WO2023239154A1 - 표시 장치 - Google Patents
표시 장치 Download PDFInfo
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- WO2023239154A1 WO2023239154A1 PCT/KR2023/007767 KR2023007767W WO2023239154A1 WO 2023239154 A1 WO2023239154 A1 WO 2023239154A1 KR 2023007767 W KR2023007767 W KR 2023007767W WO 2023239154 A1 WO2023239154 A1 WO 2023239154A1
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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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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/441—Interconnections, e.g. scanning lines
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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
- H10D86/451—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 characterised by the compositions or shapes of the interlayer dielectrics
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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
- H10D86/481—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 integrated with passive devices, e.g. auxiliary capacitors
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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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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/83—Electrodes
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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
- H10H20/83—Electrodes
- H10H20/831—Electrodes characterised by their shape
- H10H20/8312—Electrodes characterised by their shape extending at least partially through the bodies
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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
- H10H20/851—Wavelength conversion means
- H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
- H10H20/8512—Wavelength conversion materials
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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
- H10H20/851—Wavelength conversion means
- H10H20/8514—Wavelength conversion means characterised by their shape, e.g. plate or foil
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
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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
- H10H20/851—Wavelength conversion means
- H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
- H10H20/8512—Wavelength conversion materials
- H10H20/8513—Wavelength conversion materials having two or more wavelength conversion materials
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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
Definitions
- the present invention relates to a display device.
- the purpose of the present invention is to provide a display device that can improve display quality.
- a display device includes sub-pixels.
- the sub-pixel includes a first transistor including a gate electrode connected to a first node, a first terminal electrically connected to a first power line, and a second terminal electrically connected to a second node; a light emitting unit electrically connected between the second node and a second power line and including at least one light emitting element; and a capacitor formed between the first node and the second node.
- the capacitor includes a first capacitor electrode; and a second capacitor electrode that overlaps the first capacitor electrode in a plan view.
- An insulating layer is disposed between the first capacitor electrode and the second capacitor electrode.
- the second capacitor electrode includes: a first protrusion protruding in a direction extending beyond an edge of the first capacitor electrode in a plan view to receive a data signal; and a second protrusion that protrudes in a direction opposite to the extension direction than a portion of an edge of the second capacitor electrode in a plan view.
- the second capacitor electrode excluding the first and second protrusions may be covered by the first capacitor electrode.
- the second protrusion may not be directly connected to an external component.
- a first width of the first protrusion and a second width of the second protrusion may be the same.
- the overlap area between the first capacitor electrode and the second capacitor electrode in the plan view is the second protrusion corresponding to the first protrusion. It can be kept constant by
- the first protrusion and the second protrusion may not be on the same line.
- the first protrusion and the second protrusion may be on the same line.
- the second capacitor electrode may further include a body portion that overlaps the first capacitor electrode in a plan view.
- the width of the main body portion may be greater than the width of the second protrusion in a direction parallel to the extension direction.
- the second protrusion may protrude by about 3 ⁇ m from the main body in the opposite direction.
- the first capacitor electrode may be disposed below the semiconductor pattern of the first transistor in a cross-sectional view.
- a first insulating layer may be disposed between the first capacitor electrode and the semiconductor pattern.
- the second capacitor electrode may be disposed on top of the semiconductor pattern in a cross-sectional view.
- a second insulating layer may be disposed between the second capacitor electrode and the semiconductor pattern.
- the capacitor may further include a third capacitor electrode that overlaps the second capacitor electrode in a plan view.
- a third insulating layer may be disposed between the second capacitor electrode and the third capacitor electrode.
- the third capacitor electrode may be electrically connected to the first capacitor electrode through a contact hole penetrating the first, second, and third insulating layers.
- the second capacitor electrode may be disposed on top of the semiconductor pattern of the first transistor.
- the first capacitor electrode may be disposed on top of the second capacitor electrode.
- An insulating layer may be disposed between the first capacitor electrode and the second capacitor electrode.
- the sub-pixel may further include a second transistor electrically connected between a data line and the first node.
- the first protrusion may protrude toward the second transistor.
- the data line may extend in the extension direction.
- the data line may extend in a direction intersecting the extension direction.
- the light emitting unit includes first and second electrodes spaced apart from each other; a first pixel electrode disposed on the first electrode and electrically connected to one end of the at least one light emitting element; and a second pixel electrode disposed on the second electrode and electrically connected to the other end of the at least one light emitting element.
- the at least one light emitting element may be disposed between the first electrode and the second electrode.
- the first pixel electrode may be electrically connected to the second terminal of the first transistor through a contact hole penetrating an insulating layer disposed below the first and second electrodes.
- the sub-pixel is disposed on the light-emitting device and may further include a color conversion layer that converts and emits a wavelength of light incident from the at least one light-emitting device.
- the first power line may include a first vertical power line extending in a first direction and a second vertical power line extending in a second direction.
- Pixel circuits of a plurality of sub-pixels constituting one pixel may be disposed in the first vertical power line, the second vertical power line, and an area partitioned by the second power line.
- Each of the pixel circuits may include the first transistor and the capacitor.
- the pixel circuits may be arranged along the first direction, and data lines for the sub-pixels may extend in the first direction and be arranged adjacent to each other.
- the second capacitor electrode of the storage capacitor includes a first protrusion and a second protrusion protruding from the first capacitor electrode, and the second protrusion is opposite to the extension direction of the first protrusion. It can protrude in any direction. Even if an alignment error occurs between the first capacitor electrode and the second capacitor electrode, the capacity of the storage capacitor is maintained constant by the second protrusion corresponding to the first protrusion, and the capacity deviation of the storage capacitor between sub-pixels and the resulting display are displayed. Deterioration in quality can be prevented.
- FIG. 1 is a perspective view showing a light-emitting device according to an embodiment.
- Figure 2 is a schematic cross-sectional view showing a light-emitting device according to an embodiment.
- Figure 3 is a plan view showing a display device according to an embodiment.
- FIG. 4A is a schematic diagram illustrating an example of an equivalent circuit of a pixel included in the display device of FIG. 3 .
- FIG. 4B is a schematic diagram illustrating an example of an equivalent circuit of a pixel included in the display device of FIG. 3 .
- FIG. 4C is a schematic diagram illustrating an example of an equivalent circuit of a pixel included in the display device of FIG. 3.
- FIG. 5 is a schematic waveform diagram explaining the operation of the pixel of FIG. 4A.
- FIG. 6 is a schematic cross-sectional view showing an example of a sub-pixel in the display device of FIG. 3.
- FIG. 7A is a schematic cross-sectional view showing an example of a sub-pixel in the display device of FIG. 3.
- FIG. 7B is a schematic cross-sectional view showing an example of a sub-pixel in the display device of FIG. 3.
- FIG. 7C is a schematic cross-sectional view showing an example of a sub-pixel in the display device of FIG. 3.
- FIG. 8 is a layout diagram illustrating an example of a pixel in the display device of FIG. 3.
- FIG. 9A is an enlarged view of a third pixel circuit within the pixel of FIG. 8 according to an embodiment.
- FIG. 9B is an enlarged view of the third pixel circuit within the pixel of FIG. 8 according to one embodiment.
- FIG. 10 is a schematic cross-sectional view of an embodiment of a storage capacitor taken along line I-I' of FIG. 9A.
- FIG. 11 is a diagram showing a pixel circuit according to a comparative example.
- FIG. 12 is a schematic cross-sectional view showing a comparative example of a storage capacitor taken along line II-II' of FIG. 11.
- FIG. 13 is a plan view showing an example of a pixel in the display device of FIG. 3.
- FIG. 14 is a diagram illustrating an embodiment of a pixel circuit included in the pixel of FIG. 8.
- FIG. 15 is a diagram illustrating an embodiment of a pixel circuit included in the pixel of FIG. 8.
- first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.
- the direction in which it is formed is not limited to the upper direction and includes formation in the side or bottom direction.
- a part of a layer, membrane, region, plate, etc. is said to be “beneath” another part, this includes not only cases where it is “immediately below” another part, but also cases where there is another part in between.
- an element such as a layer
- it is either directly connected to or connected to another element or layer.
- elements or layers or intermediate elements or layers may be present.
- the term “connected” may mean a physical, electrical and/or fluid connection with or without intervening elements.
- the element when an element is referred to as being “in contact” or “in contact” with another element, the element may be in “electrical contact” or “physical contact” with the other element, or in “indirect contact”. Or it may be in “direct contact” with another element.
- the phrase "at least one of” is intended to include the meaning of “at least one selected from the group of” for its meaning and interpretation.
- “at least one of A and B” may be understood to mean “A, B, or A and B.”
- FIG. 1 is a perspective view showing a light-emitting device according to an embodiment.
- Figure 2 is a schematic cross-sectional view showing a light-emitting device according to an embodiment.
- 1 and 2 illustrate a pillar-shaped light emitting device LD, but the type and/or shape of the light emitting device LD is not limited thereto.
- the light emitting device LD may include a first semiconductor layer 11, an active layer 12, and a second semiconductor layer 13. If the extension direction of the light emitting device LD is the length (L) direction, the first semiconductor layer 11, the active layer 12, and the second semiconductor layer 13 will be sequentially stacked along the length (L) direction. You can.
- the light emitting device LD may be provided in a pillar shape extending in one direction.
- the light emitting device LD may have a first end EP1 and a second end EP2.
- One of the first and second semiconductor layers 11 and 13 may be disposed at the first end EP1 of the light emitting device LD.
- the remaining one of the first and second semiconductor layers 11 and 13 may be disposed at the second end EP2 of the light emitting device LD.
- the light emitting device LD may be a light emitting device manufactured into a pillar shape through an etching method or the like.
- the column shape refers to a rod-like shape or bar-like shape that is long in the length (L) direction (i.e., the aspect ratio is greater than 1), such as a circular column or a polygonal column. It encompasses, and the shape of its cross section is not particularly limited.
- the length (L) of the light emitting device (LD) may be larger than its diameter (D) (or width in cross section).
- the light emitting device (LD) may have a small size ranging from nanometer scale to micrometer scale.
- the light emitting device LD may each have a diameter (D) (or width) and/or length (L) ranging from nanometer scale to micrometer scale.
- D diameter
- L length
- the size of the light-emitting device (LD) is not limited to this, and the size of the light-emitting device (LD) may vary depending on the design conditions of various devices that use the light-emitting device (LD) as a light source, for example, a display device. It can be changed in various ways.
- the first semiconductor layer 11 may be a semiconductor layer of a first conductivity type.
- the first semiconductor layer 11 may include an n-type semiconductor layer.
- the first semiconductor layer 11 includes any one semiconductor material such as InAlGaN, GaN, AlGaN, InGaN, AlN, InN, and is an n-type doped with a first conductivity type dopant such as Si, Ge, Sn, etc. It may include a semiconductor layer.
- the material constituting the first semiconductor layer 11 is not limited to this.
- the first semiconductor layer 11 can be made of various materials.
- the active layer 12 is disposed on the first semiconductor layer 11 and may be formed in a single-quantum well or multi-quantum well structure.
- the active layer 12 may include GaN, InGaN, InAlGaN, AlGaN, or AlN.
- a variety of materials may constitute the active layer 12.
- a clad layer (not shown) doped with a conductive dopant may be formed on the top and/or bottom of the active layer 12.
- the clad layer may include AlGaN or InAlGaN.
- the second semiconductor layer 13 is disposed on the active layer 12 and may include a different type of semiconductor layer from the first semiconductor layer 11.
- the second semiconductor layer 13 may include a p-type semiconductor layer.
- the second semiconductor layer 13 includes at least one semiconductor material such as InAlGaN, GaN, AlGaN, InGaN, AlN, InN, and is a p-type semiconductor layer doped with a second conductivity type dopant such as Mg. may include.
