CN113594207B - Pixel arrangement structure, mask plate and display panel - Google Patents
Pixel arrangement structure, mask plate and display panel Download PDFInfo
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- CN113594207B CN113594207B CN202010737417.1A CN202010737417A CN113594207B CN 113594207 B CN113594207 B CN 113594207B CN 202010737417 A CN202010737417 A CN 202010737417A CN 113594207 B CN113594207 B CN 113594207B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
Abstract
The invention relates to a pixel arrangement structure, a mask plate and a display panel, wherein the pixel arrangement structure comprises a repeating unit, the repeating unit is formed by embedding three light-emitting units with different light-emitting colors and the same shape in an edge-to-edge manner, and the light-emitting units are in an N-edge shape; each light-emitting unit consists of M sub-pixels with the same light-emitting color and the same shape, and in the same repeating unit, one sub-pixel in each light-emitting unit is adjacent to each sub-pixel in two adjacent light-emitting units to form a pixel unit; wherein N is an integer greater than or equal to 12 and M is an integer greater than or equal to 3. The pixel arrangement structure can reduce the preparation difficulty on the basis of improving the resolution, and lays a foundation for manufacturing the high-resolution OLED device.
Description
Technical Field
The present invention relates to the field of electronic display technologies, and in particular, to a pixel arrangement structure, a mask plate, and a display panel.
Background
The organic light emitting diode (Organic Light Emitting Diodes, OLED) has advantages of self-luminescence, wide visual angle, high contrast, low power consumption, extremely fast response speed, etc., and gradually becomes a mainstream choice for high-end flat panel displays. The method for preparing the organic light-emitting diode mainly adopts a vacuum evaporation device to deposit various functional layers on a pretreated substrate, so as to form the required OLED device. At present, the resolution of the display device is improved, the display effect of the device is enhanced, and the display device becomes one of the directions of efforts of various manufacturers. However, the high resolution display device is manufactured by vapor deposition, and a fine mask is required, which is costly to manufacture, clean and maintain. Although the use of fine masks can be reduced by using an inkjet printing method to manufacture an organic light emitting diode, the same suffers from the problem that high-precision inkjet printing equipment is required to accurately drop inks of different components into pixel pits. Therefore, how to reduce the preparation difficulty on the basis of improving the resolution becomes a main research direction.
Disclosure of Invention
Accordingly, it is necessary to provide a pixel arrangement structure, a mask plate and a display panel. The pixel arrangement structure can reduce the preparation difficulty on the basis of improving the resolution, and lays a foundation for manufacturing the high-resolution OLED device.
The pixel arrangement structure comprises a repeating unit, wherein the repeating unit is formed by embedding three light-emitting units with different light-emitting colors and the same shape in an edge-to-edge manner, and the light-emitting units are in an N-edge shape;
each light-emitting unit consists of M sub-pixels with the same light-emitting color and the same shape, and in the same repeating unit, one sub-pixel in each light-emitting unit is adjacent to each sub-pixel in the other two adjacent light-emitting units;
wherein N is an integer greater than or equal to 12 and M is an integer greater than or equal to 3.
In one embodiment, a plurality of said repeating units are included; the plurality of repeating units are arranged in a side-to-side manner along the row direction and the column direction so that one sub-pixel of one repeating unit is adjacent to each sub-pixel of two light emitting units of an adjacent repeating unit.
In one embodiment, a plurality of repeating units are sequentially distributed in the row direction, and repeating units of any two adjacent rows are staggered in the column direction; or (b)
The plurality of repeating units are distributed in sequence in the column direction, and the repeating units of any two adjacent columns are distributed in a staggered manner in the row direction.
In one embodiment, N is 12 and M is 3.
In one embodiment, a pixel defining layer is disposed between a center point of the light emitting unit and three vertexes of the light emitting unit, the pixel defining layers between every two of the three sub-pixels in the light emitting unit are respectively a first pixel defining layer, a second pixel defining layer and a third pixel defining layer, so as to divide the light emitting unit into three sub-pixels with equal light emitting areas, and an included angle between two adjacent pixel defining layers is 120 °.
