed beyond the boundary of the sub-pixel PXn adjacent in the second direction DR2 .
- One second voltage line VSL may be disposed in one pixel PX, that is, every three sub-pixels PXn.
- the second voltage line VSL is disposed to extend in the second direction DR2 from the right side of the third sub-pixel PX3 , and is disposed in the first sub-pixel PX1 and the second sub-pixel PX2 . may not be placed.
- the second voltage line VSL may be electrically connected to the wiring pads WPD to be applied with the second power voltage VSS.
- the second voltage line VSL may be electrically connected to a second electrode 220 to be described later to apply a second power voltage VSS to the light emitting device 300 .
- the second voltage line VSL may further include a portion extending in the first direction DR1 .
- the second electrodes 220 of each sub-pixel PXn may be electrically connected to each other at a portion extending in the first direction DR1 of the second voltage line VSL.
- the second voltage line VSL is not necessarily disposed on the first gate conductive layer, but may be disposed on a first data conductive layer to be described later.
- the first capacitance electrode CSE1 of the storage capacitor Cst is disposed between the scan line SCL and the sensing line SSL.
- the first capacitance electrode CSE1 of the storage capacitor Cst may be electrically connected to the first gate electrode DRT_G and the first source/drain electrode SCT_SD1 of the scan transistor SCT. Also, as will be described later, the first capacitor electrode CSE1 may be positioned between the first voltage line VDL and the data line DTL on a plane.
- the first source/drain electrode SCT_SD1 of the scan transistor SCT may contact the second active layer SCT_ACT through the fifth contact hole CT5 in a region overlapping one side of the second active layer SCT_ACT. .
- the scan transistor SCT may be connected to the first capacitance electrode CSE1 of the storage capacitor Cst.
- the first source/drain electrode SCT_SD1 of the scan transistor SCT may be integrated with the first capacitance electrode CSE1 of the storage capacitor Cst.
- the first gate conductive layer may include any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu) or these It may be formed as a single layer or multiple layers made of an alloy of However, the present invention is not limited thereto.
- the first interlayer insulating layer 105 is disposed on the first gate conductive layer.
- the first interlayer insulating layer 105 may function as an insulating layer between the first gate conductive layer and other layers disposed thereon.
- the first interlayer insulating layer 105 may be formed of an inorganic layer including an inorganic material, for example, silicon oxide (SiOx), silicon nitride (SiNx), or silicon oxynitride (SiON), or may be formed in a stacked structure.
- more insulating layers and conductive layers may be disposed on the first gate conductive layer and the first interlayer insulating layer 105 . At least a portion of the conductive layer may be disposed to overlap the first gate conductive layer with the insulating layer interposed therebetween.
- the first data conductive layer is disposed on the first interlayer insulating layer 105 .
- the first data conductive layer includes a data line DTL, a first voltage line VDL, a reference voltage line RVL, source/drain electrodes of each transistor, a plurality of conductive patterns SDP1 and VCP, and a storage capacitor (SDP1, VCP). Cst) of the second capacitor electrode CSE2 may be included.
- the data line DTL may extend in the second direction DR2 to extend beyond the boundary between the neighboring sub-pixels PXn.
- the data line DTL may be disposed on the right side of the center of the sub-pixel PXn.
- the data line DTL may contact one side of the second active layer SCT_ACT through the fourth contact hole CT4 .
- a portion of the data line DTL may be the second source/drain electrode of the scan transistor SCT, and a data signal applied to the data line DTL may be transmitted to the scan transistor SCT.
- the first voltage line VDL may extend in the second direction DR2 to extend beyond the boundary between the neighboring sub-pixels PXn.
- the first voltage line VDL may be disposed on the left side with respect to the center of the sub-pixel PXn.
- the first voltage line VDL may contact one side of the first active layer DRT_ACT through the first contact hole CT1 . That is, a portion of the first voltage line VDL may be connected to the first source/drain electrode ('DRT_SD1' of FIG. 9 ) of the driving transistor DRT, and the first power applied to the first voltage line VDL.
- the voltage VDD may be transferred to the driving transistor DRT.
- the first voltage line VDL and the data line DTL may be disposed in each sub-pixel PXn.
- the first voltage line VDL and the data line DTL may be respectively disposed on the left and right sides with respect to the center of each sub-pixel PXn and may be disposed to extend in the second direction DR2 .
- the reference voltage line RVL may extend in the second direction DR2 and may be disposed beyond the boundary of the sub-pixel PXn adjacent in the second direction DR2 .
- One reference voltage line RVL may be disposed in one pixel PX, that is, every three sub-pixels PXn.
- the reference voltage line RVL may be disposed on the left side of the data line DTL of the third sub-pixel PX3 and may not be disposed on the first sub-pixel PX1 and the second sub-pixel PX2 .
- the reference voltage line RVL may be electrically connected to the aforementioned reference voltage distribution line RVT.
- the reference voltage line RVL may be electrically connected to the reference voltage distribution line RVT through the tenth contact hole CT10 .
- the reference voltage applied through the reference voltage line RVL may be transferred to the sensing transistor SST of each sub-pixel PXn through the reference voltage distribution line RVT.
- the second capacitance electrode CSE2 of the storage capacitor Cst is disposed between the first voltage line VDL and the data line DTL.
- the second capacitance electrode CSE2 of the storage capacitor Cst may be disposed to overlap the first capacitance electrode CSE1 , and a storage capacitor 'Cst' in FIG. 10 may be formed therebetween. That is, in an exemplary embodiment, the first capacitor electrode CSE1 and the second capacitor electrode CSE2 may be positioned between the first voltage line VDL and the data line DTL on a plane, respectively.
- the second capacitance electrode CSE2 of the storage capacitor Cst may be connected to the second source/drain electrode DRT_SD of the driving transistor DRT or 'DRT_SD2' of FIG. 9 .
- the second capacitance electrode CSE2 of the storage capacitor Cst may be integrated with the second source/drain electrode DRT_SD2 of the driving transistor DRT.
- the second source/drain electrode DRT_SD2 of the driving transistor DRT contacts a portion of the first active layer DRT_ACT through the second contact hole CT2 and the light blocking layer BML through the third contact hole CT3 You can come into contact with some.
- the second source/drain electrode DRT_SD2 of the driving transistor DRT may also contact one side of the third active layer SST_ACT through the eighth contact hole CT8, which is the sensing transistor SST.
- Source/drain electrodes may be configured.
- the first source/drain electrode SST_SD of the sensing transistor SST may be in contact with the other side of the third active layer SST_ACT and the reference voltage distribution line RVT.
- the first source/drain electrode SST_SD of the sensing transistor SST contacts the third active layer SST_ACT through the seventh contact hole CT7 and the reference voltage distribution line RVT through the tenth contact hole CT10 ) can be in contact with
- the first conductive pattern SDP1 and the second conductive pattern VCP of the first data conductive layer may be connected to a portion of the first gate conductive layer.
- the first conductive pattern SDP1 may be connected to the scan line SCL and the second gate electrode SCT_G, and a scan signal applied from the scan line SCL may be transmitted to the scan transistor SCT.
- the first conductive pattern SDP1 contacts the scan line SCL and the second gate electrode SCT_G of the scan transistor SCT through the sixth contact hole CT6 penetrating the first interlayer insulating layer 105 , respectively. can do.
- the second gate electrode SCT_G may be electrically connected to the scan line SCL through the first conductive pattern SDP1 , and the scan signal may be transmitted to the scan transistor SCT.
- the second conductive pattern VCP may be disposed to overlap the second voltage line VSL.
- the second conductive pattern VCP may contact the second voltage line VSL through the first wiring contact hole CTS1 penetrating the first interlayer insulating layer 105 .
- the second conductive pattern VCP may contact the second electrode 220 through a second wiring contact hole CTS2 to be described later.
- the second electrode 220 may be electrically connected to the second voltage line VSL through the second conductive pattern VCP.
- the first data conductive layer may include any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu) or these It may be formed as a single layer or multiple layers made of an alloy of However, the present invention is not limited thereto.
- the first passivation layer 107 is disposed on the first data conductive layer.
- the first passivation layer 107 may be disposed to cover the first data conductive layer to protect the first data conductive layer.
- the first protective layer 107 may be formed of an inorganic layer including an inorganic material, for example, silicon oxide (SiOx), silicon nitride (SiNx), or silicon oxynitride (SiON), or may be formed in a stacked structure.
- the first planarization layer 109 is disposed on the first passivation layer 107 .
- the first planarization layer 109 may include an organic insulating material, for example, an organic material such as polyimide (PI), and may perform a surface planarization function.
- PI polyimide
- the present invention is not limited thereto.
- a larger number of conductive layers may be disposed between the first planarization layer 109 and the first passivation layer 107 .
- first planarization layer 109 On the first planarization layer 109 , inner banks 410 and 420 , a plurality of electrodes 210 and 220 , an outer bank 450 , a plurality of contact electrodes 261 and 262 , and a light emitting device 300 are formed. A display element layer including a layer is disposed. In addition, a plurality of insulating layers IL1 , IL2 , and IL3 may be further disposed on the first planarization layer 109 .
- the inner banks 410 and 420 are disposed directly on the first planarization layer 109 .
- the internal banks 410 and 420 may include a first internal bank 410 and a second internal bank 420 disposed adjacent to the center of each pixel PX or sub-pixel PXn.
- the first inner bank 410 and the second inner bank 420 may be disposed to face each other and spaced apart from each other in the first direction DR1 . Also, the first internal bank 410 and the second internal bank 420 extend in the second direction DR2, but do not extend to the other sub-pixels PXn adjacent to each other in the second direction DR2. PXn) may be separated from each other at the boundary between them. The first internal bank 410 and the second internal bank 420 may be disposed in each sub-pixel PXn to form a pattern on the entire surface of the active area AA. The inner banks 410 and 420 may be disposed to face each other to be spaced apart from each other, thereby forming a region in which the light emitting device 300 is disposed.
- first internal banks 410 and one second internal bank 420 disposed therebetween are illustrated, but the present invention is not limited thereto. In some cases, a larger number of internal banks 410 and 420 may be further disposed according to the number of electrodes 210 and 220 .
- the first internal bank 410 and the second internal bank 420 may be positioned between the first voltage line VDL and the data line DTL on a plane.
- the external bank 450 is disposed at the boundary of each sub-pixel PXn, and the first voltage line VDL and the data line DTL are disposed at each sub-pixel PXn to partially external banks. (450) and may overlap in the thickness direction.
- the first internal bank 410 and the second internal bank 420 may be disposed to be spaced apart from the external bank 450 , respectively, and may be positioned between the first voltage line VDL and the data line DTL. .
- the first voltage line VDL extends in the second direction DR2 between the second internal bank 440 and the external bank 450 adjacent thereto on a plane, and in some cases, the first internal bank 410 and It can be overlapped in the thickness direction.
- the data line DTL extends in the second direction DR2 between the first inner bank 410 and the outer bank 450 adjacent thereto on a plan view, and in some cases overlaps the second inner bank 420 in the thickness direction.
- the 'thickness direction' may refer to a direction perpendicular to a cross-section or a direction in which a plurality of layers are overlapped.
- the members overlapping in the thickness direction may mean that at least a portion of the members overlap each other on a plane.
- the first voltage line VDL and the data line DTL may be respectively disposed to partially overlap the first internal bank 410 and the second internal bank 420 in plan view, but is not limited thereto.
- the first internal bank 410 may overlap the first voltage line VDL in the thickness direction
- the second internal bank 420 may overlap the data line DTL in the thickness direction.
- the data line DTL overlaps the portion extending in the second direction DR2 of the external bank 450 in the thickness direction
- the first voltage line VSL is connected to the second direction DR2 of the external bank 450 .
- the present invention is not limited thereto.
- the first inner bank 410 and the second inner bank 420 may have a predetermined width and have a structure in which at least a portion protrudes from the top surface of the first planarization layer 109 .
- the first inner bank 410 and the second inner bank 420 may each have the same width, protruding portions thereof may have inclined sides, and the light emitted from the light emitting device 300 may have the same width. (410, 420) may proceed towards the sloping side.
- the electrodes 210 and 220 disposed on the inner banks 410 and 420 may include a material having high reflectivity, and light emitted from the light emitting device 300 may be transmitted to the inner banks 410 and 420 .
- the internal banks 410 and 420 may provide a region in which the light emitting device 300 is disposed and at the same time perform the function of a reflective barrier rib that reflects the light emitted from the light emitting device 300 in an upward direction.
- the internal banks 410 and 420 may include an organic insulating material such as polyimide (PI), but is not limited thereto.
- the plurality of electrodes 210 and 220 are disposed on the inner banks 410 and 420 and the first planarization layer 109 .
- the plurality of electrodes 210 and 220 may include a first electrode 210 disposed on the first internal bank 410 and a second electrode 220 disposed on the second internal bank 420 .
- the first electrode 210 and the second electrode 220 are respectively extended in the first direction DR1 in the electrode stem portions 210S and 220S and the electrode stem portions 210S and 220S in the second direction DR2. It may include at least one electrode branch (210B, 220B) for branching.
- the first electrode 210 extends in the first direction DR1 and is branched from the first electrode stem 210S and the first electrode stem 210S to extend in the second direction DR2 .
- At least one first electrode branch 210B may be included. Both ends of the first electrode stem 210S of any one sub-pixel PXn are spaced apart from each other and end, but are adjacent to each other in the same row (eg, adjacent in the first direction DR1 ). may lie on substantially the same straight line as the first electrode stem 210S of the sub-pixel PXn. Both ends of the first electrode stem portions 210S disposed in each sub-pixel PXn are spaced apart from each other to independently transmit electrical signals to each of the first electrode branch portions 210B.
