Display panel, display device, mask assembly and manufacturing method

Abstract

The present application provides a display panel, device, mask assembly and manufacturing method, wherein the display panel includes a pixel unit, the pixel unit includes a first, second and third sub-pixels whose center lines are triangular, the centers of the first sub-pixels in the pixel units arranged along the first direction are on the same straight line, the centers of the second sub-pixels are on the same straight line and the centers of the third sub-pixels are on the same straight line, the second and third sub-pixels in the pixel units arranged along the second direction are arranged alternately and the centers of the second and third sub-pixels are on the same straight line, and the straight line passing through the center of the first sub-pixel in the first direction is located between the straight line passing through the center of the second sub-pixel in the first direction and the straight line passing through the center of the third sub-pixel in the first direction. In the present application, by setting the sub-pixels, the luminous center point of the pixel unit is on the same straight line in both the first direction and the second direction, so that the image quality can be uniform, the graininess can be reduced, and the display effect of the display panel is better.

Description

Technical Field

[0001] The present application relates to the field of display, and in particular to a display panel, a display device, a mask assembly and a method for manufacturing a display panel. Background Art

[0002] OLED display panels have been widely used in the display field due to their self-luminous, low power consumption, and rollability. The pursuit of improved image quality is also a matter that screen manufacturers are vying for. In related technologies, in order to improve the image quality of OLED products, sub-pixel rendering (SPR) technology is used for display. The technology can use the difference in the resolution of sub-pixels of different colors of the human eye to change the conventional red, green, and blue sub-pixels to simply define a pixel mode, and share certain sub-pixels of insensitive colors of certain positions between different pixels. With a relatively small number of sub-pixels, the same pixel resolution performance is simulated, thereby reducing the difficulty and cost of the production process. However, when displaying some detailed pictures by borrowing pixels, there is still unevenness or the features are not fully displayed. Summary of the invention

[0003] In view of this, the present application provides a display panel, a display device, a mask assembly and a method for manufacturing the display panel.

[0004] A display panel according to an embodiment of the present application includes pixel units arranged in an array, wherein the pixel units include a first sub-pixel, a second sub-pixel, and a third sub-pixel, wherein a line connecting the centers of the first sub-pixel, the second sub-pixel, and the third sub-pixel in the pixel units is in a triangle, wherein the centers of the first sub-pixels, the second sub-pixels, and the third sub-pixels in the pixel units arranged along a first direction are on the same straight line, and the centers of the second sub-pixels and the third sub-pixels in the pixel units arranged along a second direction are alternately arranged and the centers of the second sub-pixels and the third sub-pixels are on the same straight line;

[0005] A straight line passing through a center of the first sub-pixel along the first direction is located between a straight line passing through a center of the second sub-pixel along the first direction and a straight line passing through a center of the third sub-pixel along the first direction.

[0006] In some embodiments, the distance between a straight line passing through the center of the first sub-pixel along the first direction and a straight line passing through the center of the third sub-pixel along the first direction is less than or equal to the distance between a straight line passing through the center of the first sub-pixel along the first direction and a straight line passing through the center of the second sub-pixel along the first direction.

[0007] In some embodiments, the display panel includes a supporting column, and the supporting column is located between two adjacent second sub-pixels in the first direction and between two adjacent first sub-pixels in the second direction.

[0008] In some embodiments, a straight line passing through the center of the first sub-pixel along the second direction passes through the area where the supporting column is located.

[0009] In certain embodiments, the size of the support pillar is smaller than the process limit distance.

[0010] In some embodiments, the side of the first sub-pixel extending along the first direction is disposed opposite to the supporting column, and the side of the second sub-pixel extending along the second direction is disposed opposite to the supporting column.

[0011] In some embodiments, the support column is square.

[0012] In some embodiments, the first sub-pixel is hexagonal, the second sub-pixel is hexagonal, and the third sub-pixel is quadrilateral.

[0013] In some embodiments, a side of the second sub-pixel extending along the first direction is arranged opposite to a side of an adjacent third sub-pixel extending along the first direction.

[0014] In some embodiments, the first sub-pixel includes a first side opposite to the third sub-pixel, and the first side is parallel to a corresponding side of an adjacent third sub-pixel.

[0015] In some embodiments, the angle between the first side and the straight line where the first direction lies is greater than or equal to 0° and less than or equal to 45°.

[0016] In some embodiments, the third sub-pixel is square or trapezoidal.

[0017] In some embodiments, the first sub-pixel includes a second side opposite to the second sub-pixel, and an angle between the second side and a corresponding side of an adjacent second sub-pixel is less than 30°.

[0018] In some embodiments, the first sub-pixel includes a green sub-pixel, the second sub-pixel includes a blue sub-pixel, and the third sub-pixel includes a red sub-pixel.

[0019] In some embodiments, in the first direction, the first sub-pixel is designed to be axisymmetric, the second sub-pixel is designed to be axisymmetric, and the third sub-pixel is designed to be axisymmetric.

[0020] In some embodiments, two adjacent third sub-pixels in the first direction include two adjacent first sub-pixels arranged in the first direction, and the two first sub-pixels are symmetrically arranged relative to a perpendicular bisector of a line connecting centers of two adjacent third sub-pixels.

[0021] In some embodiments, the display panel includes two first sub-pixels symmetrically arranged relative to a line connecting the centers of the second sub-pixel and the third sub-pixel in the pixel unit, and the two first sub-pixels symmetrically arranged relative to a line connecting the centers of the second sub-pixel and the third sub-pixel in the pixel unit share the second sub-pixel and the third sub-pixel.

[0022] In some embodiments, the first sub-pixel is pentagonal, the second sub-pixel is hexagonal, and the third sub-pixel is quadrilateral.

[0023] The display device according to the embodiment of the present application includes the display panel according to any one of the above embodiments.

