WO2016050014A1 - 有机发光二极管阵列基板、显示装置 - Google Patents

有机发光二极管阵列基板、显示装置 Download PDF

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Publication number
WO2016050014A1
WO2016050014A1 PCT/CN2015/070888 CN2015070888W WO2016050014A1 WO 2016050014 A1 WO2016050014 A1 WO 2016050014A1 CN 2015070888 W CN2015070888 W CN 2015070888W WO 2016050014 A1 WO2016050014 A1 WO 2016050014A1
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Prior art keywords
pixels
color sub
sub
pixel
array substrate
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PCT/CN2015/070888
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English (en)
French (fr)
Inventor
白珊珊
嵇凤丽
玄明花
刘建涛
许静波
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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 BR112015032778-8A priority Critical patent/BR112015032778B1/pt
Priority to US14/775,836 priority patent/US9761639B2/en
Priority to MX2015017984A priority patent/MX362069B/es
Priority to EP15762459.4A priority patent/EP3203520B1/en
Priority to RU2015156321A priority patent/RU2678597C2/ru
Publication of WO2016050014A1 publication Critical patent/WO2016050014A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • 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
    • H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing

Definitions

  • the present invention belongs to the field of display technologies, and in particular, to an organic light emitting diode array.
  • the array substrate of the organic light emitting diode (OLED) display device includes a plurality of sub-pixels, and each of the sub-pixels is provided with an organic light emitting diode for emitting light of a corresponding color.
  • the organic light emitting diode includes a cathode, an anode, a light emitting layer, and may also have a hole transport. A layer, a hole injection layer, an electron transport layer, an electron injection layer, or the like.
  • the light-emitting layers of the sub-pixels of different colors have different materials, so their luminous efficiency and lifetime are also different. In general, the efficiency and lifetime of the existing green light-emitting layer are the highest, while the efficiency and lifetime of the blue light-emitting layer and the red light-emitting layer are relatively poor (where blue is usually worse).
  • the sub-pixels of each color are rectangular of equal size; the array substrate of this form has a simple and regular structure, but the life of the red sub-pixel and the blue sub-pixel (actually the luminescent layer therein) Shorter, when they are degraded or damaged, the green sub-pixels are still intact, resulting in a shorter overall life of the array substrate, and the performance of the green sub-pixels cannot be fully utilized.
  • the technical problem to be solved by the present invention includes providing an organic light emitting diode array substrate with various sub-pixel lifetimes and high resolution for the problem that different sub-pixels of different colors in the existing organic light-emitting diode array substrate have different lifetimes.
  • the technical solution adopted to solve the technical problem of the present invention is an organic light emitting diode array substrate including a plurality of sub-pixels having a light-emitting layer, the sub-pixels including a first color sub-pixel and a second color sub-divided by number Pixel, third color sub-pixel, and,
  • the first color sub-pixel is a diamond shape
  • the second color sub-pixel and the third color sub-pixel are parallelograms, and Their short side length is equal to the side length of the first color sub-pixel, and the long side length is greater than the side length of the first color sub-pixel.
  • each of the sub-pixels has a set of opposite sides parallel to the first direction and another set of opposite sides parallel to the second direction.
  • the lengths of the long sides of the second color sub-pixel and the third color sub-pixel are both 1.5 times the side length of the first color sub-pixel.
  • the array substrate comprises a plurality of repeating units, and each of the repeating units includes four first color sub-pixels, four second color sub-pixels, and four third color sub-pixels.
  • the long sides of the two second color sub-pixels are parallel to the first direction, and the long sides of the other two second color sub-pixels are parallel to the second direction;
  • the long sides of the color sub-pixels are parallel to the first direction, and the long sides of the other two third color sub-pixels are parallel to the second direction.
  • first color sub-pixels are arranged adjacently in the first direction, and the other two first color sub-pixels are adjacently arranged in the second direction; a second color sub-pixel having a long side parallel to the first direction is adjacently arranged along the first direction, and the second color sub-pixels having two long sides parallel to the second direction are adjacently arranged in the second direction; The third color sub-pixels having two long sides parallel to the first direction are adjacently arranged in the first direction, and the two color sub-pixels whose two long sides are parallel to the second direction are adjacently arranged in the second direction.