- the first electrode branch 210B is disposed to branch from at least a portion of the first electrode stem 210S and extend in the second direction DR2 .
- the first electrode branch 210B may terminate while being spaced apart from the second electrode stem 220S disposed to face the first electrode stem 210S.
- the first electrode 210 may be electrically connected to the driving transistor DRT.
- the first electrode 210 is formed in a portion overlapping with the first electrode stem portion 210S, and penetrates the first planarization layer 109 to penetrate the second source/drain electrodes (DRT) of the driving transistor DRT.
- the second source/drain electrode DRT_SD2 may be in contact with the electrode contact hole CTD exposing a portion of the top surface of the DRT_SD2 .
- the present invention is not limited thereto.
- a greater number of conductive layers may be disposed between the first planarization layer 109 and the first data conductive layer, and the first electrode 210 electrically connects the driving transistor DRT through the conductive layer. may be connected to
- the second electrode 220 includes a second electrode stem portion 220S disposed to extend in the first direction DR1 and at least one branched portion from the second electrode stem portion 220S extending in the second direction DR2 . It may include a second electrode branch 220B.
- the second electrode stem 220S is disposed to face the first electrode stem 210S and spaced apart from each other in the second direction DR2
- the second electrode branch 220B includes at least one first electrode branch 210B.
- the first direction DR1 may be disposed to face each other.
- the second electrode branch 220B may be disposed between the two first electrode branch 210B so that both sides thereof may face the first electrode branch 210B by being spaced apart from each other.
- the second electrode stem part 220S may extend in the first direction DR1 to cross each sub-pixel PXn.
- the second electrode branch 220B may be branched from the second electrode stem 220S in the second direction DR2 , but may terminate in a state spaced apart from the first electrode stem 210S.
- a plurality of light emitting devices 300 may be disposed between the second electrode branch 220B and the first electrode branch 210B.
- the second electrode 220 may be electrically connected to the second voltage line VSL.
- the second electrode 220 is formed between the third sub-pixel PX3 and the sub-pixel PXn adjacent in the first direction DR1 , passes through the first planarization layer 109 , and passes through the second electrode 220 .
- the second conductive pattern VCP may be in contact with the second wiring contact hole CTS2 exposing a portion of the upper surface of the conductive pattern VCP.
- the second electrode 220 may be electrically connected to the second voltage line VSL through the second conductive pattern VCP.
- the present invention is not limited thereto.
- the second conductive pattern VCP may be omitted and the second electrode 220 may directly contact the second voltage line VSL.
- first electrode branches 210B and one second electrode branch 220B are disposed in one sub-pixel PXn, so that the first electrode 210 is connected to the second electrode branch 220B. It is shown that it is arranged in a shape surrounding the outer surface of the. However, the present invention is not limited thereto.
- a larger number or a smaller number of electrode branches 210B and 220B may be disposed.
- the first electrode branch 210B and the second electrode branch 220B may be alternately disposed to be spaced apart from each other.
- the first electrode 210 and the second electrode 220 may not necessarily have a shape extending in one direction, and the first electrode 210 and the second electrode 220 may have various shapes.
- the first electrode 210 and the second electrode 220 may have a partially curved or bent shape, and one electrode may be disposed to surround the other electrode. At least some regions of the first electrode 210 and the second electrode 220 are spaced apart from each other to face each other, so if a region in which the light emitting device 300 is to be disposed is formed, the structure or shape in which they are disposed is not particularly limited. .
- the plurality of electrodes 210 and 220 may be electrically connected to the light emitting devices 300 , and a predetermined voltage may be applied so that the light emitting devices 300 emit light.
- the plurality of electrodes 210 and 220 are electrically connected to the light emitting device 300 through contact electrodes 261 and 262 to be described later, and transmit electrical signals applied to the electrodes 210 and 220 to the contact electrodes. It may be transmitted to the light emitting device 300 through 261 and 262 .
- the first electrode 210 may be a separate pixel electrode for each sub-pixel PXn, and the second electrode 220 may be a common electrode commonly connected along each sub-pixel PXn.
- One of the first electrode 210 and the second electrode 220 may be an anode electrode of the light emitting device 300 , and the other may be a cathode electrode of the light emitting device 300 .
- the present invention is not limited thereto and vice versa.
- each of the electrodes 210 and 220 may be used to form an electric field in the sub-pixel PXn to align the light emitting device 300 .
- the light emitting device 300 applies an alignment signal to the first electrode 210 and the second electrode 220 to form an electric field between the first electrode 210 and the second electrode 220 to form the first electrode It may be disposed between the 210 and the second electrode 220 .
- the light emitting device 300 is sprayed onto the first electrode 210 and the second electrode 220 in a state of being dispersed in ink through an inkjet printing process, and is disposed between the first electrode 210 and the second electrode 220 .
- an alignment signal to apply a dieletrophoretic force to the light emitting device 300 , the alignment may be performed therebetween.
- the first electrode 210 and the second electrode 220 are disposed on the first inner bank 410 and the second inner bank 420 , respectively, and they may face each other in the first direction DR1 while being spaced apart from each other.
- a plurality of light emitting devices 300 may be disposed between the first internal bank 410 and the second internal bank 420 , and at least one end thereof is electrically connected to the first electrode 210 and the second electrode 220 . can be connected to
- the first electrode 210 and the second electrode 220 disposed on the first inner bank 410 and the second inner bank 420 have a first electrode branch 210B and a second electrode branch 220B, respectively. ) may be part of
- the first electrode 210 and the second electrode 220 may be formed to have a greater width than the first inner bank 410 and the second inner bank 420 , respectively.
- the first electrode 210 and the second electrode 220 may be disposed to cover outer surfaces of the first inner bank 410 and the second inner bank 420 , respectively.
- a first electrode 210 and a second electrode 220 are respectively disposed on the side surfaces of the first inner bank 410 and the second inner bank 420 , and between the first electrode 210 and the second electrode 220 .
- the interval between may be narrower than the interval between the first internal bank 410 and the second internal bank 420 .
- at least a partial region of the first electrode 210 and the second electrode 220 may be directly disposed on the first planarization layer 109 .
- Each of the electrodes 210 and 220 may include a transparent conductive material.
- each of the electrodes 210 and 220 may include a material such as indium tin oxide (ITO), indium zinc oxide (IZO), or indium tin-zinc oxide (ITZO), but is not limited thereto.
- each of the electrodes 210 and 220 may include a highly reflective conductive material.
- each of the electrodes 210 and 220 is a material having high reflectivity and may include a metal such as silver (Ag), copper (Cu), or aluminum (Al).
- each of the electrodes 210 and 220 transmits light emitted from the light emitting device 300 and traveling to the side surfaces of the first internal bank 410 and the second internal bank 420 in the upper direction of each sub-pixel PXn. can be reflected by
- each of the electrodes 210 and 220 may have a structure in which a transparent conductive material and a metal layer having high reflectance are stacked in one or more layers, or may be formed as one layer including them.
- each of the electrodes 210 and 220 has a stacked structure of ITO/silver (Ag)/ITO/IZO, or an alloy including aluminum (Al), nickel (Ni), lanthanum (La), and the like. can be
- the first insulating layer IL1 is disposed on the first planarization layer 109 , the first electrode 210 , and the second electrode 220 .
- the first insulating layer IL1 is disposed on the opposite side of the region between the electrodes 210 and 220 or the inner banks 410 and 420 in addition to the spaced apart region between the inner banks 410 and 420 as the center.
- the first insulating layer IL1 is completely disposed on the first planarization layer 109 including the first electrode 210 and the second electrode 220 , and includes the first electrode 210 and the second electrode 220 . It may be disposed to expose a portion of the upper surface of the second electrode 220 .
- An opening (not shown) partially exposing the first electrode 210 and the second electrode 220 is formed in the first insulating layer IL1 , and one of the first electrode 210 and the second electrode 220 is formed. It may be arranged to cover only the side and the other side. A portion of the first electrode 210 and the second electrode 220 disposed on the internal banks 410 and 420 may be exposed by the opening.
- the first insulating layer IL1 may protect the first electrode 210 and the second electrode 220 and may insulate them from each other. Also, it is possible to prevent the light emitting device 300 disposed on the first insulating layer IL1 from being damaged by direct contact with other members.
- the shape and structure of the first insulating layer IL1 is not limited thereto.
- a step may be formed on a portion of the upper surface of the first insulating layer IL1 between the first electrode 210 and the second electrode 220 .
- the first insulating layer IL1 includes an inorganic insulating material, and the first insulating layer IL1 disposed to partially cover the first electrode 210 and the second electrode 220 is disposed thereunder. A portion of the upper surface may be stepped by the disposed electrodes 210 and 220 . Accordingly, the light emitting device 300 disposed on the first insulating layer IL1 between the first electrode 210 and the second electrode 220 may form an empty space between the upper surface of the first insulating layer IL1. can The empty space may be filled with a material constituting the second insulating layer IL2 to be described later.
- the first insulating layer IL1 may be formed such that a portion disposed between the first electrode 210 and the second electrode 220 has a flat top surface. The upper surface extends in one direction toward the first electrode 210 and the second electrode 220 , and the first insulating layer IL1 has each of the electrodes 210 and 220 in the first internal bank 410 and the second electrode 220 . It may also be disposed on a region overlapping the inclined side surface of the inner bank 420 .
- the contact electrodes 261 and 262 which will be described later, are in contact with the exposed regions of the first electrode 210 and the second electrode 220 , and the end of the light emitting device 300 on the flat top surface of the first insulating layer IL1 and can be contacted smoothly.
- the external bank 450 may be disposed on the first insulating layer IL1 .
- the external bank 450 may be disposed at a boundary between each sub-pixel PXn.
- the outer bank 450 is disposed to extend in the first direction DR1 and the second direction DR2 , and the light emitting device 300 is disposed between the inner banks 410 and 420 and the electrodes 210 and 220 . It may be disposed to surround a portion of the inner banks 410 and 420 and the electrodes 210 and 220 including the region.
- the external bank 450 may form a grid pattern on the entire surface of the active area AA of the first display substrate 10 .
- the external bank 450 may be disposed at a boundary between each sub-pixel PXn and partially overlap with wires disposed for each sub-pixel PXn or wires disposed for each pixel PX in the thickness direction. there is.
- the external bank 450 may overlap a data line DTL disposed for each sub-pixel PXn on a plane in a thickness direction, some of which may be a reference disposed for each pixel PX. It may overlap the voltage line RVL in the thickness direction.
- Portions of the external banks 450 extending in the second direction DR2 are disposed at the boundary of the sub-pixel PXn adjacent in the first direction DR1 , and partially overlap with the wirings extending in the second direction DR2 .
- the portion extending in the second direction DR2 of the external bank 450 and the thickness direction are the same. They may be arranged to overlap. However, the scan line SCL and the sensing line SSL may be disposed to overlap a portion extending in the first direction DR1 of the external bank 450 in the thickness direction.
- the height of the outer bank 450 may be greater than the height of the inner banks 410 and 420 .
- the external bank 450 separates the neighboring sub-pixels PXn and, at the same time, inkjet printing for disposing the light emitting device 300 during the manufacturing process of the first display substrate 10 .
- a function of preventing ink from overflowing into the adjacent sub-pixel PXn may be performed. That is, the external bank 450 may separate the inks in which the different light emitting devices 300 are dispersed in each of the different sub-pixels PXn so that they do not mix with each other.
- the external bank 450 may include polyimide (PI) like the internal banks 410 and 420 , but is not limited thereto.
- the light emitting device 300 may be disposed in a region formed between the first electrode 210 and the second electrode 220 or between the first internal bank 410 and the second internal bank 420 . One end of the light emitting device 300 may be electrically connected to the first electrode 210 , and the other end may be electrically connected to the second electrode 220 . The light emitting device 300 may be electrically connected to the first electrode 210 and the second electrode 220 through contact electrodes 261 and 262 , respectively.
- the plurality of light emitting devices 300 may be disposed to be spaced apart from each other and aligned substantially parallel to each other.
- the interval at which the light emitting devices 300 are spaced apart is not particularly limited.
- a plurality of light emitting devices 300 are arranged adjacent to each other to form a group, and a plurality of other light emitting devices 300 may be grouped in a state spaced apart by a predetermined interval, have non-uniform density and are oriented in one direction It can also be sorted.
- the light emitting device 300 has a shape extending in one direction, and the direction in which each of the electrodes 210 and 220 extends and the direction in which the light emitting device 300 extends are substantially perpendicular. there is.
- the present invention is not limited thereto, and the light emitting device 300 may be disposed at an angle instead of perpendicular to the direction in which the respective electrodes 210 and 220 extend.
- the light emitting device 300 may include the light emitting layers 330 including different materials to emit light of different wavelength bands to the outside.
- each of the sub-pixels PXn may include the light emitting devices 300 emitting light of different wavelength bands.
- the light emitting device 300 of the first sub-pixel PX1 includes a light emitting layer 330 emitting light of a first color having a first wavelength in a central wavelength band, and the light emitting device 300 of the second sub-pixel PX2 .
- ) includes a light emitting layer 330 emitting light of a second color having a center wavelength band of a second wavelength
- the light emitting device 300 of the third sub-pixel PX3 has a third wavelength band having a center wavelength band of the third wavelength.
- the light emitting layer 330 emitting colored light may be included.
