CN111403628B - Display substrate and display device - Google Patents
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- CN111403628B CN111403628B CN202010229049.XA CN202010229049A CN111403628B CN 111403628 B CN111403628 B CN 111403628B CN 202010229049 A CN202010229049 A CN 202010229049A CN 111403628 B CN111403628 B CN 111403628B
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- 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
- H10K50/805—Electrodes
- H10K50/81—Anodes
- H10K50/813—Anodes characterised by their shape
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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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
Abstract
The invention provides a display substrate and a display device, and belongs to the technical field of display. The display substrate comprises a plurality of pixel units arranged in an array mode and located on the substrate base plate, each pixel unit comprises a plurality of pixels with different colors, each pixel comprises an anode, a cathode and a light emitting layer located between the anode and the cathode, the anode of each pixel comprises a plurality of mutually independent sub-anodes, the sub-anodes are different in orthographic projection on the substrate base plate and do not overlap with each other, the sub-anodes are N sub-anode groups, the 1 st sub-anode group is in a block shape, the 2 nd sub-anode group to the Nth sub-anode group are in an annular shape, the ith sub-anode group surrounds the (i-1) th sub-anode group, i is an integer larger than or equal to 1 and smaller than or equal to N, and N is an integer larger than 1. The technical scheme of the invention can improve the naked eye 3D display effect.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display substrate and a display device.
Background
The naked-eye 3D display technology mainly comprises a holographic 3D display technology, a volume 3D display technology, an auto-stereoscopic 3D display technology and the like. Among them, the autostereoscopic 3D display technology has been considered as a naked eye 3D display technology that is most likely to be commercially popularized due to its capability of obtaining a three-dimensional display effect of dynamic, color, and a large field angle. The autostereoscopic 3D display technology includes a naked eye 3D display technology based on geometric optics, such as a lenticular lens array technology, a parallax barrier technology, a microlens array technology, and the like. The technology is mainly based on the principles of linear propagation, reflection, refraction and the like of light rays, through the structural design, the emergent direction of each pixel in the display screen is changed, and each visual angle image is projected to different viewpoint positions, so that different visual angle images can be seen by the left eye and the right eye of a person, and the stereoscopic vision is formed.
Based on the existing display products, especially the mobile phone display screen, the naked-eye 3D display effect is realized, the defects of low PPI (pixel density), small information amount, small 3D visual angle and the like exist, the dizziness of people is easy to generate, and the user experience is not good.
Disclosure of Invention
The invention aims to provide a display substrate and a display device, which can improve the naked-eye 3D display effect.
To solve the above technical problem, embodiments of the present invention provide the following technical solutions:
in one aspect, a display substrate is provided, which includes a plurality of pixel units arranged in an array on a substrate, each pixel unit includes a plurality of pixels with different colors, each pixel includes an anode, a cathode and a light emitting layer between the anode and the cathode, the anode of each pixel includes a plurality of mutually independent sub-anodes, the sub-anodes are different in orthographic projection on the substrate and do not overlap with each other, the sub-anodes are N sub-anode groups, the 1 st sub-anode group is in a block shape, the 2 nd sub-anode group to the nth sub-anode group are in a ring shape, the ith sub-anode group surrounds the (i-1) th sub-anode group, i is an integer greater than or equal to 1 and less than or equal to N, and N is an integer greater than 1.
In some embodiments, different sub-anode groups are located on different planes.
In some embodiments, an orthogonal projection of an inner contour of the i-th sub-anode group on the substrate base plate coincides with an orthogonal projection of an outer contour of the i-1-th sub-anode group on the substrate base plate.
In some embodiments, the angle formed by the plane of the i-th sub-anode set and the horizontal plane is greater than 0 degrees and smaller than 90 degrees.
In some embodiments, the display substrate includes an insulating layer on a side of the anode facing the substrate, a side of the insulating layer facing the anode is in an annular step structure, and different sub-anode groups are located on different step surfaces.
In some embodiments, the included angle between the step slope surface of the step structure and the step surface is greater than 0 ° and less than 180 °.
In some embodiments, each of the sub-anode groups includes M mutually independent sub-anodes, where M is an integer greater than 1.
In some embodiments, each of the sub-anode groups comprises four mutually independent sub-anodes, and the four sub-anodes are symmetrically distributed relative to a first central line of the pixel and symmetrically distributed relative to a second central line of the pixel, and the second central line is perpendicular to the first central line.