In one embodiment, the sub-pixels are hexagonal, and the hexagonal is formed by a first side, a second side, a third side, a fourth side, a fifth side and a sixth side, which are sequentially connected end to end, an included angle between the first side and the second side is 120 °, the first side, the third side and the fifth side are parallel to each other, and the second side, the fourth side and the sixth side are parallel to each other.
In one embodiment, the ratio of the lengths of the first side, the third side and the fifth side is 1 (1.99-2.01): 0.99-1.01, and the ratio of the lengths of the second side, the fourth side and the sixth side is 1 (1.99-2.01): 0.99-1.01.
In one embodiment, the length of the first edge is equal to the length of the second edge.
In one embodiment, the three sub-pixels of the light emitting unit are a first sub-pixel, a second sub-pixel and a third sub-pixel, respectively;
wherein a first edge of the first sub-pixel and a second edge of the third sub-pixel are overlapped to form the first pixel defining layer; the second edge of the first sub-pixel is overlapped with the first edge of the second sub-pixel to form the second pixel defining layer; the first edge of the third sub-pixel and the second edge of the second sub-pixel are overlapped to form the third pixel defining layer; and an included angle between the third side of the first sub-pixel and the sixth side of the second sub-pixel is 60 degrees, an included angle between the sixth side of the first sub-pixel and the third side of the third sub-pixel is 60 degrees, and an included angle between the third side of the second sub-pixel and the sixth side of the third sub-pixel is 60 degrees.
In one embodiment, the three light emitting units of the repeating unit are a first light emitting unit, a second light emitting unit and a third light emitting unit, and each light emitting unit is independently composed of a first sub-pixel, a second sub-pixel and a third sub-pixel, and the second sub-pixel of the first light emitting unit is adjacent to the third sub-pixel of the second light emitting unit and the first sub-pixel of the third light emitting unit; and the third side of the second sub-pixel of the first light emitting unit is in edge-to-edge embedded arrangement with the fourth side of the first sub-pixel of the third light emitting unit, the fourth side of the second sub-pixel of the first light emitting unit is in edge-to-edge embedded arrangement with the third side of the third sub-pixel of the second light emitting unit, and the fourth side of the third sub-pixel of the second light emitting unit is in edge-to-edge embedded arrangement with the third side of the first sub-pixel of the third light emitting unit.
In one embodiment, the pixel defining layer is provided with a through hole, so that a plurality of sub-pixels in the light emitting unit can be mutually communicated through the through hole.
In one embodiment, the through hole is formed at the junction of the first pixel defining layer, the second pixel defining layer and the third pixel defining layer, and the center of the through hole coincides with the center point of the light emitting unit.
A mask plate assembly is used for preparing the pixel arrangement structure and comprises at least one mask plate, wherein an opening is formed in the mask plate and used for forming a light-emitting unit in the repeating unit.
A display panel comprises the pixel arrangement structure.
According to the pixel arrangement structure, the N-edge-shaped light-emitting units are embedded in an edge-to-edge mode, N is an integer larger than or equal to 12, so that the number of pixel units in a unit area can be increased, the purpose of improving the resolution of a display device is achieved, and the M sub-pixels in each light-emitting unit of the pixel arrangement structure can be prepared together in the same light-emitting color, so that the manufacturing difficulty can be reduced, the equipment precision requirement is lowered, meanwhile, the size of each sub-pixel can be effectively reduced, the ink can not overflow due to the fact that the pixel area is too small, and therefore high-resolution display is achieved under the same equipment precision.
Drawings
FIG. 1 is a schematic diagram of a pixel arrangement structure according to an embodiment of the invention;
fig. 2 a is a schematic structural diagram of two repeating units of the pixel arrangement structure shown in fig. 1 along a row direction, B is a schematic structural diagram of two repeating units of the pixel arrangement structure shown in fig. 1 along a column direction, and C is a schematic structural diagram of one pixel unit of the pixel arrangement structure shown in fig. 1;
fig. 3 is a schematic structural view of a light emitting unit of the pixel arrangement structure shown in fig. 1;
fig. 4 is a schematic structural view of a light emitting unit in the pixel arrangement structure shown in fig. 1;
FIG. 5 is a schematic diagram of a sub-pixel in a light emitting unit in the pixel arrangement structure shown in FIG. 1;
FIG. 6 is a schematic diagram of a light emitting unit in the pixel arrangement structure shown in FIG. 1;
FIG. 7 is a schematic diagram of a repeating unit composed of light emitting cells in the pixel arrangement shown in FIG. 6;
fig. 8 is a schematic view of a mask plate according to an embodiment of the invention.
