Array substrate, display panel and mask structure

Abstract

The application provides an array substrate, a display panel and a mask structure. The array substrate comprises a substrate and pixel units. The pixel units are arranged in an array on the substrate. Each pixel unit is rectangular. Each pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel. The first sub-pixel and the second sub-pixel are two right-angle trapezoids which are parallel and equal in length. The third sub-pixel is rectangular. Two sides of the third sub-pixel are parallel and equal in length to the upper bases of the first sub-pixel and the second sub-pixel. The colors of the adjacent sub-pixels between any two adjacent pixel units are consistent. The technical scheme can reduce the difficulty in manufacturing a high-resolution display panel, and improve the service life and resolution of the display panel.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to an array substrate, a display panel, and a mask structure. Background Technology

[0002] In OLED displays, subpixels are arranged in a matrix on a substrate. Each subpixel is typically formed by stacking different functional layers of organic materials using vapor deposition or inkjet printing (IJP) techniques, creating an organic electroluminescent structure at the corresponding subpixel position on the array substrate. Traditionally, one subpixel in an OLED array substrate corresponds to one mask opening. However, as the resolution of the display panel increases, the fabrication of these mask openings becomes more challenging, thus limiting the improvement in display device resolution. Summary of the Invention

[0003] The main objective of this invention is to provide an array substrate, a display panel, and a mask structure, which aim to reduce the difficulty of manufacturing high-resolution display panels and improve the lifespan and resolution of the display panels.

[0004] To achieve the above objectives, the present invention proposes an array substrate, which includes a substrate and pixel units. A plurality of pixel units are arrayed on the substrate. Each pixel unit is rectangular, and each pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel. The first sub-pixel and the second sub-pixel are two right trapezoids with parallel and equal sloping sides. The third sub-pixel is rectangular, and its two sides are parallel and equal in length to the top base of the first sub-pixel and the second sub-pixel, respectively. The colors of adjacent sub-pixels between any two adjacent pixel units are the same.

[0005] In one embodiment of the array substrate of this application, in four pixel units arranged in two rows and two columns, four adjacent first sub-pixels are spliced ​​together to form a hexagon. The top and bottom sides of the hexagon are twice the top bottom side of the first sub-pixel, and the four hypotenuses of the hexagon are equal to the hypotenuses of the first sub-pixel.

[0006] Alternatively, four adjacent second sub-pixels are joined to form a hexagon, the top and bottom sides of which are twice the length of the top base of the second sub-pixel, and the four hypotenuses of the hexagon are equal to the hypotenuses of the second sub-pixel.

[0007] Alternatively, four adjacent third sub-pixels can be joined together to form a rectangle, wherein the side lengths of the two adjacent sides of the rectangle are twice the top and bottom sides of the first and second sub-pixels, respectively.

[0008] In one embodiment of the array substrate of this application, the first sub-pixel, the second sub-pixel, and the third sub-pixel are respectively a blue sub-pixel, a red sub-pixel, and a green sub-pixel;

[0009] Wherein, the area of ​​the first sub-pixel is greater than or equal to that of the second sub-pixel, and the area of ​​the second sub-pixel is greater than that of the third sub-pixel.

[0010] In one embodiment of the array substrate of this application, the pixel unit is square, and the first sub-pixel and the second sub-pixel are symmetrically arranged along the diagonal of the pixel unit; the sloping waist length of the first sub-pixel and the second sub-pixel is 1 / 2 to 2 / 3 of the length of the diagonal.

[0011] In one embodiment of the array substrate of this application, the sloping waist length of the first sub-pixel and the second sub-pixel is 1 / 2 of the length of the diagonal, the third sub-pixel is rectangular, and the side length of the third sub-pixel is half the side length of the pixel unit.

[0012] In one embodiment of the array substrate of this application, the pixel unit is square, the angle between the sloping side of the second sub-pixel and the bottom edge of the second sub-pixel is greater than or equal to 30 degrees and less than 45 degrees; the side length of the third sub-pixel is 1 / 3 to 1 / 2 of the side length of the pixel unit.

[0013] In one embodiment of the array substrate of this application, the third sub-pixel is rectangular, the long side of the third sub-pixel is 1 / 2 of the side length of the pixel unit, and the short side of the third sub-pixel is 1 / 3 of the side length of the pixel unit.

[0014] In one embodiment of the array substrate of this application, the area ratio of the first sub-pixel, the second sub-pixel, and the third sub-pixel is 5:3:2.

