CN111969009B - Display panel and mask plate set - Google Patents

Display panel and mask plate set Download PDF

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Publication number
CN111969009B
CN111969009B CN202010753368.0A CN202010753368A CN111969009B CN 111969009 B CN111969009 B CN 111969009B CN 202010753368 A CN202010753368 A CN 202010753368A CN 111969009 B CN111969009 B CN 111969009B
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Prior art keywords
sub
pixel
pixels
display panel
adjacent
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CN111969009A (en
Inventor
冯宏庆
李洪瑞
陈凡
康梦华
盖翠丽
丁立薇
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Hefei Visionox Technology Co Ltd
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Hefei Visionox Technology Co Ltd
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Priority to CN202010753368.0A priority Critical patent/CN111969009B/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
    • 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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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The application provides a display panel and mask plate group, display panel includes: a plurality of sub-pixels of different emission colors arranged in a first direction and a second direction intersecting each other; wherein the adjacent four sub-pixels of different light emission colors form a pixel unit, and the four sub-pixels of different light emission colors are sequentially arranged in the first direction; and the sub-pixels with the same luminous color in the adjacent three pixel units respectively arranged in the first direction and the second direction form a triangle with acute internal angles. By means of the method, the distance between the sub-pixels with the same luminous color in the adjacent three pixel units is relatively short, and therefore support is provided for borrowing light among the sub-pixels with the same luminous color.

