WO2020149517A1 - 표시 장치 - Google Patents
표시 장치 Download PDFInfo
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- WO2020149517A1 WO2020149517A1 PCT/KR2019/016252 KR2019016252W WO2020149517A1 WO 2020149517 A1 WO2020149517 A1 WO 2020149517A1 KR 2019016252 W KR2019016252 W KR 2019016252W WO 2020149517 A1 WO2020149517 A1 WO 2020149517A1
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- transistor
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- 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
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- 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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6704—Thin-film transistors [TFT] having supplementary regions or layers in the thin films or in the insulated bulk substrates for controlling properties of the device
- H10D30/6713—Thin-film transistors [TFT] having supplementary regions or layers in the thin films or in the insulated bulk substrates for controlling properties of the device characterised by the properties of the source or drain regions, e.g. compositions or sectional shapes
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/674—Thin-film transistors [TFT] characterised by the active materials
- H10D30/6755—Oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate
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- 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
- H10D86/01—Manufacture or treatment
- H10D86/021—Manufacture or treatment of multiple TFTs
- H10D86/0221—Manufacture or treatment of multiple TFTs comprising manufacture, treatment or patterning of TFT semiconductor bodies
- H10D86/0223—Manufacture or treatment of multiple TFTs comprising manufacture, treatment or patterning of TFT semiconductor bodies comprising crystallisation of amorphous, microcrystalline or polycrystalline semiconductor materials
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- H—ELECTRICITY
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- 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
- H10D86/421—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 having a particular composition, shape or crystalline structure of the active layer
- H10D86/423—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 having a particular composition, shape or crystalline structure of the active layer comprising semiconductor materials not belonging to the Group IV, e.g. InGaZnO
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- 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
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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
- 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
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- 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
- H10H29/30—Active-matrix LED displays
- H10H29/37—Pixel-defining structures, e.g. banks between the LEDs
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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
- H10H29/00—Integrated devices, or assemblies of multiple devices, comprising at least one light-emitting semiconductor element covered by group H10H20/00
- H10H29/30—Active-matrix LED displays
- H10H29/41—Insulating layers formed between the driving transistors and the LEDs
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- 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
- H10D86/471—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 having different architectures, e.g. having both top-gate and bottom-gate TFTs
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- 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
- H10H20/81—Bodies
- H10H20/819—Bodies characterised by their shape, e.g. curved or truncated substrates
- H10H20/821—Bodies characterised by their shape, e.g. curved or truncated substrates of the light-emitting regions, e.g. non-planar junctions
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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
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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
- H10H29/00—Integrated devices, or assemblies of multiple devices, comprising at least one light-emitting semiconductor element covered by group H10H20/00
- H10H29/01—Manufacture or treatment
- H10H29/03—Manufacture or treatment using mass transfer of LEDs, e.g. by using liquid suspensions
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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
- H10H29/00—Integrated devices, or assemblies of multiple devices, comprising at least one light-emitting semiconductor element covered by group H10H20/00
- H10H29/30—Active-matrix LED displays
- H10H29/32—Active-matrix LED displays characterised by the geometry or arrangement of elements within a subpixel, e.g. arrangement of the transistor within its RGB subpixel
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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
- H10H29/00—Integrated devices, or assemblies of multiple devices, comprising at least one light-emitting semiconductor element covered by group H10H20/00
- H10H29/80—Constructional details
- H10H29/85—Packages
- H10H29/855—Optical field-shaping means, e.g. lenses
- H10H29/856—Reflecting means
Definitions
- the present invention relates to a display device, and more particularly, to a display device including a light emitting device having a size of a micrometer or nanometer and an oxide thin film transistor.
- 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 a light emitting device may be included.
- a light emitting diode LED
- OLED organic light emitting diode
- An inorganic light emitting diode using an inorganic semiconductor as a fluorescent material has an advantage in that it has durability even in a high temperature environment, and has higher efficiency of blue light than 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 has been continued.
- An object to be solved by the present invention is to provide a display device including an oxide thin film transistor as a circuit element layer for driving a light emitting device having a fine size.
- the display device includes a light emitting device, a first transistor transmitting a driving current to the light emitting device, and a second transistor transmitting a data signal to the first transistor.
- the transistor includes a first active layer
- the second transistor includes a second active layer including an oxide semiconductor
- the light emitting device has a second polarity different from the first polarity of the first conductive semiconductor having a first polarity.
- a second conductive type semiconductor and an active material layer disposed between the first conductive type semiconductor and the second conductive type semiconductor.
- the first active layer of the first transistor may include an oxide semiconductor.
- the oxide semiconductor may include indium-gallium-tin oxide (IGTO) or indium-gallium-zinc-tin oxide (IGZTO).
- IGTO indium-gallium-tin oxide
- IGZTO indium-gallium-zinc-tin oxide
- the light emitting device may have a length extending in one direction in a range of 4 ⁇ m to 7 ⁇ m, and an aspect ratio of 1.2 to 100.
- the first transistor may include a first gate electrode disposed under the first active layer.
- the first active layer may include a first conductor region, a second conductor region, and a channel region disposed between the first conductor region and the second conductor region.
- the first transistor is a first source connected to the first conductor region through a third gate electrode disposed on the first active layer and a first contact hole passing through an interlayer insulating layer disposed on the third gate electrode.
- a first drain electrode connected to the second conductor region through the electrode and the second contact hole passing through the interlayer insulating layer may be further included.
- the first active layer may include polycrystalline silicon.
- the first transistor may further include a light blocking layer disposed under the first active layer.
- the second transistor further includes a second gate electrode disposed under the second active layer, a second source electrode connected to one side of the second active layer, and a second drain electrode connected to the other side of the second active layer. can do.
- the data line is disposed spaced apart from the second source electrode of the second transistor, and further includes a conductive pattern connected to the data line and the second source electrode can do.
- a display device for solving the above problems is disposed on a substrate, a first gate electrode disposed on the substrate, a first gate insulating layer disposed on the first gate electrode, and a first gate insulating layer , A first active layer partially overlapping the first gate electrode and including an oxide semiconductor, a first interlayer insulating film disposed on the first active layer, a second gate electrode disposed on the first interlayer insulating film, and the second A second interlayer insulating film disposed on the gate electrode, a second active layer disposed on the second interlayer insulating film and partially overlapping the second gate electrode and including an oxide semiconductor, and a first disposed on the second interlayer insulating film A first conductive layer including a signal line and a source electrode formed on one side of the second active layer, wherein the first conductive layer partially overlaps one side of the source electrode and the first signal line It may further include a pattern.
- drain electrode disposed on the first gate insulating layer and contacting one side of the first active layer, a via layer disposed on the first conductive layer, and at least one light emitting element disposed on the via layer.
- the drain electrode may be electrically connected to one end of the light emitting element.
- the light emitting device may include a first conductivity type semiconductor having a first polarity, a second conductivity type semiconductor having a second polarity different from the first polarity, and an activity disposed between the first conductivity type semiconductor and the second conductivity type semiconductor. It may include a material layer.
- a display device for solving the above-described problem may include at least one of a base layer, first and second electrodes spaced apart in a first direction on the base layer, and the first electrode and the second electrode. And at least one light emitting device having a shape extending in the first direction and a driving transistor for transmitting a driving current to the light emitting device, wherein the driving transistor includes an active layer having an oxide semiconductor, and the light emitting device Is a first conductivity type semiconductor having a first polarity; A second conductivity type semiconductor having a second polarity different from the first polarity and an active material layer disposed between the first conductivity type semiconductor and the second conductivity type semiconductor may be included.
- a gate electrode may be disposed under the active layer.
- the first electrode and the second electrode may have a shape extending on the base layer in a second direction different from the first direction.
- the first electrode may further include a first contact electrode contacting one end of the light emitting element and a second contact electrode contacting the second electrode and the other end of the light emitting element.
- the light emitting device may have a length extending in the first direction in a range of 4 ⁇ m to 7 ⁇ m, and an aspect ratio in a range of 1.2 to 100.
- the first conductivity type semiconductor, the active material layer, and the second conductivity type semiconductor may be disposed in a direction parallel to an upper surface of the base layer.
- the display device may provide a display device including a light emitting device having a size of micrometers or nanometers.
- the display device may include a driving transistor including an oxide semiconductor to drive the light emitting device having the fine size.
- FIG. 1 is a perspective view illustrating a display device according to an exemplary embodiment.
- FIG. 2 is a block diagram schematically illustrating a display device according to an exemplary embodiment.
- FIG. 3 is a schematic plan view illustrating the display panel of FIG. 1.
- FIG. 4 is a circuit diagram illustrating one pixel of FIG. 2.
- FIG. 5 is an enlarged schematic view of part A of FIG. 3.
- FIG. 6 is a cross-sectional view of the circuit element layer taken along the line I-I' of FIG. 5.
- FIG. 7 is a partial plan view of a circuit element layer according to an embodiment.
- FIG. 8 is a cross-sectional view taken along line IIa-IIa' of FIG. 7.
- FIG. 9 is a cross-sectional view of the display element layer taken along the line I-I' and II-II' of FIG. 5.
- 10 to 12 are cross-sectional views of an element layer according to another embodiment.
- FIG. 13 is a schematic diagram of a light emitting device according to an embodiment.
- FIG. 14 is a schematic diagram of a light emitting device according to another embodiment.
- An element or layer being referred to as the "on" of another element or layer includes all cases in which another layer or other element is interposed immediately above or in between.
- the same reference numerals refer to the same components throughout the specification.
- FIG. 1 is a perspective view illustrating a display device according to an exemplary embodiment.
- 2 is a block diagram schematically illustrating a display device according to an exemplary embodiment.
- 3 is a schematic plan view illustrating the display panel of FIG. 1.
- the display device 1 includes a display panel 10, an integrated driving circuit 20, a scan driver 30, a circuit board 400, and a power supply circuit ( 50).
- the integrated driving circuit 20 may include a data driving unit 21 and a timing control unit 22.
- “upper”, “top”, and “upper surface” indicate the Z-axis direction
- “lower”, “bottom”, and “lower surface” indicate the opposite direction to the Z-axis direction
- “left”, “right”, “upper”, and “lower” indicate a direction when the display panel 10 is viewed from a plane. For example, “left” indicates the opposite direction of the X-axis direction, “right” indicates the X-axis direction, “up” indicates the Y-axis direction, and “lower” indicates the opposite direction of the Y-axis direction.
- the display panel 10 may be formed in a rectangular shape on a plane.
- the display panel 10 may have a rectangular planar shape having short sides in the first direction (X-axis direction) and long sides in the second direction (Y-axis direction).
- the corner where the short side of the first direction (X-axis direction) and the long side of the second direction (Y-axis direction) meet may be formed at right angles or rounded to have a predetermined curvature.
- the planar shape of the display panel 10 is not limited to a rectangle, and may be formed in another polygon, circle or oval shape.
