WO2017024768A1 - 显示基板和显示装置 - Google Patents

显示基板和显示装置 Download PDF

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Publication number
WO2017024768A1
WO2017024768A1 PCT/CN2016/070858 CN2016070858W WO2017024768A1 WO 2017024768 A1 WO2017024768 A1 WO 2017024768A1 CN 2016070858 W CN2016070858 W CN 2016070858W WO 2017024768 A1 WO2017024768 A1 WO 2017024768A1
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Prior art keywords
layer
color
display
brightness
interference
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PCT/CN2016/070858
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English (en)
French (fr)
Inventor
许军
吴小君
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京东方科技集团股份有限公司
合肥鑫晟光电科技有限公司
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Priority to US15/103,462 priority Critical patent/US10452173B2/en
Publication of WO2017024768A1 publication Critical patent/WO2017024768A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134336—Matrix
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
    • 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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks
    • 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
    • H10K59/10—OLED displays
    • H10K59/17—Passive-matrix OLED displays
    • H10K59/173—Passive-matrix OLED displays comprising banks or shadow masks
    • 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
    • H10K59/40—OLEDs integrated with touch screens
    • 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
    • H10K59/8723—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/15—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 periodic
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material

Definitions

  • the present invention belongs to the field of display technologies, and in particular, to a display substrate and a display device.
  • the display device plays an increasingly important role as a device for displaying information.
  • the most common display method on the market today is flat panel display, which includes liquid crystal display and OLED display.
  • the flat panel display device has a plurality of sub-pixels, and the sub-pixels are spaced apart from each other to form a grid structure.
  • a black matrix is usually provided at a position corresponding to the grid structure.
  • flat panel display devices are widely used in various applications such as computers, televisions, and mobile terminal devices because of their excellent performances such as thinness, light weight, and low power consumption.
  • the touch screen can be independently produced and then attached to the display screen, or can be integrated with the display screen.
  • the touch screen usually includes a plurality of dark touch electrodes (ie, metal meshes) disposed in a crossover manner, and the touch electrodes generally correspond to the sub-sets in the display screen. In the pixel gap, so as not to affect the display effect.
  • the touch electrodes and the sub-pixel gaps may not be completely overlapped, and the plurality of black matrix grid structures in the display screen and the plurality of metal grid structures in the touch screen are very It is easy to interfere with each other to form moiré fringe.
  • Moiré has always been a major optical problem that plagues the display field, and is a key issue in grid structure applications.
  • the solution for moiré basically eliminates the moiré by reducing the stripe period.
  • the object of the present invention is to provide a display substrate and a display device having less moiré or no moiré, and having a better display effect, in view of the above-mentioned deficiencies in the prior art.
  • Some embodiments of the present invention provide a display substrate including a first structure and a second structure stacked in a stack, the opposite sides of the first structure and the second structure respectively having the same A periodically arranged mesh structure, wherein a color of the mesh structure of the first structure is different from a brightness of a color of the mesh structure in the second structure.
  • the brightness of the color of the grid structure of the first structure is darkness
  • the brightness of the color of the grid structure of the second structure is lightness
  • the brightness of the color of the material forming the mesh structure of the first structure is darkness
  • the brightness of the color of the material forming the mesh structure of the second structure is bright brightness
  • the first structure is a touch screen
  • the grid structure in the touch screen is a touch electrode that is vertically disposed
  • the second structure is a display screen, the display screen includes a plurality of sub-pixels arranged in a matrix, and the grid structure in the display screen is a pixel spacing layer disposed between the sub-pixels, the pixel spacing layer At least a interference layer formed of a bright color material is included.
  • the display screen is a liquid crystal display panel
  • the liquid crystal display panel includes a color film substrate and an array substrate disposed opposite to each other, and the color film substrate includes a plurality of color film layers arranged at intervals and arranged in a color cycle;
  • the pixel spacer layer is disposed between adjacent color film layers in the color filter substrate, and the pixel spacer layer further includes a black matrix layer formed of a black resin material, the black matrix layer and the erase layer.
  • the interference layers have the same shape and are in the forward projection direction Completely overlapping.
  • the interference suppression layer is formed over the black matrix using a patterning process such that the interference interference layer is further away from the array substrate relative to the black matrix layer.
  • the display screen is an OLED display screen, and the OLED display screen includes a plurality of OLEDs arranged at intervals;
  • the pixel spacer layer is disposed between adjacent OLEDs, the pixel spacer layer further includes a pixel defining layer formed of a black resin material, the pixel defining layer and the interference eliminating layer having the same shape and being positive The projection direction completely overlaps.