- each of the first sub-pixel PX1 , the second sub-pixel PX2 , and the third sub-pixel PX3 may include the same type of light emitting device 300 to emit light of substantially the same color. there is.
- the light emitting device 300 may be disposed on the first insulating layer IL1 between the internal banks 410 and 420 or between the respective electrodes 210 and 220 .
- the light emitting device 300 may be disposed such that a partial region overlaps each of the electrodes 210 and 220 in the thickness direction.
- One end of the light emitting device 300 overlaps the first electrode 210 in the thickness direction and is placed on the first electrode 210 , and the other end overlaps the second electrode 220 and the second electrode in the thickness direction. 220 .
- each sub-pixel PXn may be in a region other than the region formed between the internal banks 410 and 420 , for example, an internal region. It may be disposed between the banks 410 and 420 and the external bank 450 .
- the light emitting device 300 is disposed between the first internal bank 410 and the second internal bank 420 , and between the first voltage line VDL and the data line DTL is a first capacitor electrode CSE1 . and a second capacitor electrode CSE2 may be disposed. According to an embodiment, at least a portion of the light emitting devices 300 may be disposed to overlap the first and second capacitor electrodes CSE1 and CSE2 of the circuit element layer in the thickness direction. As described above, the internal banks 410 and 420 and the first and second capacitor electrodes CSE1 and CSE2 may be positioned between the first voltage line VDL and the data line DTL on a plane. there is.
- At least some of the light emitting devices 300 disposed between the internal banks 410 and 420 may be disposed to overlap the first capacitor electrode CSE1 and the second capacitor electrode CSE2 of the circuit device layer. Lights emitted from both end surfaces of the light emitting device 300 are reflected by the electrodes 210 and 220 placed on the side surfaces of the inner banks 410 and 420 to be emitted toward the upper direction of the first substrate 101 . can
- a non-emission area in which circuit elements are disposed and a light-emitting area EMA in which the light-emitting devices 300 are disposed may be separated, and the light-emitting devices 300 are circuit devices. It can be non-overlapping with fields in the thickness direction.
- lights emitted from the light emitting devices 300 may be emitted in an upper direction or a rear direction of the first substrate 101 .
- a plurality of layers may be disposed in a direction parallel to the top surface of the first substrate 101 or the first planarization layer 109 .
- the light emitting device 300 may have a shape extending in one direction, and may have a structure in which a plurality of semiconductor layers are sequentially disposed in one direction.
- the light emitting device 300 is disposed so that one extended direction is parallel to the first planarization layer 109 , and the plurality of semiconductor layers included in the light emitting device 300 are disposed in a direction parallel to the top surface of the first planarization layer 109 .
- the present invention is not limited thereto.
- the plurality of layers may be disposed in a direction perpendicular to the first planarization layer 109 .
- the second insulating layer IL2 may be partially disposed on the light emitting device 300 disposed between the first electrode 210 and the second electrode 220 .
- the second insulating layer IL2 is disposed on the first insulating layer IL1 between the first electrode 210 and the second electrode 220 , and the light emitting device 300 includes the first insulating layer IL1 and the second insulating layer IL1 . It may be disposed between the two insulating layers IL2.
- the insulating layer ( '380' of FIG. 11 ) formed on the outer surface of the light emitting device 300 may be in direct contact with the first insulating layer IL1 and the second insulating layer IL2 .
- the second insulating layer IL2 may be disposed to partially surround the outer surface of the light emitting device 300 to protect the light emitting device 300 and to fix the light emitting device 300 during the manufacturing process.
- a portion of the second insulating layer IL2 disposed on the light emitting device 300 may have a shape extending in the second direction DR2 between the first electrode 210 and the second electrode 220 in plan view.
- the second insulating layer IL2 may form a stripe-type or island-type pattern in each sub-pixel PXn.
- the second insulating layer IL2 is disposed on the light emitting device 300 , and may expose one end and the other end of the light emitting device 300 .
- the exposed ends of the light emitting device 300 may contact contact electrodes 261 and 262 to be described later.
- the shape of the second insulating layer IL2 may be formed by a patterning process using a material constituting the second insulating layer IL2 using a conventional mask process.
- the mask for forming the second insulating layer IL2 has a width narrower than the length of the light emitting device 300 , and the material constituting the second insulating layer IL2 is patterned to expose both ends of the light emitting device 300 .
- the present invention is not limited thereto.
- a portion of the material of the second insulating layer IL2 may be disposed between the lower surface of the light emitting device 300 and the first insulating layer IL1 .
- the second insulating layer IL2 may be formed to fill a space between the first insulating layer IL1 and the light emitting device 300 formed during the manufacturing process. Accordingly, the second insulating layer IL2 may be formed to surround the outer surface of the light emitting device 300 .
- the present invention is not limited thereto.
- a plurality of contact electrodes 261 and 262 and a third insulating layer IL3 may be disposed on the second insulating layer IL2 .
- the plurality of contact electrodes 261 and 262 may have a shape extending in one direction.
- the plurality of contact electrodes 261 and 262 may be in contact with the light emitting device 300 and the electrodes 210 and 220 , respectively, and the light emitting devices 300 may be in contact with the first electrode 210 through the contact electrodes 261 and 262 , respectively. ) and an electrical signal may be transmitted from the second electrode 220 .
- the contact electrodes 261 and 262 may include a first contact electrode 261 and a second contact electrode 262 .
- the first contact electrode 261 and the second contact electrode 262 may be disposed on the first electrode 210 and the second electrode 220 , respectively.
- the first contact electrode 261 is disposed on the first electrode branch 210B
- the second contact electrode 262 is disposed on the second electrode branch 220B
- the first contact electrode 261 and the second contact electrode 262 may each extend in the second direction DR2 .
- the first contact electrode 261 and the second contact electrode 262 may be spaced apart from each other in the first direction DR1 , and they form a stripe-shaped pattern in the emission area EMA of each sub-pixel PXn. can do.
- the first contact electrode 261 and the second contact electrode 262 have widths measured in one direction in the one direction of the first electrode branch 210B and the second electrode branch 220B, respectively. may be equal to or greater than the measured width.
- the first contact electrode 261 and the second contact electrode 262 contact one end and the other end of the light emitting device 300 , respectively, and at the same time, the first electrode branch 210B and the second electrode branch 220B. ) can be arranged to cover both sides of the. As described above, the top surfaces of the first electrode 210 and the second electrode 220 are partially exposed, and the first contact electrode 261 and the second contact electrode 262 are the first electrode 210 and the second electrode 262 .
- the first contact electrode 261 is in contact with a portion of the first electrode 210 positioned on the first inner bank 410
- the second contact electrode 262 is the second inner bank ( 420) may be in contact with a portion located on the upper surface.
- the present invention is not limited thereto, and in some cases, the width of the first contact electrode 261 and the second contact electrode 262 is smaller than that of the first electrode 210 and the second electrode 220, so that the upper surface is exposed. It may be arranged to cover only a portion.
- at least a partial region of each of the first contact electrode 261 and the second contact electrode 262 is also disposed on the first insulating layer IL1 .
- the semiconductor layer is exposed on both end surfaces of the light emitting device 300 in the extended direction, and the first contact electrode 261 and the second contact electrode 262 are end surfaces on which the semiconductor layer is exposed. may be in contact with the light emitting device 300 .
- the present invention is not limited thereto. Both ends of the light emitting device 300 may be partially exposed.
- the insulating film ('380' in FIG. 11) surrounding the outer surface of the semiconductor layer of the light emitting device 300 may be partially removed, The exposed side of the semiconductor layer of the light emitting device 300 may contact the first contact electrode 261 and the second contact electrode 262 .
- One end of the light emitting device 300 is electrically connected to the first electrode 210 through the first contact electrode 261 , and the other end is electrically connected to the second electrode 220 through the second contact electrode 262 . can be connected to
- first and second contact electrodes 261 and 262 are disposed in one sub-pixel PXn
- present invention is not limited thereto.
- the number of first and second contact electrodes 261 and 262 may vary according to the number of first and second electrodes 210 and 220 disposed in each sub-pixel PXn.
- the first contact electrode 261 may be disposed on the first electrode 210 and the second insulating layer IL2 .
- the first contact electrode 261 may contact one end of the light emitting device 300 and an exposed upper surface of the first electrode 210 .
- One end of the light emitting device 300 may be electrically connected to the first electrode 210 through the first contact electrode 261 .
- the third insulating layer IL3 is disposed on the first contact electrode 261 .
- the third insulating layer IL3 may electrically insulate the first contact electrode 261 and the second contact electrode 262 from each other.
- the third insulating layer IL3 is disposed to cover the first contact electrode 261 , but is not disposed on the other end of the light emitting device 300 so that the light emitting device 300 can contact the second contact electrode 262 . may not be
- the third insulating layer IL3 may partially contact the first contact electrode 261 and the second insulating layer IL2 on the upper surface of the second insulating layer IL2 .
- a side of the third insulating layer IL3 in a direction in which the second electrode 220 is disposed may be aligned with one side of the second insulating layer IL2 .
- the third insulating layer IL3 may be disposed on the first insulating layer IL1 disposed on the first planarization layer 109 .
- the present invention is not limited thereto.
- the second contact electrode 262 is disposed on the second electrode 220 , the second insulating layer IL2 , and the third insulating layer IL3 .
- the second contact electrode 262 may contact the other end of the light emitting device 300 and the exposed upper surface of the second electrode 220 .
- the other end of the light emitting device 300 may be electrically connected to the second electrode 220 through the second contact electrode 262 .
- the first contact electrode 261 may be disposed between the first electrode 210 and the third insulating layer IL3 , and the second contact electrode 262 may be disposed on the third insulating layer IL3 .
- the second contact electrode 262 may partially contact the second insulating layer IL2 , the third insulating layer IL3 , the second electrode 220 , and the light emitting device 300 .
- One end of the second contact electrode 262 in the direction in which the first electrode 210 is disposed may be disposed on the third insulating layer IL3 .
- the first contact electrode 261 and the second contact electrode 262 may be in non-contact with each other by the second insulating layer IL2 and the third insulating layer IL3 .
- the present invention is not limited thereto, and in some cases, the third insulating layer IL3 may be omitted.
- the contact electrodes 261 and 262 may include a conductive material.
- it may include ITO, IZO, ITZO, aluminum (Al), and the like.
- the contact electrodes 261 and 262 may include a transparent conductive material, and light emitted from the light emitting device 300 may pass through the contact electrodes 261 and 262 to travel toward the electrodes 210 and 220 .
- Each of the electrodes 210 and 220 includes a material with high reflectivity, and the electrodes 210 and 220 placed on the inclined sides of the inner banks 410 and 420 direct the incident light to the upper direction of the first substrate 101 . can be reflected by However, the present invention is not limited thereto.
- first insulating layer IL1 , second insulating layer IL2 , and third insulating layer IL3 may include an inorganic insulating material or an organic insulating material.
- first insulating layer IL1 , the second insulating layer IL2 , and the third insulating layer IL3 are silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiOxNy), oxide It may include an inorganic insulating material such as aluminum (Al2O3), aluminum nitride (AlN), or the like.
- organic insulating materials such as acrylic resin, epoxy resin, phenol resin, polyamide resin, polyimide resin, unsaturated polyester resin, polyphenylene resin, polyphenylene sulfide resin, benzocyclobutene, cardo resin, siloxane resin , silsesquioxane resin, polymethyl methacrylate, polycarbonate, polymethyl methacrylate-polycarbonate synthetic resin, and the like.
- the present invention is not limited thereto.
- a thin film encapsulation structure (TFE: TFE1 , TFE2 , TFE3 ) may be disposed on the third insulating layer IL3 and the second contact electrode 262 .
- the thin film encapsulation structure TFE may include at least one thin film encapsulation layer.
- the thin film encapsulation layer may include a first inorganic layer TFE1 , an organic layer TFE2 , and a second inorganic layer TFE3 .
- Each of the first inorganic layer TFE1 and the second inorganic layer TFE3 may include silicon nitride, silicon oxide, or silicon oxynitride.
- Organic film is acrylic resin (polyacrylates resin), epoxy resin (epoxy resin), phenolic resin (phenolic resin), polyamides resin (polyamides resin), polyimide resin (polyimides rein), unsaturated polyester resin (unsaturated polyesters resin), polyphenylene-based resin (poly phenylenethers resin), polyphenylene sulfide-based resin (polyphenylenesulfides resin) or benzocyclobutene (benzocyclobutene, BCB) may include an organic insulating material.
- the light emitting device 300 may be a light emitting diode (Light Emitting diode), specifically, the light emitting device 300 has a size of a micro-meter (micro-meter) or nano-meter (nano-meter) unit, and is made of an inorganic material. It may be an inorganic light emitting diode made of.
- the inorganic light emitting diode may be aligned between the two electrodes in which polarity is formed when an electric field is formed in a specific direction between the two electrodes facing each other.
- the light emitting device 300 may be aligned between the electrodes by an electric field formed on the two electrodes.
- the light emitting device 300 may have a shape extending in one direction.
- the light emitting device 300 may have a shape such as a rod, a wire, or a tube.
- the light emitting device 300 may be cylindrical or rod-shaped.
- the shape of the light emitting device 300 is not limited thereto, and has a shape of a polygonal prism, such as a cube, a rectangular parallelepiped, or a hexagonal prism, or a light emitting device such as extending in one direction and having a partially inclined shape. 300) may have various forms.
- the plurality of semiconductors included in the light emitting device 300 may be sequentially disposed along the one direction or have a stacked structure.