- the display panel 10 is formed to be flat, the present invention is not limited thereto. At least one side of the display panel 10 may be formed to bend at a predetermined curvature.
- the display panel 10 may be divided into a display area DA and a non-display area NDA disposed around the display area DA.
- the display area DA is an area in which a plurality of pixels PX are formed to display an image.
- the display panel 10 includes data lines (DL1 to DLm, m is an integer of 2 or more), scan lines (SL1 to SLn, n is an integer of 2 or more) intersecting the data lines DL1 to DLm, and a first voltage
- the plurality of pixels PX may display colors by including one or more light emitting devices 300 emitting light of a specific wavelength.
- the light emitted from the light emitting device 300 may be externally displayed through the display area DA of the display panel 10.
- Each of the plurality of 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, but is not limited thereto.
- each sub-pixel PXn may emit light of the same color.
- FIG. 2 illustrates that each of the pixels PX includes three sub-pixels, the present invention is not limited thereto, and each of the pixels PX may include four or more sub-pixels.
- the integrated driving circuit 20 outputs signals and voltages for driving the display panel 10.
- the integrated driving circuit 20 may include a data driving unit 21 and a timing control unit 22.
- the data driving unit 21 receives digital video data DATA and a source control signal DCS from the timing control unit 22.
- the data driver 21 converts digital video data DATA into analog data voltages according to the source control signal DCS and supplies the data lines DL1 to DLm of the display panel 10.
- the timing controller 22 receives digital video data DATA and timing signals from the host system. Timing signals may include a vertical sync signal, a horizontal sync signal, a data enable signal, and a dot clock.
- the host system may be an application processor of a smartphone or tablet PC, a system on a chip of a monitor or TV, or the like.
- the timing controller 22 generates control signals for controlling the operation timing of the data driver 21 and the scan driver 30.
- the control signals may include a source control signal DCS for controlling the operation timing of the data driver 21 and a scan control signal SCS for controlling the operation timing of the scan driver 30.
- the integrated driving circuit 20 may be disposed in the non-display area NDA provided on one side of the display panel 10.
- the integrated driving circuit 20 is formed of an integrated circuit (IC) and can be mounted on the display panel 10 by a chip on glass (COG) method, a chip on plastic (COP) method, or an ultrasonic bonding method.
- COG chip on glass
- COP chip on plastic
- ultrasonic bonding method a method that bonds to the integrated driving circuit 20
- the present invention is not limited thereto, and for example, the integrated driving circuit 20 may be mounted on the circuit board 400 rather than the display panel 10.
- FIG. 2 illustrates that the integrated driving circuit 20 includes a data driving unit 21 and a timing control unit 22, the present invention is not limited thereto.
- the data driving unit 21 and the timing control unit 22 are not formed of one integrated circuit, but may be formed of separate integrated circuits.
- the data driver 21 is mounted on the display panel 10 by a chip on glass (COG) method, a chip on plastic (COP) method, or an ultrasonic bonding method, and the timing controller 22 is a circuit board 400 ).
- COG chip on glass
- COP chip on plastic
- the scan driver 30 receives a scan control signal SCS from the timing control unit 22.
- the scan driver 30 generates scan signals according to the scan control signal SCS and supplies them to the scan lines SL1 to SLn of the display panel 10.
- the scan driver 30 may be formed in the non-display area NDA of the display panel 10 including a plurality of transistors.
- the scan driver 30 may be formed of an integrated circuit, and in this case, may be mounted on a gate flexible film attached to the other side of the display panel 10.
- the circuit board 400 may be attached on pads provided at one edge of the display panel 10 using an anisotropic conductive film. Accordingly, lead lines of the circuit board 400 may be electrically connected to pads.
- the circuit board 400 may be a flexible film, such as a flexible printed circuit board, a printed circuit board, or a chip on film.
- the circuit board 400 may be bent to the lower portion of the display panel 10. In this case, one side of the circuit board 400 is attached to an edge of one side of the display panel 10, and the other side is disposed under the display panel 10 and connected to a system board on which the host system is mounted.
- the power supply circuit 50 may generate voltages required for driving the display panel 10 from the main power applied from the system board and supply it to the display panel 10.
- the power supply circuit 50 generates a first voltage QVDD and a second voltage QVSS for driving the light-emitting elements 300 of the display panel 10 from the main power supply, and thus the display panel 10 It may be supplied to the first voltage line (QVDDL) and the second voltage line (QVSSL).
- the power supply circuit 50 may generate and supply driving voltages for driving the integrated driving circuit 20 and the scan driving unit 30 from the main power.
- the power supply circuit 50 is formed of an integrated circuit and mounted on the circuit board 400, the embodiment of the present invention is not limited thereto.
- the power supply circuit 50 may be integrally formed in the integrated driving circuit 20.
- FIG. 3 shows a plan view of the display panel 10 of FIG. 1 in comparative detail.
- data pads DP1 to DPp, p are integers of 2 or more, floating pads FD1 and FD2, power pads PP1 and PP2, and floating lines FL1 and FL2 , Only the second voltage line QVSSL, the data lines DL1 to DLm, the first electrode lines 210, and the second electrode lines 220 are illustrated.
- a plurality of pixels PXs are disposed in the display area DA of the display panel 10, and a plurality of electrode lines 210 and 220 and a light emitting device therebetween are disposed in each pixel PX. 300) can be aligned.
- the plurality of pixels PX may be arranged in a first direction (X-axis direction) that is horizontal in the drawing, and a second direction (Y-axis direction) that is vertical.
- three sub-pixels PX1, PX2, and PX3 are exemplarily illustrated, but the display panel 10 includes a larger number of pixels PX or sub-pixels PX1, PX2, and PX3. It is obvious that you can.
- the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 of each of the pixels PX include first electrode lines 210, second electrode lines 220, And regions defined in a matrix form by the data lines DL1 to DLm.
- the pixels PX of FIG. 3 may be divided into a plurality, and each may constitute one pixel PX.
- various structures are possible, such as pixels not being arranged in parallel in the first direction (X-axis direction) and the second direction (Y-axis direction) but in a zigzag manner.
- the pixel PX is not disposed in the non-display area NDA, and may be defined as an area other than the display area DA in the display panel 10.
- the non-display area NDA may be covered by specific members so as not to be viewed from the outside of the display panel 10.
- Various members for driving the light emitting device 300 disposed in the display area DA may be disposed in the non-display area NDA.
- the display panel 10 may be provided with a plurality of pads DP, FP, and PP on one side of the display area DA, for example, a non-display area NDA located on a flat surface. Can.
- the plurality of pads may include a data pad (DP), a power pad (PP), and a floating pad (FP).
- the data pad DP may be connected to a plurality of data lines DL extending to each pixel PX of the display area DA.
- the data pad DP may transmit a data signal for driving each pixel PX to each pixel PX through the data line DL.
- the number of sub-pixels PXn in which one data line DL is connected to one data pad DP and the display panel 10 is arranged along the first direction (X-axis direction) of the display area DA. It may include as many data pads DP.
- the data lines DL1 to DLm may extend long in the second direction (Y-axis direction).
- One side of the data lines DL1 to DLm may be connected to the integrated driving circuit 20. Accordingly, data voltages of the integrated driving circuit 20 may be applied to the data lines DL1 to DLm.
- the first electrode lines 210 may be spaced apart at predetermined intervals in the first direction (X-axis direction). Due to this, the first electrode lines 210 may not overlap the data lines DL1 to DLm.
- the first electrode line 210 is connected to the first floating line FL1 and the second floating line FL2 of the non-display area NDA, respectively, at both ends. Then, it may be formed by being disconnected for each pixel PX or sub-pixel PXn.
- Each of the second electrode lines 220 may extend in a first direction (X-axis direction). Due to this, the second electrode lines 220 may overlap the data lines DL1 to DLm. Also, unlike the first electrode line 210, the second electrode lines 220 may be connected to the second voltage line QVSSL in the non-display area NDA. Accordingly, the second voltage QVSS of the second voltage line QVSSL may be applied to the second electrode lines 220.
- the non-display area NDA of the display panel 10 includes a pad portion PA including data pads DP1 to DPp, floating pads FD1 and FD2, and power pads PP1 and PP2.
- the driving circuit 20, the first floating line FL1, the second floating line FL2, and the second voltage line QVSSL may be disposed.
- the pad portion PA including data pads DP1 to DPp, floating pads FD1 and FD2, and power pads PP1 and PP2 has one side edge of the display panel 10, for example, It can be placed on the side edge.
- the data pads DP1 to DPp, the floating pads FD1 and FD2, and the power pads PP1 and PP2 may be arranged side by side in the first direction (X-axis direction) in the pad portion PA.
- the circuit board 400 may be attached to the data pads DP1 to DPp, the floating pads FD1 and FD2, and the power pads PP1 and PP2 using an anisotropic conductive film. Due to this, the circuit board 400 and the data pads DP1 to DPp, floating pads FD1 and FD2, and power pads PP1 and PP2 may be electrically connected.
- the integrated driving circuit 20 may be connected to the data pads DP1 to DPp through the link lines LL.
- the integrated driving circuit 20 may receive digital video data DATA and timing signals through the data pads DP1 to DPp.
- the integrated driving circuit 20 may convert digital video data DATA into analog data voltages and supply the data lines DL1 to DLm of the display panel 10.
- the second voltage line QVSSL may be connected to the first power pad PP1 and the second power pad PP2 of the pad portion PA.
- the second voltage line QVSSL may extend in the second direction (Y-axis direction) in the non-display area NDA of the left outer side and the right outer side of the display area DA.
- the second voltage line QVSSL may be connected to the second electrode line 220. Due to this, the second voltage (QVSS) of the power supply circuit 50 is provided through the circuit board 400, the first power pad (PP1), the second power pad (PP2), and the second voltage line (QVSSL) 2 may be applied to the electrode line 220.
- the first floating line FL1 may be connected to the first floating pad FD1 of the pad portion PA.
- the first floating line FL1 may extend in the second direction (Y-axis direction) in the non-display area NDA of the left outer side and the right outer side of the display area DA.
- the second floating line FL2 may be connected to the second floating pad FD2 of the pad portion PA.
- the second floating line FL2 may extend in the second direction (Y-axis direction) in the non-display areas NDA of the left outer side and the right outer side of the display area DA.
- the first and second floating pads FD1 and FD2 and the first and second floating lines FL1 and FL2 may be dummy pads and dummy lines to which no voltage is applied.
- the first floating line FL1 and the second floating line FL2 are lines for applying an alignment signal during the manufacturing process, and no voltage may be applied to the completed display device. Alternatively, a ground voltage may be applied to the first floating line FL1 and the second floating line FL2 to prevent static electricity in the completed display device.
- the display panel 10 may further include a first voltage line QVDDL for applying the first voltage QVDD to each pixel PX.
- the first voltage line QVDDL may be connected to another pad (not shown) on one side to apply a predetermined voltage to each pixel PX or sub-pixel PXn.
