CN117356187A

CN117356187A - Display panel and display device

Info

Publication number: CN117356187A
Application number: CN202180098222.XA
Authority: CN
Inventors: 骆欣涛; 西泽真人; 境川亮
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2024-01-05
Also published as: WO2022241786A1

Abstract

The application discloses display panel and display device optimizes the display panel and corresponds the display pixel position of the first display area of screen camera down, regard as a repeated optical unit with upper and lower left and right two adjacent at least first pixels, suitably adjust the position of single subpixel in repeated optical unit, under the prerequisite that does not surpass original first pixel scope, a plurality of subpixels are located the summit of first polygon structure, the design of electrode wiring, with the electrode wiring be general with the extending direction on the limit of first polygon structure the same, at least four subpixels and electrode wiring locate the position be the opaque region, the regional inside of being enclosed by at least four subpixels and electrode wiring forms the light transmission district of area great, the distance between the opaque region is pulled out in row direction and row direction, effectively restrain high order optical diffraction, relatively strengthen low order diffraction, and diffraction light energy concentrates to the region in relative center, the diffraction light is isotropic, obviously promote the imaging effect of screen camera down.

Description

Display panel and display device

Technical Field

The application relates to the technical field of display, in particular to a display panel and a display device.

Background

With the development of consumer electronics technology and the diversification of products, enhancing user experience has become one of the main objectives in the consumer electronics field. In the process of pursuing consumption experience, the display effect is increasingly valued by industries. With this, how to increase the screen ratio of consumer electronic products, and even the overall screen design, has become a popular topic in the industry, and various large screen factories and brands are actively exploring related technologies in the field.

The biggest technical challenge in limiting the overall screen design is the processing and design of the front camera. The mature technical scheme at the present stage is that the special-shaped screen design shown in the reference figure 1a, the screen punching shown in the reference figure 1b and the like are adopted, and the screen occupation ratio can be improved to more than 90% through the design. However, such design schemes still need to consider design avoidance of the front camera, and cannot achieve a real full screen experience effect.

Different from such front camera avoiding design scheme, an under-screen camera shooting technology is proposed in the industry, and referring to fig. 2, a camera is arranged below a screen, and the camera shoots and images through the screen. The under-screen camera shooting technology fundamentally realizes the display effect of the full screen, and greatly improves the use experience of consumers. However, the camera is limited by the prior art, and because the camera shoots and images through the screen, the structure and the pixel design of the screen can cause extra optical diffraction, and the imaging effect of the camera is greatly affected. Therefore, compared with the original front-end camera avoiding design scheme, the photographing effect of the under-screen camera is lost to a certain extent, and the extreme experience cannot be achieved. Therefore, various large screen factories and brands in the industry are actively exploring novel technical schemes so as to reduce the optical diffraction phenomenon caused by screens.

Disclosure of Invention

The embodiment of the application provides a display panel and a display device for reduce the diffraction problem of camera optical imaging under the screen, promote the imaging quality of camera under the screen.

In a first aspect, the present application provides a display panel, where a display area of the display panel is divided into a first display area and a second display area surrounding the first display area, where the first display area has a light-transmitting area therein; the first display area of the display panel comprises: the display device comprises a plurality of first pixels arranged in an array, wherein each first pixel comprises at least two sub-pixels with different display colors and electrode wires connected with the sub-pixels respectively; at least two first pixels adjacent in the row direction and/or the column direction form a repeated optical unit in the plurality of first pixels arranged in an array; at least four sub-pixels are included in one repeating optical unit, the at least four sub-pixels are sequentially connected end to end in sequence to form a first polygonal structure, and the at least four sub-pixels are respectively located at the vertexes of the first polygonal structure; the electrode wire extends along the direction of the side forming the first polygonal structure, the opaque region in the first display region comprises a region where the electrode wire is located and a region where the sub-pixel is located, and the transparent region comprises an inner region surrounded by at least four sub-pixels and the electrode wire.

In the display panel provided by the application, the arrangement position of the display pixels of the first display area is optimized, at least two first pixels which are adjacent to each other in the vertical direction are used as a repeated optical unit, the positions of the single sub-pixels are properly adjusted in the repeated optical unit, the sub-pixels are located at the top points of the first polygonal structure on the premise that the positions do not exceed the range of the original first pixels, the electrode wiring is matched with the design of the electrode wiring, the extending direction of the electrode wiring is approximately the same as that of the edge of the first polygonal structure, the inside of the area surrounded by at least four sub-pixels and the electrode wiring is a light transmission area, the optical imaging of the under-screen camera can be realized, and the positions of the at least four sub-pixels and the electrode wiring are light-tight areas. The pixel arrangement design forms a light transmission area with larger area, and meanwhile, the distance between the light-tight areas is increased in the row direction and the column direction, so that the high-order optical diffraction is effectively inhibited, the low-order diffraction is relatively enhanced, the diffracted light energy is concentrated to the area in the relative center, and the diffracted light is isotropic, so that the imaging effect of the under-screen camera is obviously improved.

In one possible implementation manner of the present application, two repeating optical units adjacent in a row direction or a column direction are provided with a plurality of adjacent sub-pixels, the plurality of sub-pixels are sequentially connected end to end in sequence to form a second polygonal structure, and the plurality of sub-pixels are respectively located at the top points of the second polygonal structure; the electrode wirings connected to the plurality of sub-pixels extend along the directions of the sides constituting the second polygonal structure. In this way, a first polygonal structure with light transmission inside can be formed between four repeated optical units adjacent to each other in the row direction and the column direction, so as to improve the distribution density of the light transmission areas.