- the light emitting device 300 may include a semiconductor layer doped with an arbitrary conductivity type (eg, p-type or n-type) impurity.
- the semiconductor layer may transmit an electrical signal applied from an external power source and emit it as light in a specific wavelength band.
- FIG. 11 is a schematic diagram of a light emitting device according to an embodiment.
- the light emitting device 300 may include a semiconductor core and an insulating layer 380 surrounding an outer surface of the semiconductor core.
- the semiconductor core may include at least a first semiconductor layer 310 , a second semiconductor layer 320 , and an emission layer 330 .
- the semiconductor core of the light emitting device 300 may further include an electrode layer 370 .
- an embodiment in which the light emitting device 300 includes a first semiconductor layer 310 , a second semiconductor layer 320 , a light emitting layer 330 , an electrode layer 370 , and an insulating film 380 will be described. .
- the first semiconductor layer 310 may be an n-type semiconductor.
- the first semiconductor layer 310 when the light emitting device 300 emits light in a blue wavelength band, the first semiconductor layer 310 is AlxGayIn1-x-yN (0 ⁇ x ⁇ 1, 0 ⁇ y ⁇ 1, 0 ⁇ x+y ⁇ It may include a semiconductor material having the chemical formula of 1).
- it may be any one or more of AlGaInN, GaN, AlGaN, InGaN, AlN, and InN doped with n-type.
- the first semiconductor layer 310 may be doped with an n-type dopant, for example, the n-type dopant may be Si, Ge, Sn, or the like.
- the first semiconductor layer 310 may be n-GaN doped with n-type Si.
- the length of the first semiconductor layer 310 may be in a range of 1.5 ⁇ m to 5 ⁇ m, but is not limited thereto.
- the second semiconductor layer 320 is disposed on the light emitting layer 330 to be described later.
- the second semiconductor layer 320 may be a p-type semiconductor.
- the second semiconductor layer 320 may be AlxGayIn1-x-yN (0 ⁇ and a semiconductor material having a formula of x ⁇ 1,0 ⁇ y ⁇ 1, 0 ⁇ x+y ⁇ 1).
- it may be any one or more of AlGaInN, GaN, AlGaN, InGaN, AlN, and InN doped with p-type.
- the second semiconductor layer 320 may be doped with a p-type dopant, and for example, the p-type dopant may be Mg, Zn, Ca, Se, Ba, or the like. In an exemplary embodiment, the second semiconductor layer 320 may be p-GaN doped with p-type Mg. The length of the second semiconductor layer 320 may be in the range of 0.05 ⁇ m to 0.10 ⁇ m, but is not limited thereto.
- the drawing shows that the first semiconductor layer 310 and the second semiconductor layer 320 are configured as one layer, the present invention is not limited thereto. According to some embodiments, depending on the material of the light emitting layer 330, the first semiconductor layer 310 and the second semiconductor layer 320 have a larger number of layers, for example, a clad layer or a TSBR (Tensile strain barrier reducing). It may further include a layer. This will be described later with reference to other drawings.
- the light emitting layer 330 is disposed between the first semiconductor layer 310 and the second semiconductor layer 320 .
- the light emitting layer 330 may include a material having a single or multiple quantum well structure.
- the emission layer 330 may have a structure in which a plurality of quantum layers and a well layer are alternately stacked.
- the light emitting layer 330 may emit light by combining electron-hole pairs according to an electric signal applied through the first semiconductor layer 310 and the second semiconductor layer 320 .
- the emission layer 330 when the emission layer 330 emits light in a blue wavelength band, it may include a material such as AlGaN or AlGaInN.
- the quantum layer may include a material such as AlGaN or AlGaInN
- the well layer may include a material such as GaN or AlInN.
- the light emitting layer 330 includes AlGaInN as a quantum layer and AlInN as a well layer. As described above, the light emitting layer 330 has a central wavelength band of 450 nm to 495 nm. can emit.
- the present invention is not limited thereto, and the light emitting layer 330 may have a structure in which a type of semiconductor material having a large band gap energy and a semiconductor material having a small band gap energy are alternately stacked with each other, and the wavelength band of the emitted light It may include other group 3 to group 5 semiconductor materials according to the present invention.
- the light emitted from the emission layer 330 is not limited to the light of the blue wavelength band, and in some cases, light of the red and green wavelength bands may be emitted.
- the length of the emission layer 330 may be in a range of 0.05 ⁇ m to 0.10 ⁇ m, but is not limited thereto.
- light emitted from the light emitting layer 330 may be emitted not only from the longitudinal outer surface of the light emitting device 300 , but also from both sides.
- the direction of the light emitted from the light emitting layer 330 is not limited in one direction.
- the electrode layer 370 may be an ohmic contact electrode. However, the present invention is not limited thereto, and may be a Schottky contact electrode.
- the light emitting device 300 may include at least one electrode layer 370 . 11 illustrates that the light emitting device 300 includes one electrode layer 370, but is not limited thereto. In some cases, the light emitting device 300 may include a larger number of electrode layers 370 or may be omitted. The description of the light emitting device 300 may be applied in the same manner even if the number of electrode layers 370 is changed or other structures are further included.
- the electrode layer 370 may reduce resistance between the light emitting device 300 and the electrode or contact electrode when the light emitting device 300 is electrically connected to the electrodes 210 and 220 or the contact electrodes 261 and 262 .
- the electrode layer 370 may include a conductive metal.
- the electrode layer 370 may include aluminum (Al), titanium (Ti), indium (In), gold (Au), silver (Ag), indium tin oxide (ITO), indium zinc oxide (IZO), and ITZO ( Indium Tin-Zinc Oxide) may include at least one.
- the electrode layer 370 may include a semiconductor material doped with n-type or p-type.
- the electrode layer 370 may include the same material or different materials, but is not limited thereto.
- the insulating layer 380 is disposed to surround the outer surfaces of the semiconductor core, for example, the plurality of semiconductor layers and the electrode layers described above.
- the insulating layer 380 may be disposed to surround at least the outer surface of the light emitting layer 330 , and may extend in one direction in which the light emitting device 300 extends.
- the insulating layer 380 may function to protect the members.
- the insulating layer 380 may be formed to surround side surfaces of the members, and both ends of the light emitting device 300 in the longitudinal direction may be exposed.
- the insulating layer 380 extends in the longitudinal direction of the light emitting device 300 and is formed to cover from the first semiconductor layer 310 to the side surface of the electrode layer 370 , but is not limited thereto.
- the insulating layer 380 may cover only the outer surface of a portion of the semiconductor layer including the emission layer 330 , or cover only a portion of the outer surface of the electrode layer 370 so that the outer surface of each electrode layer 370 is partially exposed.
- the insulating layer 380 may be formed to have a rounded upper surface in cross-section in a region adjacent to at least one end of the light emitting device 300 .
- the thickness of the insulating layer 380 may have a range of 10 nm to 1.0 ⁇ m, but is not limited thereto. Preferably, the thickness of the insulating layer 380 may be about 40 nm.
- the insulating layer 380 is made of materials having insulating properties, for example, silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiOxNy), aluminum nitride (AlN), It may include aluminum oxide (Al2O3) and the like. Accordingly, an electrical short that may occur when the light emitting layer 330 directly contacts an electrode through which an electrical signal is transmitted to the light emitting device 300 can be prevented. In addition, since the insulating layer 380 protects the outer surface of the light emitting device 300 including the light emitting layer 330 , it is possible to prevent a decrease in luminous efficiency.
- the outer surface of the insulating layer 380 may be surface-treated.
- the light emitting device 300 may be sprayed onto the electrode in a state of being dispersed in ink to be aligned.
- the surface of the insulating layer 380 may be hydrophobic or hydrophilic.
- the light emitting device 300 may have a length h of 1 ⁇ m to 10 ⁇ m or 2 ⁇ m to 6 ⁇ m, preferably 3 ⁇ m to 5 ⁇ m.
- the diameter of the light emitting device 300 may be in the range of 300 nm to 700 nm, and the aspect ratio of the light emitting device 300 may be 1.2 to 100.
- the present invention is not limited thereto, and the plurality of light emitting devices 300 may have different diameters depending on a composition difference of the light emitting layer 330 .
- the diameter of the light emitting device 300 may have a range of about 500 nm.
- the light emitting devices 300 included in the first display substrate 10 may be electrically connected to the first electrode 210 and the second electrode 220 to emit light in a specific wavelength band. Lights emitted from the first display substrate 10 may travel upward of the first substrate 101 to be incident on the second display substrate 50 .
- the second display substrate 50 will be described with further reference to other drawings.
- FIG. 12 is a schematic cross-sectional view of a display device according to an exemplary embodiment.
- the second display substrate 50 may be disposed on the thin film encapsulation structure TFE to face it.
- the second substrate 501 of the second display substrate 50 may include a transparent material.
- the second substrate 501 may include a transparent insulating material such as glass or quartz.
- the second substrate 501 may be a rigid substrate.
- the second substrate 501 is not limited thereto, and the second substrate 501 may include plastic such as polyimide, and may be bent, bent, or folded. , it may have a flexible characteristic that can be rolled.
- the second substrate 501 may use the same substrate as the first substrate 101 , but may have different materials, thicknesses, transmittance, and the like. For example, the second substrate 501 may have a higher transmittance than the first substrate 101 . The second substrate 501 may be thicker or thinner than the first substrate 101 .
- the upper light absorbing member UAB may be disposed on one surface of the second substrate 501 facing the first substrate 101 along the boundary of the sub-pixel PXn.
- the upper light absorbing member UAB may overlap the external bank 450 of the first display substrate 10 and may be positioned in the light blocking area BA.
- the upper light absorbing member UAB may include an opening exposing one surface of the second substrate 501 overlapping the emission area ('EMA' of FIG. 8 ) of the first display substrate 10 .
- the upper light absorbing member UAB not only blocks light emission from the display device, but also suppresses external light reflection.
- the upper light absorbing member UAB may be formed in a planar lattice shape.
- the upper light absorbing member UAB may include an organic material.
- the upper light absorbing member UAB may include a light absorbing material that absorbs a visible light wavelength band.
- the upper light absorbing member UAB may be formed of a material used as a black matrix of the display device.
- the upper light absorbing member UAB may be a type of light blocking member.
- the upper light absorbing member UAB may define a light blocking area BA and a light exit area TA.
- the area in which the upper light absorbing member UAB is disposed becomes the light blocking area BA, and the second substrate 501 not covered by the upper light absorbing member UAB or exposed by the upper light absorbing member UAB is the light emitting area.
- TA can be
- the light exit area TA of the second display substrate 50 may be formed to correspond to each pixel PX or sub-pixel PXn of the first display substrate 10 .
- the second display substrate 50 is arranged to correspond to the first light exit area TA1 and the second sub-pixel PX2 arranged to correspond to the first sub-pixel PX1 of the first display substrate 10 .
- It may include a second light exit area TA2 and a third light exit area TA3 disposed to correspond to the third sub-pixel PX3 .
- Each of the light exit areas TA1 , TA2 , and TA3 may be repeatedly disposed in a matrix form, and the light blocking area BA in which the upper light absorbing member UAB is disposed may be disposed between them.
- the upper light absorbing member UAB may absorb light of a specific wavelength band among visible light wavelengths and transmit light of another specific wavelength band.
- the upper light absorbing member UAB may include the same material as the one color filter layer CFL.
- the upper light absorbing member UAB may be made of the same material as the blue third color filter layer (refer to 'CFL_3').
- the upper light absorbing member UAB may be formed integrally with the third color filter layer CFL_3 .
- the upper light absorbing member UAB may be omitted.
- a color filter layer CFL may be disposed on one surface of the second substrate 501 on which the upper light absorbing member UAB is disposed.
- the color filter layer CFL may serve to block light of a color other than the corresponding color of each sub-pixel PXn from being emitted.
- the color filter layer CFL may be disposed on one surface of the second substrate 501 exposed through the opening of the upper light absorbing member UAB. Furthermore, the color filter layer CFL may be partially disposed on the adjacent upper light absorbing member UAB.
- the color filter layer CFL is disposed on the first color filter layer CFL_1 disposed in the first sub-pixel PX1 , the second color filter layer CFL_2 disposed in the second sub-pixel PX2 and the third sub-pixel PX3 .
- a third color filter layer CFL_3 may be disposed.
- Each color filter layer CFL may include a colorant such as a dye or a pigment that absorbs a wavelength other than the corresponding color wavelength.
- the first color filter layer CFL_1 may be a red color filter layer
- the second color filter layer CFL_2 may be a green color filter layer
- the third color filter layer CFL_3 may be a blue color filter layer.
- a first capping layer CPL1 may be disposed on the color filter layer CFL.
- the first capping layer CPL1 may prevent impurities such as moisture or air from penetrating from the outside to damage or contaminate the color filter layer CFL. Also, the first capping layer CPL1 may prevent the colorant of the color filter layer CFL from being diffused into other components.
- the first capping layer CPL1 may directly contact one surface (top surface in FIG. 12 ) of the color filter layer CFL.
- the first capping layer CPL1 may be formed of an inorganic material.
- the first capping layer CPL1 may include silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, and silicon oxynitride.
- a lower light absorbing member BAB may be disposed on the thin film encapsulation structure TFE of the first display substrate 10 .
- the lower light absorbing member BAB may be disposed to overlap the outer bank 450 .
- the lower light absorbing member BAB may serve to block light emitted from the light emitting device 300 from being mixed into the light exit area TA of the neighboring sub-pixel PXn.
- the display device 1 may further include a lower light absorbing member BAB to further block color mixing for each sub-pixel PXn.