- an electric field may be formed in each of the pixels PX or sub-pixels PXn to align the light emitting devices 300.
- the light emitting devices 300 may be aligned by applying a dielectrophoretic force to the light emitting devices 300 using a dielectrophoresis method during a manufacturing process.
- a ground voltage is applied to the first electrode lines 210 and an alternating voltage is applied to the second electrode lines 220 to form an electric field in the pixel PX or the sub-pixel PXn, so that the light-emitting element 300 They can be arranged between each electrode by transmitting the dielectric force through the electric field.
- FIG. 4 is a circuit diagram illustrating one pixel of FIG. 2.
- Each of the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 includes at least one of the data lines DL1 to DLm and at least one of the scan lines SL1 to SLn, And a first voltage line QVDDL.
- the data line DLj may transmit a data signal to each sub-pixel PXn
- the scan line SLk may transmit scan signals GW and GB
- the first voltage line QVDDL may transmit a driving current or an alignment signal.
- Each of the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 is for supplying current to the light-emitting elements 300 and the light-emitting elements 300 as shown in FIG. 4. It may include a plurality of transistors and at least one capacitor.
- the plurality of transistors includes a first transistor TR1 applying a driving voltage to the light emitting devices 300 and a second transistor TR2 applying a data signal DATA to the gate electrode of the first transistor TR1.
- a first transistor TR1 applying a driving voltage to the light emitting devices 300
- a second transistor TR2 applying a data signal DATA to the gate electrode of the first transistor TR1.
- the sub-pixel PXn is a 2T1C (2Transistor-1capacitor) structure having one first transistor TR1 and a second transistor TR2 and one capacitor Cst, but is not limited thereto. no.
- the sub-pixel PXn may include a larger number of transistors and a plurality of capacitors.
- Each of the first and second transistors TR1 and TR2 may include a first electrode, a second electrode, and a gate electrode.
- One of the first electrode and the second electrode may be a source electrode, and the other may be a drain electrode.
- Each of the first and second transistors TR1 and TR2 may be formed of a thin film transistor.
- each of the first and second transistors TR1 and TR2 is formed as a P-type MOSFET (Metal Oxide Semiconductor Field Effect Transistor), but is not limited thereto.
- the first transistor TR1 and the second transistor TR2 may be formed of N-type MOSFETs. In this case, the positions of the source and drain electrodes of each of the first transistor TR1 and the second transistor TR2 may be changed.
- the first and second transistors TR1 and TR2 are P-type MOSFETs will be described.
- One end of the light emitting device 300 is connected to the first electrode line 210 of the display panel 10, and the other end of the light emitting device 300 is connected to the second electrode line 220.
- one of the first electrode line 210 and the second electrode line 220 may be an anode electrode and the other may be a cathode electrode. However, it is not limited to this, and may be the opposite.
- a case where the first electrode line 210 is an anode electrode and the second electrode line 220 is a cathode electrode is illustrated.
- the first electrode line 210 connected to the light emitting device 300 may be connected to the third node N3 of FIG. 4, and the second electrode line 220 may be connected to the second voltage line QVSSL.
- the light emitting device 300 may receive a predetermined current or signal transmitted to the first node N1 through the third node N3.
- the first transistor TR1 (or the driving transistor) is a first electrode connected to (or electrically connected to) the first node N1, a second electrode connected to the first voltage line QVDDL, and a second node A gate electrode connected to (N2) may be included.
- the first transistor TR1 applies the driving voltage applied from the first voltage line QVDDL to the light emitting device 300 based on the voltage of the second node N2 (or the voltage stored in the capacitor Cst described later). Can provide.
- the second transistor TR2 (or the switching transistor) includes a first electrode connected to the data line DLj, j is an integer satisfying 1 ⁇ j ⁇ m, a second electrode connected to the second node N2, and A gate electrode connected to the first scan line (SLk, k is an integer satisfying 1 ⁇ k ⁇ n) for supplying the first scan signal GW may be included.
- the second transistor TR2 is turned on in response to the first scan signal GW, and may transmit the data signal DATA transmitted from the data line DLj to the second node N2.
- the capacitor Cst may be connected between the second node N2 and the first voltage line QVDDL.
- the capacitor Cst may store or maintain the data signal DATA provided.
- 5 is an enlarged schematic view of part A of FIG. 3. 5 may be understood as an enlarged view by rotating part A of FIG. 3 180°.
- the pixel PX may include a first sub-pixel PX1, a second sub-pixel PX2, and a third sub-pixel PX3.
- the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 of each of the pixels PX include scan lines SLk, SLk+1 and data lines DLj, DLj. +1, DLj+2, DLj+3) may be arranged in a matrix form in regions defined by the cross structure.
- the scan lines SLk, SLk+1 are arranged to extend in the first direction (X-axis direction), and the data lines DLj, DLj+1, DLj+2, DLj+3 are arranged in the first direction (X-axis).
- Direction and may extend and extend in a second direction (Y-axis direction) intersecting.
- Each of the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 includes a first electrode line 210, a second electrode line 220, and a plurality of light emitting devices 300 It may include.
- the first electrode line 210 and the second electrode line 220 are electrically connected to the light emitting devices 300 and may be respectively applied with voltage so that the light emitting devices 300 emit light.
- the voltage applied to the light emitting device 300 to emit light may be transmitted through the first transistor TR1 of FIG. 4.
- each of the electrode lines 210 and 220 may be used to form an electric field in the pixel PX to align the light emitting device 300.
- the voltage applied to align the light emitting device 300 may be transmitted through the first transistor TR1 of FIG. 4.
- the plurality of electrode lines 210 and 220 may include a first electrode line 210 and a second electrode line 220.
- the first electrode line 210 is a pixel electrode separated for each pixel PX
- the second electrode line 220 can be a common electrode commonly connected along a plurality of pixels PX.
- One of the first electrode line 210 and the second electrode line 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 may be the opposite.
- the first electrode line 210 and the second electrode line 220 are first in the electrode stem portions 210S and 220S and the electrode stem portions 210S and 220S, respectively, which are disposed to extend in the first direction (X-axis direction). It may include at least one electrode branch portion 210B and 220B extending and branching in a second direction (Y-axis direction) that is a direction intersecting the direction (X-axis direction).
- the first electrode line 210 is branched from the first electrode stem portion 210S and the first electrode stem portion 210S extending in the first direction (the X-axis direction), but in the second direction (Y It may include at least one first electrode branch portion 210B extending in the axial direction).
- the first electrode stem portion 210S of any one pixel is substantially the same straight line as the first electrode stem portion 210S of neighboring pixels belonging to the same row (eg, adjacent in the first direction (X-axis direction)). Can be set on.
- the first electrode stem portion 210S of one pixel is terminated with both ends spaced between each pixel PX, but the first electrode stem portion 210S of the neighboring pixel is the first electrode row of the one pixel. It may be aligned with the extension line of the base 210S. Accordingly, the first electrode stem portion 210S disposed in each pixel PX may apply different electric signals to each of the first electrode branch portions 210B, and each of the first electrode branch portions 210B may be applied. It can be driven separately.
- the arrangement of the first electrode stem portion 210S may be formed as one connected stem electrode in the manufacturing process, and may be formed by cutting through a laser or the like before aligning the light emitting device 300.
- the first electrode branch portion 210B is branched from at least a portion of the first electrode stem portion 210S, and is disposed to extend in the second direction (Y-axis direction), and is disposed to face the first electrode stem portion 210S. It can be terminated in a state spaced apart from the second electrode stem 220S.
- first electrode branch portions 210B may be disposed in each pixel PX.
- two first electrode branch portions 210B are disposed, and the second electrode branch portion 220B is disposed therebetween, but the present invention is not limited thereto.
- 210B may be disposed.
- the second electrode branch portion 220B is disposed between the first electrode branch portions 210B, so that each sub-pixel PXn has a symmetrical structure based on the second electrode branch portion 220B. Can. However, it is not limited thereto.
- the second electrode line 220 extends in the first direction (X-axis direction) and is spaced apart from the first electrode stem portion 210S to face the second electrode stem portion 220S and the second electrode stem portion 220S. ), but may include at least one second electrode branch portion 220B extending in the second direction (Y-axis direction) to be spaced apart from the first electrode branch portion 210B.
- the second electrode stem portion 220S may extend to the plurality of pixels PX whose other ends are adjacent in the first direction D1. Accordingly, one end of the second electrode stem portion 220S of any one pixel may be connected to one end of the second electrode stem portion 220S of a neighboring pixel between each pixel PX.
- the second electrode branch portion 220B may be spaced apart from the first electrode branch portion 210B to face each other, and may be terminated while being spaced apart from the first electrode stem portion 210S. That is, one end of the second electrode branch part 220B may be connected to the second electrode stem part 220S, and the other end may be disposed in the pixel PX while being spaced apart from the first electrode stem part 210S. have.
- the first electrode branch portion 210B extends in one direction in the second direction (Y-axis direction), and the second electrode branch portion 220B extends in the other direction in the second direction (Y-axis direction), and each branch One end of the portion may be disposed in opposite directions to each other based on the center of the pixel PX.
- the present invention is not limited thereto, and the first electrode stem portion 210S and the second electrode stem portion 220S may be spaced apart from each other in the same direction based on the center of the pixel PX.
- the first electrode branch portions 210B and the second electrode branch portions 220B branched from the electrode stem portions 210S and 220S may extend in the same direction.
- a plurality of light emitting devices 300 may be arranged between the first electrode branch portion 210B and the second electrode branch portion 220B. At least a part of the plurality of light emitting devices 300 may have one end electrically connected to the first electrode branch portion 210B, and the other end electrically connected to the second electrode branch portion 220B.
- the plurality of light emitting devices 300 may be spaced apart in the second direction (Y-axis direction) and may be substantially parallel to each other.
- the spacing between the light emitting elements 300 is not particularly limited.
- a plurality of light-emitting elements 300 are arranged adjacently to form a group, and the other plurality of light-emitting elements 300 may be grouped to be spaced apart at regular intervals, and have uneven density, but in one direction. It may be oriented and aligned.
- Contact electrodes 260 may be disposed on the first electrode branch portion 210B and the second electrode branch portion 220B, respectively.
- the plurality of contact electrodes 260 may be disposed to extend in the second direction (Y-axis direction), but may be disposed to be spaced apart from each other in the first direction (X-axis direction).
- the contact electrode 260 may be in contact with at least one end of the light emitting device 300, and the contact electrode 260 may be contacted with the first electrode line 210 or the second electrode line 220 to receive an electric signal. Can. Accordingly, the contact electrode 260 may transmit an electrical signal transmitted from each electrode line 210 or 220 to the light emitting device 300.
- the contact electrodes 260 are disposed to partially cover them on the electrode branch portions 210B and 220B, and the first contact electrode 261 and the second contact electrode contacting one end or the other end of the light emitting device 300 (262) may be included.
- the first contact electrode 261 is disposed on the first electrode branch portion 210B, and may be in contact with one end electrically connected to the first electrode line 210 of the light emitting device 300.