- the material constituting the second semiconductor layer 13 is not limited to this. Various materials may constitute the second semiconductor layer 13.
- the light emitting device LD When a voltage higher than the threshold voltage is applied to both ends of the light emitting device LD, electron-hole pairs combine in the active layer 12 and the light emitting device LD may emit light.
- the light emitting device LD can be used as a light source for various light emitting devices, including pixels of a display device.
- the light emitting device LD may further include an insulating film 14 provided on its surface.
- the insulating film 14 may be formed on the surface of the light emitting device LD to surround at least the outer peripheral surface of the active layer 12.
- the insulating film 14 may further surround one region of the first and second semiconductor layers 11 and 13.
- the insulating film 14 may expose both ends EP1 and EP2 of the light emitting device LD having different polarities.
- the insulating film 14 may expose one end of each of the first and second semiconductor layers 11 and 13 located at the first and second ends EP1 and EP2 of the light emitting device LD.
- the insulating film 14 is formed on the sides of the first and second semiconductor layers 11 and 13 adjacent to the first and second ends EP1 and EP2 of the light emitting device LD having different polarities. may be exposed.
- the insulating film 14 may be formed of silicon oxide (SiO x ), silicon nitride (SiN x ), silicon oxynitride (SiO x N y ), aluminum oxide (AlO x ), and titanium oxide ( TiO It may include at least one insulating material and may be composed of a single layer or multiple layers (for example, a double layer composed of aluminum oxide (AlO x ) and silicon oxide (SiO x )), but is not necessarily limited thereto. Depending on the embodiment, the insulating film 14 may be omitted.
- the insulating film 14 is provided to cover the surface of the light emitting device LD, for example, the outer peripheral surface of the active layer 12, the active layer 12 is prevented from being short-circuited with the first or second pixel electrode, which will be described later. It can be prevented. Accordingly, the electrical stability of the light emitting device LD can be secured.
- the insulating film 14 is provided on the surface of the light emitting device LD, surface defects of the light emitting device LD can be minimized and lifespan and efficiency can be improved. Even when a plurality of light emitting devices LD are arranged close to each other, unwanted short circuits between the light emitting devices LD can be prevented.
- the light emitting device LD may further include additional components in addition to the first semiconductor layer 11, the active layer 12, the second semiconductor layer 13, and/or the insulating film 14 surrounding them.
- the light emitting device LD may include one or more phosphor layers, an active layer, a semiconductor layer, and/or disposed on one end of the first semiconductor layer 11, the active layer 12, and/or the second semiconductor layer 13. It may include an electrode layer.
- the type, structure, and/or shape of the light emitting device (LD) may be changed in various ways.
- the light emitting device LD may be formed in a core-shell structure having a polygonal pyramid shape.
- Light-emitting devices including the above-described light-emitting elements (LD) can be used in various types of devices that require a light source, including display devices.
- a plurality of light-emitting devices (LD) may be disposed within each pixel of the display panel, and the light-emitting devices (LD) may be used as a light source for each pixel.
- the application field of the light emitting device (LD) is not limited to the examples described above.
- the light emitting device (LD) can also be used in other types of devices that require a light source, such as lighting devices.
- FIG. 3 is a plan view showing a display device according to an embodiment.
- FIG. 3 shows a display device, particularly a display panel (PNL) provided in the display device, as an example of an electronic device that can use the light emitting device (LD) described in the embodiments of FIGS. 1 and 2 as a light source. do.
- PNL display panel
- LD light emitting device
- FIG. 3 briefly shows the structure of the display panel (PNL) centered on the display area (DA).
- at least one driving circuit unit eg, at least one of a scan driver and a data driver
- wires, and/or pads may be disposed on the display panel PNL.
- Display devices include smartphones, televisions, tablet PCs, mobile phones, video phones, e-book readers, desktop PCs, laptop PCs, netbook computers, workstations, servers, PDAs, PMP (portable multimedia players), MP3 players, medical devices, etc.
- the present invention can be applied to any electronic device with a display surface applied to at least one side, such as a camera or wearable.
- the display panel PNL may include a first substrate SUB1 and a pixel PXL disposed on the first substrate SUB1.
- the first substrate SUB1 (or base layer) constitutes the base member of the display panel PNL and may be a rigid or flexible substrate or film.
- the first substrate SUB1 may be a rigid substrate made of glass or tempered glass, a flexible substrate (or thin film) made of plastic or metal, or at least one layer of insulating layer.
- the material and/or physical properties of the first substrate SUB1 are not particularly limited.
- the first substrate SUB1 may be substantially transparent.
- substantially transparent may mean that light can be transmitted beyond a predetermined (or selective) transmittance.
- the first substrate SUB1 may be translucent or opaque.
- the first substrate SUB1 may include a reflective material.
- the display panel PNL and the first substrate SUB1 may include a display area DA for displaying an image and a non-display area NDA excluding the display area DA.
- a pixel PXL may be disposed in the display area DA.
- Various wires, pads, and/or built-in circuitry connected to the pixel PXL of the display area DA may be disposed in the non-display area NDA.
- the pixel PXL includes sub-pixels SPXL1 to SPXL3.
- the pixel PXL includes a first sub-pixel SPXL1, a second sub-pixel SPXL2, and a third sub-pixel SPXL3. may include.
- the sub-pixels may each emit light of a predetermined (or selective) color. Depending on the embodiment, the sub-pixels (SPXL1 to SPXL3) may emit light of different colors. In one embodiment, the first sub-pixel (SPXL1) emits light of a first color, the second sub-pixel (SPXL2) emits light of a second color, and the third sub-pixel (SPXL3) emits light of a third color. can emit light.
- the first sub-pixel may be a red pixel that emits red light
- the second sub-pixel may be a green pixel that emits green light
- the third sub-pixel may be a green pixel that emits green light.
- the first sub-pixel (SPXL1), the second sub-pixel (SPXL2), and the third sub-pixel (SPXL3) are a first color light emitting device, a second color light emitting device, and a third color light emitting device, respectively.
- first sub-pixel (SPXL1), the second sub-pixel (SPXL2), and the third sub-pixel (SPXL3) have light-emitting elements that emit light of the same color, and are disposed on each light-emitting element.
- each pixel By including color conversion layers and/or color filters of different colors, light of a first color, a second color, and a third color may be emitted, respectively.
- the color, type, and/or number of sub-pixels (SPXL1 to SPXL3) constituting each pixel (PXL) are not particularly limited.
- the color of light emitted by each pixel (PXL) can be changed in various ways.
- the sub-pixels may be arranged regularly according to a stripe or PENTILE TM array structure.
- the first, second, and third sub-pixels SPXL1, SPXL2, and SPXL3 are sequentially and repeatedly arranged along the first direction DR1, and are also repeatedly arranged along the second direction DR2. can be placed.
- At least one first, second, and third sub-pixel (SPXL1, SPXL2, SPXL3) arranged adjacent to each other may form one pixel (PXL) capable of emitting light of various colors.
- the arrangement structure of the sub-pixels SPXL1 to SPXL3 is not limited to this, and the sub-pixels SPXL1 to SPXL3 may be arranged in various structures and/or patterns in the display area DA.
- each of the sub-pixels may be configured as an active pixel.
- each of the sub-pixels (SPXL1 to SPXL3) receives a predetermined (or selective) control signal (e.g., a scan signal and a data signal) and/or a predetermined (or selective) power (e.g., It may include at least one light source (eg, a light emitting device) driven by a first power source and a second power source.
- a predetermined (or selective) control signal e.g., a scan signal and a data signal
- a predetermined (or selective) power e.g., It may include at least one light source (eg, a light emitting device) driven by a first power source and a second power source.
- the type, structure, and/or driving method of the sub-pixels (SPXL1 to SPXL3) that can be applied to the display device are not particularly limited.
- FIGS. 4A, 4B, and 4C each are schematic diagrams showing an example of an equivalent circuit of a pixel included in the display device of FIG. 3.
- FIGS. 4A, 4B, and 4C illustrate the electrical connection relationships of components included in each of the sub-pixels (SPXL1 to SPXL3) that can be applied to an active matrix display device, according to embodiments.
- the connection relationship of each component of the sub-pixels (SPXL1 to SPXL3) is not limited to this.
- the first sub-pixel (SPXL1), the second sub-pixel (SPXL2), and the third sub-pixel (SPXL3) are collectively referred to as the sub-pixel (SPXL).
- the sub-pixel SPXL may include a light emitting unit (EMU) (or light emitting unit) that generates light with a brightness corresponding to the data signal.
- the sub-pixel (SPXL) may optionally include a pixel circuit (PXC) for driving the light emitting unit (EMU).
- the light emitting unit may include a plurality of light emitting elements (LD) connected in parallel between the first power line (PL1) and the second power line (PL2).
- the first power line PL1 is connected to the first driving power source VDD and the voltage of the first driving power source VDD is applied, and the second power line PL2 is connected to the second driving power source VSS. 2
- the voltage of the driving power supply (VSS) may be applied.
- the light emitting unit has a first pixel electrode (CNE1) (or a first electrode) connected to the first driving power source (VDD) via the pixel circuit (PXC) and the first power line (PL1).
- the second pixel electrode (CNE2) (or second electrode) connected to the second driving power source (VSS) through the second power line (PL2), between the first pixel electrode (CNE1) and the second pixel electrode (CNE2) may include a plurality of light emitting elements (LD) connected in parallel in the same direction.
- the first pixel electrode CNE1 may be an anode (or anode electrode)
- the second pixel electrode CNE2 may be a cathode (or cathode electrode).
- Each of the light emitting elements LD included in the light emitting unit EMU has a first end connected to the first driving power source VDD through the first pixel electrode CNE1 and a second end connected to the second pixel electrode CNE2. It may include a second end connected to the driving power source (VSS).
- the first driving power source (VDD) and the second driving power source (VSS) may have different potentials.
- the first driving power source (VDD) may be a high potential power source
- the second driving power source (VSS) may be a low potential power source.
- the potential difference between the first and second driving power sources VDD and VSS may be greater than or equal to the threshold voltage of the light emitting elements LD during the light emission period of each sub-pixel SPXL.
- each light emitting element LD is connected in parallel in the same direction (eg, forward direction) between the first pixel electrode CNE1 and the second pixel electrode CNE2 to which voltages of different power sources are supplied.
- Each effective light source can be configured.
- the light emitting elements (LD) of the light emitting unit (EMU) may emit light with a luminance corresponding to the driving current supplied through the corresponding pixel circuit (PXC).
- the pixel circuit PXC may supply a driving current corresponding to the grayscale value of the corresponding frame data of the pixel circuit PXC to the light emitting unit EMU during each frame period.
- the driving current supplied to the light emitting unit (EMU) may flow separately to each light emitting element (LD). Accordingly, while each light emitting element LD emits light with a brightness corresponding to the current flowing therein, the light emitting unit EMU may emit light with a brightness corresponding to the driving current.
- the light emitting unit (EMU) may further include at least one non-effective light source, for example, a reverse light emitting element (LDr), in addition to the light emitting elements (LD) constituting each effective light source.
- a reverse light emitting element (LDr) is connected in parallel between the first and second pixel electrodes (CNE1, CNE2) along with other light emitting elements (LD) constituting the effective light sources, but is connected in parallel with the other light emitting elements (LD).
- This reverse light emitting device (LDr) remains in an inactive state even if a driving voltage (for example, a forward driving voltage) is applied between the first and second pixel electrodes (CNE1 and CNE2), and accordingly, the reverse light emitting device (LDr) remains in an inactive state. Substantial current may not flow in (LDr).
