WO2021164581A1 - 显示基板及其制作方法、显示装置 - Google Patents
显示基板及其制作方法、显示装置 Download PDFInfo
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- WO2021164581A1 WO2021164581A1 PCT/CN2021/075543 CN2021075543W WO2021164581A1 WO 2021164581 A1 WO2021164581 A1 WO 2021164581A1 CN 2021075543 W CN2021075543 W CN 2021075543W WO 2021164581 A1 WO2021164581 A1 WO 2021164581A1
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- light
- layer
- light extraction
- pixel
- base substrate
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- 239000000758 substrate Substances 0.000 title claims abstract description 246
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000000605 extraction Methods 0.000 claims abstract description 187
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- 239000004020 conductor Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 2
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- 239000002356 single layer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/005—Diaphragms
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
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- G02B5/00—Optical elements other than lenses
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- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
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- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
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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
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- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
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- H—ELECTRICITY
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
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- H10K59/80—Constructional details
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- H10K59/878—Arrangements for extracting light from the devices comprising reflective means
Definitions
- the present disclosure relates to the field of display technology, in particular to a display substrate, a manufacturing method thereof, and a display device.
- a light extraction structure is provided on the light extraction side of the display substrate, but the light extracted by the light extraction structure will exit through adjacent pixels, causing the problem of image blur.
- a display substrate including:
- a plurality of pixels arranged in an array on the base substrate
- it also includes:
- the light-shielding pattern is located on a side of the encapsulation layer away from the pixel, and the light-shielding pattern is made of conductive materials and multiplexed as touch electrodes.
- the touch electrodes include a plurality of separate touch sub-electrodes located in the same layer; or
- the touch electrodes include first touch sub-electrodes located in the same layer and arranged in a second direction and second touch sub-electrodes arranged in a third direction, and the third direction and the second direction are mutually Cross, adjacent second touch control sub-electrodes are directly connected, and adjacent first touch control sub-electrodes are connected by different layers of touch electrode bridges.
- the touch electrode adopts a metal grid, and each metal grid corresponds to a pixel of the display substrate, and the orthographic projection of the pixel on the base substrate corresponds to the hollow defined by the metal grid.
- the orthographic projections of the regions on the base substrate coincide.
- the light extraction structure includes one light extraction layer; or, it includes at least two light extraction layers arranged in sequence from a direction close to the base substrate to a direction away from the base substrate.
- the light extraction layer includes a first light extraction layer
- the first light extraction layer includes at least two light-transmitting material layers stacked and arranged, from near the base substrate to far away from the base substrate.
- the refractive index of the light-transmitting material layer shows an increasing trend, or the refractive index of the light-transmitting material layer shows a trend of alternating arrangement of high and low.
- the first light extraction layer includes a first light-transmitting material layer and a second light-transmitting material layer that are stacked, and the second light-transmitting material layer is located on the first light-transmitting material layer away from the liner.
- a plurality of grooves are provided on the surface of the first light-transmitting material layer facing the second light-transmitting material layer.
- the display substrate includes an encapsulation layer covering the plurality of pixels, the encapsulation layer includes an inorganic insulating layer, the light-transmitting material layer multiplexes the inorganic insulating layer, and the inorganic insulating layer is far away from the A plurality of grooves are provided on a side surface of the pixel and/or a side surface close to the pixel.
- the display substrate includes an encapsulation layer covering the plurality of pixels, and touch electrodes located on a side of the encapsulation layer away from the pixels, and the touch electrodes include Arranged first touch sub-electrodes and second touch sub-electrodes arranged along a third direction, the third direction and the second direction cross each other, and adjacent second touch sub-electrodes are directly connected , Adjacent first touch sub-electrodes are connected by different layers of touch electrode bridges, and the first touch sub-electrodes, the second touch sub-electrodes and the touch electrode bridges are spaced apart There is a first insulating layer, the light-transmitting material layer is multiplexed with the first insulating layer, and the first insulating layer is provided with a plurality of Groove.
- the display substrate includes an encapsulation layer covering the plurality of pixels, a buffer layer on the side of the encapsulation layer away from the pixels, and a touch control layer on the side of the buffer layer away from the pixels.
- An electrode, the light-transmitting material layer multiplexes the buffer layer, and a plurality of grooves are provided on a surface of the buffer layer away from the pixel and/or a surface close to the pixel.
