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WO2019206000A1 - 显示基板、显示基板的制作方法及显示装置 - Google Patents

显示基板、显示基板的制作方法及显示装置 Download PDF

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Publication number
WO2019206000A1
WO2019206000A1 PCT/CN2019/083013 CN2019083013W WO2019206000A1 WO 2019206000 A1 WO2019206000 A1 WO 2019206000A1 CN 2019083013 W CN2019083013 W CN 2019083013W WO 2019206000 A1 WO2019206000 A1 WO 2019206000A1
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Prior art keywords
sub
area
pixels
display
pixel
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PCT/CN2019/083013
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English (en)
French (fr)
Inventor
吕磊
韩波
徐飞
高杰
洪俊
朱久洋
张明伟
李京勇
徐春敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Hefei BOE Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Hefei BOE Optoelectronics Technology Co Ltd
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Priority to US16/611,956 priority Critical patent/US11233095B2/en
Publication of WO2019206000A1 publication Critical patent/WO2019206000A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a display substrate, a method of fabricating the display substrate, and a display device.
  • the display area of such products generally matches the border of the product, so the display area has an arc-shaped boundary (for example, four of the display area) Rounded corners).
  • Some embodiments of the present disclosure provide a display substrate including a plurality of sub-pixels arranged in a plurality of arrays of display regions, wherein the display regions include non-linearly extending boundaries, and the sub-pixels of the plurality of arrays include a plurality of first sub-pixels having a distance from the non-linearly extending boundary that is less than a predetermined threshold and a plurality of second sub-pixels other than the plurality of first sub-pixels, and at least one first sub-pixel The area is smaller than the area of each second sub-pixel.
  • an area of the plurality of first sub-pixels is smaller than an area of each second sub-pixel.
  • an area of the plurality of first sub-pixels gradually decreases along a direction in which a central area of the display area points to a non-linearly extending boundary of the display area.
  • the plurality of sub-pixels include sub-pixels of three colors, and form a plurality of pixel units arranged in an array, wherein each pixel unit includes three sub-arrays of different colors arranged in a row direction.
  • At least one of the plurality of first sub-pixels is formed in a direction along a direction in which the central area of the display area is directed to a non-linearly extending boundary of the display area
  • the pixel unit is gradually reduced in particle size.
  • the area of the first sub-pixel in the next pixel unit is smaller than the first sub-pixel in the previous pixel unit along a direction in which the central area of the display area points to a non-linearly extending boundary of the display area The area is reduced by 20%.
  • an area of the plurality of first sub-pixels gradually decreases along a longitudinal direction of the plurality of first sub-pixels.
  • an area of the plurality of first sub-pixels gradually decreases along a short side direction of the plurality of first sub-pixels.
  • an area of the plurality of first sub-pixels gradually decreases along a diagonal direction of the plurality of first sub-pixels.
  • the non-linearly extending boundary is a circular arc, and the area of the plurality of first sub-pixels gradually decreases along a radial direction of the non-linearly extending boundary.
  • the plurality of second sub-pixels have equal areas.
  • an area of the first sub-pixel having the smallest area among the plurality of first sub-pixels is 40% of an area of each second sub-pixel.
  • a length of a short side of the plurality of first sub-pixels is the same as or nearly the same as a length of a short side of the plurality of second sub-pixels, and each of the first sub-pixels is short
  • the edges are aligned or nearly aligned with the short sides of the second sub-pixel in the same column.
  • the plurality of first sub-pixels are sub-pixels having a shortest distance from the non-linearly extending boundary that is less than the predetermined threshold.
  • the plurality of first sub-pixels are all sub-pixels in the preset area, wherein the preset area is one and the determined according to the preset threshold in the display area.
  • Some embodiments of the present disclosure provide a method of fabricating a display substrate, the display area of the display substrate having a non-linearly extending boundary, and the manufacturing method includes:
  • first sub-pixels having a distance from the non-linearly extending boundary that is less than a predetermined threshold, and a plurality of second sub-pixels other than the plurality of first sub-pixels, at least The area of one first sub-pixel is smaller than the area of each second sub-pixel.
  • the fabricating the plurality of first sub-pixels includes:
  • a plurality of first sub-pixels whose area is gradually reduced are formed along a direction in which a central area of the display area is directed to a non-linearly extending boundary of the display area.
  • Some embodiments of the present disclosure provide a display device including the display substrate provided by any of the above embodiments of the present disclosure.
  • FIG. 1 is a schematic diagram of a display substrate according to some embodiments of the present disclosure
  • FIG. 2 is a schematic diagram of another display substrate according to some embodiments of the present disclosure.
  • FIG. 3 is a schematic diagram of a display display screen corresponding to a display substrate at a non-linearly extending boundary position according to some embodiments of the present disclosure
  • FIG. 4 is a schematic diagram of a display display screen corresponding to a display substrate in a non-linearly extending boundary position in the related art
  • FIG. 5 is a flowchart of a method of fabricating a display substrate according to some embodiments of the present disclosure.
