Display panel, mask plate assembly and display device

Abstract

The present invention provides a display panel, a mask plate assembly, and a display device. The display panel includes a pixel defining unit having a first arc segment and a second arc segment. The outer side of the first arc segment includes a first arc edge and a second arc edge, and the inner side includes a fifth arc edge; the outer side of the second arc segment includes a third arc edge and a fourth arc edge, and the inner side includes a sixth arc edge; a first connection portion is disposed between two contact portions. A first pixel accommodation area is defined by the first arc edge of one pixel defining unit, the third arc edge of another pixel defining unit, and the first connection portion among two adjacent pixel defining units in the row direction; a second pixel accommodation area is defined by the second arc edge of one pixel defining unit, the fourth arc edge of another pixel defining unit, and the first connection portion among two adjacent pixel defining units in the row direction; the inner sides of the first arc segment and the second arc segment define a third pixel accommodation area. The pixel aperture ratio of the display panel is relatively high.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel, a mask assembly for evaporating a luminescent material into a pixel accommodating area formed by a pixel defining layer in the display panel, and a display device. Background Art

[0002] OLED screens have attracted widespread attention for their advantages such as self-luminescence, low power consumption, lightness, flexibility, brilliant colors, high contrast, and fast response rate. Existing mainstream OLED mobile phone screens all use SPR technology, but there will be a strong sense of grain at 400-450ppi, which affects the visual effect. With users' higher requirements for picture quality, the era of true color may be coming soon. After adopting true color, the number of sub-pixels increases by 50% compared with SPR at the same resolution, so the pixel opening rate decreases relatively, resulting in a reduction in lifespan, especially the blue light lifespan, which has always been the bottleneck restricting the lifespan of true color OLED. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one object of the present invention is to provide a display panel having a high pixel aperture ratio.

[0004] In one aspect of the present invention, the present invention provides a display panel. According to an embodiment of the present invention, the display panel includes: a pixel defining layer, the pixel defining layer includes: a plurality of pixel defining units arranged in an array, the pixel defining units are in contact with each other in the column direction, the pixel defining units are in contact with each other in the row direction and include a first arc segment and a second arc segment, the first arc segment and the second arc segment are bent in directions away from each other, an outer side of the first arc segment includes a first arc edge and a second arc edge, an outer side of the second arc segment includes a third arc edge and a fourth arc edge; an inner side of the first arc segment includes a fifth arc edge, and an inner side of the second arc segment includes a sixth arc edge; a plurality of first connection portions, a contact portion is defined at a contact position between two adjacent pixel defining units in the column direction, the first connection portion is disposed between two contact portions in two adjacent columns and in the same row for connecting the two contact portions, wherein, in the row direction, the first arc edge of one of the two adjacent pixel defining units, the third arc edge of the other pixel defining unit, and the first connection portion define a first pixel accommodation area; in the row direction, the second arc edge of one of the two adjacent pixel defining units, the fourth arc edge of the other pixel defining unit, and the first connection portion define a second pixel accommodation area; the inner sides of the first arc segment and the second arc segment define a third pixel accommodation area. Thus, the first pixel accommodation area, the second pixel accommodation area, and the third pixel accommodation area in the display panel are used to arrange different light-emitting materials, and the arrangement of the first pixel accommodation area, the second pixel accommodation area, and the third pixel accommodation area is the arrangement of pixels in the display panel. The above arrangement requirements for the first pixel accommodation area, the second pixel accommodation area, and the third pixel accommodation area can effectively increase the aperture ratio of the pixels while increasing the number of pixels, thereby improving the display quality of the display panel; moreover, the arrangement of the above sub-pixels can be applied to the arrangement of true-color pixels, ensuring a high aperture of the true-color pixels.

[0005] According to an embodiment of the present invention, the pixel defining layer further includes a second connection portion, and the pixel defining units are in contact with each other in the row direction through the second connection portion.

[0006] According to an embodiment of the present invention, both sides of the first connection portion in the column direction are straight lines, or, both sides of the first connection portion in the column direction are a seventh arc edge and an eighth arc edge respectively, and the seventh arc edge and the eighth arc edge are bent in the same direction.

[0007] According to an embodiment of the present invention, one side of the first arcuate edge of the first arcuate segment is in contact with one side of the third arcuate edge of the second arcuate segment, one side of the second arcuate edge of the first arcuate segment is in contact with one side of the fourth arcuate edge of the second arcuate segment, and the fifth arcuate edge and the sixth arcuate edge define a third pixel accommodation area.