- the display substrate includes an encapsulation layer covering the plurality of pixels, a touch electrode located on a side of the encapsulation layer away from the pixel, and a touch electrode located on a side of the touch electrode away from the pixel.
- a second insulating layer, the light-transmitting material layer multiplexes the second insulating layer, and a surface of the second insulating layer close to the pixel is provided with a plurality of grooves.
- the light extraction layer includes a second light extraction layer
- the second light extraction layer includes a light-transmitting material layer and a plurality of refractive particles located in the light-transmitting material layer.
- the refractive index of the refractive particles is It is greater than the refractive index of the light-transmitting material layer.
- the orthographic projection of the light extraction layer on the base substrate coincides with the orthographic projection of the pixels on the base substrate; or, the light extraction structure is a whole layer.
- the refractive index of the first light-transmitting material layer is smaller than the refractive index of the second light-transmitting material layer.
- the first light extraction layer includes a third light-transmitting material layer, a fourth light-transmitting material layer, and a fifth light-transmitting material layer that are sequentially arranged, wherein the The refractive index of the third light-transmitting material layer is smaller than the refractive index of the fourth light-transmitting material layer, and the refractive index of the fourth light-transmitting material layer is smaller than the refractive index of the fifth light-transmitting material layer.
- the light extraction layer includes a first light extraction layer and a second light extraction layer, and the orthographic projections of the first light extraction layer and the second light extraction layer on the base substrate overlap.
- the light extraction layer includes a first light extraction layer and a second light extraction layer
- the orthographic projection of the second light extraction layer on the base substrate covers a plurality of pixels on the base substrate Orthographic projection.
- the embodiment of the present disclosure also provides a display device including the display substrate as described above.
- the embodiment of the present disclosure also provides a manufacturing method of a display substrate, including:
- a light-shielding pattern is formed on the side of the pixel away from the base substrate, and the orthographic projection of the light-shielding pattern on the base substrate and the gap between adjacent pixels on the base substrate exist overlapping;
- a light extraction structure is formed on the light output side of the pixel and the side of the light-shielding pattern close to the base substrate.
- the light extraction direction of the light extraction structure is the direction away from the pixel.
- the orthographic projection of the take-out structure on the base substrate overlaps with the orthographic projection of the pixel on the base substrate. overlapping
- 1A-1B are schematic plan views of the display substrate
- Figure 1C is an enlarged schematic diagram of area A
- Figure 2 is a schematic cross-sectional view of a related art showing a substrate in the DD' direction;
- FIG. 3 is a schematic cross-sectional view of the related art showing the substrate in the BB' direction;
- FIG. 4 is a schematic cross-sectional view of the display substrate of some embodiments of the disclosure in the BB' direction shown in FIG. 1B;
- FIG. 5 is a schematic cross-sectional view of the display substrate of some embodiments of the disclosure in the DD' direction shown in FIG. 1A;
- FIG. 6 is a schematic cross-sectional view of the display substrate of some embodiments of the disclosure in the DD' direction shown in FIG. 1A;
- FIG. 7 is a schematic cross-sectional view of the display substrate of some embodiments of the disclosure in the DD' direction shown in FIG. 1A;
- FIG. 8 is a schematic diagram of the structure of a light extraction layer according to some embodiments of the disclosure.
- FIG. 9 is a schematic diagram of the structure of the light extraction layer of some embodiments of the disclosure.
- FIG. 10 is a schematic diagram of the structure of the light extraction layer of some embodiments of the disclosure.
- a light extraction structure is provided on the light exit side of the display substrate.
- the light extracted by the light extraction structure is likely to exit through the adjacent pixels, causing the problem of blurred images.
- the embodiments of the present disclosure provide a display substrate, a manufacturing method thereof, and a display device, which can improve the light extraction efficiency of the display substrate and avoid image blur.
- An embodiment of the present disclosure provides a display substrate, including:
- a plurality of pixels arranged in an array on the base substrate
- a light extraction structure is provided on the light exit side of the pixel, which can improve the light extraction rate of the display substrate; at the same time, a light shielding pattern is provided on the side of the pixel away from the base substrate, and the light shielding pattern is on the base substrate.
- the gap between the orthographic projection and the adjacent pixels overlaps the orthographic projection on the base substrate, so that the shading pattern can block the light taken out by the light extraction structure and directed to the adjacent pixels, so as to avoid the light taken out by the light extraction structure. It emits through adjacent pixels, thereby avoiding the problem of image blur.
