WO2021002538A1 - Panneau d'affichage - Google Patents

Panneau d'affichage Download PDF

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Publication number
WO2021002538A1
WO2021002538A1 PCT/KR2019/013881 KR2019013881W WO2021002538A1 WO 2021002538 A1 WO2021002538 A1 WO 2021002538A1 KR 2019013881 W KR2019013881 W KR 2019013881W WO 2021002538 A1 WO2021002538 A1 WO 2021002538A1
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WIPO (PCT)
Prior art keywords
color
width
control layer
pixel
color control
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PCT/KR2019/013881
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English (en)
Korean (ko)
Inventor
김정기
김장일
안재헌
윤여건
이명종
홍석준
Original Assignee
삼성디스플레이 주식회사
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Publication of WO2021002538A1 publication Critical patent/WO2021002538A1/fr

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/871—Self-supporting sealing arrangements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers

Definitions

  • the present invention relates to a display panel, and more particularly, to a display panel including a plurality of stacked structures.
  • the display panel includes a transmissive display panel that selectively transmits source light generated from a light source, and an emissive display panel that generates source light from the display panel itself.
  • the display panel may include different types of color control layers according to pixels to generate a color image.
  • the color control layer may transmit only a partial wavelength range of the source light or may convert the color of the source light. Some of the color control layers may change the characteristics of light without changing the color of the source light.
  • An object of the present invention is to provide a display panel in which numerical measurements of a laminated structure are easily measured.
  • the display panel according to the exemplary embodiment of the present invention includes a lower display substrate including a light emitting device generating source light, first, second, and third pixel regions arranged in a first direction, and the first, second, and third pixel regions. And an upper display substrate including a peripheral area adjacent to the pixel area.
  • the upper display substrate may include a base substrate, first, second, and third pixels disposed on a lower surface of the base substrate, overlapping the peripheral region, and corresponding to the first, second, and third pixel regions, respectively.
  • a first divided pattern having an opening defined, first, second, and third color filters disposed on the lower surface of the base substrate and overlapping the first, second, and third pixel regions, respectively, and the first And first, second, and third color control layers respectively disposed on the second and third color filters, respectively.
  • the first color filter may have a third width in the first direction, and the third width may be greater than the first width.
  • a difference between the first width and the second width may be greater than a difference between the third width and the first width.
  • Both edges of the first portion facing in the first direction may overlap the first color filter on a plane.
  • the first color filter and the second color filter may overlap in the peripheral area, and the first color control layer and the second color control layer may be spaced apart from each other in the first direction.
  • the first color control layer and the second color control layer may further include a second divided pattern disposed in an area spaced apart in the first direction.
  • the second color control layer may include a first portion overlapping the second pixel region and having a first width in the first direction, and a first portion overlapping the peripheral region and being smaller than the first width in the first direction. It may include a second portion having a second width.
  • the third color control layer may include a first portion overlapping the third pixel area and having a first width in the first direction, and a first portion overlapping the peripheral area and smaller than the first width in the first direction. It may include a second portion having two widths.
  • Areas of the first pixel area, the second pixel area, and the third pixel area may be different from each other.
  • the second portion of the first color control layer, the second portion of the second color control layer, and the second portion of the third color control layer may be non-aligned in the first direction.
  • the first width of the first color control layer and the first width of the second color control layer may be different from each other.
  • the second width of the first color control layer and the second width of the second color control layer may be different from each other.
  • the source light is a third color light
  • the first color control layer converts the third color light into a first color light
  • the second color control layer converts the third color light into a second color light
  • the third color control layer The color control layer transmits the third color light
  • the first color filter transmits the first color light
  • the second color filter transmits the second color light
  • the third color filter transmits the third color light. Can penetrate.
  • a second division pattern disposed on the lower surface of the base substrate, overlapping the first division pattern, and defining first and second openings corresponding to at least the first and second pixel regions, respectively. have.
  • the second divided pattern may transmit the third color light and may have an integral shape with the third color filter.
  • the light emitting device includes first, second, and third light emitting devices disposed corresponding to each of the first, second, and third pixel regions, and the light emitting layers of the first, second, and third light emitting devices are It can have an integral shape.
  • the lower display substrate and each of the first, second, and third pixel regions arranged in a first direction and adjacent to the first, second, and third pixel regions each transmit light. It may include an upper display substrate including a peripheral area.
  • the upper display substrate is disposed on a base substrate and a lower surface of the base substrate, overlaps the peripheral region and the third pixel region, and has first and second openings respectively corresponding to the first and second pixel regions.
  • Each of the first, second, and third color control layers disposed correspondingly may be included.
  • the first color filter may include a first portion overlapping the first pixel area and having a first width in the first direction, and a first portion overlapping the peripheral area and smaller than the first width in the first direction. It may include a second portion having two widths.
  • the first color control layer overlaps the first pixel area and the peripheral area, the first color control layer has a third width substantially the same in the first direction, and the third width is the first It may be smaller than the width and larger than the second width.
  • a difference between the first width and the second width may be greater than a difference between the first width and the third width.
  • Both edges of the first color control layer facing in the first direction may overlap the first portion on a plane and non-overlap the second portion.