- the lower light absorbing member BAB may include an organic material.
- the lower light absorbing member BAB may include a light absorbing material that absorbs a visible light wavelength band.
- the lower light absorbing member BAB may be formed of a material used as a black matrix of the display device.
- the lower light absorbing member BAB may be a type of light blocking member.
- the lower light absorbing member BAB may overlap the upper light absorbing member UAB in a thickness direction.
- the width of the lower light absorbing member BAB may be less than or greater than the width of the outer bank 450 .
- a filler 90 may be disposed between the first display substrate 10 and the second display substrate 50 .
- the filler 90 may fill the space between the first display substrate 10 and the second display substrate 50 and serve to couple them together.
- the filler 90 may be disposed between the thin film encapsulation structure TFE of the first display substrate 10 and the first capping layer CPL1 of the second display substrate 50 .
- the filler 90 may be made of a Si-based organic material, an epoxy-based organic material, or the like, but is not limited thereto.
- FIG. 13 is a partial cross-sectional view of a first display substrate according to another exemplary embodiment.
- the first display substrate 10_1 of the display device 1 may further include a reflective layer LRL formed on one surface of the external bank 450 .
- the embodiment of FIG. 13 is different from the embodiment of FIG. 10 in that it further includes a reflective layer (LRL).
- the light emitting device 300 is disposed between the inner banks 410 and 420 , and the light emitted from the light emitting device 300 is applied to the electrodes 210 and 220 placed on the inclined sides of the inner banks 410 and 420 .
- the present invention is not limited thereto, and at least some of the lights emitted from the light emitting device 300 may be emitted upwardly of the first substrate 101 without being reflected by the electrodes 210 and 220 . Also, some of them may proceed toward the external bank 450 positioned at the boundary between the neighboring sub-pixels PXn.
- a reflective layer LRL may be further disposed on at least one surface of the external bank 450 , and at least some of the light emitted from the light emitting device 300 may pass through the reflective layer LRL to the second display substrate. (50) can be reflected.
- the reflective layer LRL may include a material having high reflectivity. Although it is illustrated in the drawing that the reflective layer LRL is formed on only a portion of one surface of the external bank 450 facing the region where the light emitting device 300 is disposed, the present invention is not limited thereto. The area or width of the region where the reflective layer LRL is formed on one surface of the external bank 450 may be variously changed according to the arrangement and number of the light emitting devices 300 . Other descriptions are the same as described above.
- FIG. 14 is a schematic cross-sectional view illustrating one sub-pixel of a display device according to another exemplary embodiment.
- 15 is a cross-sectional view taken along lines Q2-Q2' and Q3-Q3' of FIG. 14 .
- FIG. 14 omits the semiconductor layer and the contact electrodes 261 and 262 for convenience of description.
- the first display substrate 10_2 of the display device 1 further includes a portion in which the second voltage line VSL_2 extends in the first direction DR1, , as for the second electrode 220_2 , the second electrode stem portion 220S may be omitted.
- the second voltage line VSL_2 further includes a portion extending in the first direction DR1
- the second electrodes 220_2 of each sub-pixel PXn are respectively applied with the second voltage It is different from other embodiments in that it can be electrically connected to the wiring VSL_2 .
- the second voltage line VSL_2 may further include a portion extending in the first direction DR1 in addition to the portion extending in the second direction DR2 as in the embodiment of FIG. 7 . . Similar to the external bank 450 , the second voltage line VSL_2 may form a lattice or mesh pattern on the first substrate 101 .
- the second voltage line VSL_2 may be disposed in each sub-pixel PXn, and the second electrodes 220_2 of each sub-pixel PXn may be electrically connected to the second voltage line VSL_2, respectively.
- the second electrode stem 220S may be omitted.
- the second electrode 220_2 may have a shape extending in the second direction DR2 and may be disposed between the first electrode branch portions 210B.
- the second conductive pattern VCP_2 is disposed for each sub-pixel PXn and may contact the second electrode 220_2 and the second voltage line VSL_2 , respectively.
- the second conductive pattern VCP_2 passes through the first interlayer insulating layer 105 and penetrates the second voltage line VSL_2 and the second voltage line VSL_2 through the first wiring contact hole CTS1_2 exposing a portion of the top surface of the second voltage line VSL_2 .
- the second electrode 220_2 penetrates through the first planarization layer 109 and the first passivation layer 107 to expose a portion of the upper surface of the second conductive pattern VCP_2 through a second wiring contact hole CTS2_2. It may be in contact with the conductive pattern VCP_2 .
- the second electrode 220_2 may be electrically connected to the second voltage line VSL_2 through the second conductive pattern VCP_2 disposed in each sub-pixel PXn, and the second voltage line ( As VSL_2 is disposed for each sub-pixel PXn, a voltage drop of the second power voltage VSS is prevented.
- 16 is a schematic plan view of a display element layer included in one sub-pixel of a display device according to another exemplary embodiment. 17 is a cross-sectional view taken along line Q4-Q4' of FIG. 16 .
- the circuit element layer is omitted and only a plan view of the display element layer is shown for convenience of explanation.
- a shielding electrode ( LSP_3) may be further included.
- 16 and 17 are different from the embodiment of FIG. 8 in that the first display substrate 10_3 further includes a shielding electrode LSP_3.
- the light emitting device 300 may be disposed between the first electrode 210_3 and the second electrode 220_3 or between the first internal bank 410 and the second internal bank 420 .
- the light emitting device 300 may be disposed between and electrically connected to the first electrode branch 210B_3 and the second electrode branch 220B_3 .
- an alignment signal may be applied to the first electrode 210_3 and the second electrode 220_3 to generate an electric field thereon.
- the light emitting devices 300 placed in the electric field may be disposed between the first electrode 210_3 and the second electrode 220_3 while the orientation direction and position are changed.
- At least one end of the light emitting device 300 is not electrically connected to each of the electrodes 210_3 and 220_3 , for example, between the first electrode branch 210B_3 and the external bank 450 , or each electrode. It may be preferable that the light emitting devices 300 are not disposed on the stem portions 210S_3 and 220S_3 .
- the display device 1 may further include a shielding electrode LSP_3 disposed to cover at least a portion of the first electrode 210_3 and the second electrode 220_3 of the first display substrate 10_3 .
- the shielding electrode LSP_3 may prevent an electric field from being generated in a partial region when an alignment signal is applied to the first electrode 210_3 and the second electrode 220_3 .
- the shielding electrode LSP_3 may include a shielding material that prevents generation of an electric field.
- the shielding electrode LSP_3 may include a carbon pigment, Cr/CrOx, CrOx, MoOx, or the like.
- the present invention is not limited thereto.
- the shielding electrode LSP_3 may be disposed to cover at least one side of the first electrode branch 210B_3 .
- the shielding electrode LSP_3 is the other side opposite to one side opposite to the second electrode branch 220B_3 of the first electrode branch 210B_3, and the external bank 450 of the first electrode branch 210B_3. It may be arranged to cover a portion facing the.
- the shielding electrode LSP_3 may overlap the second inner bank 420 and the second inner bank 420 of the first inner bank 410 in the thickness direction.
- a first insulating layer IL1 may be disposed between the shielding electrode LSP_3 and the first electrode 210_3 , and they may be insulated from each other.
- the shielding electrode LSP_3 may have a shape extending in the second direction DR2 along the first electrode branch 210B_3 , and an electric field is generated between the first electrode branch 210B_3 and the external bank 450 . can be prevented from becoming
- the shielding electrode LSP_3 may be disposed at a portion where each of the electrode branch portions 210B_3 and 220_B is connected to the electrode stem portions 210S_3 and 220S_3 .
- the shielding electrode LSP_3 further includes a portion extending in the first direction DR1, a portion where the first electrode branch portion 210B_3 and the first electrode stem portion 210S_3 are connected, and a second electrode branch portion ( 220B_3 and the second electrode stem 220S_3 may also be disposed on a connection portion.
- the shielding electrode LSP_3 is a space between the first internal bank 410 and the second internal bank 420 , and may be disposed to substantially surround a region in which the light emitting devices 300 are disposed.
- the turn electrode LSP_3 may be disposed to cover an outer part of the first electrode branch 210B_3 and the first internal bank 410 based on the region where the light emitting devices 300 are disposed.
- the shielding electrode LSP_3 may block generation of an electric field except for the region between the first internal bank 410 and the second internal bank 420 , and the light emitting device 300 . may be intensively disposed in a region between the internal banks 410 and 420 .
- 18 to 20 are schematic plan views of a display element layer included in one sub-pixel of a display device according to another exemplary embodiment. 18 to 20 further illustrate only the first voltage line VDL and the data line DTL in addition to the display element layer for convenience of explanation.
- the first display substrate 10_4 of the display device 1 may further include a larger number of internal banks and electrodes for each sub-pixel PXn.
- An electrode further disposed in each sub-pixel PXn may be a repair electrode 230_4 disposed in preparation for a defect in the first electrode 210_4 or the second electrode 220_4 .
- the embodiment of FIGS. 18 to 20 is different from the embodiment of FIG. 7 in that each sub-pixel PXn further includes a repair electrode 230_4 .
- Each sub-pixel PXn may further include a third internal bank 430_4 disposed between the first internal bank 410 and the external bank 450 .
- the third internal bank 430_4 may have substantially the same shape as the second internal bank 420 , except for a position in which it is disposed. That is, the third internal bank 430_4 may have a shape extending in the second direction DR2 and may face the first internal bank 410 by being spaced apart.
- the repair electrode 230_4 may be disposed on the third internal bank 430_4 .
- the repair electrode 230_4 may have substantially the same shape as each of the electrode branch portions 210B_4 and 220B_4 .
- the repair electrode 230_4 may have a shape extending in the second direction DR2 and may be disposed on the third internal bank 430_4 .
- the repair electrode 230_4 may face the first electrode branch portion 210B_4 by being spaced apart from each other, and the light emitting device 300 may be further disposed therebetween.
- a third contact electrode 263_4 may be further disposed on the repair electrode 230_4 .
- the third contact electrode 263_4 may have substantially the same shape as the first contact electrode 261_4 . A detailed description of the arrangement and shape thereof will be omitted.
- the first electrode 210_4 may have a shape in which the first electrode stem 210S_4 is further extended.
- the first electrode stem 210S_4 may protrude from a portion connected to any one of the first electrode branch 210B_4 in the first direction DR1 to face the repair electrode 230_4 .
- Each sub-pixel PXn may have a larger area as the third internal bank 430_4 and the repair electrode 230_4 are further disposed. That is, the region surrounded by the external bank 450 may have a greater width in the first direction DR1 .
- the circuit element layer may be disposed in the same manner as in FIG. 7 .
- the third internal bank 430_4 and the repair electrode 230_4 may be disposed between the data line DTL and the external bank 450 on a plane.
- the data line DTL is non-overlapping between the second internal bank 420 and the third internal bank 430_4 or between the first internal bank 410 and the third internal bank 430_4 in the second direction ( DR2) can be extended.
- the data line DTL may overlap the light emitting devices 300 electrically connected to the repair electrode 230_4 in a thickness direction.
- the present invention is not limited thereto.
- the light emitting device 300 is disposed between the first internal bank 410 and the second internal bank 420 and the first light emitting device 300A electrically connected to the first electrode 210_4 and the second electrode 220_4 ) and a second light emitting device 300B disposed between the first internal bank 410 and the third internal bank 430_4 and having at least one end electrically connected to the repair electrode 230_4 .
- the first light emitting device 300A may be the same as the above-described light emitting device 300 .
- the second light emitting device 300B is electrically connected to the repair electrode 230_4 , whether to emit light may be determined according to the connection of the repair electrode 230_4 .
- the repair electrode 230_4 is not electrically connected to the first electrode 210_4 or the second electrode 220_4 . It may include a first type sub-pixel PXA.
- the repair electrode 230_4 may be disposed to be spaced apart from the first electrode stem 210S_4 and the second electrode stem 220S_4, and they may be formed in a disconnected state without being connected to each other (‘CB1’ in FIG. 18 ). ').
- the repair electrode 230_4 may be formed in a state of being electrically connected to the first electrode stem 210S_4 or the second electrode stem 220S_4 , and then disconnected from each other during the manufacturing process to be spaced apart from each other.
- the repair electrode 230_4 may be disconnected from each of the electrode stem portions 210S_4 and 220S_4, and may be electrically connected It may be left as a floating electrode that does not work.
- the second light emitting device 300B electrically connected to the repair electrode 230_4 may be disposed in the sub-pixel PXn in a state in which light is not emitted because an electric signal is not transmitted.
- the present invention is not limited thereto.
- the repair electrode 230_4 may also be disposed in a state of being electrically connected to the first electrode 210_4 or the second electrode 220_4. there is.
- the repair electrode 230_4 may be connected to replace the electrode.
- one of the first electrode branch portions 210B_4 is disconnected so that the repair electrode 230_4 is electrically connected to the first electrode 210_4.
- the second-type sub-pixel PXB and the third-type sub-pixel PXC in which the second electrode branch 220B_4 is disconnected so that the repair electrode 230_4 is electrically connected to the second electrode 220_4 may include.
- the first electrode branch 210B_4 between the second electrode branch 220B_4 and the repair electrode 230_4 may be disconnected from the first electrode stem 210S_4 ( FIG. 19 ). 'CB2').
- the repair electrode 230_4 may be electrically connected to the first electrode stem 210S_4 , and the second light emitting devices 300B also receive electrical signals through the repair electrode 230_4 and the third contact electrode 263_4 .