[0015] This application also proposes a display panel, which includes an encapsulation layer and an array substrate. The array substrate includes a substrate and pixel units. A plurality of pixel units are arrayed on the substrate. The pixel units are rectangular. Each pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel. The first sub-pixel and the second sub-pixel are two right trapezoids with parallel and equal sloping sides. The third sub-pixel is rectangular, and the two sides of the third sub-pixel are parallel and equal in length to the top bottom sides of the first sub-pixel and the second sub-pixel, respectively. The sub-pixels connected between any two adjacent pixel units have the same color.

[0016] The encapsulation layer is disposed on the side of the pixel unit that is opposite to the substrate.

[0017] This application also proposes a mask structure for fabricating an array substrate. The array substrate includes a substrate and pixel units. Multiple pixel units are arrayed on the substrate. Each pixel unit is rectangular. Each pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel. The first sub-pixel and the second sub-pixel are two right trapezoids with parallel and equal sloping sides. The third sub-pixel is rectangular, and the two sides of the third sub-pixel are parallel and equal in length to the top and bottom sides of the first sub-pixel and the second sub-pixel, respectively. The sub-pixels connected between any two adjacent pixel units have the same color.

[0018] The mask structure includes at least one mask plate with a mask opening. The shape of the mask opening corresponds to the shape formed by splicing together multiple sub-pixels of the same color on the array substrate.

[0019] The technical solution of this application ensures that the colors of the sub-pixels connected between adjacent pixel units in the array substrate are consistent. This configuration allows sub-pixels of the same color between adjacent pixel units to share the same mask opening, thereby reducing the difficulty of mask fabrication required for high-resolution display panels and thus lowering the overall fabrication difficulty. Because of the reduced fabrication difficulty, higher-resolution display panels can be manufactured, improving the resolution of the display panel. Simultaneously, a higher-resolution display panel can be obtained without fabricating an ultra-fine mask, reducing the risk of mask deformation and increasing the lifespan of the mask.

[0020] In addition, each pixel unit is set as a structure formed by splicing two right-angled trapezoidal sub-pixels and a rectangular sub-pixel, and the sloping sides between the two right-angled trapezoids are parallel and equal. The two sides of the third sub-pixel are parallel and equal to the upper base of the two right-angled trapezoids respectively. With this setting, the pixel definition layer in a single pixel unit is only the sloping sides and the upper base of the two right-angled trapezoids, which can reduce the length and width of the pixel definition layer in a single pixel unit, reduce the area ratio of the pixel definition layer in a single pixel unit, and improve the aperture ratio of a single pixel unit.

[0021] Furthermore, subpixels of the same color between two adjacent pixel units do not require a pixel definition layer, reducing the area occupied by the pixel definition layer in the array substrate and increasing the aperture ratio of the array substrate. The synergistic effect of subpixels in adjacent pixel units increases the luminous efficiency and brightness of the subpixels, which can reduce the current density delivered to the pixel electrodes, thereby reducing the risk of subpixel damage and increasing the service life of the subpixels and the array substrate. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a partial schematic diagram of an embodiment of the array substrate of this application;

[0024] Figure 2 This is a partial schematic diagram of another embodiment of the array substrate of this application;

[0025] Figure 3 This is a partial schematic diagram of yet another embodiment of the array substrate of this application;

[0026] Figure 4 This is a partial schematic diagram of another embodiment of the array substrate of this application;

[0027] Figure 5 This is a schematic diagram of a cyclic array in the array substrate of this application;

[0028] Figure 6 This is a schematic diagram of the pixel unit in the array substrate of this application;

[0029] Figure 7 This is a schematic diagram of an embodiment of the mask plate of this application;

[0030] Figure 8 This is a schematic diagram of another embodiment of the mask plate of this application;

[0031] Figure 9 This is a schematic diagram of yet another embodiment of the mask plate of this application.

[0032] Explanation of icon numbers:

[0033]

[0034]

[0035] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0040] The present invention proposes an array substrate 100, a display panel, and a mask structure.

[0041] The technical solution of this application will be described below with reference to specific embodiments.

[0042] Example 1:

[0043] This embodiment proposes an array substrate 100.