  • the display panel includes a lower display substrate including a light emitting device and a first pixel area, a second pixel area spaced apart from the first pixel area in a first direction, and the first pixel area and the first pixel area.
  • An upper display substrate including a peripheral area adjacent to the second pixel area may be included.
  • the upper display substrate may include a base substrate, a first color filter disposed on a lower surface of the base substrate, overlapping the first pixel region and the peripheral region, and disposed on the lower surface of the base substrate, and the second A second color filter overlapping the pixel region and the peripheral region and overlapping the first color filter and the peripheral region, and a quantum dot disposed on the first color filter and overlapping the first pixel region and the peripheral region Including a layer, the edge of the quantum dot layer on a first reference line that overlaps the first pixel area and is parallel to the first direction is equal to a first distance from the edge of the first color filter or the edge of the second color filter.
  • the edge of the quantum dot layer on a second reference line that is non-overlapping to the first pixel region and parallel to the first reference line has a second distance from the edge of the first color filter or the edge of the second color filter, , The second distance is greater than the first distance.
  • the numerical value of the color control layer can be accurately measured.
  • the color filter or color control layer includes a measurement portion having a relatively narrow width.
  • the edge of the measurement portion of one of the color filter and the color control layer is relatively far apart from the edge of the corresponding portion of the other. Therefore, the measuring instrument can accurately detect the edge of the measuring part of the color filter.
  • FIG. 1A is a perspective view of a display panel according to an exemplary embodiment of the present invention.
  • FIG. 1B is a cross-sectional view of a display panel according to an exemplary embodiment of the present invention.
  • FIG. 2 is a plan view of a display panel according to an exemplary embodiment of the present invention.
  • 3A is a plan view of a display area of a display panel according to an exemplary embodiment of the present invention.
  • 3B is a cross-sectional view corresponding to II′ of FIG. 3A.
  • FIG. 4A is a plan view of an upper display substrate corresponding to a display area according to an exemplary embodiment of the present invention.
  • 4B is a cross-sectional view corresponding to II-II' of FIG. 4A.
  • 4C is a cross-sectional view corresponding to III-III' of FIG. 4A.
  • 5A is a plan view of an upper display substrate corresponding to a display area according to an exemplary embodiment of the present invention.
  • 5B is a cross-sectional view corresponding to II-II' of FIG. 5A.
  • 5C is a cross-sectional view corresponding to III-III' of FIG. 5A.
  • 6A and 6B are cross-sectional views of an upper display substrate according to an exemplary embodiment of the present invention.
  • FIG. 7 is a plan view of an upper display substrate corresponding to a display area according to an exemplary embodiment of the present invention.
  • FIG. 8 is a plan view of an upper display substrate corresponding to a display area according to an exemplary embodiment of the present invention.
  • 9A is a plan view of an upper display substrate corresponding to a display area according to an exemplary embodiment of the present invention.
  • 9B is a cross-sectional view corresponding to III-III' of FIG. 9A.
  • first and second may be used to describe various components, but the components should not be limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. Singular expressions include plural expressions unless the context clearly indicates otherwise.
  • 1A is a perspective view of a display panel DP according to an exemplary embodiment of the present invention.
  • 1B is a cross-sectional view of a display panel DP according to an exemplary embodiment of the present invention.
  • 2 is a plan view of a display panel DP according to an exemplary embodiment of the present invention.
  • the display panel DP includes a liquid crystal display panel, an electrophoretic display panel, a microelectromechanical system display panel, and an electrowetting display panel.
  • electrowetting display panel and an organic light emitting display panel, and is not particularly limited.
  • the display panel DP may further include a chassis member or a molding member, and may further include a backlight unit according to the type of the display panel DP.
  • the display panel DP may include a first display substrate 100 (or a lower display substrate) and a second display substrate 200 (or an upper display substrate) facing the first display substrate 100 and spaced apart from each other.
  • a cell gap may be formed between the first display substrate 100 and the second display substrate 200.
  • the cell gap may be maintained by a sealant SLM that couples the first display substrate 100 and the second display substrate 200.
  • a gray scale display layer for generating an image may be disposed between the first display substrate 100 and the second display substrate 200.
  • the gray scale display layer may include a liquid crystal layer, an organic light emitting layer, and an electrophoretic layer according to the type of the display panel.
  • the display panel DP may display an image through the display surface DP-IS.
  • the outer surface 200 -OS of the second display substrate 200 illustrated in FIG. 1B may be defined as the display surface DP-IS.
  • the display surface DP-IS is parallel to a surface defined by the first direction axis DR1 and the second direction axis DR2.
  • the display surface DP-IS may include a display area DA and a non-display area NDA.
  • the pixel PX is disposed in the display area DA, and the pixel PX is not disposed in the non-display area NDA.
  • the non-display area NDA is defined along the edge of the display surface DP-IS.
  • the display area DA may be surrounded by the non-display area NDA.
  • the non-display area NDA may be omitted or may be disposed only on one side of the display area DA.
  • the third direction axis DR3 indicates the normal direction of the display surface DP-IS, that is, the thickness direction of the display panel DP.