Detailed Description
The present invention will be described more fully hereinafter in order to facilitate an understanding of the present invention, and preferred embodiments of the present invention are set forth. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, a pixel arrangement structure 1 according to an embodiment of the present invention includes a repeating unit 10, where the repeating unit 10 is formed by embedding three light emitting units 100 (such as a first light emitting unit 111, a second light emitting unit 112, and a third light emitting unit 113 in fig. 1) with different light emitting colors and identical shapes in an edge-to-edge manner, and the light emitting units are N-shaped; each light-emitting unit consists of M sub-pixels 1000 with the same light-emitting color and the same shape, and in the same repeating unit, one sub-pixel in each light-emitting unit is adjacent to each sub-pixel in the other two adjacent light-emitting units to form a pixel unit; wherein N is an integer greater than or equal to 12 and M is an integer greater than or equal to 3.
According to the pixel arrangement structure, the N-edge-shaped light-emitting units are embedded in an edge-to-edge mode, N is an integer larger than or equal to 12, so that the number of pixel units in a unit area can be increased, the purpose of improving the resolution of a display device is achieved, and the M sub-pixels in each light-emitting unit of the pixel arrangement structure can be prepared together in the same light-emitting color, so that the manufacturing difficulty can be reduced, the equipment precision requirement is lowered, meanwhile, the size of each sub-pixel can be effectively reduced, the ink can not overflow due to the fact that the pixel area is too small, and therefore high-resolution display is achieved under the same equipment precision.
It is understood that the light emitting unit 100 is composed of M sub-pixels, meaning that a pixel defining layer is formed within one light emitting unit, and the light emitting unit is divided into a plurality of sub-pixels by the pixel defining layer. In addition, the pixel defining layer forming the periphery of the light emitting unit and the pixel defining layer in the light emitting unit are arranged in the same layer, and the thickness of the pixel defining layer forming the periphery of the light emitting unit is larger than that of the pixel defining layer in the light emitting unit, so that the light emitting unit is convenient to prepare, and the light emitting unit is not particularly limited herein, and is understood to be within the protection scope of the present invention.
It is understood that the shape of the light emitting unit refers to a shape formed by jointly splicing sub-pixels of the light emitting unit, and the N-sided light emitting unit refers to a light emitting unit having N sides at its periphery, each side being formed by a pixel defining layer. Because of differences in preparation process, equipment, etc., each side does not need a line segment in a strict sense, and an acceptable error in the field can exist; similarly, the lengths of the sides, the intervals between the sub-pixels, etc. may have an acceptable error in the art, and may be determined according to the precision of the manufacturing process, and when the precision of the manufacturing process is high, the intervals may be 0, which should not be construed as limiting the present invention.
Further, the pixel arrangement structure 1 includes a plurality of repeating units 10; the plurality of repeating units 10 are arranged in a side-to-side manner along the row direction and the column direction so that one subpixel of one repeating unit and one subpixel of each of two adjacent light emitting units of an adjacent repeating unit together constitute a pixel unit.
For example: as shown in fig. 2 a, two repeating units in the row direction are a first repeating unit 11 and a second repeating unit 22, respectively, the first repeating unit 11 includes three light emitting units, respectively, a first light emitting unit 111, a second light emitting unit 112, and a third light emitting unit 113, and the second repeating unit 22 includes three light emitting units, respectively, a first light emitting unit 221, a second light emitting unit 222, and a third light emitting unit 223. The second light emitting unit 112 of the first repeating unit 11 is adjacent to the first light emitting unit 221 of the second repeating unit 22 and the third light emitting unit 223 of the second repeating unit 22, and the adjacent light emitting units are arranged in a chimeric manner edge to edge with each other, so that one sub-pixel of the second light emitting unit 112 in the first repeating unit 11 and one sub-pixel of the first light emitting unit 221 in the second repeating unit 22 and one sub-pixel of the third light emitting unit 223 in the second repeating unit 22 constitute a pixel unit (as shown in fig. 2 c).