- the second contact electrode 262 is disposed on the second electrode branch portion 220B and may be in contact with the other end electrically connected to the second electrode line 220 of the light emitting device 300.
- both ends of the light emitting device 300 electrically connected to the first electrode branch portion 210B or the second electrode branch portion 220B may be an n-type or p-type conductive semiconductor layer doped.
- the light emitting device 300 electrically connected to the second electrode branch part 220B May be an n-type doped conductive semiconductor layer.
- the present invention is not limited thereto, and may be the opposite.
- the first electrode stem portion 210S may be electrically connected to the first transistor TR1 described later through the electrode contact hole CNTD.
- the second electrode stem portion 220S may be connected to the second voltage line QVSSL through an electrode contact hole located in the non-display area NDA.
- a separate electrode contact hole may be omitted for each sub-pixel PXn, unlike the first electrode stem portion 210S of the second electrode stem portion 220S.
- the present invention is not limited thereto, and a predetermined electrode contact hole may be formed on the second electrode stem portion 220S to be electrically connected to the second voltage line QVSSL.
- FIG. 5 shows only a plan view in which the first electrode line 210, the second electrode line 220, and the light emitting devices 300 of the display panel 10 are disposed.
- the first electrode line 210 and the second electrode line 220 of the display panel 10 may be electrically connected to members disposed on a circuit element layer positioned below.
- the members disposed on the circuit element layer may constitute a plurality of elements, including a semiconductor layer and a plurality of conductive layers.
- FIG. 6 is a cross-sectional view of the circuit element layer taken along the line I-I' of FIG. 5.
- 7 is a partial plan view of a circuit element layer according to an embodiment
- FIG. 8 is a cross-sectional view taken along line IIa-IIa' of FIG. 7.
- 9 is a cross-sectional view of the display element layer taken along the line I-I' and II-II' of FIG. 5.
- the display panel 10 may include a circuit element layer 10a and a display element layer 10b.
- the circuit element layer 10a includes first and second transistors TR1 and TR2 and a capacitor Cst described with reference to FIG. 4, and the display element layer 10b includes a first electrode line 210 and a first 2 may include an electrode line 220 and a light emitting device 300.
- the layout diagram of one sub-pixel PXn is illustrated in the drawing, it is obvious that other sub-pixels PXn also have the same layout. Hereinafter, it will be described based on one sub-pixel PXn.
- the I-I' line and the II-II' line of FIG. 6 may correspond to the I-I' line and the II-II' line of FIG. 5, respectively. That is, the sectional view illustrated in FIG. 6 may be understood to include a configuration located in the circuit element layer 10a of the plan view of FIG. 5.
- the I-I' line and the II-II' line of FIG. 9 partially correspond to the I-I' line and the II-II' line of FIG. 5, and partially show the configuration located in the display element layer 10b. It can be understood as.
- a plurality of members of the display panel 10 will be described in detail with reference to FIGS. 5 to 9.
- the circuit element layer 10a includes a first transistor 120 and a second transistor 140, a data line 191, a conductive pattern 193, a voltage line 195, and a via layer It may include 200.
- the display element layer 10b is disposed on the via layer 200, the partition walls 410, 420, the reflective layers 211, 221 and the electrode layers 212, 222, the first insulating layer 510, and the first contact electrode 261 and the second contact electrode 262, the second insulating layer 520, and the passivation layer 550.
- the reflective layers 211 and 221 and the electrode layers 212 and 222 may form one electrode line 210 and 220.
- Each of the above-described layers may be formed of a single film, but may also be formed of a laminated film including a plurality of films. Also, another layer may be further disposed between each layer.
- the circuit element layer 10a is not limited to the structure illustrated in FIGS. 6 to 8, and in addition, more conductive layers, insulating layers, signal lines, and the like may be further disposed.
- circuit element layer 10a of the display panel 10 will be described with reference to FIGS. 6 to 8, and the display element layer 10b will be described later with reference to FIGS. 5 and 9.
- the substrate 100 supports layers disposed thereon.
- the substrate 100 may be an insulating substrate made of an insulating material such as glass, quartz, or polymer resin.
- the polymer material are polyethersulphone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene napthalate (PEN) ), polyethylene terepthalate (PET), polyphenylene sulfide (PPS), polyallylate, polyimide (PI), polycarbonate (PC), cellulose triacetate ( cellulose triacetate (CAT), cellulose acetate propionate (CAP), or combinations thereof.
- the substrate 100 may include a metal material.
- the substrate 100 may be a rigid substrate, but may also be a flexible substrate capable of bending, folding, rolling, and the like. However, it is not limited thereto.
- the buffer layer 110 may be disposed on the substrate 100.
- the buffer layer 110 may prevent the diffusion of impurity ions, prevent penetration of moisture or outside air, and may perform a surface flattening function.
- the buffer layer 110 may include silicon nitride, silicon oxide or silicon oxynitride. Meanwhile, another plurality of layers may be further disposed between the substrate 100 and the buffer layer 110.
- the first transistors 120 121, 123, 124, and 126 and the second transistors 140: 141, 143, 144, and 146 are disposed on the substrate 100.
- the first transistor 120 is a driving transistor for driving the display element layer 10b with the first transistor TR1 of FIG. 4, and the second transistor 140 is a data signal with the second transistor TR2 of FIG. 4. It may be a switching transistor for transferring (DATA) to the first transistor TR1.
- the first transistor 120 includes a first gate electrode 121, a first active layer 126, a first source electrode 123 and a first drain electrode 124.
- the second transistor 140 includes a second gate electrode 141, a second active layer 146, a second source electrode 143, and a second drain electrode 144.
- the first gate electrode 121 and the second gate electrode 141 are disposed on the buffer layer 110.
- the first gate electrode 121 is a gate electrode of the first transistor 120
- the second gate electrode 141 can constitute a gate electrode of the second transistor 140.
- the first gate electrode 121 and the second gate electrode 141 may be formed of a conductive metal layer.
- the first gate electrode 121 and the second gate electrode 141 are molybdenum (Mo), aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), Nickel (Ni), Neodymium (Nd), Iridium (Ir), Chromium (Cr), Calcium (Ca), Titanium (Ti), Tantalum (Ta), Tungsten (W), Copper (Cu) It may include one or more metals.
- the first gate insulating layer 130 is disposed on the first gate electrode 121 and the second gate electrode 141.
- the first gate insulating layer 130 may be a gate insulating layer having a gate insulating function.
- the first gate insulating layer 130 may include a silicon compound, a metal oxide, or the like.
- the first gate insulating layer 130 may include silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, tantalum oxide, hafnium oxide, zirconium oxide, titanium oxide, and the like. These may be used alone or in combination with each other.
- the first gate insulating layer 130 may be a single layer or a multi-layer layer formed of a stacked layer of different materials.
- the first active layer 126 and the second active layer 146 are disposed on the first gate insulating layer 130.
- the first active layer 126 and the second active layer 146 may be active layers forming channels of the first transistor 120 and the second transistor 140, respectively.
- the first active layer 126 and the second active layer 146 may each include a channel region.
- the first active layer 126 overlaps the first gate electrode 121 with the first gate insulating layer 130 therebetween, and the overlapped region may form a first channel region.
- the second active layer 146 overlaps the second gate electrode 141 with the first gate insulating layer 130 therebetween, and the overlapped region may form a second channel region.
- the first active layer 126 and the second active layer 146 may be oxide semiconductors.
- the oxide semiconductors include indium, zinc, gallium, tin, titanium, aluminum, hafnium (Hf), zirconium (Zr), magnesium (Mg), etc., a bicomponent compound (ABx), a ternary compound (ABxCy), and a quaternary component Compound (ABxCyDz).
- the oxide semiconductor may include ITZO (oxide containing indium, tin, and titanium) or IGZO (oxide including indium, gallium, and tin).
- the first transistor 120 and the second transistor 140 have a bottom-gate structure in which a channel region is disposed above the gate electrodes 121 and 141, respectively.
- the channel region may include an oxide semiconductor. Accordingly, in manufacturing the display device 1, the manufacturing cost of the circuit element layer 10a can be reduced.
- the first source/drain electrodes 123 and 124 and the second source/drain electrodes 143 and 144 are disposed on the first active layer 126 and the second active layer 146 on the first gate insulating layer 130, respectively. .
- the first source electrode 123 is disposed on one side of the first active layer 126, and the first drain electrode 124 is disposed on the other side of the first active layer 126.
- the second source electrode 143 is disposed on one side of the second active layer 146, and the second drain electrode 144 is disposed on the other side of the second active layer 146.
- the first source/drain electrodes 123, 124 and the second source/drain electrodes 143, 144 are molybdenum (Mo), aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), and magnesium (Mg), Gold (Au), Nickel (Ni), Neodymium (Nd), Iridium (Ir), Chromium (Cr), Calcium (Ca), Titanium (Ti), Tantalum (Ta), Tungsten (W), Copper (Cu) may include one or more metals selected from.
- a data line 191 and a conductive pattern 193 may be further disposed on the first gate insulating layer 130.
- the data line 191 may transmit a data signal ('DATA' in FIG. 4, hereinafter the same).
- One side of the conductive pattern 193 is disposed on the data line 191, and the other side is disposed on the second source electrode 143 of the second transistor 140.
- the second transistor 140 may receive a data signal DATA transmitted to the data line 191 through the conductive pattern 193.
- the data line 191 may extend in one direction. As illustrated in FIG. 5, the data line 191 may extend in the second direction (Y-axis direction) to extend to a neighboring pixel or sub-pixel beyond the boundary of the pixel PX or sub-pixel PXn. have.
- the data line 191 may be disposed adjacent to one side of a pixel or sub-pixel, for example, on the left side.
- the gate line GL extends in one direction but partially overlaps with the data line 191.
- the gate line GL may extend in the first direction (X-axis direction) and overlap the data line 191 extending in the second direction (Y-axis direction).
- the data line 191 may include a protrusion 191a protruding in a first direction (X-axis direction) in an area overlapping with the gate line GL.
- the protrusion 191a of FIG. 7 may be the data line 191 of FIG. 8.
- the protrusion 191a of the data line 191 may protrude in the first direction (X-axis direction), and may be spaced apart from the second source electrode 143 of the second transistor 140 and terminated.
- the protrusion 191a of the data line 191 and the second source electrode 143 of the second transistor 140 are spaced apart from each other, and a conductive pattern 193 may be disposed between them.
- the data line 191 and the conductive pattern 193 may include the same material as the second source electrode 143. That is, the conductive pattern 193 may include a conductive metal material to electrically connect the data line 191 and the second source electrode 143.
- the data signal DATA transmitted from the data line 191 may be transmitted to the second source electrode 143 of the second transistor 140 through the protrusion 191a and the conductive pattern 193.
- the first passivation layer 150 is disposed on the first source/drain electrodes 123 and 124, the second source/drain electrodes 143 and 144, the data line 191, and the conductive pattern 193.