- the orthographic projection of the light extraction structure on the base substrate may be in the orthographic projection of the pixel on the base substrate, or the orthographic projection of the pixel on the base substrate is in the orthographic projection of the light extraction structure on the base substrate, Or, the orthographic projection of the light extraction structure on the base substrate coincides with the orthographic projection of the pixels on the base substrate.
- the pixel includes an anode, a cathode, and a light-emitting layer located between the anode and the cathode.
- the area where the pixel is located is the area defined by the pixel defining layer of the display substrate.
- the orthographic projection of the shading pattern on the base substrate and the orthographic projection of the gap between adjacent pixels on the base substrate completely overlap, so that the shading pattern will not affect
- the aperture ratio of the display substrate can block the light taken out by the light extraction structure and directed to adjacent pixels to the greatest extent, so as to avoid the problem of image blur.
- touch electrodes are provided on the display substrate.
- the touch electrode is mostly designed with a metal grid. As shown in Figure 1A and Figure 2, the touch electrode can adopt a double-layer metal grid design.
- the control electrode includes a first touch sub-electrode 11 and a second touch sub-electrode 13 in the same layer, the first touch sub-electrode 11 is arranged in the second direction, and the second touch sub-electrode 13 is arranged in the third direction , The third direction and the second direction cross each other, the adjacent second touch sub-electrodes 13 are directly connected, and the adjacent first touch sub-electrodes 11 are connected through the touch electrode bridges 12 of different layers.
- the touch electrodes may also be designed as shown in FIG. 1B and FIG. 3 with a single-layer metal grid-like design, including a plurality of touch sub-electrodes 14 located on the same layer and separated from each other.
- the area defined by the touch electrode 1 in the shape of a metal mesh is the area where the pixel 2 is located.
- the touch electrodes Since most of the touch electrodes are made of opaque metal, they have light-shielding performance. As shown by the arrow in Figure 2, the light emitted from the pixel 2 and directed to the adjacent pixels will be blocked by the touch electrode; and the grid-like touch The electrodes are arranged around the pixels, and each metal grid corresponds to a pixel 2 of the display substrate.
- the display substrate further includes:
- the light-shielding pattern is located on a side of the encapsulation layer away from the pixel, and the light-shielding pattern is made of conductive materials and multiplexed as touch electrodes.
- multiplexing the shading pattern as the touch electrode can simplify the structure of the display substrate and reduce the production cost of the display substrate.
- the light extraction structure After setting the light-shielding pattern on the display substrate, the light extraction structure is arranged on the light-exit side of the pixel, which can achieve the effect of improving the light extraction efficiency. Because the light-shielding pattern can block the light taken out by the light extraction structure and directed to the adjacent pixels, avoid The light extracted by the light extraction structure will exit through adjacent pixels. Therefore, the technical solution of this embodiment can be applied to a small-sized display product to achieve the purpose of improving the light extraction efficiency of the small-sized display product.
- the light extraction structure may include one light extraction layer; or, in a direction from close to the base substrate to away from the base substrate, the light extraction structure includes at least two light extraction layers arranged in sequence. A light extraction layer.
- the display substrate includes a pixel defining layer 7 on the substrate 3.
- the pixels 2 are located in an area defined by the pixel defining layer 7; an encapsulation layer 4 covering the pixels 2;
- the light extraction layer 9 and the buffer layer 5 on the side of the layer 4 away from the pixel 2;
- the touch sub-electrode 14 on the side of the buffer layer 5 away from the pixel 2;
- the second insulating layer 6 covering the touch sub-electrode 14.
- a light extraction layer 9 is provided on the light exit side of the pixel 2.
- the light extraction layer 9 can change the direction of the light emitted by the pixel 2, reduce the angle between the light emitted by the pixel 2 and the first direction, and increase the forward light. Take it out to improve the light extraction efficiency of the display substrate.
- the first direction is the direction perpendicular to the substrate 3; in addition, since the touch sub-electrode 14 is provided on the side of the light extraction layer 9 away from the pixel 2, the touch sub-electrode 14 It is made of metal and has light-shielding performance, which can shield the light taken out through the light extraction layer 9 and directed to adjacent pixels, so the problem of image blur can be avoided.
