WO2024087084A1 - 显示面板及其制作方法、显示装置 - Google Patents

显示面板及其制作方法、显示装置 Download PDF

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Publication number
WO2024087084A1
WO2024087084A1 PCT/CN2022/127880 CN2022127880W WO2024087084A1 WO 2024087084 A1 WO2024087084 A1 WO 2024087084A1 CN 2022127880 W CN2022127880 W CN 2022127880W WO 2024087084 A1 WO2024087084 A1 WO 2024087084A1
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WIPO (PCT)
Prior art keywords
edge
display area
sub
area
pixels
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PCT/CN2022/127880
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English (en)
French (fr)
Inventor
翟学勇
毕谣
周康迪
张冬华
高锦
王策
王晓东
王建
关星星
毕洪生
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Priority to PCT/CN2022/127880 priority Critical patent/WO2024087084A1/zh
Publication of WO2024087084A1 publication Critical patent/WO2024087084A1/zh

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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

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a display panel and a manufacturing method thereof, and a display device.
  • Special-shaped display screens are becoming more and more popular among consumers.
  • Special-shaped display screens have made the application fields of display screens broader and can further meet people's requirements for display, such as watches, wearable mobile phones, etc. Therefore, special-shaped display screens have become one of the hot spots in the current display field research.
  • the main difference of special-shaped display screens is that their display area presents a special non-rectangular shape.
  • the pixels in display screens are mostly rectangular structures or other relatively regular structures. Therefore, when it is applied to special-shaped display screens, in the edge area of the display screen, the pixels and the boundary line of the display screen cannot be completely matched, thus causing the edge area of the display screen to present jagged textures when displayed.
  • the purpose of the present disclosure is to provide a display panel and a manufacturing method thereof, and a display device, so as to reduce the problem of jagged edges of a special-shaped display area when being displayed, and improve the display quality of the display panel.
  • a display panel comprising: a display area and a non-display area located outside the display area, wherein the display area comprises a main display area and a special-shaped display area located outside the main display area;
  • the display panel further comprises a base substrate and a plurality of pixels arranged on one side of the base substrate, wherein the pixels are located in the display area, and pixels whose orthographic projections of the plurality of pixels on the base substrate overlap with the orthographic projections of the edges of the special-shaped display area on the base substrate are edge pixels;
  • the edge pixel is provided with a light-shielding pattern, and the light-shielding pattern divides the edge pixel into a light-shielding area and a light-transmitting area;
  • the edge pixel has a preset grayscale value and a brightness ratio
  • the brightness ratio is the ratio of the brightness of the light-transmitting area of the edge pixel to the brightness when the entire area of the edge pixel is light-transmitting
  • the preset grayscale value of the edge pixel and the brightness ratio of the edge pixel satisfy an exponential function relationship
  • the pixel includes a plurality of sub-pixels arranged at intervals along a first direction
  • the light shielding pattern includes a plurality of sub-light shielding patterns arranged along the first direction
  • the sub-light shielding patterns correspond one-to-one to the sub-pixels of the edge pixel
  • the sub-light-shielding pattern has a first boundary edge, the first boundary edge divides the sub-pixel into a sub-light-shielding area and a sub-light-transmitting area, and the first boundary edge and the first direction have a first angle ⁇ 1, 0 ⁇ 1 ⁇ 90°;
  • the edge of the special-shaped display area intersects with the edge pixel at a first intersection and a second intersection, and a line connecting the first intersection and the second intersection is a first connecting line;
  • the first boundary edge and the first connecting line have the same inclination direction.
  • the first connecting line has a second angle with the first direction, and the difference between the first angle and the second angle is no more than 2°.
  • the first angle and the second angle are equal.
  • the edge of the special-shaped display area has a starting point and an end point, and moving from the starting point to the end point of the edge of the special-shaped display area, the difference between the first angles of the sub-light-shielding patterns of two adjacent edge pixels is b;
  • the number of edge pixels corresponding to the edge of the special-shaped display area is n;
  • the edge of the special-shaped display area has an approximate angle ⁇ , and the approximate angle is the corresponding central angle when the edge of the special-shaped display area is fitted into an arc; then,
  • the edge of the special-shaped display area has a starting point and an end point, and moving from the starting point to the end point of the edge of the special-shaped display area, the difference between the first angles of the sub-light-shielding patterns of two adjacent edge pixels is b; then,
  • m is the number of edge pixels corresponding to when the edge fitting of the special-shaped display area is expanded to 1/4 arc.
  • the first angles of the sub-light-shielding patterns corresponding to the sub-pixels in the same pixel are equal.
  • the preset grayscale value of the edge pixel and the brightness ratio of the edge pixel satisfy the following relationship:
  • Gy is the preset grayscale value of the edge pixel
  • M is the brightness of the light-transmitting area of the edge pixel
  • N is the brightness when the entire area of the edge pixel is light-transmitting
  • k is a first constant
  • h is a gamma value.
  • the value of k is 255, and the value of h is 2.2.
  • Gy is the preset grayscale value of the edge pixel
  • h is the gamma value
  • a method for manufacturing a display panel comprising:
  • a plurality of pixels are formed on one side of the base substrate, the pixels are located in the display area, and pixels whose orthographic projections of the plurality of pixels on the base substrate overlap with the orthographic projections of the edges of the special-shaped display area on the base substrate are edge pixels, the edge pixels are provided with a shading pattern, the shading pattern divides the edge pixels into a shading area and a light-transmitting area, and the edge pixels have a test grayscale value;
  • the brightness ratio is the ratio of the brightness of the light-transmitting area of the edge pixel to the brightness of the entire area of the edge pixel when light is transmitted, and the test grayscale value of the edge pixel and the brightness ratio of the edge pixel satisfy an exponential function relationship.
  • the pixel includes a plurality of sub-pixels arranged at intervals along a first direction
  • the light shielding pattern includes a plurality of sub-light shielding patterns arranged along the first direction
  • the sub-light shielding patterns correspond one-to-one to the sub-pixels of the edge pixel
  • the sub-light-shielding pattern has a first boundary edge, the first boundary edge divides the sub-pixel into a sub-light-shielding area and a sub-light-transmitting area, and the first boundary edge and the first direction have a first angle ⁇ 1, 0 ⁇ 1 ⁇ 90°;
  • the edge of the special-shaped display area intersects with the edge pixel at a first intersection and a second intersection, and a line connecting the first intersection and the second intersection is a first connecting line;
  • the first boundary edge and the first connecting line have the same inclination direction.
  • the first connecting line has a second angle with the first direction, and the difference between the first angle and the second angle is no more than 2°.
  • the first angle and the second angle are equal.
  • the edge of the special-shaped display area has a starting point and an end point, and moving from the starting point to the end point of the edge of the special-shaped display area, the difference between the first angles of the sub-light-shielding patterns of two adjacent edge pixels is b;
  • the number of edge pixels corresponding to the edge of the special-shaped display area is n;
  • the edge of the special-shaped display area has an approximate angle ⁇ , and the approximate angle is the corresponding central angle when the edge of the special-shaped display area is fitted into an arc; then,
  • the edge of the special-shaped display area has a starting point and an end point, and moving from the starting point to the end point of the edge of the special-shaped display area, the difference between the first angles of the sub-light-shielding patterns of two adjacent edge pixels is b; then,
  • m is the number of edge pixels corresponding to when the edge fitting of the special-shaped display area is expanded to 1/4 arc.
  • the first angles of the sub-light-shielding patterns corresponding to the sub-pixels in the same pixel are equal.
  • the sub-light shielding pattern has a designed length in a third direction, the third direction has a third angle with the first direction, and the third angle is greater than the first angle;
  • the size of the sub-light-shielding pattern is adjusted by adjusting the design length of the sub-light-shielding pattern, thereby changing the size of the corresponding light-shielding pattern.
  • test grayscale value of the edge pixel and the brightness ratio of the edge pixel satisfy the following relationship:
  • Gy′ is the test grayscale value of the edge pixel
  • M is the brightness of the light-transmitting area of the edge pixel
  • N is the brightness when the entire area of the edge pixel is light-transmitting
  • k is the first constant
  • h is the gamma value.
  • Gy is the preset grayscale value of the edge pixel
  • h is the gamma value
  • a display device comprising the display panel as described in the first aspect.
  • the display panel provided by the present disclosure has a shading pattern on the edge pixels, and the shading pattern divides the edge pixels into a shading area and a light-transmitting area.
  • the edge pixels have a preset grayscale value and a brightness ratio, and the brightness ratio is the ratio of the brightness of the light-transmitting area of the edge pixel to the brightness of the entire area of the edge pixel when light is transmitted, and the preset grayscale value of the edge pixel and the brightness ratio of the edge pixel satisfy an exponential function relationship.
