WO2019015307A1 - 显示基板、显示面板及显示装置 - Google Patents

显示基板、显示面板及显示装置 Download PDF

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Publication number
WO2019015307A1
WO2019015307A1 PCT/CN2018/075729 CN2018075729W WO2019015307A1 WO 2019015307 A1 WO2019015307 A1 WO 2019015307A1 CN 2018075729 W CN2018075729 W CN 2018075729W WO 2019015307 A1 WO2019015307 A1 WO 2019015307A1
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WO
WIPO (PCT)
Prior art keywords
substrate
filter unit
layer
display
color filter
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PCT/CN2018/075729
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English (en)
French (fr)
Inventor
姜晶晶
汪栋
宋勇志
万冀豫
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/077,990 priority Critical patent/US11243425B2/en
Publication of WO2019015307A1 publication Critical patent/WO2019015307A1/zh

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    • 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
    • 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
    • G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/133357—Planarisation layers
    • 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
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13454—Drivers integrated on the active matrix substrate
    • 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
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13458—Terminal pads

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a display substrate, a display panel, and a display device.
  • LCDs liquid crystal display devices
  • PDPs plasma display devices
  • ELDs electroluminescence display devices
  • VFDs vacuum fluorescent display devices
  • liquid crystal display devices Due to its low power consumption, low cost, no radiation and easy operation, liquid crystal display devices have been widely used in various fields, such as homes, public places, office places and personal electronic related products. Liquid crystal display devices have also evolved from the original black and white display devices to today's color display devices, the most important of which is the addition of color filters, which have also evolved from the initial RGB form to the RGBW form. For RGBW-type color filters, it is common practice to form a transparent filter between two color filter units composed of RGB to form a white filter unit. However, since this method is costly, it is generally straightforward. A blank area is formed between the two color filter units to form a white filter unit.
  • a blank area is formed directly between the two color filter units to form a white filter unit. Due to the presence of the blank area, the light transmittance of the blank area is higher than that of the color filter unit, which is likely to cause display.
  • the brightness is not uniform, and when a flat layer is formed on the color filter, the step is large due to the presence of the blank region, and the flat layer is liable to be broken.
  • an embodiment of the present disclosure provides a display substrate including a substrate substrate, a color filter layer and a black matrix on the substrate, and a flat layer, the color filter layer A plurality of color filter units including a blank area, the black matrix is located between the color filter unit and the white filter unit, the color
  • the filter layer further includes a pad upper layer, wherein the pad upper layer is located in the blank region, and an orthographic projection of the pad layer on the substrate substrate is located in an orthographic projection of the blank region on the substrate substrate And less than an orthographic projection of the blank region on the substrate.
  • the height of the upper surface of the upper layer of the mat is the same as the height of the upper surface of the color filter unit.
  • the height of the pad is strip-shaped, and the white filter unit is divided into two parts of equal area.
  • the white filter unit is divided into four parts of equal area.
  • the high layer of the pad is the same as the material of the black matrix, and a side of the pad is away from a side of the substrate, and is flush with a side of the color filter unit away from the substrate.
  • a side of the upper layer of the pad away from the substrate substrate and a side of the black matrix away from the substrate are flush with a side of the color filter layer where the color filter unit is away from the substrate.
  • the high layer of the pad comprises a light shielding layer and a support layer, the light shielding layer is stacked with the support layer, and the light shielding layer is located between the support layer and the base substrate.
  • the light shielding layer is in the same layer as the black matrix, and the materials are the same.
  • the support layer is in the same layer as the color filter unit and has the same material.
  • the display substrate further includes a common electrode between the color filter layer and the common electrode, and an alignment film located at the common electrode away from the color filter layer One side.
  • the color filter unit is spaced apart from the white filter unit and arranged in a matrix, and a blank area is disposed between two adjacent color filter units to form the white filter unit.
  • the color filter unit includes a red filter unit, a green filter unit, and a blue filter unit, and the red filter unit, the green filter unit, and the blue filter unit are sequentially arranged to form the color. Filter unit.
  • the black matrix is disposed between the color filter unit and the white filter unit on a side of the color filter layer adjacent to the substrate, and the red filter unit is The black matrix is also disposed between the green filter units and between the green filter unit and the blue filter unit.
  • the present disclosure further provides a display panel, the display panel includes the display substrate, the opposite substrate, the liquid crystal layer, and the plastic frame, wherein the display substrate is opposite to the opposite substrate, the liquid crystal layer and the The plastic frame is sandwiched between the display substrate and the opposite substrate, and the liquid crystal layer is received in the cavity surrounded by the display substrate, the opposite substrate and the plastic frame.