Description

Display panel and mask plate set
Technical Field
The application belongs to the technical field of display, and particularly relates to a display panel and a mask plate group.
Background
In recent years, OLED display panels are receiving more and more attention because of their advantages of self-luminescence, low power consumption, high brightness, high response speed, and the like. At present, the pixel arrangement mode in the OLED display panel has the problems of larger current density, shorter service life and larger power consumption of each sub-pixel.
Disclosure of Invention
The application provides a display panel and mask plate group, which can enable the distance between sub-pixels with the same luminous color in adjacent three pixel units to be relatively close, thereby providing support for borrowing light among the sub-pixels with the same luminous color.
In order to solve the technical problems, one technical scheme adopted by the application is as follows: provided is a display panel including: a plurality of sub-pixels of different emission colors arranged in a first direction and a second direction intersecting each other; wherein the adjacent four sub-pixels of different light emission colors form a pixel unit, and the four sub-pixels of different light emission colors are sequentially arranged in the first direction; and the sub-pixels with the same luminous color in the adjacent three pixel units respectively arranged in the first direction and the second direction form a triangle with acute internal angles.
In order to solve the above problems, another technical scheme adopted in the application is as follows: provided is a mask set including: and a plurality of masks for manufacturing the pixel units in the display panel described in any of the above embodiments.
In the prior art case of distinguishing, the beneficial effect of this application is: the display panel comprises a plurality of sub-pixels with different luminous colors, wherein the sub-pixels are arranged along a first direction and a second direction which are crossed; wherein, adjacent four sub-pixels with different luminous colors can form a pixel unit; in the first direction, the sub-pixels of four different light emitting colors are sequentially arranged, and the sub-pixels of the same light emitting color in the adjacent three pixel units respectively arranged in the first direction and the second direction form a triangle with an acute interior angle. The design mode can enable the distances among the three sub-pixels with the same luminous color on the triangle to be close, when one of the sub-pixels on the triangle emits light, the other two sub-pixels with the same luminous color on the triangle can emit light together, so that the current density of each sub-pixel in the process of emitting light can be reduced, the service life of the display panel can be prolonged, and the power consumption can be reduced.
In addition, the arrangement mode of the sub-pixels in the display panel provided by the application can realize two display modes of Real RGBW and SPR RGBW, and can be specifically selected according to actual application scenes.
Further, when the light emitting materials in the white sub-pixels in the display panel are formed by stacking the light emitting materials in the red sub-pixels, the green sub-pixels and the blue sub-pixels in the vertical direction, the adjacent sub-pixels with the same light emitting color can correspond to the same opening on the mask plate, namely, when the red sub-pixels, the green sub-pixels and the blue sub-pixels are evaporated, the openings of the mask plate respectively corresponding to the sub-pixels cover the sub-pixels and the adjacent white sub-pixels, the evaporation of the white sub-pixels is completed when the evaporation of the red sub-pixels, the green sub-pixels and the blue sub-pixels is completed, the evaporation efficiency is higher, and the mask plate corresponding to the extra white sub-pixels is not introduced, so that the preparation cost can be reduced.
Drawings
For a clearer description of the technical solutions in the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a schematic structural diagram of an embodiment of a display panel of the present application;
fig. 2 is a schematic structural diagram of one embodiment of one of the reticles in the reticle set of the present application.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a display panel of the present application. The display panel 10 may be an OLED display panel, and a display device such as a mobile phone, a tablet, a computer, etc. may be formed by the display panel 10. The display panel 10 specifically includes: a plurality of sub-pixels 100 of different emission colors arranged in the first direction X and the second direction Y crossing each other; preferably, the first direction X and the second direction Y are perpendicular to each other, and the design manner can make the arrangement of the sub-pixels 100 in the display panel 10 more regular, and the manufacturing process is easier. The adjacent four sub-pixels 100 with different emission colors form a pixel unit 20, and the adjacent four sub-pixels 100 with different emission colors in the pixel unit 20 may be all arranged along the first direction X, or all arranged along the second direction Y, or may be respectively arranged along the first direction X and the second direction Y, and the specific configuration of the pixel unit 20 will be described later. In the first direction X, the four sub-pixels 100 with different light emission colors are sequentially arranged, and the sub-pixels 100 with the same light emission color in the adjacent three pixel units 20 respectively arranged in the first direction X and the second direction Y form a triangle with acute internal angles, and the angles of the internal angles of the acute triangle can be changed according to practical situations.