- the display substrate includes a pixel defining layer 7 on the substrate 3, and the pixels 2 are located in an area defined by the pixel defining layer 7; an encapsulation layer 4 covering the pixels 2;
- the layer 4 is away from the light extraction layer 9 and the buffer layer 5 on the side of the pixel 2;
- the touch electrode bridge 12, the first touch sub-electrode 11 and the second touch sub-electrode 13 are located on the side of the buffer layer 5 away from the pixel 2,
- a light extraction layer 9 is provided on the light exit side of the pixel 2.
- the light extraction layer 9 can change the direction of the light emitted by the pixel 2, reduce the angle between the light emitted by the pixel 2 and the first direction, and increase the forward light. The light extraction efficiency of the display substrate is improved.
- the first direction is the direction perpendicular to the substrate 3; in addition, since the light extraction layer 9 is provided with the first touch sub-electrode 11 and the second touch
- the control sub-electrode 13 and the touch electrode bridge 12, the first touch sub-electrode 11, the second touch sub-electrode 13 and the touch electrode bridge 12 are made of metal, have light-shielding performance, and can take out the light extraction layer 9 , The light directed to the adjacent pixels is blocked, so the problem of image blur can be avoided.
- the display substrate includes a pixel defining layer 7 on the substrate 3.
- the pixels 2 are located in an area defined by the pixel defining layer 7; an encapsulation layer 4 covering the pixels 2; Layer 4 is away from the light extraction layer 9 and the buffer layer 5 on the side of the pixel 2; the touch electrode bridge 12 and the light extraction layer 9 located on the side of the buffer layer 5 away from the pixel 2; An insulating layer 8; a second touch sub-electrode 13 located on the side of the first insulating layer 8 away from the pixel 2; a second insulating layer 6 covering the second touch sub-electrode 13.
- two light extraction layers 9 are provided on the light exit side of the pixel 2.
- the light extraction layer 9 can change the direction of the light emitted by the pixel 2, reduce the angle between the light emitted by the pixel 2 and the first direction, and increase the forward light. Take it out to improve the light extraction efficiency of the display substrate.
- the first direction is the direction perpendicular to the substrate 3; in addition, because the second touch sub-electrode 13 and the touch electrode are provided on the side of the light extraction layer 9 away from the pixel 2
- the bridge 12, the second touch sub-electrode 13 and the touch electrode bridge 12 have light-shielding properties, which can block the light taken out through the light extraction layer 9 and directed to adjacent pixels, so that the problem of image blur can be avoided.
- the display substrate is provided with two light extraction layers 9, which can further improve the light extraction efficiency of the display substrate compared to providing a single light extraction layer.
- the light extraction layer is made of light-transmitting materials and does not affect the emission of light
- the light extraction layer can be designed as a whole layer, which can simplify the manufacturing process of the light extraction layer.
- the display substrate only includes a single-layer light extraction layer
- the light extraction layer may only be provided in a partial area of the display substrate, for example, the orthographic projection of the light extraction layer on the base substrate coincides with the orthographic projection of the pixels on the base substrate ; Or, the light extraction layer is a whole layer.
- the display substrate includes at least two light extraction layers, at least one of them may be provided only in a partial area of the display substrate, and the other light extraction layers may be a whole layer; or, all the light extraction layers may be a whole layer; Or, all the light extraction layers are only provided in a partial area of the display substrate.
- the display substrate includes a pixel defining layer 7 on the substrate 3.
- the pixels 2 are located in an area defined by the pixel defining layer 7; an encapsulation layer 4 covering the pixels 2;
- the light extraction layer 9 on the side of the layer 4 away from the pixel 2;
- the buffer layer 5 on the side of the light extraction layer 9 away from the substrate 3;
- the first insulating layer 8 located on the side of the light extraction layer 9 away from the pixel 2;
- the second touch sub-electrode 13 located on the side of the first insulating layer 8 away from the pixel 2;
- two light extraction layers 9 are provided on the light exit side of the pixel 2.
- the light extraction layer 9 can change the direction of the light emitted by the pixel 2, reduce the angle between the light emitted by the pixel 2 and the first direction, and increase the forward light. Take it out to improve the light extraction efficiency of the display substrate.
- the first direction is the direction perpendicular to the substrate 3; in addition, because the second touch sub-electrode 13 and the touch electrode are provided on the side of the light extraction layer 9 away from the pixel 2
- the bridge 12, the second touch sub-electrode 13 and the touch electrode bridge 12 have light-shielding properties, which can block the light taken out through the light extraction layer 9 and directed to adjacent pixels, so that the problem of image blur can be avoided.