[0008] According to an embodiment of the present invention, the first arcuate segment and the second arcuate segment are non-closed, and the pixel defining unit further includes a third arcuate segment and / or a fourth arcuate segment. The third arcuate segment is used to connect one side of the first arcuate edge of the first arcuate segment and one side of the third arcuate edge of the second arcuate segment, and / or the fourth arcuate segment is used to connect one side of the second arcuate edge of the first arcuate segment and one side of the fourth arcuate edge of the second arcuate segment.

[0009] According to an embodiment of the present invention, the fifth arcuate edge includes a first curved edge, a first line segment edge, and a second curved edge connected in sequence in the column direction, and the sixth arcuate edge includes a third curved edge, a second line segment edge, and a fourth curved edge connected in sequence in the column direction.

[0010] According to an embodiment of the present invention, define the orthographic projection of the first pixel accommodation area on the first arcuate segment adjacent to it as a first equal-thickness segment, and the thickness of the first equal-thickness segment is uniform; define the orthographic projection of the second pixel accommodation area on the first arcuate segment adjacent to it as a second equal-thickness segment, and the thickness of the second equal-thickness segment is uniform; define the orthographic projection of the first pixel accommodation area on the second arcuate segment adjacent to it as a third equal-thickness segment, and the thickness of the third equal-thickness segment is uniform, and the thickness of the first equal-thickness segment is equal to the thickness of the third equal-thickness segment; define the orthographic projection of the second pixel accommodation area on the second arcuate segment adjacent to it as a fourth equal-thickness segment, and the thickness of the fourth equal-thickness segment is uniform, and the thickness of the second equal-thickness segment is equal to the thickness of the fourth equal-thickness segment.

[0011] According to an embodiment of the present invention, the thickness of the first equal-thickness segment is equal to the thickness of the second equal-thickness segment.

[0012] According to an embodiment of the present invention, there are a first point and a second point respectively on the sides of the first pixel accommodation area and the second pixel accommodation area adjacent to each other in the column direction, and the distance between the first point and the second point is greater than the minimum distance between two adjacent third pixel accommodation areas in the column direction.

[0013] According to an embodiment of the present invention, the minimum distance between two adjacent third pixel accommodation areas in the column direction is 17-26 micrometers.

[0014] According to an embodiment of the present invention, the first pixel accommodating region is used to accommodate a red light-emitting material, the second pixel accommodating region is used to accommodate a green light-emitting material, and the third pixel accommodating region is used to accommodate a blue light-emitting material.

[0015] According to an embodiment of the present invention, the area of the first pixel accommodating region is less than or equal to the area of the second pixel accommodating region, and the area of the second pixel accommodating region is less than that of the third pixel accommodating region.

[0016] According to an embodiment of the present invention, the first pixel accommodating region, the second pixel accommodating region, and the third pixel accommodating region are all axially symmetric structures.

[0017] According to an embodiment of the present invention, in the column direction, the axis of symmetry of the first pixel accommodating region and the axis of symmetry of the second pixel accommodating region are on the same straight line.

[0018] According to an embodiment of the present invention, the display panel further includes: a plurality of support pillars, the support pillars are disposed on the surface of the pixel defining layer, and the number of the support pillars is less than the sum of the numbers of the first pixel accommodating region, the second pixel accommodating region, and the third pixel accommodating region.

[0019] In another aspect of the present invention, the present invention provides a mask plate assembly for evaporating a light-emitting material into the pixel accommodating region of the display panel described above. According to an embodiment of the present invention, it includes a first precision metal mask plate, a second precision metal mask plate, and a third precision metal mask plate. Among them, the first precision metal mask plate has a plurality of first openings arranged in an array, and the first openings are used to evaporate a first light-emitting material into the first pixel accommodating region. The first openings include a first arc side, a second arc side, and a first side, and the first side connects the first arc side and the second arc side; the second precision metal mask plate has a plurality of second openings arranged in an array, and the second openings are used to evaporate a second light-emitting material into the second pixel accommodating region. The second openings include a third arc side, a fourth arc side, and a second side, and the second side connects the third arc side and the fourth arc side; the third precision metal mask plate has a plurality of third openings arranged in an array, and the third openings are used to evaporate a third light-emitting material into the third pixel accommodating region. The third openings include a fifth arc side and a sixth arc side. Thus, the mask plate assembly can be used to evaporate different light-emitting materials onto the first pixel accommodating region, the second pixel accommodating region, and the third pixel accommodating region of the display panel described above. The manufacturing process of the mask plate assembly with the above structure is simple and has high precision, which can improve the evaporation efficiency.