  • this method comprehensively considers the problem of different brightness of pixels in different areas, helps to improve the uniformity of grayscale transition of areas on both sides of the edge pixel, thereby weakening the problem of jagged edges in the display of the irregular display area, and improving the display quality of the display panel.
  • FIG1 is a schematic diagram of a planar structure of a display panel in an exemplary embodiment of the present disclosure
  • FIG2 is a schematic diagram of a partial structure of a special-shaped display area in an exemplary embodiment of the present disclosure
  • FIG3 is a schematic diagram of a pixel structure of an edge of a special-shaped display area in an exemplary embodiment of the present disclosure
  • FIG4 is a schematic diagram of a light shielding pattern structure in an exemplary embodiment of the present disclosure.
  • FIG5 is a schematic diagram of the approximate angle structure of the edge of the special-shaped display area in an exemplary embodiment of the present disclosure
  • FIG6 is a schematic diagram of the brightness distribution of a pixel L255 in an exemplary embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of a length structure of a light-shielding pattern design in an exemplary embodiment of the present disclosure.
  • 10-display panel 11-display area; 11a-main display area; 11b-special-shaped display area; 12-non-display area; 20-pixel; 201-sub-pixel; 21-edge pixel; 211-shading area; 212-transmitting area; 213-sub-display area; 214-sub-non-display area; L1-edge of the special-shaped display area; L2-first connecting line; ⁇ 2-second angle; 30-shading pattern; 301-sub-shading pattern; ⁇ 1-first angle; L3-first dividing edge; 31-black matrix; ⁇ 3-third angle.
  • a structure When a structure is “on” another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is “directly” disposed on the other structure, or that the structure is “indirectly” disposed on the other structure via another structure.
  • a special-shaped display screen generally includes a main display area located in the center, i.e., a normal display area, and a special-shaped display area located outside the main display area.
  • the pixels in the special-shaped display area are partially shielded to improve the jagged edge phenomenon of the special-shaped display area during display.
  • the shielding design method is not accurate enough to meet the requirements of high PPI (Pixels Per Inch, pixel density unit) display products.
  • a display panel 10 is provided in an embodiment of the present disclosure, comprising a display area 11 and a non-display area 12 located outside the display area 11 , wherein the display area 11 comprises a main display area 11 a and a special-shaped display area 11 b located outside the main display area 11 a;
  • the display panel 10 also includes a base substrate and a plurality of pixels 20 arranged on one side of the base substrate, the pixels 20 are located in the display area 11, and the pixels 20 whose orthographic projections of the plurality of pixels 20 on the base substrate overlap with the orthographic projections of the edge L1 of the special-shaped display area 11b on the base substrate are edge pixels 21; the edge pixels 21 are provided with a shading pattern 30, and the shading pattern 30 divides the edge pixels 21 into a shading area 211 and a light-transmitting area 212; the edge pixels 21 have a preset grayscale value and a brightness ratio, and the brightness ratio is the ratio of the brightness of the light-transmitting area 212 of the edge pixel 21 to the brightness when the entire area of the edge pixel 21 is light-transmitting, and the preset grayscale value of the edge pixel 21 and the brightness ratio of the edge pixel 21 satisfy an exponential function relationship.
  • the edge pixel 21 is provided with a shading pattern 30, and the shading pattern 30 divides the edge pixel 21 into a shading area 211 and a light-transmitting area 212.
  • the edge pixel 21 has a preset grayscale value and a brightness ratio, and the brightness ratio is the ratio of the brightness of the light-transmitting area 212 of the edge pixel 21 to the brightness of the entire area of the edge pixel 21 when light is transmitted, and the preset grayscale value of the edge pixel 21 and the brightness ratio of the edge pixel 21 satisfy an exponential function relationship.
  • this method comprehensively considers the problem that the pixel 20 displays different brightness in different areas, which helps to improve the uniformity of the grayscale transition of the areas on both sides of the edge pixel 21, thereby weakening the problem of the jagged shape when the edge of the special-shaped display area 11b is displayed, and improving the display quality of the display panel 10.
  • the present disclosure provides a display panel 10, which may be a liquid crystal display panel 10 (LCD).
  • the display panel 10 includes a display area 11 and a non-display area 12 located outside the display area 11, and the display area 11 includes a main display area 11a and a special-shaped display area 11b located outside the main display area 11a.
  • the display area 11 is used to display images, and the main display area 11a is located in the middle of the display area 11.
  • the special-shaped display area 11b is located outside the main display area 11a, and the edge L1 of the special-shaped display area 11b can be circular, arc-shaped or curved, etc., which is specifically set according to the actual application requirements of the display panel 10.
  • the display panel 10 includes a substrate and a plurality of pixels 20 disposed on one side of the substrate, and the pixels 20 are located in the display area 11.
  • the substrate may be a glass substrate or a flexible substrate, such as a polyimide flexible substrate.
  • the plurality of pixels 20 are arranged at intervals, and specifically, the plurality of pixels 20 may be arranged in an array along a first direction X and a second direction Y, and the first direction X and the second direction Y have a certain angle, which may be any angle from 0° to 90°.
  • the angle between the first direction X and the second direction Y is approximately 90°.
  • a plurality of pixels 20 may be divided by a black matrix 31, and the black matrix 31 is formed by a light-shielding material, such as a black resin material.
  • Each pixel 20 includes a plurality of sub-pixels 201 arranged at intervals along a first direction X, and each sub-pixel 201 may emit light of a different color.
  • each pixel 20 includes three sub-pixels 201, namely a red sub-pixel 201, a green sub-pixel 201, and a blue sub-pixel 201, and the three sub-pixels 201 are arranged in sequence along the first direction X.
  • Each sub-pixel 201 in the pixel 20 is divided by a black matrix 31.
  • the pixels 20 whose orthographic projections on the base substrate overlap with the orthographic projections on the edge L1 of the irregular display area 11b on the base substrate are edge pixels 21. That is, the pixels 20 corresponding to the edge L1 of the irregular display area 11b in the direction perpendicular to the base substrate are edge pixels 21.
  • the number of edge pixels 21 may be determined by the shape or length of the edge L1 of the irregular display area 11b.
  • the edge pixel 21 is provided with a shading pattern 30, and the shading pattern 30 divides the edge pixel 21 into a shading area 211 and a light-transmitting area 212.
  • the shading pattern 30 can be arranged in the same layer as the black matrix 31, that is, it is made of the same material and the same process. In FIG4, in order to clearly show the shape of the shading pattern 30, the filling pattern of the shading pattern 30 and the black matrix 31 is transparent.
  • the light-transmitting area 212 of the edge pixel 21 can be used for display, and the shading area 211 cannot be used for display. It should be noted that in the present disclosure, except for the edge pixel 21, all areas of other pixels 20 can be light-transmitting areas.
  • each sub-pixel 201 of each pixel 20 are all light-transmitting areas, which can be used for display.
  • the areas of each sub-pixel 201 of each pixel 20 are also all light-transmitting areas 212, which can be used for display.
  • the edge pixel 21 has a preset grayscale value.
  • the preset grayscale value of the edge pixel 21 is set according to the area of the two sides of the edge pixel 21 divided by the edge L1 of the special-shaped display area 11b, so that the preset grayscale value of the edge pixel 21 can evenly transition the grayscale values of the two sides of the edge L1 of the special-shaped display area 11b.
  • the edge L1 of the irregular display area 11b divides the corresponding edge pixel 21 into a sub-display area 213 and a sub-non-display area 214.
  • the area of the entire area of the edge pixel 21 is A0
  • the area of the sub-display area 213 of the edge pixel 21 is A1
  • the preset grayscale value of the edge pixel 21 is set according to the ratio of the area A1 of the sub-display area 213 to the area A0 of the entire area of the edge pixel 21.
  • Grayscale represents the brightness level of the pixel 20.
  • the preset grayscale value of the edge pixel 21 satisfies the following relationship:
  • Gy is a preset grayscale value of the edge pixel 21
  • h is a gamma value, which is generally 2.2.
  • the edge pixel 21 also has a brightness ratio, which is the ratio of the brightness of the light-transmitting area 212 of the edge pixel 21 to the brightness of the entire area of the edge pixel 21 when light is transmitted, and the preset grayscale value of the edge pixel 21 and the brightness ratio of the edge pixel 21 satisfy an exponential function relationship.
  • the brightness ratio of the edge pixel 21 is the base of the exponential function
  • the preset grayscale value of the edge pixel 21 is the function value.
  • the brightness when the entire area of the edge pixel 21 is transparent is defined as the L255 screen brightness.
  • the L255 screen is a full white screen.
  • the display brightness at different positions of the light-transmitting area of the pixel 20 is different.
  • the middle area 01 and the area 02 close to the black matrix 31 are darker and the brightness is uneven.