- the display substrate is provided with two light extraction layers 9. Among them, the light extraction layer close to the pixel 2 is designed as a whole layer, and the light extraction layer far away from the pixel 2 only occupies a part of the display substrate.
- the light extraction layer includes a first light extraction layer
- the first light extraction layer includes at least two light-transmitting material layers stacked and arranged from close to the base substrate to far away from the base substrate.
- the refractive index of the light-transmitting material layer shows an increasing trend, so that the light extraction layer 9 can change the direction of the light emitted by the pixel 2, reduce the angle between the light emitted by the pixel 2 and the first direction, and increase the positive direction. Take it out.
- the refractive index of the light-transmitting material layer is arranged alternately in the direction from close to the base substrate to away from the base substrate, for example, from close to the base substrate to far away from the base substrate
- the first light-transmitting material layer, the second light-transmitting material layer, the third light-transmitting material layer, the fourth light-transmitting material layer,..., the m-th light-transmitting material layer are sequentially arranged in the direction of
- the refractive index of the light-transmitting material layer is greater than that of the first light-transmitting material layer
- the refractive index of the third light-transmitting material layer is less than that of the second light-transmitting material layer
- the refractive index of the fourth light-transmitting material layer is greater than that of the third light-transmitting material layer.
- At least one of the light-transmitting material layers included in the first light extraction layer can be a whole layer, and the other light-transmitting material layers are only provided in a partial area of the display substrate; or, all the light-transmitting material layers The light material layers are all a whole layer; or, all the light-transmitting material layers are only arranged in a partial area of the display substrate.
- the first light extraction layer includes a first light-transmitting material layer 91 and a second light-transmitting material layer 92 that are stacked, and the second light-transmitting material layer 92 Located on the side of the first light-transmitting material layer 91 away from the base substrate, the surface of the first light-transmitting material layer 91 facing the second light-transmitting material layer 92 is provided with a plurality of grooves 10.
- the refractive index of the first light-transmitting material layer 91 is smaller than the refractive index of the second light-transmitting material layer 92, the grooves 10 on the surface of the first light-transmitting material layer 91 can be arranged in an array, and the light emitted by the pixels 2 irradiates the first When the interface between the light-transmitting material layer 91 and the second light-transmitting material layer 92 is deflected, it exits toward the center of the pixel 2 to increase the forward light extraction and improve the light extraction efficiency of the display substrate.
- the cross section of the groove 10 in the direction parallel to the base substrate may be circular or rectangular.
- the cross section of the groove 10 in the direction parallel to the base substrate is not limited to a circle or a rectangle. Other shapes are also possible.
- the first light extraction layer includes a third light-transmitting material layer 93, a fourth light-transmitting material layer 94, and a fifth light-transmitting material layer 95, which are stacked
- the refractive index of the light-transmitting material layer is increasing in the direction close to the base substrate to away from the base substrate, so that when the light emitted by the pixel 2 irradiates the interface between two adjacent light-transmitting material layers, It will be deflected and exit toward the center of the pixel 2, thereby increasing the forward light extraction and improving the light extraction efficiency of the display substrate.
- the light extraction layer includes a second light extraction layer
- the second light extraction layer includes a light-transmitting material layer 96 and a layer located in the light-transmitting material layer 96.
- a plurality of refractive particles 97, the refractive index of the refractive particles 97 is greater than the refractive index of the light-transmitting material layer 96, so that the light emitted by the pixel 2 irradiates the light-transmitting material layer 96, and when it exits through the light-transmitting material layer 96, It will be deflected and exit toward the center of the pixel 2, thereby increasing the forward light extraction and improving the light extraction efficiency of the display substrate.
- the insulating film layer of the display substrate includes the inorganic insulating layer in the encapsulation layer, and also includes a buffer layer, a first insulating layer, a second insulating layer, etc. These insulating film layers are made of light-transmitting insulating materials, in order to simplify the structure of the display substrate At least one light-transmitting material layer constituting the light extraction layer can reuse at least one of the following insulating film layers of the display substrate: an inorganic insulating layer, a buffer layer, a first insulating layer, and a second insulating layer.
- the display substrate includes an encapsulation layer covering the plurality of pixels, the encapsulation layer includes an inorganic insulating layer, and the light-transmitting material layer multiplexes the inorganic insulating layer.