  • the front surface (or upper surface) and the rear surface (or lower surface) of each of the layers or units described below are divided by a third direction axis DR3.
  • the first to third direction axes DR1, DR2, and DR3 illustrated in the present embodiment are only examples.
  • the first to third directions are defined as directions indicated by each of the first to third direction axes DR1, DR2, and DR3, and the same reference numerals are referred to.
  • a display panel DP having a flat display surface DP-IS is illustrated, but the present invention is not limited thereto.
  • the display panel DP may include a curved display surface or a three-dimensional display surface.
  • the three-dimensional display surface may include a plurality of display areas indicating different directions.
  • FIG. 2 illustrates an arrangement relationship between signal lines GL1 to GLn and DL1 to DLm and pixels PX11 to PXnm on a plane.
  • the signal lines GL1 to GLn and DL1 to DLm may include a plurality of gate lines GL1 to GLn and a plurality of data lines DL1 to DLm.
  • Each of the pixels PX11 to PXnm is connected to a corresponding gate line among the plurality of gate lines GL1 to GLn and a corresponding data line among the plurality of data lines DL1 to DLm.
  • Each of the pixels PX11 to PXnm may include a pixel driving circuit and a display device. More types of signal lines may be provided on the display panel DP according to the configuration of the pixel driving circuit of the pixels PX11 to PXnm.
  • the matrix-shaped pixels PX11 to PXnm are illustrated as an example, but are not limited thereto.
  • the pixels PX11 to PXnm may be arranged in a pentile shape.
  • the pixels PX11 to PXnm may be arranged in a diamond shape.
  • the gate driving circuit GDC may be integrated in the display panel DP through an oxide silicon gate driver circuit (OSG) or an amorphose silicon gate driver circuit (ASG) process.
  • OSG oxide silicon gate driver circuit
  • ASG amorphose silicon gate driver circuit
  • FIG. 3A is a plan view of the display area DA of the display panel DP according to an exemplary embodiment of the present invention.
  • 3B is a cross-sectional view corresponding to II′ of FIG. 3A.
  • FIG. 3A illustrates a plurality of pixel areas PXA-R, PXA-G, and PXA-B as viewed from the outer surface 200-OS of the second display substrate 200 shown in FIG. 1B.
  • Six pixel regions PXA-R, PXA-G, and PXA-B included in two pixel rows PLX are illustrated as an example.
  • the three types of pixel areas PXA-R, PXA-G, and PXA-B shown in FIG. 3A may be repeatedly disposed over the entire display area DA.
  • a peripheral area NPXA is disposed around the first to third pixel areas PXA-R, PXA-G, and PXA-B.
  • the peripheral area NPXA sets a boundary between the first to third pixel areas PXA-R, PXA-G, and PXA-B, and the first to third pixel areas PXA-R, PXA-G, It prevents color mixing between PXA-B).
  • first to third pixel regions PXA-R, PXA-G, and PXA-B having the same planar area are illustrated as examples, but are not limited thereto. At least two or more areas of the first to third pixel regions PXA-R, PXA-G, and PXA-B may be different from each other.
  • the first to third pixel regions PXA-R, PXA-G, and PXA-B having a rounded rectangular shape in a planar corner region are illustrated, but are not limited thereto.
  • the first to third pixel regions PXA-R, PXA-G, and PXA-B may have a polygonal shape of another shape such as a rhombus or a pentagon.
  • One of the first to third pixel regions PXA-R, PXA-G, and PXA-B provides a third color light corresponding to the source light, and the other provides a first color light different from the third color light, The remaining one provides a third color light and a second color light different from the first color light.
  • the third pixel area PXA-B provides a third color light.
  • the first pixel areas PXA-R provide red light
  • the second pixel areas PXA-G provide green light
  • the third pixel areas PXA-B provide blue light. can do.
  • the upper and lower display substrates 200 and 100 may form a predetermined gap GP.
  • the lower display substrate 100 includes a first base substrate BS1, a circuit element layer DP-CL disposed on the first base substrate BS1, and a circuit element layer DP-CL. ), a display device layer (DP-OLED), a display device layer (DP-OLED), and an upper insulating layer TFL.
  • the first base substrate BS1 may include a synthetic resin substrate or a glass substrate.
  • the circuit element layer DP-CL includes at least one insulating layer and a circuit element. Circuit elements include signal lines, pixel driving circuits, and the like.
  • the circuit device layer DP-CL may be formed through a process of forming an insulating layer, a semiconductor layer, and a conductive layer by coating or vapor deposition, and a patterning process of the insulating layer, semiconductor layer, and conductive layer by a photolithography process.
  • the circuit device layer DP-CL may include a buffer layer BFL, a first insulating layer 10, a second insulating layer 20, and a third insulating layer 30.
  • the buffer layer BFL, the first insulating layer 10 and the second insulating layer 20 may be an inorganic layer
  • the third insulating layer 30 may be an organic layer.
  • the 3B illustrates an arrangement relationship between the active (A-D), the source (S-D), the drain (D-D), and the gate (G-D) constituting the driving transistor T-D.
  • the active (A-D), the source (S-D), and the drain (D-D) may be regions divided according to a doping concentration or conductivity of a semiconductor pattern.