[0020] According to an embodiment of the present invention, the first opening further includes a third side disposed opposite to the first side, the third side being a straight line connecting the first arc side and the second arc side; the second opening further includes a fourth side disposed opposite to the second side, the fourth side being a straight line connecting the third arc side and the fourth arc side.

[0021] According to an embodiment of the present invention, both the first side and the second side are straight lines, or both the first side and the second side are arc sides, and the first side and the second side are bent in the same direction.

[0022] According to an embodiment of the present invention, the fifth arc side and the sixth arc side are not closed, and the third opening includes a fifth side and / or a sixth side, the fifth side connecting one end of the fifth arc side and one end of the sixth arc side, and / or the sixth side connecting the other end of the fifth arc side and the other end of the sixth arc side.

[0023] According to an embodiment of the present invention, the fifth arc side includes a first curved side, a first straight side, and a second curved side connected in sequence in the column direction; the sixth arc side includes a third curved side, a second straight side, and a fourth curved side connected in sequence in the column direction.

[0024] According to an embodiment of the present invention, the first opening, the second opening, and the third opening are all axisymmetric structures in the column direction.

[0025] In another aspect of the present invention, the present invention provides a display device. According to an embodiment of the present invention, the display device includes the display panel described above. Thus, the display device has better display quality and provides the cost performance of the display device. Those skilled in the art can understand that the display device has all the features and advantages of the display panel described above, and will not be elaborated here too much. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, where:

[0027] Figure 1 is a schematic structural diagram of a pixel definition layer in an embodiment of the present invention;

[0028] Figure 2 is a schematic structural diagram of a pixel definition layer in another embodiment of the present invention;

[0029] Figure 3 is a schematic structural diagram of a pixel definition layer in still another embodiment of the present invention;

[0030] Figure 4 is a schematic structural diagram of a pixel definition layer in still another embodiment of the present invention;

[0031] Figure 5 It is a schematic structural diagram of a pixel definition layer in another embodiment of the present invention;

[0032] Figure 6 It is a schematic structural diagram of a third pixel accommodating area in another embodiment of the present invention;

[0033] Figure 7 It is a schematic structural diagram of a display panel in another embodiment of the present invention;

[0034] Figure 8 It is a schematic structural diagram of a first precision metal mask in another embodiment of the present invention;

[0035] Figure 9 It is a schematic structural diagram of a second precision metal mask in another embodiment of the present invention;

[0036] Figure 10 It is a schematic structural diagram of a third precision metal mask in another embodiment of the present invention;

[0037] Figure 11 It is a schematic structural diagram of a first precision metal mask in another embodiment of the present invention;

[0038] Figure 12 It is a schematic structural diagram of a second precision metal mask in another embodiment of the present invention;

[0039] Figure 13 It is a schematic structural diagram of a first precision metal mask in another embodiment of the present invention;

[0040] Figure 14 It is a schematic structural diagram of a second precision metal mask in another embodiment of the present invention;

[0041] Figure 15 It is a schematic structural diagram of a third precision metal mask in another embodiment of the present invention;

[0042] Figure 16 It is a schematic structural diagram of a third precision metal mask in another embodiment of the present invention. Detailed implementation manners

[0043] Next, the solution of the present invention will be explained in conjunction with embodiments. Those skilled in the art will understand that the following embodiments are only used to illustrate the present invention and should not be construed as limiting the scope of the present invention. For those not specified in the embodiments regarding specific technologies or conditions, they shall be carried out according to the technologies or conditions described in the literature in the art or according to the product specifications.