  • the present disclosure takes this situation into consideration, and establishes a corresponding relationship with the preset grayscale value of the edge pixel 21 based on the ratio between the brightness of the light-transmitting area 212 of the edge pixel 21 and the brightness when the entire area of the edge pixel 21 is transparent. In this way, it helps to make the actual grayscale value of the edge pixel 21 more accurately close to the preset grayscale value, and improve the uniformity of the grayscale transition of the areas on both sides of the edge pixel 21.
  • the ratio of the preset grayscale value of the edge pixel 21 to the brightness of the edge pixel 21 satisfies the following relationship:
  • Gy is the preset grayscale value of the edge pixel
  • M is the brightness of the light-transmitting area of the edge pixel
  • N is the brightness when the entire area of the edge pixel 21 is light-transmitting
  • k is the first constant, which can be 255
  • h is the gamma value, which can be 2.2.
  • the shading pattern 30 includes a plurality of sub-shading patterns 301 arranged along the first direction X, and the sub-shading patterns 301 correspond one-to-one to the sub-pixels 201 of the edge pixels 21;
  • the sub-shading pattern 301 has a first dividing edge L3, and the first dividing edge L3 divides the sub-pixel 201 into a sub-shading area 211 and a sub-light-transmitting area 212, and the first dividing edge L3 has a first angle ⁇ 1 with the first direction X, 0 ⁇ 1 ⁇ 90°;
  • the edge L1 of the special-shaped display area 11b intersects with the edge pixel 21 at a first intersection and a second intersection, and the line connecting the first intersection and the second intersection is the first line L2;
  • the first dividing edge L3 has the same inclination direction as the first line L2.
  • the first dividing edge L3 of the sub-shading pattern 301 has the same inclination direction as the first connecting line L2, so that the edge of the light-transmitting area 212 of the edge pixel 21 is similar in shape to the edge L1 of the special-shaped display area 11b, thereby further reducing the probability of a jagged edge of the special-shaped display area.
  • the shape and size of the sub-shading pattern 301 corresponding to the sub-pixel 201 area in the edge pixel 21 is also set according to the shape of the shading pattern 30 corresponding to the edge pixel 21 recorded above, and will not be repeated in detail in this disclosure.
  • the first connecting line L2 has a second angle ⁇ 2 with the first direction X, and the difference between the first angle ⁇ 1 and the second angle ⁇ 2 is not greater than 2°, preferably, not greater than 1°, so that the edge of the light-transmitting area 212 of the edge pixel 21 is closer in shape to the edge L1 of the special-shaped display area 11b.
  • the first angle ⁇ 1 and the second angle ⁇ 2 are equal.
  • the edge L1 of the special-shaped display area 11b is a curve with a certain curvature.
  • the edge L1 of the special-shaped display area 11b has a starting point and an end point.
  • m is the number of edge pixels 21 corresponding to the edge L1 of the special-shaped display area 11b when the edge L1 is extended to a quarter arc.
  • the number of edge pixels 21 corresponding to the edge L1 of the special-shaped display area 11b when the edge L1 is extended to a quarter arc includes the number of edge pixels 21 originally corresponding to the edge L1 of the special-shaped display area 11b and the number of extended edge pixels 21 corresponding to the extended segment when the edge L1 is extended to a quarter arc.
  • the arrangement mode, shape and size of the extended edge pixels 21 are the same as the arrangement mode and shape and size of other pixels 20.
  • the first angle ⁇ 1 of the sub-shading pattern 301 of the edge pixel 21 corresponding to one endpoint can be defined as 90°, and the first angle ⁇ 1 of the sub-shading pattern 301 of the edge pixel 21 corresponding to the other endpoint is 0°.
  • the first angles ⁇ 1 of the sub-light shielding patterns 301 corresponding to the sub-pixels 201 in the same edge pixel 21 are equal. Furthermore, the sub-light shielding patterns 301 corresponding to the sub-pixels 201 in the same edge pixel 21 are the same in shape and size, so as to improve the uniformity of the display of each sub-pixel 201.
  • the present disclosure further provides a method for manufacturing a display panel 10.
  • the display panel 10 includes a display area 11 and a non-display area 12 located outside the display area 11.
  • the display area 11 includes a main display area 11a and a special-shaped display area 11b located outside the main display area 11a.
  • the method for manufacturing the display panel 10 includes the following steps:
  • Step S100 providing a substrate
  • Step S200 forming a plurality of pixels 20 on one side of the base substrate, the pixels 20 being located in the display area 11, the pixels 20 whose orthographic projections of the plurality of pixels 20 on the base substrate overlap with the orthographic projections of the edge L1 of the special-shaped display area 11b on the base substrate are edge pixels 21, the edge pixels 21 are provided with a shading pattern 30, the shading pattern 30 divides the edge pixels 21 into a shading area 211 and a light-transmitting area 212, and the edge pixels 21 have a test grayscale value;
  • Step S300 setting a preset grayscale value of the edge pixel 21;
  • Step S400 adjusting the size of the light shielding pattern 30, changing the brightness ratio and the test grayscale value of the edge pixel 21, so that the test grayscale value of the edge pixel 21 is equal to the preset grayscale value of the edge pixel 21;
  • the brightness ratio is the ratio of the brightness of the light-transmitting area 212 of the edge pixel 21 to the brightness of the entire area of the edge pixel 21 when light is transmitted, and the test grayscale value of the edge pixel 21 and the brightness ratio of the edge pixel 21 satisfy an exponential function relationship.
  • the test grayscale value of the edge pixel 21 is the function value of the exponential function, and the brightness ratio of the edge pixel 21 is the base of the exponential function.
  • the test grayscale value of the edge pixel 21 changes with the brightness ratio of the edge pixel 21, and the brightness ratio of the edge pixel 21 changes with the size of the shading pattern 30.
  • the ratio of the test grayscale value of the edge pixel 21 to the brightness of the edge pixel 21 satisfies the following relationship:
  • Gy′ is the test grayscale value of the edge pixel
  • M is the brightness of the light-transmitting area of the edge pixel
  • N is the brightness when the entire area of the edge pixel 21 is light-transmitting
  • k is the first constant, which can be 255
  • h is the gamma value, which can be 2.2.
  • the display panel 10 generally includes an array substrate and a color filter substrate arranged opposite to each other, and a liquid crystal layer sealed between the array substrate and the color filter substrate.
  • the array substrate includes the above-mentioned base substrate and a driving circuit arranged on one side of the base substrate, and the driving circuit is used to drive the liquid crystal layer to deflect.
  • the color filter substrate includes a substrate and a color filter layer arranged on one side of the substrate.
  • the color filter layer may include a black matrix 31 and a filter film divided by the black matrix 31.
  • the filter films in different regions can transmit light of different colors, such as red light, green light and blue light.
  • the multiple pixels 20 of the display panel 10 are also divided by the black matrix 31.
  • the shading pattern 30 can be arranged in the same layer as the black matrix 31.
  • the black matrix 31 and the light shielding pattern 30 are both formed of a light shielding material.
  • a light shielding material layer can be deposited on one side of the substrate, and then the light shielding material layer is patterned to form the light shielding pattern 30 and the black matrix 31.
  • the design of the light shielding pattern 30 must meet the setting conditions of the light shielding pattern 30 of the present disclosure, such as making the test grayscale value of the edge pixel 21 equal to the preset grayscale value of the edge pixel 21.
  • step S300 the preset grayscale value of the edge pixel 21 is set.
  • the preset grayscale value of the edge pixel 21 is set according to the area of the two sides of the edge pixel 21 divided by the edge of the special-shaped display area, so that the preset grayscale value of the edge pixel 21 can evenly transition the grayscale values of the two sides of the edge of the special-shaped display area.
  • the preset grayscale value of the edge pixel 21 is set according to the ratio of the area A1 of the sub-display area 213 to the area A0 of the entire area of the edge pixel 21. Grayscale represents the brightness level of the pixel 20.
  • the preset grayscale value of the edge pixel 21 satisfies the following relationship:
  • Gy is a preset grayscale value of the edge pixel 21
  • h is a gamma value, which is generally 2.2.
  • step S400 the size of the shading pattern is adjusted, and the brightness ratio and the test grayscale value of the edge pixel are changed, so that the test grayscale value of the edge pixel is equal to the preset grayscale value of the edge pixel.
  • the size of the light shielding pattern 30 can be achieved by adjusting the size in a certain direction of the light shielding pattern 30. In some embodiments of the present disclosure, some parameters on the shape of the light shielding pattern 30 need to be set first.
