WO2016169387A1 - 像素结构、掩膜板、有机电致发光显示面板及显示装置 - Google Patents

像素结构、掩膜板、有机电致发光显示面板及显示装置 Download PDF

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WO2016169387A1
WO2016169387A1 PCT/CN2016/077322 CN2016077322W WO2016169387A1 WO 2016169387 A1 WO2016169387 A1 WO 2016169387A1 CN 2016077322 W CN2016077322 W CN 2016077322W WO 2016169387 A1 WO2016169387 A1 WO 2016169387A1
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sub
pixel
pixels
color
mask
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PCT/CN2016/077322
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English (en)
French (fr)
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郭坤
王彦青
张博
陈飞
冯建斌
杨凡
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京东方科技集团股份有限公司
鄂尔多斯市源盛光电有限责任公司
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Priority to US15/320,703 priority Critical patent/US10211261B2/en
Publication of WO2016169387A1 publication Critical patent/WO2016169387A1/zh

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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
    • H10K59/351—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
    • 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
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a pixel structure, a mask, an organic electroluminescence display panel, and a display device.
  • OLED organic electroluminescence display
  • the arrangement of the OLED illuminating pixels generally adopts an RGB strip arrangement similar to that of the LCD, that is, the RGB sub-pixels adopt a collocated pixel arrangement manner, as shown in FIG. 1 .
  • the high-precision metal mask (FMM) technology is mainly used, that is, when the organic luminescent material in the RGB is vapor-deposited, the shielding effect of the occlusion region of the reticle is utilized.
  • the other two corresponding sub-pixels are shielded, and then the other two organic light-emitting materials are sequentially evaporated by using a high-precision alignment system moving the mask or the substrate.
  • this arrangement requires that the opening of the mask used for vapor deposition of the organic light-emitting material and the connection bridge are very small. Therefore, not only the processing of the mask is very difficult, but also the alignment accuracy of the mask. Factors such as mask shadow and mask deformation will seriously affect the evaporation of the organic light-emitting material to form a fine colored pixel pattern.
  • the embodiments of the present invention provide a pixel structure, a mask, an organic electroluminescence display panel, and a display device, which can reduce the processing difficulty of the evaporation opening of the mask and the manufacturing process requirements of the display panel, and can also Improve the resolution of the display panel.
  • an embodiment of the present invention provides a pixel structure, including: a plurality of pixel units arranged in an array, each of the pixel units including four sub-pixels arranged diagonally and having the same shape and size;
  • the colors of the four sub-pixels in each pixel unit are different from each other;
  • the two adjacent sub-pixels have the same color.
  • each pixel unit is respectively a first sub-pixel of a first color, a second sub-pixel of a second color,
  • the third sub-pixel of the third color, the fourth sub-pixel of the fourth color, the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel are arranged in the following manner in a clockwise direction or a counterclockwise direction One of them is arranged:
  • a first sub-pixel a third sub-pixel, a second sub-pixel, and a fourth sub-pixel
  • a first sub-pixel a third sub-pixel, a fourth sub-pixel, and a second sub-pixel;
  • a first sub-pixel a fourth sub-pixel, a third sub-pixel, and a second sub-pixel.
  • each of the first color, the second color, the third color, and the fourth color is from red, green, and blue. And the color selected in white and the first color, the second color, the third color, and the fourth color are different from each other.
  • the shape of the sub-pixel is one of a square, a rectangle, and a diamond.
  • the embodiment of the invention further provides a mask comprising: a mask body and a plurality of vapor deposition openings disposed on the mask body, wherein the plurality of vapor deposition openings are aligned and each steamed
  • the plated opening corresponds to a pattern of sub-pixels of the same color in the above-described pixel structure provided by the embodiment of the present invention.
  • the embodiment of the present invention further provides a mask comprising: a mask body and a plurality of vapor deposition openings disposed on the mask body, wherein the plurality of vapor deposition openings are staggered and each steamed
  • the plated opening corresponds to a pattern of sub-pixels of the same color in the above-described pixel structure provided by the embodiment of the present invention.
  • the embodiment of the invention further provides an organic electroluminescent display panel, which comprises the above pixel structure provided by the embodiment of the invention.
  • the embodiment of the invention further provides a display device comprising the above-mentioned organic electroluminescent display panel provided by the embodiment of the invention.
  • the pixel structure includes: a plurality of pixel units arranged in an array, each of the pixel units including diagonally arranged and shaped Four sub-pixels of the same size; wherein the colors of the four sub-pixels in each pixel unit are different from each other; of any two adjacent pixel units, the two sub-pixels adjacent to each other have the same color.