- the display substrate includes an encapsulation layer covering the plurality of pixels, and touch electrodes located on a side of the encapsulation layer away from the pixels, and the touch electrodes include The first touch sub-electrodes arranged along the second direction and the second touch sub-electrodes arranged along the third direction, the third direction and the second direction cross each other, and the second touch sub-electrodes are adjacent to each other Are directly connected to each other, adjacent first touch sub-electrodes are connected by different layers of touch electrode bridges, the first touch sub-electrodes, the second touch sub-electrodes and the touch electrode frame A first insulating layer is spaced between the bridges, and the light-transmitting material layer multiplexes the first insulating layer.
- the display substrate includes an encapsulation layer covering the plurality of pixels, a buffer layer on a side of the encapsulation layer away from the pixels, and a buffer layer on the buffer layer away from the pixels.
- Side touch electrode, the light-transmitting material layer multiplexes the buffer layer.
- the display substrate includes an encapsulation layer covering the plurality of pixels, a touch electrode located on a side of the encapsulation layer away from the pixel, and a touch electrode located far from the pixel.
- the second insulating layer on one side of the light-transmitting material layer is multiplexed with the second insulating layer.
- a groove may be prepared on the surface of the first insulating layer away from the base substrate, and a groove may also be prepared on the side of the first insulating layer close to the base substrate.
- grooves can be prepared on the side surface of the second insulating layer close to the base substrate; when the light-transmitting material layer is multiplexed with the buffer layer, the buffer layer can be away from the substrate A groove is prepared on one side surface of the substrate, and a groove can be prepared on the side of the buffer layer close to the base substrate; when the light-transmitting material layer is multiplexed with the inorganic insulating layer, the surface of the inorganic insulating layer away from the base substrate can be prepared To prepare the groove, it is also possible to prepare the groove on the side of the inorganic insulating layer close to the base substrate.
- the display substrate when the display substrate includes a plurality of light extraction layers, from the base substrate close to the display substrate to the base substrate far from the display substrate, the first light extraction layer, the second light extraction layer,...
- the refractive index of the light-transmitting material layer of the kth light extraction layer close to the k+1 light extraction layer is smaller than that of the k+1 light extraction layer close to the kth
- k is an integer greater than or equal to 1 and less than or equal to n.
- the light-transmitting insulating film layer of the display substrate is provided on the side of the light extraction layer away from the base substrate of the display substrate, in order to ensure the light extraction efficiency of the display substrate, the light extraction layer is close to the light-transmitting insulating film layer.
- the refractive index of the material layer is smaller than the refractive index of the transparent insulating film layer.
- the embodiment of the present disclosure also provides a display device including the display substrate as described above.
- the display device includes but is not limited to: radio frequency unit, network module, audio output unit, input unit, sensor, display unit, user input unit, interface unit, memory, processor, power supply and other components.
- the structure of the above display device does not constitute a limitation on the display device, and the display device may include more or less of the above components, or combine some components, or arrange different components.
- the display device includes, but is not limited to, a display, a mobile phone, a tablet computer, a television, a wearable electronic device, a navigation display device, and the like.
- the display device may be any product or component with a display function such as a TV, a monitor, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device also includes a flexible circuit board, a printed circuit board, and a backplane.
- the embodiment of the present disclosure also provides a manufacturing method of a display substrate, including:
- a light-shielding pattern is formed on the side of the pixel away from the base substrate, and the orthographic projection of the light-shielding pattern on the base substrate and the gap between adjacent pixels on the base substrate exist overlapping;
- a light extraction structure is formed on the light output side of the pixel and the side of the light-shielding pattern close to the base substrate.
- the light extraction direction of the light extraction structure is the direction of the light extraction structure away from the pixel.
- the orthographic projection of the take-out structure on the base substrate overlaps with the orthographic projection of the pixel on the base substrate.
- a light extraction structure is provided on the light exit side of the pixel, which can increase the light extraction rate of the display substrate; at the same time, a light shielding pattern is provided on the side of the pixel away from the base substrate, and the light shielding pattern is on the base substrate.
- the gap between the orthographic projection and the adjacent pixels overlaps the orthographic projection on the base substrate, so that the shading pattern can block the light taken out by the light extraction structure and directed to the adjacent pixels, so as to avoid the light taken out by the light extraction structure. It emits through adjacent pixels, thereby avoiding the problem of image blur.