  • the size of the sequence numbers of the following processes does not mean the order of execution sequence, and the order of execution of the plurality of processes should be determined by its function and internal logic, and should not be implemented in the embodiments of the present disclosure.
  • the process constitutes any limitation.
  • the sub-pixel area of the display product is rectangular, and the arrangement of the sub-pixels cannot completely match (ie, completely coincide) with the arc-shaped boundary of the display area, which causes the display screen of the arc boundary area to be displayed as a relatively obvious sawtooth.
  • the shape (which may also be granular) allows the user to observe the jagged image through the naked eye, which reduces the user's picture experience.
  • the technical solution provided by the embodiments of the present disclosure can solve the problem of the jagged image displayed by the display product whose display area does not match the sub-pixel shape.
  • Some embodiments of the present disclosure provide a display substrate including a plurality of sub-pixels (rectangular squares in FIG. 1) located in a display area as shown in FIG.
  • the display area includes a boundary 11 that is not linearly extended.
  • the display substrate includes the display area.
  • the non-linearly extending boundary 11 includes an arcuate boundary that does not match the shape of the sub-pixel.
  • a right-angled boundary (such as a right angle formed by the intersection of two boundaries) belongs to the non-linearly extending boundary 11 described above.
  • a right-angled boundary (such as a right angle formed by the intersection of two boundaries) does not belong to the non-linearly extending boundary 11 described above.
  • the sub-pixels arranged by the plurality of arrays include: a plurality of first sub-pixels 121 (a rectangular square shaded in FIG. 1 ) having a distance from the non-linearly extending boundary 11 that is less than a preset threshold, and a plurality of first sub-pixels Outside the second sub-pixel 122 (the rectangular square of the white of FIG. 1), the area of the at least one first sub-pixel 122 is smaller than the area of the second sub-pixel.
  • the first sub-pixel refers to an absolute distance from the non-linearly extending boundary 11 (the absolute distance is, for example, the shortest distance between the first sub-pixel and the non-linearly extending boundary 11) is less than a predetermined threshold. Subpixel.
  • an area adjacent to the non-linearly extending boundary 11 is determined according to a preset threshold, and all sub-pixels in the area are the first sub-pixel 121.
  • the second sub-pixel 122 is a sub-pixel for display other than the first sub-pixel in the display substrate, and all of the second sub-pixels 122 have the same area.
  • the technical solution in the above embodiment reduces the brightness of the first sub-pixel by reducing the area of the first sub-pixel near the non-linearly extending boundary of the display area, thereby reducing the non- The sudden change in brightness at the boundary of the straight line blurs the sawtooth image and improves the picture quality.
  • the technical solution in the above embodiment of the present disclosure only changes the size of the first sub-pixel, and no additional adjustment is needed for the data line, the scan line, and the black matrix, so the fabrication process is simple.
  • the display substrate is in the display region away from the non-linearly extending boundary 11 to a direction close to the non-linearly extending boundary 11 (the directions of the three arrows in FIG. 1 are As an example, the area of the first sub-pixel 121 is gradually reduced to achieve a transitional change in luminance.
  • the area of the plurality of first sub-pixels is gradually decreased along a direction in which the central area of the display area points to the non-linearly extending boundary 11 of the display area.
  • This design weakens the user's perception of the change in brightness at the boundary where the display screen is not linearly extended, so that the picture near the boundary 11 that is not linearly extended is more natural and soft, and the jaggedness is eliminated.
  • a plurality of sub-pixels (including a first sub-pixel and a second sub-pixel) of a display substrate in some embodiments of the present disclosure have three colors, that is, a plurality of sub-pixels of a display substrate.
  • the RGB is the base monochrome sub-pixel of the display substrate.
  • the plurality of sub-pixels in the display area form a plurality of arrayed pixel units, each of the pixel units including: three sub-pixels of different colors arranged in a row direction. That is, three RGB monochrome sub-pixels in the lateral direction form one pixel unit.
  • the area of the plurality of first sub-pixels is formed by the first sub-pixel in a direction away from the non-linearly extending boundary 11 to a direction close to the non-linearly extending boundary 11 in the display region. At least one of the pixel units is gradually reduced in particle size.
  • the area of the plurality of first sub-pixels 121 is in the direction of the non-linearly extending boundary 11 of the display area along the central area of the display area. At least one pixel unit formed by one sub-pixel 121 is gradually reduced in particle size.
  • the area of the first sub-pixel having the smallest area among the plurality of first sub-pixels is 40% of the area of the second sub-pixel.
  • the area of the first sub-pixel of the next pixel unit is smaller than the area of the first sub-pixel of the previous pixel unit in a direction away from the non-linearly extending boundary to a direction close to the non-linearly extending boundary. %.