In one possible implementation manner of the application, the light-transmitting area further includes an inner area surrounded by a plurality of sub-pixels and electrode wires, so as to increase the area proportion of the light-transmitting area of the first display area and improve the optical imaging brightness of the under-screen camera.

In one possible implementation manner of the present application, the first polygonal structure has a plurality of pairs of sides parallel to each other, and a column spacing is provided between a pair of sides extending along the row direction, and a row spacing is provided between a pair of sides extending along the column direction, and the row spacing in one repeating optical unit is equal to the column spacing, so as to balance the distance between the opaque regions in the row direction and the column direction, so that high-order optical diffraction in both the row direction and the column direction can be effectively suppressed.

In one possible implementation of the present application, the line spacing between two repeating optical units adjacent in the line direction is the same; the column spacing between two adjacent repeated optical units in the column direction is the same so as to balance the optical diffraction effect of each repeated optical unit in each direction and ensure the uniformity of the imaging effect of the under-screen camera in each area in the first display area.

In one possible implementation of the present application, two repetitive optical units adjacent in a diagonal direction share one first pixel; the row spacing and the column spacing between two adjacent repeated optical units in the diagonal direction are different from each other so as to break the arrangement balance of all the sub-pixels forming the octagonal structure in the diagonal direction, so that the sub-pixels are in non-long range order in the diagonal direction, and the optimization effect on the optical diffraction of the under-screen camera is further realized.

In one possible implementation manner of the present application, in one repeating optical unit, electrode traces respectively connected to at least four sub-pixels are straight lines and parallel to sides of the first polygonal structure; or, in a repeating optical unit, the electrode wires respectively connected with at least four sub-pixels are straight lines, and the edges of the electrode wires and the first polygonal structure are provided with set inclined angles, so that the parallel straight lines at the positions of the opposite edges of the electrode wires are changed into non-parallel straight lines, and the strong diffraction phenomenon caused by the long-range ordered structure of the electrode wires in parallel design is reduced; or, in the repeating optical unit, the electrode wires respectively connected with at least four sub-pixels are curved, and the electrode wires are changed from parallel straight lines at opposite side positions to non-parallel curves, so that strong diffraction phenomenon caused by long-range ordered structures of the electrode wires in parallel design is reduced.

In one possible implementation of the present application, in one repeating optical unit, the area enclosed by the curved electrode trace and at least four sub-pixels is substantially circular. In addition, the curvature of the electrode wire can be further adjusted, so that the electrode wire has different curvature designs relative to the central symmetry position of the first polygonal structure, and the diffraction effect can be further reduced.

In one possible implementation manner of the present application, the first display area of the display panel may further include: and a shading layer covering each sub-pixel and each electrode wire, wherein the shading layer is provided with a circular opening in the light transmission area. The shape of the light-transmitting area can be modified by shielding the light shielding layer, for example, the light-transmitting area is designed to be round, so that the diffraction effect is further reduced.

In one possible implementation of the present application, the light shielding layer may be made of a material having a certain light transmittance, and the light transmittance of the light shielding layer may take a value in a range of 1% to 99%. At this time, the sub-pixel covered by the light shielding layer and the area where the electrode trace is located are opaque areas, and other light shielding layers can be regarded as semi-opaque areas, and can also play a role in reducing diffraction effects.

In one possible implementation manner of the present application, the second display area of the display panel includes: the second pixels are arranged in an array, in order to realize high-resolution display, the pixel arrangement mode of the second display area is different from that of the first display area, and each second pixel comprises at least two sub-pixels which are different in display color and are arranged along the row direction or the column direction.

In one possible implementation of the present application, the sub-pixel includes a light emitting device and an electrode connected to the light emitting device, and the electrode trace is connected to the electrode to apply an external driving signal to the electrode to drive the light emitting device to display a corresponding color.

In one possible implementation of the present application, the light emitting device is an organic light emitting diode or a micro light emitting diode.

In one possible implementation manner of the present application, the first pixels are designed by adopting SPR pixels, each first pixel may include two sub-pixels with different display colors, four first pixels adjacent in a row direction and a column direction form a repeating optical unit, each repeating optical unit includes eight sub-pixels, and the eight sub-pixels are sequentially connected end to end in sequence to form an octagonal structure, and the eight sub-pixels are respectively located at vertices of the octagonal structure.

In one possible implementation manner of the present application, in order to improve display resolution, each first pixel includes two sub-pixels with different display colors, one of the two first pixels adjacent in a row direction or a column direction includes a first display color sub-pixel and a second display color sub-pixel, and the other first pixel includes a first display color sub-pixel and a third display color sub-pixel.

In one possible implementation of the present application, since the human eye is insensitive to green, the proportion of green sub-pixels can be increased when the SPR pixel design is adopted, the first display color sub-pixel is a green sub-pixel, the second display color sub-pixel is a red sub-pixel, and the third display color sub-pixel is a blue sub-pixel. Thus, in the row direction and the column direction, the first pixels having the blue sub-pixels and the green sub-pixels and the first pixels having the red sub-pixels and the green sub-pixels are alternately arranged.

In a second aspect, the present application further provides a display device, including: the display panel and the camera are arranged below a first display area of the display panel.