  • the interference interference layer is formed over the pixel defining layer by a patterning process such that the interference interference layer is closer to the touch screen relative to the pixel defining layer.
  • the interference suppression layer is formed of a white resin material.
  • the mesh structure of the first structure is formed using a metallic material of darkness.
  • Some embodiments of the present invention provide a display device including the display substrate described above.
  • the invention has the beneficial effects that the display substrate forms a grid structure having the same periodic arrangement by using materials of different brightnesses respectively, thereby weakening or eliminating moiré.
  • the manner in which the moiré is eliminated in the display substrate is simpler and more versatile than the manner in which the stripe period is reduced in the prior art.
  • FIG. 1 is a schematic structural view of a display substrate in a second embodiment of the present invention.
  • Figure 2 is a partial enlarged view of the color filter substrate of Figure 1;
  • Figure 3 is a schematic diagram of a lightness color scale
  • 4A-4C are schematic diagrams showing moiré generated when a grid structure in a touch screen and a display screen is formed using materials of different brightness contrast colors.
  • 2-display screen 21-color film substrate; 211-first substrate; 212-color film layer; 213-interference layer; 214-black matrix layer; 22-array substrate; 221-second substrate; 222-data line; 223-thin film transistor; 23-liquid crystal molecule.
  • Moiré is an interference fringe that occurs on an object having a certain interval, which is essentially a visual phenomenon.
  • Moiré is the resolution of the periodic structure of the human eye.
  • the human eye's perception of Moiré is related to two objective factors, namely the period of the stripe and the brightness contrast of the stripe. When the contrast of the stripe is very large. Even if the fringe period is large enough, the human eye may not be able to distinguish the moiré.
  • the present invention breaks through the idea of the conventional method of the prior art, and adopts a different method from the current reduction of the stripe period from the consideration of the visual effect of entering the human eye. In particular, the present invention achieves the goal of reducing or eliminating moiré by reducing the contrast of the stripes.
  • the embodiment provides a display substrate including a first structure and a second structure which are stacked, and opposite sides of the first structure and the second structure (for example, the side where the touch electrode 11 is located in FIG. 1 and the interference elimination
  • the side on which the layer 213 is located includes a grid structure having the same periodic arrangement, respectively, wherein the color of the grid structure of the first structure is different from the brightness of the color of the grid structure in the second structure.
  • brightness is one of the three elements of color (the three elements of color are: brightness, purity, and hue), which refers to the degree of color shading. In general, the brightness of black is the lowest, and the brightness of white is the highest.
  • the contrast of brightness is the contrast of the degree of light and darkness of color, also known as the contrast of black and white of color.
  • Brightness contrast is the most important factor in color composition.
  • the relationship between color and space is mainly based on the contrast of color; only the contrast of the hue is not contrasted, the outline shape of the pattern is difficult to recognize; only the contrast of purity and no brightness
  • the contour shape of the pattern is more difficult to recognize.
  • the invention utilizes the important role of the brightness contrast to outline the contour shape, and utilizes it in the display substrate, thereby eliminating The interference between the grid structures having the same periodic arrangement brings a better display effect to the human eye.
  • the brightness of the color of the mesh structure of the first structure is darkness
  • the brightness of the color of the mesh structure of the second structure is bright brightness.
  • the lightness of the color of the material forming the mesh structure of the first structure is dark lightness
  • the brightness of the color of the material forming the mesh structure of the second structure is bright lightness.
  • the display substrate in this embodiment forms a mesh structure having the same periodic arrangement in the touch screen and the display screen by using materials of different brightnesses respectively, thereby weakening or eliminating moiré.
  • the manner in which moiré is eliminated in the display substrate is simpler and more versatile than in the prior art in which the stripe period is reduced.
  • This embodiment provides a display substrate having less moiré or no moiré and having a better display effect.
  • the first structure is the touch screen 1 , wherein the grid structure is a touch electrode 11 disposed vertically;
  • the second structure is a display screen 2.
  • the display screen 2 includes a plurality of sub-pixels arranged in a matrix, wherein the grid structure is a pixel spacer layer disposed between each sub-pixel, and the pixel spacer layer includes at least a blank formed by a bright color material. Interference layer 213.