  • the area of the first sub-pixel in the next pixel unit is smaller than the first sub-pixel in the previous pixel unit along a direction in which the central area of the display area points to a non-linearly extending boundary of the display area The area is reduced by 20%.
  • the brightness change effect as shown in FIG. 3 is visually presented.
  • the brightness transition of the picture on the non-linearly extending boundary of FIG. 3 is more natural, and the jaggedness of the position is weakened.
  • the area of the plurality of first sub-pixels 121 decreases in a direction along a direction in which the central area of the display area is directed to the non-linearly extending boundary 11 of the display area.
  • the plurality of first sub-pixel areas are respectively 95%, 80%, 75%, 60 of the central area sub-pixel area. %.
  • the plurality of first sub-pixel areas are respectively 90%, 80%, 80% of the sub-pixel area of the central area. 60%.
  • the display picture Since the area of the first sub-pixel is changed compared to the second sub-pixel, the display picture is prone to mura (non-uniform) phenomenon.
  • the area of the plurality of first sub-pixels 121 gradually decreases along the longitudinal direction of the plurality of first sub-pixels 121.
  • the area of the plurality of first sub-pixels 121 gradually decreases along the short side direction of the plurality of first sub-pixels 121.
  • the area of the plurality of first sub-pixels 121 gradually decreases along a diagonal direction of the plurality of first sub-pixels 121.
  • the non-linearly extending boundary 11 is a circular arc, and the area of the plurality of first sub-pixels 121 gradually decreases along the radial direction of the non-linearly extending boundary 11.
  • the length L1 of the short side of the first sub-pixel is the same as or the length L2 of the short side of the second sub-pixel. Near the same, and the short side of the first sub-pixel is aligned or nearly aligned with the short side of the second sub-pixel in the same column.
  • Some embodiments of the present disclosure provide a method of fabricating a display substrate, wherein the display substrate includes a plurality of sub-pixels located in a display area, the display area having a non-linearly extending boundary. As shown in FIG. 5, the manufacturing method includes step 110.
  • step 110 in the display area, a plurality of first sub-pixels having a distance from the non-linearly extending boundary less than a preset threshold and a plurality of the plurality of first sub-pixels The two sub-pixels, wherein the area of the at least one first sub-pixel is smaller than the area of each second sub-pixel.
  • the manufacturing method in the above embodiments can produce the display substrate provided by any of the above embodiments of the present disclosure. Therefore, the technical effects of the display substrate can be achieved in the same manner.
  • the step of fabricating the plurality of first sub-pixels includes: making a plurality of areas in a direction away from the non-linearly extending boundary to a direction close to the non-linearly extending boundary in the display area The first sub-pixel is gradually reduced.
  • the step of fabricating the plurality of first sub-pixels includes: creating a plurality of directions along a direction in which the central area of the display area points to a non-linearly extending boundary of the display area in the display area The first sub-pixel whose area is gradually decreasing.
  • the position of the first sub-pixel is 20% of the area of the second sub-pixel closest to the position of the non-linearly extending boundary 11, in a direction away from the non-linearly extending boundary 11 or a non-display area
  • the boundary of the straight line is directed to the direction of the central area of the display area, and the first sub-pixel area is gradually increased, that is, the area of the first sub-pixel is the second sub-pixel in a direction away from the non-linearly extending boundary 11 40%, 60% and 80% of the area.
  • the area of the pixel electrodes of the plurality of first sub-pixels fabricated in some embodiments of the present disclosure is smaller than the pixel electrode area of each of the second sub-pixels.
  • the fabrication method includes using magnetron sputtering, thermal evaporation, Plasma Enhanced Chemical Vapor Deposition (PECVD), or other film formation methods before the display substrate is fabricated into the pixel electrode.
  • Deposition thickness is 2000 ⁇ 1000
  • the passivation layer is planarized to ensure that the subsequently formed pixel electrode has a small step difference.
  • the fabrication material of the passivation layer includes an oxide, a nitride, or an oxynitride.
  • the material of the passivation layer is SiNx, SiOx or Si(ON)x.
  • the material of the passivation layer includes Al 2 O 3 .
  • the passivation layer is a single layer structure.
  • the passivation layer is a two-layer structure composed of silicon nitride and silicon oxide.
  • the reaction gas corresponding to the oxide of silicon is SiH 4 , N 2 O
  • the reaction gas corresponding to the nitride or the oxynitride is SiH 4 , NH 3 , N 2 or SiH 2 Cl 2 , NH 3 . , N 2 .
  • a pattern of a passivation layer including vias is formed by one patterning process. For example, coating the passivation layer with a thickness of about 4,000 to 30,000
  • the organic resin such as benzocyclobutene (BCB) or other organic photosensitive material, is formed into a pattern of a passivation layer having a pixel electrode via by an etching process after exposure and development.
  • a thickness of about 300 to 1500 is deposited by sputtering or thermal evaporation.