[0024] The mask assembly of the embodiment of the present application is used to manufacture the display panel of any one of the above embodiments, and the mask assembly includes:

[0025] A first mask plate, wherein the first mask plate comprises a first substrate and at least one first opening opened in the first substrate, wherein the first opening has the same shape as a light-emitting device layer forming the first sub-pixel in the display panel;

[0026] a second mask plate, wherein the second mask plate comprises a second substrate and at least one second opening opened in the second substrate, wherein the second opening has the same shape as a light-emitting device layer forming the second sub-pixel in the display panel;

[0027] A third mask plate, wherein the third mask plate comprises a third substrate and at least one third opening opened in the third substrate, wherein the third opening has the same shape as a light emitting device layer forming the third sub-pixel in the display panel.

[0028] In some embodiments, each of the pixel units includes two of the first sub-pixels, the two first sub-pixels of each pixel unit are respectively arranged opposite to adjacent pixel units in the first direction, and each of the first openings covers two of the first sub-pixels of the display panel that are adjacently arranged in the second direction.

[0029] The method for manufacturing a display panel according to an embodiment of the present application is used to manufacture the above-mentioned display panel, and the manufacturing method includes:

[0030] Using a first mask plate to form the first sub-pixel of the display panel by an evaporation process, the first mask plate comprising at least one first opening, the first opening having the same shape as a light-emitting device layer in the display panel that forms the first sub-pixel;

[0031] Using a second mask plate to form the second sub-pixel of the display panel by an evaporation process, the second mask plate includes at least one second opening, and the second opening has the same shape as the light-emitting device layer forming the second sub-pixel in the display panel;

[0032] The third sub-pixel of the display panel is formed by using a third mask plate through an evaporation process. The third mask plate includes at least one third opening. The third opening has the same shape as the light-emitting device layer forming the third sub-pixel in the display panel.

[0033] In the display panel, display device, mask assembly and display panel manufacturing method of the present application, the center line of the first sub-pixel, the second sub-pixel and the third sub-pixel in the pixel unit forms a triangle, and in the pixel unit arranged along the first direction, the center of the first sub-pixel is on the same straight line, the center of the second sub-pixel is on the same straight line, and the center of the third sub-pixel is on the same straight line, and in the pixel unit arranged along the second direction, the second sub-pixel and the third sub-pixel are alternately arranged and the center of the second sub-pixel and the center of the third sub-pixel are on the same straight line, so that each sub-pixel can be in the same row and column, and the rows and columns are equally spaced. Therefore, the luminous center point of the pixel unit synthesized by the first sub-pixel, the second sub-pixel and the third sub-pixel is on the same straight line in the first direction and the second direction. In this way, uniform picture quality is ensured, the granularity is reduced, and the display effect of the display panel is better.

[0034] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0036] Figure 1 is a schematic structural diagram of a display panel according to an embodiment of the present application;

[0037] Figure 2 is a schematic structural diagram of a display panel according to an embodiment of the present application;

[0038] Figure 3 is a schematic structural diagram of a display panel according to an embodiment of the present application;

[0039] Figure 4 is a schematic structural diagram of a display panel according to an embodiment of the present application;

[0040] Figure 5 is a schematic diagram of a pixel opening structure of a mask assembly according to an embodiment of the present application;

[0041] Figure 6 is a schematic structural diagram of a first mask plate in an embodiment of the present application;

[0042] Figure 7 is a schematic structural diagram of a second mask plate in an embodiment of the present application;

[0043] Figure 8 is a schematic structural diagram of a third mask plate according to an embodiment of the present application;

[0044] Figure 9-10 is a schematic diagram of a pixel opening structure of a mask assembly according to an embodiment of the present application;

[0045] Fig.11 It is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the present application.

[0046] Description of main component symbols:

[0047] Display panel 10, pixel unit 12, first sub-pixel 122, first side 1222, second side 1224, second sub-pixel 124, third sub-pixel 126, support column 14;

[0048] A first mask plate 20, a first substrate 22, a first opening 24, a second mask plate 30, a second substrate 32, a second opening 34, a third mask plate 40, a third substrate 42, and a third opening 44;

[0049] A first direction x, a second direction y; DETAILED DESCRIPTION

[0050] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0051] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0052] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0054] OLED displays are the mainstream display screens currently, and are popular among consumers. The pursuit of improved image quality is also a matter that screen manufacturers are vying for. High-resolution displays require a corresponding reduction in pixel size and pixel spacing, which places extremely high demands on the manufacturing process. How to improve resolution while reducing process difficulty has become a difficult problem to explore.

[0055] The current solution mainly uses sub-pixel rendering (SPR) technology, which can use the difference in the human eye's resolution of sub-pixels of different colors to change the conventional red, green, and blue sub-pixels that simply define a pixel mode. By sharing certain sub-pixels of color that are not sensitive to positional resolution between different pixels, a relatively small number of sub-pixels can be used to simulate the same pixel resolution performance, thereby reducing the difficulty and cost of the production process. However, when displaying some detailed pictures through borrowing pixels, there is still unevenness or the features cannot be fully displayed.

[0056] In view of this, please refer to Figure 1-4 The present application provides a display panel 10 , which includes pixel units 12 arranged in an array, and the pixel unit 12 includes a first sub-pixel 122 , a second sub-pixel 124 and a third sub-pixel 126 .

[0057] In the pixel unit 12, the center lines of the first sub-pixel 122, the second sub-pixel 124, and the third sub-pixel 126 are in a triangle shape, and in the pixel units 12 arranged along the first direction x, the centers P1 of the first sub-pixels 122, the centers P2 of the second sub-pixels 124, and the centers P3 of the third sub-pixels 126 are in the same straight line, and in the pixel units 12 arranged along the second direction y, the second sub-pixels 124 and the third sub-pixels 126 are alternately arranged and the centers P2 of the second sub-pixels 124 and the centers P3 of the third sub-pixels 126 are in the same straight line;

[0058] The straight line passing through the center P1 of the first sub-pixel 122 along the first direction x is located between the straight line passing through the center P2 of the second sub-pixel 124 along the first direction x and the straight line passing through the center P3 of the third sub-pixel 126 along the first direction x.