  • the grid structure of the touch electrodes 11 in the touch screen 1 and the grid structure in the display screen 2 have the same shape. Further, generation of moiré is attenuated or eliminated by forming the interference suppression layer 213 in the pixel spacer layer of the display screen 2.
  • the display screen 2 is a liquid crystal display screen
  • the liquid crystal display panel includes a color film substrate 21 and an array substrate 22 disposed opposite to each other.
  • the color filter substrate 21 includes a plurality of color film layers 212 arranged at intervals and arranged in a color cycle. (For example, in FIG.
  • a plurality of color film layers 212 are arranged in a horizontal direction instead of being arranged in a vertical direction), and a plurality of color film layers 212 are disposed on a side of the first substrate 211 adjacent to the array substrate 22;
  • the pixel spacer layer is disposed between the adjacent color film layers 212 in the color filter substrate 21, and the pixel spacer layer further includes a black matrix layer 214 formed of a black resin material, and the black matrix layer 214 and the interference interference layer 213 have the same shape and Completely overlap in the forward projection direction.
  • the area of the array substrate 22 corresponding to the pixel spacer layer is correspondingly provided with intersecting gate lines (not specifically shown in FIG.
  • the black matrix layer 214 is formed on the basis of forming the interference suppression layer 213, which is advantageous for ensuring the light shielding property between adjacent sub-pixels in the liquid crystal display panel, thereby ensuring display quality.
  • the interference suppression layer 213 is formed over the black matrix layer 214 by a patterning process, and the interference interference layer 213 is further away from the array substrate than the black matrix layer 214 (when the image is displayed, the array substrate is closer to the human eye). Since the pattern of the interference interference layer 213 is identical to the pattern of the black matrix layer 214, the interference layer 213 and the black matrix layer 214 can be formed in the same patterning process using the same mask. Therefore, the formation of the interference suppression layer 213 by the patterning process does not add an additional process step, and since the process is mature and simple, a high yield can be ensured.
  • the color of lightness of zero to three degrees is called low brightness or dark color, and the color of four to six degrees is called medium brightness, and the color of seven to ten degrees is called For high brightness, that is, bright color brightness.
  • the difference in brightness between colors determines the strength of the brightness contrast.
  • the comparison below the third degree difference is also called the short-tone contrast; the contrast greater than three degrees and less than or equal to the five-degree difference is called the contrast in the brightness, which is also called the middle contrast; the contrast greater than the five-degree difference is called the contrast of the brightness, and It is called long-term contrast.
  • the color of the material forming the touch electrode 11 and the interference suppression layer 213 when the color of the material forming the touch electrode 11 and the interference suppression layer 213 is contrasted by brightness or long-term contrast, the effect of weakening or eliminating moiré is best.
  • the color brightness contrast of the material forming the touch electrode 11 and the interference suppression layer 213 can be flexibly selected, which is not limited herein.
  • the interference interference layer 213 is formed of a white resin material (or a white photoresist material), preferably a white resin material (or a white photoresist material) is doped with TiO 2 ; a grid formed by the touch electrodes 11 in the touch screen 1
  • the structure is formed using an opaque, dark-colored metal material such as copper, nano-silver, graphene, or the like.
  • the black matrix layer 214 which is originally formed of a black resin material on the side of the color filter substrate 21 is replaced with a pixel spacer layer formed of two layers of a black resin material and a white resin material, and a white resin is used.
  • the layer structure formed by the material is set closer to the touch screen 1, and the laminated structure of the pixel spacer layer (which includes the interference suppression layer 213 and the black matrix layer 214) is as shown in FIG.
  • the interference preventing layer 213 formed of the white resin material is closer to the human eye than the black matrix layer 214, and the touch electrode 11 formed of the black metal material has the largest contrast, and the effect of eliminating the moiré is the best.
  • the touch electrode 11 and the interference suppression layer 213 are formed by using different contrast ratio materials to form a visual comparison diagram of the grid structure, and the upper layer is the touch electrode 11 (in the touch screen 1).
  • the interference layer 213 (in the display screen 2) is in the lower layer.
  • the stripe gray value contrast ratio of the grid structure of the touch electrode 11 and the interference suppression layer 213 in FIG. 4A is 1:1, that is, the touch electrode 11 and the interference suppression layer 213 are formed by the same color (black);
  • FIG. 4B The stripe gray value contrast ratio of the grid structure of the touch electrode 11 and the interference suppression layer 213 is 1:2; the stripe gray value contrast ratio of the grid structure of the touch electrode 11 and the interference suppression layer 213 in FIG. 4C is 1. : 5.