- a driving voltage for example, a forward driving voltage
- the pixel circuit (PXC) of the sub-pixel (SPXL) may be connected to the scan line (SLi) (or first gate line) and the data line (DLj).
- the pixel circuit PXC of the sub-pixel SPXL may be connected to the control line CLi (or second gate line) and the sensing line SENj (or readout line).
- the pixel circuit PXC of the sub-pixel SPXL is connected to the i-th scan line of the display area DA.
- control line CLi may be connected to the scan line SLi or may be the scan line SLi.
- the pixel circuit PXC may include transistors T1 to T3 and a storage capacitor Cst (or capacitor).
- the first transistor T1 is a driving transistor for controlling the driving current applied to the light emitting unit (EMU), and may be connected between the first driving power source (VDD) and the light emitting unit (EMU).
- the first terminal (or first transistor electrode) of the first transistor T1 may be electrically connected to the first driving power source VDD through the first power line PL1, and the first transistor ( The second terminal (or second transistor electrode) of T1 may be electrically connected to the second node N2, and the gate electrode of the first transistor T1 may be electrically connected to the first node N1.
- the first transistor T1 controls the amount of driving current applied to the light emitting unit (EMU) from the first driving power source (VDD) through the second node (N2) according to the voltage applied to the first node (N1). You can.
- the first terminal of the first transistor T1 may be a drain electrode, and the second terminal of the first transistor T1 may be a source electrode, but the present invention is not limited thereto.
- the first terminal may be a source electrode and the second terminal may be a drain electrode.
- the second transistor T2 is a switching transistor that selects the sub-pixel SPXL and activates the sub-pixel SPXL in response to the scan signal, and may be connected between the data line DLj and the first node N1.
- the first terminal of the second transistor T2 is connected to the data line DLj
- the second terminal of the second transistor T2 is connected to the first node N1
- the gate electrode of the second transistor T2 may be connected to the scan line (SLi).
- the first terminal and the second terminal of the second transistor T2 are different terminals. For example, if the first terminal is a drain electrode, the second terminal may be a source electrode.
- the second transistor T2 is turned on when a scan signal of the gate-on voltage (eg, high level voltage) is supplied from the scan line SLi, and is connected to the data line DLj and the first node ( N1) can be connected electrically.
- the first node (N1) is a point where the second terminal of the second transistor (T2) and the gate electrode of the first transistor (T1) are connected, and the second transistor (T2) is connected to the gate electrode of the first transistor (T1). Data signals can be transmitted.
- a scan signal of the gate-on voltage eg, high level voltage
- the first terminal of the third transistor T3 is connected to the sensing line SENj, the second terminal of the third transistor T3 is connected to the second terminal of the first transistor T1, and the third transistor T3 )
- the gate electrode may be connected to the control line (CLi).
- a voltage (initialization voltage) may be applied to the sensing line (SENj) from an initialization power source.
- the third transistor T3 is an initialization transistor capable of initializing the second node N2, and is turned on when a sensing control signal is supplied from the control line CLi to increase the voltage of the initialization power supply to the second node N2. It can be delivered to . Accordingly, the second storage electrode of the storage capacitor Cst electrically connected to the second node N2 may be initialized.
- the third transistor T3 connects the first transistor T1 to the sensing line SENj, thereby obtaining a sensing signal through the sensing line SENj, and using the sensing signal to connect the first transistor T1 to the sensing line SENj.
- the characteristics of the sub-pixel (SPXL), including the threshold voltage of T1), may be detected.
- Information about the characteristics of the sub-pixels (SPXL) can be used to convert image data so that characteristic differences between the sub-pixels (SPXL) can be compensated.
- the storage capacitor Cst may be formed between the first node N1 and the second node N2, or may be electrically connected between the first node N1 and the second node N2.
- the storage capacitor Cst charges a data voltage corresponding to the data signal supplied to the first node N1 during one frame period. Accordingly, the storage capacitor Cst can store a voltage corresponding to the difference between the voltage of the gate electrode of the first transistor T1 and the voltage of the second node N2.
- a parasitic capacitor Cpara may be formed between the first node N1 and a signal line adjacent to the first node N1.
- the signal line may be a scan line (SLi), a data line (DLi), and/or a power line to which the first and second driving powers (VDD and VSS) are applied.
- the parasitic capacitor Cpara affects the voltage (or voltage change) of the first node N1, and as a result, the sub-pixel SPXL may not emit light at the desired brightness. It is necessary to increase the capacity of the storage capacitor (Cst) to alleviate or exclude the influence of the parasitic capacitor (Cpara). The influence of the parasitic capacitor Cpara will be described later with reference to FIG. 5, and the storage capacitor Cst with increased capacity will be described later with reference to FIG. 10.
- the light emitting unit may include at least one serial stage (or stage) including a plurality of light emitting elements (LD) electrically connected to each other in parallel.
- serial stage or stage
- LD light emitting elements
- the light emitting unit (EMU) may be configured in a series/parallel mixed structure.
- the light emitting unit (EMU) may be configured to include a first series end (SET1) and a second series end (SET2).
- the light emitting unit (EMU) includes a first series end (SET1), a second series end (SET2), a third series end (SET3), and a fourth series end (SET4). It may also be configured to include.
- the number of series stages included in the light emitting unit (EMU) may vary.
- the light emitting unit (EMU) may include three, five or more serial stages.
- the light emitting unit may include a first series terminal (SET1) and a second serial terminal (SET2) sequentially connected between the first driving power supply (VDD) and the second driving power supply (VSS). You can.
- Each of the first series stage (SET1) and the second series stage (SET2) includes two electrodes (CNE1 and CTE_S1, CTE_S2 and CNE2) constituting the electrode pair of the corresponding series stage, and the two electrodes (CNE1 and It may include a plurality of light emitting elements (LD) connected in parallel in the same direction between CTE_S1, CTE_S2, and CNE2).
- LD light emitting elements
- the first serial stage SET1 (or first stage) includes a second pixel electrode CNE2 (or first pixel electrode) and a first sub-intermediate electrode CTE_S1, and the second pixel electrode CNE2 and the first sub-intermediate electrode CTE_S1. It may include at least one first light emitting element (LD1) connected between the first sub-middle electrode (CTE_S1).
- the first series stage SET1 may further include a reverse light emitting element LDr connected in the opposite direction to the other first light emitting element LD1 between the second pixel electrode CNE2 and the first sub middle electrode CTE_S1. there is.
- the second series stage (SET2) (or second stage) includes a second sub-middle electrode (CTE_S2) and a first pixel electrode (CNE1) (or a second pixel electrode), and the second sub-middle electrode (CTE_S2) It may include at least one second light emitting element (LD2) connected between the first pixel electrode (CNE1).
- the second series stage SET2 may further include a reverse light-emitting element LDr connected in the opposite direction to the other second light-emitting element LD2 between the second sub-middle electrode CTE_S2 and the first pixel electrode CNE1. there is.
- the first sub-middle electrode (CTE_S1) of the first series end (SET1) and the second sub-middle electrode (CTE_S2) of the second series end (SET2) may be integrated.
- the first sub-middle electrode (CTE_S1) and the second sub-middle electrode (CTE_S2) are a first middle electrode electrically connecting the continuous first series end (SET1) and the second series end (SET2).
- CTE1) can be configured.
- the first sub-middle electrode (CTE_S1) and the second sub-middle electrode (CTE_S2) are integrated, the first sub-middle electrode (CTE_S1) and the second sub-middle electrode (CTE_S2) are different from each other of the first middle electrode (CTE1). It may be part of it.
- the terms pixel electrode and intermediate electrode are only expressions to distinguish electrodes, and the corresponding configuration (i.e., electrode) is not limited by the terms.
- the light emitting unit has a first series terminal (SET1), a second series terminal (SET2), and a third serial terminal (SET1) sequentially connected between the first driving power supply (VDD) and the second driving power supply (VSS). It may include a serial stage (SET3) and a fourth serial stage (SET4).
- the first serial stage SET1 in FIG. 4C may be substantially the same as the first serial stage SET1 in FIG. 4B.
- the second series end SET2 may include at least one second light emitting element LD2 connected between the second sub-middle electrode CTE_S2 and the third sub-middle electrode CTE_S3.
- the third series end SET3 may include at least one third light emitting element LD3 connected between the fourth sub-middle electrode CTE_S4 and the fifth sub-middle electrode CTE_S5.
- the fourth series stage SET4 may include at least one fourth light emitting element LD4 connected between the sixth sub-middle electrode CTE_S6 and the second pixel electrode CNE2.
- the third sub-middle electrode (CTE_S3) and the fourth sub-middle electrode (CTE_S4) are integrated and may form the second middle electrode (CTE2).
- the fifth sub-middle electrode (CTE_S5) and the sixth sub-middle electrode (CTE_S6) are integrated and may form the third middle electrode (CTE3).
- EMU light emitting unit
- the light emitting unit (EMU) of the sub-pixel (SPXL) including the series stages (SET1 to SET4) can reduce the driving current compared to the light emitting unit in which the light emitting elements (LD) are only connected in parallel.
- the light emitting unit (EMU) of the sub-pixel (SPXL) including the series stages (SET1 to SET4) can emit light with higher luminance for the same driving current.
- the light emitting unit (EMU) of the sub-pixel (SPXL) including the series stages (SET1 to SET4) is different from the light emitting unit (EMU) of the light emitting unit (EMU) of the structure in which the same number of light emitting elements (LD) are all connected in series.
- the driving voltage applied to both ends can be reduced.
- the transistors T1 to T3 included in the pixel circuit PXC are all shown as n-type transistors, but they are not limited thereto.
- at least one of the transistors T1 to T3 may be changed to a p-type transistor.
- the structure and driving method of the sub-pixel can be changed in various ways.
- the pixel circuit PXC may be composed of pixel circuits with various structures and/or driving methods in addition to the embodiments shown in FIGS. 4A, 4B, and 4C.
- the pixel circuit PXC may not include the third transistor T3.
- the pixel circuit PXC includes a compensation transistor for compensating the threshold voltage of the first transistor T1, an initialization transistor for initializing the voltage of the first node N1 and/or the first pixel electrode CNE1, It may further include other circuit elements such as an emission control transistor for controlling the period during which driving current is supplied to the light emitting unit (EMU), and/or a boosting capacitor for boosting the voltage of the first node (N1).
- FIG. 5 is a schematic waveform diagram explaining the operation of the pixel of FIG. 4A.
- the scan signal SC (or first gate signal) applied to the scan line SLi is a gate-on voltage (e.g., high level voltage), and the sensing control signal SS applied to the control line CLi (or the second gate signal) may have a gate-on voltage.
- the first section (P1) is a section allocated to write a data signal to the sub-pixel (SPXL) in one frame (FRAME), the first section (P1) is a non-emission section, and the first section (P1) is The remaining section (i.e., the remaining section of the frame (FRAME), especially, the remaining section after the first section (P1)) may be a light emission section.
- the second transistor T2 In response to the scan signal SC of the gate-on voltage, the second transistor T2 is turned on, a data signal is applied from the data line DLj to the first node N1, and the first node N1
- the voltage, that is, the first node voltage (V_N1) may vary.
- the third transistor T3 is turned on in response to the sensing control signal SS of the gate-on voltage, the voltage of the initialization power supply is applied to the second node N2, and the second node N2
- the voltage, that is, the second node voltage (V_N2) may vary.
- a voltage corresponding to the difference between the first node voltage (V_N1) and the second node voltage (V_N2) may be charged in the storage capacitor (Cst).
- the second node voltage (V_N2) increases as the driving current flows through the first transistor (T1), and the second node voltage (V_N2) increases due to the storage capacitor (Cst).
- the first node voltage (V_N1) may increase.