[0044] Please refer to Figures 1 to 4In some embodiments of the array substrate 100 of this application, the array substrate 100 includes a substrate and pixel units 11. A plurality of pixel units 11 are arrayed on the substrate. The pixel units 11 are rectangular. Each pixel unit 11 includes a first sub-pixel 111, a second sub-pixel 112, and a third sub-pixel 113. The first sub-pixel 111 and the second sub-pixel 112 are two right-angled trapezoids with parallel and equal lengths on their sloping sides. The third sub-pixel 113 is rectangular, and the two sides of the third sub-pixel 113 are parallel and equal in length to the top bottom sides of the first sub-pixel 111 and the second sub-pixel 112, respectively. The colors of adjacent sub-pixels between any two adjacent pixel units 11 are the same.

[0045] The array substrate 100 of the OLED (Organic Emitting Light) display panel includes a plurality of pixel units 11 arranged in an array. Each pixel unit 11 includes a first sub-pixel 111, a second sub-pixel 112, and a third sub-pixel 113. The first sub-pixel 111, the second sub-pixel 112, and the third sub-pixel 113 in each pixel unit 11 are of different colors, so that when emitting light, the desired color can be formed by combining the brightest colors. For example, commonly, the pixel unit 11 uses red (R) sub-pixels, green (G) sub-pixels, and blue (B) sub-pixels as the three primary colors. Each sub-pixel has 256 combinations of brightness levels. By controlling the three sub-pixels to display different brightness levels, different colors can be formed.

[0046] Pixel unit 11 includes a cathode, an anode, an electroluminescent layer, and a pixel definition layer. The electroluminescent layer is located between the cathode and the anode. The first sub-pixel 111, the second sub-pixel 112, and the third sub-pixel 113 each include a light-emitting area (display area) and a non-light-emitting area (non-display area). The light-emitting area of ​​each sub-pixel includes a cathode, an anode, and an electroluminescent layer. The electroluminescent layer is located between the anode and the cathode so that holes in the anode and free electrons in the cathode can move to the electroluminescent layer and combine to make the electroluminescent layer emit light. The pixel definition layer is located between two adjacent sub-pixels to prevent the organic material layers of two adjacent sub-pixels from mixing colors.

[0047] When manufacturing a display panel, a three-stage vapor deposition process is usually required to form a light-emitting layer of the corresponding color in the light-emitting area of ​​the corresponding color pixel region. The mask 200 used for vapor deposition includes a blocking area 220 and several mask openings 210. In order to avoid the shading effect on the sub-pixel during vapor deposition, a certain distance must be maintained between the sub-pixel and the adjacent blocking area 220. This results in the reduction of the vertical length of the sub-pixel, which affects the aperture ratio of each sub-pixel. In the technical solution of this application, when multiple pixel units 11 are arranged in an array to form an array substrate 100, the colors of the sub-pixels connected between four adjacent pixel units 11 are consistent. With this setting, when forming sub-pixels of the same color in four adjacent pixel units 11, the sub-pixels at the connection position of the four pixel units 11 can share a mask opening 210, thereby allowing multiple adjacent sub-pixels to share the same mask opening 210 margin, increasing the evaporation area of ​​the electroluminescent layer, that is, increasing the light-emitting area in the array substrate 100, thereby increasing the aperture ratio of the array substrate 100. Moreover, there is no need to set a pixel definition layer between two adjacent pixel units 11, increasing the light-emitting efficiency of the sub-pixels. By using the sub-pixels of adjacent pixel units 11 to increase the light-emitting brightness, the current density delivered to the pixel electrode can be reduced, thereby reducing the risk of damage to the sub-pixels.

[0048] In addition, in this application, the first sub-pixel 111 and the second sub-pixel 112 in each pixel unit 11 are set as right-angled trapezoids, and the sloping sides of the two right-angled trapezoids are parallel and of equal length. The third sub-pixel 113 is set as a rectangular structure with the upper base of the two right-angled trapezoids as adjacent sides. With this setting, the area occupied by the pixel definition layer in a single pixel unit 11 is only the sloping side of a single right-angled trapezoid and the upper base of the two right-angled trapezoids, which effectively reduces the area ratio of the pixel definition layer in a single pixel unit 11 and improves the aperture ratio of a single pixel unit 11.

[0049] Therefore, it is understandable that the technical solution of this application makes the colors of adjacent sub-pixels between adjacent pixel units 11 consistent. With this setting, sub-pixels of the same color between adjacent pixel units 11 can share the same mask opening 210, which can reduce the manufacturing difficulty of the mask plate 200 required for high-resolution display panels, and reduce the manufacturing difficulty of high-resolution display panels. Due to the reduced manufacturing difficulty, higher resolution display panels can be manufactured, thus improving the resolution of the display panel. At the same time, a higher resolution display panel can be obtained without the need to manufacture an ultra-fine mask plate 200, reducing the risk of deformation of the mask plate 200 and increasing the service life of the mask plate 200.