  • FIG. 4B and FIG. 4C as the brightness contrast of the material forming the grid structure of the touch electrode 11 and the interference suppression layer 213 is increased, the effect of the moiré is gradually weakened, thereby eliminating Mo. Er pattern.
  • the pixel spacer layer can be entirely formed of a white resin material as the interference interference layer 213, and the black resin material is eliminated.
  • Black matrix layer 214 which further saves process flow.
  • the display substrate in this embodiment utilizes the above-mentioned visual principle, so that the touch electrode formed by using the dark color of the metal material in the touch screen does not interfere with the pixel spacer layer in the display screen, thereby weakening or eliminating the Mo Er pattern. It can be seen that the scheme other than changing the fringe period, that is, the scheme of reducing the stripe contrast is practically feasible and has good effects for eliminating moiré.
  • the display substrate in this embodiment has a weak moiré or no moiré at all, ensuring a good display effect.
  • This embodiment provides a display substrate as another specific application of the first embodiment.
  • the display substrate of this embodiment is different from the display substrate of the second embodiment in that the display screen is an OLED display screen.
  • the first structure is a touch screen, wherein the grid structure is a touch electrode disposed vertically intersecting; the second structure is a display screen, and the display screen includes a plurality of sub-pixels arranged in a matrix, wherein the grid
  • the lattice structure is a pixel spacer layer disposed between the sub-pixels, and the pixel spacer layer includes at least a interference interference layer formed of a light color material.
  • the display screen in this embodiment is an OLED display screen, and the OLED display screen includes a plurality of spaced-apart OLEDs; wherein the pixel spacer layer is disposed between adjacent OLEDs, and the pixel spacer layer further includes a pixel defining layer formed of a black resin material.
  • the pixel defining layer and the interference layer have the same shape and completely overlap in the forward projection direction.
  • the interference layer is formed over the pixel defining layer by a patterning process such that the interference layer is closer to the touch screen than the pixel defining layer.
  • the interference interference layer is formed of a white resin material (or a white photoresist material), preferably a white resin material (or a white photoresist material) is doped with TiO 2 ;
  • the grid structure in the touch screen is made of a dark color metal material (for example, copper) , nano silver, graphene, etc.).
  • the display substrate in this embodiment has a weak moiré or no moiré at all, ensuring a good display effect.
  • the first embodiment to the third embodiment provide a touch screen that eliminates moiré from the perspective of reducing the stripe contrast, although it is a touch screen having the same periodically arranged grid structure in the display field.
  • the display screen as an example, but can be applied to all applications in other fields that need to eliminate moiré, which is not limited herein.
  • the solution adopting the embodiment of the present invention has the advantages of being easier to implement and more general, and does not generate additional design constraints.
  • This embodiment provides a display device including a second embodiment or a third implementation The display substrate in the example.
  • the display device may be any product or component having a display function such as a liquid crystal panel, an electronic paper, an OLED panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • a display function such as a liquid crystal panel, an electronic paper, an OLED panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • the display device in this embodiment has a good display effect because the display substrate having weaker moiré or no moiré in the second embodiment or the third embodiment is employed.