  • the light shielding pattern 30 includes a plurality of sub-light shielding patterns 301 arranged along the first direction X, and the sub-light shielding patterns 301 correspond to the sub-pixels 201 of the edge pixels 21 one by one;
  • the sub-light shielding pattern 301 has a first boundary edge L3, and the first boundary edge L3 divides the sub-pixel 201 into a sub-light shielding area 211 and a sub-light-transmitting area 212, and the first boundary edge L3 has a first angle ⁇ 1 with the first direction X, 0 ⁇ 1 ⁇ 90°;
  • the edge L1 of the special-shaped display area 11b intersects with the edge pixel 21 at a first intersection and a second intersection, and the line connecting the first intersection and the second intersection is a first line L2;
  • the first boundary edge L3 has the same inclination direction as the first line L2.
  • the first line L2 has a second angle ⁇ 2 with the first direction X, and the difference between the first angle
  • the first angle ⁇ 1 and the second angle ⁇ 2 are equal.
  • the edge L1 of the special-shaped display area 11b is a curve with a certain curvature.
  • the edge L1 of the special-shaped display area 11b has a starting point and an end point.
  • m is the number of edge pixels 21 corresponding to the edge L1 of the special-shaped display area 11b when the edge L1 of the special-shaped display area 11b is extended to a quarter arc.
  • the number of edge pixels 21 corresponding to the edge L1 of the special-shaped display area 11b when the edge L1 of the special-shaped display area 11b is extended to a quarter arc includes the number of edge pixels 21 originally corresponding to the edge L1 of the special-shaped display area 11b and the number of extended edge pixels 21 corresponding to the extended segment when the edge L1 of the special-shaped display area 11b is extended to a quarter arc.
  • the arrangement mode, shape and size of the extended edge pixels 21 are the same as the arrangement mode and shape and size of other pixels 20.
  • the first angles ⁇ 1 of the sub-light shielding patterns 301 corresponding to the sub-pixels 201 in the same edge pixel 21 are equal. Furthermore, the sub-light shielding patterns 301 corresponding to the sub-pixels 201 in the same edge pixel 21 are of the same shape and size to improve the display uniformity of each sub-pixel 201.
  • the size of the shading pattern 30 is determined by adjusting the length of the shading pattern 30 in a certain direction.
  • the sub-light-shielding pattern 301 has a design length h in the third direction Z
  • the third direction Z has a third angle ⁇ 3 with the first direction X
  • the third angle ⁇ 3 is greater than the first angle ⁇ 1.
  • the third direction Z can be parallel to the edge of the pixel 20.
  • the present disclosure also provides a display device, including a display panel 10, which can be the display panel 10 in any of the above embodiments. Its specific structure and beneficial effects can be referred to the above embodiments of the display panel 10, which will not be repeated here.
  • the display device of the present disclosure can be an electronic device such as a mobile phone, a tablet computer, a television, etc., which will not be listed one by one here.

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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

本公开提供了一显示面板及其制作方法、显示装置，属于显示技术领域。该显示面板包括异形显示区(11b)；显示面板(10)还包括衬底基板和设于衬底基板一侧的多个像素(20)，多个像素(20)在衬底基板上的正投影与异形显示区(11)的边缘在衬底基板上的正投影有交叠的像素为边缘像素(21)；边缘像素(21)设有遮光图形(30)，将边缘像素(21)划分为遮光区(211)和透光区(212)；边缘像素(21)具有预设灰阶值和亮度比值，亮度比值为边缘像素(21)的透光区(212)的亮度与全部区域透光时的亮度的比值，边缘像素(21)的预设灰阶值与亮度比值满足指数函数关系。本公开有助于弱化异形显示区(11)边缘显示时呈现锯齿形的问题。 (图4)

Description

显示面板及其制作方法、显示装置 技术领域
本公开涉及显示技术领域，尤其涉及一种显示面板及其制作方法、显示装置。
背景技术
随着显示屏在智能穿戴以及其他便携式电子设备中应用的普及，异形显示屏日渐受到消费者的青睐，异形显示屏使得显示屏的应用领域更加广阔，更能进一步满足人们对于显示的要求，如手表、可穿戴式手机等，因此，异形显示屏成为目前显示领域研究的热点之一。
相较于常规显示屏，异形显示屏的主要区别在于其显示区域呈现非矩形的特殊形状，而一般来说，显示屏中的像素多为矩形结构或者其他较为规则的结构，因此，当其应用于异形显示屏时，在显示屏的边缘区域，像素与显示屏的边界线并不能完全配合，由此，会造成显示屏的边缘区域在显示时呈现锯齿状的纹路。