[0050] Furthermore, subpixels of the same color between two adjacent pixel units 11 do not require a pixel definition layer, reducing the area occupied by the pixel definition layer in the array substrate 100, increasing the aperture ratio of the array substrate 100, and the synergistic effect of the subpixels of adjacent pixel units 11 increases the luminous efficiency of the subpixels and improves the luminous brightness, which can reduce the current density delivered to the pixel electrode, thereby reducing the risk of damage to the subpixels and improving the service life of the subpixels and the array substrate 100.

[0051] It should be noted that, in this embodiment, the right-angled trapezoidal structure formed by the first sub-pixel 111 and the second sub-pixel 112 can be exactly the same right-angled trapezoid or right-angled trapezoids of different shapes, and can be set according to the color ratio of the first sub-pixel 111 and the second sub-pixel 112 in a single pixel unit 11.

[0052] Please refer to Figure 6 In some embodiments of the array substrate 100 of this application, the pixel unit 11 is rectangular.

[0053] Understandably, the array of multiple pixel units 11 in the array substrate 100 is arranged in a rectangular structure, which facilitates the arrangement and setting of multiple pixel units 11, fully occupies the available area of ​​the array substrate 100, increases the aperture ratio, and makes the multiple pixel units 11 have the same structure and are arranged regularly.

[0054] It should be noted that in this embodiment, the sloping side of the right trapezoid may or may not be parallel to the diagonal of the rectangle; no specific limitation is made here.

[0055] Please refer to Figure 1 In any two rows and two columns of four adjacent pixel units 11, four adjacent first sub-pixels 111 are spliced ​​together to form a hexagon. The top and bottom sides of the hexagon are twice the top base of the first sub-pixel 111, and the four hypotenuses of the hexagon are equal to the hypotenuses of the first sub-pixel.

[0056] Alternatively, four adjacent second sub-pixels 112 are joined together to form a hexagon, the top and bottom sides of which are twice the length of the top base of the second sub-pixel 112, and the four hypotenuses of the hexagon are equal to the hypotenuses of the second sub-pixel.

[0057] Alternatively, four adjacent third sub-pixels 113 are joined together to form a rectangle, wherein the side lengths of the two adjacent sides of the rectangle are twice the top and bottom sides of the first sub-pixel 111 and the second sub-pixel 112, respectively.

[0058] The technical solution of this application makes the colors of adjacent sub-pixels in adjacent pixel units 11 in the array substrate 100 consistent, and makes each pixel unit 11 configured as a structure formed by splicing two right-angled trapezoidal sub-pixels and a rectangular sub-pixel, and makes the sloping sides between the two right-angled trapezoids parallel and equal, and the two sides of the third sub-pixel 113 are parallel and equal to the upper base of the two right-angled trapezoids respectively.

[0059] In this embodiment, when multiple pixel units 11 in the array substrate 100 are arranged in an array, four pixel units 11 arranged in two rows and two columns form a circular array 10. At this time, when the four first sub-pixels 111 are located in the middle of the circular array 10, the four first sub-pixels 111 are arranged in two rows and two columns to form a hexagon with the upper base and the sloping sides of a right trapezoid as its sides. The hexagon is defined to have two parallel and equal sides and four sloping sides located between the two sides. At this time, the four sloping sides are formed by the sloping sides of the four first sub-pixels 111, and the upper and lower sides are formed by splicing the upper base of two first sub-pixels, so that the side length of each of the upper and lower sides is twice the side length of the upper base of the first sub-pixel 111. At the same time, the four third sub-pixels 113 are spliced ​​in pairs to form a rectangle.

[0060] Similarly, when the four second sub-pixels 112 are located in the middle of the circular array 10, the four second sub-pixels 112 are arranged in two rows and two columns to form a hexagon with the upper base and the sloping sides of a right trapezoid as its sides. The hexagon is defined to have two parallel and equal sides and four sloping sides located between the two sides. At this time, the four sloping sides are formed by the sloping sides of the four second sub-pixels 112, and the upper and lower sides are formed by combining the upper bases of two second sub-pixels, so that the side length of the upper and lower sides is twice the side length of the upper base of the second sub-pixel 112; at the same time, the four third sub-pixels 113 are combined in pairs to form a rectangle.