  • the transparent conductive layer such as ITO, IZO or other transparent metal oxide, is coated with a layer of photoresist on the transparent conductive layer, and the photoresist is exposed by a mask to form a photoresist.
  • the photoresist has no remaining areas and photoresist retention areas.
  • an opening corresponding to the sub-pixel size is formed on the mask.
  • the mask in some embodiments of the present disclosure includes an opening corresponding to the first sub-pixel, and an opening corresponding to the second sub-pixel, wherein an area of the opening corresponding to the first sub-pixel is smaller than The area corresponding to the opening of the second sub-pixel.
  • the photoresist retention area corresponds to a region where the pixel electrode is located, the region includes a photoresist retention region corresponding to the first sub-pixel to be formed, and a photoresist retention region corresponding to the second sub-pixel to be formed.
  • the photoresist in the unretained region of the photoresist is completely removed, and the thickness of the photoresist in the photoresist remaining region remains unchanged.
  • the transparent conductive layer film of the unretained region of the photoresist is completely etched away by an etching process, and the remaining photoresist is stripped to form a pattern of the pixel electrode of the first sub-pixel and a pixel electrode of the second sub-pixel.
  • the pixel electrodes are connected to the drain electrode on which the display substrate has been formed through the via holes of the flat layer.
  • the fabrication method in the above embodiments of the present disclosure improves only the mask for forming the pixel electrode, does not add an additional process, and therefore does not reduce the production efficiency of the display substrate, and is easy to implement.
  • Some embodiments of the present disclosure provide a display device including the display substrate provided by any of the above embodiments of the present disclosure. Therefore, the display device of the present embodiment can also be realized by the technical effects that can be realized by the display substrate.
  • the area of the sub-pixels of the display device provided by the embodiment in the non-linearly extending boundary near the display area is lower than the area of the remaining sub-pixels, which weakens the appearance of the display image of the area.
  • the sense of jaggedness improves the display quality of the picture and improves the user experience.
