CN113314584A - Display panel, mask assembly and display device - Google Patents

Display panel, mask assembly and display device Download PDF

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Publication number
CN113314584A
CN113314584A CN202110710782.8A CN202110710782A CN113314584A CN 113314584 A CN113314584 A CN 113314584A CN 202110710782 A CN202110710782 A CN 202110710782A CN 113314584 A CN113314584 A CN 113314584A
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pixel
color sub
sub
pixels
pixel unit
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Chinese (zh)
Inventor
林爽
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BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
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Priority to CN202110710782.8A priority Critical patent/CN113314584A/en
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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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/04—Coating on selected surface areas, e.g. using masks
    • C23C14/042—Coating on selected surface areas, e.g. using masks using masks
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/12—Organic material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/10—Deposition of organic active material
    • H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
    • H10K71/166—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using selective deposition, e.g. using a mask

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The invention provides a display panel, a mask assembly and a display device. The display panel comprises a plurality of pixel units distributed in an array mode, wherein each pixel unit comprises a first pixel unit and a second pixel unit, the first pixel units are located in odd columns, the second pixel units are located in even columns, the first pixel units and the second pixel units are in central symmetry around a first straight line, each pixel unit comprises two first color sub-pixels, one second color sub-pixel and one third color sub-pixel, and the two first color sub-pixels share the one second color sub-pixel and the one third color sub-pixel to form two sub-pixel units. Therefore, by utilizing the sub-pixel borrowing principle, the second color sub-pixel and the third color sub-pixel in each pixel unit in the display panel are shared by the two first color sub-pixels, so that the resolution can be effectively improved, partial picture loss caused by less sub-pixels can be effectively compensated, and the display effect can be improved.

Description

Display panel, mask assembly and display device
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a mask assembly for manufacturing sub-pixels in the display panel and a display device.
Background
Due to the characteristics of wide color gamut, high response speed, wide viewing angle, flexibility and the like, the OLED display technology enables the market share of the manufactured display devices to be increased rapidly. However, with the rapid development of products in the fields of mobile phones, wearing, VR, etc., and the challenge of micro LED display technology in the future, OLED display devices with higher quality and higher resolution need to be designed and produced. And (3) evaporating the R/G/B (red/green/blue) organic luminescent material on the position of the corresponding color sub-pixel on the array substrate by the luminescent material of each sub-pixel of the OLED through a precise metal mask (FMM). At present, as the resolution of the display device is required to be higher, the requirements for the pixel arrangement structure and the precise metal mask for forming the light emitting layer are also higher. However, for the OLED with high resolution, a Fine Metal Mask (FMM) is one of the key technologies that restrict the development of the FMM, and the FMM for vapor deposition is more difficult to manufacture as the pixel density (ppi) is increased, and the probability of poor color mixing is increased as the distance between the sub-pixel light emitting regions is decreased due to the increase of ppi.
Therefore, research on display panels is awaited.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a display panel that can facilitate the fabrication of a high resolution display panel or the fabrication of an FMM for evaporating a light emitting layer in the display panel.
In one aspect of the present invention, a display panel is provided. According to an embodiment of the present invention, the display panel includes a plurality of pixel units arranged in an array, the pixel units include a first pixel unit and a second pixel unit, the first pixel unit is located in an odd-numbered column, the second pixel unit is located in an even-numbered column, or the first pixel unit is located in an even-numbered column, the second pixel unit is located in an odd-numbered column, and the first pixel unit and the second pixel unit are in central symmetry with respect to a first straight line, wherein the pixel unit includes two first-color sub-pixels, one second-color sub-pixel and one third-color sub-pixel, and two first-color sub-pixels share one second-color sub-pixel and one third-color sub-pixel to form two sub-pixel units. Therefore, by utilizing the Sub-Pixel borrowing principle, the second color Sub-Pixel and the third color Sub-Pixel in each Pixel unit of the display panel are shared by the two first color Sub-pixels (Sub-Pixel Rendering (SPR) technology), so that the resolution can be effectively improved, partial picture loss caused by less Sub-pixels can be effectively compensated, and the display effect can be improved.
According to an embodiment of the present invention, the first pixel unit has an inverted triangle shape, and the second pixel unit has a regular triangle shape.