  • the display device layer DP-OLED includes a light emitting device OLED.
  • the light emitting device OLED may generate the above-described source light.
  • the light emitting device OLED includes a first electrode, a second electrode, and a light emitting layer disposed therebetween.
  • the display device layer DP-OLED may include an organic light emitting diode as a light emitting device.
  • the display device layer DP-OLED includes a pixel defining layer PDL.
  • the pixel defining layer PDL may be an organic layer.
  • the first electrode AE is disposed on the third insulating layer 30.
  • the first electrode AE is directly or indirectly connected to the driving transistor T-D, and a connection structure between the first electrode AE and the driving transistor T-D is not shown in FIG. 3B.
  • An opening OP is defined in the pixel defining layer PDL.
  • the opening OP of the pixel defining layer PDL exposes at least a portion of the first electrode AE.
  • the hole control layer HCL, the emission layer EML, and the electron control layer ECL may be commonly disposed in the pixel regions PXA-G and the peripheral region NPXA.
  • the hole control layer HCL, the emission layer EML, and the electronic control layer ECL may be commonly disposed in the first to third pixel regions (PXA-R, PXA-G, PXA-B, see FIG. 3A). have.
  • the hole control layer HCL may include a hole transport layer, and may further include a hole injection layer.
  • the emission layer EML may generate blue light. Blue light may include a wavelength of 410 nm to 480 nm. The emission spectrum of blue light may have a maximum peak within 440 nm to 460 nm.
  • the electron control layer ECL may include an electron transport layer and may further include an electron injection layer.
  • the emission layer EML may be commonly disposed in the first to third pixel regions PXA-R, PXA-G, and PXA-B, or may be independently disposed. Independently disposed means that the emission layer EML is separated for each of the first to third pixel regions PXA-R, PXA-G, and PXA-B.
  • the second electrode CE is disposed on the electronic control layer ECL. The second electrode CE may be commonly disposed in the first to third pixel regions PXA-R, PXA-G, and PXA-B.
  • An upper insulating layer TFL to protect the second electrode CE may be disposed on the second electrode CE.
  • the upper insulating layer TFL may include an organic material or an inorganic material.
  • the upper insulating layer TFL may have a multilayer structure in which an inorganic layer/organic layer is repeated.
  • the upper insulating layer TFL may have a sealing structure of an inorganic layer/organic layer/inorganic layer.
  • the upper insulating layer TFL may further include a refractive index control layer for improving light emission efficiency.
  • the lower display substrate 100 may include first, second, and third display devices corresponding to the first to third pixel regions PXA-R, PXA-G, and PXA-B shown in FIG. 3A. have.
  • the stacked structures of the first, second, and third display devices are the same, and may have a stacked structure of the light emitting device (OLED) shown in FIG. 3B.
  • the upper display substrate 200 includes a second base substrate BS2, a division pattern BM disposed on a lower surface of the second base substrate BS2, a color filter CF-G, and And a color control layer (CCF-G).
  • the upper display substrate 200 may further include a plurality of encapsulation layers ENL1 and ENL2.
  • the second base substrate BS2 may include a synthetic resin substrate or a glass substrate.
  • the division pattern BM is disposed on the lower surface of the second base substrate BS2.
  • the division pattern BM is disposed in the peripheral area NPXA.
  • openings BM-OP corresponding to each of the first to third pixel regions PXA-R, PXA-G, and PXA-B are defined in the divided pattern BM.
  • the pixel regions PXA-G are defined to correspond to the openings BM-OP of the division pattern BM.
  • the divided pattern BM is a pattern having a black color and may be a black matrix.
  • the segmentation pattern BM may include a black coloring agent.
  • the black component may include a black dye and a black pigment.
  • the black component may include carbon black, a metal such as chromium or an oxide thereof.
  • the openings BM-OP formed in the divided pattern BM may be defined differently according to the optical properties of the divided pattern BM. Openings BM-OP corresponding to each of the first to third pixel regions PXA-R, PXA-G, and PXA-B in the divided pattern BM that mostly blocks all wavelength bands of visible light as in this embodiment. Is defined. However, a smaller number of openings BM-OP may be defined in the division pattern BM that transmits any one or more of specific color light (eg, red light, green light, or blue light).
  • specific color light eg, red light, green light, or blue light
  • the color filter CF-G is disposed on the lower surface of the base substrate BS2.
  • the color filter (CF-G) lowers the reflectance of external light.
  • Color filter (CF-G) Transmits light in a specific wavelength range and blocks light outside the corresponding wavelength range.
  • the color filter (CF-G) includes a base resin and a dye and/or pigment dispersed in the base resin.
  • the base resin is a medium in which dyes and/or pigments are dispersed, and may be made of various resin compositions that may be generally referred to as binders.
  • the color filter CF-G overlaps the pixel area PXA-G.
  • the edge region of the color filter CF-G may overlap the peripheral region NPXA.
  • a portion of the divided pattern BM may be disposed between the color filter CF-G and the lower surface of the base substrate BS2.
  • a first encapsulation layer ENL1 is disposed under the color filter CF-G.
  • the first encapsulation layer ENL1 seals the color filter CF-G.