  • the present disclosure further provides a display device, including the display panel and the backlight module, wherein the display panel and the backlight module are stacked to form a display module of the display device, and the display
  • the device includes a display area for realizing a display output function of the display device, the display area for arranging a trace, and the plastic frame corresponding to the display In the peripheral zone of the device.
  • the display substrate, the display panel and the display device provided by the embodiments of the present disclosure are provided with a high-rise layer in a blank area of the white filter unit, such that the orthographic projection of the upper layer of the pad on the substrate is located on the substrate in the blank area. And less than the orthographic projection of the blank area on the substrate. In this way, dividing the blank area into several small areas through the upper layer of the pad can not only improve the flatness of the flat layer after coating, but also reduce the light transmittance of the white filter unit while reducing the white filter unit.
  • the aperture ratio is such that the white filter unit is consistent with the brightness of the color filter unit.
  • FIG. 1 is a perspective view of a display device according to an embodiment of the present disclosure
  • Figure 2 is a partial cross-sectional view of the display panel shown at II-II of Figure 1;
  • Figure 3 is a partial plan view of the display substrate shown in Figure 2;
  • FIG. 4 is a partial plan view of a display substrate in another embodiment of the present disclosure.
  • FIG. 5 is a partial plan view of a display substrate in still another embodiment of the present disclosure.
  • FIG. 6 is a partial cross-sectional view showing a display substrate in still another embodiment of the present disclosure.
  • Figure 7 is a partial cross-sectional view showing a display substrate in still another embodiment of the present disclosure.
  • FIG. 1 is a perspective view of a display device according to an embodiment of the present disclosure.
  • the display device 100 includes a display panel 10 and a backlight module 20 , and the display panel 10 and the backlight module 20 are stacked to form a display module of the display device 100 to implement The display function of the display device 100.
  • the display device 100 includes a display area 101 and a peripheral area 102 surrounding the display area 101.
  • the display area 101 is mainly used to implement a display output function of the display apparatus 100, and the peripheral area 102 is mainly used for layout. Trace and so on.
  • FIG. 2 is a partial cross-sectional view of the display panel shown in II-II of FIG.
  • the display panel 10 further includes a display substrate 11 , a counter substrate 12 , a liquid crystal layer 13 , and a plastic frame 14 .
  • the display substrate 11 is disposed opposite to the opposite substrate 12 , and the liquid crystal layer 13 is disposed.
  • the plastic frame 14 is sandwiched between the display substrate 11 and the opposite substrate 12, and the liquid crystal layer 13 is received in the display substrate 11, the opposite substrate 12, and the plastic frame 14.
  • the plastic frame 14 is correspondingly located in the peripheral region 102 of the display device 100.
  • the display substrate 11 may be one of a thin film transistor array substrate and a color filter substrate, and the opposite substrate 12 is the other of the thin film transistor array substrate and the color filter substrate.
  • the display substrate 11 includes a base substrate 111, a color filter layer 112, a common electrode 113, an alignment film 114, and a flat layer 115.
  • the color filter layer 112, the common electrode 113, and the The alignment film 114 and the flat layer 115 are disposed on the base substrate 111.
  • the flat layer 115 covers the color filter layer 112 and is located between the color filter layer 112 and the common electrode 113.
  • the alignment film 114 is located on a side of the common electrode 113 away from the color filter layer 112.
  • the display substrate 11 is a color filter substrate, and the opposite substrate 12 is a thin film transistor array substrate.
  • the present invention is not limited thereto, and in other embodiments,
  • the display substrate 11 is a thin film transistor array substrate, and the opposite substrate 12 is a color filter substrate, and is not limited thereto.
  • the common electrode 113 is located on the display substrate 11, that is, on the color filter substrate.
  • the present invention is not limited thereto. In other embodiments, the common electrode 113 may also be used. It is located on the opposite substrate 12, that is, on the thin film transistor array substrate, and is not limited thereto.
  • the color filter layer 112 includes a plurality of color filter units 1121 and a plurality of white filter units 1122.
  • the color filter units 1121 are spaced apart from the white filter units 1122 and arranged in a matrix, adjacent to each other. A blank area is disposed between the two color filter units 1121 to form the white filter unit 1122.
  • the color filter unit 1121 includes a red filter unit 1121a, a green filter unit 1121b, and a blue filter unit 1121c, the red filter unit 1121a, the green filter unit 1121b, and the blue filter unit.
  • the color filter unit 1121 is formed by sequentially arranging 1121c.
  • the display substrate 11 further includes a black matrix 116.
  • the color filter unit 1121 and the white filter unit 1122 are disposed on the side of the color filter layer 112 adjacent to the substrate 111.
  • the black matrix 116, the red filter unit 1121a and the green filter unit 1121b, and the black filter unit 1121b and the blue filter unit 1121c are also disposed with the black matrix 116. .
  • the black matrix 116 is located on the display substrate as an example.
  • the present invention is not limited thereto.
  • the black matrix may be located on the opposite substrate or the black matrix. It is located on the opposite substrate together with the color filter layer composed of the filter unit, and is not limited thereto.