Also, as shown in fig. 2B, two repeating units in the column direction are the first repeating unit 11 and the second repeating unit 22, respectively, the first repeating unit 11 includes three light emitting units, respectively, the first light emitting unit 111, the second light emitting unit 112, and the third light emitting unit 113, and the second repeating unit 22 includes three light emitting units, respectively, the first light emitting unit 221, the second light emitting unit 222, and the third light emitting unit 223. The second light emitting unit 112 of the first repeating unit 11, the third light emitting unit 113 of the first repeating unit 11 are adjacent to the first light emitting unit 221 of the second repeating unit 22, and the adjacent light emitting units are arranged in a chimeric manner edge to edge with each other, so that one sub-pixel in the second light emitting unit 112 in the first repeating unit 11, one sub-pixel in the third light emitting unit 113 in the first repeating unit 11, and one sub-pixel in the first light emitting unit 221 in the second repeating unit 22 constitute a pixel unit (as shown in fig. 2C).
Further, as shown in fig. 2 a, a plurality of repeating units are sequentially distributed in the row direction; as shown in fig. 2B, the repeating units of any adjacent two rows are distributed in a staggered manner in the column direction; it is understood that the dislocation distribution refers to that the line between the center points of the first repeating unit and the second repeating unit is not parallel (at an angle) to the column direction.
Further, as shown in fig. 2 a, in the row direction, the line connecting the center point of the first subpixel 111 of the first repeating unit 11 and the center point of the first subpixel 221 of the second repeating unit 22 is parallel to the row direction; the line connecting the center point of the second subpixel 112 of the first repeating unit 11 and the center line point of the second subpixel 222 of the second repeating unit 22 is parallel to the row direction; the line connecting the center point of the third subpixel 113 of the first repeating unit 22 and the center point of the third subpixel 223 of the second repeating unit 22 is parallel to the row direction;
further, as shown in fig. 2B, in the column direction, a line between the center point of the second subpixel 112 of the first repeating unit 11 and the center point of the first subpixel 221 of the second repeating unit 22 is parallel to the column direction; further, the center point of the second subpixel 112 of the first repeating unit 11, the center point of the first subpixel 221 of the second repeating unit 22, and the center point of the third subpixel 223 of the second repeating unit 22 are on a straight line and parallel to the column direction; the line between the center point of the first subpixel 111 of the first repeating unit 11 and the center point of the third subpixel 113 of the first repeating unit 11 is parallel to the column direction.
Further, a plurality of repeating units are sequentially distributed in the column direction; the repeating units of any two adjacent columns are offset in the row direction, and in this case, the difference from the above embodiment is that the rows and columns are interchanged, which is specifically described above, and a detailed description thereof is omitted herein.
It will be appreciated that the emission color of the light emitting unit may be selected according to existing emission color combination principles, such as: the three light emitting units are respectively a red light emitting unit, a blue light emitting unit and a green light emitting unit.
Further, the first light emitting unit is a red light emitting unit, the second light emitting unit is a blue light emitting unit, and the third light emitting unit is a green light emitting unit.
Further, N is 12, i.e., the light emitting unit has a dodecagon shape; further, M is 3 to further improve the resolution of the display panel.
It is understood that M is 3, and each light emitting unit includes 3 sub-pixels with the same light emitting color and the same shape, and it is understood that the light emitting unit is divided into three sub-pixels by providing pixel definition in the light emitting unit, and a specific dividing manner is not particularly limited, and it is understood that all the light emitting units are within the protection scope of the present invention.
Further, as shown in FIG. 3, pixel defining layers are disposed between the center point of the light emitting unit and the three vertices of the light emitting unit, and the pixel defining layers between the three sub-pixels in the light emitting unit are respectively a first pixel defining layer L 1 A second pixel defining layer L 2 Third pixel defining layer L 3 To divide the light emitting unit into three sub-pixels having equal light emitting areas; and the included angle between two adjacent pixel defining layers is 120 degrees, so that the arrangement of the repeated units is facilitated, and the number of pixel units in unit area is increased.