  • the display substrate in some embodiments of the present disclosure is a single substrate structure (for example, applied to an organic light emitting diode display product), or a structure in a display panel of a double substrate to a box (for example, applied to a liquid crystal display product).
  • the display device in some embodiments of the present disclosure is any product or component having a display function, such as a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet computer, etc., for example, a display product having a high screen ratio, such as a full screen display device and Smart wearable devices, etc.
  • a display product having a high screen ratio such as a full screen display device and Smart wearable devices, etc.
  • the display area of such products almost occupies the entire display surface, so the boundary of the display area matches the border of the product, resulting in the display area often having non-linearly extending boundaries (such as the four rounded borders of the display area and the display area setting camera)
  • the "head curtain" boundary) cannot match the sub-pixels of the rectangle.
  • the display device in the above embodiment of the present disclosure reduces the sawtooth sensation appearing on the display screen of the region by reducing the brightness of the sub-pixels near the non-linearly extending boundary of the display region, thereby improving the display quality of the screen and improving the user's display quality.
  • the feeling is improved.

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Abstract

提供了一种显示基板、显示基板的制作方法及显示装置。显示基板包括位于显示区域的多个阵列排布的亚像素。显示区域包括非直线延伸的边界。所述多个阵列排布的亚像素包括与所述非直线延伸的边界的距离小于预设阈值的多个第一亚像素和除所述多个第一亚像素之外的多个第二亚像素，至少一个第一亚像素的面积小于每个第二亚像素的面积。

Description

显示基板、显示基板的制作方法及显示装置
相关申请的交叉引用
本申请主张在2018年4月26日在中国提交的中国专利申请号No.201810386617.X的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及显示技术领域，特别是指一种显示基板、显示基板的制作方法及显示装置。
背景技术
随着显示技术和智能终端的迅速发展，显示产品的屏占比被制作得越来越高。以相关技术中的高屏占比的全屏显示设备和智能穿戴显示设备为例，这类产品的显示区域普遍与产品的边框相匹配，因此显示区域具有圆弧状的边界(例如显示区域的四个圆角)。
发明内容
本公开的一些实施例提供一种显示基板，包括位于显示区域的多个阵列排布的亚像素，其中，所述显示区域包括非直线延伸的边界，所述多个阵列排布的亚像素包括与所述非直线延伸的边界的距离小于预设阈值的多个第一亚像素和除所述多个第一亚像素之外的多个第二亚像素，以及，至少一个第一亚像素的面积小于每个第二亚像素的面积。
本公开一些实施例中，所述多个第一亚像素的面积均小于每个第二亚像素的面积。
本公开一些实施例中，在所述显示区域内，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界的方向，所述多个第一亚像素的面积逐渐减小。
本公开一些实施例中，所述多个亚像素包括三种颜色的亚像素，并形成多个阵列排布的像素单元，其中，每个像素单元包括三个沿行方向排列的不 同颜色的亚像素；
在所述显示区域内，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界的方向，所述多个第一亚像素的面积以多个第一亚像素形成的至少一个像素单元为粒度逐渐减小。
本公开一些实施例中，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界的方向，下一像素单元中第一亚像素的面积比上一像素单元中第一亚像素的面积减小20％。
本公开一些实施例中，沿所述多个第一亚像素的长边方向，所述多个第一亚像素的面积逐渐减小。
本公开一些实施例中，沿所述多个第一亚像素的短边方向，所述多个第一亚像素的面积逐渐减小。
本公开一些实施例中，沿所述多个第一亚像素的对角线方向，所述多个第一亚像素的面积逐渐减小。
本公开一些实施例中，所述非直线延伸的边界为圆弧，沿所述非直线延伸的边界的径向方向，所述多个第一亚像素的面积逐渐减小。
本公开一些实施例中，所述多个第二亚像素的面积均相等。