The above design manner can make the distances between the three sub-pixels 100 with the same light emitting color on the triangle approach, when one of the sub-pixels 100 on the triangle emits light, the other two sub-pixels 100 with the same light emitting color on the triangle emit light together, so as to reduce the current density of each sub-pixel 100 when emitting light, thereby being beneficial to prolonging the service life of the display panel 10 and reducing the power consumption. In particular, the SPR algorithm which is relatively mature at present can be adopted.
Preferably, the triangle formed by the sub-pixels 100 with the same emission color in the adjacent three pixel units 20 arranged in the first direction X and the second direction Y is an isosceles triangle, and the three sub-pixels 100 with the same emission color located on the vertex of the isosceles triangle are cooperatively emitted. The isosceles triangle design can make the distances among three sub-pixels 100 on the triangle more approximate, and the efficiency of the utilized SPR algorithm is higher.
For example, as shown by a broken-line triangle in fig. 1, the sub-pixels 100 having the same emission color among the adjacent three pixel units 20 arranged in the first direction X and the second direction Y, respectively, include a red sub-pixel R; when one of the pixel units 20 is used as the red sub-pixel R 1 The target chromaticity required to be achieved is R 0 In this case, adjacent red subpixels R on the same triangle can be made 2 、R 3 The emission of the three red subpixels R together may follow the following formula: r is R 0 ＝w 1 *R 1 +w 2 *R 2 +w 3 *R 3 Wherein w is 1 、w 2 、w 3 The value of the light-emitting proportion is 0-100%; for example, w 1 20%, w 2 20%, w 3 60%. Of course, the adjustment may be made according to the visual effect. The above-described manner may be adopted for the sub-pixels 100 of other colors.
Further, referring to fig. 1 again, in the second direction Y, every two sub-pixels 100 with different emission colors are sequentially arranged. The design mode expresses the concept of dislocation arrangement, and the specific dislocation mode can be shown by solid arrows in fig. 1. Specifically, in the second direction Y, the N-th row of sub-pixels 100 extending along the first direction X and the n+1th row of sub-pixels 100 are arranged in a staggered manner, and the amount of the staggered arrangement is greater than 1 sub-pixel 100 and less than 3 sub-pixels 100. Preferably, the amount of misalignment is 2 sub-pixels 100. The above design manner can make the adjacent sub-pixels 100 have different light emitting colors in the first direction X and the second direction Y, so that the display effect of the display panel 10 is better, and the display is more uniform during the image display.
In one embodiment, referring again to fig. 1, the four sub-pixels 100 of different light emission colors sequentially arranged in the first direction X are a first sub-pixel 100a, a second sub-pixel 100b, a third sub-pixel 100c, and a white sub-pixel 100d, respectively; when the pixel unit 20 emits light, at least part of the brightness of the pixel unit 20 is provided by the white sub-pixel 100d, and at least part of the color of the pixel unit 20 is provided by the first sub-pixel 100a, the second sub-pixel 100b and the third sub-pixel 100 c. For example, when the driving chip connected to the display panel receives the display signal, the luminance signal and the chrominance signal in the display signal are distinguished, and most of the corresponding luminance signal is provided by the white sub-pixel 100d when the pixel unit 20 emits light, and the chrominance signal is provided by the first sub-pixel 100a, the second sub-pixel 100b and the third sub-pixel 100 c. In some cases, when the pixel unit 20 needs to display white, the white sub-pixel 100d in the pixel unit 20 may be directly turned on, and the other sub-pixels 100 may be in a non-turned-on state. By the above design, the display power consumption of the display panel 10 can be greatly reduced, and the light emitting lifetime of the sub-pixel 100 can be prolonged.
Preferably, one of the first sub-pixel 100a, the second sub-pixel 100B and the third sub-pixel 100c is a red sub-pixel R, one is a green sub-pixel G and the other is a blue sub-pixel B. In the first direction X, the green sub-pixel G, the blue sub-pixel B, the red sub-pixel R, and the white sub-pixel W may be sequentially arranged in this order; of course, in other embodiments, the arrangement of the sub-pixels 100 of the four colors may be other, which is not limited in this application.
In addition, for the display panel 10 of the above arrangement, the same sub-pixel 100 and surrounding sub-pixels 100 having the same light emitting color may form a plurality of triangles, and the specific common light emission with the sub-pixel 100 on which triangle may be determined according to the white sub-pixel W and the center of the triangle. Preferably, the white sub-pixel W on which triangle is close to the center distance of the triangle is selected to emit light together with the white sub-pixel W on which triangle. For example, for the red subpixel R in FIG. 1 1 In other words, it can be combined with the surrounding red subpixel R 2 And red subpixel R 4 Forming an acute triangle which can also be matched with the surrounding red sub-pixel R 2 And red subpixel R 3 Forming an acute triangle. For display effect, it may be selected to be the red subpixel R 2 And red subpixel R 3 And emits light together.
Further, the light emitting substance in the above-described white sub-pixel 100d/W is formed by stacking the light emitting substances in the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B in the light emission normal direction of the pixel unit 20. The design mode can enable the adjacent sub-pixels 100 with the same luminous color to correspond to the same opening on the mask, namely, when the red sub-pixel R, the green sub-pixel G and the blue sub-pixel B are evaporated, the openings of the mask corresponding to the sub-pixels not only cover the sub-pixels, but also cover the adjacent white sub-pixels W, the evaporation of the white sub-pixels W is finished when the evaporation of the red sub-pixels R, the green sub-pixels G and the blue sub-pixels B is finished, the evaporation efficiency is higher, and the mask corresponding to the extra white sub-pixels W is not introduced, so that the preparation cost can be reduced.