  • the two second color sub-pixels arranged adjacently in the first direction and the two first color sub-pixels arranged adjacent in the first direction Arranging into a first column; one end of the two second color sub-pixels adjacently arranged in the second direction coincides with the side of the first color sub-pixel of the first column end; the two along the first One side of the third color sub-pixel adjacently arranged in the two directions coincides with one side of the two second color sub-pixels adjacently arranged in the second direction; the two along the first direction One side of the adjacent third color sub-pixels coincides with one side of the two second color sub-pixels in the first column, and one end is in contact with the other two third color sub-pixels;
  • the two first color sub-pixels adjacently arranged in the second direction are adjacent to the two second colors arranged adjacent to the second direction One end of the sub-pixel coincides.
  • each of the sub-pixels is closely arranged. That is to say, each sub-pixel is combined and arranged in a seamless manner to fill the display area of the entire array substrate.
  • the first color is green; one of the second color and the third color is red and the other is blue.
  • a technical solution adopted to solve the technical problem of the present invention is a display device including the above-described organic light emitting diode array substrate.
  • the sub-pixels of different colors have different unequal areas, the sub-pixel area with shorter lifetime can be larger, and the sub-pixel area with longer lifetime can be smaller, according to a known law, at a desired display brightness.
  • the larger the area of the sub-pixel actually the light-emitting layer
  • the lower the light-emitting luminance per unit area so the smaller the current density through the sub-pixel is, the more it is used.
  • the lifetime can be extended; therefore, by adjusting the size of the sub-pixels of different colors, the lifetime of the sub-pixels of each color can be balanced, and the overall service life of the array substrate is prolonged; at the same time, the luminous efficiency of the sub-pixels of different colors is different, and the human eye has different colors.
  • the sensitivity is also different, so in the array substrate, the area of the sub-pixel can be adjusted according to these factors, thereby achieving a better display effect; in addition, since each sub-pixel is closely arranged without a gap,
  • the organic light emitting diode array substrate has high resolution and space utilization, that is, it can achieve an extended life based on improved resolution.
  • FIG. 1 is a schematic structural view of a repeating unit in an organic light emitting diode array substrate according to an embodiment of the present invention
  • FIG. 2 is a schematic view of an organic light emitting diode array substrate in which an embodiment of the present invention is composed of repeating units in FIG. 1;
  • FIG. 3 is a schematic structural view showing another representation of a repeating unit in an organic light emitting diode array substrate according to an embodiment of the present invention
  • FIG. 4 is a schematic view of an organic light emitting diode array substrate in which an embodiment of the present invention is composed of repeating units in FIG.
  • the embodiment provides an OLED array substrate, including a plurality of sub-pixels having a luminescent layer, the sub-pixels including first color sub-pixels, second color sub-pixels, and third color sub-pixels equally divided by quantity. And,
  • the first color sub-pixel is a diamond shape
  • the second color sub-pixel and the third color sub-pixel are parallelograms, and their short side length is equal to the side length of the first color sub-pixel, and the long side length is greater than the side length of the first color sub-pixel.
  • the embodiment provides an OLED array substrate including a plurality of sub-pixels having a luminescent layer, the plurality of sub-pixels including a first color sub-pixel, a second color sub-pixel, and a third color sub-divided by number Pixel.
  • the OLED array substrate of the present embodiment is composed of a plurality of sub-pixels, and the sub-pixels are closely arranged so as to seamlessly cover the display area of the entire array substrate.
  • each sub-pixel has an organic light emitting diode, and the organic light emitting diode is provided with a light emitting layer for emitting light.
  • the sub-pixels in the array substrate are divided into three different colors (such as red, green, and blue), and the number of sub-pixels of each color is equal.
  • the sub-pixel in addition to the organic light emitting diode (in which the light emitting layer is provided), a thin film transistor, a pixel defining layer (PDL for separating the light emitting layers in different sub-pixels), and the like are provided,
  • the light-emitting layer does not occupy the entire area of the sub-pixel, but this does not affect the rule that the area of the light-emitting layer is larger as the area of the sub-pixel is larger.
  • the first color sub-pixel is a diamond shape; and the second color sub-pixel and the third color sub-pixel are parallelograms, and the short side length thereof is equal to the side length of the first color sub-pixel, and the long side length is greater than the first The length of the side of the color subpixel.
  • the sub-pixels of one color are diamond-shaped (the sides are equal), and the sub-pixels of the other two colors are parallelograms (the sides are not equal), and the short sides of the parallelograms
  • the length is equal to the length of the side of the diamond, and the length of the long side is longer than the side of the diamond.