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Abstract

一种显示基板和一种显示装置，属于显示技术领域。该显示基板包括层叠设置的第一结构和第二结构，第一结构和第二结构的相对的两侧上分别包括具有相同的周期性排布的网格结构，其中，所述第一结构的网格结构的颜色与所述第二结构中的网格结构的颜色的明度不同。该显示基板具有较少的莫尔纹或无莫尔纹，具有较好的显示效果。

Description

显示基板和显示装置 技术领域
本发明属于显示技术领域，具体涉及显示基板和显示装置。
背景技术
在信息化时代，人们需要对信息进行显示。因此，显示装置作为显示信息的装置发挥着越来越重要的作用。目前市场上最为通用的显示方式是平板显示，平板显示包括液晶显示和OLED显示。平板显示装置中具有多个子像素，各子像素之间互相间隔而形成网格结构。为了保证遮光效果，通常在网格结构对应的位置还设置有黑矩阵。总体而言，平板显示装置由于具有薄型、轻量、低功耗等优良的性能，而广泛应用于电脑、电视以及移动终端设备等多种应用。
为了便于显示装置的使用，并提高使用显示装置的用户体验，目前还在平板显示装置中集成了触控功能。其中，触控屏可独立制作然后与显示屏贴附在一起，也可以与显示屏融合为一体制备。为了实现触控信号的感测和采集，触控屏中通常包括交叉设置的多个深色的触控电极(即金属网格metal mesh)，这些触控电极通常对应设置于显示屏中的子像素间隙中，以免影响显示效果。但是，不管是独立制作或一体制备，触控电极与子像素间隙不可能完全重叠地设置，此时显示屏中的多个黑矩阵网格结构和触控屏中的多个金属网格结构很容易互相干涉而形成莫尔纹(moiré fringe)。
莫尔纹一直是困扰显示领域的一大光学问题，在网格结构应用中更是关键问题。目前对于莫尔纹的解决方案基本都是通过减小条纹周期来消除莫尔纹。但经研究发现，通过调节条纹周期来消除莫尔纹，会受到诸如网格电阻、网格均匀度等其他因素的制 约。
可见，设计一种受制约小、易于实现且消除莫尔纹效果好的方案成为目前亟待解决的技术问题。
发明内容
本发明的目的是针对现有技术中存在的上述不足，提供一种显示基板和一种显示装置，该显示基板具有较少的莫尔纹或无莫尔纹，具有较好的显示效果。
本发明的一些实施例提供了一种显示基板，该显示基板包括层叠设置的第一结构和第二结构，所述第一结构和所述第二结构的相对的两侧上分别包括具有相同的周期性排布的网格结构，其中，所述第一结构的网格结构的颜色与所述第二结构中的网格结构的颜色的明度不同。
例如，所述第一结构的网格结构的颜色的明度为暗色明度，所述第二结构的网格结构的颜色的明度为亮色明度。
例如，形成所述第一结构的网格结构的材料的颜色的明度为暗色明度，形成所述第二结构的网格结构的材料的颜色的明度为亮色明度。
例如，所述第一结构为触控屏，所述触控屏中的网格结构为垂直交叉设置的触控电极；并且
所述第二结构为显示屏，所述显示屏包括呈矩阵排列的多个子像素，所述显示屏中的网格结构为设置于所述子像素之间的像素间隔层，所述像素间隔层至少包括采用亮色明度材料形成的消干涉层。
例如，所述显示屏为液晶显示屏，所述液晶显示屏包括相对设置的彩膜基板和阵列基板，所述彩膜基板包括间隔设置且颜色循环排布的多个彩膜层；
其中，所述像素间隔层设置于所述彩膜基板中相邻的彩膜层之间，所述像素间隔层还包括采用黑色树脂材料形成的黑矩阵层，所述黑矩阵层和所述消干涉层具有相同的形状且在正投影方向上 完全重叠。
例如，所述消干涉层采用构图工艺形成在所述黑矩阵的上方，使得所述消干涉层相对所述黑矩阵层更远离所述阵列基板。
例如，所述显示屏为OLED显示屏，所述OLED显示屏包括间隔设置的多个OLED；
其中，所述像素间隔层设置于相邻的OLED之间，所述像素间隔层还包括黑色树脂材料形成的像素限定层，所述像素限定层和所述消干涉层具有相同的形状且在正投影方向上完全重叠。
例如，所述消干涉层采用构图工艺形成在所述像素限定层的上方，使得所述消干涉层相对所述像素限定层更靠近所述触控屏。
例如，所述消干涉层采用白色树脂材料形成。
例如，所述第一结构的网格结构采用暗色明度的金属材料形成。
本发明的一些实施例提供了一种显示装置，该显示装置包括上述的显示基板。