  • the first encapsulation layer ENL1 may be commonly disposed in the first to third pixel regions PXA-R, PXA-G, and PXA-B.
  • the first encapsulation layer ENL1 may include an inorganic layer (defined as a first inorganic layer).
  • the first encapsulation layer ENL1 may include any one of silicon oxide, silicon nitride, or silicon oxy nitride.
  • the first encapsulation layer ENL1 may further include an organic layer providing a flat lower surface.
  • the color control layer CCF-G is disposed on the lower surface of the first encapsulation layer ENL1 to correspond to the color filter CF-G.
  • the color control layer CCF-G may generate light of a different color after absorbing the source light generated by the light emitting device OLED.
  • the color control layer CCF-G may transmit and scatter some of the incident source light.
  • the color control layer CCF-G may include a base resin and quantum dots mixed (or dispersed) in the base resin.
  • the color control layer CCF-G may be defined as a quantum dot layer.
  • the base resin is a medium in which quantum dots are dispersed, and may be made of various resin compositions that may be generally referred to as binders. However, it is not limited thereto, and in the present specification, any medium capable of distributing and distributing quantum dots may be referred to as a base resin regardless of its name, additional other functions, and constituent materials.
  • the base resin may be a polymer resin.
  • the base resin may be an acrylic resin, a urethane resin, a silicone resin, or an epoxy resin.
  • the base resin may be a transparent resin.
  • Quantum dots may be particles that convert the wavelength of incident light.
  • Quantum dots are materials with a crystal structure of several nanometers, composed of hundreds to thousands of atoms, and exhibit a quantum confinement effect that increases the energy band gap due to their small size.
  • the quantum dots absorb the light and become excited, and fall to the ground state while emitting light of a specific wavelength.
  • the emitted wavelength light has a value corresponding to the band gap.
  • the quantum dots may be selected from a group II-VI compound, a group III-V compound, a group IV-VI compound, a group IV element, a group IV compound, and combinations thereof.
  • Group II-VI compounds are CdSe, CdTe, CdS, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, and a binary compound selected from the group consisting of mixtures thereof, AgInS, CdSeS, CdSeTe, CdSTe , ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnTe, and a mixture of three elements selected from the group consisting of MgZnTe , CdZnSeS, CdZnSeTe, CdZnSTe, CdHgS
  • the I-III-VI group compound is a three-element compound selected from the group consisting of AgInS 2 , CuInS 2 , AgGaS 2 , CuGaS 2 and mixtures thereof, or AgInGaS 2 , It may be selected from quaternary element compounds such as CuInGaS 2 .
  • the group III-V compound is a binary compound selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; A ternary compound selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InAlP, InNP, InNAs, InNSb, InPAs, InPSb, and mixtures thereof; And GaAlNP GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof. . Meanwhile, the Group III-V compound may further include a Group II metal
  • Group IV-VI compounds include a binary compound selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; A three-element compound selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof; And SnPbSSe, SnPbSeTe, SnPbSTe, and may be selected from the group consisting of a quaternary element compound selected from the group consisting of a mixture thereof.
  • the group IV element may be selected from the group consisting of Si, Ge, and mixtures thereof.
  • the group IV compound may be a binary compound selected from the group consisting of SiC, SiGe, and mixtures thereof.
  • the two-element compound, the three-element compound, or the quaternary element compound may be present in the particle at a uniform concentration, or may be present in the same particle by partially dividing the concentration distribution into different states.
  • the quantum dots may have a core-shell structure including a core and a shell surrounding the core.
  • one quantum dot may have a core/shell structure surrounding another quantum dot.
  • the interface between the core and the shell may have a concentration gradient in which the concentration of an element present in the shell decreases toward the core.
  • Quantum dots may be particles having a nanometer scale size. Quantum dots may have a full width of half maximum (FWHM) of the emission wavelength spectrum of about 45 nm or less, preferably about 40 nm or less, more preferably about 30 nm or less, and improve color purity or color reproducibility in this range. I can. In addition, since light emitted through these quantum dots is emitted in all directions, a wide viewing angle may be improved.
  • FWHM full width of half maximum
  • the shapes of the quantum dots are those that are generally used in the art and are not particularly limited, but more specifically, spherical, pyramidal, multi-arm, or cubic nanoparticles, nanotubes, It can be used in the form of nanowires, nanofibers, and nanoplatelet particles.
  • the quantum dots can control the color of light emitted according to the particle size, and accordingly, the quantum dots can have various emission colors such as red light, green light, and blue light.
  • the first to third color control layers CCF-R, CCF-G, and CCF-B are spaced apart from each other in the first direction DR1.
  • a second encapsulation layer ENL2 is disposed under the color control layers CCF-R, CCF-G, and CCF-B.
  • the second encapsulation layer ENL2 may be commonly disposed in the pixel regions PXA-R, PXA-G, and PXA-B.
  • the second encapsulation layer ENL2 may contact the first encapsulation layer ENL1.
  • the first to third color control layers CCF-R, CCF-G, and CCF-B may be sealed by the second encapsulation layer ENL2.