  • the sub-pixels of different colors have different unequal areas, and according to a known rule, in the case where the required display brightness (ie, the brightness perceived by the human eye) is the same, the sub-pixel (actually the luminescent layer) The larger the area, the lower the luminance of the unit area, so the smaller the current density through the sub-pixel, the longer the service life.
  • the lifetime of the sub-pixels of each color can be balanced, thereby extending the overall service life of the array substrate; at the same time, the luminous efficiency of the sub-pixels of different colors is different, and the sensitivity of the human eye to different colors is Differently, in the array substrate, the area of the sub-pixel can be adjusted according to these factors, thereby achieving a better display effect; in addition, since each sub-pixel is closely arranged without a gap, the array substrate has Higher resolution and space utilization allow for longer life extensions based on increased resolution.
  • the first color above is green, and one of the second color and the third color is red and the other is blue.
  • the area of the green sub-pixel is small, and the area of the sub-pixels of the other two colors is large. This is because, in terms of the performance of the existing luminescent layer material, the sub-pixel area is the same, usually the green sub-pixel has the longest life (the highest efficiency, the human eye is also most sensitive to green), and the blue and The red sub-pixel has a short lifetime, so that the area of the blue sub-pixel and the red sub-pixel can be made larger to extend their lifetime.
  • doped green light materials are C-545T, C-545MT, DMQA, DPT, etc.
  • doped red light materials are DCJT, DCJTB, Tubrene, etc.
  • non-doped red light materials have ACEN, (PPA) (PPA) Pe et al.
  • blue light materials include TBADN, BCZVBi, DPVBI, DSA, TPP, and the like.
  • the first color may be red or blue, or the color of each sub-pixel is also other colors such as red, green, and blue.
  • each sub-pixel has a set of opposite sides parallel to the first direction and another set of opposite sides parallel to the second direction.
  • each of the parallelograms and the diamonds are preferably parallel to each other, which makes it easier to achieve close alignment of the sub-pixels.
  • the lengths of the long sides of the second color sub-pixel and the third color sub-pixel are both 1.5 times the side length of the first color sub-pixel.
  • the parallelograms of the second color sub-pixel and the third color sub-pixel are preferably equal in size and have an area 1.5 times that of the first color sub-pixel.
  • Such a multiple relationship is convenient for achieving tight alignment on the one hand; on the other hand, for the existing light-emitting layer material, the area of the blue and red sub-pixels is 1.5 times the area of the green sub-pixel, and the life extension effect can be achieved at the same time. And display effects.
  • the array substrate comprises a plurality of repeating units, each of which includes four first color sub-pixels, four second color sub-pixels, and four third color sub-pixels.
  • the array substrate can also be regarded as being composed of a plurality of identical repeating units, wherein each repeating unit has the same structure and includes 12 rows arranged in a certain form.
  • Subpixel The advantage of this form is that the sub-pixel arrangement in the entire array substrate is relatively regular, so it is convenient to prepare and drive.
  • the long sides of the two second color sub-pixels are parallel to the first direction, and the long sides of the other two second color sub-pixels are parallel to The second direction; the long sides of the two third color sub-pixels are parallel to the first direction, and the long sides of the other two third color sub-pixels are parallel to the second direction.
  • each sub-pixel is easily aligned in a relatively uniform distribution.
  • the arrangement of 12 sub-pixels in the repeating unit may be in the form shown in FIG.
  • the repeating unit of this form can be formed into an array substrate in the manner shown in FIG. 2.
  • the sub-pixels are closely arranged, and the sub-pixels of different colors are uniformly distributed, which is easy to realize high-resolution display and display effect.
  • the driving method is relatively simple.
  • the above arrangement has an advantage in that many sub-pixels of the same color are arranged adjacently, such that when the light-emitting layer is formed by evaporation, the light in the adjacent sub-pixels of the same color
  • the layer can be formed by an opening in a fine metal mask (FMM).
  • FMM fine metal mask
  • the minimum size of the opening is limited (mainly limited by the process conditions), resulting in a limited minimum size of the light-emitting layer formed by it, which limits the size reduction of sub-pixels ( Or an important factor that limits the resolution).
  • the size of each sub-pixel can be correspondingly reduced in the case where the opening size is constant (because it only corresponds to the opening) Part of it), thereby increasing the resolution.
  • each sub-pixel can still display the required content independently.