- the second electrode branch 220B_4 may be disconnected from the second electrode stem 220S_4 ('CB3' in FIG. 20 ), and the repair electrode 230_4 is the second electrode row. It may be electrically connected to the base 220S_4. In the third type sub-pixel PXC, the second electrode branch 220B_4 may remain as a floating electrode.
- the first display substrate 10 of the display device 1 may be disposed so that the display device layer on which the light emitting devices 300 are disposed and the circuit device layer do not overlap in the thickness direction.
- the first display substrate 10 is a region separated on the first substrate 101 , in which a light emitting area and a non-emission area are defined, and the light emitting devices 300 are disposed in the light emitting area, but the circuit elements are It may be disposed in the non-emissive area.
- 21 is a schematic plan view illustrating one sub-pixel of a display device according to another exemplary embodiment. 22 is a cross-sectional view taken along lines Q5-Q5' and Q6-Q6' of FIG. 21 .
- a portion Q5-Q5' of FIG. 21 is a cross-section of a portion of the non-emission area NEA of each sub-pixel PXn, and a portion Q6-Q6' is a portion of the emission area EMA of each sub-pixel PXn. is a section of
- each pixel PX or sub-pixel PXn of the first display substrate 10_5 has a display device layer and a circuit device layer each having a thickness of each other. direction may not overlap.
- Each of the sub-pixels PXn includes a light emitting area EMA in which the light emitting device 300 is disposed, and a non-emission area NEA in which circuit devices such as a driving transistor DRT are disposed, which are the first substrate 101 . ) may be respectively disposed in areas separated from each other.
- the light emitting devices 300 may not be disposed on the circuit devices of each sub-pixel PXn, and light may be emitted to the top or rear surface of the area based on the area in which the light emitting devices 300 are disposed. there is.
- overlapping descriptions will be omitted, and differences will be mainly described.
- Each of the sub-pixels PXn of the first display substrate 10 may include an emission area EMA and a non-emission area NEA.
- the light emitting area EMA includes the light emitting device 300 , and the first electrode 210 and the second electrode 220 are disposed, and the non-emission area NEA located at one side of the light emitting area EMA is driven. Circuit elements including a transistor DRT may be disposed. 21 illustrates that the light-emitting area EMA and the non-emission area NEA are arranged in the second direction DR2, but is not limited thereto.
- the first display substrate 10 of the display device 1_5 has the light emitting area EMA and the non-emission area EMA if the light emitting device 300 and the circuit devices disposed in each sub-pixel PXn do not overlap each other in the thickness direction.
- the arrangement of NEA) is not particularly limited.
- a semiconductor layer including active layers of each transistor, a first gate conductive layer, and first data conductive layers may be disposed in the non-emission area NEA.
- the first voltage line VDL, the data line DTL, the reference voltage line RVL, and the second voltage line VSL are Since it is disposed to extend in two directions DR2 , it may be disposed over the non-emission area NEA and the light emission area EMA.
- the internal banks 410 and 420 , the electrodes 210 and 220 , the light emitting devices 300 , and the contact electrodes 261 and 262 in addition to the wires extending in the second direction DR2 . ) can be placed. These may be disposed so as to not overlap the circuit element layer in the thickness direction. That is, the plurality of light emitting devices 300 may not overlap the first capacitor electrode CSE1 and the second capacitor electrode CSE2 .
- the arrangement of the internal banks 410 and 420 , the electrodes 210 and 220 , the light emitting devices 300 , and the contact electrodes 261 and 262 is substantially the same as described above with reference to FIG. 8 .
- the first display substrate 10_5 may further include a second interlayer insulating layer 108 and a second data conductive layer disposed between the first planarization layer 109 and the first data conductive layer.
- the second interlayer insulating layer 108 may be disposed on the first data conductive layer and the first interlayer insulating layer 105
- the second data conductive layer may be disposed on the second interlayer insulating layer 108 .
- a description thereof is substantially the same as described above with respect to the first interlayer insulating layer 105 .
- the second data conductive layer may include a third conductive pattern VDP disposed at a boundary between the light emitting area EMA and the non-emission area NEA.
- the third conductive pattern VDP penetrates the second interlayer insulating layer 108 and passes through the contact hole VDC exposing a portion of the source/drain electrode DRT_SD of the driving transistor DRT to the source of the driving transistor DRT. It may be in contact with the /drain electrode DRT_SD.
- the contact hole VDC may be formed in the non-emission area NEA.
- the first electrode 210 is formed in a region where the first electrode stem 210S and the third conductive pattern VDP overlap, and penetrates the first planarization layer 109 to partially penetrate the upper surface of the third conductive pattern VDP. may be in contact with the third conductive pattern VDP through the electrode contact hole CTD_5 exposing the .
- the first electrode 210 may be electrically connected to the driving transistor DRT through the third conductive pattern VDP.
- the external bank 450 may be disposed to surround the light emitting area EMA in which the light emitting devices 300 are disposed, and the non-emission area NEA may be entirely covered. According to an embodiment, the external bank 450 may be disposed to cover the non-emission area NEA and may be disposed to expose the light emitting area EMA in which the light emitting devices 300 are disposed. That is, the external bank 450 may be completely disposed on the first substrate 101 , and may have a structure in which an opening is formed to expose a portion of the emission area EMA. Other than that, the description of the arrangement of the respective wirings and conductive layers, the electrode, the light emitting device, etc. is the same as that described above, and the detailed description thereof will be omitted.
- the display device 1 may include a light emitting area EMA and a non-emission area NEA, which are areas in which the first display substrate 10_5 is separated from each other.
- EMA light emitting area
- NEA non-emission area
- the first display substrate 10_5 may emit light emitted from the light emitting device 300 in a rear direction in addition to an upper direction of the first substrate 101 , and may have a bottom light emitting structure.
- the second display substrate 50 may include more members. More color control structures may be disposed between the second substrate 501 of the second display substrate 50 and the thin film encapsulation structure TFE of the first display substrate 10 .
- FIG. 23 is a schematic cross-sectional view of a display device according to another exemplary embodiment.
- the second display substrate 50_6 may further include color control layers WCL and TPL and a color mixing preventing member MBM.
- the display device 1_6 of FIG. 23 is different from the embodiment of FIG. 12 in that the second display substrate 50_6 further includes the color control layers WCL and TPL and a color mixing preventing member.
- overlapping descriptions will be omitted and descriptions will be made focusing on differences.
- Color control layers WCL and TPL may be disposed on the first capping layer CPL1 of the second display substrate 50_6 .
- the color control layer may include a wavelength conversion layer (WCL) that converts the wavelength of the incident light and/or a light transmission layer (TPL) that maintains and passes the wavelength of the incident light.
- WCL wavelength conversion layer
- TPL light transmission layer
- the wavelength conversion layer WCL or the light transmission layer TPL may be disposed to be separated for each sub-pixel PXn.
- the wavelength conversion layer WCL or the light transmitting layer TPL may overlap the light emitting area EMA and the light emitting area TA in a thickness direction.
- the adjacent wavelength conversion layer WCL or the transmission layer may be spaced apart from each other.
- the separation space may substantially overlap the light blocking area BA.
- the separation space forms a valley portion having a grid shape in a plan view.
- the wavelength conversion layer WCL may be disposed on the sub-pixel PXn that needs to be converted because the wavelength of the light incident from the light-emitting device 300 is different from the color of the corresponding sub-pixel PXn.
- the light-transmitting layer TPL may be disposed on the sub-pixel PXn in which the wavelength of the light incident from the light-emitting device 300 is the same as the color of the corresponding sub-pixel PXn.
- the light emitting device 300 of each sub-pixel PXn emits light of a third color, and a wavelength conversion layer is formed on the first sub-pixel PX1 and the second sub-pixel PX2 .
- WCL may be disposed, and a light-transmitting layer TPL may be disposed on the third sub-pixel PX3 .
- the present invention is not limited thereto, and when the light emitting device 300 of each sub-pixel PXn emits light having a wavelength different from the color of each light emitting area TA, such as ultraviolet rays, the wavelength conversion layer WCL without the light transmitting layer TPL. ) can be placed.
- the light emitting device 300 of each sub-pixel PXn emits light corresponding to the color of each light emitting area TA, only the light transmitting layer TPL may be disposed without the wavelength conversion layer WCL. .
- the wavelength conversion layer WCL includes a first wavelength conversion pattern WCL1 disposed on the first sub-pixel PX1 and a second wavelength conversion pattern WCL2 disposed on the second sub-pixel PX2 . may include.
- the first wavelength conversion pattern WCL1 may include a first base resin BRS1 and a first wavelength conversion material WCP1 disposed in the first base resin BRS1 .
- the second wavelength conversion pattern WCL2 may include a second base resin BRS2 and a second wavelength conversion material WCP2 disposed in the second base resin BRS2 .
- the light transmitting layer TPL may include a third base resin BRS3 and a scatterer SLP disposed therein.
- the first to third base resins BRS1 , BRS2 , and BRS3 may include a light-transmitting organic material.
- the first to third base resins BRS1 , BRS2 , and BRS3 may include an epoxy-based resin, an acrylic-based resin, a cardo-based resin, or an imide-based resin.
- the first to third base resins BRS1, BRS2, and BRS3 may all be made of the same material, but are not limited thereto.
- the scatterers SLP may be metal oxide particles or organic particles.
- the metal oxide include titanium oxide (TiO2), zirconium oxide (ZrO2), aluminum oxide (Al2O3), indium oxide (In2O3), zinc oxide (ZnO), or tin oxide (SnO2), and the organic particles.
- an acrylic resin or a urethane-based resin may be used as the material.
- the first wavelength conversion material WCP1 may convert blue light into red light
- the second wavelength conversion material WCP2 may convert blue light into green light
- the first wavelength conversion material WCP1 and the second wavelength conversion material WCP2 may be quantum dots, quantum rods, phosphors, or the like.
- the quantum dots may include group IV nanocrystals, group II-VI compound nanocrystals, group III-V compound nanocrystals, group IV-VI nanocrystals, or a combination thereof.
- the first wavelength conversion pattern WCL1 and the second wavelength conversion pattern WCL2 may further include a scatterer SLP that increases wavelength conversion efficiency.
- the light transmitting layer TPL disposed on the third sub-pixel PX3 transmits blue light incident from the light emitting device 300 while maintaining its wavelength.
- the scattering material SLP of the light transmitting layer TPL scatters light and may serve to adjust an emission angle of light emitted through the light transmitting layer TPL.
- the light transmitting layer TPL may not include a wavelength conversion material.
- a second capping layer CPL2 is disposed on the wavelength conversion layer WCL and the light transmission layer TPL.
- the second capping layer CPL2 may be formed of an inorganic material.
- the second capping layer CPL2 may include a material selected from those listed as materials of the first capping layer CPL1 .
- the second capping layer CPL2 and the first capping layer CPL1 may be made of the same material, but are not limited thereto.
- the second capping layer CPL2 may cover each of the wavelength conversion patterns WCL1 and WCL2 and the light transmitting layer TPL.
- the second capping layer CPL2 may cover not only one surface but also a side surface of each of the wavelength conversion patterns WCL1 and WCL2 and the light transmitting layer TPL.
- the second capping layer CPL2 may contact the first capping layer CPL1 in a space spaced apart between the adjacent color control layers WCL and TPL.
- the second capping layer CPL2 may have a shape conforming to a surface step formed by the color control layers WCL and TPL. The valley portion of the space between the color control layers WCL and TPL may not be completely filled by the second capping layer CPL2 and may have a predetermined depth.
- a color mixing prevention member MBM is disposed on the second capping layer CPL2 .
- the color mixing prevention member MBM is made of a material capable of blocking light transmission, and serves to prevent light from penetrating into the adjacent sub-pixels PXn to prevent color mixing.
- the color mixing prevention member MBM may be disposed along the boundary of the sub-pixel PXn.
- the color mixing preventing member MBM may be disposed along a space between the color control layers WCL and TPL.
- the color mixing preventing member MBM may fill a valley portion disposed in a space between the color control layers WCL and TPL.
- One surface of the color mixing preventing member MBM is not limited thereto, but may protrude in a thickness direction than one surface of the color control layers WCL and TPL.
- the height (or thickness) of the color mixing preventing member MBM protruding from the surrounding wavelength conversion patterns WCL1 and WCL2 or the light transmitting layer TPL is 1 ⁇ m to 3 ⁇ m, 1.4 ⁇ m to 1.8 ⁇ m, or about 1.6 ⁇ m. can, but is not limited thereto.
- the color mixing prevention member MBM may include an organic material.
- the color mixing prevention member MBM may include a light absorbing material that absorbs a visible light wavelength band.
- the color mixing prevention member MBM may include an organic light blocking material.
- the color mixing preventing member MBM is a kind of light blocking member, and may be made of the same material as the above-described upper light absorbing member UAB, but is not limited thereto.
- FIG. 24 is a schematic cross-sectional view of a display device according to another exemplary embodiment.
- the color control layers WCL and TPL and the color mixing prevention member MBM of the second display substrate 50_7 are disposed on the first display substrate 10 .
- the second display substrate 50_7 may be formed by omitting the second substrate 501 and being substantially integrated with the first display substrate 10 .
- a first capping layer CPL1 may be disposed on the lower light absorbing member BAB of the first display substrate 10 .
- the color control layers WCL and TPL may be disposed on the first capping layer CPL1 to correspond to each sub-pixel PXn, and the second capping layer CPL2 may be disposed on the color control layers WCL and TPL.