Further, as shown in fig. 3, through holes 2000 are formed in the partition layer for dividing the plurality of sub-pixels in the light emitting unit, so that the plurality of sub-pixels in the light emitting unit are mutually communicated through the through holes 2000.
It is understood that the through-hole is a hole penetrating the pixel defining layer, and when ink is deposited in the light emitting unit, the ink can flow into the adjacent sub-pixel region by flowing, and the position and shape of the through-hole are not particularly limited as long as the above-described function can be achieved. Specifically, the opening direction of the through hole is perpendicular to the thickness direction of the pixel defining layer.
According to the pixel arrangement structure, the luminous colors of the plurality of sub-pixels of the same luminous unit are the same, so that the same luminous unit can be manufactured at one time in the preparation process, and the through holes enabling the plurality of sub-pixels of the same luminous unit to be communicated with each other are formed, so that ink can circulate among the sub-pixels, uniformity among the sub-pixels is improved, the occurrence of ink accumulation phenomenon can be avoided to a certain extent, the preparation difficulty is reduced, and meanwhile, the film forming effect of a film is improved.
It should be noted that, the aperture of the through hole can be adjusted according to the actual situation, and only the ink circulation can be maintained, and the aperture is far smaller than the length of the pixel defining layer provided with the through hole. Further, the length of the pixel defining layer with the through holes is L, and the aperture of the through holes is smaller than L/100.
It is understood that the via hole may be formed in the first pixel defining layer L 1 Second pixel defining layer L 2 And a third pixel defining layer L 3 The number of the through holes is not particularly limited. Further, as shown in FIG. 3, a via 2000 is formed in the first pixel defining layer L 1 Second pixel defining layer L 2 And a third pixel defining layer L 3 So that each sub-pixel in the light emitting unit is mutually communicated through the through hole 2000, and the hole center of the through hole 2000 coincides with the center point of the light emitting unit, thereby further improving the uniformity of the film; still further, the number of through holes is 1, i.e., other positions may not be provided with through holes.
It will be appreciated that when a via is formed in a pixel defining layer dividing a plurality of sub-pixels, the pixel defining layer where the via is formed is intermittently divided, and the shape of the sub-pixels of the present invention is not limited.
As shown in fig. 1 and 4, the three light emitting units having different light emitting colors and the same shape of the repeating unit are the first light emitting unit 111, the second light emitting unit 112, and the third light emitting unit 113, respectively. The first light emitting unit 111 is composed of three sub-pixels of the same emission color and the same shape, which are a first sub-pixel 1111, a second sub-pixel 1112, and a third sub-pixel 1113, respectively; the second light emitting unit 112 is composed of three sub-pixels of the same light emitting color and the same shape, which are a first sub-pixel 1121, a second sub-pixel 1122, and a third sub-pixel 1123, respectively; the third light emitting unit 113 is composed of three sub-pixels having the same emission color and the same shape, namely, a first sub-pixel 1131, a second sub-pixel 1132, and a third sub-pixel 1133.
Further, the light emitting areas of the sub-pixels of the respective light emitting units are equal.
Further, as shown in fig. 5, the sub-pixels of each light emitting unit are hexagonal, and are respectively a first side a, a second side b, a third side c, a fourth side d, a fifth side e, and a sixth side f, which are connected end to end in sequence, wherein an included angle between the first side a and the second side b is 120 °, the first side a, the third side c, and the fifth side e are parallel to each other, and the second side b, the fourth side d, and the sixth side f are parallel to each other. Further, the sub-pixels of each light emitting unit are shaped like an L-hexagon.
Further, the ratio of the lengths of the first side a, the third side c and the fifth side e is 1 (1.99-2.01): 0.99-1.01; further, the length of the third side c is equal to the sum of the lengths of the first side a and the fifth side e; further, the ratio of the lengths of the first side a, the third side c and the fifth side e is 1:2:1;
further, the ratio of the lengths of the second side b, the fourth side d and the sixth side f is 1 (1.99-2.01): 0.99-1.01; further, the length of the fourth side d is equal to the sum of the lengths of the second side b and the sixth side f. Further, the ratio of the lengths of the second side b, the fourth side d and the sixth side f is 1:2:1.
Further, the length of the first side a is equal to the length of the second side b to further improve resolution.