- the voltage difference (i.e., Vgs2) between the ideal first node voltage (V_N1) and the second node voltage (V_N2) should be equal to the voltage difference (i.e., Vgs1) in the first section (P1).
- the actual voltage difference i.e., Vgs3
- the difference i.e., Vgs1
- the sub-pixel SPXL may be provided with a storage capacitor Cst having an increased capacity.
- FIG. 6 is a schematic cross-sectional view showing an example of a sub-pixel in the display device of FIG. 3.
- the first transistor T1 (see FIG. 4A ) and the first and second power lines PL1 and PL2 are shown as examples of circuit elements that can be disposed on the pixel circuit layer (PCL).
- PCL pixel circuit layer
- the sub-pixel SPXL may include a pixel circuit layer (PCL) and a display element layer (DPL) disposed on the first substrate SUB1.
- PCL pixel circuit layer
- DPL display element layer
- the pixel circuit layer includes a first transistor (T1), a first power line (PL1), a second power line (PL2), and a plurality of insulating layers (BFL, ILD, GI, ILD, PSV, VIA). may include.
- the first transistor T1 includes a lower metal layer (BML), a semiconductor pattern (SCP), a gate electrode (GE), a source electrode (SE) (or a second transistor electrode, a second terminal), and a drain electrode (DE) (or , a first transistor electrode, and a first terminal).
- a first conductive layer may be positioned between the first substrate SUB1 and the buffer layer BFL.
- the first conductive layer may include a conductive material.
- Conductive materials include silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), and chromium ( It may include at least one metal or an alloy thereof among various metal materials including Cr), titanium (Ti), molybdenum (Mo), copper (Cu), etc.
- the first conductive layer may be composed of a single layer, a double layer, or a multilayer.
- the first conductive layer may include a lower metal layer (BML), a first power line (PL1), and a second power line (PL2).
- the lower metal layer BML and the gate electrode GE of the first transistor T1 may overlap each other with the buffer layer BFL interposed therebetween.
- the lower metal layer (BML) may be disposed below the semiconductor pattern (SCP) of the first transistor (T1). At this time, the lower metal layer (BML) serves as a light blocking pattern and can stabilize the operating characteristics of the first transistor (T1).
- the first transistor T1 may not include the lower metal layer BML.
- the buffer layer (BFL) may be located directly on the first substrate (SUB1).
- the lower metal layer BML may be physically and/or electrically connected to the source electrode SE of the first transistor T1, which will be described later, through a contact hole in the insulating layer. Accordingly, the threshold voltage of the first transistor T1 can be moved in the negative or positive direction.
- the buffer layer BFL (or first insulating layer) may cover the first conductive layer and be located on the first substrate SUB1.
- the buffer layer (BFL) can prevent impurities from diffusing into the pixel circuit layer (PCL).
- the buffer layer (BFL) may include an inorganic material.
- the inorganic material may include at least one of metal oxides such as silicon nitride (SiN x ), silicon oxide (SiO x ), silicon oxynitride (SiO x N y ), and aluminum oxide (AlO x ).
- the buffer layer BFL may be omitted depending on the material and process conditions of the first substrate SUB1.
- the semiconductor pattern (SCP) may be located on the buffer layer (BFL).
- the semiconductor pattern (SCP) includes a first region (eg, source region) connected to the source electrode (SE), a second region (eg, drain region) connected to the drain electrode (DE), and first and It may include a channel area between the second areas.
- the channel region may overlap the gate electrode GE of the first transistor T1 in the third direction DR3 (in the thickness direction of the first substrate SUB1).
- the semiconductor pattern (SCP) may be made of polycrystalline silicon, amorphous silicon, or oxide semiconductor.
- the gate insulating layer GI (or the second insulating layer) may be disposed on the semiconductor pattern SCP.
- the gate insulating layer GI may be disposed only on the semiconductor pattern SCP or may be entirely disposed on the first substrate SUB1.
- the gate insulating layer (GI) may include an inorganic material. However, it is not limited to this, and the gate insulating layer (GI) may include an organic material.
- organic materials include polyacrylates resin, epoxy resin, phenolic resin, polyamides resin, polyimides resin, and unsaturated polyester. Contains at least one of unsaturated polyesters resin, poly-phenylene ethers resin, poly-phenylene sulfides resin, and benzocyclobutene resin. can do.
- a second conductive layer may be disposed on the gate insulating layer GI.
- the second conductive layer may include a conductive material similar to the first conductive layer.
- the second conductive layer may include a gate electrode (GE), an 11th connection pattern (CP11), and a 21st connection pattern (CP21).
- the gate electrode GE may be disposed on the gate insulating layer GI to overlap the channel region of the semiconductor pattern SCP in the third direction DR3.
- the 11th connection pattern CP11 may overlap the first power line PL1, and the 21st connection pattern CP21 may overlap the second power line PL2 in the third direction DR3.
- the interlayer insulating layer ILD (or the first interlayer insulating layer or the third insulating layer) covers the second conductive layer and may be entirely disposed on the first substrate SUB1.
- the interlayer insulating layer (ILD) may include an inorganic material, similar to the gate insulating layer (GI).
- the interlayer dielectric layer (ILD) may include organic materials.
- a third conductive layer may be disposed on the interlayer insulating layer (ILD).
- the third conductive layer may include a conductive material similar to the first conductive layer.
- the third conductive layer may include a source electrode (SE), a drain electrode (DE), a twelfth connection pattern (CP12), and a twelfth connection pattern (CP22).
- the source electrode (SE) contacts or is connected to the first region of the semiconductor pattern (SCP) through a contact hole penetrating the interlayer dielectric layer (ILD), and also penetrates the interlayer dielectric layer (ILD) and the buffer layer (BFL). It may contact or be connected to the lower metal layer (BML) through the contact hole.
- the drain electrode DE may contact or be connected to the second region of the semiconductor pattern SCP through a contact hole penetrating the interlayer insulating layer ILD. Similar to the source electrode SE, the twelfth connection pattern CP12 is in contact with or connected to the first power line PL1 and the eleventh connection pattern CP11, and the twenty-second connection pattern CP22 is connected to the second power line PL1.
- the 11th connection pattern CP11 and CP12 are connected to the first power line PL1, thereby reducing the resistance of the first power line PL1.
- the 21st connection pattern CP21 and the 22nd connection pattern CP22 are connected to the second power line PL2, thereby reducing the resistance of the second power line PL2.
- the protective layer PSV (or the second interlayer insulating layer) may be entirely disposed on the first substrate SUB1 to cover the third conductive layer.
- the protective layer (PSV) may include an inorganic material.
- the protective layer (PSV) may be provided as a single layer, or as a double or multilayer layer. Depending on the embodiment, the protective layer (PSV) may be omitted.
- a via layer (VIA) (or a passivation layer) may be disposed on the protective layer (PSV).
- the via layer (VIA) may be disposed entirely on the first substrate (SUB1).
- the via layer (VIA) may include an organic material.
- the via layer (VIA) may provide a flat surface on top.
- a display device layer (DPL) may be located on the via layer (VIA).
- the display element layer DPL includes first and second bank patterns BNP1 and BNP2, first and second electrodes ELT1 and ELT2 (or alignment electrodes and reflective electrodes), and a first bank BNK1. ), a light emitting device (LD), first and second pixel electrodes (CNE1, CNE2) (or contact electrodes), and a plurality of insulating layers (INS1 to INS3).
- the first and second bank patterns BNP1 and BNP2 may be disposed on the via layer VIA.
- each of the first and second bank patterns BNP1 and BNP2 is a trapezoid whose width becomes narrower as it moves upward from one surface (eg, top surface) of the via layer VIA in the third direction DR3. It can have a shape.
- each of the first and second bank patterns BNP1 and BNP2 has a semi-elliptical shape whose width becomes narrower as it moves upward from one side of the via layer VIA in the third direction DR3 in a cross-sectional view; It may also include a curved surface having a semicircular shape (or hemispherical shape).
- each of the first and second bank patterns BNP1 and BNP2 is not limited to the above-described embodiments, and is within a range that can improve the efficiency of light emitted from each of the light emitting elements LD. can be changed in various ways.
- the first and second bank patterns BNP1 and BNP2 include an inorganic material and/or an organic material and may be composed of a single layer or a multilayer. Depending on the embodiment, the first and second bank patterns BNP1 and BNP2 may be omitted. For example, a structure corresponding to the first and second bank patterns BNP1 and BNP2 may be formed in the via layer VIA.
- the first and second electrodes ELT1 and ELT2 may be disposed on the via layer VIA and the first and second bank patterns BNP1 and BNP2.
- the first electrode ELT1 may be disposed on the first bank pattern BNP1, and the second electrode ELT2 may be disposed on the second bank pattern BNP2.
- the first and second electrodes ELT1 and ELT2 may have surface profiles corresponding to the shapes of the first and second bank patterns BNP1 and BNP2, respectively.
- the first and second electrodes ELT1 and ELT2 each use a conductive electrode having reflectivity to allow light emitted from the light emitting element LD to travel in the image display direction of the display device (for example, the third direction DR3). May contain substances.
- the first and second electrodes ELT1 and ELT2 may be composed of a single layer or a multilayer.
- the second electrode ELT2 contacts the twelfth connection pattern CP12 through the first contact hole CNT1 penetrating the via layer VIA and the protective layer PSV. can be connected
- the second electrode ELT2 (or the first electrode ELT1) may be electrically connected to the first power line PL1.
- the second electrode ELT2 may be directly connected to the twelfth connection pattern CP12, but is not limited thereto.
- the second electrode ELT2 may be connected to the twelfth connection pattern CP12 (CP12) through a bridge electrode. Alternatively, it may be connected to the 11th connection pattern (CP11) and the first power line (PL1).
- the first and second electrodes ELT1 and ELT2 may be used as alignment electrodes to align the light emitting device LD during the manufacturing process of the display device.
- the first insulating layer INS1 may be disposed on the via layer VIA to cover at least a portion of the first and second electrodes ELT1 and ETL2.
- the first insulating layer INS1 is located between the first electrode ELT1 and the second electrode ELT2 and prevents a short circuit (for example, a short circuit) between the first electrode ELT1 and the second electrode ELT2. It can be prevented.
- the first insulating layer INS1 may include an inorganic material or an inorganic material.
- a light emitting device may be disposed on the first insulating layer (INS1).
- the light emitting device LD is configured so that the first end EP1 of the light emitting device LD is directed toward the first electrode ELT1 and the second end EP2 of the light emitting device LD is toward the second electrode ELT2. It may be aligned between the first electrode (ELT1) and the second electrode (ELT2).
- the first end EP1 of the light emitting device LD partially overlaps the first electrode ELT1 in the third direction DR3, and the second end EP2 of the light emitting device LD extends in the third direction DR3. ) may partially overlap with the second electrode (ELT2). However, it is not limited to this.
- the first bank (BNK1) may be disposed on the first insulating layer (INS1).
- the first bank BNK1 prevents the solution containing the light emitting device LD from flowing into the adjacent sub-pixel SPXL, or It may be a dam structure that controls a certain amount of solution to be supplied to each sub-pixel (SPXL).
- the first bank (BNK1) may define an emission area (EA).
- the light emitting area EA may correspond to the opening OPA1 of the first bank BNK1.
- the first bank (BNK1) may include an organic material.
- the first bank BNK1 may include a light blocking material and/or a reflective material.
- the first bank (BNK1) can prevent light leakage defects in which light (or light) leaks between adjacent sub-pixels (SPXL).
- the first bank BNK1 may include a color filter material or a black matrix material.
- a reflective layer may be separately provided and/or formed on the first bank BNK1 to further improve the efficiency of light emitted to the outside from the sub-pixel SPXL.
- a second insulating layer INS2 (or a second insulating pattern) may be disposed on the light emitting device LD.