- the first passivation layer 150 may be formed of an inorganic layer, for example, a silicon oxide layer (SiOx), a silicon nitride layer (SiNx), or multiple layers thereof.
- the voltage line 195 is disposed on the first passivation layer 150. Although not illustrated in the drawing, the voltage line 195 is electrically connected to the first transistor 120 to transmit a voltage signal ('QVDD' or'QVSS' in FIG. 4).
- the voltage line 195 may extend in one direction.
- the voltage line 195 may extend in a second direction (Y-axis direction), and may extend beyond a boundary of the pixel PX or sub-pixel PXn to neighboring pixels or sub-pixels.
- the voltage line 195 may be disposed adjacent to one side of a pixel or sub-pixel, for example, on the right side.
- the second passivation layer 170 is disposed on the voltage line 195 and the first passivation layer 150.
- the second passivation layer 170 may be disposed to cover other members not shown in the drawing, including the voltage line 195.
- the second passivation layer 170 may substantially perform the same function as the first passivation layer 150.
- the via layer 200 may be formed on the second passivation layer 170.
- the via layer 200 is disposed to completely cover the circuit element layer 10a, and may function to support members of the display element layer 10b, which will be described later.
- the via layer 200 may function to flatten the step due to the first and second transistors 120 and 140 of the circuit element layer 10a, the voltage line 195, and the like.
- the via layer 200 may be formed of an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin. have.
- the first drain electrode 124 of the first transistor 120 has an electrode contact hole (CNTD) penetrating through the via layer 200, the second passivation layer 170, and the first passivation layer 150. Through this, it can be electrically connected to the first electrode line 210 of the display element layer 10b described later.
- the first transistor 120 is connected to the voltage line 195 and the second drain electrode 144 of the second transistor 140 to transmit an electrical signal to the first electrode line 210 of the display element layer 10b. have.
- circuit element layer 10a shows only some members of the circuit element layer 10a, and the present embodiment is not limited thereto.
- the circuit element layer 10a may include a larger number of members not shown in the figure.
- a plurality of partition walls 410, 420, and 430 are disposed on the via layer 200.
- the plurality of partition walls 410, 420, and 430 may be disposed to be spaced apart from each other in each sub-pixel PXn.
- the plurality of partition walls 410, 420, and 430 are disposed at a boundary between the first partition wall 410, the second partition wall 420, and the sub-pixel PXn adjacent to the center of the sub-pixel PXn. 430 may be included.
- the third partition wall 430 has a function of blocking the ink I from exceeding the boundary of the sub-pixel PXn when the ink I is jetted by using the inkjet printing device during manufacture of the display panel 10. It can be done.
- the member is disposed on the third partition wall 430 so that the third partition wall 430 supports it.
- it is not limited thereto.
- the first partition wall 410 and the second partition wall 420 are spaced apart from each other and disposed to face each other.
- the first electrode line 210 may be disposed on the first partition wall 410
- the second electrode line 220 may be disposed on the second partition wall 420. 5 and 9, it may be understood that the first electrode branch portion 210B is disposed on the first partition wall 410 and the second partition wall 420 is disposed on the second partition wall 420.
- the first partition wall 410, the second partition wall 420, and the third partition wall 430 may be formed in substantially the same process. Accordingly, the partition walls 410, 420, and 430 may form one grid pattern.
- the plurality of partition walls 410, 420, and 430 may include polyimide (PI).
- the plurality of partition walls 410, 420, and 430 may have a structure in which at least a portion of the via layer 200 protrudes.
- the partition walls 410, 420, and 430 may protrude upwards with respect to a plane on which the light emitting device 300 is disposed, and at least a portion of the protruding portions may have a slope.
- the shape of the partition walls 410, 420, and 430 of the protruding structure is not particularly limited. As shown in the figure, the first partition wall 410 and the second partition wall 420 protrude to the same height, but the third partition wall 430 may have a shape protruding to a higher position.
- the reflective layers 211 and 221 may be disposed on the first partition wall 410 and the second partition wall 420, and the electrode layers 212 and 222 may be disposed on the reflective layers 211 and 221.
- the reflective layers 211 and 221 and the electrode layers 212 and 222 may constitute electrodes 21 and 22, respectively.
- the reflective layers 211 and 221 include a first reflective layer 211 and a second reflective layer 221.
- the first reflective layer 211 may cover the first partition wall 410 and the second reflective layer 221 may cover the second partition wall 420.
- a portion of the reflective layers 211 and 221 is electrically connected to the circuit element layer 10a through a contact hole passing through the via layer 200.
- the reflective layers 211 and 221 may reflect light emitted from the light emitting device 300 including a material having high reflectance.
- the reflective layers 211 and 221 may include materials such as silver (Ag), copper (Cu), indium tin oxide (ITO), indium zinc oxide (IZO), or indium tin-zinc oxide (ITZO). , But is not limited thereto.
- the electrode layers 212 and 222 include a first electrode layer 210B and a second electrode layer 220B.
- the electrode layers 212 and 222 may have substantially the same pattern as the reflective layers 211 and 221.
- the first reflective layer 211 and the first electrode layer 210B are disposed to be spaced apart from the second reflective layer 221 and the second electrode layer 220B.
- the electrode layers 212 and 222 may include materials such as Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), and Indium Tin-Zinc Oxide (ITZO), but are not limited thereto.
- ITO Indium Tin Oxide
- IZO Indium Zinc Oxide
- ITZO Indium Tin-Zinc Oxide
- the reflective layers 211 and 221 and the electrode layers 212 and 222 may form a structure in which one or more layers of a transparent conductive layer such as ITO, IZO, ITZO, and a metal layer such as silver and copper are stacked, respectively.
- the reflective layers 211 and 221 and the electrode layers 212 and 222 may form a stacked structure of ITO/silver (Ag)/ITO/IZO.
- the first electrode line 210 and the second electrode line 220 may be formed as one layer. That is, the reflective layers 211 and 221 and the electrode layers 212 and 222 may be formed as one single layer to transmit electric signals to the light emitting device 300 and reflect light.
- the first electrode line 210 and the second electrode line 220 may be alloys including aluminum (Al), nickel (Ni), and lanthanum (La) as a highly reflective conductive material. However, it is not limited thereto.
- the first insulating layer 510 is disposed to partially cover the first electrode line 210 and the second electrode line 220.
- the first insulating layer 510 is disposed to cover most of the top surfaces of the first electrode line 210 and the second electrode line 220, but a portion of the first electrode line 210 and the second electrode line 220 is disposed. Can be exposed.
- the first insulating layer 510 is a region in which the first electrode line 210 and the second electrode line 220 are spaced apart, and an opposite side of the region of the first electrode line 210 and the second electrode line 220. It can be arranged to partially cover.
- the first insulating layer 510 is disposed such that the relatively flat upper surfaces of the first electrode line 210 and the second electrode line 220 are exposed, and each electrode line 210 and 220 is provided with the first partition wall 410. 2 is arranged to overlap the inclined side of the partition 420.
- the first insulating layer 510 forms a flat upper surface so that the light emitting device 300 is disposed, and the upper surface extends in one direction toward the first electrode line 210 and the second electrode line 220.
- the extended portion of the first insulating layer 510 ends on the inclined side surfaces of the first electrode line 210 and the second electrode line 220. Accordingly, the contact electrode 260 is in contact with the exposed first electrode line 210 and the second electrode line 220, and smoothly with the light emitting device 300 on a flat top surface of the first insulating layer 510 Can contact you.
- the first insulating layer 510 may protect the first electrode line 210 and the second electrode line 220 and insulate them from each other. Further, the light emitting device 300 disposed on the first insulating layer 510 may be prevented from being directly damaged by contact with other members.
- the light emitting device 300 may be disposed on the first insulating layer 510.
- the light emitting device 300 may be disposed on at least one of the first insulating layer 510 between the first electrode line 210 and the second electrode line 220.
- the light emitting device 300 may be provided with a plurality of layers in a horizontal direction to the via layer 200.
- the light emitting device 300 of the display panel 10 includes the above-described conductive type semiconductor and an active layer, and they may be sequentially arranged in a horizontal direction on the via layer 200.
- the light emitting device 300 includes a first conductivity type semiconductor 310, an active material layer 330, a second conductivity type semiconductor 320, and a conductive electrode layer 370 in the via layer 200. It may be sequentially arranged in a horizontal direction. However, it is not limited thereto.
- the order in which the plurality of layers of the light emitting device 300 are arranged may be in the opposite direction, and in some cases, when the light emitting device 300 has a different structure, the plurality of layers are in a direction perpendicular to the via layer 200. It may be deployed.
- the second insulating layer 520 may be partially disposed on the light emitting device 300.
- the second insulating layer 520 may function to protect the light emitting device 300 and fix the light emitting device 300 in the manufacturing process of the display panel 10.
- the second insulating layer 520 may be disposed to surround the outer surface of the light emitting device 300. That is, some of the materials of the second insulating layer 520 may be disposed between the lower surface of the light emitting device 300 and the first insulating layer 510.
- the second insulating layer 520 may extend in the second direction D2 between the first electrode branch portion 210B and the second electrode branch portion 220B in a planar shape and have an island-like or linear shape.
- the contact electrode 260 is disposed on each electrode line 210 and 220 and the second insulating layer 520.
- the first contact electrode 261 and the second contact electrode 262 are spaced apart from each other on the second insulating layer 520. Accordingly, the second insulating layer 520 may insulate the first contact electrode 261 and the second contact electrode 262 from each other.
- the first contact electrode 261 may contact at least one end of the first electrode line 210 and the light emitting device 300 to which at least the first insulating layer 510 is patterned and exposed.
- the second contact electrode 262 may contact the other end of the second electrode line 220 and the light emitting device 300 to which at least the first insulating layer 510 is patterned and exposed.
- the first and second contact electrodes 26a and 26b respectively contact both end sides of the light emitting device 300, for example, the first conductivity type semiconductor 310, the second conductivity type semiconductor 320, or the conductive electrode layer 370, respectively. can do.
- the first insulating layer 510 forms a flat upper surface, so that the contact electrode 260 can smoothly contact the side surface of the light emitting device 300.
- the contact electrode 260 may include a conductive material.
- it may include ITO, IZO, ITZO, aluminum (Al). However, it is not limited thereto.
- the passivation layer 550 is formed on the second insulating layer 520 and the second contact electrode 262 to function to protect members of the display element layer 10b against the external environment.
- first insulating layer 510, second insulating layer 520, and passivation layer 550 may include an inorganic insulating material or an organic insulating material.
- first insulating layer 510 and the passivation layer 550 are silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiOxNy), aluminum oxide (Al 2 O 3 ), aluminum nitride (AlN) and the like.
- the second insulating layer 520 may include a photoresist or the like as an organic insulating material. However, it is not limited thereto.
- circuit element layer 10a of the display panel 10 according to another embodiment will be described.