  • the second encapsulation layer ENL2 may include an inorganic layer in contact with the first encapsulation layer ENL1.
  • the inorganic layer may include any one of silicon oxide, silicon nitride, or silicon oxy nitride.
  • the second encapsulation layer ENL2 may further include an organic layer disposed on the inorganic layer (defined as the second inorganic layer). The organic layer can provide a flat bottom surface.
  • the first encapsulation layer ENL1 may include silicon oxide
  • the second encapsulation layer ENL2 may include silicon nitride.
  • 4A is a plan view of an upper display substrate 200 corresponding to the display area DA according to an exemplary embodiment of the present invention.
  • 4B is a cross-sectional view corresponding to II-II' of FIG. 4A.
  • 4C is a cross-sectional view corresponding to III-III' of FIG. 4A.
  • Edges RE2, GE2, BE2 of (RE1, GE1, BE1) and the first to third color control layers (CCF-R, CCF-G, and CCF-B) are illustrated.
  • first to third color filters CF-R and CF-G correspond to the first to third pixel regions PXA-R, PXA-G, and PXA-B. , CF-B) is placed.
  • the first to third color filters CF-R, CF-G, and CF-B include pigments and/or dyes that absorb different wavelength bands.
  • the first color filter CF-R may be a red color filter
  • the second color filter CF-G may be a green color filter
  • the third color filter CF-B may be a blue color filter.
  • CCF-B is deployed.
  • the first color control layer CCF-R absorbs blue light to generate red light
  • the second color control layer CCF-G absorbs blue light to generate green light. That is, the first color control layer CCF-R and the second color control layer CCF-G may include different quantum dots.
  • the third color control layer CCF-B may transmit blue light.
  • the first to third color control layers CCF-R, CCF-G, and CCF-B may further include scattering particles.
  • the scattering particles may be titanium oxide (TiO2) or silica-based nanoparticles.
  • Each of the first to third color control layers CCF-R, CCF-G, and CCF-B has a shape extending in the second direction DR2.
  • the first to third color control layers CCF-R, CCF-G, and CCF-B are arranged in units of pixel columns PXC.
  • One color control layer may overlap a plurality of pixel regions PXA-R, PXA-G, and PXA-B disposed in different pixel rows PXL.
  • the first to third color control layers CCF-R, CCF-G, and CCF- on the first to third color filters CF-R, CF-G, and CF-B Since B) is stacked and the peripheral region NPXA is disposed at all of their edges, there is a problem in that it is difficult to distinguish the boundary between the color filter and/or the color control layer. That is, the edges RE1, GE1 and BE1 of the first to third color filters CF-R, CF-G, and CF-B and the first to third color control layers CCF-R, CCF-G, It is difficult to distinguish the edges (RE2, GE2, BE2) of CCF-B). Specifying the color filter or color control layer is necessary for numerical measurement of the color filter or color control layer. Numerical measurement is required to check whether the manufactured color filter or color control layer is formed with a degree of error compared to the design value.
  • At least one of the color filter and the color control layer may include a plurality of portions having different widths.
  • first to third color control layers (CCF-R, CCF-G, and CCF-B) having portions having different widths are illustrated as an example.
  • the color control layer overlaps the corresponding pixel region CCF-R and has a first width W1 in the first direction DR1.
  • a second portion P2 overlapping the first portion P1 and the peripheral area NPXA and having a second width W2 smaller than the first width W1 in the first direction DR1 is included.
  • each of the first to third color control layers CCF-R, CCF-G, and CCF-B includes a first portion P1 and a second portion P2.
  • the present invention is not limited thereto. Any one color control layer may not include the second portion P2.
  • the second portion P2 of the first to third color control layers CCF-R, CCF-G, and CCF-B is illustrated as being aligned along the first direction DR1, but is not limited thereto.
  • the second portion P2 of the first and third color control layers CCF-R and CCF-B is aligned along the first direction DR1, and the second color control layer CCF-G
  • the second part P2 of may be non-arranged.
  • the second portion P2 of the first and third color control layers CCF-R and CCF-B is disposed on one side of the pixel row PXL, and the second portion P2 is disposed on the other side of the pixel row PXL.
  • the second part P2 of the color control layer CCF-G may be disposed.
  • One side and the other side are set based on the second direction DR2.
  • the color filter has a third width W3 in the first direction DR1, and the third width W3 is less than the first width W1. It can be big.
  • the width of the color filters is larger than the width of the color control layer.
  • the edge of the color control layer overlaps the corresponding color filter.
  • both edges RE2 of the first color control layer CCF-R overlap the first color filter CF-R.
  • the difference between the first width W1 and the second width W2 is greater than the difference between the third width W3 and the first width W1. This is from the area where the edge RE2 of the first part P1, the edge RE1 of the first color filter CF-R, and the edge GE1 of the second color filter CF-G are concentrated. It is to separate the edge (RE2) of P2) far apart.
  • the second part P2 corresponds to the measurement area.
  • the portion corresponding to the second portion P2 of the edge RE2 of the first color control layer CCF-R is farther from the edge GE1 of the closest color filter compared to the portion corresponding to the first portion P1. Spaced apart.