  • the foregoing pixel structure provided by the embodiment of the present invention may cause the color of any one of the sub-pixels in one pixel unit to be three sub-pixels respectively located in the other three pixel units adjacent to the pixel unit and symmetric with respect to the sub-pixel.
  • the colors are the same. Therefore, one mask opening can be used to simultaneously vaporize the organic light-emitting materials of the four sub-pixels of the same color. In this way, the processing difficulty of the vapor deposition opening of the mask and the manufacturing process requirements of the display panel can be reduced, the product yield can be improved, and the resolution of the display panel can be improved.
  • FIG. 1 is a schematic diagram of a pixel structure in the prior art
  • FIG. 2a is a schematic diagram of a pixel structure according to an embodiment of the present invention.
  • 2b is a second schematic diagram of a pixel structure according to an embodiment of the present invention.
  • 2c is a third schematic diagram of a pixel structure according to an embodiment of the present invention.
  • 3a and 3b are schematic diagrams showing sub-pixels of different arrangement modes in a pixel unit according to an embodiment of the present invention
  • 4a is a fourth schematic diagram of a pixel structure according to an embodiment of the present invention.
  • 4b is a fifth schematic diagram of a pixel structure according to an embodiment of the present invention.
  • 5a to 5c are schematic diagrams showing the arrangement of vapor deposition openings of a mask according to an embodiment of the present invention.
  • Embodiments of the present invention provide a pixel structure, as shown in FIGS. 2a to 2c.
  • the pixel structure includes a plurality of pixel units arranged in an array (marked by solid line frames in FIGS. 2a to 2c), each of the pixel units including four sub-pixels arranged diagonally and having the same shape and size (FIGS. 2a to 2c) Take the "Tian" structure as an example; among them,
  • the colors of the four sub-pixels in each pixel unit are different from each other (the color of the four sub-pixels in FIG. 2a to FIG. 2c is red R, blue B, green G, white W, respectively);
  • the two adjacent sub-pixels have the same color (marked by the dotted line in Fig. 2a).
  • the “two sub-pixels adjacent to each other” referred to herein include two sub-pixels adjacent to each other or two sub-pixels adjacent to each other, and the two sub-pixels are respectively located at two adjacent pixels.
  • the sub-pixels indicated by the dashed box are merely examples, and the "two sub-pixels adjacent to each other" are not limited to the sub-pixels at the dotted frame.
  • 2a is only schematically marked with two pairs of adjacent sub-pixels, a pair of W sub-pixels and a pair of R sub-pixels, and two other sub-pixels located adjacent to each other in adjacent pixel units.
  • the pixels also need to meet the same color.
  • the shape and color of the sub-pixels used in the pixel structure provided by the embodiments of the present invention may be any suitable shape and color, and are not limited to the shape and shape of the sub-pixels shown in FIGS. 2a to 2c. colour.
  • other pixel structures may be employed as long as the colors of the four sub-pixels that are diagonally arranged in the same pixel unit are different from each other and are adjacent in any two adjacent pixel units.
  • the two sub-pixels are the same color.
  • the specific implementation can be set according to the actual situation, and will not be described here.
  • the foregoing pixel structure provided by the embodiment of the present invention may cause the color of any one of the sub-pixels in one pixel unit to be three sub-pixels respectively located in the other three pixel units adjacent to the pixel unit and symmetric with respect to the sub-pixel.
  • the colors are the same.
  • the G sub-pixels in the pixel unit of the first row and the first column, the G sub-pixels in the pixel unit of the first row and the second column, and the pixels of the second row and the first column The G sub-pixels in the cell and the G sub-pixels in the pixel cells in the second row and the second column are the same color.
  • a mask opening can be used to simultaneously vapor deposit the organic light-emitting materials of the four G sub-pixels. In this way, the processing difficulty of the vapor deposition opening of the mask and the manufacturing process requirements of the display panel can be reduced, the product yield can be improved, and the resolution of the display panel can be improved.
  • each pixel unit is respectively a first sub-pixel of a first color, a second sub-pixel of a second color, and a third color.
  • the third sub-pixel, the fourth sub-pixel of the fourth color, the first color, the second color, the third color, and the fourth color are mutually different colors, the first sub-pixel, the second sub-pixel, and the third sub-pixel
  • the fourth sub-pixels are arranged in a clockwise direction or a counterclockwise direction in one of the following arrangements. As shown in Figure 3a:
  • a first sub-pixel a third sub-pixel, a second sub-pixel, and a fourth sub-pixel
  • a first sub-pixel a third sub-pixel, a fourth sub-pixel, and a second sub-pixel;
  • a first sub-pixel a fourth sub-pixel, a third sub-pixel, and a second sub-pixel.