- a color mixing preventing member MBM is disposed on the second capping layer CPL2 and in the valley between the adjacent color control layers WCL and TPL.
- a color filter layer CFL and an upper light absorbing member UAB are disposed on the second capping layer CPL2 and the color mixing preventing member MBM for each sub-pixel PXn, and the color filter layer CFL and the upper light absorbing member UAB are disposed on the second capping layer CPL2 and the color mixing preventing member MBM.
- a third capping layer CPL3 may be disposed thereon.
- the light exit area TA and the light blocking area BA may be defined by the color mixing prevention member MBM and/or the color control layers WCL and TPL. Also, since members of the second display substrate 50_7 may be directly formed on the first display substrate 10 , the sealing part 70 for coupling the first display substrate 10 and the second display substrate 50_7 to each other. ) and the filler 90 may be omitted. Hereinafter, overlapping descriptions will be omitted.
- 25 is a schematic cross-sectional view of a portion in which an inactive area of a display device is positioned, according to an exemplary embodiment.
- a metal wire PDE, a transistor GTR of a scan driver SDR, a dam structure DAM, and a plurality of patterns PBP and MSP are formed.
- the metal wiring PDE, the transistor GTR of the scan driver SDR, and the dam structure DAM may be sequentially disposed from the active area AA toward the outermost portion of the display device 1 .
- the present invention is not limited thereto.
- the metal wiring PDE may be disposed on the first interlayer insulating layer 105 , and may be disposed in the non-active area DS of the first display substrate 10 . That is, the metal interconnection PDE may be disposed on the same layer as the first data conductive layer of the active area AA. Although not specifically illustrated in the drawings, a plurality of metal wirings PDEs may be disposed in the non-active area DS, and these may be electrically connected to the wirings disposed in the active area AA.
- the metal line PDE may include a plurality of lines disposed in the active area AA, for example, a first voltage line VDL, a second voltage line VSL, a data line DTL, and a reference voltage line ( RVL) and the like may be electrically connected.
- the metal wiring PDE may extend from the non-active area DS along the active area AA to be connected to the pads WPD disposed in the pad area PDA, and the wirings disposed in the active area AA may be It may be electrically connected to the pad WPD through the metal wire PDE.
- An electric signal may be applied to the wiring through a metal wiring PDE.
- a wiring protection layer PEI may be further disposed on the metal wiring PDE in addition to the first protection layer 107 .
- the wiring protection layer PEI may include an insulating material to protect the metal wiring PDE.
- the insulating pattern PBP may be disposed to be spaced apart from the metal wiring PDE.
- the insulating pattern PBP may be substantially the same as the first planarization layer 109 . That is, the insulating pattern PBP may include the same material as the first planarization layer 109 and have the same thickness.
- a transistor GTR of the scan driver SDR may be disposed in the non-active region DS of the first display substrate 10 . Although it is illustrated that only one transistor GTR is disposed in the drawing, the present invention is not limited thereto, and at least one transistor GTR may be disposed according to a driving circuit of the scan driver SDR. Similar to the driving transistor DRT, the transistor GTR of the scan driver SDR includes an active layer ('GTR_ACT' in FIG. 25), a gate electrode ('GTR_G' in FIG. 25), and a source/drain electrode ('GTR_SD1' in FIG. 25). ', 'GTR_SD2'). Descriptions thereof are the same as those described above with the example of the driving transistor DRT.
- a light blocking layer BML may be disposed under the active layer GTR_ACT of the transistor GTR of the scan driver SDR, and the transistor GTR of the scan driver SDR may have a first source/drain electrode GTR_SD1 It may be connected to the light blocking layer BML.
- the present invention is not limited thereto.
- the dam structure DAM may be disposed at an outer portion of the scan driver SDR.
- a plurality of dam structures DAM may be disposed in the non-active area DS, and the number is not particularly limited.
- the dam structure DAM may be disposed to surround the active area AA of the first display substrate 10 . That is, the dam structure DAM may be disposed to extend in the first direction DR1 and the second direction DR2 .
- the dam structure DAM may include a plurality of layers.
- the dam structure DAM may include a dam base layer DAM_BP and a dam upper layer DAM_UP disposed on the dam base layer DAM_BP.
- the dam base layer DAM_BP and the dam upper layer DAM_UP may be formed simultaneously with the layers disposed in the active area AA, respectively.
- the dam base layer DAM_BP may be formed in the same process as the first planarization layer 109
- the thickness of the dam base layer DAM_BP may be the same as the thickness of the first planarization layer 109 .
- the dam upper layer DAM_UP may be formed in the same process as the external bank 450 .
- the first insulating layer IL1 may be disposed between the external bank 450 and the first planarization layer 109 , and the dam upper layer DAM_UP may be disposed directly on the dam base layer DAM_BP.
- the dam upper layer DAM_UP and the outer bank 450 may have different thicknesses or heights, but are not limited thereto.
- a dummy pattern MSP may be further disposed between the sealing part 70 and the dam structure DAM.
- the dummy pattern MSP may be disposed at an outermost portion of the non-active area DS of the first display substrate 10 .
- the dummy pattern MSP may support masks used in a process of forming members disposed on the first display substrate 10 . That is, for example, the dummy pattern MSP may function as a mask supporter during a manufacturing process of the first display substrate 10 .
- 26 and 27 are schematic cross-sectional views of a portion in which an inactive area of a display device according to another exemplary embodiment is located.
- the display device 1 may further include a capping electrode layer CPE disposed on the first data conductive layer.
- the capping electrode layer CPE may be disposed on the lines included in the first data conductive layer, for example, the metal line PDE and the source/drain electrodes GTR_SD1 and GTR_SD2 of the scan driver SDR transistor GTR. there is.
- the first data conductive layer disposed in the active area AA the first voltage line VDL, the data line DTL, the reference voltage line RVL, and source/drain of each transistor
- a capping electrode layer (CPE) may also be disposed on the electrodes.
- the capping electrode layer CPE may be disposed to lower a contact resistance between the electrodes or wirings disposed on the first data conductive layer and the members disposed on a different layer in a contacting region. For example, when a contact between the first electrode 210 and the source/drain electrode DRT_SD of the driving transistor DRT or a contact between the second electrode 220 and the second conductive pattern VCP is performed, between the first electrode 210 and the source/drain electrode DRT_SD of the driving transistor DRT.
- a capping electrode layer (CPE) may be disposed thereon to reduce contact resistance.
- the capping electrode layer CPE may include a material such as indium tin oxide (ITO), indium zinc oxide (IZO), or indium tin-zinc oxide (ITZO), but is not limited thereto.
- the transistor GTR of the scan driver SDR and the gate electrode GTR_G may be connected to the light blocking layer BML.
- the gate electrode GTR_G and the light blocking layer BML may have the same voltage, and the gate electrode GTR_G serves as an upper gate electrode and the light blocking layer BML has the lower portion. It may serve as a gate electrode.
- the transistor GTR of the scan driver SDR may be driven in a double gate manner, and when the transistor GTR is turned off, a leakage current may be prevented or reduced from flowing in the channel region GTR_ACTc of the active layer GTR_ACT. Other overlapping descriptions will be omitted.
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Abstract
Description
Claims (28)
- 제1 방향으로 연장된 제1 전압 배선;상기 제1 전압 배선과 이격되고, 상기 제1 방향으로 연장된 데이터 라인;상기 제2 방향으로 연장된 스캔 라인;상기 스캔 라인과 이격되고 상기 제1 방향과 다른 제2 방향으로 연장된 센싱 라인;상기 제1 전압 배선과 상기 데이터 라인 상에 배치되고, 상기 제1 방향으로 연장되어 서로 이격 대향하도록 배치된 제1 내부 뱅크 및 제2 내부 뱅크;상기 제1 내부 뱅크 상에 배치되어 상기 제1 방향으로 연장된 제1 전극;상기 제2 내부 뱅크 상에 배치되어 상기 제1 방향으로 연장된 제2 전극; 및상기 제1 전극 및 상기 제2 전극 사이에 배치된 복수의 발광 소자를 포함하고,상기 발광 소자는 발광층을 포함하는 반도체 코어 및 상기 반도체 코어의 외면 중 적어도 일부를 둘러싸는 절연막을 포함하는 표시 장치.
- 제1 항에 있어서,상기 데이터 라인의 상기 제2 방향으로 이격되어 제1 방향으로 연장된 기준 전압 배선; 및상기 센싱 라인의 상기 제1 방향으로 이격되어 제2 방향으로 연장된 기준 전압 분배 라인을 더 포함하고,상기 기준 전압 분배 라인은 상기 기준 전압 배선과 전기적으로 연결된 표시 장치.
- 제2 항에 있어서,상기 데이터 라인은 상기 제1 전압 배선 및 상기 기준 전압 배선 사이에 배치되고,상기 센싱 라인은 상기 스캔 라인 및 상기 기준 전압 분배 라인 사이에 배치된 표시 장치.
- 제2 항에 있어서,상기 제1 방향으로 연장되며 상기 기준 전압 배선과 이격되어 배치되는 제2 전압 배선을 더 포함하고,상기 제1 전극은 구동 트랜지스터를 통해 상기 제1 전압 배선과 전기적으로 연결되고,상기 제2 전극은 상기 제2 전압 배선과 전기적으로 연결된 표시 장치.
- 제4 항에 있어서,상기 제2 전압 배선은 상기 제2 방향으로 연장된 부분을 더 포함하고,상기 제2 전압 배선의 상기 제2 방향으로 연장된 부분은 평면 상 상기 제2 전극과 부분적으로 중첩하는 표시 장치.
- 제1 항에 있어서,상기 제1 내부 뱅크는 평면 상 상기 제1 전압 배선과 부분적으로 중첩하고,상기 제2 내부 뱅크는 상기 데이터 라인과 두께 방향으로 비중첩하도록 배치된 표시 장치.
- 제6 항에 있어서,상기 제1 내부 뱅크 및 상기 제2 내부 뱅크가 배치된 영역을 둘러싸도록 상기 제1 방향 및 상기 제2 방향으로 연장되어 배치된 외부 뱅크를 더 포함하고,상기 제1 전압 배선은 상기 제2 내부 뱅크 및 상기 외부 뱅크 사이에서 상기 제1 방향으로 연장되고,상기 데이터 라인은 상기 외부 뱅크의 상기 제1 방향으로 연장된 부분과 두께 방향으로 중첩하는 표시 장치.
- 제6 항에 있어서,적어도 일부분이 상기 제1 전극과 중첩하고, 상기 발광 소자들이 배치되는 영역을 둘러싸도록 배치된 차폐 전극을 더 포함하고,상기 차폐 전극은 상기 발광 소자들이 배치된 영역을 기준으로 상기 제1 전극 및 상기 제1 내부 뱅크의 외측 일부를 덮도록 배치된표시 장치.
- 제6 항에 있어서,상기 제1 내부 뱅크와 이격 대향하도록 배치된 제3 내부 뱅크; 및상기 제3 내부 뱅크 상에 배치된 리페어 전극을 더 포함하고,상기 발광 소자는 상기 제1 전극과 상기 제2 전극 사이에 배치된 제1 발광 소자 및 상기 제1 전극과 상기 리페어 전극 사이에 배치된 제2 발광 소자를 더 포함하는 표시 장치.
- 제1 항에 있어서,상기 발광 소자의 상기 반도체 코어는, 제1 반도체층, 제2 반도체층 및 상기 제1 반도체층과 상기 제2 반도체층 사이에 배치된 상기 발광층을 포함하고,상기 절연막은 적어도 상기 발광층의 외면을 둘러싸도록 배치된 표시 장치.
- 제10 항에 있어서,상기 제1 전극 상에 배치되어 상기 제1 전극 및 상기 발광 소자의 일 단부와 전기적으로 연결되는 제1 접촉 전극 및상기 제2 전극 상에 배치되어 상기 제2 전극 및 상기 발광 소자의 타 단부와 전기적으로 연결되는 제2 접촉 전극을 더 포함하는 표시 장치.
- 제1 기판;상기 제1 기판 상에 배치된 반도체층으로써, 구동 트랜지스터의 제1 활성층을 포함하는 반도체층;상기 제1 기판 및 상기 반도체층 상에 배치된 제1 게이트 절연층;상기 제1 게이트 절연층 상에 배치된 제1 게이트 도전층으로써, 상기 구동 트랜지스터의 제1 게이트 전극을 포함하는 제1 게이트 도전층;상기 제1 게이트 도전층 상에 배치된 제1 층간 절연층;상기 제1 층간 절연층 상에 배치된 제1 데이터 도전층으로써, 상기 구동 트랜지스터의 소스/드레인 전극 및 제1 전압 배선을 포함하는 제1 데이터 도전층;상기 제1 데이터 도전층 상에 배치된 제1 보호층;상기 제1 보호층 상에 배치된 제1 평탄화층;상기 제1 평탄화층 상에 배치되고, 서로 이격 대향하는 제1 내부 뱅크 및 제2 내부 뱅크;상기 제1 내부 뱅크 상에 배치된 제1 전극 및 상기 제2 내부 뱅크 상에 배치된 제2 전극; 및상기 제1 전극과 상기 제2 전극 사이에 배치된 발광 소자를 포함하고,상기 발광 소자는 발광층을 포함하는 반도체 코어 및 상기 반도체 코어의 외면 중 적어도 일부를 둘러싸는 절연막을 포함하는 표시 장치.
- 제12 항에 있어서,상기 제1 전극은 상기 제1 보호층 및 상기 제1 평탄화층을 관통하는 전극 컨택홀을 통해 상기 구동 트랜지스터의 소스/드레인 전극과 전기적으로 연결되는 표시 장치.