[0061] Reference Figure 5 If the four third sub-pixels 113 are located in the middle of the circular array 10, the four third sub-pixels 113 are arranged in two rows and two columns to form a rectangular structure. One side of the rectangle is formed by combining the top bottom edges of two first sub-pixels 111, and the other side is formed by combining the top bottom edges of two second sub-pixels 112. Simultaneously, the four first sub-pixels 111 are joined in pairs to form isosceles trapezoids, and the four second sub-pixels 112 are joined in pairs to form isosceles trapezoids. It is easy to understand that, according to the arrangement structure of this embodiment, sub-pixels of the same color in four adjacent pixel units 11 can be joined to share the same mask opening 210. That is, the opening of the mask 200 can be made larger, thereby further reducing the manufacturing difficulty of the mask 200 required for the high-resolution display panel, reducing the manufacturing difficulty of the high-resolution display panel, and thus improving the resolution of the display panel.

[0062] Please refer to Figure 1 and Figure 3 In some embodiments of the array substrate 100 of this application, the first sub-pixel 111, the second sub-pixel 112 and the third sub-pixel 113 are respectively a blue sub-pixel, a red sub-pixel and a green sub-pixel;

[0063] Wherein, the area of ​​the first sub-pixel 111 is greater than or equal to that of the second sub-pixel 112, and the area of ​​the second sub-pixel 112 is greater than that of the third sub-pixel 113.

[0064] Understandably, in each pixel unit 11, each sub-pixel processes one color channel, corresponding to the three primary colors of red, green, and blue to form red sub-pixels, green sub-pixels, and blue sub-pixels respectively. In specific applications, depending on the different control voltages in each sub-pixel, each color sub-pixel has 256 shades of brightness. The combination of the three shades of brightness can improve the resolution of the display panel.

[0065] Furthermore, the first sub-pixel 111 is designated as a blue sub-pixel, the second sub-pixel 112 as a red sub-pixel, and the third sub-pixel 113 as a green sub-pixel. The area occupied by the green sub-pixel is defined to be smaller than the area occupied by the first sub-pixel 111 and the second sub-pixel 112. Understandably, the luminous efficiency of the green sub-pixel is much higher than that of the blue and red sub-pixels, while the luminous efficiency of the blue sub-pixel is the lowest. That is, under the same voltage, the brightness of the green sub-pixel is stronger than that of the blue and red sub-pixels. If the proportions of the three sub-pixels are equal, in order to make the sub-pixels with lower luminous efficiency more prominent than those with higher luminous efficiency... If the pixel brightness is consistent, it is necessary to increase the current input to the blue sub-pixel with low luminous efficiency, resulting in higher loss and shorter lifespan for the blue sub-pixel. In this embodiment, the luminous area of ​​the green sub-pixel is minimized, and the luminous area of ​​the blue sub-pixel is maximized or approximately the same as that of the red sub-pixel. Even if the current density input to the blue and red sub-pixels is reduced, the blue and red sub-pixels will still emit brighter light, reducing the loss of the blue and red sub-pixels and extending the lifespan of the red and blue sub-pixels with lower luminous efficiency, thereby improving the overall lifespan of the pixel unit 11.

[0066] At this time, when the four pixel units 11 are spliced ​​together to form a circular array 10, according to the different divisions of the circular array 10, the four blue sub-pixels or the four red sub-pixels can form a hexagonal structure, or the four green sub-pixels can form a rectangular structure.

[0067] Please refer to Figure 1 In some embodiments of the array substrate 100 of this application, the first sub-pixel 111 and the second sub-pixel 112 have the same area.

[0068] In this embodiment, the areas of the first sub-pixel 111 and the second sub-pixel 112 are made to be the same. This configuration ensures that the brightness of blue and red light in the pixel unit 11 is approximately the same, resulting in uniform color mixing and a better representation of the desired color. It should be noted that since the diagonal sides of the first sub-pixel 111 and the second sub-pixel 112 are parallel and equal, and their areas are the same, the areas of the first sub-pixel 111 and the second sub-pixel 112 can be made the same by adjusting the size of the acute angle of the right trapezoid, the length of the upper and lower bases, or, in the following embodiment, by making the pixel unit 11 approximately square, with its diagonal sides parallel to the square's diagonal, to facilitate the structural configuration of the pixel unit 11 and the sub-pixels.