[0044] In one aspect of the present invention, the present invention provides a display panel. According to the embodiments of the present invention, with reference toFigure 1 , the display panel includes: a pixel definition layer 1000, the pixel definition layer 1000 includes: a plurality of pixel definition units 100 arranged in an array, the pixel definition units 100 are arranged in contact in the column direction, the pixel definition units 100 are arranged in contact in the row direction and include a first arc segment 110 and a second arc segment 120, the first arc segment 110 and the second arc segment 120 are bent in directions away from each other, the outer side 101 of the first arc segment 110 includes a first arc edge 111 and a second arc edge 112, the outer side 103 of the second arc segment 120 includes a third arc edge 123 and a fourth arc edge 124; the inner side 102 of the first arc segment 110 includes a fifth arc edge 115, the inner side 104 of the second arc segment 120 includes a sixth arc edge 126; a plurality of first connection parts 200, a contact part 105 is defined at the contact position of two adjacent pixel definition units 100 in the column direction, the first connection part 200 is arranged between two contact parts 105 in two adjacent columns and the same row for connecting the two contact parts 105, wherein, among two adjacent pixel definition units 100 in the row direction, the first arc edge 111 of one pixel definition unit 100, the third arc edge 123 of the other pixel definition unit 100 and the first connection part 200 define a first pixel accommodation area 10; among two adjacent pixel definition units 100 in the row direction, the second arc edge 112 of one pixel definition unit 100, the fourth arc edge 124 of the other pixel definition unit 100 and the first connection part 200 define a second pixel accommodation area 20; the inner side 102 of the first arc segment 110 and the inner side 104 of the second arc segment 120 define a third pixel accommodation area 30. Thus, the first pixel accommodation area, the second pixel accommodation area and the third pixel accommodation area in the display panel are used to set different light-emitting materials, and the arrangement of the first pixel accommodation area, the second pixel accommodation area and the third pixel accommodation area is the arrangement of the pixels in the display panel. The above arrangement requirements of the first pixel accommodation area, the second pixel accommodation area and the third pixel accommodation area can effectively improve the aperture ratio of the pixels while increasing the number of pixels, thereby improving the display quality of the display panel; moreover, the above arrangement of the sub-pixels can be applied to the arrangement of true-color pixels, ensuring a relatively high aperture of the true-color pixels.

[0045] It should be noted that the above "inner side" and "outer side" are relative to the third pixel accommodation area of the pixel definition unit 100, that is, the side of the pixel definition unit 100 away from the third pixel accommodation area 10 is the outer side, and the side of the pixel definition unit 100 close to the third pixel accommodation area 10 is the inner side.

[0046] According to an embodiment of the present invention, the first pixel accommodating region is for accommodating a red light-emitting material, the second pixel accommodating region is for accommodating a green light-emitting material, and the third pixel accommodating region is for accommodating a blue light-emitting material. In some embodiments of the present invention, the area of the first pixel accommodating region is less than or equal to the area of the second pixel accommodating region, and the area of the second pixel accommodating region is less than the area of the third pixel accommodating region. Thus, the light-emitting requirements of the display panel can be met.

[0047] According to an embodiment of the present invention, referring to Figure 2 , the pixel defining layer 1000 further includes a second connecting portion 300, and the pixel defining units 100 are arranged in contact with each other in the row direction through the second connecting portion 300. Thus, the first pixel accommodating region 10 can be jointly defined by the first arc-shaped side 111 of one pixel defining unit 100, the third arc-shaped side 123 of another pixel defining unit 100, the first connecting portion 200, and the second connecting portion 300 among two adjacent pixel defining units 100 in the row direction, and the second pixel accommodating region 20 is jointly defined by the second arc-shaped side 112 of one pixel defining unit 100, the fourth arc-shaped side 124 of another pixel defining unit 100, the first connecting portion 200, and the second connecting portion 300.

[0048] According to an embodiment of the present invention, the two sides of the first connecting portion 200 in the column direction can be straight lines or arcs. In some embodiments, referring to Figure 1 and 2 , the two sides of the first connecting portion 200 in the column direction are both straight lines; in other embodiments, referring to Figure 4 , the two sides of the first connecting portion 200 in the column direction are respectively a seventh arc-shaped side 210 and an eighth arc-shaped side 220, and the seventh arc-shaped side 210 and the eighth arc-shaped side 220 are bent in the same direction. Thus, the specific shape of the first connecting portion 200 can be flexibly set according to the specific area requirements of the first pixel accommodating region and the second pixel accommodating region.

[0049] According to an embodiment of the present invention, the shape of the third pixel accommodating region can be appropriately adjusted according to the specific pixel arrangement. Three cases of the third pixel accommodating region are given below. Specifically:

[0050] In some embodiments, referring to Figures 1 to 3 , one side of the first arc-shaped side 111 of the first arc-shaped segment 110 is in contact with one side of the third arc-shaped side 123 of the second arc-shaped segment 120, one side of the second arc-shaped side 112 of the first arc-shaped segment 110 is in contact with one side of the fourth arc-shaped side 124 of the second arc-shaped segment 120, and the fifth arc-shaped side 115 and the sixth arc-shaped side 126 define the third pixel accommodating region.