所述背景技术部分公开的上述信息仅用于加强对本公开的背景的理解，因此它可以包括不构成对本领域普通技术人员已知的现有技术的信息。
发明内容
本公开的目的在于提供一种显示面板及其制作方法、显示装置，以弱化异形显示区边缘显示时呈现锯齿形的问题，提升显示面板的显示质量。
为实现上述发明目的，本公开采用如下技术方案：
根据本公开的第一个方面，提供一种显示面板，包括：显示区和位于所述显示区外围的非显示区，所述显示区包括主显示区和位于所述主显示区外围的异形显示区；
所述显示面板还包括衬底基板和设于所述衬底基板一侧的多个像素，所述像素位于所述显示区，所述多个像素在所述衬底基板上的正投影与所述异形显示区的边缘在所述衬底基板上的正投影有交叠的像素为边缘 像素；
所述边缘像素设有遮光图形，所述遮光图形将所述边缘像素划分为遮光区和透光区；
所述边缘像素具有预设灰阶值和亮度比值，所述亮度比值为所述边缘像素的透光区的亮度与该边缘像素的全部区域透光时的亮度的比值，所述边缘像素的预设灰阶值与该边缘像素的亮度比值满足指数函数关系。
在本公开的一种示例性实施例中，所述像素包括沿第一方向间隔排布的多个子像素，所述遮光图形包括沿所述第一方向排布的多个子遮光图形，所述子遮光图形与所述边缘像素的所述子像素一一对应；
所述子遮光图形具有第一分界边，所述第一分界边将所述子像素分割为子遮光区和子透光区，所述第一分界边与所述第一方向具有第一夹角α1，0≤α1≤90°；
所述异形显示区的边缘与所述边缘像素相交于第一交点和第二交点，所述第一交点和所述第二交点的连线为第一连线；
所述第一分界边与所述第一连线的倾斜方向相同。
在本公开的一种示例性实施例中，所述第一连线与所述第一方向具有第二夹角，所述第一夹角和所述第二夹角的差值不大于2°。
在本公开的一种示例性实施例中，所述第一夹角和所述第二夹角相等。
在本公开的一种示例性实施例中，所述异形显示区的边缘具有起始点和终点，沿所述异形显示区的边缘的起始点至终点方向移动，相邻两个所述边缘像素的所述子遮光图形的所述第一夹角之间的差值为b；
所述异形显示区的边缘对应的所述边缘像素的数量为n；
所述异形显示区的边缘具有近似角度β，所述近似角度为将所述异形显示区的边缘拟合为圆弧时对应的圆心角；则，
b＝β/n。
在本公开的一种示例性实施例中，所述异形显示区的边缘具有起始点和终点，沿所述异形显示区的边缘的起始点至终点方向移动，相邻两个所述边缘像素的所述子遮光图形的所述第一夹角之间的差值为b；则，
b＝90°/m；
其中，m为所述异形显示区的边缘拟合扩展为1/4圆弧时对应的所述边缘像素的数量。
在本公开的一种示例性实施例中，同一个所述像素中各所述子像素对应的所述子遮光图形的所述第一夹角相等。
在本公开的一种示例性实施例中，所述边缘像素的预设灰阶值与该边缘像素的亮度比值满足如下关系：
Figure PCTCN2022127880-appb-000001
其中，Gy为所述边缘像素的预设灰阶值，M为所述边缘像素的透光区的亮度，N为所述边缘像素的全部区域透光时的亮度，k为第一常数，h为伽马值。
在本公开的一种示例性实施例中，k的取值为255，h的取值为2.2。
在本公开的一种示例性实施例中，所述异形显示区的边缘将对应的所述边缘像素划分为子显示区和子非显示区，所述边缘像素全部区域的面积为A0，所述边缘像素的子显示区的面积为A1，所述边缘像素非子显示区的面积为A2，A1+A2＝A0，则
Figure PCTCN2022127880-appb-000002
其中，Gy为所述边缘像素的预设灰阶值，h为伽马值。
根据本公开第二个方面，提供一种显示面板的制作方法，所述显示面板包括显示区和位于所述显示区外围的非显示区，所述显示区包括主显示区和位于所述主显示区外围的异形显示区，所述显示面板的制作方法包括：
提供衬底基板；
于所述衬底基板的一侧形成多个像素，所述像素位于所述显示区，所述多个像素在所述衬底基板上的正投影与所述异形显示区的边缘在所述衬底基板上的正投影有交叠的像素为边缘像素，所述边缘像素设有遮光图形，所述遮光图形将所述边缘像素划分为遮光区和透光区，所述边缘像素具有试验灰阶值；
设定所述边缘像素的预设灰阶值；
调整所述遮光图形的大小，改变所述边缘像素的亮度比值和试验灰 阶值，使得所述边缘像素的试验灰阶值与该边缘像素的预设灰阶值相等；
其中，所述亮度比值为所述边缘像素的透光区的亮度与该边缘像素的全部区域透光时的亮度的比值，所述边缘像素的试验灰阶值与该边缘像素的亮度比值满足指数函数关系。
在本公开的一种示例性实施例中，所述像素包括沿第一方向间隔排布的多个子像素，所述遮光图形包括沿所述第一方向排布的多个子遮光图形，所述子遮光图形与所述边缘像素的所述子像素一一对应；
所述子遮光图形具有第一分界边，所述第一分界边将所述子像素分割为子遮光区和子透光区，所述第一分界边与所述第一方向具有第一夹角α1，0≤α1≤90°；
所述异形显示区的边缘与所述边缘像素相交于第一交点和第二交点，所述第一交点和所述第二交点的连线为第一连线；
所述第一分界边与所述第一连线的倾斜方向相同。
在本公开的一种示例性实施例中，所述第一连线与所述第一方向具有第二夹角，所述第一夹角和所述第二夹角的差值不大于2°。
在本公开的一种示例性实施例中，所述第一夹角和所述第二夹角相等。
在本公开的一种示例性实施例中，所述异形显示区的边缘具有起始点和终点，沿所述异形显示区的边缘的起始点至终点方向移动，相邻两个所述边缘像素的所述子遮光图形的所述第一夹角之间的差值为b；
所述异形显示区的边缘对应的所述边缘像素的数量为n；
所述异形显示区的边缘具有近似角度β，所述近似角度为将所述异形显示区的边缘拟合为圆弧时对应的圆心角；则，
b＝β/n。
在本公开的一种示例性实施例中，所述异形显示区的边缘具有起始点和终点，沿所述异形显示区的边缘的起始点至终点方向移动，相邻两个所述边缘像素的所述子遮光图形的所述第一夹角之间的差值为b；则，
b＝90°/m；
其中，m为所述异形显示区的边缘拟合扩展为1/4圆弧时对应的所述边缘像素的数量。
在本公开的一种示例性实施例中，同一个所述像素中各所述子像素对应的所述子遮光图形的所述第一夹角相等。
在本公开的一种示例性实施例中，其中，所述子遮光图形具有在第三方向上的设计长度，所述第三方向与所述第一方向具有第三夹角，所述第三夹角大于所述第一夹角；
在步骤所述调整所述遮光图形的大小中，通过调整所述子遮光图形的设计长度，调整所述子遮光图形的大小，进而改变对应的所述遮光图形的大小。
在本公开的一种示例性实施例中，所述边缘像素的试验灰阶值与该边缘像素的亮度比值满足如下关系：
Figure PCTCN2022127880-appb-000003
其中，Gy′为所述边缘像素的试验灰阶值，M为所述边缘像素的透光区的亮度，N为所述边缘像素的全部区域透光时的亮度，k为第一常数，h为伽马值。
在本公开的一种示例性实施例中，所述异形显示区的边缘将对应的所述边缘像素划分为子显示区和子非显示区，所述边缘像素全部区域的面积为A0，所述边缘像素的子显示区的面积为A1，所述边缘像素非子显示区的面积为A2，A1+A2＝A0，则
Figure PCTCN2022127880-appb-000004
其中，Gy为所述边缘像素的预设灰阶值，h为伽马值。
根据本公开第三个方面，提供一种显示装置，包括如第一方面所述的显示面板。
本公开提供的显示面板，边缘像素设有遮光图形，遮光图形将边缘像素划分为遮光区和透光区。边缘像素具有预设灰阶值和亮度比值，亮度比值为边缘像素的透光区的亮度与该边缘像素的全部区域透光时的亮度的比值，边缘像素的预设灰阶值与该边缘像素的亮度比值满足指数函数关系。本公开中，通过将边缘像素透光区的亮度与该边缘像素的预设灰阶值建立对应关系，该方式综合考虑了像素在不同区域显示亮度不同的问题，有助于提升位于边缘像素两侧区域灰阶过渡的均匀性，从而弱 化异形显示区边缘显示时呈现锯齿形的问题，提升显示面板的显示质量。
附图说明
通过参照附图详细描述其示例实施方式，本公开的上述和其它特征及优点将变得更加明显。
图1是本公开示例性实施例中显示面板平面结构示意图；
图2是本公开示例性实施例中异形显示区部分结构示意图；
图3是本公开示例性实施例中异形显示区划分边缘像素结构示意图；
图4是本公开示例性实施例中遮光图形结构示意图；
图5是本公开示例性实施例中异形显示区边缘近似角度结构示意图；
图6是本公开示例性实施例中像素L255画面亮度分布示意图；
图7是本公开示例性实施例中遮光图形设计长度结构示意图。
图中主要元件附图标记说明如下：
10-显示面板；11-显示区；11a-主显示区；11b-异形显示区；12-非显示区；20-像素；201-子像素；21-边缘像素；211-遮光区；212-透光区；213-子显示区；214-子非显示区；L1-异形显示区的边缘；L2-第一连线；α2-第二夹角；30-遮光图形；301-子遮光图形；α1-第一夹角；L3-第一分界边；31-黑矩阵；α3-第三夹角。
具体实施方式
现在将参考附图更全面地描述示例实施例。然而，示例实施例能够以多种形式实施，且不应被理解为限于在此阐述的范例；相反，提供这些实施例使得本公开将更加全面和完整，并将示例实施例的构思全面地传达给本领域的技术人员。所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施例中。在下面的描述中，提供许多具体细节从而给出对本公开的实施例的充分理解。