Further, in the present embodiment, the pixel unit 20 constituted by the sub-pixels 100 of adjacent four different emission colors has portions arranged in the first direction X and/or the second direction Y. For example, four sub-pixels 100 in the pixel unit 20 are arranged in a field shape; for another example, four word pixels 100 in the pixel unit 20 are arranged in an L-shaped or T-shaped arrangement. The design mode can enable the display effect to be uniform.
In one application scenario, as indicated by the dashed box in fig. 1, the sub-pixel 100 in the pixel unit 20 is the same as the adjacent pixel unit 20 in the first direction X after mirror symmetry about the first direction X. In this design, the sub-pixel structures of two adjacent pixel units 20 in the first direction X are different, and four sub-pixels in the pixel units 20 are arranged in a field shape, and are arranged in Real RGBW, that is, no pixel is shared before the adjacent pixel units 20. The display driving mode corresponding to the design mode of the pixel unit 20 is simpler and easier in the preparation process.
In another application scenario, for the same arrangement of sub-pixels 100 in fig. 1, other forms of pixel units 20a may be formed; for example, as shown in the solid line box in fig. 1, four sub-pixels 100 in the pixel unit 20a are arranged in a T shape, and at least one sub-pixel 100 is shared between adjacent pixel units 20 a. In this design, the pixel units 20a adopt the SPR RGBW pixel arrangement mode, and the above-mentioned sharing mode of the sub-pixels 100 can enable the display panel 10 with a unit area to accommodate more pixel units 20a, so that the pixel units 20a are arranged more tightly, and the display effect of the display panel 10 is enhanced. Of course, in other embodiments, other forms of SPR RGBW pixel arrangements may be used, for example, four word pixels 100 in the pixel units 20a are arranged in a delta shape, and two sub-pixels 100 in the same direction are shared between two adjacent pixel units 20 a.
In this embodiment, for the same display panel 10, at least two driving modes may be built in the corresponding driving chip, where one driving mode corresponds to the Real RGBW arrangement mode and the other driving mode corresponds to the SPR RGBW pixel arrangement mode; in general, the Real RGBW arrangement is suitable for low PPI applications, the SPR RGBW pixel arrangement is suitable for high PPI applications, and what driving method is specifically adopted may be selected according to practical applications. For example, if some game use scenes require high rendering effect, a driving mode corresponding to an SPR RGBW arrangement mode can be selected; for displaying some engineering drawings, characters and other application scenes, a driving mode corresponding to the Real RGBW pixel arrangement mode can be selected.
Referring to fig. 2, fig. 2 is a schematic structural diagram of one embodiment of one of the reticles in the reticle set of the present application. The mask set includes a plurality of masks 30 for the preparation of the sub-pixels 100 of different luminescent colors in fig. 1.
In one embodiment, referring again to fig. 1, the sub-pixel 100 in the display panel 10 includes a red sub-pixel R, a green sub-pixel G, a blue sub-pixel B and a white sub-pixel W, and the light-emitting substance in the white sub-pixel W is formed by stacking the light-emitting substances in the red sub-pixel R, the green sub-pixel G and the blue sub-pixel B in a vertical direction (i.e., in a direction of a light emission normal of the white sub-pixel W). The mask set comprises three masks 30, which are respectively used for evaporating red luminescent substances, green luminescent substances and blue luminescent substances; wherein, each mask 30 is provided with a plurality of openings 300, and the adjacent sub-pixels 100 having the same color luminescent material correspond to the same opening 300 on the mask 30. That is, when the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B are vapor-deposited, the openings of the mask plates 30 corresponding to the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B not only cover the sub-pixel itself, but also cover the adjacent white sub-pixel W, and vapor deposition of the white sub-pixel W is completed when vapor deposition of the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B is completed. In addition, the design method not only reduces the manufacturing process requirement of the mask 30, but also reduces the alignment difficulty of the mask 30 and reduces the occurrence probability of color mixing.
For example, as shown in fig. 2, the mask 30 in fig. 2 is mainly used for evaporating the green luminescent material in the display panel 10 in fig. 1, and the green sub-pixel G having the green luminescent material and the white sub-pixel W adjacent thereto share the same opening 300. Of course, the structure of the mask 30 for evaporating the blue light-emitting substance and the red light-emitting substance is similar to that of fig. 2, and will not be described again.
Of course, in other embodiments, a plurality of openings 300 may be disposed on each mask 30, and two adjacent openings 300 on the mask 30 are respectively corresponding to the adjacent sub-pixels 100 having the same color luminescent material. That is, one opening 300 in fig. 2 may be split into two independent openings according to the positions of the white and green sub-pixels W and G at their corresponding positions. The foregoing description is only exemplary embodiments of the present application and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the present application.