本发明的有益效果是：所述显示基板通过分别采用不同明度的材料来形成具有相同的周期性排布的网格结构，从而减弱或消除莫尔纹。所述显示基板中消除莫尔纹的方式比现有技术中采用缩小条纹周期的方式更简单、更通用。
附图说明
图1为本发明第二实施例中显示基板的结构示意图；
图2为图1中的彩膜基板的局部放大图；
图3为明度色标的示意图；以及
图4A至图4C为触控屏和显示屏中的网格结构采用不同明度对比度颜色的材料形成时产生的莫尔纹的示意图。
附图标记说明：
1-触控屏；11-触控电极；
2-显示屏；21-彩膜基板；211-第一基板；212-彩膜层；213-消干涉层；214-黑矩阵层；22-阵列基板；221-第二基板； 222-数据线；223-薄膜晶体管；23-液晶分子。
具体实施方式
为使本领域技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明的显示基板和显示装置作进一步详细描述。
本发明的技术构思如下：莫尔纹是在有一定间隔的物体上发生的干涉条纹，其本质是一种视觉现象。从原理上来讲，莫尔纹为人眼对周期性结构的分辨，人眼对莫尔纹的感受与两个客观因素有关，即条纹的周期和条纹的明度对比度，当条纹的明度对比度很大时，即使条纹周期足够大，人眼也不一定能分辨莫尔纹。本发明突破现有技术的常规方法的思路，从考虑进入人眼的视觉效果出发，采用一种不同于目前的减小条纹周期的方式。具体地，本发明通过降低条纹对比度，来达到减弱或消除莫尔纹的目的。
第一实施例
本实施例提供一种显示基板，包括层叠设置的第一结构和第二结构，第一结构和第二结构的相对的两侧(例如，图1中触控电极11所在的一侧和消干涉层213所在的一侧)上分别包括具有相同的周期性排布的网格结构，其中，第一结构的网格结构的颜色与第二结构中的网格结构的颜色的明度不同。这里，明度是色彩的三要素之一(色彩的三要素分别是：明度、纯度和色相)，是指色彩的明暗程度。一般来说，黑色的明度是最低的，白色的明度是最高的。
通俗地讲，明度对比是色彩的明暗程度的对比，也称色彩的黑白度对比。明度对比是色彩构成的最重要的因素，色彩的层次与空间关系主要依靠色彩的明度对比来表现；只有色相的对比而无明度对比，图案的轮廓形状难以辨认；只有纯度的对比而无明度的对比，图案的轮廓形状更难辨认。本发明即利用了明度对比对轮廓形状勾勒的重要作用，将其利用到显示基板中，从而消除 具有相同的周期性排布的网格结构之间的干涉作用，为人眼视觉带来较佳的显示效果。
在本实施例的显示基板中，第一结构的网格结构的颜色的明度为暗色明度，第二结构的网格结构的颜色的明度为亮色明度。例如，形成第一结构的网格结构的材料的颜色的明度为暗色明度，形成第二结构的网格结构的材料的颜色的明度为亮色明度。
本实施例中的显示基板，通过分别采用不同明度的材料来形成触控屏和显示屏中具有相同的周期性排布的网格结构，从而减弱或消除莫尔纹。该显示基板中消除莫尔纹的方式比现有技术中采用缩小条纹周期的方式更简单、更通用。
第二实施例
本实施例提供一种显示基板，该显示基板具有较少的莫尔纹或无莫尔纹，具有较好的显示效果。
作为第一实施例的一种具体应用，如图1所示，本实施例的显示基板中，第一结构为触控屏1，其中的网格结构为垂直交叉设置的触控电极11；第二结构为显示屏2，显示屏2包括多个呈矩阵排列的子像素，其中的网格结构为设置于各子像素之间的像素间隔层，像素间隔层至少包括采用亮色明度材料形成的消干涉层213。在该显示基板中，触控屏1中的触控电极11的网格结构和显示屏2中的网格结构具有相同的形状。此外，通过在显示屏2的像素间隔层中形成消干涉层213，来减弱或消除莫尔纹的产生。
具体的，图1中，显示屏2为液晶显示屏，液晶显示屏包括相对设置的彩膜基板21和阵列基板22，彩膜基板21包括多个间隔设置且颜色循环排布的彩膜层212(例如，在图1中，多个彩膜层212沿水平方向排列而不是沿竖直方向排列)，多个彩膜层212设置在第一基板211的靠近阵列基板22的一侧；其中，像素间隔层设置于彩膜基板21中相邻的彩膜层212之间，像素间隔层还包括采用黑色树脂材料形成的黑矩阵层214，黑矩阵层214和消干涉层213具有相同的形状且在正投影方向上完全重叠。在液晶显示 屏中，阵列基板22的对应着像素间隔层的区域对应地设置有交叉设置的栅线(图1中未具体示出)和数据线222，由栅线和数据线222围成的像素区域中设置有呈矩阵排列的多个薄膜晶体管223，利用薄膜晶体管223的关断或接通形成电场来控制液晶分子23的旋转以实现透光，并借助彩膜层212的渲染进而实现各种彩色图像的显示。本实施例中，在形成消干涉层213的基础上形成了黑矩阵层214，有利于保证液晶显示屏中相邻子像素之间的遮光性，保证了显示质量。