[0051] In some other embodiments, referring to Figure 4 ( Figure 4 in which the pixel defining unit 100 includes the third arc segment 130 and / or the fourth arc segment 140 at the same time as an example), the first arc segment 110 and the second arc segment 120 are not enclosed, the pixel defining unit 100 further includes the third arc segment 130 and / or the fourth arc segment 140, the third arc segment 130 is used to connect one side of the first arc edge 111 of the first arc segment 110 and one side of the third arc edge 123 of the second arc segment 120, and / or the fourth arc segment 140 is used to connect one side of the second arc edge 112 of the first arc segment 110 and one side of the fourth arc edge 124 of the second arc segment 120. Thus, in the column direction, the pixel defining units 100 are arranged in contact with each other in sequence through the third arc segment and the fourth arc segment, and the third pixel accommodating area is defined by the fifth arc edge 115, the sixth arc edge 126, the inner side edge 131 of the third arc segment 130 and the inner side edge 141 of the fourth arc segment 140. Further, the inner side edge 131 of the third arc segment 130 and the inner side edge 141 of the fourth arc segment 140 can be straight lines.

[0052] In still some other embodiments, referring to Figure 5 and Figure 6 ( Figure 6 being Figure 5 an enlarged view of a third pixel accommodating area 30 in

[0053] According to an embodiment of the present invention, referring to Figure 1, define the orthographic projection of the first pixel accommodation area 10 on the first arc segment 110 adjacent thereto as the first equal-thickness segment 11, and the thickness of the first equal-thickness segment 11 is uniform; define the orthographic projection of the second pixel accommodation area 20 on the first arc segment 110 adjacent thereto as the second equal-thickness segment 22, and the thickness of the second equal-thickness segment 22 is uniform; define the orthographic projection of the first pixel accommodation area 10 on the second arc segment 120 adjacent thereto as the third equal-thickness segment 13, and the thickness of the third equal-thickness segment 13 is uniform. The thickness h1 of the first equal-thickness segment 11 is equal to the thickness h3 of the third equal-thickness segment 13; define the orthographic projection of the second pixel accommodation area 20 on the second arc segment 120 adjacent thereto as the fourth equal-thickness segment 24, and the thickness of the fourth equal-thickness segment 24 is uniform. The thickness of the second equal-thickness segment 22 is equal to the thickness of the fourth equal-thickness segment 24. Thus, the aperture ratio of the pixels arranged according to the above size requirements is relatively large. Further, the thickness of the first equal-thickness segment 11 is equal to the thickness of the second equal-thickness segment 22, so the thickness of the third equal-thickness segment 13 is equal to the thickness of the fourth equal-thickness segment 24. Thus, the aperture ratio of the sub-pixels can reach the maximum.

[0054] According to an embodiment of the present invention, on the sides where the first pixel accommodation area 10 and the second pixel accommodation area 20 are adjacent to each other in the column direction, there are a first point A and a second point B respectively, and the distance D1 between the first point A and the second point B is greater than the minimum distance D2 between two adjacent third pixel accommodation areas 30 in the column direction. Among them, as Figure 1 shown, the above "two adjacent first pixel accommodation areas 10 and second pixel accommodation areas 20 in the column direction" may be two adjacent first pixel accommodation areas 10 and second pixel accommodation areas 20 located between two adjacent first connection parts 200, or may refer to two adjacent first pixel accommodation areas 10 and second pixel accommodation areas 20 located on both sides of the same first connection part 200. The requirement that D1 is greater than D2 only needs to meet one of the above two situations. Thus, it is beneficial to improve the aperture ratio of the pixels. In some embodiments, the minimum distance D2 between two adjacent third pixel accommodation areas 30 in the column direction is 17 to 26 micrometers.

[0055] According to an embodiment of the present invention, referring to Figures 1 to 5 , the first pixel accommodation area 10, the second pixel accommodation area 20, and the third pixel accommodation area 30 are all axisymmetric structures. Thus, it is beneficial to the reasonable layout of multiple pixels and improves the pixel aperture ratio. According to an embodiment of the present invention, in the column direction, the symmetry axes of the first pixel accommodation area 10 and the second pixel accommodation area 20 are on the same straight line. Thus, it can further contribute to improving the pixel aperture ratio.

[0056] According to an embodiment of the present invention, referring to Figure 7, the display panel further includes: a plurality of support columns 400 disposed on the surface of the pixel defining layer 1000, and the number of the support columns 400 is less than the sum of the numbers of the first pixel accommodation area 10, the second pixel accommodation area 20, and the third pixel accommodation area 30. Thus, the support columns can be used to support the fine metal mask plate for vapor-depositing the light-emitting material, and the requirement for the number of the support columns can ensure a good supporting effect without affecting the vapor deposition of the light-emitting material.

[0057] Among them, there is no special requirement for the shape of the support columns, and those skilled in the art can flexibly select according to actual needs. In some embodiments, the shape of the support columns includes, but is not limited to, a cylindrical shape, a quadrangular prism shape, or other irregular prism structures.