  • the first sub-pixel is a B sub-pixel
  • the second sub-pixel is a W sub-pixel
  • the third sub-pixel is a G sub-pixel
  • the fourth sub-pixel is a R sub-pixel, which can be found in FIG. 2a.
  • B sub-pixel, W sub-pixel, G sub-pixel and R sub-pixel There are two types of arrangement in the hour hand direction: B sub-pixel, W sub-pixel, G sub-pixel and R sub-pixel; and, B sub-pixel, G sub-pixel, W sub-pixel and R sub-pixel; can be found in Figure 2b
  • the first sub-pixel is an R sub-pixel
  • the second sub-pixel is a G sub-pixel
  • the third sub-pixel is a W sub-pixel
  • the fourth sub-pixel is a B sub-pixel
  • the clockwise arrangement can be found in FIG. 2b.
  • the arrangement of four different color sub-pixels in each pixel unit may be in a plurality of different manners.
  • the reason why the pixel structures shown in FIGS. 2a to 2c are different is that some sub-pixels are arranged differently.
  • the dashed box of Fig. 2b points out the difference between Fig. 2b and Fig. 2a.
  • the sub-pixels in the first row and the third column of pixel units in FIG. 2a are arranged in a clockwise direction as B sub-pixels, G sub-pixels, W sub-pixels, and R sub-pixels, and the first row and the third column in FIG. 2b.
  • the sub-pixels in the pixel unit are arranged in a clockwise direction as B sub-pixels, W sub-pixels, G sub-pixels, and R sub-pixels. Comparing Fig. 2c with Fig. 2b, the dashed box of Fig. 2c points out the differences between Fig. 2c and Fig. 2b.
  • the sub-pixels in the first row of pixel cells in the second row of Figure 2b are clockwise
  • the arrangement is R sub-pixel, G sub-pixel, W sub-pixel and B sub-pixel, and the sub-pixels in the second row and the first column of the pixel unit in the second row in FIG. 2c are arranged in a clockwise direction as R sub-pixels and G sub-pixels.
  • the arrangement of the sub-pixels can be performed according to different arrangement manners, and only the sub-pixels of the four colors are evenly distributed to ensure the effect of displaying the image.
  • the specific arrangement is determined on a case-by-case basis and is not limited herein.
  • each of the first color, the second color, the third color, and the fourth color may be The color selected from the red R, the green G, the blue B, and the white W and the first color, the second color, the third color, and the fourth color are different from each other.
  • the first color, the second color, the third color, and the fourth color respectively correspond to R, G, B, W, or correspond to R, G, W, B, or correspond to R, B, G, W, Or corresponds to R, B, W, G, or corresponds to R, W, B, G, or corresponds to R, W, G, B, or corresponds to G, R, B, W, or corresponds to G, R , W, B, or corresponding to G, B, R, W, or corresponding to G, B, W, R, or corresponding to G, W, B, R, or corresponding to G, W, R, B, or Corresponding to B, R, G, W, or corresponding to B, R, W, G, or corresponding to B, G, R, W, or corresponding to B, W, R, or corresponding to B, W, G, or corresponding to B, W, G, R, or corresponding to W, R, G, B, or corresponding to W, R, B, or corresponding to W
  • the first color, the second color, the third color, and the fourth color may correspond to R, G, B, and W, respectively, and may also correspond to other arrangements of four colors of RGBW. As shown in FIG. 3b, there are a total of 24 sub-pixels in each pixel unit.
  • the shape of the sub-pixel is one of a square, a rectangle, and a diamond.
  • the shape of each sub-pixel may be a square; as shown in FIG. 4a, the shape of each sub-pixel may be a rectangle; as shown in FIG. 4b, the shape of each sub-pixel may be a diamond.
  • the shape of the sub-pixels provided by the embodiments of the present invention is not limited to the shape of the sub-pixels shown in the drawings of the present invention, and the shape of the sub-pixels may be set according to actual conditions, which is not limited herein.
  • an embodiment of the present invention further provides an organic electroluminescent display panel, including the above pixel structure provided by the embodiment of the present invention. Since the pixel structure can realize at least four-color pixel display, the organic electroluminescent display panel has a long life, Low power consumption, high brightness, high color gamut and other unique advantages.
  • an embodiment of the present invention further provides a mask for performing an evaporation process on a light-emitting layer of an organic electroluminescence display panel.
  • the mask includes: a mask body and a plurality of vapor deposition openings disposed on the mask body, wherein the plurality of vapor deposition openings are aligned and each of the vapor deposition openings corresponds to the embodiment of the present invention.
  • a pattern of sub-pixels of the same color in the above pixel structure is provided.
  • Figure 5a corresponds to the pixel structure of Figure 2a.