如图2所示，消干涉层213采用构图工艺形成在黑矩阵层214的上方，消干涉层213相对黑矩阵层214更远离阵列基板(在显示图像时，相对阵列基板更靠近人眼)。由于消干涉层213的图形与黑矩阵层214的图形完全相同，因此可以采用同一掩模板在同一构图工艺中形成消干涉层213和黑矩阵层214。因此，采用构图工艺形成消干涉层213不会增加额外的工艺步骤，而且由于工艺成熟简单，能保证较高的良率。
在如图3所示的明度色标图中，明度在零度至三度的色彩称为低明度也即暗色明度，四度至六度的色彩称为中明度，七度至十度的色彩称为高明度也即亮色明度。色彩间明度差别的大小决定明度对比的强弱。三度差以下的对比又称为短调对比；大于三度且小于等于五度差的对比称为明度中对比，又称为中调对比；大于五度差的对比称为明度强对比，又称为长调对比。在本实施例的显示基板中，触控电极11与消干涉层213的形成材料的颜色为明度强对比或长调对比时，减弱或消除莫尔纹的效果最好。在应用过程中，触控电极11与消干涉层213的形成材料的颜色亮度对比度可灵活进行选择，这里不做限定。
例如，消干涉层213采用白色树脂材料(或白色光阻材料)形成，优选白色树脂材料(或白色光阻材料)内掺杂TiO2；触控屏1中的触控电极11形成的网格结构采用不透明的暗色明度的金属材料(例如铜、纳米银、石墨烯等)形成。同时，该显示基板的显示屏2中，将彩膜基板21侧原来单纯采用黑色树脂材料形成 的黑矩阵层214更换成黑色树脂材料和白色树脂材料两层形成的像素间隔层，且将白色树脂材料形成的层结构设置为更靠近触控屏1，像素间隔层(其包括消干涉层213和黑矩阵层214)的叠层结构如图2所示。根据上述结构，白色树脂材料形成的消干涉层213相对黑矩阵层214更靠近人眼，与黑色金属材料形成的触控电极11的对比度最大，消莫尔纹的效果最好。
如图4A至图4C所示为触控电极11和消干涉层213采用不同明度对比度的材料形成网格结构的视觉对照图，处于上层的为触控电极11(在触控屏1中)、处于下层的为消干涉层213(在显示屏2中)。图4A中的触控电极11和消干涉层213的网格结构的条纹灰度值对比度为1∶1，即触控电极11和消干涉层213采用相同的颜色(黑色)形成；图4B中的触控电极11和消干涉层213的网格结构的条纹灰度值对比度为1∶2；图4C中的触控电极11和消干涉层213的网格结构的条纹灰度值对比度为1∶5。将图4A、图4B和图4C进行对比可见，随着触控电极11和消干涉层213的形成网格结构的材料的明度值对比度的增大，莫尔纹的效果逐渐减弱，进而消除莫尔纹。
当然，在显示屏的各像素点之间的遮光要求能通过除黑矩阵之外的其他方式满足时，像素间隔层可以全部采用白色树脂材料形成为消干涉层213，而取消黑色树脂材料形成的黑矩阵层214，这进一步节省工艺流程。
本实施例中的显示基板利用上述视觉原理，使得触控屏中采用暗色明度的金属材料形成网格状的触控电极不会与显示屏中的像素间隔层产生干涉，进而减弱或消除了莫尔纹。可见，采用除改变条纹周期之外的方案，即采用降低条纹对比度的方案对于消除莫尔纹是确实可行且具有良好效果的。
本实施例中的显示基板具有较弱的莫尔纹或完全没有莫尔纹，保证了良好的显示效果。
第三实施例
本实施例提供一种显示基板作为第一实施例的另一种具体应用。本实施例的显示基板与第二实施例的显示基板不同的是，其中的显示屏为OLED显示屏。
在该显示基板中，第一结构为触控屏，其中的网格结构为垂直交叉设置的触控电极；第二结构为显示屏，显示屏包括多个呈矩阵排列的子像素，其中的网格结构为设置于子像素之间的像素间隔层，像素间隔层至少包括采用浅色材料形成的消干涉层。
本实施例中的显示屏为OLED显示屏，OLED显示屏包括多个间隔设置的OLED；其中，像素间隔层设置于相邻OLED之间，像素间隔层还包括黑色树脂材料形成的像素限定层，像素限定层和消干涉层具有相同的形状且在正投影方向上完全重叠。