[0058] Those skilled in the art can understand that, in addition to the pixel defining layer and the support columns described above, the display panel further includes structures or components necessary for a conventional display panel, such as a substrate (glass or polymer substrate), pixel circuit structures such as thin film transistors, cathodes and anodes of OLED devices, encapsulation films, color filters, glass covers, and the like.

[0059] In another aspect of the present invention, the present invention provides a mask plate assembly for vapor-depositing a light-emitting material into the pixel accommodation areas (including the first pixel accommodation area, the second pixel accommodation area, and the third pixel accommodation area) of the display panel described above. According to an embodiment of the present invention, it includes a first fine metal mask plate 1, a second fine metal mask plate 2, and a third fine metal mask plate 3, wherein,

[0060] Referring to Figure 8 , the first fine metal mask plate 1 has a plurality of first openings 01 arranged in an array, and the first openings 01 are used for vapor-depositing a first light-emitting material into the first pixel accommodation area. The first openings 01 include a first arc side 011, a second arc side 012, and a first side 013, and the first side 013 connects the first arc side 011 and the second arc side 012. That is, the first openings 01 are formed by at least two arcs, and the shape of the first openings corresponds to the shape of the first pixel accommodation area described above.

[0061] Referring to Figure 9 , the second fine metal mask plate 2 has a plurality of second openings 02 arranged in an array, and the second openings 02 are used for vapor-depositing a second light-emitting material into the second pixel accommodation area. The second openings 02 include a third arc side 021, a fourth arc side 022, and a second side 023, and the second side 023 connects the third arc 021 and the fourth arc side 022. That is, the second openings 02 are formed by at least two arcs, and the shape of the second openings corresponds to the shape of the second pixel accommodation area described above.

[0062] Referring to Figure 10, the third precision metal mask 3 has a plurality of third openings 03 arranged in an array. The third openings 03 are used to evaporate a third light-emitting material into the third pixel accommodating region. The third openings 03 include a fifth arc edge 031 and a sixth arc edge 032. That is, the third openings 03 are at least composed of two arcs, and the shape of the third openings 03 corresponds to the shape of the above-mentioned third pixel accommodating region.

[0063] According to an embodiment of the present invention, the mask assembly can be used to evaporate different light-emitting materials onto the first pixel accommodating region, the second pixel accommodating region, and the third pixel accommodating region of the display panel described above. The manufacturing process of the mask assembly with the above structure is simple, with high precision, and can improve the evaporation efficiency.

[0064] According to an embodiment of the present invention, referring to Figure 11 , the first opening 01 further includes a third side 014 disposed opposite to the first side 013. The third side 014 is a straight line connecting the first arc edge 011 and the second arc edge 012; referring to Figure 12 , the second opening 02 further includes a fourth side 024 disposed opposite to the second side 023. The fourth side 024 is a straight line connecting the third arc edge 021 and the fourth arc edge 022. Thus, the manufacturing process of the mask assembly with the above structure is simple, with high precision, and can improve the evaporation efficiency.

[0065] In some embodiments of the present invention, referring to Figure 8 and Figure 9 and Figure 11 and 12 , both the first side 013 and the second side 023 are straight lines. In other embodiments of the present invention, referring to Figure 13 and Figure 14 , both the first side 013 and the second side 023 are arc edges, and the first side 013 and the second side 023 are bent in the same direction. In this way, both the first opening and the second opening are composed of three arcs. The manufacturing processes of the first precision metal mask 1 and the second precision metal mask 2 with the above two structures are simple, with high precision, and can improve the evaporation efficiency.

[0066] According to an embodiment of the present invention, the third opening can have the following several structures:

[0067] In some embodiments, referring to Figure 15(Taking the example that the third opening 03 includes both the fifth side 033 and the sixth side 034 in the figure), the fifth arc side 031 and the sixth arc side 032 are not closed, the third opening 03 includes the fifth side 033 and / or the sixth side 034, the fifth side 033 connects one end of the fifth arc side 031 and one end of the sixth arc side 032, and / or the sixth side 034 connects the other end of the fifth arc side 031 and the other end of the sixth arc side 032. Among them, the fifth side and the sixth side can be straight lines or curves. The manufacturing process of the third precision metal mask plate 3 with the above structure is simple, has high precision, and can improve the evaporation coating efficiency.