  • each of the vapor deposition openings is aligned in the row direction and the column direction, and each of the vapor deposition openings corresponds to a B sub-pixel (the solid line frame in Fig. 5a is a pattern corresponding to the vapor deposition opening).
  • vapor deposition can be performed by using the mask and making the vapor deposition opening in one-to-one correspondence with the pattern of the sub-pixels of the same color in the pixel structure.
  • An organic light-emitting material that forms a sub-pixel of one color can be vapor-deposited through the mask.
  • an embodiment of the present invention further provides a mask for performing an evaporation process on a light-emitting layer of an organic electroluminescence display panel.
  • the mask comprises: a mask body and a plurality of vapor deposition openings disposed on the mask body, the plurality of vapor deposition openings being staggered and each of the vapor deposition openings corresponding to the present invention
  • the embodiment provides a pattern of sub-pixels of the same color in the above pixel structure.
  • FIG. 5b corresponds to the pixel structure of FIG.
  • FIG. 2a which shows a pattern in which a plurality of vapor deposition openings are staggered in a column direction and one pixel unit is staggered and corresponds to a G sub-pixel
  • the solid-line frame mark in FIG. 5b corresponds to FIG. 5c corresponds to the pixel structure of FIG. 2c, which shows a pattern in which a plurality of vapor deposition openings are staggered in a row direction by one pixel unit and corresponding to W sub-pixels (solid line in FIG. 5c)
  • the frame mark is the figure corresponding to the vapor deposition opening).
  • vapor deposition can be performed by using the mask and making the vapor deposition opening in one-to-one correspondence with the pattern of the sub-pixels of the same color in the pixel structure.
  • An organic light-emitting material that forms a sub-pixel of one color can be vapor-deposited through the mask.
  • the evaporation opening of the mask may be set to a square, a rectangle or a diamond, which is related to the shape of the sub-pixel in the pixel structure, and is not described herein. All square, rectangular or diamond-shaped regions composed of sub-pixels having the same organic light-emitting material may be evaporated. In this process, since one vapor deposition opening corresponds to four sub-pixels, the fabrication of the vapor deposition opening of the mask is made less difficult, that is, the vapor deposition opening can be made relatively larger.
  • an embodiment of the present invention further provides a display device, including The above organic electroluminescent display panel provided by the embodiment of the invention.
  • the display device can be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • Other essential components of the display device are known to those of ordinary skill in the art, and are not described herein, nor should they be construed as limiting the invention.
  • the pixel structure includes: a plurality of pixel units arranged in an array, each of the pixel units including diagonally arranged and shaped Four sub-pixels of the same size; wherein the colors of the four sub-pixels in each pixel unit are different from each other; of any two adjacent pixel units, the two sub-pixels adjacent to each other have the same color.
  • the foregoing pixel structure provided by the embodiment of the present invention may cause the color of any one of the sub-pixels in one pixel unit to be three sub-pixels respectively located in the other three pixel units adjacent to the pixel unit and symmetric with respect to the sub-pixel.
  • the colors are the same. Therefore, one mask opening can be used to simultaneously vaporize the organic light-emitting materials of the four sub-pixels of the same color. In this way, the processing difficulty of the vapor deposition opening of the mask and the manufacturing process requirements of the display panel can be reduced, the product yield can be improved, and the resolution of the display panel can be improved.