[0069] Please refer to Figure 1 and Figure 4 In some embodiments of the array substrate 100 of this application, the pixel unit 11 is square, and the first sub-pixel 111 and the second sub-pixel 112 are symmetrically arranged along the diagonal of the pixel unit 11; the sloping waist length of the first sub-pixel 111 and the second sub-pixel 112 is 1 / 2 to 2 / 3 of the length of the diagonal.

[0070] In this embodiment, the pixel unit 11 is square, and the diagonal of the first sub-pixel 111 and the second sub-pixel 112 is parallel to the diagonal of the square. This arrangement ensures that the areas of the first sub-pixel 111 and the second sub-pixel 112 are the same, resulting in a simple structure and easy arrangement. Furthermore, the length of the diagonal of the first sub-pixel 111 and the second sub-pixel 112 is 1 / 2 to 2 / 3 of the length of the diagonal of the pixel unit 11. This ensures that the proportion of blue and red sub-pixels is greater than that of green sub-pixels. This achieves an optimal area ratio for blue, red, and green sub-pixels while improving the lifespan of the blue and red sub-pixels, thus ensuring more realistic color brightness during pixel unit color mixing and improving the display effect.

[0071] Please refer to Figure 6 In some embodiments of the array substrate 100 of this application, the sloping waist length of the first sub-pixel 111 and the second sub-pixel 112 is 1 / 2 of the length of the diagonal, the third sub-pixel 113 is square, and the side length of the third sub-pixel 113 is half the side length of the pixel unit 11.

[0072] In this embodiment, the diagonal length of the first sub-pixel 111 and the second sub-pixel 112 is half the diagonal of the pixel unit 11. At this time, when the pixel unit 11 is a square structure, the third sub-pixel 113 is also a square. At this time, the area occupied by the third sub-pixel 113 is smaller than the area occupied by the first sub-pixel 111 and the second sub-pixel 112. The area ratio of the first sub-pixel 111, the second sub-pixel 112 and the third sub-pixel 113 is approximately 3:3:2. At this time, reducing the area ratio of the green sub-pixel can make the pixel unit 11 mix colors evenly when injecting a consistent current into each sub-pixel, avoiding the problem of green light protrusion. In addition, increasing the area ratio of the blue and red sub-pixels can improve the lifespan of the blue and red sub-pixels and improve the overall lifespan.

[0073] Please refer to Figure 2 In some embodiments of the array substrate 100 of this application, the pixel unit 11 is square, the angle between the sloping side of the second sub-pixel 112 and the bottom edge of the second sub-pixel 112 is greater than or equal to 30 degrees and less than 45 degrees; the side length of the third sub-pixel 113 is 1 / 3 to 1 / 2 of the side length of the pixel unit 11.

[0074] Understandably, in pixel unit 11, the luminous efficiency of the green sub-pixel is greater than that of the red sub-pixel, and the luminous efficiency of the red sub-pixel is greater than that of the blue sub-pixel. If the proportions of the three sub-pixels are the same and the brightness of the three colors of sub-pixels is to be the same, then a higher density of current needs to be input to the pixel electrode of the sub-pixel with lower luminous efficiency. This will lead to increased loss and reduced lifespan of the sub-pixel with lower luminous efficiency. In this embodiment, based on the luminous efficiency of each sub-pixel, the area ratio of the sub-pixel in the pixel unit is approximately inversely proportional to its luminous efficiency. When the diagonal of the pixel unit is not the sloping side of a right trapezoid, the sloping sides of the first sub-pixel 111 and the second sub-pixel 112 are set at an angle to the diagonal of the pixel unit 11, and the acute angle of the second sub-pixel 112 is greater than or equal to 30 degrees and less than 45 degrees. At the same time, the side length of the third sub-pixel 113 is 1 / 3 to 1 / 2 of the side length of the pixel unit 11. With this setting, the blue sub-pixel has the largest area ratio in the pixel unit 11, and the green sub-pixel has the smallest area ratio in the pixel unit 11. This allows the sub-pixel with low luminous efficiency to emit brighter light without injecting a higher density of current into it, reducing the loss of the sub-pixel with low luminous efficiency, increasing the lifespan of the blue and red sub-pixels, and thus increasing the overall lifespan.

[0075] Please refer to Figure 2In some embodiments of the array substrate 100 of this application, the third sub-pixel 113 is rectangular, the long side of the third sub-pixel 113 is 1 / 2 the side length of the pixel unit 11, and the short side of the third sub-pixel 113 is 1 / 3 the side length of the pixel unit 11.