- the active layers 126 and 146 in which the first and second transistors 120 and 140 of the circuit element layer 10a each include a channel region are gate electrodes. It has been shown to have a structure formed on top of (121, 141). However, the present invention is not limited thereto, and the first and second transistors 120 and 140 have different structures, for example, the active layers 126 and 146 are formed below the gate electrodes 121 and 141 or further include other conductive layers. You may.
- FIG. 10 is a cross-sectional view of an ash element layer according to another embodiment.
- the first transistor 120 and the second transistor 140 are formed on the active layers 126 and 146 in which the gate electrodes 121 and 141 include a channel region. That is, the first and second transistors 120 and 140 may have a top-gate structure.
- the first active layer 126 and the second active layer 146 are disposed on the buffer layer 110.
- the first active layer 126 and the second active layer 146 may include first conductor regions 126a and 146a, second conductor regions 126b and 146b, and channel regions 126c and 146c, respectively. .
- the channel regions 126c and 146c may be disposed between the first conductor regions 126a and 146a and the second conductor regions 126b and 146b.
- the first and second active layers 126 and 146 may be oxide semiconductors.
- the first gate insulating layer 130 is disposed on the first active layer 126 and the second active layer 146.
- the first and second gate electrodes 121 and 141 are disposed on the first gate insulating layer 130.
- the first active layer 126 overlaps the first gate electrode 121 with the first gate insulating layer 130 interposed therebetween, and the first channel region 126c is formed in the overlapped region.
- the second active layer 146 overlaps the second gate electrode 141 with the first gate insulating layer 130 formed thereon, and the second channel region 146c is formed in the overlapped region.
- the drawings illustrate that the first gate insulating layer 130 is disposed only between the first and second gate electrodes 121 and 141 and the first and second active layers 126 and 146, but is not limited thereto. That is, the first gate insulating layer 130 may include the first and second active layers 126 and 146 as shown in FIG. 6 to be disposed on the buffer layer 110 entirely.
- the interlayer insulating layer 132 is disposed on the first and second gate electrodes 121 and 141 and is disposed to cover the first and second active layers 126 and 146 and the buffer layer 110 entirely.
- a first contact hole (CNT1) that penetrates the interlayer insulating layer 132 and penetrates the interlayer insulating layer 132 to expose a portion of the upper surface of the first active layer 126, and exposes another portion of the upper surface of the first active layer 126.
- the second contact hole CNT2 is formed.
- the interlayer insulating layer 132 penetrates the interlayer insulating layer 132 to expose a part of the upper surface of the second active layer 146, a third contact hole CNT3, and another portion of the upper surface of the second active layer 146.
- the fourth contact hole CNT4 is formed.
- the region exposed by the first contact hole CNT1 is the first conductor region 126a of the first active layer 126
- the second contact hole CNT2 is the second conductor region of the first active layer 126 ( 126b)
- the third contact hole (CNT3) is the first conductor region 146a of the second active layer 146
- the fourth contact hole (CNT4) is the second conductor region of the second active layer 146 ( 146b).
- the first source/drain electrodes 123 and 124 and the second source/drain electrodes 143 and 144 are disposed on the interlayer insulating layer 132, respectively.
- the first source electrode 123 contacts the first conductive region 126a formed on one side of the first active layer 126 through the first contact hole CNT1.
- the first drain electrode 124 is in contact with the second conductor region 126b formed on the other side of the first active layer 126 through the second contact hole CNT2.
- the second source electrode 143 contacts the first conductor region 146a formed on one side of the second active layer 146 through the third contact hole CNT3.
- the second drain electrode 144 contacts the second conductor region 146b formed on the other side of the second active layer 146 through the fourth contact hole CNT4.
- the first transistor 120 and the second transistor 140 have gate electrodes 121 and 141 formed on top of the active layers 126 and 146, and the active layers 126 and 146 form an oxide semiconductor. Including channel regions 126c and 146c may be formed.
- descriptions of other members are the same as described above, and thus will be omitted.
- FIG. 11 is a cross-sectional view of an ash element layer according to another embodiment.
- the circuit element layer 10a may further include a light blocking layer 180 disposed between the substrate 100 and the buffer layer 110.
- a light blocking layer 180 disposed between the substrate 100 and the buffer layer 110.
- the first transistor 120 is illustrated in FIG. 11 as one transistor, the same may be applied to the second transistor 140.
- the light blocking layer 180 may be disposed on at least one of the substrate 100.
- the light blocking layer 180 is disposed between the substrate 100 and the buffer layer 110 and may function to block light incident on the first active layer 126 from the substrate 100.
- the light blocking layer 180 is disposed to overlap the first active layer 126 disposed on the buffer layer 110, and for example, the light blocking layer 180 has a light blocking layer 180 to cover the first active layer 126
- the area of the disposed region may be larger than the area of the first active layer 126.
- the light blocking layer 180 may include a material that absorbs incident light or blocks transmission.
- the light shielding layer 180 may be formed of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu). It may be formed of a single layer or multiple layers of one or alloys thereof.
- first transistor 120 and the second transistor 140 may be formed to have different structures, or may be disposed on different layers.
- FIG. 12 is a cross-sectional view of a circuit element layer according to another embodiment.
- a plurality of interlayer insulating films 132a and 132b are disposed on the first active layer 126 of the first transistor 120, and the second transistor (
- the second gate electrode 141 of 140 is disposed between the interlayer insulating films 132a and 132b.
- the interlayer insulating films 132a and 132b include a first interlayer insulating film 132a and a second interlayer insulating film 132b, which may be sequentially disposed on the first active layer 126.
- the second gate electrode 141 is disposed on the first interlayer insulating film 132a, and the second active layer 146 is disposed on the second interlayer insulating film 132b.
- the first transistor 120 has a structure in which the first gate electrode 121 is formed on the first active layer 126 and may have a shape substantially the same as the first transistor 120 of FIG. 10.
- the first contact hole CNT1 and the second contact hole CNT2 exposing the first conductor region 126a and the second conductor region 126b are first and second. It is the same except that it passes through the two interlayer insulating films 132a and 132b.
- the first active layer 126 of the first transistor 120 may include other semiconductor materials in addition to the oxide semiconductor.
- the first active layer 126 may include polycrystalline silicon.
- Polycrystalline silicon can be formed by crystallizing amorphous silicon. Examples of the crystallization method include rapid thermal annealing (RTA) method, solid phase crystallzation (SPC) method, excimer laser annealing (ELA) method, metal induced crystallzation (MIC) method, metal induced lateral crystallzation (MILC) method, and SLS (sequential) lateral solidification), and the like, but is not limited thereto.
- the first active layer 126 may include monocrystalline silicon, low temperature polycrystalline silicon, amorphous silicon, or the like. However, it is not limited thereto.
- the second transistor 140 includes a second gate electrode 141 disposed on the first interlayer insulating film 132a, a second active layer 146 disposed on the second interlayer insulating film 132b, and a second source/drain electrode. (143, 144).
- a data line 191 to which the data signal DATA is applied and a conductive pattern 193 connecting the data line 191 and the second source electrode 143 may also be disposed on the second interlayer insulating layer 132b.
- the first active layer 126 and the second active layer 146, the first gate electrode 121 and the second gate electrode 141 may be disposed on different layers, respectively.
- the first active layer 126 and the second active layer 146 including a semiconductor may constitute a lower semiconductor layer and an upper semiconductor layer in the circuit element layer 10a.
- the first transistor 120 and the second transistor 140 may be formed of different types of transistors.
- the first and second transistors 120 and 140 are respectively described as being formed of a P type MOSFET (Metal Oxide Semiconductor Field Effect Transistor), but at least one of them may be formed of an N type MOSFET.
- one of the first and second transistors 120 and 140 is a P-type MOSFET, and the other may be formed of an N-type MOSFET. Detailed description of other members will be omitted.
- the light emitting device 300 may emit light of a specific wavelength band including semiconductor crystals.
- the light emitting device 300 may emit light toward the upper portion of the display device layer 10b.
- FIG. 13 is a schematic diagram of a light emitting device according to an embodiment.
- the light emitting device 300 may be a light emitting diode, and specifically, the light emitting device 300 has a size of a micrometer or a nanometer, and is an inorganic material. It may be a light emitting diode. Inorganic light emitting diodes can be aligned between the two electrodes where polarity is formed by forming an electric field in a specific direction between the two electrodes facing each other. The light emitting device 300 may be aligned between electrodes by an electric field formed on two electrodes.
- the light emitting device 300 may include semiconductor crystals doped with any conductivity type (eg, p-type or n-type) impurities.
- the semiconductor crystal may receive an electric signal applied from an external power source and emit it as light in a specific wavelength band.
- the light emitting device 300 may include a first conductivity type semiconductor 310, a second conductivity type semiconductor 320, an active material layer 330, and an insulating layer 380. have. Further, the light emitting device 300 according to an embodiment may further include at least one conductive electrode layer 370. 13 illustrates that the light emitting device 300 further includes one conductive electrode layer 370, but is not limited thereto. In some cases, the light emitting device 300 may include a larger number of conductive electrode layers 370 or may be omitted. The description of the light emitting device 300 to be described later may be equally applied even if the number of conductive electrode layers 370 is different or further includes other structures.
- the light emitting device 300 may have a shape extending in one direction.
- the light emitting device 300 may have a shape of a nano rod, nano wire, or nano tube.
- the light emitting device 300 may be cylindrical or rod.
- the shape of the light emitting device 300 is not limited thereto, and may have various shapes such as a regular cube, a rectangular parallelepiped, and a hexagonal columnar shape.
- the plurality of semiconductors included in the light emitting device 300 described below may have a structure sequentially arranged or stacked along the one direction.
- the light emitting device 300 may emit light of a specific wavelength band.
- the light emitted from the active material layer 330 may emit blue light having a center wavelength range of 450 nm to 495 nm.
- the central wavelength band of blue light is not limited to the above-described range, and includes all wavelength ranges that can be recognized as blue in the art.
- light emitted from the active material layer 330 of the light emitting device 300 is not limited thereto, and green light having a center wavelength band of 495 nm to 570 nm or green wavelength having a center wavelength band of 620 nm to 750 nm It may be a red (Red) light having a.
- the first conductivity type semiconductor 310 may be, for example, an n-type semiconductor having a first conductivity type.
- the first conductivity-type semiconductor 310 is In x Al y Ga 1-xy N (0 ⁇ x ⁇ 1,0 ⁇ y ⁇ 1, 0 It may include a semiconductor material having a formula of ⁇ x+y ⁇ 1).
- it may be any one or more of InAlGaN, GaN, AlGaN, InGaN, AlN, and InN doped with n-type.
- the first conductive semiconductor 310 ′ may be doped with a first conductive dopant, for example, the first conductive dopant may be Si, Ge, Sn, or the like.
- the first conductivity-type semiconductor 310 may be n-GaN doped with n-type Si.