According to the embodiment of the present invention, two first color sub-pixels and one third color sub-pixel in the same pixel unit are respectively located at three corners of a triangle.
According to the embodiment of the invention, in the pixel units in the same row, one first color sub-pixel in the first pixel unit and a third color sub-pixel in the second pixel unit are adjacently arranged.
According to the embodiment of the present invention, in the pixel units located in the same row, the connection line of the geometric centers of all the second color sub-pixels is a first fold line, the connection line of the geometric centers of all the third color sub-pixels is a second fold line, and the first fold line and the second fold line intersect.
According to an embodiment of the present invention, in two pixel units located in the same row, a connection line between a geometric center of one of the first color sub-pixels and a geometric center of the second color sub-pixel is defined as a first connection line, and in the second pixel unit, a connection line between a geometric center of one of the first color sub-pixels and a geometric center of the second color sub-pixel is defined as a second connection line, and a connection line between a geometric center of the other of the first color sub-pixels and a geometric center of the second color sub-pixel is defined as a third connection line, where the first connection line and the second connection line are parallel to each other, and the first connection line intersects the third connection line.
According to an embodiment of the present invention, in two pixel units located in the same row, a connection line between a geometric center of one of the first color sub-pixels and a geometric center of the third color sub-pixel in the first pixel unit is defined as a fourth connection line, and in the second pixel unit, a connection line between a geometric center of one of the first color sub-pixels and a geometric center of the third color sub-pixel is defined as a fifth connection line, and a connection line between a geometric center of the other first color sub-pixel and a geometric center of the third color sub-pixel is defined as a sixth connection line, where the fourth connection line and the fifth connection line are parallel to each other, and the fourth connection line intersects the sixth connection line.
According to the embodiment of the invention, the projections of the first pixel unit and the second pixel unit which are adjacent to each other in the same row in the column direction at least partially overlap.
According to the embodiment of the present invention, one of the first color sub-pixels in the second pixel unit in the ith row and the jth column is disposed adjacent to one of the first color sub-pixels in the first sub-pixel unit in the (i + 1) th row and the jth-1 column, and another one of the first color sub-pixels in the second pixel unit in the ith row and the jth column is disposed adjacent to the first color sub-pixel in the first sub-pixel unit in the (i + 1) th row and the jth +1 column, wherein i is a positive integer greater than or equal to 0, and j is a positive integer greater than or equal to 0 and is an even number.
According to the embodiment of the present invention, the light emitting layer in one of the first color sub-pixels in the second pixel unit of the ith row and jth column is integrated with the light emitting layer in one of the first color sub-pixels in the first sub-pixel unit of the (i + 1) th row and jth-1 column, and the light emitting layer in the other of the first color sub-pixels in the second pixel unit of the ith row and jth column is integrated with the light emitting layer in the first color sub-pixel unit of the (i + 1) th row and jth +1 column.
According to an embodiment of the present invention, the first color sub-pixel, the second color sub-pixel and the third color sub-pixel each have an axis of symmetry.
According to the embodiment of the present invention, the first color sub-pixel, the second color sub-pixel and the third color sub-pixel are each independently a triangle, a quadrangle, a pentagon or a hexagon in shape.
In another aspect of the invention, there is provided a reticle assembly for fabricating a display panel as described above. According to an embodiment of the present invention, the mask assembly includes a first precise metal mask, a second precise metal mask and a third precise metal mask, wherein the first precise metal mask has a plurality of first openings, the first openings are used for forming first color sub-pixels by evaporation, each of the first openings is used for forming one first color sub-pixel by evaporation, the first openings for evaporating the first color sub-pixels in a first pixel unit are defined as first sub-openings, the first openings for evaporating the first color sub-pixels in a second pixel unit are defined as second sub-openings, and the first sub-openings and the second sub-openings are centrosymmetric with respect to a first straight line; the second precise metal mask is provided with a plurality of second openings, the second openings are used for forming second color sub-pixels through evaporation, each second opening forms one second color sub-pixel through evaporation, the second openings used for evaporating the second color sub-pixels in the first pixel unit are defined as third sub-openings, the second openings used for evaporating the second color sub-pixels in the second pixel unit are defined as fourth sub-openings, and the third sub-openings and the fourth sub-openings are in central symmetry with respect to the first straight line; the third precise metal mask is provided with a plurality of third openings, the third openings are used for forming third color sub-pixels through evaporation, each third opening forms one third color sub-pixel through evaporation, the third opening used for evaporating the third color sub-pixels in the first pixel unit is defined as a fifth sub-opening, the third opening used for evaporating the third color sub-pixels in the second pixel unit is defined as a sixth sub-opening, and the fifth sub-opening and the sixth sub-opening are in central symmetry with respect to the first straight line. Therefore, the manufacturing difficulty of the precise metal mask is favorably reduced, the cost is favorably reduced, and meanwhile, the display panel with high resolution can be manufactured.