According to the display panel and the display device, the arrangement positions of the display pixels of the first display area of the corresponding under-screen camera in the display panel are optimized, at least two first pixels which are adjacent to each other in the upper, lower, left and right directions are used as a repeated optical unit, the positions of the single sub-pixels are properly adjusted in the repeated optical unit, the sub-pixels are located at the top of the first polygonal structure on the premise that the positions do not exceed the range of the original first pixels, the electrode wiring is matched with the design of the electrode wiring, the electrode wiring is approximately identical to the extending direction of the edge of the first polygonal structure, a light transmission area is formed inside an area surrounded by at least four sub-pixels and the electrode wiring, optical imaging of the under-screen camera can be achieved, and the positions of the at least four sub-pixels and the electrode wiring are light-tight areas. The pixel arrangement design forms a light transmission area with larger area, and meanwhile, the distance between the light-tight areas is increased in the row direction and the column direction, so that the high-order optical diffraction is effectively inhibited, the low-order diffraction is relatively enhanced, the diffracted light energy is concentrated to the area in the relative center, and the diffracted light is isotropic, so that the imaging effect of the under-screen camera is obviously improved.

Drawings

FIG. 1a is a schematic diagram of a handset with a shaped screen design;

FIG. 1b is a schematic diagram of a mobile phone with a screen perforation design;

FIG. 2 is a schematic diagram of a mobile phone with an under-screen camera design;

fig. 3 is a schematic top view of a display device according to an embodiment of the disclosure;

fig. 4 is a schematic cross-sectional structure of a display device according to an embodiment of the disclosure;

FIG. 5 is a schematic diagram illustrating a pixel arrangement in a first display area of a display panel according to an embodiment of the disclosure;

FIG. 6 is a schematic diagram of an optical diffraction simulation of a conventional pixel arrangement;

FIG. 7 is a schematic diagram of an optical diffraction simulation using the pixel arrangement of FIG. 5;

FIG. 8 is a schematic diagram illustrating a pixel arrangement in a first display area of a display panel according to another embodiment of the disclosure;

FIG. 9a is a schematic diagram of an optical diffraction simulation using the pixel arrangement of FIG. 5;

FIG. 9b is a schematic diagram of an optical diffraction simulation using the pixel arrangement of FIG. 8;

FIG. 10 is a schematic diagram illustrating a pixel arrangement in a first display area of a display panel according to another embodiment of the disclosure;

FIG. 11 is a schematic diagram illustrating a pixel arrangement in a first display area of a display panel according to another embodiment of the disclosure;

FIG. 12 is a schematic diagram illustrating a pixel arrangement in a first display area of a display panel according to another embodiment of the disclosure;

FIG. 13 is a schematic diagram illustrating a pixel arrangement in a first display area of a display panel according to another embodiment of the disclosure;

FIG. 14 is a schematic diagram illustrating a pixel arrangement in a first display area of a display panel according to another embodiment of the disclosure;

FIG. 15 is a schematic view of a portion of a pixel arrangement in a first display area of a display panel according to another embodiment of the present disclosure;

fig. 16 is a schematic partial view of a pixel arrangement in a second display area of a display panel according to an embodiment of the disclosure.

Reference numerals:

01-a display panel; 02-a camera; 03-a first optical adhesive; 04-circular polarizer; 05-a second optical adhesive; 06-cover plate; 11-a first display area; 12-a second display area; 21-a first pixel; 22-a second pixel; 31-electrode wiring; 111-light-transmitting region; 112-a light shielding layer; 211-subpixels; a-a first display color sub-pixel; b-a second display color sub-pixel; c-a third display color sub-pixel; a and a' -row spacing; b and B' -column spacing; f-repeating the optical unit; x-row direction; y-column direction.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings.

The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include, for example, "one or more" such forms of expression, unless the context clearly indicates to the contrary.

Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.

In addition, the same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted. The words expressing the positions and directions described in the present application are described by taking the drawings as an example, but can be changed according to the needs, and all the changes are included in the protection scope of the present application. The drawings of the present application are merely schematic representations, not to scale.

The display panel and the display device provided by the embodiment of the application can be applied to various terminal devices, such as electronic devices with camera shooting functions, including smart phones, tablet computers, palm computers (personal digital assistant, PDA) and the like. It should be noted that the display panel and the display device proposed in the embodiments of the present application are intended to include, but are not limited to, application in these and any other suitable types of terminal devices.

Key terms used in the following description are explained below.

Screen ratio: the method is used for representing the relative ratio of the screen area to the mobile phone front panel area, and the calculation formula is as follows: screen ratio = front screen area/total area.

Resolution ratio: the precision of the screen image refers to how many pixels the display can display.

Sub-pixel rendering (SPR): is one way to increase the apparent resolution of the display by rendering pixels to account for the physical characteristics of the screen type. It makes use of the fact that each pixel on a color display screen is composed of separate red, green and blue or other colored sub (sub) pixels, thereby eliminating more detailed jagged text or increasing the resolution of all image types on the layout designed to render with the sub-pixels.

The display panel and the display device provided in the present application are described in detail below with reference to the accompanying drawings.

Fig. 3 schematically illustrates a top view structure of a display device provided in an embodiment of the present application, and fig. 4 schematically illustrates a cross-sectional structure of a display device provided in an embodiment of the present application. Referring to fig. 3 and 4, in one embodiment of the present application, in order to implement a full screen display function, a display apparatus includes: a display panel 01 having a first display area 11 and a second display area 12 surrounding the first display area 11, and a camera 02 disposed below the first display area 11 of the display panel 01. The first display area 11 occupies a smaller area in the display area of the display panel 01, and may be referred to as a sub-screen, where the sub-screen has a certain light transmission characteristic, so that imaging by the camera under the screen can be achieved. The second display area 12 has a larger area in the display area of the display panel 01, and may be referred to as a main screen, having display pixels for realizing a conventional display function. Meanwhile, the auxiliary screen comprises a plurality of display pixels for realizing the conventional display function, and can realize a display picture synchronous with the main screen.