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Abstract

一种像素结构、掩膜板、有机电致发光显示面板及显示装置。像素结构包括：呈阵列排布的多个像素单元，每个像素单元包括呈对角排列且形状尺寸相同的四个子像素；其中，每个像素单元中四个子像素的颜色彼此不同；任意两个相邻的像素单元中，位置相邻的两个子像素的颜色相同。提供的像素结构会使得一个像素单元中任意一个子像素的颜色与分别位于和该像素单元相邻的其他三个像素单元中且与该子像素关于同一点对称的三个子像素的颜色相同。因此，可以使用一个掩膜板开口来同时蒸镀这四个相同颜色的子像素的有机发光材料。这样，既可以降低掩膜板蒸镀开口的加工难度和显示面板的制造工艺要求，又可以提高显示面板的解析度。

Description

像素结构、掩膜板、有机电致发光显示面板及显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种像素结构、掩膜板、有机电致发光显示面板及显示装置。
背景技术
目前，有机电致发光显示面板(Organic Electroluminesecent Display，OLED)凭借其低功耗、高色饱和度、广视角、薄厚度、能实现柔性化等优异性能，已经逐渐成为显示领域的主流，可以广泛应用于智能手机、平板电脑、电视等终端产品。近期市场上的智能手机等个人移动产品对显示屏提出了越来越高的分辨率要求，屏幕解析度(即像素密度)已高达400ppi，甚至以后的发展趋势将超过500ppi，这对OLED现有技术形成了巨大的挑战。
现有技术中OLED发光像素的排列方式一般采用与LCD类似的RGB条状排列，即RGB子像素采用并置像素排列方式，如图1所示。在制备OLED的发光层的过程中，主要采用高精度金属掩膜板(Fine Metal Mask，FMM)技术，即在蒸镀RGB中一种有机发光材料时，利用掩膜板的遮挡区域的屏蔽作用将另外两个对应的子像素遮蔽，然后利用高精度对位系统移动掩膜板或衬底基板来依次蒸镀另外两种有机发光材料。当屏幕解析度在300ppi以上时，这种排列方式要求蒸镀有机发光材料所用的掩模板的开口及连接桥非常细小，因此，不但掩模板的加工难度非常大，而且掩模板的对位精度、掩模板阴影、掩模板变形等因素将严重影响有机发光材料蒸镀形成精细的彩色化像素图案。
因此，如何既能降低掩膜板的加工精度和对位精度，又能实现显示面板的高解析度，是本领域技术人员亟需解决的技术问题。
发明内容
有鉴于此，本发明实施例提供一种像素结构、掩膜板、有机电致发光显示面板及显示装置，既可以降低掩膜板蒸镀开口的加工难度和显示面板的制造工艺要求，又可以提高显示面板的解析度。
因此，本发明实施例提供了一种像素结构，包括：呈阵列排布的多个像素单元，每个像素单元包括呈对角排列且形状尺寸相同的四个子像素；其中，
每个像素单元中四个子像素的颜色彼此不同；
任意两个相邻的像素单元中，位置相邻的两个子像素的颜色相同。
在一种可能的实现方式中，在本发明实施例提供的上述像素结构中，每个像素单元中的四个子像素分别为第一颜色的第一子像素、第二颜色的第二子像素、第三颜色的第三子像素、第四颜色的第四子像素，第一子像素、第二子像素、第三子像素和第四子像素按顺时针方向或逆时针方向以以下排列方式中的其中一种进行排列：
第一子像素、第二子像素、第三子像素和第四子像素；
第一子像素、第二子像素、第四子像素和第三子像素；
第一子像素、第三子像素、第二子像素和第四子像素；
第一子像素、第三子像素、第四子像素和第二子像素；
第一子像素、第四子像素、第二子像素和第三子像素；
第一子像素、第四子像素、第三子像素和第二子像素。
在一种可能的实现方式中，在本发明实施例提供的上述像素结构中，所述第一颜色、第二颜色、第三颜色和第四颜色中的每一个为从红色、绿色、蓝色和白色中选取的颜色且所述第一颜色、第二颜色、第三颜色和第四颜色互不相同。
在一种可能的实现方式中，在本发明实施例提供的上述像素结构中，所述子像素的形状为正方形、长方形和菱形其中之一。
本发明实施例还提供了一种掩膜板，包括：掩膜板本体和设置在所述掩膜板本体上的多个蒸镀开口，所述多个蒸镀开口呈对齐排列且每个蒸镀开口对应于本发明实施例提供的上述像素结构中相同颜色的子像素构成的图形。
本发明实施例还提供了一种掩膜板，包括：掩膜板本体和设置在所述掩膜板本体上的多个蒸镀开口，所述多个蒸镀开口呈交错排列且每个蒸镀开口对应于本发明实施例提供的上述像素结构中相同颜色的子像素构成的图形。
本发明实施例还提供了一种有机电致发光显示面板，包括本发明实施例提供的上述像素结构。