According to the embodiment of the invention, in the first precise metal mask, two first openings adjacent in the column direction are communicated.
In yet another aspect of the present invention, a display device is provided. According to an embodiment of the present invention, the display panel includes the display panel described above. Thus, the display device has a high resolution. The display device includes all the features and advantages of the display panel described above, and will not be described herein again.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of an arrangement of sub-pixels in a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the arrangement of sub-pixels in a display panel according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of the arrangement of sub-pixels in a display panel according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of the arrangement of sub-pixels in a display panel according to yet another embodiment of the present invention;
FIG. 5 is a schematic diagram of the arrangement of sub-pixels in a display panel according to another embodiment of the present invention;
FIG. 6 is a schematic diagram of the arrangement of sub-pixels in a display panel according to yet another embodiment of the present invention;
FIG. 7 is a schematic diagram of the arrangement of sub-pixels in a display panel according to yet another embodiment of the present invention;
FIG. 8 is a schematic diagram of the arrangement of sub-pixels in a display panel according to yet another embodiment of the present invention;
FIG. 9 is a schematic view of a first precision metal mask according to yet another embodiment of the present invention;
FIG. 10 is a schematic diagram of a second precision metal mask according to yet another embodiment of the present invention;
FIG. 11 is a schematic view of a third exemplary embodiment of a precision metal mask according to the present invention;
FIG. 12 is a schematic view of a first precision metal mask according to another embodiment of the present invention.
Detailed Description
The scheme of the invention will be explained with reference to the examples. It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications.
In one aspect of the present invention, a display panel is provided. According to the embodiment of the present invention, referring to fig. 1, the display panel includes a plurality of pixel units arranged in an array, the pixel units include a first pixel unit 11 and a second pixel unit 12, the first pixel unit 11 is located at an odd column, the second pixel unit 12 is located at an even column (in the figure, the first pixel unit 11 is located at the odd column, the second pixel unit 12 is located at the even column for example), or the first pixel unit is located at the even column, the second pixel unit is located at the odd column, and the first pixel unit 11 and the second pixel unit 12 are in central symmetry with respect to a first line X, wherein the pixel unit includes two first color sub-pixels 21, one second color sub-pixel 22, and one third color sub-pixel 23 (i.e., the number ratio of the first color sub-pixels, the second color sub-pixels, and the third color sub-pixels is 2:1:1 in the whole display panel), two first color sub-pixels 21 share one second color sub-pixel 22 and one third color sub-pixel 23 to constitute two sub-pixel units. Therefore, by utilizing the Sub-Pixel borrowing principle, the second color Sub-Pixel and the third color Sub-Pixel in each Pixel unit of the display panel are shared by the two first color Sub-pixels (Sub-Pixel Rendering (SPR) technology), so that the resolution can be effectively improved, partial picture loss caused by less Sub-pixels can be effectively compensated, and the display effect can be improved.
It should be noted that, referring to fig. 1, the first pixel unit 11 and the second pixel unit 12 are in central symmetry with respect to the first straight line X, and there are two cases of the first straight line X, which is a symmetry axis of the first pixel unit and the second pixel unit in two different adjacent cases, where the first straight line X of the two cases intersects.