  • FIG. 3 is a partial plan view of the display substrate shown in FIG. 2.
  • the color filter layer 112 further includes a pad upper layer 1123, the pad layer 1123 is located in a blank area forming the white filter unit 1122, and the pad upper layer 1123 is in the
  • the orthographic projection on the base substrate 111 is located within the orthographic projection of the white filter unit 1122 on the base substrate and is smaller than the orthographic projection of the white filter unit 1122 on the base substrate 111.
  • the step difference of the flat layer 115 caused by the flat layer 115 when covering the color filter layer 112 can be reduced, and
  • the white filter unit 1122 is divided into several small regions, and the aperture ratio of the white filter unit 1122 can be reduced while ensuring the light transmittance of the white filter unit 1122 without additional
  • the control of the control circuit can keep the brightness of the white filter unit 1122 and the color filter unit 1121 consistent, thereby avoiding the problem that the display device 100 displays uneven brightness when displayed.
  • the pad upper layer 1123 includes a light shielding layer 1123a and a support layer 1123b.
  • the light shielding layer 1123a is laminated with the support layer 1123b, and the light shielding layer 1123a is located between the support layer 1123b and the substrate substrate 111.
  • the light shielding layer 1123a and the black matrix 116 are located in the same layer, the light shielding layer 1123a and the black matrix 116 may be formed in the same process, and the light shielding layer 1123a and the black layer
  • the material of the matrix 116 is the same
  • the support layer 1123b is located in the same layer as the color filter unit 1121
  • the support layer 1123b and the color filter unit 1121 may be formed in the same process
  • the support layer 1123b The material of the color filter unit 1121 is the same.
  • the support layer 1123b may be made in the same process as any one of the red filter unit 1121a, the green filter unit 1121b, or the blue filter unit 1121c, and use the same Material.
  • the height of the upper surface of the pad upper layer 1123 is the same as the height of the upper surface of the color filter unit 1121, but is not limited thereto. In other embodiments, the upper surface of the pad upper layer 1123 is The height may also be slightly higher than the height of the upper surface of the color filter unit 1121.
  • the pad upper layer 1123 has a strip shape, and the pad high layer 1123 extends in the same direction as the white filter unit 1122.
  • the pad layer 1123 is located in the white filter unit 1122.
  • the intermediate portion may coincide with the axis of symmetry of the white filter unit 1122 to divide the white filter unit 1122 into two portions of equal area.
  • the present invention is not limited thereto.
  • the extending direction of the upper layer of the pad may be the same as the width direction of the white filter unit or the diagonal direction of the white filter unit.
  • the extending direction of the pad upper layer 1123 is the same as the longitudinal direction of the white filter unit 1122.
  • the present invention is not limited thereto.
  • the height direction of the pad can also be the same as the width direction of the white filter unit.
  • the height of the pad is described as an example. However, the height of the pad is not limited thereto.
  • the upper layer of the pad may also be a cross or other shape as shown in FIG. 5, as shown in the figure. As shown in Fig. 5, the upper layer of the pad has a cross shape and is located at the position of the symmetry axis of the white filter unit, dividing the white filter unit into four portions of equal area.
  • 5 is a partial plan view of a display substrate in another embodiment of the present disclosure.
  • FIG. 6 is a partial cross-sectional view of the display substrate according to still another embodiment of the present disclosure. As shown in FIG. 6, the embodiment shown in FIG. 6 is different from the embodiment shown in FIG. 2 in that the upper surface of the pad layer 2123 and the black matrix 216, that is, the side away from the substrate substrate, and the color filter layer.
  • the color filter unit 2121 composed of the red filter unit 2121a, the green filter unit 2121b, and the blue filter unit 2121c is flush with a side of the substrate, and the black matrix 216 and the color filter unit are 2121 is located in the same layer, the pad high layer 2123 is also in the same layer as the black matrix 216, and the pad upper layer 2123 can be formed in the same process as the black matrix 216, the pad upper layer 2123 and the black matrix 216 The materials are the same.
  • FIG. 7 is a partial cross-sectional view of the display substrate in still another embodiment of the present disclosure.
  • the embodiment shown in FIG. 7 is different from the embodiment shown in FIG. 2 in that the pad layer 3123 and the color filter layer are composed of a red filter unit 3121a, a green filter unit 3121b, and a blue color.
  • the color filter unit 3121 composed of the filter unit 3121c is located in the same layer, and the pad layer 3123 can be formed in the same process as the black matrix 316.
  • the pad layer 3123 is made of the same material as the black matrix 316.
  • the display substrate, the display panel and the display device provided by the embodiments of the present disclosure are provided with a high-rise layer in a blank area of the white filter unit, such that the orthographic projection of the upper layer of the pad on the substrate is located on the substrate in the blank area. And less than the orthographic projection of the blank area on the substrate. In this way, dividing the blank area into several small areas through the upper layer of the pad can not only improve the flatness of the flat layer after coating, but also reduce the light transmittance of the white filter unit while reducing the white filter unit.
  • the aperture ratio is such that the white filter unit is consistent with the brightness of the color filter unit.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Optical Filters (AREA)