- the length of the first conductivity type semiconductor 310 may have a range of 1.5 ⁇ m to 5 ⁇ m, but is not limited thereto.
- the second conductivity type semiconductor 320 is disposed on the active material layer 330 to be described later.
- the second conductivity-type semiconductor 320 may be a p-type semiconductor having a second conductivity type, for example, when the light emitting device 300 emits light in a blue or green wavelength band, the second conductivity-type semiconductor 320 ) May include a semiconductor material having the formula In x Al y Ga 1-xy N (0 ⁇ x ⁇ 1,0 ⁇ y ⁇ 1, 0 ⁇ x+y ⁇ 1). For example, it may be any one or more of InAlGaN, GaN, AlGaNN, InGaN, AlN, and InN doped with p-type.
- the second conductive semiconductor 320 may be doped with a second conductive dopant, for example, the second conductive dopant may be Mg, Zn, Ca, Se, Ba, or the like.
- the second conductivity-type semiconductor 320 may be p-GaN doped with p-type Mg.
- the length of the second conductivity type semiconductor 320 may have a range of 0.08 ⁇ m to 0.25 ⁇ m, but is not limited thereto.
- the drawing shows that the first conductivity type semiconductor 310 and the second conductivity type semiconductor 320 are configured as one layer, but is not limited thereto.
- the first conductivity type semiconductor 310 and the second conductivity type semiconductor 320 may have a larger number of layers, such as a clad layer or TSBR (Tensile strain). barrier reducing) layer.
- the active material layer 330 is disposed between the first conductivity type semiconductor 310 and the second conductivity type semiconductor 320.
- the active material layer 330 may include a single or multiple quantum well structure material.
- a quantum layer and a well layer may be alternately stacked in a plurality.
- the active material layer 330 may emit light by a combination of electron-hole pairs according to electric signals applied through the first conductivity type semiconductor 310 and the second conductivity type semiconductor 320.
- the active material layer 330 may include a material such as AlGaN, AlInGaN.
- the active material layer 330 when the active material layer 330 is a structure in which quantum layers and well layers are alternately stacked in a multi-quantum well structure, the quantum layer may include a material such as AlGaN or AlInGaN, and the well layer is GaN or AlInN. .
- the active material layer 330 includes AlGaInN as a quantum layer and AlInN as a well layer, and the active material layer 330 has a blue center wavelength range of 450 nm to 495 nm. (Blue) It can emit light.
- the active material layer 330 may have a structure in which a semiconductor material having a large band gap energy and a semiconductor material having a small band gap energy are alternately stacked, and emit light. Other group 3 to 5 semiconductor materials may be included according to the wavelength band of light.
- the light emitted by the active material layer 330 is not limited to light in the blue wavelength band, and may emit light in the red and green wavelength bands in some cases.
- the length of the active material layer 330 may have a range of 0.05 ⁇ m to 0.25 ⁇ m, but is not limited thereto.
- the light emitted from the active material layer 330 may be emitted on both sides as well as the longitudinal outer surface of the light emitting device 300.
- the light emitted from the active material layer 330 is not limited in direction in one direction.
- the conductive 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 conductive electrode layer 370 may include a conductive metal.
- the conductive electrode layer 370 includes aluminum (Al), titanium (Ti), indium (In), gold (Au), silver (Ag), indium tin oxide (ITO), indium zinc oxide (IZO), and ITZO (Indium Tin-Zinc Oxide).
- the conductive electrode layer 370 may include a semiconductor material doped with n-type or p-type.
- the conductive 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 plurality of semiconductors described above.
- the insulating layer 380 is disposed to surround at least the outer surface of the active material layer 330, and the light emitting device 300 may extend in one extended direction.
- the insulating layer 380 may function to protect the members.
- the insulating layer 380 is 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 film 380 is formed to extend in the longitudinal direction of the light emitting device 300 to cover the first conductive semiconductor 310 to the conductive electrode layer 370, but is not limited thereto.
- the insulating layer 380 may cover only the outer surfaces of some conductive semiconductors including the active material layer 330, or may cover only a portion of the outer surfaces of the conductive electrode layers 370 to expose some outer surfaces of the conductive electrode layers 370.
- the thickness of the insulating film 380 may have a range of 10nm to 1.0 ⁇ m, but is not limited thereto. Preferably, the thickness of the insulating film 380 may be 40 nm.
- the insulating film 380 includes materials having insulating properties, for example, silicon oxide (SiO x ), silicon nitride (SiN x ), silicon oxynitride (SiO x N y ), aluminum nitride (Aluminum) nitride, AlN), and aluminum oxide (Al 2 O 3 ). Accordingly, it is possible to prevent an electrical short circuit that may occur when the active material layer 330 directly contacts an electrode through which an electrical signal is transmitted to the light emitting device 300. In addition, since the insulating layer 380 protects the outer surface of the light emitting device 300 including the active material 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 aligned by spraying on the electrode in a dispersed state in a predetermined ink.
- the surface of the insulating layer 380 may be hydrophobic or hydrophilic in order to maintain the dispersed state of the light emitting device 300 without aggregation with other light emitting devices 300 adjacent in the ink.
- the light emitting device 300 may have a length (h) of 1 ⁇ m to 10 ⁇ m or 2 ⁇ m to 5 ⁇ m, and preferably have a length of about 4 ⁇ m or more.
- the diameter of the light emitting device 300 has a range of 300nm to 700nm
- the aspect ratio (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 included in the display panel 10 may have different diameters according to a difference in composition of the active material layer 330.
- the diameter of the light emitting device 300 may have a range of about 500nm.
- the display panel 10 may further include a light emitting device 300 having a different structure from the light emitting device 300 of FIG. 13.
- FIG. 14 is a schematic diagram of a light emitting device according to another embodiment.
- each layer may be formed to surround the outer surface of any other layer.
- the light emitting device 300 ′ of FIG. 14 is the same as the light emitting device 300 of FIG. 13, except that the shape of each layer is partially different.
- the same contents will be omitted and differences will be described.
- the first conductivity type semiconductor 310 ′ may extend in one direction and both ends may be formed to be inclined toward the center.
- the first conductivity-type semiconductor 310 ′ of FIG. 14 may have a rod-shaped or cylindrical body portion, and conical ends formed on upper and lower portions of the body portion, respectively.
- the upper end of the main body may have a steeper slope than the lower end.
- the active material layer 330' is disposed to surround the outer surface of the body portion of the first conductivity-type semiconductor 310'.
- the active material layer 330 ′ may have an annular shape extending in one direction.
- the active material layer 330' is not formed on the upper and lower portions of the first conductivity-type semiconductor 310'. That is, the active material layer 330' may contact only the parallel side surface of the first conductivity type semiconductor 310'.
- the second conductivity type semiconductor 320 ′ is disposed to surround the outer surface of the active material layer 330 ′ and the upper end of the first conductivity type semiconductor 310 ′.
- the second conductivity-type semiconductor 320 ′ may include an annular body portion extending in one direction and an upper portion formed such that the side surface is inclined. That is, the second conductivity type semiconductor 320 ′ may directly contact the parallel side surface of the active material layer 330 ′ and the inclined upper portion of the first conductivity type semiconductor 310 ′. However, the second conductivity type semiconductor 320 ′ is not formed on the lower end of the first conductivity type semiconductor 310 ′.
- the electrode material layer 370' is disposed to surround the outer surface of the second conductivity-type semiconductor 320'. That is, the shape of the electrode material layer 370' may be substantially the same as the second conductivity type semiconductor 320'. That is, the electrode material layer 370' may be in full contact with the outer surface of the second conductivity-type semiconductor 320'.
- the insulating layer 380 ′ may be disposed to surround the outer surfaces of the electrode material layer 370 ′ and the first conductivity type semiconductor 310 ′.
- the insulating layer 380 ′ includes an electrode material layer 370 ′, a lower end portion of the first conductivity type semiconductor 310 ′, and an exposed lower portion of the active material layer 330 ′ and the second conductivity type semiconductor 320 ′. You can make direct contact with.
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Abstract
Description
Claims (20)
- 발광 소자;상기 발광 소자에 구동 전류를 전달하는 제1 트랜지스터;상기 제1 트랜지스터에 데이터 신호를 전달하는 제2 트랜지스터를 포함하고,상기 제1 트랜지스터는 제1 활성층을 포함하고,상기 제2 트랜지스터는 산화물 반도체를 포함하는 제2 활성층을 포함하며,상기 발광 소자는 제1 극성을 갖는 제1 도전형 반도체; 상기 제1 극성과 다른 제2 극성을 갖는 제2 도전형 반도체 및 상기 제1 도전형 반도체와 상기 제2 도전형 반도체 사이에 배치된 활성물질층을 포함하는 표시 장치.
- 제1 항에 있어서,상기 제1 트랜지스터의 상기 제1 활성층은 산화물 반도체를 포함하는 표시 장치.
- 제2 항에 있어서,상기 산화물 반도체는 인듐-갈륨-주석 산화물(Indium-Galium-Tin Oxide; IGTO) 또는 인듐-갈륨-아연-주석 산화물(Indium-Galium-Zinc-Tin Oxide; IGZTO)을 포함하는 표시 장치.
- 제3 항에 있어서,상기 발광 소자는 일 방향으로 연장된 길이가 4㎛ 내지 7㎛ 의 범위를 갖고, 종횡비가 1.2 내지 100의 범위를 갖는 표시 장치.
- 제2 항에 있어서,상기 제1 트랜지스터는 상기 제1 활성층의 하부에 배치된 제1 게이트 전극을 포함하는 표시 장치.
- 제1 항에 있어서,상기 제1 활성층은 제1 도체화 영역, 제2 도체화 영역 및 상기 제1 도체화 영역과 상기 제2 도체화 영역 사이에 배치된 채널 영역을 포함하는 표시 장치.
- 제6 항에 있어서,상기 제1 트랜지스터는 상기 제1 활성층 상에 배치된 제3 게이트 전극;상기 제3 게이트 전극 상에 배치된 층간 절연막을 관통하는 제1 컨택홀을 통해 상기 제1 도체화 영역에 접속되는 제1 소스 전극; 및상기 층간 절연막을 관통하는 제2 컨택홀을 통해 상기 제2 도체화 영역에 접속되는 제1 드레인 전극을 더 포함하는 표시 장치.
- 제7 항에 있어서,상기 제1 활성층은 다결정 실리콘을 포함하는 표시 장치.
- 제8 항에 있어서,상기 제1 트랜지스터는 상기 제1 활성층 아래에 배치되는 차광층을 더 포함하는 표시 장치.
- 제1 항에 있어서,상기 제2 트랜지스터는 상기 제2 활성층 하부에 배치된 제2 게이트 전극;상기 제2 활성층의 일 측에 접속된 제2 소스 전극; 및상기 제2 활성층의 타 측에 접속된 제2 드레인 전극을 더 포함하는 표시 장치.