在图中，为了清晰，可能夸大了区域和层的厚度。在图中相同的附图标记表示相同或类似的结构，因而将省略它们的详细描述。
所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施例中。在下面的描述中，提供许多具体细节从而给出对本公开的实施 例的充分理解。然而，本领域技术人员将意识到，可以实践本公开的技术方案而没有所述特定细节中的一个或更多，或者可以采用其它的方法、组元、材料等。在其它情况下，不详细示出或描述公知结构、材料或者操作以避免模糊本公开的主要技术创意。
当某结构在其它结构“上”时，有可能是指某结构一体形成于其它结构上，或指某结构“直接”设置在其它结构上，或指某结构通过另一结构“间接”设置在其它结构上。
用语“一个”、“一”、“所述”用以表示存在一个或多个要素/组成部分/等；用语“包括”和“具有”用以表示开放式的包括在内的意思并且是指除了列出的要素/组成部分/等之外还可存在另外的要素/组成部分/等。用语“第一”和“第二”等仅作为标记使用，不是对其对象的数量限制。
异形显示屏通常包括位于中心的主显示区，即正常显示区，和位于主显示区外围的异形显示区。相关技术中，通过对异形显示区的像素进行部分遮挡设计，以改善异形显示区边缘在显示时呈现锯齿不良的现象，然而，遮挡设计方式不够精确，无法满足高PPI(Pixels Per Inch，像素密度单位)显示产品的要求。
如图1、图2和图4所示，本公开实施方式中提供一种显示面板10，包括显示区11和位于显示区11外围的非显示区12，显示区11包括主显示区11a和位于主显示区11a外围的异形显示区11b；
显示面板10还包括衬底基板和设于衬底基板一侧的多个像素20，像素20位于显示区11，多个像素20在衬底基板上的正投影与异形显示区11b的边缘L1在衬底基板上的正投影有交叠的像素20为边缘像素21；边缘像素21设有遮光图形30，遮光图形30将边缘像素21划分为遮光区211和透光区212；边缘像素21具有预设灰阶值和亮度比值，亮度比值为边缘像素21的透光区212的亮度与该边缘像素21的全部区域透光时的亮度的比值，边缘像素21的预设灰阶值与该边缘像素21的亮度比值满足指数函数关系。
本公开提供的显示面板10，边缘像素21设有遮光图形30，遮光图形30将边缘像素21划分为遮光区211和透光区212。边缘像素21具有预设灰阶值和亮度比值，亮度比值为边缘像素21的透光区212的亮度与该边 缘像素21的全部区域透光时的亮度的比值，边缘像素21的预设灰阶值与该边缘像素21的亮度比值满足指数函数关系。本公开中，通过将边缘像素21透光区212的亮度与该边缘像素21的预设灰阶值建立对应关系，该方式综合考虑了像素20在不同区域显示亮度不同的问题，有助于提升位于边缘像素21两侧区域灰阶过渡的均匀性，从而弱化异形显示区11b边缘显示时呈现锯齿形的问题，提升显示面板10的显示质量。
下面结合附图对本公开实施方式提供的显示面板10的各部件进行详细说明：
如图1所示，本公开提供一种显示面板10，该显示面板10可以是液晶显示面板10((Liquid Crystal Display，LCD)。该显示面板10包括显示区11和位于显示区11外围的非显示区12，显示区11包括主显示区11a和位于主显示区11a外围的异形显示区11b。
显示区11用于显示画面，主显示区11a位于显示区11的中部。异形显示区11b位于主显示区11a的外围，异形显示区11b的边缘L1可以是圆形、弧形或曲线等，具体根据显示面板10的实际应用需求设定。
如图1、图2和图4所示，显示面板10包括衬底基板和设于衬底基板一侧的多个像素20，像素20位于显示区11。衬底基板可以是玻璃衬底或柔性衬底等，如聚酰亚胺柔性衬底。多个像素20间隔排布，具体地，多个像素20可沿第一方向X和第二方向Y阵列排布，第一方向X和第二方向Y具有一定的夹角，该夹角可以是0°到90°的任意角度。优选地，第一方向X和第二方向Y的夹角大致为90°。
多个像素20可由黑矩阵31分割而成，黑矩阵31由遮光材料形成，如由黑色树脂材料形成。每个像素20包括沿第一方向X间隔排布的多个子像素201，每个子像素201可对应发出不同颜色的光。举例而言，每个像素20包含三个子像素201，分别为红色子像素201、绿色子像素201和蓝色子像素201，该三个子像素201沿第一方向X依次排列。像素20内各个子像素201之间由黑矩阵31分割而成。
多个像素20在衬底基板上的正投影与异形显示区11b的边缘L1在衬底基板上的正投影有交叠的像素20为边缘像素21。即，在垂直于衬底基板方向上，与异形显示区11b的边缘L1对应的像素20为边缘像素21。 边缘像素21的数量可由异形显示区11b的边缘L1形状或长度决定。
边缘像素21设有遮光图形30，遮光图形30将边缘像素21划分为遮光区211和透光区212。遮光图形30可与黑矩阵31同层设置，即采用同材料和同一道工艺制作而成。在图4中，为清楚展示出遮光图形30的形状，对遮光图形30和黑矩阵31的填充图案做了透明化处理。边缘像素21的透光区212可用于显示，遮光区211不可用于显示。在此需说明的是，本公开中，除边缘像素21外，其他像素20的的全部区域均可为透光区，在主显示区11a内，每个像素20的各子像素201的区域全部为透光区，均可用于显示。在异形显示区11b内除边缘像素21外的其他像素20中，每个像素20的各子像素201的区域也全部为透光区212，均可用于显示。
在本公开一些实施例中，边缘像素21具有预设灰阶值。边缘像素21的预设灰阶值根据该边缘像素21被异形显示区11b的边缘L1划分后两侧区域的面积进行设定，使得边缘像素21的预设灰阶值能将异形显示区11b的边缘L1两侧区域的灰阶值均匀过渡。
如图3所示，举例而言，异形显示区11b的边缘L1将对应的边缘像素21划分为子显示区213和子非显示区214，边缘像素21全部区域的面积为A0，边缘像素21的子显示区213的面积为A1，边缘像素21非子显示区213的面积为A2，A1+A2＝A0。进一步地，根据子显示区213的面积A1和边缘像素21全部区域面积A0的比值，来设定边缘像素21的预设灰阶值。灰阶代表像素20亮度层级，现在显示行业一般以8bit Panel为基准，可划分为0～255灰阶数，共256个亮度层次。如定义当A1＝A0时，该边缘像素21的灰阶值为255，当A1＝0时，该边缘像素21灰阶值为0。在一具体实施例中，边缘像素21的预设灰阶值满足如下关系：
Figure PCTCN2022127880-appb-000005
其中，Gy为边缘像素21的预设灰阶值，h为伽马(Gamma)值，一般取值为2.2。
边缘像素21还具有亮度比值，亮度比值为边缘像素21的透光区212的亮度与该边缘像素21的全部区域透光时的亮度的比值，边缘像素21的预设灰阶值与该边缘像素21的亮度比值满足指数函数关系。其中，边 缘像素21亮度比值为该指数函数的底数，边缘像素21的预设灰阶值为函数值。
本公开中，边缘像素21的全部区域透光时的亮度定义为L255画面亮度。L255画面为全白画面。如图6所示，在实际显示中，像素20的透光区不同位置处的显示亮度不同。在图6中，某像素20的全部区域透光时(L255画面)，其中间区域01和靠近黑矩阵31的区域02较暗且亮度不均一。本公开将该情况予以考虑，基于边缘像素21透光区212的亮度和该边缘像素21全部区域透光时的亮度两者之间的比值，与边缘像素21的预设灰阶值建立对应关系，如此，有助于使得边缘像素21的实际灰阶值更精确地接近于预设灰阶值，提升位于边缘像素21两侧区域灰阶过渡的均匀性。
进一步地，边缘像素21的预设灰阶值与该边缘像素21的亮度比值满足如下关系：
Figure PCTCN2022127880-appb-000006
其中，Gy为边缘像素21的预设灰阶值，M为边缘像素21的透光区的亮度，N为边缘像素21的全部区域透光时的亮度，k为第一常数，取值可以为255，h为伽马值，取值可以为2.2。
如图2、图3和图4所示，在本公开一些实施例中，遮光图形30包括沿第一方向X排布的多个子遮光图形301，子遮光图形301与边缘像素21的子像素201一一对应；子遮光图形301具有第一分界边L3，第一分界边L3将子像素201分割为子遮光区211和子透光区212，第一分界边L3与第一方向X具有第一夹角α1，0≤α1≤90°；异形显示区11b的边缘L1与边缘像素21相交于第一交点和第二交点，第一交点和第二交点的连线为第一连线L2；第一分界边L3与第一连线L2的倾斜方向相同。在该实施例中，子遮光图形301的第一分界边L3与第一连线L2的倾斜方向相同，使得边缘像素21的透光区212的边缘与异形显示区11b的边缘L1的形状近似，从而更进一步地减少异形显示区的边缘出现锯齿形的概率。
在此需说明的是，边缘像素21中的子像素201区对应的子遮光图形301的形状大小同样根据上述所记载的边缘像素21对应的遮光图形30的 形状进行设定，在此本公开不详细赘述。
在本公开一些实施例中，第一连线L2与第一方向X具有第二夹角α2，第一夹角α1和第二夹角α2的差值不大于2°，优选地，不大于1°。以使边缘像素21的透光区212的边缘与异形显示区11b的边缘L1的形状更加相近。