In this embodiment of the present application, the sub-screen (the first display area 11) has a completely different display pixel arrangement and wiring design from the existing main screen (the second display area 12), so that high-order diffraction in the imaging process of the camera can be reduced, thereby improving the imaging effect of the under-screen camera. For convenience of description, the display pixels disposed in the first display area 11 are referred to as first pixels 21, and the display pixels disposed in the second display area 12 are referred to as second pixels 22. The detailed arrangement and wiring design of the first and second pixels 21 and 22 are described in detail in a display panel provided in the present application below.

Referring to fig. 4, in this embodiment of the present application, a circular polarizer 04 (circular-polarizing filters, c-Pol) is typically attached to the surface of the display panel 01 through a first optical adhesive 03 to reduce reflection of ambient light. And, attach apron 06 through second optical cement 05 on the circular polaroid, play the guard action. The cover 06 may be a glass cover or a resin cover, and the material of the cover is not limited. Other components included in the display device are not described in detail herein.

The pixel arrangement mode and the routing design of the display panel provided in the embodiment of the application are described in detail below.

Fig. 5 is a schematic partial view illustrating a pixel arrangement in a first display area in a display panel according to an embodiment of the present application. Referring to fig. 5, in one embodiment of the present application, the first display area 11 of the display panel 01 includes: a plurality of first pixels 21 (minimum rectangle outlined by dotted line in fig. 5) arranged in an array, each first pixel 21 includes at least two sub-pixels 211 having different display colors (sub-pixels 211 having different display colors are indicated by different filling patterns in fig. 5, sub-pixels 211 having the same display colors are indicated by the same filling patterns), and electrode wirings 31 respectively connected to the sub-pixels 211. Among the plurality of first pixels 21 arranged in an array, at least two first pixels 21 adjacent in the row direction X and/or the column direction Y form a repeating optical unit F, for example, two first pixels 21 adjacent in the row direction X may form a repeating optical unit F, two first pixels 21 adjacent in the column direction Y may form a repeating optical unit F, or four first pixels 21 adjacent in the row direction X and the column direction Y may form a repeating optical unit F; at least four sub-pixels 211 are included in one repeating optical unit F (the case that eight sub-pixels 211 are included in one repeating optical unit F is illustrated in fig. 5, and the eight sub-pixels 211 are respectively indicated by numerals 1 to 8), at least four sub-pixels 211 are sequentially connected end to end in sequence, and may form a first polygonal structure, and at least four sub-pixels 211 are respectively located at vertices of the first polygonal structure. The electrode trace 31 extends along the direction of the side forming the first polygonal structure, that is, the extending direction of the electrode trace 31 is approximately the same as that of the side forming the first polygonal structure (note that, the expression of "approximately" herein refers to the position where the electrode trace 31 is disposed between two adjacent vertices in the first polygonal structure, the extending direction of the electrode trace 31 may be consistent with that of the side forming the first polygonal structure, or may have a certain offset angle, the shape of which may not be limited to a straight line, which will be described in detail in the following embodiment), the area where the electrode trace 31 is located and the area where the sub-pixel 211 is located are opaque areas, and the area surrounded by at least four sub-pixels 211 and the electrode trace 31 is transparent areas 111 (in fig. 5, the transparent areas 111 surrounded by eight sub-pixels 211 and the electrode trace 31 are indicated by a dot filling pattern with a first density), and the under-screen camera may realize optical imaging through the transparent areas 111.

For convenience of viewing, fig. 5 illustrates only four rows and four columns of first pixels 21, and it is noted that, in the present application, the row direction X also refers to the extending direction of one row of first pixels 21 in the array arrangement, the first pixels 21 adjacent to the row direction X may be regarded as the first pixels 21 adjacent to each other in the left-right direction, the column direction Y also refers to the extending direction of one column of first pixels 21 in the array arrangement, and the first pixels 21 adjacent to the column direction Y may be regarded as the first pixels 21 adjacent to each other in the up-down direction.

With continued reference to fig. 5, in this embodiment of the present application, in order to improve the display resolution, the first pixels 21 are designed as SPR pixels, each first pixel 21 may include two sub-pixels 211 with different display colors, one first pixel 21 of two first pixels 21 adjacent in the row direction X or the column direction Y includes a first display color sub-pixel a and a second display color sub-pixel b, and the other first pixel 21 includes a first display color sub-pixel a and a third display color sub-pixel c.

Specifically, since the human eye is insensitive to green, the proportion of green sub-pixels can be increased when the SPR pixel design is adopted, i.e., the first display color sub-pixel a may be a green sub-pixel, the second display color sub-pixel b may be a red sub-pixel, and the third display color sub-pixel c is a blue sub-pixel. In this way, in the row direction X and the column direction Y, the first pixels 21 having the blue sub-pixels and the green sub-pixels and the first pixels 21 having the red sub-pixels and the green sub-pixels are alternately arranged. Fig. 5 is merely an example of a specific arrangement of the sub-pixels 211 with different display colors, and is not limited to a real object.

With continued reference to fig. 5, in this embodiment of the present application, one repeating optical unit F may be formed by four first pixels 21 adjacent to each other in the row direction and the column direction, so that eight sub-pixels 211 are included in one repeating optical unit F, the eight sub-pixels 211 are sequentially connected end to end in sequence to form an octagonal structure, and the eight sub-pixels 211 are respectively located at the vertices of the octagonal structure.