- the second insulating layer INS2 is a portion of the upper surface of the light emitting device LD so that the first end EP1 and the second end EP2 of the light emitting device LD are not covered by the second insulating layer INS2. It can be located on the top.
- the second insulating layer INS2 may also be disposed on the first insulating layer INS1 and the first bank BNK1.
- the second insulating layer INS2 may include an inorganic material or an organic material. After the light emitting device LD is aligned on the first insulating layer INS1, the second insulating layer INS2 is formed on the light emitting device LD to prevent the light emitting device LD from being aligned. It can be prevented. If a gap (or space) exists between the first insulating layer (INS1) and the light emitting device (LD) before forming the second insulating layer (INS2), the gap is formed in the second insulating layer (INS2). may be filled with a second insulating layer (INS2).
- the first pixel electrode CNE1 may be disposed on the first electrode ELT1.
- the first pixel electrode CNE1 may directly contact the first end EP1 of the light emitting device LD.
- the first pixel electrode (CNE1) connects the first contact hole (CNT2) through the second insulating layer (INS2), the first insulating layer (INS1), the via layer (VIA), and the protective layer (PSV). It may be in contact with or connected to the source electrode (SE) of the transistor (T1).
- the first pixel electrode CNE1 may electrically connect the first end EP1 of the light emitting device LD and the source electrode SE of the first transistor T1.
- the first pixel electrode (CNE1) and the second pixel electrode (CEN2) are made of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnOx), and indium gallium. It may contain a transparent conductive material such as zinc oxide (indium gallium zinc oxide, IGZO).
- the third insulating layer INS3 may be positioned on the second insulating layer INS2 and the first pixel electrode CNE1 to cover the second insulating layer INS2 and the first pixel electrode CNE1.
- the third insulating layer INS3 may be positioned so that the second end EP2 of the light emitting device LD is exposed and its edge contacts one end of the second insulating layer INS2.
- the third insulating layer INS3 may include an inorganic material or an organic material.
- the second pixel electrode CNE2 may be disposed on the second electrode ELT2.
- the second pixel electrode CNE2 may directly contact the second end EP2 of the light emitting device LD.
- the second pixel electrode (CNE2) is a third contact that penetrates the third insulating layer (INS3), the second insulating layer (INS2), the first insulating layer (INS1), the via layer (VIA), and the protective layer (PSV). It may contact or be connected to the twenty-second connection pattern CP22 through the hole CNT3.
- the second pixel electrode CNE2 may electrically connect the second end EP2 of the light emitting device LD and the second power line PL2.
- a transparent conductive material e.g., ITO
- ITO is a conductive layer (e.g., source electrode (SE), 22nd connection pattern) in the pixel circuit layer (PCL) rather than a conductive material (or metal material) having a specific reflectance. (CP22)) has excellent bonding strength and can have low contact resistance. Accordingly, the first and second pixel electrodes CNE1 and CNE2 may be directly connected to components within the pixel circuit layer PCL without being connected to the first and second electrodes ELT1 and ELT2. However, it is not limited to this.
- the first pixel electrode CNE1 and the second pixel electrode CNE2 are described as being located on different layers with the third insulating layer INS3 interposed between them, but the present invention is not limited thereto.
- the first pixel electrode CNE1 and the second pixel electrode CNE2 may be disposed on the same layer (eg, the second insulating layer INS2) through the same process.
- FIG. 7A is a schematic cross-sectional view showing an example of a sub-pixel in the display device of FIG. 3.
- FIGS. 7B and 7C are schematic cross-sectional views each showing an example of a sub-pixel in the display device of FIG. 3.
- Figure 7c shows another example of a pixel with a modified position of the color conversion layer (CCL) compared to Figure 7b.
- Figure 7b shows an embodiment in which the color conversion layer (CCL) is located on the display element layer (DPL) through a continuous process
- Figure 7c shows the second substrate (SUB2) including the color conversion layer (CCL).
- FIGS. 7A, 7B, and 7C differences from the above-described embodiments (eg, the embodiment of FIG. 6) will be mainly described to avoid redundant description.
- the sub-pixel SPXL (or display device) may include a light conversion layer LCPL disposed on the display element layer DPL.
- the light conversion layer may further include a second bank (BNK2), a color conversion layer (CCL), and color filters (CF1 to CF3).
- BNK2 second bank
- CCL color conversion layer
- CF1 to CF3 color filters
- the second bank BNK2 may be disposed on the display element layer DPL.
- the second bank (BNK2) is located in the non-emission area (NEA, see FIG. 7B) and may be a structure that defines a location where the color conversion layer (CCL) is to be supplied.
- the second bank (BNK2) may include an organic material. Depending on the embodiment, the second bank BNK2 may include a light blocking material. In one embodiment, the second bank (BNK2) may be a black matrix. Depending on the embodiment, the second bank BNK2 may include at least one light blocking material and/or a reflective material. Accordingly, the light emitted from the color conversion layer CCL can be further advanced in the image display direction (or third direction DR3) of the display device, thereby improving the light emission efficiency of the sub-pixel SPXL.
- the color conversion layer may be disposed on the display element layer (DPL) (or the light emitting element (LD)) within the area surrounded by the second bank (BNK2).
- the color conversion layer may include color conversion particles (QD) (or wavelength conversion particles) corresponding to a specific color.
- QD color conversion particles
- the color conversion layer converts light of the first color (or first wavelength band) incident from the light emitting device (LD) into light of the second color (or specific color, second wavelength band). It may include color conversion particles (QD) that convert and emit.
- the first color conversion layer (CCL1) of the first sub-pixel (SPXL1) emits light from the light emitting device (LD). It may include first color conversion particles (QDr) of red quantum dots that convert first color light into second color light, for example, red light.
- QDr first color conversion particles
- the second color conversion layer (CCL2) of the second sub-pixel (SPXL2) transmits the first color light emitted from the light emitting device (LD). It may include second color conversion particles (QDg) of green quantum dots that convert light of a third color, for example, into green light.
- QDg second color conversion particles
- the third color conversion layer (CCL3) of the third sub-pixel (SPXL3) transmits the first color light emitted from the light emitting device (LD). It may also include color conversion particles of blue quantum dots that convert light of a fourth color, for example, into blue light.
- the third sub-pixel (SPXL3) when the third sub-pixel (SPXL3) is a blue pixel (or blue sub-pixel) and the light emitting device (LD) emits blue light, the third sub-pixel (SPXL3) contains light scattering particles ( It may also include a light scattering layer including SCT). The light scattering layer described above may be omitted depending on the embodiment.
- a transparent polymer when the third sub-pixel SPXL3 is a blue pixel (or blue sub-pixel), a transparent polymer may be provided instead of the third color conversion layer CCL3.
- the fourth insulating layer INS4 may be disposed on the color conversion layer CCL and the second bank BNK2.
- the fourth insulating layer INS4 may be provided entirely on the first substrate SUB1 to cover the second bank BNK2 and the color conversion layer CCL.
- the fourth insulating layer INS4 may include an inorganic material or an organic material.
- the fourth insulating layer INS4 totally reflects light emitted from the color conversion layer CCL (for example, light traveling in a diagonal direction) using the difference in refractive index from the adjacent structure, and the sub-pixel The light output efficiency of (SPXL) can be improved.
- the fourth insulating layer (INS4) may have a relatively low refractive index compared to the color conversion layer (CCL).
- the fourth insulating layer INS4 may have a flat surface while alleviating steps caused by components disposed below the fourth insulating layer INS4.
- first and second capping layers CAP1 and CPA2 may be disposed above and below the fourth insulating layer INS4, respectively.
- the first capping layer (CAP1) is disposed on the color conversion layer (CCL) and can prevent moisture (or a solution used in a subsequent process) from penetrating into the color conversion layer (CCL) below.
- the first capping layer (CAP1) may include an inorganic material.
- the first capping layer (CAP1) is disposed on the color conversion layer (CCL) and can prevent moisture (or a solution used in a subsequent process) from penetrating into the color conversion layer (CCL) below.
- the first capping layer (CAP1) may include an inorganic material.
- the second capping layer (CAP2) is disposed on the fourth insulating layer (INS4) and may include an inorganic material.
- the second capping layer (CAP2) can prevent moisture from penetrating into the fourth insulating layer (INS4).
- the second capping layer (CAP2) may improve the adhesion between the fourth insulating layer (INS4) and the color filter layer.
- a color filter layer may be disposed on the fourth insulating layer INS4.
- the color filter layer may include a color filter (CF) corresponding to the color of each adjacent sub-pixel.
- CF color filter
- the first color filter CF1 is disposed on the first color conversion layer CCL1 of the first sub-pixel SPXL1
- the first color filter CF1 is disposed on the second color conversion layer CCL2 of the second sub-pixel SPXL2.
- the second color filter CF2 may be disposed on the third color conversion layer CCL3 of the third sub-pixel SPXL3.
- Each of the first, second, and third color filters CF1, CF2, and CF3 may include a color filter material that selectively transmits light of a specific color converted in the color conversion layer (CCL).
- the first color filter CF1 may be a red color filter
- the second color filter CF2 may be a green color filter
- the third color filter CF3 may be a blue color filter.
- the color filter CF described above may be provided on one side of the fourth insulating layer INS4 to correspond to the color conversion layer CCL.
- the first, second, and third color filters CF1, CF2, and CF3 are arranged to overlap each other in the non-emission area NEA, thereby blocking light interference between adjacent sub-pixels.
- a separate light blocking pattern may be disposed in the non-emission area NEA instead of the stacked structure of the first, second, and third color filters CF1, CF2, and CF3.
- a fifth insulating layer (INS5) may be disposed on the color filter layer.
- the fifth insulating layer INS5 may include an inorganic material or an organic material.
- the fifth insulating layer (INS5) entirely covers the components located below it and can block external moisture or moisture from flowing into the color filter layer and the display element layer (DPL).
- the fifth insulating layer INS5 may be formed of multiple layers.
- the fifth insulating layer INS5 may include at least two layers of inorganic layers and at least one layer of organic layer interposed between the at least two layers of inorganic layers.
- the constituent materials and/or structure of the fifth insulating layer (INS5) may be changed in various ways.
- at least one overcoat layer, a filler layer, and/or an upper substrate may be further disposed on the fifth insulating layer INS5.
- the color conversion layer (CCL) is formed directly on the display element layer (DPL), but the present invention is not limited thereto.
- the color conversion layer (CCL) may be formed on a separate substrate, for example, the second substrate (SUB2), as shown in FIG. 7C, and may be coupled to the display element layer (DPL) through an adhesive material.
- the adhesive material may be an optically clear adhesive layer, but is not limited thereto.
- the second substrate SUB2 (or upper substrate) may constitute an encapsulation substrate and/or a window member of the display device.
- the second substrate SUB2 may be made of the same material as the first substrate SUB1, or may be made of a different material.
- the color conversion layer (CCL) and the color filter (CF) may be disposed on the lower part of the second substrate (SUB2) to face the display element layer (DPL).
- a light blocking pattern (LBP) may be located adjacent to the color conversion layer (CCL) and the color filter (CF).
- the light blocking pattern (LBP) may be disposed on the lower part of the second substrate (SUB2) to correspond to the non-emission area (NEA).
- the light blocking pattern (LBP) may be a black matrix.
- the sub-pixel (SPXL) includes a light conversion layer (LCPL) on the display device layer (DPL), that is, includes a color conversion layer (CCL) and a color filter (CF) disposed on the light emitting device (LD)
- LCPL light conversion layer
- CCL color conversion layer
- CF color filter
- FIG. 8 is a layout diagram illustrating an example of a pixel in the display device of FIG. 3.
- FIG. 8 shows an embodiment of the pixel PXL, focusing on the pixel circuit PXC (see FIG. 4A).