In some embodiments, the first sub-anode set is hexagonal, and the annular sub-anode set is hexagonal and annular; or
The first sub-anode group is circular, and the annular sub-anode group is circular and annular; or
The first sub-anode group is in a rhombus shape, and the annular sub-anode group is in a rhombus annular shape; or
The first sub-anode group is square, and the annular sub-anode group is square and annular.
Embodiments of the present invention also provide a display device, including the display substrate as described above.
In some embodiments, the display device further comprises:
the packaging layer is positioned on one side of the cathode, which is far away from the substrate base plate;
the optical adhesive layer is positioned on one side of the packaging layer, which is far away from the substrate base plate;
the flat layer is positioned on one side of the optical adhesive layer, which is far away from the substrate base plate;
the optical element layer is positioned on one side, away from the substrate base plate, of the flat layer and comprises a plurality of convex lenses, the convex lenses correspond to the pixels one to one, and the orthographic projections of the centers of the convex lenses on the substrate base plate coincide with the orthographic projections of the centers of the corresponding pixels on the substrate base plate.
The embodiment of the invention has the following beneficial effects:
in the scheme, the anode of each pixel comprises a plurality of mutually independent sub-anodes, orthographic projections of different sub-anodes on the substrate are not overlapped, the plurality of sub-anodes are divided into a blocky 1 st sub-anode group and N-2 annular sub-anode groups, each sub-anode corresponds to an independently controlled sub-pixel, and display switching between 2D and naked eye 3D can be realized by controlling gray scale and light beam emergent direction of the sub-pixels in the pixel; the sub-anode group adopts an annular structure, and the annular sub-anode group is divided, so that the maximum number of sub-anodes can be obtained by the minimum dividing times, and the pixel density can be effectively improved; in addition, the sub-anode group adopts an annular structure, can be compatible with a 3D display horizontal screen and a 3D display vertical screen by 360 degrees, can form a plurality of 3D visual areas, and is continuous at the optimal viewing distance.
Drawings
FIG. 1 is a schematic diagram of spatial multiplexing of dual view points;
FIG. 2 is a schematic diagram of a pixel according to an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of a pixel in the AA direction according to an embodiment of the present invention;
FIG. 4 is a schematic perspective view of a pixel according to an embodiment of the invention;
FIG. 5 is a diagram of a pixel unit according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a pixel unit in the AA direction according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a pixel according to another embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The naked-eye 3D display technology mainly comprises a holographic 3D display technology, a volume 3D display technology, an auto-stereoscopic 3D display technology and the like. Among them, the autostereoscopic 3D display technology has been considered as a naked eye 3D display technology that is most likely to be commercially popularized due to its ability to obtain dynamic, color, and large-field-angle three-dimensional display effects. The autostereoscopic 3D display technology includes a naked eye 3D display technology based on geometric optics, such as a lenticular lens array technology, a parallax barrier technology, a microlens array technology, and the like. The technology is mainly based on the principles of linear propagation, reflection, refraction and the like of light rays, through the structural design, the emergent direction of each pixel in the display screen is changed, and each visual angle image is projected to different viewpoint positions, so that different visual angle images can be seen by the left eye and the right eye of a person, and the stereoscopic vision is formed.
It is generally required to display a multi-viewpoint image having parallax on an optical screen for naked eye 3D display. The optical separation component separates a plurality of viewpoint images displayed on the screen into different visual areas, a viewer can only observe one viewpoint image in a certain visual area, and when the left eye and the right eye of the viewer are positioned in the left visual area and the right visual area at the same time, the horizontal parallax between the left viewpoint image and the right viewpoint image is fused by the brain to generate correct depth information. The autostereoscopic display technology may interleave and draw a multi-view image by spatial multiplexing, that is, a plurality of view images are respectively divided into a plurality of strip-shaped sub-images, and then the strip-shaped sub-images are interleaved (a part of the strip-shaped sub-images are sequentially selected from each view image according to a certain rule) to be combined into a single image and displayed stereoscopically, as shown in fig. 1.