According to an embodiment of the present invention, referring to fig. 1, the first pixel unit 11 has an inverted triangle shape, and the second pixel unit 12 has a regular triangle shape. Therefore, the reasonable layout of the pixel units is facilitated, and a greater number of pixel units are arranged in a certain space in sequence, so that the resolution of the display panel is improved. In some embodiments, the projections of the first pixel unit 11 and the second pixel unit 12 located in the same row and adjacent to each other in the column direction at least partially overlap. Therefore, the resolution of the display panel can be further improved, and particularly, when the first pixel unit and the second pixel unit are respectively in an inverted triangle and a regular triangle, as shown in fig. 1, the pixel units can be more closely arranged, and the resolution is improved.
It should be noted that the above-mentioned "regular triangle" is not an equilateral triangle, and the "regular triangle" is referred to as an "inverted triangle". The regular triangle and the inverted triangle can be equilateral triangle, isosceles triangle or irregular triangle, and the technical personnel in the field can design flexibly according to the actual situation.
According to an embodiment of the present invention, referring to fig. 1, two first color sub-pixels 21 and one third color sub-pixel 23 in the same pixel unit are located at three corners of a triangle, respectively. Therefore, the arrangement positions of the four sub-pixels can be better distributed in the triangular pixel unit, the space is more reasonably utilized, and the good display quality of the display panel is ensured.
According to an embodiment of the present invention, referring to fig. 1, in the pixel units located in the same row, one first color sub-pixel 21 in the first pixel unit 11 and the third color sub-pixel 23 in the second pixel unit 12 are adjacently disposed. Thus, the above arrangement can realize a centrosymmetric arrangement of the first pixel unit and the second pixel unit.
According to an embodiment of the present invention, referring to fig. 2, in the pixel units located in the same row, the connection line of the geometric centers of all the second color sub-pixels 22 is a first folding line 221, the connection line of the geometric centers of all the third color sub-pixels 23 is a second folding line 231, and the first folding line 221 and the second folding line 231 intersect. Therefore, reasonable layout of each pixel can be effectively realized, and pixel arrangement density is improved.
According to an embodiment of the present invention, referring to fig. 3, in two pixel units located in the same row, a first line 201 is defined as a connection line between a geometric center of one of the first color sub-pixels 21 and a geometric center of the second color sub-pixel 22 in the first pixel unit 11, and a third line 203 is defined as a connection line between a geometric center of one of the first color sub-pixels 21 and a geometric center of the second color sub-pixel 22 in the second pixel unit 12, wherein the first line 201 and the second line 202 are parallel to each other, and the first line 201 intersects the third line 203. It should be noted that the "intersection" may mean that two connecting lines directly intersect, or may also mean that two connecting lines intersect through an extension line, for example, the intersection of the first connecting line 201 and the third connecting line 203 means that the extension lines of the first connecting line 201 and the third connecting line 203 intersect.
According to an embodiment of the present invention, referring to fig. 4, in two pixel units located in the same row, a line connecting the geometric center of one of the first color sub-pixels 21 and the geometric center of the third color sub-pixel 23 in the first pixel unit 11 is defined as a fourth line 204, and a line connecting the geometric center of one of the first color sub-pixels 21 and the geometric center of the third color sub-pixel 23 in the second pixel unit 12 is defined as a fifth line 204, and a line connecting the geometric center of the other first color sub-pixel 21 and the geometric center of the third color sub-pixel 23 is defined as a sixth line 206, where the fourth line 204 and the fifth line 205 are parallel to each other, and the fourth line 204 intersects the sixth line 206. Similarly, the term "intersect" may mean that two connecting lines directly intersect, or may intersect through an extension line, for example, the fourth connecting line 204 intersects with the sixth connecting line 206, which means that the fourth connecting line 204 intersects with the extension line of the sixth connecting line 206.
According to an embodiment of the present invention, referring to fig. 5, one first color sub-pixel in the second pixel unit in the ith row and jth column is disposed adjacent to one first color sub-pixel in the first sub-pixel unit in the (i + 1) th row and jth column, and another first color sub-pixel in the second pixel unit in the ith row and jth column is disposed adjacent to the first color sub-pixel in the first sub-pixel unit in the (i + 1) th row and jth column (as shown by a dashed box in fig. 5), where i is a positive integer greater than or equal to 0, and j is a positive integer greater than or equal to 0 and an even number. In some embodiments, referring to fig. 6, the light emitting layer in one first color sub-pixel in the second pixel unit in the ith row and the jth column is integrated with the light emitting layer in one first color sub-pixel in the first sub-pixel unit in the (i + 1) th row and the jth-1 column, and the light emitting layer in another first color sub-pixel in the second pixel unit in the ith row and the jth column is integrated with the light emitting layer in the first color sub-pixel in the first sub-pixel unit in the (i + 1) th row and the jth +1 column, so that not only the arrangement of the first color sub-pixels can be better laid out, but also when the two adjacent first color sub-pixels are used for evaporating the light emitting layers, evaporation can be performed through one opening of the FMM, and further the difficulty in manufacturing the FMM can be reduced.