- FIGS. 9A and 9B are enlarged views of a third pixel circuit within the pixel of FIG. 8 according to one embodiment.
- FIG. 10 is a schematic cross-sectional view of an embodiment of a storage capacitor taken along line I-I' of FIG. 9A.
- the pixel PXL includes a first pixel circuit (PXC1) for the first sub-pixel (SPXL1, see FIG. 3), and a second sub-pixel (SPXL2, see FIG. 3), and a third pixel circuit (PXC3) for the third sub-pixel (SPXL3, see FIG. 3).
- the first pixel circuit (PXC1) has a structure that is symmetrical to the third pixel circuit (PXC3) in the second direction (DR2), and the second pixel circuit (PXC2) is substantially the same as or similar to the third pixel circuit (PXC3). It can have a structure.
- Each of the first vertical scan lines SL1_V generally extends in the second direction DR2 and may be arranged along the first direction DR1.
- the second vertical scan line (SL2_V) corresponds to the first vertical scan line (SL1_V).
- the first vertical scan line (SL1_V) is configured for the pixel (PXL), and the second vertical scan line (SL2_V) ) may be a configuration for a pixel adjacent to the pixel PXL in the first direction DR1 (or a direction opposite to the first direction DR1).
- the first vertical power line (PL1_V), the sensing line (SEN), the first data line (DL1), the second data line (DL2), the The three data lines DL3 and the second vertical power line PL2_V may be repeatedly arranged along the first direction DR1 for other pixels included in the same row as the pixel PXL.
- the vertical scan line SL1_V is included in the first conductive layer described with reference to FIG. 6 and, for example, may be disposed on the same layer through the same process as the lower metal layer BML of FIG. 6.
- the first horizontal power line PL1_H, the first horizontal scan line SL1_H, and the second horizontal power line PL2_H generally extend in the first direction DR1 and may be arranged along the second direction DR2. there is.
- the first horizontal power line PL1_H, the first horizontal scan line SL1_H, and the second horizontal power line PL2_H are included in the third conductive layer described with reference to FIG. 6, for example, the source of FIG. 6. It can be placed on the same layer through the same process as the electrode (SE) and the drain electrode (DE).
- the first vertical scan line SL1_V and the first horizontal scan line SL1_H may form one scan line (eg, the scan line SLi in FIG. 4A). Depending on the arrangement of the scan driver that supplies the scan signal to the scan line, the first vertical scan line SL1_V may be omitted.
- the first vertical power line (PL1_V) and the first horizontal power line (PL1_H) constitute the first power line (PL1, see FIG. 4A), and the second vertical power line (PL2_V) and the second horizontal power line (PL2_H) may form a second power line (PL2, see FIG. 4A).
- the first power line (PL1) has a mesh structure throughout the display panel (PNL, see FIG.
- the line PL2 may have a mesh structure spanning the entire display panel PNL (see FIG. 3 ) through the second vertical power line PL2_V and the second horizontal power line PL2_H.
- the first horizontal power line PL1_H may be connected to the second electrode ELT2 (see FIG. 6 ) through the first contact hole CNT1.
- the 21st connection pattern CP21 and the 22nd connection pattern CP22 overlap with the second vertical power line PL2_V, and are connected to the second vertical power line (PL2_V) through the contact hole CH. PL2_V).
- the first subpattern (CP_S1) and the second subpattern (CP_S2) overlap the first vertical scan line (SL1_V) and may be connected to the first vertical scan line (SOL1_V) through the contact hole (CH). .
- the pixel circuits (PXC1 to PXC3) of the pixel (PXL) include a first vertical power line (PL1_V), a first horizontal power line (PL1_H), a second vertical power line (PL2_V), and a second horizontal power line (PL2_H). It may be located in an area (or pixel area) partitioned by at least a portion of the area.
- the first pixel circuit (PXC1) is located adjacent to the third pixel circuit (PXC3) in the second direction (DR2)
- the second pixel circuit (PXC2) is located adjacent to the third pixel circuit (PXC3) and the second direction (DR2). It can be located adjacent to in the opposite direction.
- the first semiconductor pattern SCP1 may extend from the first vertical power line PL1_V in the first direction DR1.
- the first semiconductor pattern SCP1 may form the first transistor T1.
- One end of the first semiconductor pattern SCP1 may be connected to the first vertical power line PL1_V through the contact hole CH.
- the other end of the first semiconductor pattern SCP1 overlaps the capacitor electrodes CE1 to CE3 and may be connected to the first capacitor electrode CE1 and the third capacitor electrode CE3 through the contact hole CH.
- the first capacitor electrode CE1 and the third capacitor electrode CE3 have an “L” shaped planar shape and may have substantially the same or similar areas except for the protrusions.
- the second capacitor electrode CE2 (or the gate electrode of the first transistor T1) may be covered by the first capacitor electrode CE1 in a top view except for the protrusions.
- the second capacitor electrode CE2 is overall a certain distance (e.g., about 1 ⁇ m to about 2 ⁇ m) from the edge of the first capacitor electrode CE1 (or the third capacitor electrode CE3). It may be located on the medial side.
- the second capacitor electrode CE2 may overlap the first and third capacitor electrodes CE1 and CE3 in most of the remaining area except for the area where the contact hole CH is formed.
- the second capacitor electrode CE2 may have a “W”-shaped planar shape. However, it is not limited to this, and the shape of the second capacitor electrode CE2 may vary depending on the location of the contact hole CH adjacent to the second capacitor electrode CE2.
- the first capacitor electrode CE1 is included in the first conductive layer between the first substrate SUB1 and the buffer layer BFL
- the second capacitor electrode CE2 is a gate insulating layer ( GI) and the second conductive layer between the interlayer insulating layer (ILD)
- the third capacitor electrode (CE3) may be included in the third conductive layer on the interlayer insulating layer (ILD).
- the first capacitor electrode (CE1) and the second capacitor electrode (CE2) overlap to form a first sub-capacitor
- the second capacitor electrode (CE2) and the third capacitor electrode (CE3) overlap to form a second sub-capacitor. can do. As shown in FIGS.
- the third capacitor electrode (CE3) penetrates the contact hole (CH) (i.e., the buffer layer (BFL), gate insulating layer (GI), and interlayer insulating layer (ILD) in FIG. 10. It is connected to the first capacitor electrode (CE1) through a contact hole (CH), and accordingly, the first sub-capacitor and the second sub-capacitor can be connected in parallel to form a storage capacitor (Cst).
- the storage capacitor Cst includes first and second sub-capacitors formed by the capacitor electrodes CE1 to CE3, compared to the storage capacitor including only the first sub-capacitor or the second sub-capacitor, the storage capacitor Cst ) capacity can be sufficiently secured. Accordingly, the influence of the parasitic capacitor Cpara described with reference to FIG. 5 can be alleviated or eliminated.
- one end of the second capacitor electrode CE2 overlaps the channel region of the first semiconductor pattern SCP1, and the second capacitor electrode CE2 is the gate of the first transistor T1. Electrodes can be constructed. In a plan view, the other end of the second capacitor electrode CE2 may extend in the second direction DR2 beyond the first and third capacitor electrodes CE1 and CE3. The other end of the second capacitor electrode CE2 may be connected to the first bridge pattern BRP1 (or the second transistor T2) through the contact hole CH.
- a portion of the second capacitor electrode CE2 that overlaps the first and third capacitor electrodes CE1 and CE3 may be referred to as a body portion (BODY), and extends from the body portion (BODY) and connects the first and third capacitor electrodes CE1 and CE3.
- a portion that protrudes beyond the capacitor electrodes CE1 and CE3 (or their edges) may be referred to as a first protrusion PRT1 (or a first protrusion pattern).
- the first protrusion PRT1 may protrude toward the second transistor T2.
- the direction in which the first protrusion PRT1 protrudes or extends from the body BODY can be defined as the extension direction EDR.
- the extension direction EDR is the second direction DR2.
- the first line width W1 (i.e., the width in the direction perpendicular to the extension direction EDR) of the first protrusion PRT1 is the width of the body portion BODY (i.e., the width in the first direction DR1). width) may be smaller.
- the second capacitor electrode CE2 extends from the body BODY in a direction opposite to the extension direction EDR than the first and third capacitor electrodes CE1 and CE3 (or edges thereof). It may further include a second protrusion PRT2 (or a second protrusion pattern) protruding.
- the second protrusion (PRT2) is not directly connected to components other than the body (BODY).
- the second line width W2 i.e., the width in the direction perpendicular to the extension direction EDR) of the second protrusion PRT2 may be substantially the same as or similar to the first line width W1 of the first protrusion PRT1. You can.
- an alignment error may occur between the capacitor electrodes (CE1 to CE3).
- An alignment error may occur between the second capacitor electrode CE2, which is one electrode of the storage capacitor Cst, and the first and third capacitor electrodes CE1 and CE3, which are the other electrode of the storage capacitor Cst.
- the second capacitor electrode CE2 may be shifted by 1 ⁇ m in the second direction DR2 based on the first and third capacitor electrodes CE1 and CE3.
- the overlapping area of the first protrusion (PRT1) with respect to the first and third capacitor electrodes (CE1, CE3) may decrease or increase, but on the contrary, the overlap area of the first and third capacitor electrodes (CE1, CE3) may decrease or increase.
- the overlap area of the second protrusion (PRT2) may increase or decrease. That is, the increase/decrease in the overlapping area of the second protrusion PRT2 may offset the decrease/increase in the overlapping area of the first protrusion PRT1. Therefore, despite the alignment error between the capacitor electrodes CE1 to CE3, the overlap area of the second capacitor electrode CE2 with respect to the first and third capacitor electrodes CE1 and CE3 is maintained constant, and the storage capacitor The capacity of (Cst) can be kept constant.
- the pixels (PXL) in the display device may have storage capacitors (Cst) of the same or uniform capacity, and deterioration of display quality (e.g., luminance deviation, stains) can be alleviated or prevented.
- the second capacitor electrode CE2 including the second protrusion PRT2 overlaps the first and third capacitor electrodes CE1 and CE3.
- the area is increased, and accordingly, the capacity of the storage capacitor Cst can be more sufficiently secured. Accordingly, the influence of the parasitic capacitor Cpara described with reference to FIG. 5 can be further alleviated or eliminated.
- the second protrusion PRT2 of the second capacitor electrode CE2 may protrude from the body BODY by about 2 ⁇ m to about 4 ⁇ m, or by about 3 ⁇ m.
- the length or margin MR of the second protrusion PRT2 may be about 2 ⁇ m to about 4 ⁇ m, or about 3 ⁇ m.
- the process error e.g., alignment error between the capacitor electrodes CE1 to CE3
- the second protrusion PRT2 may protrude from the body BODY by about 2 ⁇ m or more. .
- the second protrusion PRT2 may vary depending on the placement position of the second protrusion (PRT2), but when the corner portions of the capacitor electrodes (CE1 to CE3), for example, the first and third capacitor electrodes (CE1, CE3) have a round shape,
- the overlapping area of the two capacitor electrodes CE2 may additionally change, and in consideration of this, the second capacitor electrode CE2 may protrude by approximately 1 ⁇ m or more.
- the second protrusion PRT2 may protrude about 4 ⁇ m or less from the body portion BODY. You can. However, it is not limited to this.
- the first protrusion PRT1 and the second protrusion PRT2 may or may not be aligned in the extension direction EDR.
- the first protrusion PRT1 and the second protrusion PRT2 may be located on different lines extending along the extension direction EDR.
- the first protrusion PRT1 and the second protrusion PRT2 may be located on the same line extending along the extension direction EDR.
- a portion of the third capacitor electrode CE3 of the third pixel circuit PXC3 extends toward the second data line DL2 and is connected to the third bridge electrode BRE3 overlapping the second data line DL2. You can.