- the manufacturing method of the display substrate of this embodiment is used to manufacture the display substrate described in the above embodiment, wherein the orthographic projection of the light extraction structure on the base substrate can be located in the orthographic projection of the pixel on the base substrate, or the pixel is in the
- the orthographic projection on the base substrate is located within the orthographic projection of the light extraction structure on the base substrate, or the orthographic projection of the light extraction structure on the base substrate coincides with the orthographic projection of the pixels on the base substrate.
- the pixel includes an anode, a cathode, and a light-emitting layer located between the anode and the cathode.
- the area where the pixel is located is the area defined by the pixel defining layer of the display substrate.
- the orthographic projection of the shading pattern on the base substrate and the orthographic projection of the gap between adjacent pixels on the base substrate completely overlap, so that the shading pattern will not affect
- the aperture ratio of the display substrate can block the light taken out by the light extraction structure and directed to adjacent pixels to the greatest extent, so as to avoid the problem of image blur.
- touch electrodes are provided on the display substrate.
- the touch electrode is mostly designed with a metal grid. As shown in Figure 1A and Figure 2, the touch electrode can adopt a double-layer metal grid design.
- the control electrode includes a first touch sub-electrode 11 and a second touch sub-electrode 13 in the same layer, the first touch sub-electrode 11 is arranged in the second direction, and the second touch sub-electrode 13 is arranged in the third direction , The third direction and the second direction cross each other, the adjacent second touch sub-electrodes 13 are directly connected, and the adjacent first touch sub-electrodes 11 are connected through the touch electrode bridges 12 of different layers.
- the touch electrodes can also be designed with a single-layer metal grid as shown in FIG. 1B and FIG. 3, and include a plurality of touch sub-electrodes 14 located on the same layer and separated from each other.
- the area defined by the touch electrode 1 in the shape of a metal mesh is the area where the pixel 2 is located.
- the touch electrodes are made of opaque metal and have light-shielding properties, as shown by the arrow in Figure 2, the light emitted through the pixel 2 and directed to the adjacent pixels will be blocked by the touch electrode; and the grid-like touch
- the electrodes are arranged around the pixels, and each metal grid corresponds to a pixel 2 of the display substrate.
- the manufacturing method of the display substrate includes:
- a light-shielding pattern is formed on the side of the encapsulation layer away from the pixel, and the light-shielding pattern is made of conductive materials and multiplexed as touch electrodes.
- the light-shielding patterns are multiplexed as touch electrodes, which can simplify the structure of the display substrate and reduce the production cost of the display substrate.