According to an embodiment of the present invention, the first color sub-pixel, the second color sub-pixel and the third color sub-pixel each have an axis of symmetry. Therefore, the manufacturing of the FMM is facilitated, the evaporation of the sub-pixels and the uniformity of light emission of the display panel are facilitated, the arrangement among the sub-pixels is facilitated, and the pixel density is improved.
According to an embodiment of the present invention, the shape of each of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel is independently a triangle (such as an equilateral triangle, or a trapezoid), a quadrilateral (such as a rectangle, a parallelogram, a trapezoid, or a trapezoid), a pentagon (an equilateral pentagon or a trapezoid), or a hexagon (an equilateral hexagon or a trapezoid). Those skilled in the art can flexibly set the specific shapes of the three color sub-pixels according to the actual conditions such as the specific requirements of the aperture ratios (or area ratios) of the different sub-pixels and the arrangement requirements among the sub-pixels.
According to an embodiment of the present invention, the first color sub-pixel is a green sub-pixel, the second color sub-pixel is a blue sub-pixel, and the third color sub-pixel is a red sub-pixel. In some embodiments, referring to fig. 1-6, the aperture ratio of the blue sub-pixel is relatively large, and the ratio of the aperture ratios of the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B is 1:1: 4; in other embodiments, referring to fig. 7, the aperture ratio of the green sub-pixel is greater than that of the red sub-pixel, and the aperture ratio of the red pixel R, the green sub-pixel G, and the blue sub-pixel B is 1:2: 3; referring to fig. 8, the aperture ratio of the red sub-pixel is greater than that of the green sub-pixel, and the aperture ratio of the red pixel R, the green sub-pixel G, and the blue sub-pixel B is 2:1: 3.
In another aspect of the invention, there is provided a reticle assembly for fabricating a display panel as described above. Referring to fig. 9 to 11 (taking the mask assembly for fabricating the sub-pixel in the display panel of fig. 1 to 6 as an example), the mask assembly includes a first precise metal mask 100, a second precise metal mask 200, and a third precise metal mask 300, wherein,
referring to fig. 9, the first precision metal mask 100 has a plurality of first openings 110, the first openings 110 are used for forming first color sub-pixels by evaporation, and each of the first openings 110 is used for forming one first color sub-pixel by evaporation, the first openings 110 used for evaporating the first color sub-pixels in the first pixel unit are defined as first sub-openings 111, the first openings 110 used for evaporating the first color sub-pixels in the second pixel unit are defined as second sub-openings 112, wherein the first sub-openings 111 and the second sub-openings 112 are in central symmetry with respect to a first straight line x.
Referring to fig. 10, the second precision metal mask 200 has a plurality of second openings 220, the second openings 220 are used for forming second color sub-pixels by evaporation, each second opening 220 forms one second color sub-pixel by evaporation, the second openings 220 for evaporating the second color sub-pixels in the first pixel unit are defined as third sub-openings 221, the second openings 220 for evaporating the second color sub-pixels in the second pixel unit are defined as fourth sub-openings 222, and the third sub-openings 221 and the fourth sub-openings 222 are in central symmetry with respect to the first straight line x.
Referring to fig. 11, the third precision metal mask 300 has a plurality of third openings 330, where the third openings are used for forming third color sub-pixels by evaporation, and each third opening 330 is used for forming one third color sub-pixel by evaporation, the third opening 330 used for forming the third color sub-pixel in the first pixel unit by evaporation is defined as a fifth sub-opening 331, and the third opening 330 used for forming the third color sub-pixel in the second pixel unit by evaporation is defined as a sixth sub-opening 332, where the fifth sub-opening and the sixth sub-opening are centrosymmetric with respect to the first straight line x.