It will be appreciated that the term "hexagonal" as used herein does not require a strict sense of hexagonal shape, and refers broadly to a pattern having six sides, and that there may be acceptable errors in the art depending on the manufacturing process, etc.
Further, as shown in fig. 6, the three sub-pixels of the light emitting unit are a first sub-pixel 1131, a second sub-pixel 1132, and a third sub-pixel 1133, respectively;
the six sides of the first sub-pixel 1131 are a first side a, a second side b, a third side c, a fourth side d, a fifth side e and a sixth side f in sequence; six sides of the second subpixel 1132 are, in order, a first side a ", a second side b", a third side c ", a fourth side d", a fifth side e ", and a sixth side f"; the six sides of the third sub-pixel 1133 are a first side a ', a second side b', a third side c ', a fourth side d', a fifth side e ', and a sixth side f' in this order;
wherein the first side a of the first sub-pixel 1131 and the second side b' of the third sub-pixel 1132 are overlapped to form a first pixel defining layer L 1 The method comprises the steps of carrying out a first treatment on the surface of the The second side b of the first sub-pixel 1131 coincides with the first side a "of the second sub-pixel 1132 to form a second pixel defining layer L 2 The method comprises the steps of carrying out a first treatment on the surface of the The first side a' of the third sub-pixel 1133 and the second side b″ of the second sub-pixel overlap to form a third pixelDefinition layer L 3 The method comprises the steps of carrying out a first treatment on the surface of the And the angle between the third side c of the first sub-pixel 1131 and the sixth side f "of the second sub-pixel 1132 is 60 °, the angle between the sixth side f of the first sub-pixel 1131 and the third side c 'of the third sub-pixel 1133 is 60 °, and the angle between the third side c" of the second sub-pixel 1132 and the sixth side f' of the third sub-pixel 1133 is 60 °. The arrangement of the sub-pixels of the other light emitting units is as described above, and will not be described here again.
Further, as shown in fig. 7, the three light emitting units of the repeating unit are a first light emitting unit 111, a second light emitting unit 112 and a third light emitting unit 113, respectively, and each light emitting unit is independently composed of a first sub-pixel, a second sub-pixel and a third sub-pixel, respectively; the second sub-pixel 1112 of the first light emitting unit 111 is adjacent to the third sub-pixel 1123 of the second light emitting unit 112 and the first sub-pixel 1131 of the third light emitting unit 113, and the third side c″ of the second sub-pixel 1112 of the first light emitting unit 111 is arranged in an edge-to-edge manner with the fourth side d of the first sub-pixel 1131 of the third light emitting unit 113, the fourth side d″ of the second sub-pixel 1112 of the first light emitting unit 111 is arranged in an edge-to-edge manner with the third side c 'of the third sub-pixel 1123 of the second light emitting unit 112, and the fourth side d' of the third sub-pixel 1123 of the second light emitting unit 112 is arranged in an edge-to-edge manner with the third side c of the first sub-pixel 1131 of the third light emitting unit 113.
The invention also provides a mask plate assembly, which comprises at least one mask plate, wherein the mask plate is provided with an opening used for forming the light-emitting unit in the repeating unit. The relevant technical features of the pixel arrangement structure are as described above, and will not be described in detail herein.
It can be understood that when the above pixel arrangement structure is prepared, the number of the mask plates is determined according to the shape and the light emitting area of the light emitting units, and when the shape and the light emitting area of each light emitting unit in the repeating unit are the same, one mask plate can be shared, and only the corresponding pixel phase needs to be moved in the preparation process, specifically: forming a light emitting unit of one light emitting color of each repeating unit through one mask plate, and then moving the mask plate to correspond to a light emitting unit position of another light emitting color of each repeating unit to form a light emitting unit of another light emitting color; and so on. When the shape and the light emitting area of each light emitting unit are different, three mask plates with openings can be adopted, and the shape of each opening corresponds to each light emitting unit of the pixel arrangement structure.
It should be noted that, when the shape and the light emitting area of each light emitting unit are the same, as shown in fig. 8 a, three light emitting units with different light emitting colors in the repeating units may be formed by using three masks (the first mask 401, the second mask 402, and the third mask 403) respectively; it is also possible to use one mask plate to prepare three light emitting units with different light emitting colors of the repeating units, and only one pixel phase D is required to be moved for each light emitting unit with one light emitting color, where one pixel phase D is the distance between the center points of two adjacent light emitting units (as shown in fig. 8B), and the present invention should not be construed as being limited.