It should be noted that fig. 5 only illustrates the number of sub-pixels 211 included in one first pixel 21 and the number of first pixels 21 included in one repeating optical unit F. In other embodiments of the present application, one first pixel 21 may also include three or more sub-pixels 211 with different display colors, and one repeating optical unit F may also include six or more first pixels 21, which will not be described in detail herein.

Alternatively, in this embodiment of the present application, each subpixel 211 generally includes a light emitting device and an electrode connected to the light emitting device, where the electrode is generally located below the light emitting device, and the shape of the electrode is generally substantially the same as that of the light emitting device, and the electrode may be slightly larger than or slightly smaller than the light emitting device, which is not limited herein. The sub-pixel 211 is used as a display pixel, the area where the sub-pixel 211 is located is an opaque area, the specific shape of the sub-pixel 211 is finally determined by the shapes of the light emitting device and the electrode, and the shape of the sub-pixel 211 can be, for example, square, rectangle, circle, etc., and in fig. 5 of the present application, only the shape of the sub-pixel 211 is taken as an example, and no practical limitation is made. The shape of the subpixels 211 displaying different colors may be different, and the light emitting area of the light emitting device may be different, which will not be described in detail herein.

Alternatively, in this embodiment of the present application, the light emitting device may specifically be an organic light-emitting diode (OLED) or a Micro light-emitting diode (Micro LED), which is not limited herein.

Alternatively, in this embodiment of the present application, the electrode trace 31 needs to be connected to an electrode to apply an external driving signal to the electrode-driven light emitting device to display a corresponding color. The sub-pixel 211 may be driven by Active (AM) or Passive (PM). In the AM driving mode, a driving circuit connected to the electrodes through the electrode trace 31 may be disposed under the first display area 11, for example, under the electrodes, under the electrode trace 31, or between two repeating optical units F adjacent in the row direction X and the column direction Y, and the driving circuit may be disposed in the second display area 12 to ensure that the first display area 11 has a sufficient light transmitting area 111. In addition, since the area where the driving circuit is located is an opaque area, when the driving circuit is disposed in the first display area 11, the driving circuit should be prevented from being disposed in the transparent area 111 as much as possible, so as to affect the optical imaging of the under-screen camera. When adopting the PM drive mode, the electrode is directly connected with an external screen drive chip (DDIC) through the electrode wire 31, and a drive circuit is not required to be arranged. Since the corresponding electrode trace 311 needs to be disposed for each sub-pixel 211, in order to save the area of the region where the electrode trace 311 is disposed, so as to increase the area of the light-transmitting region 111, the electrode trace 311 may be designed as a stacked multi-layer trace.

The working principle of the camera 02 below the first display area 11 provided in this embodiment of the present application is: in the imaging process of the under-screen camera, as light passes through the opaque region formed by the sub-pixels 211 and the electrode wires 31, an optical diffraction phenomenon is formed, and the generated multi-order diffraction light rays form virtual images such as ghosts, and the imaging effect is greatly affected. Such higher order diffraction is mainly related to the size and shape of the light-transmitting regions 111, the distance between the light-impermeable regions, the order of the light-impermeable regions, and the like. In the conventional pixel arrangement design, referring to the lower right corner plot in fig. 6, the areas of the light-transmitting regions are smaller and square or rectangular, the distance between the light-impermeable regions is shorter, and the light-impermeable regions are in a long-range order state, so that very strong multi-order diffraction light is generated in the row direction and the column direction. Such diffracted light has a very large influence on imaging by the camera, resulting in deterioration of imaging effect. There is thus a need to optimize the overall pixel design to mitigate this strong higher order optical diffraction phenomenon.

In this embodiment of the present application, the arrangement positions of the display pixels in the first display area 11 are optimized, at least two first pixels 21 that are adjacent to each other vertically and horizontally are used as a repeating optical unit F, and the positions of the single sub-pixels 211 are properly adjusted in the repeating optical unit F, so that the plurality of sub-pixels 211 are located at the vertices of the first polygon structure on the premise that the positions do not exceed the range of the original first pixels 21. With reference to fig. 5, in conjunction with the design of the electrode trace 31, the electrode trace 31 may be specifically configured as a straight line and parallel to the edge of the first polygonal structure, so that the first polygonal structure is formed by at least four sub-pixels 211 and the electrode trace 31, and the inside of the first polygonal structure is a light-transmitting area 111, that is, the light-transmitting area 111 does not include the sub-pixels 211 and the area where the electrode trace 31 is located, so that optical imaging of the under-screen camera can be achieved, and the positions where the at least four sub-pixels 211 and the electrode trace 31 are located are light-impermeable areas. In the pixel arrangement design, the light transmission area 111 with a larger area is formed in the first polygonal structure, and meanwhile, the distance between the light non-transmission areas is increased in the row direction X and the column direction Y, so that higher-order optical diffraction is effectively restrained. The optical diffraction simulation effect corresponding to the pixel arrangement design of fig. 5 is shown with reference to fig. 7, the lower-order diffraction is relatively enhanced, and the diffracted light energy is concentrated to a relatively central region, and the diffracted light is isotropic. In contrast to the optical diffraction effect shown in fig. 6, it is apparent that the multi-order diffraction in the row direction and the column direction is well suppressed. Therefore, the imaging effect of the under-screen camera is obviously improved.