According to the embodiment of the invention, the mask assembly is used for evaporating the luminescent material, so that the manufacturing difficulty of the precise metal mask is favorably reduced, the cost is favorably reduced, and meanwhile, a display panel with high resolution can be manufactured.
According to an embodiment of the present invention, referring to fig. 12, in the first precise metal mask 100, two first openings 110 adjacent to each other in the column direction are connected, that is, two first openings 110 adjacent to and closest to each other in the column direction are connected, that is, two first openings for evaporating two first color sub-pixels adjacent to each other in two first sub-pixel units in the column direction are connected. Therefore, the difficulty of fabricating the first precise metal mask 100 can be reduced, and one first color sub-pixel in the second pixel unit in the ith row and the jth column and one first color sub-pixel in the first sub-pixel unit in the (i + 1) th row and the jth-1 column obtained by evaporation are an integral sub-pixel, and the other first color sub-pixel in the second pixel unit in the ith row and the jth column and the first color sub-pixel in the first sub-pixel unit in the (i + 1) th row and the jth +1 column are an integral sub-pixel, as shown in fig. 6.
In yet another aspect of the present invention, a display device is provided. According to an embodiment of the present invention, the display panel includes the display panel described above. Thus, the display device has a high resolution. The display device includes all the features and advantages of the display panel described above, and will not be described herein again.
It will be understood by those skilled in the art that the display panel includes, in addition to the display panel described above, the structures or components necessary for a conventional display panel, such as a substrate (glass or polymer substrate), a pixel circuit structure such as a thin film transistor, an encapsulation film, a color filter, a glass cover plate, and the like.
According to the embodiment of the invention, the specific type of the display device using the display panel has no special requirement, and a person skilled in the art can flexibly select the display device according to actual requirements. In some embodiments, specific types of display devices using the display panel include, but are not limited to, mobile phones, notebooks, ipads, kindle, televisions, and other display devices with display and photographing functions.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (15)

1. A display panel is characterized by comprising a plurality of pixel units arranged in an array, wherein each pixel unit comprises a first pixel unit and a second pixel unit, the first pixel unit is positioned in an odd column, the second pixel unit is positioned in an even column, or the first pixel unit is positioned in the even column, the second pixel unit is positioned in the odd column, and the first pixel unit and the second pixel unit are in central symmetry around a first straight line,
the pixel unit comprises two first color sub-pixels, a second color sub-pixel and a third color sub-pixel, and the two first color sub-pixels share the second color sub-pixel and the third color sub-pixel to form two sub-pixel units.
2. The display panel according to claim 1, wherein the first pixel unit has an inverted triangle shape, and the second pixel unit has a regular triangle shape.
3. The display panel according to claim 2, wherein two of the first color sub-pixels and one of the third color sub-pixels in the same pixel unit are located at three corners of a triangle respectively.
4. The display panel according to any one of claims 1 to 3, wherein in the pixel units in the same row, one first color sub-pixel in the first pixel unit and a third color sub-pixel in the second pixel unit are disposed adjacent to each other.
5. The display panel according to any one of claims 1 to 3, wherein in the pixel units in the same row, the connection line of the geometric centers of all the second color sub-pixels is a first fold line, the connection line of the geometric centers of all the third color sub-pixels is a second fold line, and the first fold line and the second fold line intersect.
6. The display panel according to any of claims 1 to 3, wherein a line connecting a geometric center of one of the first color sub-pixels and a geometric center of the second color sub-pixel in the first pixel unit is defined as a first line, a line connecting a geometric center of one of the first color sub-pixels and a geometric center of the second color sub-pixel in the second pixel unit is defined as a second line, and a line connecting a geometric center of another one of the first color sub-pixels and a geometric center of the second color sub-pixel is defined as a third line,
the first connecting line and the second connecting line are parallel to each other, and the first connecting line and the third connecting line are intersected.