Based on the existing display products, especially the mobile phone display screen realizes the naked eye 3D display effect, the defects of low PPI, less information amount, small 3D visual angle and the like exist, the dizziness is easy to generate for people, and the user experience is not good. In order to solve the problems of the mobile phone naked eye 3D display technology, RGB pixels can be patterned again, and high-resolution naked eye 3D display is achieved through the laminated anode structure design. However, when the anode of the RGB pixel is divided, there are too many dividing lines of the subdivided sub-pixels, too many gaps (spaces) between the anodes of the subdivided sub-pixels, and large spaces (blank areas), which is easy to generate poor moire; and the design of the sub-pixel anode by the laminated anode structure is difficult to realize seamless splicing, and the process is more limited.
The embodiment of the invention provides a display substrate and a display device, which can improve the naked-eye 3D display effect.
The embodiment of the invention provides a display substrate, which comprises a plurality of pixel units arranged in an array manner, wherein each pixel unit comprises a plurality of pixels with different colors, each pixel comprises an anode, a cathode and a light-emitting layer, the light-emitting layer is positioned between the anode and the cathode, the anode of each pixel comprises a plurality of mutually independent sub-anodes, orthographic projections of the different sub-anodes on the substrate do not overlap with each other, the sub-anodes are divided into N sub-anode groups, the 1 st sub-anode group is in a block shape, the 2 nd sub-anode group to the Nth sub-anode group are in a ring shape, the i th sub-anode group surrounds the i th to 1 st sub-anode group, i is an integer which is greater than 1 and less than or equal to N, and N is an integer which is greater than 1.
In this embodiment, the anode of each pixel includes a plurality of mutually independent sub-anodes, orthographic projections of different sub-anodes on the substrate do not overlap with each other, the plurality of sub-anodes are divided into a 1 st block-shaped sub-anode group and N-2 annular sub-anode groups, each sub-anode corresponds to an independently controlled sub-pixel, and display switching between 2D and naked eye 3D can be realized by controlling gray scale and light beam emergent direction of the sub-pixels in the pixel.
If the sub-anode groups are rectangular, each pixel comprises two parallel rectangular sub-anode groups, the eight mutually independent sub-anodes can be obtained only by dividing the two sub-anode groups at least three times, and if each pixel comprises a block-shaped sub-anode group and an annular sub-anode group, the annular sub-anode group surrounds the block-shaped sub-anode group, and the eight mutually independent sub-anodes can be obtained by dividing the two sub-anode groups twice. Therefore, the sub-anode group adopts an annular structure, and the annular sub-anode group is divided, so that the maximum number of sub-anodes can be obtained by the minimum dividing times, and the pixel density can be effectively improved; in addition, the sub-anode group adopts an annular structure, can be compatible with a 3D display horizontal screen and a 3D display vertical screen by 360 degrees, can form a plurality of 3D visual areas, and is continuous at the optimal viewing distance.
In some embodiments, different sub-anode groups are located on different planes. If different sub-anode groups are located on the same plane, in order to guarantee mutual independence between the sub-anode groups, need set up the clearance between adjacent sub-anode groups, can lead to gap too much between the sub-pixel positive pole like this, space is big, it is bad to produce mole line easily, and in this embodiment, different sub-anode groups are located different planes, need not to set up the mutual independence between the sub-anode group so between adjacent sub-anode group can guarantee the sub-anode group in the clearance on the horizontal direction, can reduce the blank clearance between adjacent sub-anode groups, effectively increase pixel sub-pixel's effective light-emitting area.
In some embodiments, an orthogonal projection of the inner contour of the ith sub-anode group on the substrate base plate is coincident with an orthogonal projection of the outer contour of the (i-1) th sub-anode group on the substrate base plate, so that the sub-anode groups can be independently controlled and connected seamlessly.
In some embodiments, an included angle formed by a plane where the ith sub-anode group is located and a horizontal plane is larger than 0 degree and smaller than 90 degrees, namely, the sub-anodes form a terrace type sub-pixel subdivision structure, and a three-dimensional micro-lens structure is combined to realize naked eye 3D, so that the micro-anode display device can be compatible with a 3D display transverse screen and a 3D display longitudinal screen by 360 degrees, a plurality of 3D visual areas can be formed, and the micro-anode display device is continuous at the optimal viewing distance.
In some embodiments, the display substrate includes an insulating layer on a side of the anode facing the substrate, a surface of the insulating layer facing the anode is in an annular step structure, and different sub-anode groups are located on different step surfaces, so as to implement an annular sub-anode group.