[0076] In this embodiment, the third sub-pixel 113 is rectangular, with its long side being half the side length of the square pixel unit 11 and its short side being one-third the side length of the pixel unit 11. This configuration allows the area ratio of the blue, red, and green sub-pixels to be 3:2:1. Based on the luminous efficiency of each sub-pixel, the area ratio of the blue, red, and green sub-pixels gradually decreases, and the ratio of each pixel is in an optimal proportion. This improves the lifespan of sub-pixels with low luminous efficiency while ensuring more realistic color brightness when the pixel unit 11 mixes colors, thus improving the display effect.

[0077] In some embodiments of the array substrate 100 of this application, the area ratio of the first sub-pixel 111, the second sub-pixel 112, and the third sub-pixel 113 is 5:3:2.

[0078] In this embodiment, the area ratio of the first sub-pixel 111, the second sub-pixel 112, and the third sub-pixel 113 is 5:3:2, which means that the area ratio of the blue sub-pixel, the red sub-pixel, and the green sub-pixel is in a better ratio. This improves the lifespan of sub-pixels with low luminous efficiency while ensuring that the color brightness is more realistic when the pixel unit 11 mixes colors, thus improving the display effect.

[0079] It should be noted that in this embodiment, the pixel unit 11 is rectangular. In this case, the sloping waist of the first sub-pixel 111 and the second sub-pixel 112 can be part of the diagonal of the pixel unit 11, or it can be set at an angle to the diagonal of the pixel unit 11. The position of the sloping waist, the size of the acute angle of the first sub-pixel 111, the size of the acute angle of the second sub-pixel 112, the length of the sloping waist, etc., can be adjusted according to the side length of each side of the pixel unit 11, so that the area ratio of the first sub-pixel 111, the second sub-pixel 112 and the third sub-pixel 113 satisfies 5:3:2. No specific limitation is made here.

[0080] Example 2:

[0081] This application also proposes a display panel, which includes an encapsulation layer and an array substrate 100, with the encapsulation layer disposed on one side of the array substrate 100. The array substrate 100 includes a substrate and pixel units 11, with a plurality of pixel units 11 arrayed on the substrate. Each pixel unit 11 includes a first sub-pixel 111, a second sub-pixel 112, and a third sub-pixel 113. The first sub-pixel 111 and the second sub-pixel 112 are two right-angled trapezoids with parallel and equal sloping sides. The third sub-pixel 113 is rectangular, and the two sides of the third sub-pixel 113 are parallel and equal in length to the top and bottom sides of the first sub-pixel 111 and the second sub-pixel 112, respectively. The colors of adjacent sub-pixels between any two adjacent pixel units 11 are the same. The encapsulation layer is disposed on the side of the pixel unit 11 facing away from the substrate.

[0082] The display panel proposed in this embodiment is mainly an OLED (Organic Light Emitting Diode) display panel, including an array substrate 100 and an encapsulation layer disposed on the light-emitting side of the array substrate 100. The array substrate 100 includes a substrate and a plurality of pixel units 11 arranged in an array on the array substrate 100. Each pixel unit 11 includes a first sub-pixel 111, a second sub-pixel 112, and a third sub-pixel 113. In each pixel unit 11, the first sub-pixel 111, the second sub-pixel 112, and the third sub-pixel 113 are all different colors. In the technical solution of this application, when the plurality of pixel units 11 are arranged in an array, the colors of the sub-pixels connected between four adjacent pixel units 11 are consistent, so that a pixel definition layer is not required between two adjacent pixel units 11, that is, the light-emitting area in the array substrate 100 is increased, thereby increasing the aperture ratio of the array substrate 100. In addition, by using the sub-pixels of adjacent pixel units 11 to increase the light emission brightness, the current density delivered to the pixel electrode can be reduced, thereby reducing the risk of damage to the sub-pixels and improving the service life of the array substrate 100 and the display panel.

[0083] Furthermore, when manufacturing this display panel, since the sub-pixels of the same color in multiple adjacent pixel units 11 are spliced ​​together, they can share a mask opening 210 during evaporation, which reduces the difficulty of manufacturing the mask plate 200 required for manufacturing a high-resolution display panel and reduces the manufacturing difficulty of the high-resolution display panel; since the manufacturing difficulty is reduced, a higher resolution display panel can be manufactured, thereby improving the resolution of the display panel.

[0084] Since the display panel proposed in this application applies all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought by all the foregoing technical solutions, which will not be elaborated here.