- the light extraction structure After setting the light-shielding pattern on the display substrate, the light extraction structure is arranged on the light-exit side of the pixel, which can achieve the effect of improving the light extraction efficiency. Because the light-shielding pattern can block the light taken out by the light extraction structure and directed to the adjacent pixels, avoid The light extracted by the light extraction structure will exit through the adjacent pixels. Therefore, the technical solution of this embodiment can be applied to a small-size display product to achieve the purpose of improving the light extraction efficiency of the small-size display product.
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Abstract
Description
Claims (19)
- 一种显示基板,包括:位于衬底基板上阵列排布的多个像素;位于所述像素远离所述衬底基板一侧的遮光图形,所述遮光图形在所述衬底基板上的正投影与相邻像素之间的间隙在所述衬底基板上的正投影存在重叠;位于所述像素的出光侧、且位于所述遮光图形靠近所述衬底基板一侧的光取出结构,所述光取出结构的出光方向为所述光取出结构远离所述像素的方向,所述光取出结构在所述衬底基板上的正投影与所述像素在所述衬底基板上的正投影存在重叠。
- 根据权利要求1所述的显示基板,还包括:覆盖所述多个像素的封装层;所述遮光图形位于所述封装层远离所述像素的一侧,所述遮光图形采用导电材料,复用为触控电极。
- 根据权利要求2所述的显示基板,其中,所述触控电极包括位于同一层的多个相互分离的触控子电极;或所述触控电极包括位于同一层、沿第二方向排布的第一触控子电极和沿第三方向排布的第二触控子电极,所述第三方向与所述第二方向相互交叉,相邻第二触控子电极之间直接连接,相邻第一触控子电极之间通过异层的触控电极架桥连接。
- 根据权利要求3所述的显示基板,其中,所述触控电极采用金属网格,每一金属网格对应所述显示基板的一个像素,所述像素在所述衬底基板上的正投影与对应金属网格限定出的镂空区域在所述衬底基板上的正投影重合。
- 根据权利要求1所述的显示基板,其中,所述光取出结构包括一个光取出层;或者,包括沿远离所述衬底基板的方向上、依次排布的至少两个光取出层。
- 根据权利要求5所述的显示基板,其中,所述光取出层包括第一光取出层,所述第一光取出层包括层叠设置的至少两层透光材料层,沿远离所述 衬底基板的方向上、透光材料层的折射率呈递增趋势或透光材料层的折射率呈高低交替排布的趋势。
- 根据权利要求6所述的显示基板,其中,所述第一光取出层包括层叠设置的第一透光材料层和第二透光材料层,所述第二透光材料层位于所述第一透光材料层远离所述衬底基板的一侧,所述第一透光材料层朝向所述第二透光材料层的一侧表面设置有多个凹槽。
- 根据权利要求6所述的显示基板,还包括覆盖所述多个像素的封装层,所述封装层包括无机绝缘层,所述透光材料层复用所述无机绝缘层,所述无机绝缘层远离所述像素的一侧表面和/或靠近所述像素的一侧表面设置有多个凹槽。
- 根据权利要求6所述的显示基板,还包括覆盖所述多个像素的封装层、位于所述封装层远离所述像素的一侧的触控电极,所述触控电极包括位于同一层、沿第二方向排布的第一触控子电极和沿第三方向排布的第二触控子电极,所述第三方向与所述第二方向相互交叉,相邻第二触控子电极之间直接连接,相邻第一触控子电极之间通过异层的触控电极架桥连接,所述第一触控子电极、所述第二触控子电极与所述触控电极架桥之间间隔有第一绝缘层,所述透光材料层复用所述第一绝缘层,所述第一绝缘层远离所述像素的一侧表面和/或靠近所述像素的一侧表面设置有多个凹槽。
- 根据权利要求6所述的显示基板,还包括覆盖所述多个像素的封装层、位于所述封装层远离所述像素的一侧的缓冲层、位于所述缓冲层远离所述像素的一侧的触控电极,所述透光材料层复用所述缓冲层,所述缓冲层远离所述像素的一侧表面和/或靠近所述像素的一侧表面设置有多个凹槽。
- 根据权利要求6所述的显示基板,还包括覆盖所述多个像素的封装层、位于所述封装层远离所述像素的一侧的触控电极、位于所述触控电极远离所述像素的一侧的第二绝缘层,所述透光材料层复用所述第二绝缘层,所述第二绝缘层靠近所述像素的一侧表面设置有多个凹槽。
- 根据权利要求5所述的显示基板,其中,所述光取出层包括第二光取出层,所述第二光取出层包括透光材料层和位于所述透光材料层内的多个折射粒子,所述折射粒子的折射率大于所述透光材料层的折射率。
- 根据权利要求5所述的显示基板,其中,所述光取出层在所述衬底基板上的正投影与所述像素在所述衬底基板上的正投影重合;或者,所述光取出结构为一整层。
- 根据权利要求7所述的显示基板,其中,所述第一透光材料层的折射率小于所述第二透光材料层的折射率。
- 根据权利要求6所述的显示基板,其中,沿远离所述衬底基板的方向,所述第一光取出层包括依次设置的第三透光材料层、第四透光材料层和第五透光材料层,其中,所述第三透光材料层的折射率小于所述第四透光材料层的折射率,所述第四透光材料层的折射率小于所述第五透光材料层的折射率。
- 根据权利要求5所述的显示基板,其中,所述光取出层包括第一光取出层和第二光取出层,所述第一光取出层和所述第二光取出层在所述衬底基板上的正投影重合。
- 根据权利要求5所述的显示基板,其中,所述光取出层包括第一光取出层和第二光取出层,所述第二光取出层在所述衬底基板上的正投影覆盖多个像素在所述衬底基板上的正投影。
- 一种显示装置,包括如权利要求1-17中任一项所述显示装置。
- 一种显示基板的制作方法,包括:在衬底基板上形成阵列排布的多个像素;在所述像素远离所述衬底基板的一侧形成遮光图形,所述遮光图形在所述衬底基板上的正投影与相邻像素之间的间隙在所述衬底基板上的正投影存在重叠;在所述像素的出光侧、所述遮光图形靠近所述衬底基板的一侧形成光取出结构,所述光取出结构的出光方向为所述光取出结构远离所述像素的方向,所述光取出结构在所述衬底基板上的正投影与所述像素在所述衬底基板上的正投影存在重叠。
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