With continued reference to fig. 5, in this embodiment of the present application, two repeating optical units F adjacent to each other in the row direction X or the column direction Y have a plurality of adjacent sub-pixels 211, for example, two repeating optical units F in the first row of fig. 5 have four sub-pixels 211 located in four first pixels 21 respectively, and as two repeating optical units F in the first column of fig. 5 have four sub-pixels 211 located in four first pixels 21 respectively, the sub-pixels 211 are sequentially connected end to end in sequence, so that a second polygonal structure may be formed, the second polygonal structure is for example, a quadrilateral in fig. 5, and the sub-pixels 211 are located at the vertices of the second polygonal structure, respectively, and the electrode traces 31 connected to the sub-pixels 211 extend along the direction of the edges constituting the second polygonal structure, that is, the extending direction of the electrode traces 31 connected to the sub-pixels 211 may be substantially the same as the edges of the second polygonal structure. In this way, an internal light-transmitting first polygonal structure, that is, an octagonal structure of eight sub-pixels 211 in the second and third first pixels 21 of the second and third rows in fig. 5, may be further formed between four repeating optical units adjacent in the row direction X and the column direction Y to increase the distribution density of the light-transmitting region.

In this embodiment of the present application, in the second polygonal structure, the area where the electrode trace 31 is located and the area where the sub-pixel 211 is located are opaque areas, and the area surrounded by the sub-pixel 211 and the electrode trace 31 may also be a transparent area 111 (in fig. 5, the transparent area 111 surrounded by the four sub-pixels 211 and the electrode trace 31 is indicated by a dot filling pattern with the second density), so as to increase the area ratio of the transparent area 111 of the first display area 11 and improve the optical imaging brightness of the under-screen camera. Alternatively, when the driving manner of the sub-pixels 211 is Active (AM) driving, and the driving circuit connected to the electrode trace 31 is disposed in the first display area 11, the driving circuit may be disposed in an area surrounded by the sub-pixels 211 and the electrode trace 31, and then an opaque area is disposed in the area surrounded by the sub-pixels 211 and the electrode trace 31.

With continued reference to fig. 5, in this embodiment of the present application, the position of the single sub-pixel 211 in the repeating optical unit F is appropriately adjusted, so that the first polygonal structure formed by the plurality of sub-pixels 211 located at the vertex has a plurality of pairs of sides parallel to each other, for example, the first polygonal structure in fig. 5 is an octagonal structure, and includes four pairs of sides parallel to each other, a column spacing B is provided between a pair of sides extending along the row direction, and a row spacing a is provided between a pair of sides extending along the column direction, and the row spacing a in one repeating optical unit F is equal to the column spacing B to balance the distance between the opaque regions in the row direction X and the column direction Y, so that the high-order optical diffraction in both the row direction X and the column direction Y can be effectively suppressed.

It should be noted that, in fig. 5, the electrode traces 31 are directly disposed at the sides of the octagonal structure, and the column pitch B may be considered as the pitch between the electrode traces 31 extending along the row direction X, and the row pitch a may be considered as the pitch between the electrode traces 31 extending along the column direction Y. In other embodiments described later herein, the electrode traces 31 may be routed in a manner that deviates from the sides of the octagonal structure, i.e., there may be no electrode traces 31 parallel to each other, and the column pitch B and the row pitch a refer to the pitches between the sides of the octagonal structure parallel to each other.

With continued reference to fig. 5, in this embodiment of the present application, the line spacing a between two repeating optical units F adjacent in the line direction X may be set to be the same; the column spacing B between two adjacent repeating optical units F in the column direction Y may also be set to be the same, so as to balance the optical diffraction effects of each repeating optical unit F in each direction, and ensure uniformity of the imaging effects of the under-screen camera in each region in the first display region 11.

Fig. 8 is a schematic partial view illustrating a pixel arrangement in a first display area in another display panel according to an embodiment of the present application. Referring to fig. 8, in another embodiment of the present application, two repetitive optical units F adjacent in the diagonal direction may share one first pixel 21 (two sub-pixels 211 in one first pixel 21 shared by virtual lines are employed in fig. 8). The arrangement design of the sub-pixels 211 in the first display area 11 can be further adjusted, and the positions of the sub-pixels 211 at the vertices are moved inwards or outwards relative to the central position of the octagonal structure, so that the row spacing a and the column spacing B of two adjacent repeating units F in the diagonal direction change, that is, the row spacing a and the column spacing a 'between two adjacent repeating optical units F in the diagonal direction are different, the column spacing B and the column spacing B' are also different, a 'is not equal to a', B 'is not equal to B', the size of the light-transmitting area 111 in the diagonal direction changes, and the arrangement balance of the sub-pixels 211 forming the octagonal structure in the diagonal direction is damaged, so that the non-long range order is realized in the diagonal direction, and the optimization effect on the optical diffraction of the under-screen camera is further realized.

Fig. 9a and fig. 9b are respectively optical diffraction simulation contrast data of two embodiments of the present application, where fig. 9a is an optical diffraction simulation graph formed by the sub-pixel arrangement corresponding to fig. 5, and fig. 9b is an optical diffraction simulation graph formed by the sub-pixel arrangement corresponding to fig. 5. It is obvious that by changing the relative arrangement positions of the sub-pixels 211 in the repeating optical unit F, the optical diffraction effect of the under-screen camera can be further reduced, the higher-order diffraction effect is further suppressed (the dotted line position in fig. 9a and 9 b), and the lower-order diffraction energy is more concentrated (the solid line position), so that the imaging effect of the under-screen camera is more effectively improved.

Alternatively, in the display panel provided in the present application, the layout of the electrode wirings 31 may be optimally designed in addition to the pixel arrangement in the repeating optical unit F.