[0059] In the display panel 10 of the present application, the line connecting the centers P3 of the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 in the pixel unit 12 forms a triangle, and in the pixel unit 12 arranged along the first direction x, the centers P1 of the first sub-pixel 122, the centers P1 of the second sub-pixel 126 and the centers P3 of the third sub-pixel 126 are on the same straight line, and in the pixel unit 12 arranged along the second direction y, the second sub-pixel 124 and the third sub-pixel 126 are alternately arranged and the centers p2 of the second sub-pixel 124 and P3 of the third sub-pixel 126 are on the same straight line, so that each sub-pixel can be in the same row and column, and the rows and columns are equally spaced. Therefore, the light-emitting center point of the pixel unit synthesized by the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 are on the same straight line in both the first direction x and the second direction y. In this way, uniform image quality is ensured, the granularity is reduced, and the display effect of the display panel 10 is better.

[0060] Specifically, the display panel 10 may be an organic light-emitting diode (OLED) display panel 10. The display panel 10 uses an organic light-emitting diode for display, can realize autonomous light emission and can realize customized driving of pixel points, can realize display function without a backlight, and has the advantages of being light, thin, low energy consumption, high brightness, and good luminous efficiency.

[0061] It should be noted that the pixel unit 12 refers to the smallest repeating unit in the display panel 10 that can achieve the same luminous effect and function. The multiple pixel units 12 are arranged in an array, which means that the centers of the multiple pixel units 12 are staggered along at least the first direction x and the second direction y to form an array. In particular, the multiple pixel units 12 can be staggered along the first direction x and the second direction y that are perpendicular to each other and arranged in an array. At this time, the first direction x and the second direction y that are perpendicular to each other can be the row extension direction and the column extension direction of the pixel unit 12. The pixel units 12 arranged along the row extension direction form pixel rows, and the pixel units 12 arranged along the column extension direction form pixel columns. Among them, the rows and columns in which the pixel units 12 are arranged in the display panel 10 are relative.

[0062] In some embodiments, the center of a sub-pixel refers to the geometric center position of the sub-pixel. The first direction x may be a row direction, i.e., a row extension direction of the pixel unit 12, and the second direction y may be a column direction, i.e., a column extension direction of the pixel unit 12. In some embodiments, the first direction x may also be a column direction, i.e., a column extension direction of the pixel unit 12, and the second direction y may be a row direction, i.e., a row extension direction of the pixel unit 12.

[0063] The spacing between sub-pixels refers to the minimum distance between the edges of the sub-pixels that are close to each other, and this distance is less than the distance between the centers of the two sub-pixels. The spacing between two adjacent sub-pixels needs to be greater than or equal to the process limit distance. Sub-pixels are adjacent to each other when the line connecting the two sub-pixels with the minimum distance does not pass through other sub-pixels.

[0064] In the pixel unit 12, the spacing between the first sub-pixel 122 and the second sub-pixel 124 needs to be greater than or equal to the process limit distance, the spacing between the first sub-pixel 122 and the third sub-pixel 126 needs to be greater than or equal to the process limit distance, and the spacing between the first sub-pixel 122 and the third sub-pixel 126 needs to be greater than or equal to the process limit distance. In this way, the display panel 10 can minimize the spacing between the first sub-pixel 122, the second sub-pixel 124, and the third sub-pixel 126, so that under the condition of the same resolution, the pixel opening area can be increased between the first sub-pixel 122, the second sub-pixel 124, and the third sub-pixel 126, and the driving current of the display panel is reduced, thereby increasing the life of the display panel.

[0065] Please further combine Figure 2 Accordingly, in some embodiments, along the second direction y, the center P2 of the second sub-pixel 124 and the center P3 of the third sub-pixel 126 that are alternately arranged may be on the same straight line. The center P1 of the first sub-pixel 122 and the center P3 of the third sub-pixel 126 that are alternately arranged in the first direction x may not be on the same straight line.

[0066] It can be understood that the specific arrangement of the second sub-pixel 124 and the third sub-pixel 126 can be determined according to the size and arrangement of the pixel unit 12 and the size and position of the second sub-pixel 124 and the third sub-pixel 126, and is not specifically limited here.

[0067] In some embodiments, the luminous color of the first sub-pixel 122 is different from the luminous color of the second sub-pixel 124 and the luminous color of the third sub-pixel 126. For example, in this embodiment, the first sub-pixel 122 is a green sub-pixel, the second sub-pixel 124 is a blue sub-pixel, and the third sub-pixel 126 is a red sub-pixel.

[0068] Among them, the light-emitting area of ​​the second sub-pixel 124 is larger than that of the first sub-pixel 122, and the light-emitting area of ​​the first sub-pixel 122 is larger than that of the third sub-pixel 126. That is, the light-emitting area of ​​the blue sub-pixel is larger than that of the green sub-pixel, and the light-emitting area of ​​the green sub-pixel is larger than that of the red sub-pixel. The specific ratio of the light-emitting areas of the first sub-pixel 122, the second sub-pixel 124, and the third sub-pixel 126 is not limited and can be set according to actual conditions.

[0069] It is understandable that for an organic light emitting diode display device, since the blue light emitting material generally has the lowest light emitting efficiency and a relatively short lifespan compared to red and green, the blue sub-pixel area can be larger than the red sub-pixel or the green sub-pixel area. In addition, since the human eye is more sensitive to red and the red light emitting material has the highest efficiency, the red sub-pixel area can be minimized.

[0070] The specific ratio of the light-emitting areas of the first sub-pixel 122, the second sub-pixel 124, and the third sub-pixel 126 is not limited and can be set according to actual conditions. For example, the light-emitting areas of the first sub-pixel 122, the second sub-pixel 124, and the third sub-pixel 126 can be 5:4:2, 5:4:3, or 6:5:2, etc.