- 제13 항에 있어서,상기 제1 게이트 도전층은 제2 전압 배선을 더 포함하고,상기 제2 전극은 상기 제2 전압 배선과 전기적으로 연결된 표시 장치.
- 제13 항에 있어서,상기 제1 데이터 도전층은 제2 전압 배선을 더 포함하고,상기 제2 전극은 상기 제2 전압 배선과 전기적으로 연결된 표시 장치.
- 제14 항에 있어서,상기 제1 데이터 도전층은 상기 층간 절연층을 관통하는 제1 배선 컨택홀을 통해 상기 제2 전압 배선과 접촉하는 도전 패턴을 더 포함하고,상기 제2 전극은 상기 제1 보호층 및 상기 제1 평탄화층을 관통하는 제2 배선 컨택홀을 통해 상기 도전 패턴과 접촉하는 표시 장치.
- 제12 항에 있어서,상기 제1 전극 상에 배치되고 상기 제1 전극 및 상기 발광 소자의 일 단부와 전기적으로 연결되는 제1 접촉 전극 및 상기 제2 전극 상에 배치되고 상기 제2 전극 및 상기 발광 소자의 타 단부와 전기적으로 연결되는 제2 접촉 전극을 더 포함하는 표시 장치.
- 제17 항에 있어서,상기 제1 접촉 전극 및 상기 제2 접촉 전극 상에 배치된 박막 봉지 구조물 및 상기 박막 봉지 구조물 상에 배치된 컬러 필터층을 더 포함하는 표시 장치.
- 제18 항에 있어서,상기 컬러 필터층과 상기 박막 봉지 구조물 사이에 배치된 컬러 제어층을 더 포함하는 표시 장치.
- 제17 항에 있어서,상기 제1 평탄화층 상에 배치되고 상기 제1 내부 뱅크 및 상기 제2 내부 뱅크와 각각 이격된 외부 뱅크를 더 포함하고,상기 외부 뱅크의 높이는 상기 제1 내부 뱅크 및 상기 제2 내부 뱅크의 높이보다 큰 표시 장치.
- 제20 항에 있어서,상기 외부 뱅크의 일 면 상에 배치된 반사층을 더 포함하는 표시 장치.
- 제12 항에 있어서,상기 제1 기판과 상기 반도체층 사이에 배치된 버퍼층; 및상기 버퍼층과 상기 제1 기판 사이에 배치되고 상기 제1 활성층과 부분적으로 중첩하는 차광층을 더 포함하는 표시 장치.
- 발광 영역 및 비발광 영역이 정의된 제1 기판;상기 제1 기판의 상기 비발광 영역 상에 배치되고, 구동 트랜지스터의 제1 활성층을 포함하는 반도체층;상기 비발광 영역에 배치되고, 상기 제1 활성층과 중첩하도록 배치된 제1 게이트 전극을 포함하는 제1 게이트 도전층;상기 비발광 영역 및 상기 발광 영역에 배치되어 제1 방향으로 연장된 제1 전압 배선;상기 발광 영역에 배치되고, 상기 제1 방향으로 연장되되 제2 방향으로 서로 이격 배치된 제1 내부 뱅크 및 제2 내부 뱅크;적어도 일부분이 상기 제1 내부 뱅크 상에 배치되고, 상기 제1 방향으로 연장된 부분을 포함하는 제1 전극;적어도 일부분이 상기 제2 내부 뱅크 상에 배치되고, 상기 제1 방향으로 연장된 부분을 포함하는 제2 전극; 및상기 제1 전극과 상기 제2 전극 사이에 배치되어 상기 제1 전극 및 상기 제2 전극과 전기적으로 연결된 복수의 발광 소자를 포함하고,상기 발광 소자는 발광층을 포함하는 반도체 코어 및 상기 반도체 코어의 외면 중 적어도 일부를 둘러싸는 절연막을 포함하는 표시 장치.
- 제23 항에 있어서,상기 비발광 영역에 배치되어 상기 제2 방향으로 연장된 스캔 라인; 및상기 제2 방향으로 연장되되 상기 스캔 라인과 이격된 센싱 라인을 더 포함하는 표시 장치.
- 제24 항에 있어서,상기 비발광 영역 및 상기 발광 영역에 배치되어 상기 제1 방향으로 연장된 기준 전압 배선; 및상기 비발광 영역에 배치되어 상기 제2 방향으로 연장되고 상기 기준 전압 배선과 전기적으로 연결된 기준 전압 분배 라인을 더 포함하는 표시 장치.
- 제23 항에 있어서,상기 제1 전극은 상기 제2 방향으로 연장된 제1 전극 줄기부 및 상기 제1 전극 줄기부로부터 상기 제1 방향으로 분지된 제1 전극 가지부를 포함하고,상기 제2 전극은 상기 제2 방향으로 연장된 제2 전극 줄기부 및 상기 제2 전극 줄기부로부터 상기 제1 방향으로 분지된 제2 전극 가지부를 포함하는 표시 장치.
- 제26 항에 있어서,상기 제1 전극 가지부 상에 배치되고 상기 제1 전극 및 상기 발광 소자의 일 단부와 전기적으로 연결되는 제1 접촉 전극 및상기 제2 전극 가지부 상에 배치되고 상기 제2 전극 및 상기 발광 소자의 타 단부와 전기적으로 연결되는 제2 접촉 전극을 더 포함하는 표시 장치.
- 제27 항에 있어서,상기 비발광 영역을 덮도록 배치되되 상기 발광 영역을 둘러싸도록 배치된 외부 뱅크를 더 포함하고,상기 외부 뱅크의 높이는 상기 제1 내부 뱅크 및 상기 제2 내부 뱅크의 높이보다 큰 표시 장치.
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| US17/794,938 US12433079B2 (en) | 2020-01-23 | 2020-02-27 | Display device |
| CN202080094244.4A CN115023814B (zh) | 2020-01-23 | 2020-02-27 | 显示装置 |
| EP20915229.7A EP4080574A4 (en) | 2020-01-23 | 2020-02-27 | DISPLAY DEVICE |
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| KR1020200009450A KR102818048B1 (ko) | 2020-01-23 | 2020-01-23 | 표시 장치 |
| KR10-2020-0009450 | 2020-01-23 |
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| US (1) | US12433079B2 (ko) |
| EP (1) | EP4080574A4 (ko) |
| KR (1) | KR102818048B1 (ko) |
| CN (1) | CN115023814B (ko) |
| WO (1) | WO2021149863A1 (ko) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4131376A1 (en) * | 2021-08-02 | 2023-02-08 | Samsung Display Co., Ltd. | Display device |
| EP4236657A1 (en) * | 2022-02-25 | 2023-08-30 | Samsung Display Co., Ltd. | Display device |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102873945B1 (ko) * | 2020-11-05 | 2025-10-20 | 엘지디스플레이 주식회사 | 전계발광 표시장치 |
| KR102912673B1 (ko) * | 2021-09-17 | 2026-01-15 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR20230059882A (ko) * | 2021-10-25 | 2023-05-04 | 삼성디스플레이 주식회사 | 표시 장치 및 그 제조 방법 |
| KR20230092041A (ko) * | 2021-12-16 | 2023-06-26 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR102888074B1 (ko) * | 2021-12-29 | 2025-11-19 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR20230110396A (ko) * | 2022-01-14 | 2023-07-24 | 삼성디스플레이 주식회사 | 표시 장치 및 이의 제조 방법 |
| KR20230156219A (ko) | 2022-05-04 | 2023-11-14 | 삼성디스플레이 주식회사 | 화소, 이를 포함하는 표시 장치, 및 표시 장치의 제조 방법 |
| KR20240029654A (ko) * | 2022-08-26 | 2024-03-06 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR20240065438A (ko) * | 2022-10-28 | 2024-05-14 | 삼성디스플레이 주식회사 | 표시 장치 및 이의 제조 방법 |
| KR20240106174A (ko) * | 2022-12-29 | 2024-07-08 | 엘지디스플레이 주식회사 | 표시 장치 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170124065A (ko) * | 2016-04-29 | 2017-11-09 | 엘지디스플레이 주식회사 | 백플레인 기판 및 이를 이용한 유기 발광 표시 장치 |
| KR20180057777A (ko) * | 2016-11-21 | 2018-05-31 | 엘지디스플레이 주식회사 | 대면적 초고해상도 평판 표시장치 |
| KR20190038150A (ko) * | 2017-09-29 | 2019-04-08 | 엘지디스플레이 주식회사 | 유기발광 다이오드 표시장치 |
| KR20200001649A (ko) * | 2018-06-26 | 2020-01-07 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR20200005711A (ko) * | 2018-07-06 | 2020-01-16 | 삼성디스플레이 주식회사 | 표시 장치 및 그 제조 방법 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3580092B2 (ja) * | 1997-08-21 | 2004-10-20 | セイコーエプソン株式会社 | アクティブマトリクス型表示装置 |
| KR100895312B1 (ko) | 2002-12-13 | 2009-05-07 | 삼성전자주식회사 | 다중 도메인 액정 표시 장치용 박막 트랜지스터 표시판 |
| JPWO2013069234A1 (ja) * | 2011-11-07 | 2015-04-02 | パナソニック株式会社 | 有機el表示パネル及び有機el表示装置 |
| KR102402599B1 (ko) * | 2015-12-16 | 2022-05-26 | 삼성디스플레이 주식회사 | 트랜지스터 표시판 및 그 제조 방법 |
| US10109696B2 (en) | 2015-12-29 | 2018-10-23 | Nlt Technologies, Ltd. | Display apparatus and method of manufacturing display apparatus |
| KR102630696B1 (ko) | 2016-05-17 | 2024-01-26 | 엘지디스플레이 주식회사 | 표시패널 및 이를 포함하는 표시 장치 |
| KR102675912B1 (ko) * | 2016-06-30 | 2024-06-17 | 엘지디스플레이 주식회사 | 백플레인 기판과 이의 제조 방법 및 이를 적용한 유기 발광 표시 장치 |
| KR102673721B1 (ko) | 2016-11-07 | 2024-06-11 | 삼성전자주식회사 | Led 패널 및 그 제조 방법 |
| US20180269260A1 (en) * | 2017-01-29 | 2018-09-20 | Emagin Corporation | Quantum dot array on directly patterned amoled displays and method of fabrication |
| CN107046003B (zh) * | 2017-06-02 | 2019-05-03 | 武汉华星光电技术有限公司 | 低温多晶硅tft基板及其制作方法 |
| KR102450621B1 (ko) * | 2017-10-12 | 2022-10-06 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR102414276B1 (ko) * | 2017-11-16 | 2022-06-29 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR102690047B1 (ko) * | 2017-11-29 | 2024-07-29 | 엘지디스플레이 주식회사 | 박막트랜지스터 어레이 기판 및 그를 포함하는 유기발광표시장치 |
| KR102299992B1 (ko) | 2018-04-25 | 2021-09-10 | 삼성디스플레이 주식회사 | 발광 장치, 이를 구비한 표시 장치, 및 그의 제조 방법 |
| KR102547345B1 (ko) | 2018-06-27 | 2023-06-23 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR102582613B1 (ko) * | 2018-07-10 | 2023-09-26 | 삼성디스플레이 주식회사 | 발광 장치 및 이를 구비한 표시 장치 |
-
2020
- 2020-01-23 KR KR1020200009450A patent/KR102818048B1/ko active Active
- 2020-02-27 US US17/794,938 patent/US12433079B2/en active Active
- 2020-02-27 WO PCT/KR2020/002805 patent/WO2021149863A1/ko not_active Ceased
- 2020-02-27 CN CN202080094244.4A patent/CN115023814B/zh active Active
- 2020-02-27 EP EP20915229.7A patent/EP4080574A4/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170124065A (ko) * | 2016-04-29 | 2017-11-09 | 엘지디스플레이 주식회사 | 백플레인 기판 및 이를 이용한 유기 발광 표시 장치 |
| KR20180057777A (ko) * | 2016-11-21 | 2018-05-31 | 엘지디스플레이 주식회사 | 대면적 초고해상도 평판 표시장치 |
| KR20190038150A (ko) * | 2017-09-29 | 2019-04-08 | 엘지디스플레이 주식회사 | 유기발광 다이오드 표시장치 |
| KR20200001649A (ko) * | 2018-06-26 | 2020-01-07 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR20200005711A (ko) * | 2018-07-06 | 2020-01-16 | 삼성디스플레이 주식회사 | 표시 장치 및 그 제조 방법 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4080574A4 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4131376A1 (en) * | 2021-08-02 | 2023-02-08 | Samsung Display Co., Ltd. | Display device |
| KR20230020043A (ko) * | 2021-08-02 | 2023-02-10 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR102847980B1 (ko) | 2021-08-02 | 2025-08-21 | 삼성디스플레이 주식회사 | 표시 장치 |
| EP4236657A1 (en) * | 2022-02-25 | 2023-08-30 | Samsung Display Co., Ltd. | Display device |
Also Published As
| Publication number | Publication date |
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| CN115023814B (zh) | 2025-03-25 |
| CN115023814A (zh) | 2022-09-06 |
| KR102818048B1 (ko) | 2025-06-11 |
| US12433079B2 (en) | 2025-09-30 |
| EP4080574A1 (en) | 2022-10-26 |
| EP4080574A4 (en) | 2024-02-28 |
| US20230361259A1 (en) | 2023-11-09 |
| KR20210095774A (ko) | 2021-08-03 |
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