本发明实施例还提供了一种显示装置，包括本发明实施例提供的上述有机电致发光显示面板。
本发明实施例的有益效果包括：
在本发明实施例提供的像素结构、掩膜板、有机电致发光显示面板及显示装置中，像素结构包括：呈阵列排布的多个像素单元，每个像素单元包括呈对角排列且形状尺寸相同的四个子像素；其中，每个像素单元中四个子像素的颜色彼此不同；任意两个相邻的像素单元中，位置相邻的两个子像素的颜色相同。本发明实施例提供的上述像素结构会使得一个像素单元中任意一个子像素的颜色与分别位于和该像素单元相邻的其他三个像素单元中且与该子像素关于同一点对称的三个子像素的颜色相同。因此，可以使用一个掩膜板开口来同时蒸镀这四个相同颜色的子像素的有机发光材料。这样，既可以降低掩膜板蒸镀开口的加工难度和显示面板的制造工艺要求，利于提高产品良率，又可以提高显示面板的解析度。
附图说明
图1为现有技术中像素结构的示意图；
图2a为本发明实施例提供的像素结构的示意图之一；
图2b为本发明实施例提供的像素结构的示意图之二；
图2c为本发明实施例提供的像素结构的示意图之三；
图3a和3b分别为本发明实施例提供的像素单元中不同排列方式的子像素的示意图；
图4a为本发明实施例提供的像素结构的示意图之四；
图4b为本发明实施例提供的像素结构的示意图之五；
图5a至图5c分别为本发明实施例提供的掩膜板蒸镀开口排列的示意图。
具体实施方式
下面结合附图，对本发明实施例提供的像素结构、掩膜板、有机电致发光显示面板及显示装置的具体实施方式进行详细地说明。
其中，附图中各结构的形状和大小不反映像素结构的真实比例，目的只是示意说明本发明内容。需要说明的是，在不冲突的情况下， 本发明实施例及实施例中的特征可以相互组合。
本发明实施例提供了一种像素结构，如图2a至图2c所示。该像素结构包括呈阵列排布的多个像素单元(图2a至图2c中实线框标注处)，每个像素单元包括呈对角排列且形状尺寸相同的四个子像素(图2a至图2c中以“田”字结构为例)；其中，
每个像素单元中四个子像素的颜色彼此不同(图2a至图2c中以四个子像素的颜色分别为红色R、蓝色B、绿色G、白色W为例)；
任意两个相邻的像素单元中，位置相邻的两个子像素的颜色相同(图2a中虚线框标注处)。具体地，需要说明的是，这里所指的“位置相邻的两个子像素”包括上下相邻的两个子像素或左右相邻的两个子像素，这两个子像素分别位于两个相邻的像素单元中。虚线框所标示的子像素仅仅是举例，“位置相邻的两个子像素”并不限于虚线框标注处的子像素。图2a中虚线框标注处只是示意性标注出两对位置相邻的子像素，一对W子像素和一对R子像素，其他位于两个相邻的像素单元中且位置相邻的两个子像素也需要满足颜色相同。
需要说明的是，本发明实施例提供的像素结构中所采用的子像素的形状和颜色，可以是任何适合的形状和颜色，而不限于图2a至图2c中所示的子像素的形状和颜色。除了图2a至图2c中所示的像素结构，还可以采用其它像素结构，只要满足同一像素单元中对角排列的四个子像素的颜色彼此不同并且任意两个相邻的像素单元中位置相邻的两个子像素的颜色相同即可。具体实现时可根据实际情况进行设定，在此不再赘述。
本发明实施例提供的上述像素结构会使得一个像素单元中任意一个子像素的颜色与分别位于和该像素单元相邻的其他三个像素单元中且与该子像素关于同一点对称的三个子像素的颜色相同。以图2a中实线框标注处为例，第一行第一列的像素单元中的G子像素、第一行第二列的像素单元中的G子像素、第二行第一列的像素单元中的G子像素以及第二行第二列的像素单元中的G子像素颜色相同。因此，可以使用一个掩膜板开口来同时蒸镀这四个G子像素的有机发光材料。这样，既可以降低掩膜板蒸镀开口的加工难度和显示面板的制造工艺要求，利于提高产品良率，又可以提高显示面板的解析度。
在具体实施时，在本发明实施例提供的上述像素结构中，每个像素单元中的四个子像素分别为第一颜色的第一子像素、第二颜色的第二子像素、第三颜色的第三子像素、第四颜色的第四子像素，第一颜色、第二颜色、第三颜色和第四颜色为互不相同的颜色，第一子像素、第二子像素、第三子像素和第四子像素按顺时针方向或者按逆时针方向以以下排列方式中的其中一种进行排列。如图3a所示：
第一子像素、第二子像素、第三子像素和第四子像素；
第一子像素、第二子像素、第四子像素和第三子像素；
第一子像素、第三子像素、第二子像素和第四子像素；
第一子像素、第三子像素、第四子像素和第二子像素；
第一子像素、第四子像素、第二子像素和第三子像素；
第一子像素、第四子像素、第三子像素和第二子像素。