  • two first color sub-pixels are arranged adjacently in the first direction, and the other two first color sub-pixels are adjacently arranged in the second direction; two long sides are parallel to The second color sub-pixels in the first direction are arranged adjacently in the first direction, and the second color sub-pixels in which the two long sides are parallel to the second direction are adjacently arranged in the second direction; the two long sides are parallel to the first
  • the third color sub-pixels of the direction are arranged adjacently in the first direction, and the second color sub-pixels whose two long sides are parallel to the second direction are adjacently arranged in the second direction.
  • each sub-pixel of the same color in the repeating unit is divided into “2 pairs", and there are 2 consecutively arranged sub-pixels in each "pair”, and these "pair" sub-pixels constitute a repeating unit.
  • Such a design is advantageous for increasing the number of adjacent sub-pixels of the same color, so as to make more hair in a plurality of sub-pixels with one opening in the mask.
  • Light layer is advantageous for increasing the number of adjacent sub-pixels of the same color, so as to make more hair in a plurality of sub-pixels with one opening in the mask.
  • each sub-pixel is preferably arranged in the form shown in FIG. 1 according to the above description, and this form can achieve better effects in terms of improving resolution, improving display effect, and extending the life of the array substrate, etc.
  • the optimal solution of the invention is to say, each sub-pixel is preferably arranged in the form shown in FIG. 1 according to the above description, and this form can achieve better effects in terms of improving resolution, improving display effect, and extending the life of the array substrate, etc. The optimal solution of the invention.
  • the above described arrangement only represents the relative positional relationship of each sub-pixel in the repeating unit, rather than the absolute position, so that the equivalent deformation is also the protection scope of the present invention.
  • the repeating unit is flipped horizontally or vertically (the corresponding first direction and second direction are also reversed)