[0071] Of course, in other embodiments, the correspondence between the luminous colors of the first sub-pixel 122, the second sub-pixel 124, and the third sub-pixel 126 may not be limited to the embodiments discussed above, but may be changed according to actual needs, and is not specifically limited here.

[0072] In some embodiments, along the first direction, the size of the first sub-pixel 122 is smaller than the size of the second sub-pixel 124 , and the size of the first sub-pixel 124 is greater than or equal to the size of the third sub-pixel 126 .

[0073] In some embodiments, along the second direction, the size of the first sub-pixel 122 is larger than the size of the second sub-pixel 124 , and the size of the second sub-pixel 124 is larger than or equal to the size of the third sub-pixel 126 .

[0074] In some embodiments, the distance between a straight line passing through the center of the first sub-pixel 122 along the first direction x and a straight line passing through the center of the third sub-pixel 126 along the first direction x is less than or equal to the distance between a straight line passing through the center of the first sub-pixel 122 along the first direction x and a straight line passing through the center of the second sub-pixel 124 along the first direction x.

[0075] In some embodiments, the display panel 10 includes a support column 14 , and the support column 14 is located between two adjacent second sub-pixels 124 in the first direction x and between two adjacent first sub-pixels 122 in the second direction y.

[0076] Specifically, the support columns 14 include a plurality of support columns 14, and the centers of the plurality of support columns 14 are staggered along at least the first direction x and the second direction y to form an array. Each support column 14 is located between four adjacent pixel units 12, and each support column 14 is located between two adjacent second sub-pixels 124 in the first direction x and between two adjacent first sub-pixels 122 in the second direction y.

[0077] In some embodiments, a straight line passing through the center of the first sub-pixel 122 along the second direction y passes through the region where the support column 14 is located. Specifically, in the second direction y, the first sub-pixels 122 and the support columns 14 are arranged alternately, and a straight line connecting the center of the first sub-pixel 122 and the center of the support column 14 in the second direction y is parallel to the second direction y.

[0078] In some embodiments, there is at least one straight line along the first direction x that passes through both the support pillar 14 and the second sub-pixel 124 .

[0079] The support column 14 can be a spacer particle (Photo Spacer, PS), and the support column 14 can be formed on a substrate (Baeplate, BP), so that there is no overlapping position of the opening after the fine metal mask (FMM) overlaps, thereby preventing the FMM from scratching the support column 14.

[0080] In some embodiments, the size of the support column 14 is smaller than the process limit distance, so that the entire arrangement aperture ratio of the display panel 10 is less wasted.

[0081] In some embodiments, the side of the first sub-pixel 122 extending along the first direction x is disposed opposite to the support column 14 , and the side of the second sub-pixel 124 extending along the second direction y is disposed opposite to the support column 14 .

[0082] Specifically, the support column 14 is square or circular. For example, the support column 14 can be rectangular or square. In the present embodiment, the support column 14 can be square, that is, the length and width of the support column 14 are equal. The length and width of the support column 14 can range from 5 to 40 microns. For example, the width of the support column 14 can be, but is not limited to, 5 microns, 6 microns, 8 microns, 10 microns, 15 microns, 20 microns, 25 microns, 30 microns, 35 microns, or 40 microns.

[0083] The first sub-pixel 122 is arranged parallel to the side opposite to the support column 14, and the second sub-pixel 124 is arranged parallel to the side opposite to the support column 14. In addition, the spacing between the side opposite to the first sub-pixel 122 and the support column 14 and the spacing between the side opposite to the second sub-pixel 124 and the support column 14 may be equal.

[0084] In this way, the display panel 10 can minimize the spacing between the first sub-pixel 122, the second sub-pixel 124 and the support column 14, so that under the condition of the same resolution, the pixel opening area of ​​the first sub-pixel 122 and the second sub-pixel 124 can be increased, thereby reducing the driving current of the display panel 10 and increasing the life of the display panel 10.

[0085] Please combine Figure 2 In some embodiments, the distance between the center of the support column 14 and the center of the first sub-pixel 122 is greater than or equal to the distance between the center of the support column 14 and the center of the second sub-pixel 124, and the distance between the center of the support column 14 and the center of the second sub-pixel 124 is greater than the distance between the center of the support column 14 and the center of the third sub-pixel 126.

[0086] In some embodiments, along the first direction x, the center of the support column 14 and the center of the second sub-pixel 124 are not located on the same straight line.

[0087] In some embodiments, the distance between a straight line passing through the center of the support column 14 along the first direction x and a straight line passing through the center of the first sub-pixel 122 along the first direction x is smaller than the distance between a straight line passing through the center of the support column 14 along the first direction x and a straight line passing through the center of the third sub-pixel 126 along the first direction x.

[0088] Please combine Figure 1 and 3 In some embodiments, the first sub-pixel 122 is hexagonal, the second sub-pixel 124 is hexagonal, and the third sub-pixel 126 is quadrilateral.

[0089] In each pixel unit 12 in the display panel 10, two opposite sides of the first sub-pixel 122 among the six sides are respectively adjacent to a second sub-pixel 124 and a third sub-pixel 126 of an adjacent pixel unit 12, and the other four sides of the first sub-pixel 122 are respectively adjacent to two third sub-pixels 126 and two support pillars 14. Similarly, two opposite sides of the second sub-pixel 124 among the six sides are respectively adjacent to a first sub-pixel 122 and a first sub-pixel 122 in another adjacent pixel unit 12, and the other four sides of the second sub-pixel 124 are respectively adjacent to two third sub-pixels 126 and two support pillars 14. The third sub-pixel 126 is respectively adjacent to two first sub-pixels 122 at one set of opposite sides, and the third sub-pixel 126 is respectively adjacent to two second sub-pixels 124 at another set of opposite sides.

[0090] It should be noted that in Figure 1 and Figure 3 In the embodiment, a Real RGB pixel structure is adopted. That is, each pixel unit 12 includes a first sub-pixel 122 , a second sub-pixel 124 and a third sub-pixel 126 .