- the third bridge electrode BRE3 may be connected to the first pixel electrode CNE1 (see FIG. 6) of the third sub-pixel SPXL3 through the first contact hole CNT1.
- a portion of the third capacitor electrode CE3 of the first pixel circuit PXC1 extends toward the first vertical power line PL1_V and may be connected to the first bridge electrode BRE1. there is.
- the first bridge electrode BRE1 may be connected to the first pixel electrode CNE1 (see FIG. 6) of the first sub-pixel SPXL1 through the first contact hole CNT1.
- a portion of the third capacitor electrode CE3 of the second pixel circuit PXC2 extends toward the first vertical power line PL1_V and may be connected to the second bridge electrode BRE2.
- the second bridge electrode BRE2 may be connected to the first pixel electrode CNE1 (see FIG. 6) of the second sub-pixel SPXL2 through the first contact hole CNT1.
- the fourth bridge electrode (BRE4) is connected to the second vertical power line (PL2_V) or the second horizontal power line (PL2_H), and is also connected to the second pixel electrode (CNE2) through the third contact hole (CNT3), see FIG. 6. ) can be connected to.
- the bridge electrodes BRE1 to BRE4 may be included in the second conductive layer together with the second capacitor electrode CE2.
- the second semiconductor pattern SCP2 extends from the first semiconductor pattern SCP1 in a diagonal direction (for example, a direction between the first direction DR1 and the second direction DR2). They are positioned spaced apart and may extend in the first direction (DR1).
- the second semiconductor pattern SCP2 may form the second transistor T2.
- One end of the second semiconductor pattern (SCP2) may be connected to the first bridge pattern (BRP1) through the contact hole (CH).
- the other end of the second semiconductor pattern SCP2 overlaps the third data line DL3 and may be connected to the third data line DL3 through a bridge pattern (eg, the second bridge pattern BPR2).
- the third semiconductor pattern SCP3 is positioned spaced apart from the second semiconductor pattern SCP2 in a direction opposite to the second direction DR2 and may extend in the first direction DR1. .
- the third semiconductor pattern SCP3 may form the third transistor T3.
- One end of the third semiconductor pattern SCP3 may be connected to the first and third capacitor electrodes CE1 and CE3 through the contact hole CH.
- the other end of the third semiconductor pattern SCP3 overlaps the sensing line SEN and may be connected to the sensing line SEN through a bridge pattern (eg, the third bridge pattern BPR3).
- the bridge patterns BRP1 to BPR3 may be included in the third conductive layer together with the third capacitor electrode CE3.
- One end of the first scan connection line SL1_C is connected to the first horizontal scan line SL1_H, extends from the first horizontal scan line SL1_H in the second direction DR2, and connects the pixel circuits PXC1 to PXC3.
- Gate electrodes of each of the second and third transistors T2 and T3 may be formed by overlapping each of the second and third semiconductor patterns SCP2 and SPC3.
- the storage capacitor Cst includes first and second sub-capacitors composed of first, second, and third capacitor electrodes CE1, CE2, and CE3 that overlap each other, and the first sub-capacitor Alternatively, the storage capacitor Cst may have sufficient capacity compared to a storage capacitor including only the second sub-capacitor.
- the second capacitor electrode CE2 protrudes from the first protrusion PRT1 (that is, the first and third capacitor electrodes CE1 and CE3 in the extending direction EDR) and is used for connection to the second transistor T2.
- the first protrusion (PRT1) it may include a second protrusion (PRT2) that protrudes in a direction opposite to the extension direction (EDR) from the first and third capacitor electrodes (CE1, CE3).
- PRT2 the overlap area of the second capacitor electrode CE2 with respect to the first and third capacitor electrodes CE1 and CE3 by the second protrusion PRT2 is constant. and the capacity of the storage capacitor (Cst) can be maintained constant. Accordingly, the capacity deviation of the storage capacitor Cst between the pixels PXL and the resulting degradation of display quality (eg, luminance deviation, staining) can be alleviated or prevented.
- the second capacitor electrode CE2 including the second protrusion PRT2 has the first and third capacitor electrodes CE1 and CE3.
- the overlapping area is increased, and the capacity of the storage capacitor (Cst) can be more sufficiently secured. Accordingly, the influence of the parasitic capacitor Cpara described with reference to FIG. 5 can be further alleviated or eliminated.
- FIG. 11 is a diagram showing a pixel circuit according to a comparative example.
- FIG. 12 is a schematic cross-sectional view showing a comparative example of a storage capacitor taken along line II-II' of FIG. 11.
- the pixel circuit (PXC_C) of FIG. 11 is substantially the same as the third pixel circuit (PXC3) of FIG. 9A. Because they are similar, overlapping explanations will not be repeated.
- the second capacitor electrode (CE2_C) of the storage capacitor (Cst_C) in FIGS. 11 and 12 does not include the second protrusion (PRT2) in FIGS. 9A and 10 .
- the second capacitor electrode CE2_C which is one electrode of the storage capacitor Cst_C
- the second capacitor electrode CE2_C may move by 1 ⁇ m in the second direction DR2 based on the first and third capacitor electrodes CE1 and CE3.
- the overlapping area of the first protrusion PRT1 with respect to the first and third capacitor electrodes CE1 and CE3 may decrease, and the capacity of the storage capacitor Cst_C may decrease.
- the second capacitor electrode CE2_C may move by 1 ⁇ m in a direction opposite to the second direction DR2 based on the first and third capacitor electrodes CE1 and CE3.
- the overlapping area of the first protrusion PRT1 with respect to the first and third capacitor electrodes CE1 and CE3 increases, and the capacity of the storage capacitor Cst_C may increase. Changes in capacity or variation in capacity of the storage capacitor Cst_C due to such process errors may cause luminance differences between pixels.
- the second capacitor electrode CE2 shown in FIGS. 8 to 10 protrudes from the first and third capacitor electrodes CE1 and CE3 in a direction opposite to the extension direction EDR of the first protrusion PRT1. It includes a second protrusion (PRT2), through which it is possible to prevent variation in capacity of the storage capacitor (Cst) and deterioration of display quality resulting therefrom.
- PRT2 second protrusion
- FIG. 13 is a plan view showing an example of a pixel in the display device of FIG. 3.
- the pixel (PXL) is briefly shown, centered on the light emitting unit (EMU, see FIG. 4C).
- the first sub-pixel (SPXL1), the second sub-pixel (SPXL2), and the third sub-pixel (SPXL3) have substantially the same or similar structures (or light emitting unit (EMU), (see 4c)). Accordingly, the common configuration of the first sub-pixel (SPXL1), the second sub-pixel (SPXL2), and the third sub-pixel (SPXL3) will be described focusing on the first sub-pixel (SPXL1), and overlapping explanations will not be repeated. I decide not to.
- the pixel PXL may be formed in a pixel area provided on the first substrate SUB1 (or via layer VIA).
- the pixel area may include an emission area (EA) and a non-emission area (NEA) excluding the emission area (EA).
- the non-emission area NEA is an area adjacent to the emission area EA, and the emission area EA may be defined by the first bank BNK1, but is not limited thereto.
- the pixel PXL includes first and second electrodes ELT1 and ELT2, a light emitting element LD, first and second pixel electrodes CNE1 and CNE2, and intermediate electrodes CTE1 to CTE3. It can be done, but it is not limited to this.
- the first and second electrodes ELT1 and ELT2 each extend in the second direction DR2, the first and second electrodes ELT1 and ELT2 are spaced apart from each other in the first direction DR1, and the first and second electrodes ELT1 and ELT2 each extend in the second direction DR2. and the second electrodes ELT1 and ELT2 may be alternately arranged along the first direction DR1.
- the first and second electrodes ELT1 and ELT2 may be separated from the first and second electrodes ELT1 and ELT2 included in adjacent pixels in the second direction DR2, but are not limited to this.
- at least one of the first and second electrodes ELT1 and ELT2 of the pixel PXL may be connected to a corresponding electrode of an adjacent pixel in the second direction DR2.
- the first and second electrodes ELT1 and ELT2 may be used as alignment electrodes by applying an alignment voltage after a mixed liquid (eg, ink) containing the light emitting element LD is input into the light emitting area EA.
- the first electrode ELT1 may be a first alignment electrode
- the second electrode ELT2 may be a second alignment electrode.
- the light emitting device LD may be aligned in a desired direction and/or position by the electric field formed between the first alignment electrode and the second alignment electrode.
- the first and second electrodes ELT1 and ELT2 may have a bar shape extending along the second direction DR2 when viewed in plan, but the present invention is not limited thereto.
- the shapes of the first and second electrodes ELT1 and ELT2 can be changed in various ways.
- the light emitting elements LD may be disposed between the first and second electrodes ELT1 and ELT2 so that their respective lengths (L, see FIG. 1) are substantially parallel to the first direction DR1.
- the first light emitting element LD1 is located in the first area (or first path) between the first electrode ELT1 and the second electrode ELT2 on the left in the plan view.
- the second light-emitting element LD2 is disposed in the lower area of the first area in the plan view
- the third light-emitting element LD3 is connected to the second electrode ELT2 and the second electrode ELT2 on the right in the plan view. It may be disposed in the lower area of the second area (or second path) between the first electrodes ELT1, and the fourth light emitting element LD4 may be placed in the upper area of the second area in a plan view.
- the first pixel electrode CNE1 may be positioned to overlap the first end of the first light emitting device LD1 and the first electrode ELT1.
- the first pixel electrode CNE1 may be connected to the first end of the first light emitting device LD1.
- the first pixel electrode (CNE1) constitutes the anode of the light emitting unit (EMU, see Figure 4C) and can be connected to the first transistor (T1, see Figures 4C and 8) through the second contact hole (CNT2). .
- the first pixel electrode CNE1 may be electrically separated from the first electrode ELT1.
- the first pixel electrode CNE1 may extend in the second direction DR2 corresponding to the first electrode ELT1.
- the first intermediate electrode CTE1 may be positioned to overlap the second end of the first light emitting device LD1 and the second electrode ELT2. Additionally, the first intermediate electrode CTE1 may be positioned to overlap the first end of the second light emitting device LD2 and the first electrode ELT1. A portion of the first intermediate electrode CTE1 may have a curved shape. The first intermediate electrode CTE1 may physically and/or electrically connect the second end of the first light-emitting device LD1 and the first end of the second light-emitting device LD2.
- the second intermediate electrode CTE2 may be positioned to overlap the second end of the second light emitting device LD2 and the second electrode ELT2. Additionally, the second intermediate electrode CTE2 may be positioned to overlap the first end of the third light emitting device LD3 and the first electrode ELT1.
- the second intermediate electrode (CTE2) may have a shape that bypasses the third intermediate electrode (CTE3).
- the second intermediate electrode CTE2 may physically and/or electrically connect the second end of the second light-emitting device LD2 and the first end of the third light-emitting device LD3.
- the third intermediate electrode CTE3 may be positioned to overlap the second end of the third light emitting device LD3 and the second electrode ELT2. Additionally, the third intermediate electrode CTE3 may be positioned to overlap the first end of the fourth light emitting device LD4 and the first electrode ELT1. A portion of the third intermediate electrode CTE3 may have a curved shape. The third intermediate electrode CTE3 may physically and/or electrically connect the second end of the third light-emitting device LD3 and the first end of the fourth light-emitting device LD4.
- the second pixel electrode CNE2 may be positioned to overlap the second end of the fourth light emitting device LD4 and the second electrode ELT2.
- the second pixel electrode CNE2 may be connected to the second end of the fourth light emitting device LD4.
- the second pixel electrode (CNE2) forms the cathode of the light emitting unit (EMU, see FIG. 4C) and may be connected to the second power line through the third contact hole (CNT3, see FIG. 8).