  • the resulting arrangement is substantially the same as the above arrangement.
  • the repeating unit is substantially the same as long as the arrangement of the sub-pixels in the entire array substrate is unchanged; for example, the repeating unit in FIG. 3 looks like and 1 is different, but it can be seen from FIG.
  • the driving method (display method) of the array substrate of the embodiment is various. For example, three sub-pixels adjacent to each other and different colors may be used as one “pixel”, and the content to be displayed according to the pixel may be displayed. Calculate the brightness of three sub-pixels; or Alternatively, the array substrate may be divided into a plurality of regions, and the display content of each sub-pixel or the like may be calculated according to the area ratio of the sub-pixels of different colors in each region; in short, the driving method thereof will not be described in detail herein.
  • the display device is an organic light emitting diode (OLED) display device, which may specifically be any product or component having a display function, such as an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • OLED organic light emitting diode

Abstract

提供一种有机发光二极管阵列基板、显示装置，属于显示技术领域，其可解决现有的有机发光二极管阵列基板中不同颜色的子像素寿命不同的问题。有机发光二极管阵列基板包括多个具有发光层的子像素，子像素包括按数量等分的第一颜色子像素、第二颜色子像素、第三颜色子像素，且，第一颜色子像素为菱形；第二颜色子像素和第三颜色子像素为平行四边形，且它们的短边长度与第一颜色子像素的边长相等，长边长度均大于第一颜色子像素的边长。

Description

有机发光二极管阵列基板、显示装置 技术领域
本发明属于显示技术领域，具体涉及一种有机发光二极管阵
列基板、显示装置。
背景技术
有机发光二极管(OLED)显示装置的阵列基板中包括多个子像素，每个子像素中设有用于发出相应颜色光的有机发光二极管，有机发光二极管包括阴极、阳极、发光层，还可有空穴传输层、空穴注入层、电子传输层、电子注入层等。其中，不同颜色的子像素的发光层的材料不同，故它们的发光效率和寿命也不同。一般来讲，现有绿色发光层的效率、寿命均最高，而蓝色发光层和红色发光层的效率、寿命则相对较差(其中蓝色通常更差)。
现有的阵列基板中，各颜色的子像素均为等尺寸的矩形；这种形式的阵列基板结构简单、规整，但其中红色子像素和蓝色子像素(实际为其中的发光层)的寿命较短，当它们出现性能降低或损坏时，绿色子像素往往仍是完好的，从而导致阵列基板的整体寿命较短，绿色子像素的性能不能被充分利用。
发明内容
本发明所要解决的技术问题包括，针对现有的有机发光二极管阵列基板中不同颜色的子像素寿命不同的问题，提供一种各种子像素寿命均衡且分辨率高的有机发光二极管阵列基板。
解决本发明技术问题所采用的技术方案是一种有机发光二极管阵列基板，其包括多个具有发光层的子像素，所述子像素包括按数量等分的第一颜色子像素、第二颜色子像素、第三颜色子像素，且，
所述第一颜色子像素为菱形；
所述第二颜色子像素和第三颜色子像素为平行四边形，且它 们的短边长度与第一颜色子像素的边长相等，长边长度均大于所述第一颜色子像素的边长。
优选的是，每个所述子像素均有一组相对侧边平行于第一方向，另一组相对侧边平行于第二方向。
进一步优选的是，所述第二颜色子像素和第三颜色子像素的长边长度均为所述第一颜色子像素的边长的1.5倍。
进一步优选的是，所述阵列基板包括多个重复单元，每个重复单元中包括4个第一颜色子像素、4个第二颜色子像素、4个第三颜色子像素。