[0091] It can be understood that in the related art, the Real RGB pixel structure includes the Real SRGB pixel arrangement and the RealDelta RGB pixel arrangement, wherein. In the Real SRGB pixel arrangement, the monochrome pixels are in the same row and column, and the rows and columns are equally spaced, so that the display effect is better, but the pixel aperture ratio is low, resulting in a low life span, which does not meet the use requirements. The Real DeltaRGB pixel arrangement has the characteristics of a high pixel aperture ratio, but the display effect is not good. The pixel arrangement in the Real RGB pixel structure proposed in the present application, by making the sub-pixels in the same row and column, so that the luminous center of the pixel unit 12 formed by the sub-pixels is arranged in the same row and column, can achieve the display effect of the display panel 10 as the Real SRGB pixel arrangement is better, and at the same time, the hexagonal arrangement of the first sub-pixel 122 and the second sub-pixel 124 can improve the pixel aperture ratio of the sub-pixel, thereby extending the service life of the pixel unit 12, and can both improve the resolution of the display panel 10 and reduce the process difficulty.

[0092] In some embodiments, the first sub-pixel 122 , the second sub-pixel 124 , and the third sub-pixel 126 each include sides parallel to the first direction.

[0093] In some embodiments, the first sub-pixel 122 , the second sub-pixel 124 , and the third sub-pixel 126 each include sides parallel to the first direction and the second direction.

[0094] In some embodiments, the first sub-pixel 122 and the third sub-pixel 126 include sides that are located on the same straight line.

[0095] Please combine Figure 4 In some embodiments, the first sub-pixel 122 is pentagonal, the second sub-pixel 124 is hexagonal, and the third sub-pixel 126 is quadrilateral.

[0096] In the display panel 10, the first sub-pixel 122 is adjacent to a second sub-pixel 124 on one of the five sides, and the other four sides of the first sub-pixel 122 are adjacent to two third sub-pixels 126 and two support pillars 14. Similarly, the second sub-pixel 124 is adjacent to two first sub-pixels 122 on two opposite sides of the six sides, and the other four sides of the second sub-pixel 124 are adjacent to two third sub-pixels 126 and two support pillars 14. The third sub-pixel 126 is adjacent to two first sub-pixels 122 on one set of opposite sides, and is adjacent to two second sub-pixels 124 on another set of opposite sides.

[0097] It should be noted that, in this embodiment, an SPR pixel structure arrangement is adopted, that is, in the first direction x, every two first sub-pixels share a second sub-pixel and a third sub-pixel to form two pixel units.

[0098] It can be understood that the SPR pixel structure arrangement proposed in the present application can both improve the resolution of the display panel 10 and reduce the process difficulty. Moreover, compared with the existing SPR pixel arrangement, it can improve the display effect of the display panel 10.

[0099] Of course, in other embodiments, the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 are not limited to the shapes discussed above, but may be selected from one or more of quadrilaterals, hexagons and octagons according to actual needs, and are not specifically limited here.

[0100] In some embodiments, the first sub-pixel 122, the second sub-pixel 124, and the third sub-pixel 126 each include at least one right angle, and the first sub-pixel 122 and the second sub-pixel 124 each include at least one obtuse angle. Figure 1 In some examples, the first sub-pixel 122 and the second sub-pixel 124 each include three right angles, and the first sub-pixel 122 and the second sub-pixel 124 can be obtained by removing two right angles from a rectangle, and in one pixel unit 12, the removed right angles of the first sub-pixel 122 and the second sub-pixel 126 include relative right angles.

[0101] In some embodiments, the first sub-pixel 122, the second sub-pixel 124, and the third sub-pixel 126 include at least one obtuse angle. Figure 3 , the first sub-pixel 122 includes six obtuse angles, the second sub-pixel 124 includes four obtuse angles, and the third sub-pixel 126 includes two obtuse angles, wherein the first sub-pixel 122 and the third sub-pixel 126 can be obtained by removing four right angles from a rectangle, and the second sub-pixel 124 can be obtained by removing two adjacent right angles from a rectangle. For another example, please combine Figure 4 The first sub-pixel 122 includes three obtuse angles, the second sub-pixel 124 includes four obtuse angles, and the third sub-pixel 126 includes two obtuse angles, wherein the first sub-pixel 122 and the second sub-pixel 124 can be obtained by removing two right angles from a rectangle, and the third sub-pixel 124 can be obtained by removing four adjacent right angles from a rectangle.

[0102] In some embodiments, each corner of the first sub-pixel 122 , the second sub-pixel 124 , and the third sub-pixel 126 may be rounded.

[0103] In some embodiments, a side of the second sub-pixel 124 extending along the first direction x is disposed opposite to a side of the adjacent third sub-pixel 126 extending along the first direction x.

[0104] Among them, the second sub-pixel 124 is arranged parallel to the edge of the adjacent third sub-pixel 126, and the spacing needs to be greater than or equal to the process limit distance to meet the process requirements. Similarly, under the condition of the same resolution, the second sub-pixel 124 and the third sub-pixel 126 can increase the pixel opening area, reduce the driving current of the display device, and thereby increase the life of the display device.

[0105] In some embodiments, the first sub-pixel 122 includes a first side 1222 opposite to the third sub-pixel 126 , and the first side 1222 is disposed parallel to a corresponding side of an adjacent third sub-pixel 126 .

[0106] The distance between the first side edge 1222 and the side of the third sub-pixel 126 that are arranged opposite to each other needs to be greater than or equal to the process limit distance to meet the process requirements.

[0107] In some embodiments, the angle between the first side 1222 and the straight line where the first direction x is located is greater than or equal to 0° and less than or equal to 45°. For example, the angle between the first side 1222 and the straight line where the first direction x is located can be, but is not limited to, 30°, 35°, 40°, or 45°.