- the second pixel electrodes CNE2 of the sub-pixels SPXL1 to SPLX3 may be connected to each other, but are not limited to this.
- the second pixel electrode CNE2 may extend in the second direction DR2 corresponding to the second electrode ELT2.
- FIGS. 14 and 15 are diagrams showing an example of a pixel circuit included in the pixel of FIG. 8.
- the pixel circuit (PXC_1) of FIG. 14 and the pixel circuit (PXC_1) of FIG. 15 may be substantially the same as or similar to the third pixel circuit (PXC3) of FIG. 9A.
- the cross section along line III-III' of FIG. 14 and the cross section along line IV-IV' of FIG. 15 may be substantially the same as or similar to the cross section of FIG. 10. Therefore, overlapping explanations will not be repeated.
- the storage capacitor Cst_1 of the pixel circuit PXC_1 may include a second capacitor electrode CE2_1.
- the first protrusion PRT1 of the second capacitor electrode CE2_1 extends from the body BODY in the first direction DR1, and extends from the first and third capacitor electrodes CE1 and CE3 (or edges thereof). ) may protrude more than the The second protrusion PRT2 extends from the body BODY and may protrude in a direction opposite to the first direction DR1 than the first and third capacitor electrodes CE1 and CE3 (or edges thereof). . That is, in the embodiment of FIG. 14 , the extension direction EDR in which the first protrusion PRT1 extends may be parallel to the first direction DR1.
- the storage capacitor Cst_2 of the pixel circuit PXC_2 may include a second capacitor electrode CE2_2.
- the first protrusion PRT1 of the second capacitor electrode CE2_2 extends from the body BODY in a diagonal direction between the first and second directions DR1 and DR2, and the first and third capacitor electrodes ( It may protrude beyond CE1, CE3) (or their edges).
- the second protrusion PRT2 extends from the body BODY and may protrude in a direction opposite to the diagonal direction than the first and third capacitor electrodes CE1 and CE3 (or edges thereof).
- the extension direction EDR may be a diagonal direction.
- the first protrusion (PRT1) of the second capacitor electrodes (CE2_1, CE2_2) may extend or protrude in a specific direction
- the second protrusion (PRT2) of the second capacitor electrodes (CE2_1, CE2_2) may be It may extend or protrude in a direction opposite to a specific direction.
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Abstract
Description
Claims (20)
- 서브 화소를 포함하며,상기 서브 화소는,제1 노드에 전기적으로 연결되는 게이트 전극, 제1 전원 라인에 전기적으로 연결되는 제1 단자, 제2 노드에 전기적으로 연결되는 제2 단자를 포함하는 제1 트랜지스터;상기 제2 노드 및 제2 전원 라인 사이에 연결되며 적어도 하나의 발광 소자를 포함하는 발광부; 및상기 제1 노드 및 제2 노드 사이에 형성되는 커패시터를 포함하고,상기 커패시터는,제1 커패시터 전극;평면도 상에서 제1 커패시터 전극과 중첩하는 제2 커패시터 전극; 및상기 제1 커패시터 전극 및 상기 제2 커패시터 전극 사이에 배치되는 절연층을 포함하며,상기 제2 커패시터 전극은,평면도 상에서, 데이터 신호를 수신하기 위해 상기 제1 커패시터 전극의 가장자리보다 연장 방향으로 돌출된 제1 돌출부; 및평면도 상에서, 상기 제2 커패시터 전극의 가장자리의 일부보다 상기 연장 방향의 반대 방향으로 돌출된 제2 돌출부를 포함하는, 표시 장치.
- 제1 항에 있어서, 평면도 상에서, 상기 제1 및 제2 돌출부들을 제외한 상기 제2 커패시터 전극은 상기 제1 커패시터 전극에 의해 커버되는, 표시 장치.
- 제2 항에 있어서, 상기 제2 돌출부는 외부 구성 요소와 직접적으로 연결되지 않는, 표시 장치.
- 제1 항에 있어서, 상기 연장 방향에 수직하는 방향으로, 상기 제1 돌출부의 제1 폭 및 상기 제2 돌출부의 제2 폭은 동일한, 표시 장치.
- 제4 항에 있어서, 상기 제1 커패시터 전극 및 상기 제2 커패시터 전극 간의 정렬(alignment) 오차와 무관하게, 평면도 상에서 상기 제1 커패시터 전극 및 상기 제2 커패시터 전극 간의 중첩 면적은 상기 제1 돌출부에 대응하는 상기 제2 돌출부에 의해 일정하게 유지되는, 표시 장치.
- 제1 항에 있어서, 상기 제1 돌출부 및 제2 돌출부는 상호 동일 선 상에 있지 않은, 표시 장치.
- 제1 항에 있어서, 상기 제1 돌출부 및 제2 돌출부는 상호 동일 선 상에 있는, 표시 장치.
- 제1 항에 있어서, 상기 제2 커패시터 전극은 평면도 상에서 상기 제1 커패시터 전극과 중첩하는 본체부를 더 포함하고,상기 본체부의 폭은 상기 연장 방향과 평행한 방향으로 상기 제2 돌출부의 폭보다 크며,상기 제2 돌출부는 상기 본체부로부터 상기 반대 방향으로 약 3μm만큼 돌출되는, 표시 장치.
- 제1 항에 있어서, 상기 제1 커패시터 전극은 단면도 상에서 상기 제1 트랜지스터의 반도체 패턴의 하부에 배치되고,제1 절연층은 상기 제1 커패시터 전극 및 상기 반도체 패턴 사이에 배치되며,상기 제2 커패시터 전극은 단면도 상에서 상기 반도체 패턴의 상부에 배치되고,제2 절연층은 상기 제2 커패시터 전극 및 상기 반도체 패턴 사이에 배치되는, 표시 장치.
- 제9 항에 있어서, 평면도 상에서 상기 커패시터는 상기 제2 커패시터 전극과 중첩하는 제3 커패시터 전극을 더 포함하고,제3 절연층은 상기 제2 커패시터 전극 및 상기 제3 커패시터 전극 사이에 배치되는, 표시 장치.
- 제10 항에 있어서, 상기 제3 커패시터 전극은 상기 제1, 제2, 및 제3 절연층들을 관통하는 컨택홀을 통해 상기 제1 커패시터 전극과 전기적으로 연결되는, 표시 장치.
- 제1 항에 있어서, 상기 제2 커패시터 전극은 상기 제1 트랜지스터의 반도체 패턴의 상부에 배치되고,상기 제1 커패시터 전극은 상기 제2 커패시터 전극의 상부에 배치되며,절연층은 상기 제1 커패시터 전극 및 상기 제2 커패시터 전극 사이에 배치되는, 표시 장치.
- 제1 항에 있어서, 상기 서브 화소는 데이터 라인 및 상기 제1 노드 사이에 전기적으로 연결된 제2 트랜지스터를 더 포함하고,평면도 상에서 상기 제1 돌출부는 상기 제2 트랜지스터를 향해 돌출된, 표시 장치.
- 제13 항에 있어서, 상기 데이터 라인은 상기 연장 방향으로 연장하는, 표시 장치.
- 제13 항에 있어서, 상기 데이터 라인은 상기 연장 방향과 교차하는 방향으로 연장하는, 표시 장치.
- 제1 항에 있어서, 상기 발광부는,상호 이격된 제1 전극 및 제2 전극;상기 제1 전극 상에 배치되며 상기 적어도 하나의 발광 소자의 일단에 전기적으로 연결되는 제1 화소 전극; 및상기 제2 전극 상에 배치되며 상기 적어도 하나의 발광 소자의 타단에 전기적으로 연결되는 제2 화소 전극을 더 포함하며,상기 적어도 하나의 발광 소자는 상기 제1 전극 및 상기 제2 전극 사이에 배치되는, 표시 장치.
- 제16 항에 있어서, 상기 제1 화소 전극은 상기 제1 및 제2 전극들 하부에 배치된 절연층을 관통하는 컨택홀을 통해 상기 제1 트랜지스터의 상기 제2 단자에 전기적으로 연결되는, 표시 장치.
- 제16 항에 있어서, 상기 서브 화소는 상기 발광 소자 상에 배치되며 상기 적어도 하나의 발광 소자로부터 입사된 광의 파장을 변환하여 발산하는 색 변환층을 더 포함하는, 표시 장치.
- 제1 항에 있어서, 상기 제1 전원 라인은,제1 방향으로 연장하는 제1 수직 전원 라인; 및제2 방향으로 연장하는 제2 수직 전원 라인을 포함하고,평면도 상에서, 상기 제1 수직 전원 라인, 상기 제2 수직 전원 라인, 및 상기 제2 전원 라인에 의해 구획된 영역에 하나의 화소를 구성하는 복수의 서브 화소들의 화소 회로들이 배치되며,상기 화소 회로들 각각은 상기 제1 트랜지스터 및 상기 커패시터를 포함하는, 표시 장치.
- 제19 항에 있어서, 상기 영역 내에서 상기 화소 회로들은 상기 제1 방향을 따라 배열되고,상기 서브 화소들을 위한 데이터 라인들은 상기 제1 방향으로 연장하며 상호 인접하여 배치되는, 표시 장치.
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| CN202380044502.1A CN119366283A (zh) | 2022-06-08 | 2023-06-07 | 显示装置 |
| EP23820090.1A EP4525046A4 (en) | 2022-06-08 | 2023-06-07 | DISPLAY DEVICE |
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| US (1) | US12575240B2 (ko) |
| EP (1) | EP4525046A4 (ko) |
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| US20240268181A1 (en) * | 2021-06-10 | 2024-08-08 | Boe Technology Group Co., Ltd. | Wavelength converting unit-containing substrate, manufacture method therefor and display panel |
| WO2026089266A1 (ko) * | 2024-10-22 | 2026-04-30 | 삼성전자주식회사 | 충전 물질의 이동을 제어하기 위한 디스플레이 패널 및 그를 포함하는 전자 장치 |
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| CN106920529A (zh) * | 2017-05-09 | 2017-07-04 | 深圳市华星光电技术有限公司 | 像素单元及包含其的阵列基板 |
| KR20200079894A (ko) * | 2018-12-26 | 2020-07-06 | 엘지디스플레이 주식회사 | 서로 다른 타입의 박막 트랜지스터들을 포함하는 표시장치 및 그 제조방법 |
| KR20210059075A (ko) * | 2019-11-13 | 2021-05-25 | 삼성디스플레이 주식회사 | 표시 장치 |
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| KR102592276B1 (ko) | 2016-07-15 | 2023-10-24 | 삼성디스플레이 주식회사 | 발광장치 및 그의 제조방법 |
| KR102568252B1 (ko) | 2016-07-21 | 2023-08-22 | 삼성디스플레이 주식회사 | 발광 장치 및 그의 제조방법 |
| KR102587215B1 (ko) * | 2016-12-21 | 2023-10-12 | 삼성디스플레이 주식회사 | 발광 장치 및 이를 구비한 표시 장치 |
| KR102503172B1 (ko) * | 2018-02-13 | 2023-02-27 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR102817808B1 (ko) * | 2019-10-15 | 2025-06-10 | 삼성디스플레이 주식회사 | 표시 장치 |
| KR102839567B1 (ko) | 2020-05-29 | 2025-07-29 | 삼성디스플레이 주식회사 | 표시 장치 |
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- 2022-06-08 KR KR1020220069790A patent/KR20230169542A/ko active Pending
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- 2023-06-07 EP EP23820090.1A patent/EP4525046A4/en active Pending
- 2023-06-07 CN CN202380044502.1A patent/CN119366283A/zh active Pending
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| CN119366283A (zh) | 2025-01-24 |
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