本公开一些实施例中，所述多个第一亚像素中面积最小的第一亚像素的面积为每个第二亚像素的面积的40％。
本公开一些实施例中，所述多个第一亚像素的短边的长度与所述多个第二亚像素的短边的长度相同或趋近于相同，且每个第一亚像素的短边与其同一列中的第二亚像素的短边对齐或趋近于对齐。
本公开一些实施例中，所述多个第一亚像素是与所述非直线延伸的边界之间的最短距离小于所述预设阈值的亚像素。
本公开一些实施例中，所述多个第一亚像素是预设区域内所有的亚像素，其中，所述预设区域是所述显示区域内根据所述预设阈值确定的一与所述非直线延伸的边界相邻的区域。
本公开的一些实施例提供一种显示基板的制作方法，所述显示基板的显示区域具有非直线延伸的边界，所述制作方法包括：
在所述显示区域内，制作与所述非直线延伸的边界的距离小于预设阈值 的多个第一亚像素和除所述多个第一亚像素之外的多个第二亚像素，至少一个第一亚像素的面积小于每个第二亚像素的面积。
本公开一些实施例中，制作所述多个第一亚像素包括：
在所述显示区域内，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界的方向，制作多个面积逐渐减小的第一亚像素。
本公开的一些实施例提供一种显示装置，包括本公开上述任一实施例提供的显示基板。
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图1为本公开一些实施例提供的显示基板的示意图；
图2为本公开一些实施例提供的另一显示基板的示意图；
图3为本公开一些实施例提供的显示基板对应的显示显示画面在非直线延伸的边界位置的示意图；
图4为相关技术中的显示基板对应的显示显示画面在非直线延伸的边界位置的示意图；以及
图5为本公开一些实施例提供的显示基板的制作方法的流程图。
具体实施方式
为使本公开的技术方案更加清楚，下面将结合附图及一些实施例进行详细描述。在下面的描述中，提供诸如具体的配置和组件的一些细节仅仅是为了帮助全面理解本公开的实施例。因此，本领域技术人员应该清楚，可以对这里描述的实施例进行多种改变和修改。
应理解，说明书通篇中提到的“一个实施例”或“一些实施例”意味着与实施例有关的特征、结构或特性包括在本公开的至少一个实施例中。因此，在整个说明书中出现的“在一个实施例中”或“在一些实施例中”未必一定指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。
在本公开的实施例中，下述多个过程的序号的大小并不意味着执行顺序的先后，多个过程的执行顺序应以其功能和内在逻辑确定，而不应对本公开 实施例的实施过程构成任何限定。
相关技术中，显示产品的亚像素区域呈矩形，亚像素的排列无法与显示区域的圆弧状的边界完全匹配(即完全重合)，这导致圆弧边界区域的显示画面显示为较为明显的锯齿状(也可以是颗粒状)，用户通过肉眼能够观察到该锯齿状画面，降低了用户的画面体验。本公开实施例提供的技术方案能够解决显示区域的边界与亚像素形状不匹配的显示产品所显示出的具有锯齿感的画面的问题。
本公开的一些实施例提供一种显示基板，如图1所示，所述显示基板包括位于显示区域的多个亚像素(图1中的矩形方格)。显示区域包括非直线延伸的边界11。所述显示基板包括所述显示区域。
作为示例性介绍，该非直线延伸的边界11包括：与亚像素形状不匹配的圆弧状的边界。
一些实施例中，呈直角的边界(如两个边界相交形成的直角)属于上述非直线延伸的边界11。
一些实施例中，呈直角的边界(如两个边界相交形成的直角)不属于上述非直线延伸的边界11。
所述多个阵列排布的亚像素包括：与非直线延伸的边界11的距离小于预设阈值的多个第一亚像素121(图1阴影的矩形方格)和除多个第一亚像素之外的第二亚像素122(图1白色的矩形方格)，至少一个第一亚像素122的面积小于第二亚像素的面积。
本公开一些实施例中，第一亚像素是指与非直线延伸的边界11的绝对距离(绝对距离例如是第一亚像素与非直线延伸的边界11之间的最短距离)小于一预设阈值的亚像素。
本公开一些实施例中，根据预设阈值确定一与非直线延伸的边界11相邻的区域，该区域内的所有亚像素为第一亚像素121。
第二亚像素122为显示基板中除第一亚像素外的用于显示的亚像素，所有第二亚像素122的面积均相等。
由于亚像素的亮度和面积成正比，上述实施例中的技术方案通过减小靠近显示区域的非直线延伸的边界的第一亚像素的面积，降低了第一亚像素的 亮度，从而减小非直线延伸的边界处的亮度突变，模糊化锯齿感画面，提升了画面显示质量。
本公开上述实施例中的技术方案仅是改变了第一亚像素的大小，对于数据线、扫描线以及黑矩阵都不需要额外调整，因此制作过程简单。
本公开一些实施例中，如图1所示，所述显示基板在显示区域内，远离非直线延伸的边界11到靠近非直线延伸的边界11的方向上(图1中三个箭头的方向为示例)，第一亚像素121的面积逐渐减小，以实现亮度的过渡变化。
本公开一些实施例中，在所述显示区域内，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界11的方向，所述多个第一亚像素的面积逐渐减小。
该设计弱化了用户对显示画面非直线延伸的边界处亮度变化的感知，使非直线延伸的边界11附近的画面更加自然、柔和，消除锯齿感。
作为示例性介绍，如图2所示，本公开一些实施例中的显示基板的多个亚像素(包括第一亚像素和第二亚像素)具有三种颜色，即显示基板的多个亚像素由红色亚像素R、绿色亚像素G以及蓝色亚像素B。该RGB是显示基板的基础单色亚像素。
本公开一些实施例中，所述显示区域内的多个亚像素形成多个阵列排布的像素单元，每个像素单元包括：三个沿行方向排列的不同颜色的亚像素。即横向上的RGB三个单色亚像素形成一个像素单元。
本公开一些实施例中，在所述显示区域内，远离非直线延伸的边界11到靠近非直线延伸的边界11的方向上，所述多个第一亚像素的面积以第一亚像素形成的至少一个像素单元为粒度逐渐减小。
本公开一些实施例中，在所述显示区域内，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界11的方向，所述多个第一亚像素121的面积以第一亚像素121形成的至少一个像素单元为粒度逐渐减小。