[0108] In some embodiments, the third sub-pixel 126 is square or trapezoidal. Figure 1 In some examples, the third sub-pixel 126 is square. For example, please combine Figure 3 or Figure 4 In some examples, the third sub-pixel 126 is in a trapezoidal shape, and the third sub-pixel 126 is an isosceles trapezoid.

[0109] In some embodiments, the first sub-pixel 122 includes a second side 1224 opposite to the second sub-pixel 124 , and an angle between the second side 1224 and a corresponding side of an adjacent second sub-pixel 124 is less than 30 degrees.

[0110] The distance between the second side edge 1224 and the side opposite to the second sub-pixel 124 needs to be greater than or equal to the process limit distance to meet the process requirements.

[0111] For example, in some examples, the first sub-pixel 122 includes a second side 1224 opposite to the second sub-pixel 124 , and the second side 1224 is arranged parallel to a corresponding side of an adjacent second sub-pixel 124 .

[0112] In some embodiments, in the second direction y, the first sub-pixel 122 is axisymmetrically designed.

[0113] Specifically, the first sub-pixel 122 may be symmetrically arranged with respect to a straight line that is parallel to the second direction y and passes through the center P1 of the first sub-pixel 122 .

[0114] In some embodiments, in the second direction y, the second sub-pixel 124 is axisymmetrically designed.

[0115] Specifically, the second sub-pixel 124 may be symmetrically arranged with respect to a straight line which is parallel to the second direction y and passes through the center P2 of the second sub-pixel 124 .

[0116] In some embodiments, the third sub-pixel 126 is axisymmetrically designed in the second direction y.

[0117] Specifically, the third sub-pixel 126 may be symmetrically arranged with respect to a straight line which is parallel to the second direction y and passes through the center P3 of the third sub-pixel 126 .

[0118] Of course, the symmetry axes of the first sub-pixel 122 , the second sub-pixel 124 , and the third sub-pixel 126 may not be limited to the above-discussed implementations, but may be changed according to actual conditions, and are not specifically limited here.

[0119] Please further combine Figure 3 In some embodiments, between two adjacent third sub-pixels 126 in the first direction x are two first sub-pixels 122 adjacently arranged in the first direction x, and the two first sub-pixels 122 are symmetrically arranged relative to a perpendicular bisector of a line connecting the centers of the two adjacent third sub-pixels 126 .

[0120] In this embodiment, a Real RGB pixel structure is adopted, that is, in each pixel unit 12, the number of sub-pixels is the same, and is one. In addition, the first sub-pixel 122 and the second sub-pixel 124 are both hexagonal, and the third sub-pixel 126 is trapezoidal.

[0121] Please combine Figure 4 In some embodiments, the display panel 10 includes two first sub-pixels 122 symmetrically arranged relative to a center line connecting the second sub-pixel 124 and the third sub-pixel 126 in the pixel unit 12, and the two first sub-pixels 122 symmetrically arranged relative to a center line connecting the second sub-pixel 124 and the third sub-pixel 126 in the pixel unit 12 share the second sub-pixel 124 and the third sub-pixel 126.

[0122] It should be noted that, in this embodiment, the first sub-pixel 122 is a pentagon, the second sub-pixel 124 is a hexagon, and the third sub-pixel 126 is a trapezoid.

[0123] At this time, for the pixel units 12 that are not located at the starting and ending positions of the first direction x, adjacent pixel units 12 can share the second sub-pixel 124 and the third sub-pixel 126, so that the sub-pixels can achieve a high-resolution display effect from a low-resolution physical resolution through the principle of borrowing colors.

[0124] The present application also provides a display device, which includes the display panel 10 of any one of the above embodiments.

[0125] In the display device of the present application, the line connecting the centers P3 of the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 in the pixel unit 12 forms a triangle, and in the pixel unit 12 arranged along the first direction x, the centers P1 of the first sub-pixel 122, the centers P1 of the second sub-pixel 126 and the centers P3 of the third sub-pixel 126 are on the same straight line, and in the pixel unit 12 arranged along the second direction y, the second sub-pixel 124 and the third sub-pixel 126 are alternately arranged and the centers p2 of the second sub-pixel 124 and P3 of the third sub-pixel 126 are on the same straight line, so that each sub-pixel can be in the same row and column, and the rows and columns are equally spaced. Therefore, the light-emitting center point of the pixel unit synthesized by the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 is on the same straight line in both the first direction x and the second direction y. In this way, uniform image quality is ensured, the granularity is reduced, and the display effect of the display panel 10 is better.

[0126] Exemplarily, the display device can be any of various types of computer system devices that are mobile or portable and perform wireless communication. Specifically, the display device can be a mobile phone or smart phone (e.g., a phone based on iPhoneTM, a phone based on AndroidTM), a portable game device (e.g., Nintendo DSTM, PlayStationPortableTM, Gameboy AdvanceTM, iPhoneTM), a tablet computer, a portable Internet device, a data storage device, etc. The display device 100 can also be other wearable devices (e.g., a smart bracelet, a smart watch, AR glasses, VR glasses, etc.).

[0127] In some cases, the display device can perform multiple functions (e.g., play music, display video, store pictures, and receive and send phone calls). If desired, the display device can be a portable device such as a cellular phone, a media player, other handheld device, a wristwatch device, a handset device, or other compact portable device.

[0128] Please combine Figure 5-9The present application also provides a mask assembly for manufacturing the display panel 10 of any of the above-mentioned embodiments, and the mask assembly includes a first mask plate 20, a second mask plate 30, and a third mask plate 40. Among them, the first mask plate 20 includes a first substrate 22 and at least a first opening 24 opened in the first substrate 22, and the first opening 24 has the same shape as the light-emitting device layer of the first sub-pixel 122 formed in the display panel 10, the second mask plate 30 includes a second substrate 32 and at least a second opening 34 opened in the second substrate 32, and the second opening 34 has the same shape as the light-emitting device layer of the second sub-pixel 124 formed in the display panel 10, and the third mask plate 40 includes a third substrate 42 and at least a third opening 44 opened in the third substrate 42, and the third opening 44 has the same shape as the light-emitting device layer of the third sub-pixel 126 formed in the display panel 10.