Fig. 10 is a schematic partial view illustrating a pixel arrangement in a first display area in another display panel according to an embodiment of the present application. Referring to fig. 10, in another embodiment of the present application, in one repeating optical unit F, the electrode traces 31 respectively connected to at least four sub-pixels 211 may be straight lines, and have a set inclination angle with the sides of the first polygonal structure, that is, with respect to the wiring manner of the electrode traces 31 shown in fig. 5, the parallel straight lines at the opposite side positions of the electrode traces 31 may be changed into non-parallel straight lines, so as to reduce the strong diffraction phenomenon caused by the long-range ordered structure of the electrode traces 31 during parallel design.

Fig. 11 is a schematic partial view illustrating a pixel arrangement in a first display area in another display panel according to an embodiment of the present application. Referring to fig. 11, in another embodiment of the present application, in one repeating optical unit F, the electrode traces 31 respectively connected to at least four sub-pixels 211 are curved, that is, with respect to the wiring manner of the electrode traces 31 shown in fig. 5, the parallel straight lines of the electrode traces 31 at opposite side positions can be changed into non-parallel curves, so as to reduce the strong diffraction phenomenon caused by the long-range ordered structure of the electrode traces 31 during parallel design.

With continued reference to fig. 11, in this embodiment of the present application, the area surrounded by the curved electrode trace 31 and the at least four sub-pixels 211 in one repeating optical unit F may be substantially circular, and the shape of the area surrounded by the process limitation is similar to a circle (for example, an ellipse), which is within the scope of the embodiments of the present application. Furthermore, the curvature of the electrode trace 31 may be further adjusted so that the electrode trace 31 has different curvature designs with respect to at least the center symmetrical position of the octagonal structure, so that the diffraction effect may be further reduced.

It should be noted that, in the display panel provided in the embodiment of the present application, the wiring manners of the electrode traces 31 in the first display area 11 may be combined with each other, for example, the parallel-straight-line-wired electrode traces 31 may be disposed in a part of the repeating optical units F, the non-parallel-straight-line-wired electrode traces 31 may be disposed in another part of the repeating optical units F, and the non-parallel-curved-line-wired electrode traces 31 may be disposed in another part of the repeating optical units F. By combining the wiring modes of the electrode wirings 31 with each other, a strong diffraction phenomenon caused by the long-range order structure of the electrode wirings 31 can be reduced, and the diffraction effect can be further reduced.

Fig. 12 to 15 are schematic partial views illustrating pixel arrangements in a first display area in another display panel according to an embodiment of the present application (the electrode trace 31 is not shown in the drawings). Referring to fig. 12 to 15, in another embodiment of the present application, the first display area 11 of the display panel 01 may further include: the light shielding layer 112 covering each sub-pixel 211 and each electrode trace 31, wherein the light shielding layer 112 has a circular opening in the light transmitting region 111, and is similar to the circular opening (for example, an elliptical opening) due to process limitations. Specifically, before the electrode trace 31 is fabricated, a whole light shielding layer 112 is fabricated, and then the light shielding layer 112 of the light transmitting region 111 is etched by photolithography to obtain a circular light transmitting region 111. The shape of the light-transmitting region 111 can be modified by shielding with the light-shielding layer 112, for example, the light-transmitting region 111 is designed to be circular, and the diffraction effect can be further reduced. Fig. 12 and 14 show a case where the light transmitting region 111 includes only an area surrounded by eight sub-pixels 211 and electrode wirings 31, and fig. 13 and 15 show a case where the light transmitting region 111 further includes an area surrounded by four sub-pixels 211 and electrode wirings 31.

With continued reference to fig. 12 and 13, in this embodiment of the present application, the light shielding layer 112 may be made of a completely opaque material, so that the light transmittance of the manufactured light shielding layer 112 is 0 the same as that of the sub-pixel 211 and the electrode trace 31, and at this time, the area covered by the pattern of the light shielding layer 112 is an opaque area.

Alternatively, with continued reference to fig. 14 and 15, in this embodiment of the present application, the light shielding layer 112 may be made of a material having a certain light transmittance, and thus the light shielding layer 112 may be made of a material having a certain light transmittance, for example, the light transmittance of the light shielding layer 112 may take a value in a range of 1% to 99%. At this time, the sub-pixel 211 covered by the light shielding layer 112 and the region where the electrode trace 31 is located are opaque regions, and the other light shielding layer 112 may be regarded as a semi-opaque region, and may also function to reduce diffraction effects.

Fig. 16 is a schematic partial view illustrating a pixel arrangement in a second display area in a display panel according to an embodiment of the present application. Referring to fig. 16, in one embodiment of the present application, the second display area 12 of the display panel 01 includes: a plurality of second pixels 22 arranged in an array; to accommodate the SPR pixel design employed in the first display area 11, two sub-pixels 211 of different display colors are also included within each second pixel 22. In order to realize high resolution display, the pixel arrangement of the second display area 12 is generally different from that of the first display area 11, for example, two sub-pixels 211 in one second pixel 22 may be arranged along a row direction X (as shown in fig. 16) or a column direction Y, and the electrode trace 31 may be directly arranged as a straight line along the row direction X and the column direction Y to reduce the difficulty of wiring design. Fig. 16 illustrates only the pixel arrangement in the second display area 12, and other pixel arrangements in the second display area 12 may be used, which will not be described in detail herein.