- 제10 항에 있어서,상기 데이터 신호를 전달하는 데이터 라인을 더 포함하고, 상기 데이터 라인은 상기 제2 트랜지스터의 상기 제2 소스 전극과 이격되어 배치되고, 상기 데이터 라인과 상기 제2 소스 전극에 접속하는 도전 패턴을 더 포함하는 표시 장치.
- 기판;상기 기판 상에 배치된 제1 게이트 전극;상기 제1 게이트 전극 상에 배치된 제1 게이트 절연막;상기 제1 게이트 절연막 상에 배치되고, 상기 제1 게이트 전극과 부분적으로 중첩하며 산화물 반도체를 포함하는 제1 활성층;상기 제1 활성층 상에 배치된 제1 층간 절연막;상기 제1 층간 절연막 상에 배치된 제2 게이트 전극;상기 제2 게이트 전극 상에 배치된 제2 층간 절연막;상기 제2 층간 절연막 상에 배치되고 상기 제2 게이트 전극과 부분적으로 중첩하며 산화물 반도체를 포함하는 제2 활성층; 및상기 제2 층간 절연막 상에 배치되는 제1 신호 라인 및 상기 제2 활성층의 일 측 상에 형성된 소스 전극을 포함하는 제1 도전층을 포함하되,상기 제1 도전층은 상기 소스 전극의 일 측 및 상기 제1 신호 라인과 부분적으로 중첩하는 도전 패턴을 더 포함하는 표시 장치.
- 제12 항에 있어서,상기 제1 게이트 절연막 상에 배치되고 상기 제1 활성층의 일 측과 접촉하는 드레인 전극;상기 제1 도전층 상에 배치된 비아층; 및상기 비아층 상에 배치된 적어도 하나의 발광 소자를 더 포함하고, 상기 드레인 전극은 상기 발광 소자의 일 단과 전기적으로 연결된 표시 장치.
- 제13 항에 있어서,상기 발광 소자는 제1 극성을 갖는 제1 도전형 반도체; 상기 제1 극성과 다른 제2 극성을 갖는 제2 도전형 반도체 및 상기 제1 도전형 반도체와 상기 제2 도전형 반도체 사이에 배치된 활성물질층을 포함하는 표시 장치.
- 베이스층;상기 베이스층 상에 제1 방향으로 이격된 제1 전극 및 제2 전극;상기 제1 전극 및 상기 제2 전극 중 적어도 어느 하나에 연결되고 상기 제1 방향으로 연장된 형상을 갖는 적어도 하나의 발광 소자;상기 발광 소자에 구동 전류를 전달하는 구동 트랜지스터를 포함하고,상기 구동 트랜지스터는 산화물 반도체를 갖는 활성층을 포함하며,상기 발광 소자는 제1 극성을 갖는 제1 도전형 반도체; 상기 제1 극성과 다른 제2 극성을 갖는 제2 도전형 반도체 및 상기 제1 도전형 반도체와 상기 제2 도전형 반도체 사이에 배치된 활성물질층을 포함하는 표시 장치.
- 제15 항에 있어서,상기 구동 트랜지스터는 게이트 전극이 상기 활성층의 하부에 배치된 표시 장치.
- 제16 항에 있어서,상기 제1 전극 및 상기 제2 전극은 상기 베이스층 상에서 상기 제1 방향과 다른 제2 방향으로 연장된 형상을 갖는 표시 장치.
- 제17 항에 있어서,상기 제1 전극과 상기 발광 소자의 일 단부에 접촉하는 제1 접촉 전극 및 상기 제2 전극과 상기 발광 소자의 타 단부에 접촉하는 제2 접촉 전극을 더 포함하는 표시 장치.
- 제17 항에 있어서,상기 발광 소자는 상기 제1 방향으로 연장된 길이가 4㎛ 내지 7㎛ 의 범위를 갖고, 종횡비가 1.2 내지 100의 범위를 갖는 표시 장치.
- 제19 항에 있어서,상기 제1 도전형 반도체, 상기 활성물질층 및 상기 제2 도전형 반도체는 상기 베이스층의 상면과 평행한 방향으로 배치된 표시 장치.
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| CN201980089216.0A CN113383419B (zh) | 2019-01-15 | 2019-11-25 | 显示设备 |
| EP19909925.0A EP3913672B1 (en) | 2019-01-15 | 2019-11-25 | Display device |
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| KR10-2019-0005433 | 2019-01-15 |
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| PCT/KR2019/016252 Ceased WO2020149517A1 (ko) | 2019-01-15 | 2019-11-25 | 표시 장치 |
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| US (1) | US20220102331A1 (ko) |
| EP (1) | EP3913672B1 (ko) |
| KR (1) | KR102602527B1 (ko) |
| CN (1) | CN113383419B (ko) |
| WO (1) | WO2020149517A1 (ko) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3993033A3 (en) * | 2020-10-12 | 2022-07-13 | Samsung Display Co., Ltd. | Display device and method of fabricating the same |
| US20220406972A1 (en) * | 2019-11-13 | 2022-12-22 | Samsung Display Co., Ltd. | Display device and method for manufacturing display device |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102828397B1 (ko) * | 2020-02-19 | 2025-07-02 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR102873945B1 (ko) * | 2020-11-05 | 2025-10-20 | 엘지디스플레이 주식회사 | 전계발광 표시장치 |
| KR20220067649A (ko) | 2020-11-17 | 2022-05-25 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR20220091704A (ko) | 2020-12-23 | 2022-07-01 | 삼성디스플레이 주식회사 | 표시 장치 및 그 제조 방법 |
| KR102940611B1 (ko) | 2020-12-30 | 2026-03-18 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR20220097711A (ko) | 2020-12-30 | 2022-07-08 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR102882361B1 (ko) * | 2021-03-10 | 2025-11-06 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR102837634B1 (ko) | 2021-03-17 | 2025-07-23 | 삼성디스플레이 주식회사 | 표시 장치 및 이의 제조 방법 |
| KR20220131453A (ko) | 2021-03-19 | 2022-09-28 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR102878962B1 (ko) * | 2021-06-16 | 2025-10-30 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR102843398B1 (ko) | 2021-07-08 | 2025-08-08 | 삼성디스플레이 주식회사 | 표시 장치 및 그 제조 방법 |
| KR102881003B1 (ko) * | 2021-07-28 | 2025-11-04 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR20230126288A (ko) * | 2022-02-22 | 2023-08-30 | 삼성디스플레이 주식회사 | 표시 장치 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120138805A (ko) * | 2010-03-12 | 2012-12-26 | 샤프 가부시키가이샤 | 발광 장치의 제조 방법, 발광 장치, 조명 장치, 백라이트, 액정 패널, 표시 장치, 표시 장치의 제조 방법, 표시 장치의 구동 방법 및 액정 표시 장치 |
| KR20150086188A (ko) * | 2014-01-17 | 2015-07-27 | 가부시키가이샤 재팬 디스프레이 | 발광 소자 표시 장치 |
| KR20160150199A (ko) * | 2015-06-19 | 2016-12-29 | 엘지디스플레이 주식회사 | 박막 트랜지스터 기판 및 이를 이용한 표시장치 |
| KR20180007025A (ko) * | 2016-07-11 | 2018-01-22 | 삼성디스플레이 주식회사 | 초소형 발광 소자를 포함하는 픽셀 구조체, 표시장치 및 그 제조방법 |
| KR20180007376A (ko) * | 2016-07-12 | 2018-01-23 | 삼성디스플레이 주식회사 | 표시장치 및 표시장치의 제조방법 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203085533U (zh) * | 2012-10-26 | 2013-07-24 | 京东方科技集团股份有限公司 | 阵列基板和显示装置 |
| KR101627365B1 (ko) * | 2015-11-17 | 2016-06-08 | 피에스아이 주식회사 | 편광을 출사하는 초소형 led 전극어셈블리, 이의 제조방법 및 이를 포함하는 led 편광램프 |
| KR102587215B1 (ko) * | 2016-12-21 | 2023-10-12 | 삼성디스플레이 주식회사 | 발광 장치 및 이를 구비한 표시 장치 |
| CN117355134A (zh) * | 2017-01-27 | 2024-01-05 | 株式会社半导体能源研究所 | 电容器、半导体装置及半导体装置的制造方法 |
| TWI667796B (zh) * | 2017-05-31 | 2019-08-01 | Lg Display Co., Ltd. | 薄膜電晶體、包含該薄膜電晶體的閘極驅動器、及包含該閘極驅動器的顯示裝置 |
-
2019
- 2019-01-15 KR KR1020190005433A patent/KR102602527B1/ko active Active
- 2019-11-25 US US17/423,321 patent/US20220102331A1/en active Pending
- 2019-11-25 CN CN201980089216.0A patent/CN113383419B/zh active Active
- 2019-11-25 EP EP19909925.0A patent/EP3913672B1/en active Active
- 2019-11-25 WO PCT/KR2019/016252 patent/WO2020149517A1/ko not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120138805A (ko) * | 2010-03-12 | 2012-12-26 | 샤프 가부시키가이샤 | 발광 장치의 제조 방법, 발광 장치, 조명 장치, 백라이트, 액정 패널, 표시 장치, 표시 장치의 제조 방법, 표시 장치의 구동 방법 및 액정 표시 장치 |
| KR20150086188A (ko) * | 2014-01-17 | 2015-07-27 | 가부시키가이샤 재팬 디스프레이 | 발광 소자 표시 장치 |
| KR20160150199A (ko) * | 2015-06-19 | 2016-12-29 | 엘지디스플레이 주식회사 | 박막 트랜지스터 기판 및 이를 이용한 표시장치 |
| KR20180007025A (ko) * | 2016-07-11 | 2018-01-22 | 삼성디스플레이 주식회사 | 초소형 발광 소자를 포함하는 픽셀 구조체, 표시장치 및 그 제조방법 |
| KR20180007376A (ko) * | 2016-07-12 | 2018-01-23 | 삼성디스플레이 주식회사 | 표시장치 및 표시장치의 제조방법 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3913672A4 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220406972A1 (en) * | 2019-11-13 | 2022-12-22 | Samsung Display Co., Ltd. | Display device and method for manufacturing display device |
| EP3993033A3 (en) * | 2020-10-12 | 2022-07-13 | Samsung Display Co., Ltd. | Display device and method of fabricating the same |
| US11894355B2 (en) | 2020-10-12 | 2024-02-06 | Samsung Display Co., Ltd. | Display device and method of fabricating the same |
| US12125836B2 (en) | 2020-10-12 | 2024-10-22 | Samsung Display Co., Ltd. | Display device and method of fabricating the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102602527B1 (ko) | 2023-11-15 |
| US20220102331A1 (en) | 2022-03-31 |
| EP3913672B1 (en) | 2025-07-02 |
| EP3913672A1 (en) | 2021-11-24 |
| CN113383419A (zh) | 2021-09-10 |
| CN113383419B (zh) | 2025-05-30 |
| EP3913672A4 (en) | 2022-10-19 |
| KR20200088951A (ko) | 2020-07-24 |
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