进一步优选的是，每个所述重复单元中，2个第二颜色子像素的长边平行于第一方向，另外2个第二颜色子像素的长边平行于第二方向；2个第三颜色子像素的长边平行于第一方向，另外2个第三颜色子像素的长边平行于第二方向。
进一步优选的是，每个所述重复单元中，2个第一颜色子像素沿第一方向相邻排布，另外2个第一颜色子像素沿第二方向相邻排布；所述2个长边平行于第一方向的第二颜色子像素沿第一方向相邻排布，所述2个长边平行于第二方向的第二颜色子像素沿第二方向相邻排布；所述2个长边平行于第一方向的第三颜色子像素沿第一方向相邻排布，所述2个长边平行于第二方向的第三颜色子像素沿第二方向相邻排布。
进一步优选的是，每个所述重复单元中，所述2个沿第一方向相邻排布的第二颜色子像素与所述2个沿第一方向相邻排布的第一颜色子像素排成第一列；所述2个沿第二方向相邻排布的第二颜色子像素一端与所述第一列端部的第一颜色子像素的侧边重合；所述2个沿第二方向相邻排布的第三颜色子像素的一侧边与所述2个沿第二方向相邻排布的第二颜色子像素的一侧边重合；所述2个沿第一方向相邻排布的第三颜色子像素的一侧边与所述第一列中的2个第二颜色子像素的一侧边重合，且一端与另外2个第三颜色子像素的侧边接触；所述2个沿第二方向相邻排布的第一颜色子像素一端与所述2个沿第二方向相邻排布的第三颜色 子像素的一端重合。
这样的话，各所述子像素是紧密排列的。也就是说，各子像素以无缝隙的方式组合排列在一起，从而填满整个阵列基板的显示区。
进一步优选的是，所述第一颜色为绿色；所述第二颜色和第三颜色中一个为红色，另一个为蓝色。
解决本发明技术问题所采用的技术方案是一种显示装置，其包括上述的有机发光二极管阵列基板。
本发明的有机发光二极管阵列基板中不同颜色的子像素面积不等，寿命较短的子像素面积可较大，寿命较长的子像素面积可较小，按照已知规律，在所需显示亮度(即人眼感受到的亮度)相同的情况下，子像素(实际为发光层)的面积越大，则单位面积的发光亮度就越低，故通过子像素的电流密度就越小，其使用寿命可延长；因此，通过调整不同颜色子像素的尺寸，可使各颜色的子像素寿命均衡，延长阵列基板的整体使用寿命；同时，不同颜色的子像素的发光效率不同，人眼对不同颜色的敏感度也不同，故在该阵列基板中，还可根据这些因素对子像素的面积进行调整，从而达到更好的显示效果；另外，由于各子像素是紧密排列的，没有缝隙，故该有机发光二极管阵列基板具有较高的分辨率和空间利用率，即其可在提高分辨率的基础上实现寿命的延长。
附图说明
图1为本发明的实施例的有机发光二极管阵列基板中的一种重复单元的结构示意图；
图2为由图1中的重复单元组成本发明的实施例的有机发光二极管阵列基板的示意图；
图3为本发明的实施例的有机发光二极管阵列基板中的重复单元的另一种表现形式的结构示意图；
图4为由图3中的重复单元组成本发明的实施例的有机发光二极管阵列基板的示意图。
具体实施方式
为使本领域技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明作进一步详细描述。
实施例1：
本实施例提供一种有机发光二极管阵列基板，包括多个具有发光层的子像素，所述子像素包括按数量等分的第一颜色子像素、第二颜色子像素、第三颜色子像素，且，
所述第一颜色子像素为菱形；
所述第二颜色子像素和第三颜色子像素为平行四边形，且它们的短边长度与第一颜色子像素的边长相等，长边长度均大于所述第一颜色子像素的边长。
实施例2：
本实施例提供一种有机发光二极管阵列基板，其包括多个具有发光层的子像素，所述多个子像素包括按数量等分的第一颜色子像素、第二颜色子像素、第三颜色子像素。
也就是说，本实施例的有机发光二极管阵列基板是由多个子像素构成的，且这些子像素紧密排列，从而无缝隙地布满整个阵列基板的显示区。其中，每个子像素内有一个有机发光二极管，该有机发光二极管中设有用于发光的发光层。阵列基板中的子像素分为三种不同颜色(如红色、绿色、蓝色)，且每种颜色的子像素数量相等。
当然，在子像素中，除了有机发光二极管(其中设有发光层)外，还设有薄膜晶体管、像素界定层(PDL，用于将不同子像素中的发光层隔开)等其他结构，故发光层不会占据子像素的全部面积，但这并不影响子像素面积越大则发光层面积越大的规律。
其中，第一颜色子像素为菱形；而第二颜色子像素和第三颜色子像素为平行四边形，且它们的短边长度与第一颜色子像素的边长相等，长边长度均大于第一颜色子像素的边长。
也就是说，在阵列基板中，一种颜色的子像素是菱形的(边长相等)，另外两种颜色的子像素则为平行四边形(边长不等)，且该平行四边形的短边的长度与菱形的边长相等，长边的长度则比菱形的边长大。
本发明的有机发光二极管阵列基板中不同颜色的子像素面积不等，按照已知规律，在所需显示亮度(即人眼感受到的亮度)相同的情况下，子像素(实际为发光层)的面积越大，则单位面积的发光亮度就越低，故通过子像素的电流密度就越小，其使用寿命就越长。因此，通过调整不同颜色子像素的尺寸，可使各颜色的子像素寿命均衡，进而延长阵列基板的整体使用寿命；同时，不同颜色的子像素的发光效率不同，人眼对不同颜色的敏感度也不同，故在该阵列基板中，还可根据这些因素对子像素的面积进行调整，从而达到更好的显示效果；另外，由于各子像素是紧密排列的，没有缝隙，故该阵列基板具有较高的分辨率和空间利用率，即可在提高分辨率的基础上实现寿命的延长。