[0068] In some other embodiments, referring to Figure 16 , the fifth arc side 031 includes a first curved side 0311, a first straight side 0312, and a second curved side 0313 that are sequentially connected in the column direction, and the sixth arc side 032 includes a third curved side 0321, a second straight side 0322, and a fourth curved side 0323 that are sequentially connected in the column direction, where the first straight side and the second straight side are straight lines. The manufacturing processes of the third precision metal mask plates 3 with the above two structures are simple, have high precision, and can improve the evaporation coating efficiency. The manufacturing process of the third precision metal mask plate 3 with the above structure is simple, has high precision, and can improve the evaporation coating efficiency.

[0069] According to an embodiment of the present invention, referring to Figures 8 to 16 , the first opening 01, the second opening 02, and the third opening 03 are all axisymmetric structures. Among them, when the first metal precision mask plate and the second precision metal mask plate are overlapped and placed, the symmetry axes of the first opening 01 and the second opening 02 are located on the same straight line. Therefore, the precision metal mask plate with this structure is beneficial to manufacturing pixels with a higher aperture ratio.

[0070] In another aspect of the present invention, the present invention provides a display device. According to an embodiment of the present invention, the display device includes the display panel described above. Thus, the display device has better display quality and provides the cost performance of the display device. Those skilled in the art can understand that the display device has all the features and advantages of the display panel described above, and will not be elaborated here too much.

[0071] Those skilled in the art can understand that in addition to the display panel described above, the display device also includes structures or components necessary for a conventional display device, such as also including necessary structures and components such as a battery, a rear cover, a touch panel, a CPU, an audio module, a fingerprint module, and a camera module.

[0072] According to an embodiment of the invention, there is no special requirement for the specific type of the display device, and those skilled in the art can flexibly select according to actual needs. In some embodiments, the specific types of the display device include, but are not limited to, display devices with display and photographing functions such as mobile phones, laptops, iPads, Kindles, TVs, etc.

[0073] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0074] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A display panel, characterized in that, comprising: a pixel defining layer, the pixel defining layer comprising: a plurality of pixel defining units arranged in an array, the pixel defining units are in contact with each other in the column direction, the pixel defining units are in contact with each other in the row direction and each pixel defining unit includes a first arc segment and a second arc segment, the first arc segment and the second arc segment are bent in directions away from each other, an outer side of the first arc segment includes a first arc edge and a second arc edge, an outer side of the second arc segment includes a third arc edge and a fourth arc edge; an inner side of the first arc segment includes a fifth arc edge, and an inner side of the second arc segment includes a sixth arc edge; a plurality of first connection portions, a contact portion is defined at a contact location between two adjacent pixel defining units in the column direction, the first connection portion is disposed between two contact portions in two adjacent columns and in the same row for connecting the two contact portions, wherein, a first pixel accommodation area is defined by the first arc edge of one of the two adjacent pixel defining units in the row direction, the third arc edge of the other pixel defining unit, and the first connection portion; a second pixel accommodation area is defined by the second arc edge of one of the two adjacent pixel defining units in the row direction, the fourth arc edge of the other pixel defining unit, and the first connection portion; an inner side of the first arc segment and an inner side of the second arc segment define a third pixel accommodation area; both sides of the first connection portion in the column direction are straight lines, or, both sides of the first connection portion in the column direction are respectively a seventh arc edge and an eighth arc edge, and the seventh arc edge and the eighth arc edge are bent in the same direction; one side of the first arc edge of the first arc segment and one side of the third arc edge of the second arc segment are in contact with each other, one side of the second arc edge of the first arc segment and one side of the fourth arc edge of the second arc segment are in contact with each other, and the fifth arc edge and the sixth arc edge define the third pixel accommodation area.

2. The display panel according to claim 1, characterized in that, the pixel defining layer further includes a second connection portion, and the pixel defining units are in contact with each other in the row direction through the second connection portion.

3. The display panel according to claim 1 or 2, characterized in that, the first arc segment and the second arc segment are not closed, and the pixel defining unit further includes a third arc segment and / or a fourth arc segment, the third arc segment is used for connecting one side of the first arc edge of the first arc segment and one side of the third arc edge of the second arc segment, and / or the fourth arc segment is used for connecting one side of the second arc edge of the first arc segment and one side of the fourth arc edge of the second arc segment.

4. The display panel according to claim 1 or 2, characterized in that, The fifth arc edge includes a first curved edge, a first line segment edge, and a second curved edge that are sequentially connected in the column direction, and the sixth arc edge includes a third curved edge, a second line segment edge, and a fourth curved edge that are sequentially connected in the column direction.