The embodiment of the invention also provides a display panel which comprises the pixel arrangement structure. The pixel arrangement structure is as described above, and will not be described herein. The display panel may be used in any device having a display function, for example, a computer display screen, a mobile phone screen, a pad, a wristwatch, a game machine display screen, a billboard, and the like, and is not particularly limited herein.
The pixel defining layer is deposited on the substrate and defines pixel pits corresponding to the sub-pixels of the pixel arrangement structure, and the sub-pixels of the pixel arrangement structure are arranged in the corresponding pixel pits to form light emitting units of corresponding light emitting colors. The pixel arrangement structure is the same as that described above, and is not particularly limited herein.
It is understood that the pixel defining layer in the present invention may have a single-layer structure or a multi-layer structure, and only needs to be able to form the pixel arrangement structure, for example: a laminate of a hydrophilic material and a hydrophobic material, etc., to improve the uniformity of film formation of the ink in the pixel pits, is not particularly limited herein.
It is understood that the display panel may further include a substrate, a pixel defining layer, a bottom electrode, a top electrode, etc., where the substrate, the pixel defining layer, the bottom electrode, the top electrode, etc. may be made of materials and arrangements that are conventional in the art according to the need, and are not particularly limited herein.
The invention also provides a method for preparing the pixel arrangement structure, which comprises the following steps:
the invention also provides a method for preparing the display panel, which comprises the following steps:
s101: providing a substrate;
the substrate is a substrate commonly used in the art, such as a glass rigid substrate or a PI flexible substrate, and a driving TFT may be further disposed on the substrate for driving the light emitting element, where the driving TFT includes, but is not limited to, a polysilicon TFT, a metal oxide TFT, and the like, and the driving circuit array may be fabricated on the substrate through a yellow light process.
S102: a patterned bottom electrode is fabricated within each light emitting region of the substrate.
The bottom electrode may be prepared by methods conventional in the art and will not be described in detail herein.
S103: depositing a pixel defining layer on the substrate and defining pixel pits corresponding to the pixel arrangement structure;
the pixel arrangement structure is described above, and will not be described here again.
S104: forming each light emitting unit;
it is to be understood that the step S104 may be performed by masking with a mask plate as shown in fig. 7 a, and the light emitting unit may be formed by a conventional method, which is not particularly limited herein. It will be appreciated that, as described above, the number of the mask plates is related to the shape and the light emitting area of the preformed light emitting units, and the light emitting units with the same shape and light emitting area can be prepared by using the same mask plate, and at this time, after forming the light emitting units with one light emitting color, the mask plate is moved to print the ink with the second light emitting color. The specific deposition method of the ink is not particularly limited, and an existing method such as inkjet printing or the like can be employed.
S105: forming a top electrode;
the top electrode in step S105 may be formed using a conventional method and materials, and is not particularly limited herein.
The preparation method adopts the pixel arrangement structure, the pixel arrangement structure is embedded and arranged in an edge-to-edge mode by adopting the N-sided light-emitting units, the resolution of the display device can be improved, and the M sub-pixels in each light-emitting unit of the pixel arrangement structure can be prepared together because the light-emitting colors of the M sub-pixels are the same, so that the manufacturing difficulty is effectively reduced, the equipment precision requirement is reduced, and meanwhile, the size of each sub-pixel can be effectively reduced, and meanwhile, the ink is ensured not to overflow due to the fact that the pixel area is too small, so that high-resolution display is realized under the same equipment precision.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (11)
1. The pixel arrangement structure is characterized by comprising a repeating unit, wherein the repeating unit is formed by embedding three light-emitting units with different light-emitting colors and the same shape in an edge-to-edge manner, and the light-emitting units are in an N-edge shape;
each light-emitting unit consists of M sub-pixels with the same light-emitting color and the same shape, and in the same repeating unit, one sub-pixel in each light-emitting unit is adjacent to each sub-pixel in the other two adjacent light-emitting units;
wherein N is 12, M is 3;
a pixel defining layer is arranged between the center point of the light emitting unit and three vertexes of the light emitting unit, wherein the pixel defining layers between every two of three sub-pixels in the light emitting unit are respectively a first pixel defining layer, a second pixel defining layer and a third pixel defining layer so as to divide the light emitting unit into three sub-pixels with equal light emitting areas, and an included angle between every two adjacent pixel defining layers is 120 degrees;
the sub-pixels are hexagons, each hexagon is composed of a first side, a second side, a third side, a fourth side, a fifth side and a sixth side which are connected end to end in sequence, an included angle between the first side and the second side is 120 degrees, the first side, the third side and the fifth side are parallel to each other, and the second side, the fourth side and the sixth side are parallel to each other.