在一具体实施例中，第一夹角α1和第二夹角α2相等。在另一实施例中，如图5所示，异形显示区11b的边缘L1具有起始点和终点，沿异形显示区11b的边缘L1的起始点至终点方向移动，相邻两个边缘像素21的子遮光图形301的第一夹角α1之间的差值为b；异形显示区11b的边缘L1对应的边缘像素21的数量为n；异形显示区11b的边缘L1具有近似角度β，近似角度β为将异形显示区11b的边缘L1拟合为圆弧时对应的圆心角；则，b＝β/n。其中，异形显示区11b的边缘L1为具有一定弧度的曲线。
在又一实施例中，异形显示区11b的边缘L1具有起始点和终点，沿异形显示区11b的边缘L1的起始点至终点方向移动，相邻两个边缘像素21的子遮光图形301的第一夹角α1之间的差值为b；则b＝90°/m。其中，m为异形显示区11b的边缘L1拟合扩展为1/4圆弧时对应的边缘像素21的数量。在此需说明的是，异形显示区11b的边缘L1拟合扩展为1/4圆弧时对应的边缘像素21的数量包含异形显示区11b的边缘L1原本对应的边缘像素21的数量，以及扩展为1/4圆弧时其扩展出的片段所对应的扩展出来的边缘像素21的数量，扩展出的边缘像素21的排布方式、形状大小与其他像素20的排布方式以及形状大小均相同。当相邻两个边缘像素21的子遮光图形301的第一夹角α1之间的差值相等时，便于实现遮光图形30的自动化设计。在此需说明的是，当异形显示区11b的边缘L1拟合扩展为1/4圆弧时，该圆弧两个端点处，其中一个端点对应的边缘像素21的子遮光图形301的第一夹角α1可定义为90°，则另一个端点对应的边缘像素21的子遮光图形301的第一夹角α1为0°。
如图4所示，在本公开一些实施例中，同一个边缘像素21中各子像素201对应的子遮光图形301的第一夹角α1相等。进一步地，同一个边缘像素21中各子像素201对应的子遮光图形301的形状大小相同，以提 升各个子像素201显示的均一性。
如图1、图2和图4所示，本公开还提供一种显示面板10的制作方法，显示面板10包括显示区11和位于显示区11外围的非显示区12，显示区11包括主显示区11a和位于主显示区11a外围的异形显示区11b，显示面板10的制作方法包括如下步骤：
步骤S100，提供衬底基板；
步骤S200，于衬底基板的一侧形成多个像素20，像素20位于显示区11，多个像素20在衬底基板上的正投影与异形显示区11b的边缘L1在衬底基板上的正投影有交叠的像素20为边缘像素21，边缘像素21设有遮光图形30，遮光图形30将边缘像素21划分为遮光区211和透光区212，边缘像素21具有试验灰阶值；
步骤S300，设定边缘像素21的预设灰阶值；
步骤S400，调整遮光图形30的大小，改变边缘像素21的亮度比值和试验灰阶值，使得边缘像素21的试验灰阶值与该边缘像素21的预设灰阶值相等；
其中，亮度比值为边缘像素21的透光区212的亮度与该边缘像素21的全部区域透光时的亮度的比值，边缘像素21的试验灰阶值与该边缘像素21的亮度比值满足指数函数关系。
在步骤S200中，边缘像素21的试验灰阶值为指数函数的函数值，边缘像素21的亮度比值为指数函数的底数。边缘像素21的试验灰阶值会随着该边缘像素21的亮度比值的变化而变化，而边缘像素21的亮度比值会随着遮光图形30的大小而变化。
在一些实施例中，边缘像素21的试验灰阶值与该边缘像素21的亮度比值满足如下关系：
Figure PCTCN2022127880-appb-000007
其中，Gy′为边缘像素21的试验灰阶值，M为边缘像素21的透光区的亮度，N为边缘像素21的全部区域透光时的亮度，k为第一常数，取值可以为255，h为伽马值，取值可以为2.2。
在本公开中，显示面板10一般包括相对设置的阵列基板和彩膜基板， 以及密封于阵列基板和彩膜基板之间的液晶层。其中，阵列基板包括上述的衬底基板和设于衬底基板一侧的驱动电路，驱动电路用于驱动液晶层偏转。彩膜基板包括基板和设于基板一侧的彩膜层，彩膜层可包括黑矩阵31和由黑矩阵31分割成的滤光膜，不同区域滤光膜可透过不同颜色的光，如红光、绿光和蓝光。显示面板10的多个像素20也由黑矩阵31分割而成。遮光图形30可与黑矩阵31同层设置。
在步骤S200中，黑矩阵31和遮光图形30均有遮光材料形成，如具体地，可在基板的一侧沉积形成遮光材料层，随后对该遮光材料层进行图案化，形成遮光图形30和黑矩阵31。在此需说明的是，遮光图形30的设计需满足本公开对遮光图形30的设定条件，如使得边缘像素21的试验灰阶值与该边缘像素21的预设灰阶值相等。
在步骤S300中，设定边缘像素21的预设灰阶值。边缘像素21的预设灰阶值根据该边缘像素21被异形显示区的边缘划分后两侧区域的面积进行设定，使得边缘像素21的预设灰阶值能将异形显示区的边缘两侧区域的灰阶值均匀过渡。举例而言，如图3所示，异形显示区11b的边缘L1将对应的边缘像素21划分为子显示区213和子非显示区214，边缘像素21全部区域的面积为A0，边缘像素21的子显示区213的面积为A1，边缘像素21非子显示区213的面积为A2，A1+A2＝A0。进一步地，根据子显示区213的面积A1和边缘像素21全部区域面积A0的比值，来设定边缘像素21的预设灰阶值。灰阶代表像素20亮度层级，现在显示行业一般以8bit Panel为基准，可划分为0～255灰阶数，共256个亮度层次。如定义当A1＝A0时，该边缘像素21的灰阶值为255，当A1＝0时，该边缘像素21灰阶值为0。在一具体实施例中，边缘像素21的预设灰阶值满足如下关系：
Figure PCTCN2022127880-appb-000008
其中，Gy为边缘像素21的预设灰阶值，h为伽马值，一般取值为2.2。
在步骤S400中，调整遮光图形的大小，改变边缘像素的亮度比值和试验灰阶值，使得边缘像素的试验灰阶值与该边缘像素的预设灰阶值相等。
在该步骤中，遮光图形30的大小可通过调整遮光图形30某一方向上的尺寸而完成。在本公开一些实施例中，需先对遮光图形30的形状上的某些参数进行设定。
如图2至图4所示，具体地，遮光图形30包括沿第一方向X排布的多个子遮光图形301，子遮光图形301与边缘像素21的子像素201一一对应；子遮光图形301具有第一分界边L3，第一分界边L3将子像素201分割为子遮光区211和子透光区212，第一分界边L3与第一方向X具有第一夹角α1，0≤α1≤90°；异形显示区11b的边缘L1与边缘像素21相交于第一交点和第二交点，第一交点和第二交点的连线为第一连线L2；第一分界边L3与第一连线L2的倾斜方向相同。第一连线L2与第一方向X具有第二夹角α2，第一夹角α1和第二夹角α2的差值不大于2°,优选地，不大于1°。
在一具体实施例中，第一夹角α1和第二夹角α2相等。如图5所示，在另一实施例中，异形显示区11b的边缘L1具有起始点和终点，沿异形显示区11b的边缘L1的起始点至终点方向移动，相邻两个边缘像素21的子遮光图形301的第一夹角α1之间的差值为b；异形显示区11b的边缘L1对应的边缘像素21的数量为n；异形显示区11b的边缘L1具有近似角度β，近似角度为将异形显示区11b的边缘L1拟合为圆弧时对应的圆心角；则，b＝β/n。其中，异形显示区11b的边缘L1为具有一定弧度的曲线。
在又一实施例中，异形显示区11b的边缘L1具有起始点和终点，沿异形显示区11b的边缘L1的起始点至终点方向移动，相邻两个边缘像素21的子遮光图形301的第一夹角α1之间的差值为b；则b＝90°/m。其中，m为异形显示区11b的边缘L1拟合扩展为1/4圆弧时对应的边缘像素21的数量。在此需说明的是，异形显示区11b的边缘L1拟合扩展为1/4圆弧时对应的边缘像素21的数量包含异形显示区11b的边缘L1原本对应的边缘像素21的数量，以及扩展为1/4圆弧时其扩展出的片段所对应的扩展出来的边缘像素21的数量，扩展出的边缘像素21的排布方式、形状大小与其他像素20的排布方式以及形状大小均相同。当相邻两个边缘像素21的子遮光图形301的第一夹角α1之间的差值相等时，便于实 现遮光图形30的自动化设计。同一个边缘像素21中各子像素201对应的子遮光图形301的第一夹角α1相等。进一步地，同一个边缘像素21中各子像素201对应的子遮光图形301的形状大小相同，以提升各个子像素201显示的均一性。
在确定遮光图形30第一分界边L3的倾斜角度后，再通过调整遮光图形30在某一方向上的长度来确定遮光图形30的大小。如图7所示，，子遮光图形301具有在第三方向Z上的设计长度h，第三方向Z与第一方向X具有第三夹角α3，第三夹角α3大于第一夹角α1。第三方向Z可以与像素20的边缘平行。通过调整子遮光图形301的设计长度h，调整子遮光图形301的大小，进而改变对应的遮光图形30的大小。
本公开还提供一种显示装置，包括显示面板10，该显示面板10可以为上述任一实施例中的显示面板10。其具体结构和有益效果可参考上文中显示面板10的实施方式，在此不再赘述。本公开的显示装置可以是手机、平板电脑、电视等电子设备，在此不再一一列举。
需要说明的是，尽管在附图中以特定顺序描述了本公开中方法的各个步骤，但是，这并非要求或者暗示必须按照该特定顺序来执行这些步骤，或是必须执行全部所示的步骤才能实现期望的结果。附加的或备选的，可以省略某些步骤，将多个步骤合并为一个步骤执行，以及/或者将一个步骤分解为多个步骤执行等，均应视为本公开的一部分。
应可理解的是，本公开不将其应用限制到本说明书提出的部件的详细结构和布置方式。本公开能够具有其他实施方式，并且能够以多种方式实现并且执行。前述变形形式和修改形式落在本公开的范围内。应可理解的是，本说明书公开和限定的本公开延伸到文中和/或附图中提到或明显的两个或两个以上单独特征的所有可替代组合。所有这些不同的组合构成本公开的多个可替代方面。本说明书的实施方式说明了已知用于实现本公开的最佳方式，并且将使本领域技术人员能够利用本公开。