  • the edge of the color filter closest to the edge RE2 of the first color control layer CCF-R is the second color filter CF-G. It is the edge of (GE1).
  • the edge RE2 of the first part P1 and the edge GE1 of the second color filter CF-G When the distance between the edge RE2 of the first part P1 and the edge GE1 of the second color filter CF-G is the first distance D1, the edge RE2 of the second part P2 The distance between and the edge GE1 of the second color filter CF-G may be defined as the second distance D2. Since the second distance D2 is larger than the first distance D1, the first color control layer CCF-R can be accurately specified in the measurement step to measure the value of the first color control layer CCF-R. .
  • the first portion P1 and the second portion P2 may be alternately disposed along the second direction DR2.
  • the present invention is not limited thereto, and the measurement area may be irregularly disposed, and may be disposed only in a specific area of the first color control layer CCF-R.
  • 5A is a plan view of an upper display substrate 200 corresponding to the display area DA according to an exemplary embodiment of the present invention.
  • 5B is a cross-sectional view corresponding to II-II' of FIG. 5A.
  • 5C is a cross-sectional view corresponding to III-III' of FIG. 5A.
  • a detailed description of the same configuration as that described with reference to FIGS. 1A to 4C will be omitted.
  • the upper display substrate 200 may further include a partition partition wall (BMW). Separates the partition partition (BMW) pixel column (PLC).
  • the division partition (BMW) is different from the division pattern (BM) shown in FIGS. 3A to 4B in a position arranged in cross section, and its function may be partially different due to a different planar shape, but to prevent color mixing, the division pattern ( BM) may be a kind of.
  • Slits SLT are defined in spaced regions of the first to third color control layers CCF-R, CCF-G, and CCF-B.
  • a part of the second encapsulation layer ENL2 is disposed in the slit SLT.
  • the partition partition wall BMW may be disposed on a portion of the second encapsulation layer ENL2 corresponding to the slit SLT.
  • the partition partition wall (BMW) may contain a black component.
  • 6A and 6B are plan views of an upper display substrate 200 according to an exemplary embodiment of the present invention. Hereinafter, a detailed description of the same configuration as the configuration described with reference to FIGS. 1A to 5C will be omitted. 6A and 6B correspond to FIGS. 4B and 4C, respectively.
  • the display panel DP may include a first divided pattern BM-1 and a second divided pattern BM-2.
  • the first divided pattern BM-1 may include substantially the same material as the third color filter CF-B of FIGS. 3A to 4C. Accordingly, the first divided pattern BM-1 may be defined as a color pattern.
  • the second divided pattern BM-2 may include substantially the same material as the divided pattern BM of FIGS. 3A to 4C.
  • the first divided pattern BM-1 may be directly formed on one surface of the second base substrate BS2.
  • One surface of the second base substrate BS2 illustrated in FIGS. 6A and 6B may be a lower surface of the second base substrate BS2 illustrated in FIG. 3B.
  • Openings BM1-OP corresponding to each of the first and second pixel regions PXA-R and PXA-G are defined in the first divided pattern BM-1.
  • the first divided pattern BM-1 may have an integral shape with the third color filter CF-B.
  • the stacking order of the first divided pattern BM-1 and the second divided pattern BM-2 may be changed.
  • the second divided pattern BM-2 may be disposed between the first divided pattern BM-1 and the second base substrate BS2.
  • openings BM2-OP corresponding to each of the first to third pixel regions PXA-R, PXA-G, and PXA-B are defined.
  • the openings BM2-OP of the second partition pattern BM-2 corresponding to the first and second pixel regions PXA-R and PXA-G are formed in the first and second pixel regions PXA-R, It may have a larger area than the openings BM1-OP of the first divided pattern BM-1 corresponding to the PXA-G.
  • One of the plurality of openings BM2-OP of the second divided pattern BM-2 may define the third pixel area PXA-B.
  • FIG. 7 is a plan view of an upper display substrate 200 corresponding to the display area DA according to an exemplary embodiment of the present invention.
  • 8 is a plan view of an upper display substrate corresponding to a display area according to an exemplary embodiment of the present invention.
  • first to third pixel regions PXA-R, PXA-G, and PXA-B having different planar areas are illustrated.
  • the pixel area PXA-R providing red light may have the largest area
  • the pixel area PXA-B providing blue light may have the smallest area.
  • the second portion P2 of the first to third color control layers CCF-R, CCF-G, and CCF-B may be non-aligned along the first direction DR1.
  • An area of the peripheral area NPXA adjacent to the first to third pixel areas PXA-R, PXA-G, and PXA-B may vary according to the pixel area.
  • the shape and area of the second portion P2 of the first to third color control layers CCF-R, CCF-G, and CCF-B may be different.
  • the first portions P1 of the first to third color control layers CCF-R, CCF-G, and CCF-B may be non-aligned in the first direction DR1.
  • the first portion P1 of the second color control layer CCF-G is disposed in a diagonal direction of the first portion P1 of the first color control layer CCF-R, and the third color control layer CCF-
  • the first portion P1 of B) is disposed in the oblique direction of the first portion P1 of the first color control layer CCF-R.
  • the oblique direction is a direction crossing the first direction DR1 and the second direction DR2.