2. The pixel arrangement structure according to claim 1, comprising a plurality of the repeating units; the plurality of repeating units are arranged in a side-to-side manner along the row direction and the column direction so that one sub-pixel of one repeating unit is adjacent to each sub-pixel of two light emitting units of an adjacent repeating unit.
3. The pixel arrangement structure according to claim 2, wherein a plurality of the repeating units are sequentially distributed in a row direction, and repeating units of any adjacent two rows are staggered in a column direction; or (b)
The plurality of repeating units are distributed in sequence in the column direction, and the repeating units of any two adjacent columns are distributed in a staggered manner in the row direction.
4. The pixel arrangement according to claim 1, wherein the ratio of the lengths of the first side, the third side and the fifth side is 1 (1.99-2.01): 0.99-1.01, and the ratio of the lengths of the second side, the fourth side and the sixth side is 1 (1.99-2.01): 0.99-1.01.
5. The pixel arrangement according to claim 4, wherein the length of the first side is equal to the length of the second side.
6. The pixel arrangement structure according to claim 1, wherein the three sub-pixels of the light emitting unit are a first sub-pixel, a second sub-pixel, and a third sub-pixel, respectively;
wherein a first edge of the first sub-pixel and a second edge of the third sub-pixel are overlapped to form the first pixel defining layer; the second edge of the first sub-pixel is overlapped with the first edge of the second sub-pixel to form the second pixel defining layer; the first edge of the third sub-pixel and the second edge of the second sub-pixel are overlapped to form the third pixel defining layer; and an included angle between the third side of the first sub-pixel and the sixth side of the second sub-pixel is 60 degrees, an included angle between the sixth side of the first sub-pixel and the third side of the third sub-pixel is 60 degrees, and an included angle between the third side of the second sub-pixel and the sixth side of the third sub-pixel is 60 degrees.
7. The pixel arrangement structure according to claim 6, wherein the three light emitting units of the repeating unit are a first light emitting unit, a second light emitting unit, and a third light emitting unit, respectively, and each light emitting unit is independently composed of a first sub-pixel, a second sub-pixel, and a third sub-pixel, respectively, and the second sub-pixel of the first light emitting unit is adjacent to the third sub-pixel of the second light emitting unit, and the first sub-pixel of the third light emitting unit; and the third side of the second sub-pixel of the first light emitting unit is in edge-to-edge embedded arrangement with the fourth side of the first sub-pixel of the third light emitting unit, the fourth side of the second sub-pixel of the first light emitting unit is in edge-to-edge embedded arrangement with the third side of the third sub-pixel of the second light emitting unit, and the fourth side of the third sub-pixel of the second light emitting unit is in edge-to-edge embedded arrangement with the third side of the first sub-pixel of the third light emitting unit.
8. The pixel arrangement structure according to claim 1, wherein the pixel defining layer is provided with a through hole so that a plurality of sub-pixels in the light emitting unit can be mutually penetrated through the through hole.
9. The pixel arrangement structure according to claim 8, wherein the through hole is opened at an intersection of the first pixel defining layer, the second pixel defining layer, and the third pixel defining layer, and a hole center of the through hole coincides with a center point of the light emitting unit.
10. A mask assembly for manufacturing the pixel arrangement structure according to any one of claims 1 to 9, wherein the mask assembly comprises at least one mask plate, and the mask plate is provided with an opening for forming a light emitting unit in the repeating unit.
11. A display panel comprising the pixel arrangement structure of any one of claims 1-9.
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