优选的，以上第一颜色为绿色，而第二颜色和第三颜色中一个为红色，另一个为蓝色。
也就是说，优选是绿色子像素的面积较小，而其他两种颜色的子像素面积较大。这是因为就现有发光层材料的性能而言，子像素面积相同的情况下，通常都是绿色子像素的寿命最长(同时效率最高，人眼也对绿色最敏感)，而蓝色和红色子像素的寿命较短，故可使蓝色子像素和红色子像素的面积较大，以延长它们的寿命。具体的，常用的掺杂型绿光材料有C-545T、C-545MT、DMQA、DPT等，掺杂型红光材料有DCJT、DCJTB、Tubrene等，非掺杂型的红光材料有ACEN、(PPA)(PPA)Pe等，蓝光材料有TBADN、BCZVBi、DPVBI、DSA、TPP等。
当然，以上内容不是对本发明保护范围的限定，即第一颜色 也可为红色或蓝色，或者各子像素的颜色也为红色、绿色、蓝色之外的其他颜色等。
优选的，每个子像素均有一组相对侧边平行于第一方向，另一组相对侧边平行于第二方向。
也就是说，各平行四边形及菱形的相应侧边优选是相互平行的，这样更便于实现子像素的紧密排列。
更优选的，第二颜色子像素和第三颜色子像素的长边长度均为第一颜色子像素的边长的1.5倍。
也就是说，第二颜色子像素和第三颜色子像素的平行四边形优选尺寸相等，且其面积是第一颜色子像素的1.5倍。这样的倍数关系一方面便于实现紧密排列；另一方面，对于现有的发光层材料，使蓝色和红色子像素的面积为绿色子像素面积的1.5倍，可以同时达到较好的延长寿命效果和显示效果。
更优选的，阵列基板包括多个重复单元，每个重复单元中包括4个第一颜色子像素、4个第二颜色子像素、4个第三颜色子像素。
也就是说，如图2、图4所示，阵列基板也可看成是由多个相同的重复单元排列而成的，其中每个重复单元的结构相同，并包括12个排成一定形式的子像素。这种形式的优点在于整个阵列基板中的子像素排布比较规律，故制备和驱动均比较方便。
更优选的，如图1、图3所示，在每个重复单元中，有2个第二颜色子像素的长边平行于第一方向，另外2个第二颜色子像素的长边平行于第二方向；有2个第三颜色子像素的长边平行于第一方向，另外2个第三颜色子像素的长边平行于第二方向。
也就是说，在重复单元的4个第二颜色子像素中，有2个长边平行于第一方向(相应的其短边平行于第二方向)，另外2个则是长边平行于第二方向(相应的其短边平行于第一方向)；4个第三颜色子像素的规律与其类似。
在符合以上的排列条件时，各子像素容易在分布比较均匀的情况下实现紧密排列。
更优选的，重复单元中的12个子像素的排列方式可为如图1所示的形式。
这种形式的重复单元可按照图2所示的方式组成阵列基板，在阵列基板中，各子像素紧密排列，且不同颜色的子像素分布比较均匀，易于实现高分辨率的显示，且显示效果比较好，驱动方式比较简单。
另外，以上的排列方式还有一个优点，即其中有许多同颜色的子像素是相邻排列的，这样，在通过蒸镀形成发光层时，这种相邻且颜色相同的子像素中的发光层可通过精细金属掩膜板(FMM)中的一个开口形成。对精细金属掩膜板而言，其开口的最小尺寸受限(主要是受工艺条件的限制)，从而导致用其形成的发光层的最小尺寸受限，这也就成为限制子像素尺寸缩小(或者说限制分辨率提高)的重要因素。而根据以上方案，由于精细金属掩膜板中的一个开口可同时形成多个子像素中的发光层，故在开口尺寸不变的情况下，每个子像素的尺寸可相应缩小(因为其仅对应开口的一部分)，从而提高分辨率。
当然，虽然上述部分子像素中的发光层可通过掩膜板中的一个开口制造，但各子像素中的有机发光二极管的驱动电极仍是分开的，且各子像素中还设有像素界定层，故各子像素仍可分别独立的显示所需内容。
更具体的，在上述的重复单元中，2个第一颜色子像素沿第一方向相邻排布，另外2个第一颜色子像素沿第二方向相邻排布；2个长边平行于第一方向的第二颜色子像素沿第一方向相邻排布，2个长边平行于第二方向的第二颜色子像素沿第二方向相邻排布；2个长边平行于第一方向的第三颜色子像素沿第一方向相邻排布，2个长边平行于第二方向的第三颜色子像素沿第二方向相邻排布。
也就是说，重复单元中的每种同颜色的子像素分为“2对”，每“对”中有2个连续排布的子像素，这些“对”子像素再组成重复单元。这样的设计有利于增加上述相邻且同颜色的子像素的个数，以便更多地用掩膜板中的一个开口制造多个子像素中的发 光层。
进一步优选的，如图1所示，在上述的重复单元中，2个沿第一方向相邻排布的第二颜色子像素与2个沿第一方向相邻排布的第一颜色子像素排成第一列(图中左上侧的4个子像素)；2个沿第二方向相邻排布的第二颜色子像素(图中左下侧的2个子像素)一端与第一列端部的第一颜色子像素的侧边重合；2个沿第二方向相邻排布的第三颜色子像素(图中靠下的2个第三颜色子像素)的一侧边与2个沿第二方向相邻排布的第二颜色子像素的一侧边重合；2个沿第一方向相邻排布的第三颜色子像素(图中靠上的2个第三颜色子像素)的一侧边与第一列中的2个第二颜色子像素的一侧边重合，且一端与另外2个第三颜色子像素的侧边接触；2个沿第二方向相邻排布的第一颜色子像素(图中右下角的2个子像素)一端与2个沿第二方向相邻排布的第三颜色子像素的一端重合。
也就是说，各子像素优选按照上述描述排列成图1中所示的形式，这种形式在提高分辨率、改善显示效果、延长阵列基板使用寿命等方面都可达到较好的效果，是本发明的最优方案。