According to the display panel and the display device provided by the embodiment of the application, the arrangement positions of the display pixels of the first display area of the corresponding under-screen camera in the display panel are optimized, at least two first pixels which are adjacent to each other in the upper, lower, left and right directions are used as a repeated optical unit, the positions of the single sub-pixels are properly adjusted in the repeated optical unit, the plurality of sub-pixels are located at the top of the first polygonal structure on the premise that the positions do not exceed the range of the original first pixels, the electrode wiring is matched with the design of the electrode wiring, the electrode wiring is approximately identical to the extending direction of the edge of the first polygonal structure, the inside of the area surrounded by the at least four sub-pixels and the electrode wiring is a light transmission area, the optical imaging of the under-screen camera can be realized, and the positions of the at least four sub-pixels and the electrode wiring are light-proof areas. The pixel arrangement design forms a light transmission area with larger area, and meanwhile, the distance between the light-tight areas is increased in the row direction and the column direction, so that the high-order optical diffraction is effectively inhibited, the low-order diffraction is relatively enhanced, the diffracted light energy is concentrated to the area in the relative center, and the diffracted light is isotropic, so that the imaging effect of the under-screen camera is obviously improved.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

A display panel, characterized in that a display area of the display panel is divided into a first display area and a second display area surrounding the first display area, and the first display area is internally provided with a light transmission area; the first display area of the display panel comprises:

the display device comprises a plurality of first pixels arranged in an array, wherein each first pixel comprises at least two sub-pixels with different display colors; wherein, in the plurality of first pixels arranged in an array, at least two first pixels adjacent in a row direction and/or a column direction form a repeating optical unit; the repeated optical unit comprises at least four sub-pixels, the at least four sub-pixels are sequentially connected end to end in sequence to form a first polygonal structure, and the at least four sub-pixels are respectively positioned at the vertexes of the first polygonal structure;

and the electrode wires are respectively connected with the sub-pixels, extend along the direction of the edges forming the first polygonal structure, the opaque region in the first display region comprises the region where the electrode wires are positioned and the region where the sub-pixels are positioned, and the transparent region comprises an inner region surrounded by the at least four sub-pixels and the electrode wires.
The display panel according to claim 1, wherein two of the repeating optical units adjacent in the row direction or the column direction have a plurality of adjacent sub-pixels, the plurality of sub-pixels are sequentially connected end to form a second polygonal structure, and the plurality of sub-pixels are respectively located at the vertices of the second polygonal structure;

electrode traces connected to the plurality of sub-pixels extend along directions of sides constituting the second polygonal structure.
The display panel of claim 2, wherein the light transmissive region further comprises an interior region bounded by the plurality of subpixels and the electrode trace.
A display panel as claimed in any one of claims 1-3, characterized in that the first polygonal structure has a plurality of pairs of mutually parallel sides with a column spacing between a pair of sides extending in the row direction and a row spacing between a pair of sides extending in the column direction, the row spacing in one of the repeating optical units being equal to the column spacing.
The display panel of claim 4, wherein the line spacing between two of the repeating optical units that are adjacent in the line direction is the same; the column pitch between two of the repeating optical units adjacent in the column direction is the same.
The display panel according to claim 5, wherein two of the repeating optical units adjacent in a diagonal direction share one of the first pixels; the row pitch and the column pitch between two of the repeating optical units adjacent in the diagonal direction are each different from each other.
The display panel of any one of claims 1-6, wherein in one of the repeating optical units, the electrode tracks respectively connected to the at least four sub-pixels are straight lines and parallel to the sides of the first polygonal structure; or alternatively, the first and second heat exchangers may be,

in one of the repeating optical units, electrode wirings respectively connected with the at least four sub-pixels are straight lines and have a set inclination angle with the side of the first polygonal structure; or alternatively, the first and second heat exchangers may be,

in one of the repeating optical units, electrode traces respectively connected to the at least four sub-pixels are curved.
The display panel of claim 7, wherein in one of the repeating optical units, the area enclosed by the curved electrode trace and the at least four sub-pixels is substantially circular.
The display panel of any one of claims 1-8, wherein within the first display area of the display panel further comprises: the shading layer covers each sub-pixel and each electrode wire, and the shading layer is provided with a circular opening in the light transmission area.
The display panel of claim 9, wherein the light-shielding layer has a light transmittance of between 1% and 99%.
The display panel of any one of claims 1-10, wherein the second display area of the display panel comprises: and the second pixels are arranged in an array, and each second pixel comprises at least two sub-pixels which are different in display color and are arranged along the row direction or the column direction.
A display panel as claimed in any one of claims 1 to 11, characterized in that the sub-pixels comprise light emitting devices and electrodes connected to the light emitting devices, the electrode tracks being connected to the electrodes.
The display panel of claim 12, wherein the light emitting device is an organic light emitting diode or a micro light emitting diode.
The display panel according to any one of claims 1 to 13, wherein each of the first pixels includes two sub-pixels having different display colors, four of the first pixels adjacent in a row direction and a column direction form a repeating optical unit, and eight sub-pixels are included in one of the repeating optical units, the eight sub-pixels being sequentially connected end to end in sequence to form an octagonal structure, and the eight sub-pixels being respectively located at vertices of the octagonal structure.
The display panel of claim 14, wherein one of the two first pixels adjacent in a row direction or a column direction includes a first display color sub-pixel and a second display color sub-pixel, and the other first pixel includes the first display color sub-pixel and a third display color sub-pixel.
The display panel of claim 15, wherein the first display color sub-pixel is a green sub-pixel, the second display color sub-pixel is a red sub-pixel, and the third display color sub-pixel is a blue sub-pixel.
A display device, comprising: the display panel of any one of claims 1-16, and a camera disposed below a first display area of the display panel.