Claims (10)

1. A display panel, comprising:
a plurality of sub-pixels of different emission colors arranged in a first direction and a second direction intersecting each other;
wherein the adjacent four sub-pixels of different light emission colors form a pixel unit, and the four sub-pixels of different light emission colors are sequentially arranged in the first direction; sub-pixels with the same luminous color in adjacent three pixel units which are respectively arranged in the first direction and the second direction form a triangle with acute internal angles;
the triangle is an isosceles triangle, and the three sub-pixels with the same luminous color on the vertex of the isosceles triangle are matched to emit light.
2. The display panel of claim 1, wherein the display panel comprises,
in the second direction, the sub-pixels of each two different emission colors are sequentially arranged.
3. The display panel of claim 2, wherein the display panel comprises,
the first direction is perpendicular to the second direction.
4. The display panel of claim 1, wherein the display panel comprises,
the sub-pixels of four different light emission colors periodically arranged in the first direction are a first sub-pixel, a second sub-pixel, a third sub-pixel, and a white sub-pixel, respectively.
5. The display panel of claim 4, wherein the display panel comprises,
the first sub-pixel, the second sub-pixel and the third sub-pixel are respectively a red sub-pixel, a green sub-pixel and a blue sub-pixel, and luminescent materials in the white sub-pixel are formed by stacking luminescent materials in the red sub-pixel, the green sub-pixel and the blue sub-pixel in the direction of the luminous normal line of the pixel unit.
6. The display panel of claim 5, wherein the display panel comprises,
the pixel unit constituted by the sub-pixels of adjacent four different light emission colors has portions arranged in the first direction and/or the second direction.
7. The display panel of claim 6, wherein the display panel comprises,
the sub-pixels in the pixel units are identical to the pixel units adjacent to each other in the first direction after mirror symmetry with the first direction as a center.
8. The display panel of claim 6, wherein the display panel comprises,
four sub-pixels in the pixel units are distributed in a T shape, and at least one sub-pixel is shared between every two adjacent pixel units.
9. A reticle set, comprising:
a plurality of reticles for use in fabricating pixel cells in a display panel according to any one of claims 1-8.
10. The reticle set of claim 9, wherein,
the mask set comprises three masks which are respectively used for evaporating red luminescent substances, green luminescent substances and blue luminescent substances; and each mask plate is provided with a plurality of openings, and the sub-pixels of the luminous substances which are adjacent and have the same luminous color correspond to the same opening on the mask plate.
CN202010753368.0A 2020-07-30 2020-07-30 Display panel and mask plate set Active CN111969009B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN111969009B true CN111969009B (en) 2024-03-15

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105789254A (en) * 2016-01-27 2016-07-20 深圳市华星光电技术有限公司 AMOLED pixel structure and manufacturing method of AMOLED light-emitting layer
CN109584794A (en) * 2019-01-25 2019-04-05 京东方科技集团股份有限公司 A kind of display panel and display device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7710022B2 (en) * 2006-01-27 2010-05-04 Global Oled Technology Llc EL device having improved power distribution

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105789254A (en) * 2016-01-27 2016-07-20 深圳市华星光电技术有限公司 AMOLED pixel structure and manufacturing method of AMOLED light-emitting layer
CN109584794A (en) * 2019-01-25 2019-04-05 京东方科技集团股份有限公司 A kind of display panel and display device

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