7. The display panel according to any of claims 1 to 3, wherein two of the pixel units in the same row define the first pixel unit, wherein a connection line between a geometric center of one of the first color sub-pixels and a geometric center of the third color sub-pixel is a fourth connection line, and define the second pixel unit, wherein a connection line between a geometric center of one of the first color sub-pixels and a geometric center of the third color sub-pixel is a fifth connection line, and a connection line between a geometric center of the other of the first color sub-pixels and a geometric center of the third color sub-pixel is a sixth connection line,
the fourth connecting line and the fifth connecting line are parallel to each other, and the fourth connecting line and the sixth connecting line are intersected.
8. The display panel according to any one of claims 1 to 3, wherein projections of the first pixel unit and the second pixel unit adjacent to each other in the same row in the column direction at least partially overlap.
9. The panel according to any one of claims 1 to 3, wherein one of the first color sub-pixels in the second pixel unit of the ith row and jth column is disposed adjacent to one of the first color sub-pixels in the first sub-pixel unit of the (i + 1) th row and jth column, and another one of the first color sub-pixels in the second pixel unit of the ith row and jth column is disposed adjacent to the first color sub-pixel in the first sub-pixel unit of the (i + 1) th row and jth column, wherein i is a positive integer greater than or equal to 0, and j is a positive integer greater than or equal to 0 and is an even number.
10. The display panel according to claim 9, wherein the light emitting layer in one of the first color sub-pixels in the second pixel unit of the ith row and jth column is integrated with the light emitting layer in one of the first color sub-pixels in the first sub-pixel unit of the (i + 1) th row and jth column, and the light emitting layer in another one of the first color sub-pixels in the second pixel unit of the ith row and jth column is integrated with the light emitting layer in the first color sub-pixel unit of the (i + 1) th row and jth column.
11. The display panel according to any one of claims 1 to 3, wherein the first color sub-pixel, the second color sub-pixel and the third color sub-pixel each have an axis of symmetry.
12. The display panel according to any one of claims 1 to 3, wherein the first color sub-pixel, the second color sub-pixel and the third color sub-pixel are each independently triangular, quadrilateral, pentagonal or hexagonal in shape.
13. A mask assembly for manufacturing the display panel according to any one of claims 1 to 12, comprising a first precision metal mask, a second precision metal mask and a third precision metal mask,
the first precise metal mask is provided with a plurality of first openings, the first openings are used for forming first color sub-pixels through evaporation, each first opening forms one first color sub-pixel through evaporation, the first openings used for evaporating the first color sub-pixels in a first pixel unit are defined as first sub-openings, the first openings used for evaporating the first color sub-pixels in a second pixel unit are defined as second sub-openings, and the first sub-openings and the second sub-openings are in central symmetry about a first straight line;
the second precise metal mask is provided with a plurality of second openings, the second openings are used for forming second color sub-pixels through evaporation, each second opening forms one second color sub-pixel through evaporation, the second openings used for evaporating the second color sub-pixels in the first pixel unit are defined as third sub-openings, the second openings used for evaporating the second color sub-pixels in the second pixel unit are defined as fourth sub-openings, and the third sub-openings and the fourth sub-openings are in central symmetry with respect to the first straight line;
the third precise metal mask is provided with a plurality of third openings, the third openings are used for forming third color sub-pixels through evaporation, each third opening forms one third color sub-pixel through evaporation, the third openings used for evaporating the third color sub-pixels in the first pixel unit are defined as fifth sub-openings, the third openings used for evaporating the third color sub-pixels in the second pixel unit are defined as sixth sub-openings, and the fifth sub-openings and the sixth sub-openings are in central symmetry with respect to the first straight line.
14. The reticle assembly of claim 13, wherein two of the first openings adjacent in a column direction are disposed in communication in the first precision metal reticle.
15. A display device comprising the display panel according to any one of claims 1 to 12.
CN202110710782.8A 2021-06-25 2021-06-25 Display panel, mask assembly and display device Pending CN113314584A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114420739A (en) * 2022-01-25 2022-04-29 合肥京东方光电科技有限公司 Pixel structure, display panel and display device
WO2023092651A1 (en) * 2021-11-24 2023-06-01 武汉华星光电半导体显示技术有限公司 Display panel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023092651A1 (en) * 2021-11-24 2023-06-01 武汉华星光电半导体显示技术有限公司 Display panel
CN114420739A (en) * 2022-01-25 2022-04-29 合肥京东方光电科技有限公司 Pixel structure, display panel and display device

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