5. The display panel according to claim 1 or 2, wherein, A positive projection of the first pixel accommodation area on the adjacent first arc segment is defined as a first equal-thickness segment, and the thickness of the first equal-thickness segment is uniform; A positive projection of the second pixel accommodation area on the adjacent first arc segment is defined as a second equal-thickness segment, and the thickness of the second equal-thickness segment is uniform; A positive projection of the first pixel accommodation area on the adjacent second arc segment is defined as a third equal-thickness segment, and the thickness of the third equal-thickness segment is uniform, and the thickness of the first equal-thickness segment is equal to the thickness of the third equal-thickness segment; A positive projection of the second pixel accommodation area on the adjacent second arc segment is defined as a fourth equal-thickness segment, and the thickness of the fourth equal-thickness segment is uniform, and the thickness of the second equal-thickness segment is equal to the thickness of the fourth equal-thickness segment.

6. The display panel according to claim 5, wherein, The thickness of the first equal-thickness segment is equal to the thickness of the second equal-thickness segment.

7. The display panel according to claim 1 or 2, wherein, There are a first point and a second point on the edges where the first pixel accommodation area and the second pixel accommodation area are adjacent to each other in the column direction, and the distance between the first point and the second point is greater than the minimum distance between two adjacent third pixel accommodation areas in the column direction.

8. The display panel according to claim 7, wherein, The minimum distance between two adjacent third pixel accommodation areas in the column direction is 17 - 26 micrometers.

9. The display panel according to claim 1 or 2, wherein, The first pixel accommodation area is used to accommodate a red light-emitting material, the second pixel accommodation area is used to accommodate a green light-emitting material, and the third pixel accommodation area is used to accommodate a blue light-emitting material.

10. The display panel according to claim 9, wherein, The area of the first pixel accommodation area is less than or equal to the area of the second pixel accommodation area, and the area of the second pixel accommodation area is less than the area of the third pixel accommodation area.

11. The display panel according to claim 1 or 2, wherein, The first pixel accommodation area, the second pixel accommodation area, and the third pixel accommodation area are all axisymmetric structures.

12. The display panel according to claim 11, wherein, In the column direction, the symmetry axes of the first pixel accommodation area and the second pixel accommodation area are on the same straight line.

13. The display panel according to claim 1 or 2, wherein, It further includes: A plurality of support pillars, the support pillars are arranged on the surface of the pixel defining layer, and the number of the support pillars is less than the sum of the numbers of the first pixel accommodation area, the second pixel accommodation area, and the third pixel accommodation area.

14. A mask plate assembly for evaporating a light-emitting material into a pixel accommodating region in the display panel according to any one of claims 1 to 13, characterized in that, it includes a first precision metal mask plate, a second precision metal mask plate, and a third precision metal mask plate, wherein, the first precision metal mask plate has a plurality of first openings arranged in an array, the first openings are used for evaporating a first light-emitting material into a first pixel accommodating region, the first openings include a first arc side, a second arc side, and a first side, and the first side connects the first arc side and the second arc side; the second precision metal mask plate has a plurality of second openings arranged in an array, the second openings are used for evaporating a second light-emitting material into a second pixel accommodating region, the second openings include a third arc side, a fourth arc side, and a second side, and the second side connects the third arc side and the fourth arc side; the third precision metal mask plate has a plurality of third openings arranged in an array, the third openings are used for evaporating a third light-emitting material into a third pixel accommodating region, the third openings include a fifth arc side and a sixth arc side.

15. The mask plate assembly according to claim 14, characterized in that, the first opening further includes a third side oppositely arranged to the first side, the third side is a straight line and connects the first arc side and the second arc side; the second opening further includes a fourth side oppositely arranged to the second side, the fourth side is a straight line and connects the third arc side and the fourth arc side.

16. The mask plate assembly according to claim 14 or 15, characterized in that, both the first side and the second side are straight lines, or both the first side and the second side are arc sides, and the first side and the second side are bent in the same direction.

17. The mask plate assembly according to claim 14 or 15, characterized in that, the fifth arc side and the sixth arc side are not enclosed, the third opening includes a fifth side and / or a sixth side, the fifth side connects one end of the fifth arc side and one end of the sixth arc side, and / or the sixth side connects the other end of the fifth arc side and the other end of the sixth arc side.

18. The mask plate assembly according to claim 14 or 15, characterized in that, the fifth arc side includes a first curved side, a first straight side, and a second curved side connected in sequence in the column direction; the sixth arc side includes a third curved side, a second straight side, and a fourth curved side connected in sequence in the column direction.

19. The mask plate assembly according to claim 14 or 15, characterized in that, the first opening, the second opening, and the third opening are all axisymmetric structures.

20. A display device, characterized in that, it includes the display panel according to any one of claims 1 to 13.

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