In some embodiments, the included angle between the step slope surface of the step structure and the step surface is greater than 0 ° and less than 180 °.
In some embodiments, the first sub-anode set may have a hexagonal shape, and the ring-shaped sub-anode set may have a hexagonal ring shape; or
The first sub-anode group can be circular, and the annular sub-anode group can be circular and annular; or
The first sub-anode group can be in a rhombus shape, and the annular sub-anode group can be in a rhombus annular shape; or
The first sub-anode group may be square, and the annular sub-anode group may be square and annular.
In one embodiment, as shown in fig. 5 and 6, each pixel unit includes three pixels a, B and C with different colors, where the pixel a may be a red pixel, the pixel B may be a green pixel, and the pixel C may be a blue pixel. As shown in fig. 2-4, the anode of each pixel is divided into four sub-anode groups: the structure comprises a first sub-anode group 4, a second sub-anode group 3, a third sub-anode group 2 and a fourth sub-anode group 1, wherein the first sub-anode group 4 is hexagonal, the second sub-anode group 3, the third sub-anode group 2 and the fourth sub-anode group 1 are hexagonal rings, the second sub-anode group 3 surrounds the first sub-anode group 4, the third sub-anode group 2 surrounds the second sub-anode group 3, and the fourth sub-anode group 1 surrounds the third sub-anode group 2,5 which is a gap between the sub-anode groups.
As shown in fig. 3, the insulating layer 8 may be designed as a terrace structure, and the sub-anode groups are formed on the terrace structure, wherein the insulating layer 8 may be independent of the planarization layer 7 or the pixel defining layer 9, or may be integrated with the planarization layer 7 or the pixel defining layer 9, and wherein 6 includes a substrate and a thin film transistor circuit disposed on the substrate.
Wherein t1, t2 and t3 are the heights of the steps, α 1, α 2 and α 3 are included angles between the annular sub-anode groups and a horizontal plane, the area Si of each sub-anode group can be set according to optical design requirements, α 1, α 2 and α 3 can be set according to optical design requirements and process capability, and the value range is 0-90 °. The step angle beta fibril is set according to the technological capacity and the disconnection condition between the sub-anode groups, and the value range is 0-180 degrees.
In some embodiments, the sub-anode groups may be further divided, and each of the sub-anode groups may include M mutually independent sub-anodes, where M is an integer greater than 1, so as to further increase the pixel density of the display substrate.
In some embodiments, the pixels may be divided laterally or longitudinally as desired. In a specific example, as shown in fig. 7, each of the sub-anode groups includes four mutually independent sub-anodes, and the four sub-anodes are symmetrically distributed with respect to a first central line of the pixel and symmetrically distributed with respect to a second central line of the pixel, and the second central line is perpendicular to the first central line. Wherein, first central line and second central line all lie in the horizontal plane.
In the embodiment, the anodes in the pixels with different colors are patterned, and the anodes of the pixels are divided into a plurality of independent terrace-type structures, so that the division number of sub-pixels in the sub-pixels is maximized, the resolution of the 3D display substrate is improved, and the image quality of 3D display is improved; meanwhile, continuous light emission in the sub-pixels can be realized, and the phenomenon that serious Moire effect is generated due to the fact that the OLED pixels are placed on the focal plane of the micro-lens can be avoided. It is noted that the display substrate of the present embodiment is an OLED display substrate.
Embodiments of the present invention also provide 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, and power supply. It will be appreciated by those skilled in the art that the above described configuration of the display device does not constitute a limitation of the display device, and that the display device may comprise more or less of the components described above, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, 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: the display device comprises a television, a display, a digital photo frame, a mobile phone, a tablet personal computer and any other product or component with a display function, wherein the display device further comprises a flexible circuit board, a printed circuit board and a back plate.
In some embodiments, as shown in fig. 6, the display device further includes:
the light-emitting layer 10 is positioned on one side of the sub-anode group, which is far away from the substrate;
a cathode 11 located on the side of the light-emitting layer 10 away from the substrate;
the encapsulation layer 12 is positioned on one side of the cathode 11, which is far away from the substrate base plate;
the optical adhesive layer 13 is positioned on one side of the packaging layer 12 far away from the substrate base plate;
the flat layer 14 is positioned on one side of the optical adhesive layer 13 far away from the substrate;
and the optical element layer 15 is positioned on one side of the flat layer 14, which is far away from the substrate base plate, and the optical element layer 15 is used for changing the direction of emergent rays of the pixel.