[0085] Example 3:

[0086] Please refer to Figures 7 to 9 This application also proposes a mask structure for fabricating an array substrate 100. The array substrate 100 includes a plurality of pixel units 11 arranged in an array. Each pixel unit 11 includes a substrate and a pixel unit 11. The plurality of pixel units 11 are arranged in an array on the substrate. Each pixel unit 11 includes a first sub-pixel 111, a second sub-pixel 112, and a third sub-pixel 113. The first sub-pixel 111 and the second sub-pixel 112 are two right angles that are parallel to each other and of equal length. The third sub-pixel 113 is trapezoidal and rectangular. The two sides of the third sub-pixel 113 are parallel to and of equal length to the top and bottom sides of the first sub-pixel 111 and the second sub-pixel 112, respectively. The sub-pixels connected between any two adjacent pixel units 11 have the same color. The mask structure includes at least one mask plate 200. The mask plate 200 has a mask opening 210. The shape of the mask opening 210 corresponds to the shape formed by splicing multiple sub-pixels of the same color connected on the array substrate 100.

[0087] In the fabrication of display panels, a three-stage vapor deposition process is typically required to form electroluminescent layers of corresponding colors in the light-emitting areas of the corresponding color pixel regions. This necessitates the use of three masks 200 for vapor deposition to prepare sub-pixels of three colors. Each mask 200 includes a masking area 220 and several mask openings 210. In the array substrate 100 of this application, the sub-pixels connected to adjacent pixel units 11 have the same color. Therefore, the shape of each mask opening 210 on the mask 200 corresponds to or is slightly larger than the shape of the assembled sub-pixels of the same color in the array substrate 100 to allow for processing allowance. This fabrication method, which allows multiple sub-pixels in adjacent pixel units 11 to share a single mask opening 210, reduces the molding difficulty of the mask 200 when fabricating a high-resolution array substrate 100. Furthermore, the mask 200 has higher structural strength, is less prone to deformation, and has a longer service life.

[0088] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An array substrate, comprising a substrate and pixel units, wherein a plurality of pixel units are arrayed on the substrate, the pixel units are square in shape, and each pixel unit includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, characterized in that, The first sub-pixel and the second sub-pixel are two right trapezoids with parallel and equal sloping sides. The third sub-pixel is rectangular, and its two sides are parallel and equal in length to the top base of the first sub-pixel and the second sub-pixel, respectively. The colors of adjacent sub-pixels between any two adjacent pixel units are the same. A circular array is formed by four pixel units arranged in two rows and two columns, and the four third sub-pixels are located in the middle of the circular array; The first sub-pixel, the second sub-pixel, and the third sub-pixel are respectively a blue sub-pixel, a red sub-pixel, and a green sub-pixel; Wherein, the area of ​​the first sub-pixel is greater than or equal to that of the second sub-pixel, and the area of ​​the second sub-pixel is greater than that of the third sub-pixel; The angle between the sloping waist of the second sub-pixel and the bottom edge of the second sub-pixel is greater than or equal to 30 degrees and less than 45 degrees; The long side of the third sub-pixel is half the side length of the pixel unit, and the short side of the third sub-pixel is one-third the side length of the pixel unit.

2. The array substrate as described in claim 1, characterized in that, In the four pixel units arranged in two rows and two columns, four adjacent first sub-pixels are spliced ​​together to form a hexagon. The top and bottom sides of the hexagon are twice the top base of the first sub-pixel, and the four hypotenuses of the hexagon are equal to the hypotenuses of the first sub-pixel. Alternatively, four adjacent second sub-pixels are joined to form a hexagon, the top and bottom sides of which are twice the length of the top base of the second sub-pixel, and the four hypotenuses of the hexagon are equal to the hypotenuses of the second sub-pixel. Alternatively, four adjacent third sub-pixels can be joined together to form a rectangle, wherein the side lengths of the two adjacent sides of the rectangle are twice the top and bottom sides of the first and second sub-pixels, respectively.

3. A display panel, characterized in that, The display panel includes an encapsulation layer and an array substrate as described in any one of claims 1 to 2, wherein the encapsulation layer is disposed on one side of the array substrate.

4. A mask structure for forming an array substrate as described in any one of claims 1 to 2, characterized in that, The mask structure includes at least one mask plate with a mask opening. The shape of the mask opening corresponds to the shape formed by splicing together multiple sub-pixels of the same color on the array substrate.

Images