Claims (21)

  1. 一种显示面板，包括：显示区和位于所述显示区外围的非显示区，所述显示区包括主显示区和位于所述主显示区外围的异形显示区；
    所述显示面板还包括衬底基板和设于所述衬底基板一侧的多个像素，所述像素位于所述显示区，所述多个像素在所述衬底基板上的正投影与所述异形显示区的边缘在所述衬底基板上的正投影有交叠的像素为边缘像素；
    所述边缘像素设有遮光图形，所述遮光图形将所述边缘像素划分为遮光区和透光区；
    所述边缘像素具有预设灰阶值和亮度比值，所述亮度比值为所述边缘像素的透光区的亮度与该边缘像素的全部区域透光时的亮度的比值，所述边缘像素的预设灰阶值与该边缘像素的亮度比值满足指数函数关系。
  2. 根据权利要求1所述的显示面板，其中，所述像素包括沿第一方向间隔排布的多个子像素，所述遮光图形包括沿所述第一方向排布的多个子遮光图形，所述子遮光图形与所述边缘像素的所述子像素一一对应；
    所述子遮光图形具有第一分界边，所述第一分界边将所述子像素分割为子遮光区和子透光区，所述第一分界边与所述第一方向具有第一夹角α1，0≤α1≤90°；
    所述异形显示区的边缘与所述边缘像素相交于第一交点和第二交点，所述第一交点和所述第二交点的连线为第一连线；
    所述第一分界边与所述第一连线的倾斜方向相同。
  3. 根据权利要求2所述的显示面板，其中，所述第一连线与所述第一方向具有第二夹角，所述第一夹角和所述第二夹角的差值不大于2°。
  4. 根据权利要求3所述的显示面板，其中，所述第一夹角和所述第二夹角相等。
  5. 根据权利要求2所述的显示面板，其中，所述异形显示区的边缘具有起始点和终点，沿所述异形显示区的边缘的起始点至终点方向移动，相邻两个所述边缘像素的所述子遮光图形的所述第一夹角之间的差值为b；
    所述异形显示区的边缘对应的所述边缘像素的数量为n；
    所述异形显示区的边缘具有近似角度β，所述近似角度为将所述异形显示区的边缘拟合为圆弧时对应的圆心角；则，
    b＝β/n。
  6. 根据权利要求2所述的显示面板，其中，所述异形显示区的边缘具有起始点和终点，沿所述异形显示区的边缘的起始点至终点方向移动，相邻两个所述边缘像素的所述子遮光图形的所述第一夹角之间的差值为b；则，
    b＝90°/m；
    其中，m为所述异形显示区的边缘拟合扩展为1/4圆弧时对应的所述边缘像素的数量。
  7. 根据权利要求2所述的显示面板，其中，同一个所述像素中各所述子像素对应的所述子遮光图形的所述第一夹角相等。
  8. 根据权利要求1所述的显示面板，其中，所述边缘像素的预设灰阶值与该边缘像素的亮度比值满足如下关系：
    Figure PCTCN2022127880-appb-100001
    其中，Gy为所述边缘像素的预设灰阶值，M为所述边缘像素的透光区的亮度，N为所述边缘像素的全部区域透光时的亮度，k为第一常数，h为伽马值。
  9. 根据权利要求8所述的显示面板，其中，k的取值为255，h的取值为2.2。
  10. 根据权利要求1所述的显示面板，其中，所述异形显示区的边缘将对应的所述边缘像素划分为子显示区和子非显示区，所述边缘像素全部区域的面积为A0，所述边缘像素的子显示区的面积为A1，所述边缘像素非子显示区的面积为A2，A1+A2＝A0，则
    Figure PCTCN2022127880-appb-100002
    其中，Gy为所述边缘像素的预设灰阶值，h为伽马值。
  11. 一种显示面板的制作方法，所述显示面板包括显示区和位于所述显示区外围的非显示区，所述显示区包括主显示区和位于所述主显示区外围的异形显示区，所述显示面板的制作方法包括：
    提供衬底基板；
    于所述衬底基板的一侧形成多个像素，所述像素位于所述显示区，所述多个像素在所述衬底基板上的正投影与所述异形显示区的边缘在所述衬底基板上的正投影有交叠的像素为边缘像素，所述边缘像素设有遮光图形，所述遮光图形将所述边缘像素划分为遮光区和透光区，所述边缘像素具有试验灰阶值；
    设定所述边缘像素的预设灰阶值；
    调整所述遮光图形的大小，改变所述边缘像素的亮度比值和试验灰阶值，使得所述边缘像素的试验灰阶值与该边缘像素的预设灰阶值相等；
    其中，所述亮度比值为所述边缘像素的透光区的亮度与该边缘像素的全部区域透光时的亮度的比值，所述边缘像素的试验灰阶值与该边缘像素的亮度比值满足指数函数关系。
  12. 根据权利要求11所述的显示面板的制作方法，其中，所述像素包括沿第一方向间隔排布的多个子像素，所述遮光图形包括沿所述第一方向排布的多个子遮光图形，所述子遮光图形与所述边缘像素的所述子像素一一对应；
    所述子遮光图形具有第一分界边，所述第一分界边将所述子像素分割为子遮光区和子透光区，所述第一分界边与所述第一方向具有第一夹角α1，0≤α1≤90°；
    所述异形显示区的边缘与所述边缘像素相交于第一交点和第二交点，所述第一交点和所述第二交点的连线为第一连线；
    所述第一分界边与所述第一连线的倾斜方向相同。
  13. 根据权利要求12所述的显示面板的制作方法，其中，所述第一连线与所述第一方向具有第二夹角，所述第一夹角和所述第二夹角的差值不大于2°。
  14. 根据权利要求13所述的显示面板的制作方法，其中，所述第一夹角和所述第二夹角相等。
  15. 根据权利要求13所述的显示面板的制作方法，其中，所述异形显示区的边缘具有起始点和终点，沿所述异形显示区的边缘的起始点至终点方向移动，相邻两个所述边缘像素的所述子遮光图形的所述第一夹 角之间的差值为b；
    所述异形显示区的边缘对应的所述边缘像素的数量为n；
    所述异形显示区的边缘具有近似角度β，所述近似角度为将所述异形显示区的边缘拟合为圆弧时对应的圆心角；则，
    b＝β/n。
  16. 根据权利要求13所述的显示面板的制作方法，其中，所述异形显示区的边缘具有起始点和终点，沿所述异形显示区的边缘的起始点至终点方向移动，相邻两个所述边缘像素的所述子遮光图形的所述第一夹角之间的差值为b；则，
    b＝90°/m；
    其中，m为所述异形显示区的边缘拟合扩展为1/4圆弧时对应的所述边缘像素的数量。
  17. 根据权利要求12所述的显示面板的制作方法，其中，同一个所述像素中各所述子像素对应的所述子遮光图形的所述第一夹角相等。
  18. 根据权利要求12至17任一项所述的显示面板的制作方法，其中，所述子遮光图形具有在第三方向上的设计长度，所述第三方向与所述第一方向具有第三夹角，所述第三夹角大于所述第一夹角；
    在步骤所述调整所述遮光图形的大小中，通过调整所述子遮光图形的设计长度，调整所述子遮光图形的大小，进而改变对应的所述遮光图形的大小。
  19. 根据权利要求11所述的显示面板的制作方法，其中，所述边缘像素的试验灰阶值与该边缘像素的亮度比值满足如下关系：
    Figure PCTCN2022127880-appb-100003
    其中，Gy′为所述边缘像素的试验灰阶值，M为所述边缘像素的透光区的亮度，N为所述边缘像素的全部区域透光时的亮度，k为第一常数，h为伽马值。
  20. 根据权利要求11所述的显示面板的制作方法，其中，所述异形显示区的边缘将对应的所述边缘像素划分为子显示区和子非显示区，所述边缘像素全部区域的面积为A0，所述边缘像素的子显示区的面积为 A1，所述边缘像素非子显示区的面积为A2，A1+A2＝A0，则
    Figure PCTCN2022127880-appb-100004
    其中，Gy为所述边缘像素的预设灰阶值，h为伽马值。
  21. 一种显示装置，包括如权利要求1-10任一项所述的显示面板。
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108682308A (zh) * 2018-07-27 2018-10-19 京东方科技集团股份有限公司 显示面板及其显示方法、显示装置
CN109037292A (zh) * 2018-08-01 2018-12-18 维沃移动通信有限公司 一种显示屏及移动终端
CN109256076A (zh) * 2018-08-30 2019-01-22 京东方科技集团股份有限公司 边缘像素显示方法、系统、存储设备和显示装置
WO2022205521A1 (zh) * 2021-03-31 2022-10-06 Tcl华星光电技术有限公司 显示面板的灰阶补偿方法、灰阶补偿装置及灰阶补偿系统

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CN108682308A (zh) * 2018-07-27 2018-10-19 京东方科技集团股份有限公司 显示面板及其显示方法、显示装置
CN109037292A (zh) * 2018-08-01 2018-12-18 维沃移动通信有限公司 一种显示屏及移动终端
CN109256076A (zh) * 2018-08-30 2019-01-22 京东方科技集团股份有限公司 边缘像素显示方法、系统、存储设备和显示装置
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