In a specific example, as shown in fig. 6, the optical element layer 15 may include a plurality of convex lenses, the convex lenses correspond to the pixels one by one, and an orthographic projection of centers of the convex lenses on the substrate coincides with an orthographic projection of centers of corresponding pixels on the substrate.
The emergent direction of each pixel in the display substrate is changed through the convex lens, and each visual angle image is projected to different viewpoint positions, so that different visual angle images can be seen by the left eye and the right eye of a person, stereoscopic vision is formed, and naked eye 3D is achieved.
It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the embodiments, since they are substantially similar to the product embodiments, the description is simple, and the relevant points can be referred to the partial description of the product embodiments.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and the like in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a display substrate, includes the pixel unit that is located a plurality of arrays arrangements on the substrate base plate, and each pixel unit includes the pixel of a plurality of different colours, its characterized in that, the pixel includes positive pole, negative pole and is located the luminescent layer between positive pole and the negative pole, and the positive pole of each pixel includes a plurality of mutually independent sub-anodes, and is different the sub-anode is in orthographic projection on the substrate base plate does not overlap each other, and a plurality of sub-anodes divide into N sub-anode group, and 1 st sub-anode group is the cubic, and 2 nd sub-anode group-N sub-anode group are cyclic annular, and the ith sub-anode group surrounds ith-1 st sub-anode group, and i is for being greater than 1 and being less than or equal to the integer of N, and N is for being greater than 1 integer, and the plane that ith sub-anode group belongs to becomes the contained angle with the horizontal plane and is greater than 0 and is less than 90.
2. The display substrate of claim 1 wherein different sets of sub-anodes are located on different planes.
3. The display substrate of claim 1, wherein an orthographic projection of an inner contour of an i-th sub-anode group on the substrate coincides with an orthographic projection of an outer contour of an i-1 th sub-anode group on the substrate.
4. The display substrate according to claim 1, wherein the display substrate comprises an insulating layer on a side of the anode facing the substrate, a side of the insulating layer facing the anode has a ring-shaped step structure, and different sub-anode groups are located on different step surfaces.
5. The display substrate of claim 4, wherein an angle between the step slope surface of the step structure and the step surface is greater than 0 ° and less than 180 °.
6. The display substrate according to any one of claims 1 to 5, wherein each of the sub-anode groups comprises M mutually independent sub-anodes, M being an integer greater than 1.
7. The display substrate of claim 6,
each sub-anode group comprises four mutually independent sub-anodes, the four sub-anodes are symmetrically distributed relative to a first central line of the pixel and symmetrically distributed relative to a second central line of the pixel, and the second central line is perpendicular to the first central line.
8. The display substrate according to any one of claims 1 to 5,
the 1 st sub-anode group is hexagonal, and the annular sub-anode group is hexagonal and annular; or
The 1 st sub-anode group is circular, and the annular sub-anode group is circular and annular; or
The 1 st sub-anode group is in a rhombus shape, and the annular sub-anode group is in a rhombus annular shape; or
The 1 st sub-anode group is square, and the annular sub-anode group is square and annular.
9. A display device comprising the display substrate according to any one of claims 1 to 8.
10. The display device according to claim 9, further comprising:
the packaging layer is positioned on one side of the cathode, which is far away from the substrate base plate;
the optical adhesive layer is positioned on one side, far away from the substrate, of the packaging layer;
the flat layer is positioned on one side of the optical adhesive layer, which is far away from the substrate base plate;
the optical element layer is positioned on one side, away from the substrate, of the flat layer and comprises a plurality of convex lenses, the convex lenses correspond to the pixels one to one, and the orthographic projection of the centers of the convex lenses on the substrate coincides with the orthographic projection of the centers of the corresponding pixels on the substrate.
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| CN110808274A (en) * | 2019-11-14 | 2020-02-18 | 京东方科技集团股份有限公司 | Preparation method of display panel, display panel and display device |
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| CN110808274A (en) * | 2019-11-14 | 2020-02-18 | 京东方科技集团股份有限公司 | Preparation method of display panel, display panel and display device |
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