  • the first to third pixel regions PXA-R, PXA-G, and PXA-B have different widths in the first direction DR1, and the lengths in the second direction DR2 are different from each other.
  • the first width W1 of the first color control layer CCF-R is the first width W1-1 of the second color control layer CCF-G and the third color control layer CCF-B It may be different from the first width W1-2 of.
  • the first width W1-2 of the third color control layer CCF-B may be the smallest.
  • the second width W2 of the first color control layer CCF-R and the second width W2-1 of the second color control layer CCF-G may be different from each other.
  • 9A is a plan view of an upper display substrate 200 corresponding to the display area DA according to an exemplary embodiment of the present invention.
  • 9B is a cross-sectional view corresponding to III-III' of FIG. 9A.
  • a detailed description of the same configuration as the configuration described with reference to FIGS. 1A to 8 will be omitted.
  • the first to third color filters CF-R, CF-G, and CF-B correspond to the pixel regions CCF-
  • Each of the first to third color control layers CCF-R, CCF-G, and CCF-B may have a uniform width.
  • the planar shape of the color control layer and the color filter is explained based on the first color control layer (CCF-R) and the first color filter (CF-R), the first color control facing in the first direction DR1 Both edges RE2 of the layer CCF-R may overlap the first portion P10 on a plane and non-overlap the second portion P20.
  • the third color filter CF-B is not shown in FIG. 9A.
  • the color control layer (CCF-R, CCF-G, CCF-B) has a third width W30 in the first direction DR1 ,
  • the third width W30 may be smaller than the first width W10 and larger than the second width W20.
  • the difference between the first width W10 and the second width W20 may be greater than the difference between the first width W10 and the third width W30.
  • the distance between the second part P20 of the first color filter CF-R and the edge RE2 of the first color control layer CCF-R is the second It may be defined as the distance D20. Since the second distance D20 is larger than the first distance D10, the first color control layer CCF-R can be accurately specified in the measurement step to measure the value of the first color control layer CCF-R. . In addition, the value of the first color filter CF-R may be measured by accurately specifying the second part P20 of the first color filter CF-R. In the corresponding region, the edge RE1 of the first color filter CF-R, the edge GE1 of the second color filter CF-G, and the edge RE2 of the first color control layer CCF-R are Because they are far apart from each other.
  • the present invention since the numerical value of the color control layer can be accurately measured, the defective rate can be checked. By checking the defect rate and modifying the manufacturing process, the productivity of the display panel can be improved. Therefore, the present invention can be recognized for industrial applicability.

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Abstract

L'invention concerne un substrat d'affichage supérieur comprenant : un substrat de base; un premier motif de séparation qui est disposé sur une surface inférieure du substrat de base et chevauche une région environnante, et dans laquelle des première, deuxième et troisième ouvertures correspondant respectivement à des première, deuxième et troisième régions de pixels sont définies; des premier, deuxième et troisième filtres de couleur disposés sur la surface inférieure du substrat de base et chevauchant les première, deuxième et troisième régions de pixels, respectivement; et des première, deuxième et troisième couches de commande de couleur disposées sur les premier, deuxième et troisième filtres de couleur tout en correspondant respectivement aux premier, deuxième et troisième filtres de couleur. La première couche de commande de couleur comprend une première partie chevauchant la première région de pixel et ayant une première largeur dans une première direction, et une seconde partie chevauchant la région environnante et ayant une seconde largeur plus étroite que la première largeur dans la première direction.
PCT/KR2019/013881 2019-07-04 2019-10-22 Panneau d'affichage WO2021002538A1 (fr)

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Citations (5)

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US20120287381A1 (en) * 2006-07-06 2012-11-15 Intematix Corporation Photoluminescence color display
KR101785642B1 (ko) * 2010-11-05 2017-10-16 엘지이노텍 주식회사 컬러필터 및 이를 이용한 디스플레이 장치
KR20180018945A (ko) * 2016-08-11 2018-02-22 삼성디스플레이 주식회사 컬러 필터 및 이를 포함하는 표시 장치
KR20180035286A (ko) * 2016-09-28 2018-04-06 삼성디스플레이 주식회사 컬러 필터 및 이를 포함하는 표시 장치
KR101958721B1 (ko) * 2017-11-28 2019-03-15 한국생산기술연구원 색변환 패널, 그를 포함하는 표시 장치 및 그의 제조방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120287381A1 (en) * 2006-07-06 2012-11-15 Intematix Corporation Photoluminescence color display
KR101785642B1 (ko) * 2010-11-05 2017-10-16 엘지이노텍 주식회사 컬러필터 및 이를 이용한 디스플레이 장치
KR20180018945A (ko) * 2016-08-11 2018-02-22 삼성디스플레이 주식회사 컬러 필터 및 이를 포함하는 표시 장치
KR20180035286A (ko) * 2016-09-28 2018-04-06 삼성디스플레이 주식회사 컬러 필터 및 이를 포함하는 표시 장치
KR101958721B1 (ko) * 2017-11-28 2019-03-15 한국생산기술연구원 색변환 패널, 그를 포함하는 표시 장치 및 그의 제조방법

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