[0129] The mask assembly of the present application can be manufactured to form a display panel 10, in which the center P3 of the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 in the pixel unit 12 is connected to form a triangle, and in the pixel unit 12 arranged along the first direction x, the center P1 of the first sub-pixel 122 is on the same straight line, the center P1 of the second sub-pixel 126 is on the same straight line, and the center P3 of the third sub-pixel 126 is on the same straight line. In the pixel unit 12 arranged along the second direction y, the second sub-pixel 124 and the third sub-pixel 126 are alternately arranged and the center p2 of the second sub-pixel 124 and the center P3 of the third sub-pixel 126 are on the same straight line, so that each sub-pixel can be in the same row and column, and the rows and columns are equally spaced. Therefore, the light-emitting center point of the pixel unit synthesized by the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 is on the same straight line in the first direction x and the second direction y. In this way, uniform image quality is ensured, the granularity is reduced, and the display effect of the display panel 10 is better.

[0130] The light-emitting device layer of the adjacently formed first sub-pixel 122, the light-emitting device layer of the second sub-pixel 124, and the light-emitting device layer of the third sub-pixel 126 are connected to each other, and the edges of the light-emitting device layer of the first sub-pixel 122, the light-emitting device layer of the second sub-pixel 124, and the light-emitting device layer of the third sub-pixel 126 overlap.

[0131] The first opening 24 and the second opening 34 are hexagonal, and the third opening 44 is a quadrilateral. Figure 5 , the first opening is 24, the second opening 34 is a hexagon, and the third opening 44 is a square. For another example, please combine Fig. 9 and Fig.10 The first opening 24 and the second opening 34 are hexagonal, and the third opening 44 is an isosceles trapezoid.

[0132] Furthermore, please combine Figure 5-7 , in the second direction y, the spacing distance a between two adjacent first openings 24 is greater than or equal to the process distance. In the first direction x, the spacing distance b between two adjacent second openings 24 is greater than or equal to the process distance. It can be understood that since the first sub-pixel 122 is located in the first opening 24, the second sub-pixel 124 is located in the second opening 34, and the support column 14 is located between the first sub-pixels 122 in the second direction y, and between the second sub-pixels 124 in the first direction x. In addition, the support column 14 is smaller than the process limit distance, so that the entire arrangement aperture ratio is less wasted, the pixel aperture ratio of the sub-pixels is improved, and the service life of the display panel 10 is increased.

[0133] Please combine Fig.10 In some embodiments, two first sub-pixels 122 adjacent to each other in the first direction are included between two third sub-pixels 126 adjacent to each other in the first direction, and each first opening 24 covers two first sub-pixels 122 adjacent to each other in the first direction of the display panel 10 .

[0134] In the present application, the FMM openings for evaporation of adjacent first sub-pixels 126 are manufactured in a 2-in-1 manner, that is, each FMM pixel opening corresponds to two adjacent first sub-pixels 122 , thereby improving product yield.

[0135] In some embodiments, the first substrate 22 , the second substrate 32 , and the third substrate 42 are made of metal.

[0136] Thus, the first mask plate 20 , the second mask plate 30 and the third mask plate 40 may be high-precision metal mask plates, which may be applied to the evaporation process to form the corresponding display panel 10 by evaporating the organic light-emitting material corresponding to the pixel pattern.

[0137] In some embodiments, the mask assembly further includes a cover mask, a howling mask, and an align mask. The first mask plate 20, the second mask plate 30, and the third mask plate 40 can be combined with the cover mask, the howling mask, and the align mask to form a mask frame assembly (MFA).

[0138] In this way, the assembled mask integrated frame can be placed in the corresponding evaporation chamber to evaporate the organic light-emitting material corresponding to the sub-pixel. Specifically, each evaporation can form a sub-pixel pattern, and after forming a sub-pixel pattern, another sub-pixel pattern is formed. After the three sub-pixel patterns are formed, the display panel 10 of the embodiment of the present application is obtained.

[0139] Of course, in other embodiments, the display panel 10 is not limited to being formed by an evaporation process, but can be formed by a photolithography process, an etching process, etc. as needed.

[0140] Please combine Fig.11 The present application also provides a method for manufacturing a display panel 10, which is used to manufacture the display panel 10 of the above embodiment. The manufacturing method includes:

[0141] 01. Using a first mask plate and an evaporation process to form a first sub-pixel of a display panel, the first mask plate includes at least one first opening, and the first opening has the same shape as the light-emitting device layer forming the first sub-pixel in the display panel;

[0142] 02. Using a second mask plate to form a second sub-pixel of the display panel by an evaporation process, the second mask plate includes at least one second opening, and the second opening has the same shape as the light-emitting device layer forming the second sub-pixel in the display panel;

[0143] 03. A third sub-pixel of the display panel is formed by using a third mask plate through an evaporation process. The third mask plate includes at least one third opening. The third opening has the same shape as the light-emitting device layer forming the third sub-pixel in the display panel.

[0144] In the manufacturing method of the embodiment of the present application, the line connecting the centers P3 of the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 in the pixel unit 12 forms a triangle, and in the pixel unit 12 arranged along the first direction x, the centers P1 of the first sub-pixel 122, the centers P1 of the second sub-pixel 126 and the centers P3 of the third sub-pixel 126 are on the same straight line, and in the pixel unit 12 arranged along the second direction y, the second sub-pixel 124 and the third sub-pixel 126 are alternately arranged and the centers p2 of the second sub-pixel 124 and the centers P3 of the third sub-pixel 126 are on the same straight line, so that each sub-pixel can be in the same row and column, and the rows and columns are equally spaced. Therefore, the light-emitting center point of the pixel unit synthesized by the first sub-pixel 122, the second sub-pixel 124 and the third sub-pixel 126 is on the same straight line in both the first direction x and the second direction y. In this way, uniform image quality is ensured, the granularity is reduced, and the display effect of the display panel 10 is better.