基于所述多个第一亚像的素结构设计，保证了一个由第一亚像素组成的像素单元中的RGB三个基础单色亚像素的面积同时减小，从而每个像素单元中多个单色亚像素的面积相同，避免了在显示画面上出现色偏现象。
本公开一些实施例中，多个第一亚像素中具有最小面积的第一亚像素的 面积为第二亚像素的面积的40％。
本公开一些实施例中，远离非直线延伸的边界到靠近非直线延伸的边界的方向上，下一像素单元的第一亚像素的面积比上一像素单元的第一亚像素的面积减小20％。
本公开一些实施例中，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界的方向，下一像素单元中第一亚像素的面积比上一像素单元中第一亚像素的面积减小20％。
上述实施例中，第一亚像素的面积有规律地减小20％时，在视觉上呈现如图3所示的亮度变化效果。相比于图4中相关技术中显示基板的显示画面在非直线延伸的边界位置处的画面，图3在非直线延伸的边界上画面的亮度过渡更自然，弱化了该位置的锯齿感。
本公开一些实施例中，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界11的方向，多个第一亚像素121的面积减小的幅度无规律。
例如，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界11的方向，多个第一亚像素面积分别为中心区域亚像素面积的95％、80％、75％、60％。
再例如，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界11的方向，多个第一亚像素面积分别为中心区域亚像素面积的90％、80％、80％、60％。
由于第一亚像素相较于第二亚像素，面积发生了变化，显示画面容易出现mura(不均匀)现象。
本公开一些实施例中，沿多个第一亚像素121的长边方向，多个第一亚像素121的面积逐渐减小。
本公开一些实施例中，沿多个第一亚像素121的短边方向，多个第一亚像素121的面积逐渐减小。
本公开一些实施例中，沿多个第一亚像素121的对角线方向，多个第一亚像素121的面积逐渐减小。
本公开一些实施例中，非直线延伸的边界11为圆弧，沿非直线延伸的边界11的径向方向，多个第一亚像素121的面积逐渐减小。
本公开一些实施例中，如图2所示，第一亚像素的短边(即平行或趋近于平行行方向的边)的长度L1与第二亚像素的短边的长度L2相同或趋近于相同，且第一亚像素的短边与其同一列中的第二亚像素的短边对齐或趋近于对齐。
上述实施例中，仅改变第一亚像素长边的长度，而短边长度不变或变化不大，保证同一颜色的列方向亚像素保持对齐，避免了显示画面出现列方向的Mura现象。
本公开的一些实施例提供一种显示基板的制作方法，其中，该显示基板包括位于显示区域的多个亚像素，显示区域具有非直线延伸的边界。如图5所示，所述制作方法包括步骤110。
在步骤110中，在所述显示区域内，制作与所述非直线延伸的边界的距离小于预设阈值的多个第一亚像素和除所述多个第一亚像素之外的多个第二亚像素，其中，至少一个第一亚像素的面积小于每个第二亚像素的面积。
上述实施例中的制作方法能够制作本公开上述任一实施例所提供的显示基板，因此该显示基板所能实现的技术效果，本实施例的制作方法也同样能够实现。
本公开一些实施例中，制作所述多个第一亚像素的步骤包括：在显示区域内，远离所述非直线延伸的边界到靠近所述非直线延伸的边界的方向上，制作多个面积逐渐减小的第一亚像素。
本公开一些实施例中，制作所述多个第一亚像素的步骤包括：在显示区域内，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界的方向，制作多个面积逐渐减小的第一亚像素。
作为示例性介绍，最靠近非直线延伸的边界11的位置，第一亚像素的面积为第二亚像素面积的20％，在远离非直线延伸的边界11的方向上或所述显示区域的非直线延伸的边界指向所述显示区域的中心区域的方向，第一亚像素面积逐渐增大，即，在远离非直线延伸的边界11的方向上，第一亚像素的面积为以第二亚像素面积的40％、60％以及80％。本公开一些实施例中制作的多个第一亚像素的像素电极的面积小于每个第二亚像素的像素电极面积。
本公开一些实施例中，在显示基板制作像素电极之前，所述制作方法包 括采用磁控溅射、热蒸发、等离子体增强化学气相沉积法(Plasma Enhanced Chemical Vapor Deposition，PECVD)或其它成膜方法沉积厚度为2000～1000
Figure PCTCN2019083013-appb-000001
的钝化层，该钝化层为平坦化设置，保证后续形成的像素电极具有较小的段差。
本公开一些实施例中，钝化层的制作材料包括氧化物、氮化物或者氧氮化合物。
本公开一些实施例中，钝化层的制作材料包括SiNx，SiOx或Si(ON)x。
本公开一些实施例中，钝化层的材料包括Al 2O 3。
本公开一些实施例中，钝化层是单层结构。
本公开一些实施例中，钝化层是采用氮化硅和氧化硅构成的两层结构。
本公开一些实施例中，硅的氧化物对应的反应气体为SiH 4，N 2O，氮化物或者氧氮化合物对应的反应气体是SiH 4，NH 3，N 2或SiH 2Cl 2，NH 3，N 2。
本公开一些实施例中，通过一次构图工艺形成包括有过孔的钝化层的图形。例如，在钝化层上涂覆一层厚度约为4000～30000
Figure PCTCN2019083013-appb-000002
的有机树脂，有机树脂例如是苯并环丁烯(BCB)或者是其他的有机感光材料，曝光显影后，通过一次刻蚀工艺形成有像素电极过孔的钝化层的图形。
形成包括有过孔的钝化层的图形之后，通过溅射或热蒸发的方法沉积厚度约为300～1500
Figure PCTCN2019083013-appb-000003
的透明导电层，透明导电层例如是ITO、IZO或者其他的透明金属氧化物，在透明导电层上涂覆一层光刻胶，采用掩膜板对光刻胶进行曝光，使光刻胶形成光刻胶未保留区域和光刻胶保留区域。
其中，掩膜板上形成有对应亚像素尺寸的开口。
不同于相关技术中的掩膜版，本公开一些实施例中的掩膜板包括对应第一亚像素的开口，以及对应第二亚像素的开口，其中，对应第一亚像素的开口的面积小于对应第二亚像素的开口的面积。在曝光完成后，光刻胶保留区域对应于像素电极所在区域，该区域包括对应待形成的第一亚像素的光刻胶保留区域，以及对应待形成的第二亚像素的光刻胶保留区域。