在具体实施时，假设第一子像素为B子像素，第二子像素为W子像素，第三子像素为G子像素，第四子像素为R子像素，在图2a中可以找到按顺时针方向的排列方式有2种：B子像素、W子像素、G子像素和R子像素；以及，B子像素、G子像素、W子像素和R子像素；在图2b中可以找到按顺时针方向的排列方式有1种：B子像素、W子像素、G子像素和R子像素。假设第一子像素为R子像素，第二子像素为G子像素，第三子像素为W子像素，第四子像素为B子像素，在图2b中可以找到按顺时针方向的排列方式有1种：R子像素、G子像素、W子像素和B子像素；在图2c中可以找到按顺时针方向的排列方式有2种：R子像素、G子像素、B子像素和W子像素；以及，R子像素、G子像素、W子像素和B子像素。
需要说明的是，每个像素单元中的四个不同颜色的子像素的排列方式可以有多种不同的方式。图2a至图2c示出的像素结构之所以不同，原因就在于有些子像素的排列方式不同。将图2b与图2a作比较，图2b的虚线框标注出了图2b与图2a的不同点。例如，图2a中第一行第三列像素单元中子像素按顺时针方向的排列方式为B子像素、G子像素、W子像素和R子像素，而图2b中第一行第三列像素单元中子像素按顺时针方向的排列方式为B子像素、W子像素、G子像素和R子像素。将图2c与图2b作比较，图2c的虚线框标注出了图2c与图2b的不同点。例如，图2b中第二行第一列像素单元中子像素按顺时针方向 的排列方式为R子像素、G子像素、W子像素和B子像素，而图2c中第二行第一列像素单元中子像素按顺时针方向的排列方式为R子像素、G子像素、B子像素和W子像素。在具体实施时，可以按照不同的排列方式进行子像素的排列，只需四种颜色的子像素均匀分布，保证显示图像的效果即可。具体的排列方式根据具体情况而定，在此不作限定。
在具体实施时，在本发明实施例提供的上述像素结构中，为了有效提高显示面板的亮度及色域，第一颜色、第二颜色、第三颜色和第四颜色中的每一个可以为从红色R、绿色G、蓝色B和白色W中选取的颜色并且第一颜色、第二颜色、第三颜色和第四颜色互不相同。即，第一颜色、第二颜色、第三颜色和第四颜色分别对应于R、G、B、W，或对应于R、G、W、B，或对应于R、B、G、W，或对应于R、B、W、G，或对应于R、W、B、G，或对应于R、W、G、B，或对应于G、R、B、W，或对应于G、R、W、B，或对应于G、B、R、W，或对应于G、B、W、R，或对应于G、W、B、R，或对应于G、W、R、B，或对应于B、R、G、W，或对应于B、R、W、G，或对应于B、G、R、W，或对应于B、G、W、R，或对应于B、W、R、G，或对应于B、W、G、R，或对应于W、R、G、B，或对应于W、R、B、G，或对应于W、G、R、B，或对应于W、G、B、R，或对应于W、B、G、R，或对应于W、B、R、G。可以看出，第一颜色、第二颜色、第三颜色和第四颜色除了可以分别对应于R、G、B、W，还可以对应于RGBW四种颜色的其他排列方式。如图3b所示，每个像素单元中的子像素一共有24种排列方式。
在具体实施时，在本发明实施例提供的上述像素结构中，子像素的形状为正方形、长方形和菱形其中之一。如图2a至2c所示，每个子像素的形状可以为正方形；如图4a所示，每个子像素的形状可以为长方形；如图4b所示，每个子像素的形状可以为菱形。需要说明的是，本发明实施例提供的子像素的形状不限于本发明附图中所示的子像素的形状，子像素的形状可根据实际情况进行设定，在此不作限定。
基于同一发明构思，本发明实施例还提供了一种有机电致发光显示面板，包括本发明实施例提供的上述像素结构。由于该像素结构至少可以实现四色像素显示，因而使有机电致发光显示面板有着长寿命、 低功耗、高亮度、高色域等特有的优势。
基于同一发明构思，本发明实施例还提供了一种掩膜板，该掩膜板用来对有机电致发光显示面板的发光层进行蒸镀工艺。如图5a所示，掩膜板包括：掩膜板本体和设置在掩膜板本体上的多个蒸镀开口，多个蒸镀开口呈对齐排列且每个蒸镀开口对应于本发明实施例提供的上述像素结构中相同颜色的子像素构成的图形。例如，图5a对应于图2a的像素结构。图5a示出了各蒸镀开口在行方向和列方向上对齐排列且每个蒸镀开口对应于B子像素构成的图形(图5a中实线框标注处为对应蒸镀开口的图形)。具体地，在蒸镀工艺中，使用该掩膜板并使其蒸镀开口与上述像素结构中相同颜色的子像素构成的图形一一对应即可进行蒸镀。通过该掩膜板可以蒸镀形成一种颜色的子像素的有机发光材料。