[0145] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0146] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A display panel, characterized in that: The invention comprises pixel units arranged in an array, wherein the pixel units comprise a first sub-pixel, a second sub-pixel and a third sub-pixel, wherein a center line connecting the first sub-pixel, the second sub-pixel and the third sub-pixel in the pixel units is a triangle, wherein the centers of the first sub-pixels, the second sub-pixels and the third sub-pixels in the pixel units arranged along a first direction are on the same straight line, and the centers of the second sub-pixels and the third sub-pixels in the pixel units arranged along a second direction are alternately arranged and the centers of the second sub-pixels and the third sub-pixels are on the same straight line; A straight line passing through the center of the first sub-pixel along the first direction is located between a straight line passing through the center of the second sub-pixel along the first direction and a straight line passing through the center of the third sub-pixel along the first direction; The display panel includes a supporting column, which is located between two adjacent second sub-pixels in the first direction and between two adjacent first sub-pixels in the second direction. A straight line passing through the center of the first sub-pixel along the second direction passes through the area where the supporting column is located, and a size of the supporting column is smaller than the process limit distance.

2. The display panel according to claim 1, characterized in that: A distance between a straight line passing through a center of the first sub-pixel along the first direction and a straight line passing through a center of the third sub-pixel along the first direction is less than or equal to a distance between a straight line passing through a center of the first sub-pixel along the first direction and a straight line passing through a center of the second sub-pixel along the first direction.

3. The display panel according to claim 1, characterized in that: The side of the first sub-pixel extending along the first direction is arranged opposite to the supporting column, and the side of the second sub-pixel extending along the second direction is arranged opposite to the supporting column.

4. The display panel according to claim 1, characterized in that: The supporting column is square.

5. The display panel according to claim 1, characterized in that: The first sub-pixel is hexagonal, the second sub-pixel is hexagonal, and the third sub-pixel is quadrilateral.

6. The display panel according to claim 5, characterized in that: The side of the second sub-pixel extending along the first direction is arranged opposite to the side of the adjacent third sub-pixel extending along the first direction.

7. The display panel according to claim 5, characterized in that: The first sub-pixel includes a first side opposite to the third sub-pixel, and the first side is parallel to a corresponding side of an adjacent third sub-pixel.

8. The display panel according to claim 7, characterized in that: The angle between the first side and the straight line where the first direction lies is greater than or equal to 0° and less than or equal to 45°.

9. The display panel according to claim 8, characterized in that: The third sub-pixel is in a square or trapezoidal shape.

10. The display panel according to claim 5, characterized in that: The first sub-pixel includes a second side opposite to the second sub-pixel, and an angle between the second side and a corresponding side of an adjacent second sub-pixel is less than 30 degrees.

11. The display panel according to claim 1, characterized in that: The first sub-pixel includes a green sub-pixel, the second sub-pixel includes a blue sub-pixel, and the third sub-pixel includes a red sub-pixel.

12. The display panel according to claim 1, characterized in that: In the second direction, the first sub-pixel is designed to be axisymmetric, the second sub-pixel is designed to be axisymmetric, and the third sub-pixel is designed to be axisymmetric.

13. The display panel according to claim 1, characterized in that: Two adjacent third sub-pixels in the first direction include two adjacent first sub-pixels arranged in the first direction, and the two first sub-pixels are symmetrically arranged relative to a perpendicular bisector of a line connecting the centers of the two adjacent third sub-pixels.

14. The display panel according to claim 13, characterized in that: The display panel includes two first sub-pixels symmetrically arranged relative to a center line connecting the second sub-pixel and the third sub-pixel in the pixel unit, and the two first sub-pixels symmetrically arranged relative to a center line connecting the second sub-pixel and the third sub-pixel in the pixel unit share the second sub-pixel and the third sub-pixel.

15. The display panel according to claim 14, characterized in that: The first sub-pixel is in a pentagonal shape, the second sub-pixel is in a hexagonal shape, and the third sub-pixel is in a quadrilateral shape.

16. A display device, characterized in that: A display panel comprising any one of claims 1-15.

17. A mask assembly for manufacturing the display panel according to any one of claims 1 to 15, characterized in that: The mask assembly comprises: A first mask plate, wherein the first mask plate comprises a first substrate and at least one first opening opened in the first substrate, wherein the first opening has the same shape as a light-emitting device layer forming the first sub-pixel in the display panel; a second mask plate, wherein the second mask plate comprises a second substrate and at least one second opening opened in the second substrate, wherein the second opening has the same shape as a light-emitting device layer forming the second sub-pixel in the display panel; A third mask plate, wherein the third mask plate comprises a third substrate and at least one third opening opened in the third substrate, wherein the third opening has the same shape as a light emitting device layer forming the third sub-pixel in the display panel.

18. The mask assembly according to claim 17, characterized in that: Two adjacent third sub-pixels in the first direction include two adjacent first sub-pixels arranged in the first direction, and each first opening covers two adjacent first sub-pixels of the display panel arranged in the first direction.

19. A method for manufacturing a display panel, used for manufacturing the display panel according to any one of claims 1 to 15, characterized in that: The production method comprises: Using a first mask plate to form the first sub-pixel of the display panel by an evaporation process, the first mask plate comprising at least one first opening, the first opening having the same shape as a light-emitting device layer in the display panel that forms the first sub-pixel; Using a second mask plate to form the second sub-pixel of the display panel by an evaporation process, the second mask plate includes at least one second opening, and the second opening has the same shape as the light-emitting device layer forming the second sub-pixel in the display panel; The third sub-pixel of the display panel is formed by using a third mask plate through an evaporation process. The third mask plate includes at least one third opening. The third opening has the same shape as the light-emitting device layer forming the third sub-pixel in the display panel.

Images