在曝光完成后，进行显影处理，光刻胶未保留区域的光刻胶被完全去除，光刻胶保留区域的光刻胶厚度保持不变。之后，通过刻蚀工艺完全刻蚀掉光刻胶未保留区域的透明导电层薄膜，剥离剩余的光刻胶，形成第一亚像素的 像素电极的图形以及第二亚像素的像素电极的图形，这些像素电极通过上述平坦层的过孔与显示基板已形成的漏电极连接。
本公开上述实施例中的制作方法仅对形成像素电极的掩膜板进行了改进，并不会增加额外的工序，因此不会降低显示基板的生产效率，具有易实施性。
本公开的一些实施例提供一种显示装置，该显示装置包括有本公开上述任一实施例所提供的显示基板。因此该显示基板所能实现的技术效果，本实施例的显示装置同样也能够实现。
基于本公开上述实施例所提供的显示基板，本实施例提供的显示装置在靠近显示区域的非直线延伸的边界的亚像素的面积低于其余亚像素的面积，弱化了该区域显示画面所出现的锯齿感，提高了画面的显示品质，改善了用户的体验感受。
本公开一些实施例中的显示基板是单基板结构(例如应用于有机发光二极管显示产品)，或者是双基板对盒而成的显示面板中的结构(例如应用于液晶显示产品)。
本公开一些实施例中的显示装置是液晶电视、液晶显示器、数码相框、手机、平板电脑等任何具有显示功能的产品或部件，例如是指具有高屏占比的显示产品，例如全屏显示设备和智能穿戴设备等。这类产品的显示区域由于近乎占据着整个显示表面，因此显示区域边界与产品的边框相匹配，导致显示区域往往具有非直线延伸的边界(如显示区域的四个圆角边界以及显示区域设置摄像头的“齐头帘”边界)，而无法与矩形的亚像素相匹配。
本公开上述实施例中的显示装置通过降低靠近显示区域的非直线延伸的边界的亚像素的亮度，弱化了该区域显示画面所出现的锯齿感，从而提高了画面的显示品质，改善了用户的体验感受。
以上所述是本公开的一些实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以作出若干改进和润饰。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用“包括”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件 或者物件及其等同，而不排除其他元件或者物件。

Claims (17)

  1. 一种显示基板，包括位于显示区域的多个阵列排布的亚像素，其中，所述显示区域包括非直线延伸的边界，所述多个阵列排布的亚像素包括与所述非直线延伸的边界的距离小于预设阈值的多个第一亚像素和除所述多个第一亚像素之外的多个第二亚像素，以及，至少一个第一亚像素的面积小于每个第二亚像素的面积。
  2. 根据权利要求1所述的显示基板，其中，
    所述多个第一亚像素的面积均小于每个第二亚像素的面积。
  3. 根据权利要求1所述的显示基板，其中，
    在所述显示区域内，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界的方向，所述多个第一亚像素的面积逐渐减小。
  4. 根据权利要求3所述的显示基板，其中，
    所述多个亚像素包括三种颜色的亚像素，并形成多个阵列排布的像素单元，其中，每个像素单元包括三个沿行方向排列的不同颜色的亚像素；
    在所述显示区域内，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界的方向，所述多个第一亚像素的面积以多个第一亚像素形成的至少一个像素单元为粒度逐渐减小。
  5. 根据权利要求4所述的显示基板，其中，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界的方向，下一像素单元中第一亚像素的面积比上一像素单元中第一亚像素的面积减小20％。
  6. 根据权利要求3所述的显示基板，其中，沿所述多个第一亚像素的长边方向，所述多个第一亚像素的面积逐渐减小。
  7. 根据权利要求3所述的显示基板，其中，沿所述多个第一亚像素的短边方向，所述多个第一亚像素的面积逐渐减小。
  8. 根据权利要求3所述的显示基板，其中，沿所述多个第一亚像素的对角线方向，所述多个第一亚像素的面积逐渐减小。
  9. 根据权利要求3所述的显示基板，其中，所述非直线延伸的边界为圆弧，沿所述非直线延伸的边界的径向方向，所述多个第一亚像素的面积逐渐 减小。
  10. 根据权利要求3-9中任一所述的显示基板，其中，所述多个第二亚像素的面积均相等。
  11. 根据权利要求10所述的显示基板，其中，
    所述多个第一亚像素中面积最小的第一亚像素的面积为每个第二亚像素的面积的40％。
  12. 根据权利要求1所述的显示基板，其中，
    所述多个第一亚像素的短边的长度与所述多个第二亚像素的短边的长度相同或趋近于相同，且每个第一亚像素的短边与其同一列中的第二亚像素的短边对齐或趋近于对齐。
  13. 根据权利要求1所述的显示基板，其中，所述多个第一亚像素是与所述非直线延伸的边界之间的最短距离小于所述预设阈值的亚像素。
  14. 根据权利要求1所述的显示基板，其中，所述多个第一亚像素是预设区域内所有的亚像素，其中，所述预设区域是所述显示区域内根据所述预设阈值确定的一与所述非直线延伸的边界相邻的区域。
  15. 一种显示基板的制作方法，所述显示基板的显示区域具有非直线延伸的边界，所述制作方法包括：
    在所述显示区域内，制作与所述非直线延伸的边界的距离小于预设阈值的多个第一亚像素和除所述多个第一亚像素之外的多个第二亚像素，至少一个第一亚像素的面积小于每个第二亚像素的面积。
  16. 根据权利要求15所述的显示基板的制作方法，其中，制作所述多个第一亚像素包括：
    在所述显示区域内，沿所述显示区域的中心区域指向所述显示区域的非直线延伸的边界的方向，制作多个面积逐渐减小的第一亚像素。
  17. 一种显示装置，包括如权利要求1-14中任一项所述的显示基板。
PCT/CN2019/083013 2018-04-26 2019-04-17 显示基板、显示基板的制作方法及显示装置 Ceased WO2019206000A1 (zh)

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