基于同一发明构思，本发明实施例还提供了一种掩膜板，该掩膜板用来对有机电致发光显示面板的发光层进行蒸镀工艺。如图5b和5c所示，掩膜板包括：掩膜板本体和设置在掩膜板本体上的多个蒸镀开口，多个蒸镀开口呈交错排列且每个蒸镀开口对应于本发明实施例提供的上述像素结构中相同颜色的子像素构成的图形。例如，图5b对应于图2a的像素结构，其示出了多个蒸镀开口在列方向交错一个像素单元交错排列且对应于G子像素构成的图形(图5b中实线框标注处为对应蒸镀开口的图形)；图5c对应于图2c的像素结构，其示出了多个蒸镀开口在行方向交错一个像素单元交错排列且对应于W子像素构成的图形(图5c中实线框标注处为对应蒸镀开口的图形)。具体地，在蒸镀工艺中，使用该掩膜板并使其蒸镀开口与上述像素结构中相同颜色的子像素构成的图形一一对应即可进行蒸镀。通过该掩膜板可以蒸镀形成一种颜色的子像素的有机发光材料。
需要说明的是，掩膜板的蒸镀开口可以设置为正方形、长方形或菱形，其与像素结构中子像素的形状有关，在此不作赘述。可对具有相同的有机发光材料的子像素构成的所有正方形、长方形或菱形区域进行蒸镀。在此过程中，由于一个蒸镀开口对应四个子像素，因而使得掩膜板的蒸镀开口的制作难度减小，即，可以将蒸镀开口制作的相对较大一些。
基于同一发明构思，本发明实施例还提供了一种显示装置，包括 本发明实施例提供的上述有机电致发光显示面板。该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。该显示装置的其它必不可少的组成部分均为本领域的普通技术人员所知，在此不做赘述，也不应作为对本发明的限制。该显示装置的实施可以参见上述有机电致发光显示面板及像素结构的实施例，重复之处不再赘述。
在本发明实施例提供的像素结构、掩膜板、有机电致发光显示面板及显示装置中，像素结构包括：呈阵列排布的多个像素单元，每个像素单元包括呈对角排列且形状尺寸相同的四个子像素；其中，每个像素单元中四个子像素的颜色彼此不同；任意两个相邻的像素单元中，位置相邻的两个子像素的颜色相同。本发明实施例提供的上述像素结构会使得一个像素单元中任意一个子像素的颜色与分别位于和该像素单元相邻的其他三个像素单元中且与该子像素关于同一点对称的三个子像素的颜色相同。因此，可以使用一个掩膜板开口来同时蒸镀这四个相同颜色的子像素的有机发光材料。这样，既可以降低掩膜板蒸镀开口的加工难度和显示面板的制造工艺要求，利于提高产品良率，又可以提高显示面板的解析度。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (8)

  1. 一种像素结构，包括：呈阵列排布的多个像素单元，每个像素单元包括呈对角排列且形状尺寸相同的四个子像素；其中，
    每个像素单元中四个子像素的颜色彼此不同；
    任意两个相邻的像素单元中，位置相邻的两个子像素的颜色相同。
  2. 如权利要求1所述的像素结构，其中，每个像素单元中的四个子像素分别为第一颜色的第一子像素、第二颜色的第二子像素、第三颜色的第三子像素、第四颜色的第四子像素，所述第一子像素、第二子像素、第三子像素和第四子像素按顺时针方向或逆时针方向以以下排列方式中的其中一种进行排列：
    第一子像素、第二子像素、第三子像素和第四子像素；
    第一子像素、第二子像素、第四子像素和第三子像素；
    第一子像素、第三子像素、第二子像素和第四子像素；
    第一子像素、第三子像素、第四子像素和第二子像素；
    第一子像素、第四子像素、第二子像素和第三子像素；
    第一子像素、第四子像素、第三子像素和第二子像素。
  3. 如权利要求2所述的像素结构，其中，所述第一颜色、第二颜色、第三颜色和第四颜色中的每一个为从红色、绿色、蓝色和白色中选取的颜色且所述第一颜色、第二颜色、第三颜色和第四颜色互不相同。
  4. 如权利要求1-3中任一项所述的像素结构，其中，所述子像素的形状为正方形、长方形和菱形其中之一。
  5. 一种掩膜板，包括：掩膜板本体和设置在所述掩膜板本体上的多个蒸镀开口，其中，所述多个蒸镀开口呈对齐排列且每个蒸镀开口对应于如权利要求1-4中任一项所述的像素结构中相同颜色的子像素构成的图形。
  6. 一种掩膜板，包括：掩膜板本体和设置在所述掩膜板本体上的多个蒸镀开口，其中，所述多个蒸镀开口呈交错排列且每个蒸镀开口对应于如权利要求1-4中任一项所述的像素结构中相同颜色的子像素构成的图形。
  7. 一种有机电致发光显示面板，包括如权利要求1-4中任一项所 述的像素结构。
  8. 一种显示装置，包括如权利要求7所述的有机电致发光显示面板。
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