例如，消干涉层采用构图工艺形成在像素限定层的上方，使得所述消干涉层相对所述像素限定层更靠近所述触控屏。消干涉层采用白色树脂材料(或白色光阻材料)形成，优选白色树脂材料(或白色光阻材料)内掺杂TiO2；触控屏中的网格结构采用暗色明度的金属材料(例如铜、纳米银、石墨烯等)形成。
本实施例中的显示基板减弱或消除莫尔纹的原理与第二实施例中减弱或消除莫尔纹的原理相同，这里不再详述。
本实施例中的显示基板，具有较弱的莫尔纹或完全没有莫尔纹，保证了良好的显示效果。
容易理解的是，第一实施例至第三实施例提供的从降低条纹对比度角度来消除莫尔纹的方案，虽然是以显示领域中有相同的周期性排布的网格结构的触控屏和显示屏作为示例，但是可应用于其他领域中需要消除莫尔纹的所有应用，这里不做限定。而且，相对现有技术中采用调节条纹周期来消除莫尔纹的方案，采用本发明实施例的方案具有更易于实施、更通用的优势，不会产生附加的设计制约。
第四实施例
本实施例提供一种显示装置，其包括第二实施例或第三实施 例中的显示基板。
该显示装置可以为：液晶面板、电子纸、OLED面板、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等具有显示功能的任何产品或部件。
本实施例中的显示装置，由于采用了第二实施例或第三实施例中具有较弱莫尔纹或完全没有莫尔纹的显示基板，因此具有良好的显示效果。
应当理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也属于本发明的保护范围。

Claims (11)

  1. 一种显示基板，包括层叠设置的第一结构和第二结构，所述第一结构和所述第二结构的相对的两侧上分别包括具有相同的周期性排布的网格结构，其特征在于，所述第一结构的网格结构的颜色与所述第二结构中的网格结构的颜色的明度不同。
  2. 根据权利要求1所述的显示基板，其特征在于，所述第一结构的网格结构的颜色的明度为暗色明度，所述第二结构的网格结构的颜色的明度为亮色明度。
  3. 根据权利要求1所述的显示基板，其特征在于，形成所述第一结构的网格结构的材料的颜色的明度为暗色明度，形成所述第二结构的网格结构的材料的颜色的明度为亮色明度。
  4. 根据权利要求1所述的显示基板，其特征在于，所述第一结构为触控屏，所述触控屏中的网格结构为垂直交叉设置的触控电极；并且
    所述第二结构为显示屏，所述显示屏包括呈矩阵排列的多个子像素，所述显示屏中的网格结构为设置于所述子像素之间的像素间隔层，所述像素间隔层至少包括采用亮色明度材料形成的消干涉层。
  5. 根据权利要求4所述的显示基板，其特征在于，所述显示屏为液晶显示屏，所述液晶显示屏包括相对设置的彩膜基板和阵列基板，所述彩膜基板包括间隔设置且颜色循环排布的多个彩膜层；
    其中，所述像素间隔层设置于所述彩膜基板中相邻的彩膜层之间，所述像素间隔层还包括采用黑色树脂材料形成的黑矩阵层，所述黑矩阵层和所述消干涉层具有相同的形状且在正投影方向上 完全重叠。
  6. 根据权利要求5所述的显示基板，其特征在于，所述消干涉层采用构图工艺形成在所述黑矩阵的上方，使得所述消干涉层相对所述黑矩阵层更远离所述阵列基板。
  7. 根据权利要求4所述的显示基板，其特征在于，所述显示屏为OLED显示屏，所述OLED显示屏包括间隔设置的多个OLED；
    其中，所述像素间隔层设置于相邻的OLED之间，所述像素间隔层还包括黑色树脂材料形成的像素限定层，所述像素限定层和所述消干涉层具有相同的形状且在正投影方向上完全重叠。
  8. 根据权利要求7所述的显示基板，其特征在于，所述消干涉层采用构图工艺形成在所述像素限定层的上方，使得所述消干涉层相对所述像素限定层更靠近所述触控屏。
  9. 根据权利要求4-8中任一项所述的显示基板，其特征在于，所述消干涉层采用白色树脂材料形成。
  10. 根据权利要求1-9中任一项所述的显示基板，其特征在于，所述第一结构的网格结构采用暗色明度的金属材料形成。
  11. 一种显示装置，其特征在于，包括权利要求1-10中任一项所述的显示基板。
PCT/CN2016/070858 2015-08-12 2016-01-14 显示基板和显示装置 WO2017024768A1 (zh)

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