当然，应当理解，以上描述的排列方式仅代表重复单元中各子像素的相对位置关系，而不是绝对位置，故其等价变形也是本发明的保护范围。例如，若将重复单元进行水平翻转或竖直翻转(相应的第一方向和第二方向也翻转)，则所得的排列与上述排列实质上是相同的。或者，若选取阵列基板中的不同部分作为重复单元，则只要最终整个阵列基板中子像素的排布方式不变，则重复单元实质上仍相同；例如，图3中的重复单元看似与图1中的不同，但从图4可见，由其所组成的阵列基板中的子像素的排列方式(当然除去边缘的个别子像素)实际是与图2的阵列基板的子像素排列方式相同的，故二者实质上是相同的重复单元。
其中，本实施例的阵列基板的驱动方法(显示方法)是多样的，例如，可将其中每三个相邻近且不同颜色的子像素作为一个“像素”，并根据该像素需要显示的内容计算三个子像素的亮度；或 者，也可将阵列基板划分为多个区，根据每个区中不同颜色的子像素的面积比例计算各子像素的显示内容等；总之，其驱动方法在此不再详细描述。
实施例3：
本实施例提供了一种显示装置，其包括上述任意一种阵列基板。所述显示装置是有机发光二极管(OLED)显示装置，其具体可以为：电子纸、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。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (9)

  1. 一种有机发光二极管阵列基板，包括多个具有发光层的子像素，所述子像素包括按数量等分的第一颜色子像素、第二颜色子像素、第三颜色子像素，其中，
    所述第一颜色子像素为菱形；
    所述第二颜色子像素和第三颜色子像素为平行四边形，且它们的短边长度与第一颜色子像素的边长相等，长边长度均大于所述第一颜色子像素的边长。
  2. 根据权利要求1所述的有机发光二极管阵列基板，其中，
    每个所述子像素均有一组相对侧边平行于第一方向，另一组相对侧边平行于第二方向。
  3. 根据权利要求2所述的有机发光二极管阵列基板，其中，
    所述第二颜色子像素和第三颜色子像素的长边长度均为所述第一颜色子像素的边长的1.5倍。
  4. 根据权利要求3所述的有机发光二极管阵列基板，其中，
    所述阵列基板包括多个重复单元，每个重复单元中包括4个第一颜色子像素、4个第二颜色子像素、4个第三颜色子像素。
  5. 根据权利要求4所述的有机发光二极管阵列基板，其中，每个所述重复单元中，
    2个第二颜色子像素的长边平行于第一方向，另外2个第二颜色子像素的长边平行于第二方向；
    2个第三颜色子像素的长边平行于第一方向，另外2个第三颜色子像素的长边平行于第二方向。
  6. 根据权利要求5所述的有机发光二极管阵列基板，其中，每个所述重复单元中，
    2个第一颜色子像素沿第一方向相邻排布，另外2个第一颜色子像素沿第二方向相邻排布；
    所述2个长边平行于第一方向的第二颜色子像素沿第一方向相邻排布，所述2个长边平行于第二方向的第二颜色子像素沿第二方向相邻排布；
    所述2个长边平行于第一方向的第三颜色子像素沿第一方向相邻排布，所述2个长边平行于第二方向的第三颜色子像素沿第二方向相邻排布。
  7. 根据权利要求6所述的有机发光二极管阵列基板，其中，每个所述重复单元中，
    所述2个沿第一方向相邻排布的第二颜色子像素与所述2个沿第一方向相邻排布的第一颜色子像素排成第一列；
    所述2个沿第二方向相邻排布的第二颜色子像素一端与所述第一列端部的第一颜色子像素的侧边重合；
    所述2个沿第二方向相邻排布的第三颜色子像素的一侧边与所述2个沿第二方向相邻排布的第二颜色子像素的一侧边重合；
    所述2个沿第一方向相邻排布的第三颜色子像素的一侧边与所述第一列中的2个第二颜色子像素的一侧边重合，且一端与另外2个第三颜色子像素的侧边接触；
    所述2个沿第二方向相邻排布的第一颜色子像素一端与所述2个沿第二方向相邻排布的第三颜色子像素的一端重合。
  8. 根据权利要求1至7中任意一项所述的有机发光二极管阵列基板，其中，
    所述第一颜色为绿色；
    所述第二颜色和第三颜色中一个为红色，另一个为蓝色。
  9. 一种显示装置，包括：
    权利要求1至8中任意一项所述的有机发光二极管阵列基板。
PCT/CN2015/070888 2014-09-30 2015-01-16 有机发光二极管阵列基板、显示装置 WO2016050014A1 (zh)

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RU2678597C2 (ru) 2019-01-30
CN104377229A (zh) 2015-02-25
CN104377229B (zh) 2017-07-11
BR112015032778B1 (pt) 2021-08-03
RU2015156321A3 (zh) 2018-11-02
EP3203520B1 (en) 2020-05-13
RU2015156321A (ru) 2018-11-02
EP3203520A4 (en) 2018-07-11
MX362069B (es) 2019-01-07
US20160300892A1 (en) 2016-10-13

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