Abstract

一种显示基板（11），包括衬底基板（111）、位于衬底基板（111）上的彩色滤光层（112）、黑矩阵（116）以及平坦层（115），其中，彩色滤光层（112）包括：多个彩色滤光单元（1121）；多个白色滤光单元（1122），白色滤光单元（1122）由空白区域形成；黑矩阵（116），位于彩色滤光单元（1121）与白色滤光单元（1122）之间；和垫高层（1123），垫高层（1123）位于空白区域之中，垫高层（1123）在衬底基板（111）上的正投影位于白色滤光单元（1122）在衬底基板（111）上的正投影内，且小于白色滤光单元（1122）在衬底基板（111）上的正投影。

Description

显示基板、显示面板及显示装置
相关申请的交叉引用
本申请主张在2017年7月20日在中国提交的中国专利申请号No.201710595219.4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，特别是涉及一种显示基板、显示面板及显示装置。
背景技术
随着全球信息社会的兴起增加了对各种显示装置的需求。因此，对各种平面显示装置的研究和开发投入了很大的努力，如液晶显示装置(LCD)、等离子显示装置(PDP)、场致发光显示装置(ELD)以及真空荧光显示装置(VFD)。
液晶显示装置因其功耗小、成本低、无辐射和易操作等特点，已广泛应用于各个领域，如家庭、公共场所、办公场所及个人电子相关产品等。液晶显示装置也已经从最初的黑白显示装置发展到如今的彩色显示装置，其中最主要的是因为彩色滤光片的加入，而彩色滤光片也从开始的RGB形式发展到RGBW形式。对于RGBW形式的彩色滤光片，一般的做法是在两个由RGB组成的彩色滤光单元之间铺设透明光阻形成白色滤光单元，但由于这种方式成本较高，所以现在一般是直接在两个彩色滤光单元之间形成空白区域以形成白色滤光单元。
但是，直接在两个彩色滤光单元之间形成空白区域以形成白色滤光单元的方式，由于空白区域的存在，导致空白区域的光线透过率高于彩色滤光单元的区域，容易造成显示装置显示的时候亮度不均匀，而且在彩色滤光片上形成平坦层的时候，由于空白区域的存在导致段差较大，平坦层易发生断裂。
发明内容
鉴于此，有必要提供一种显示基板、显示面板及显示装置。
为了达到上述目的，本公开实施例提供一种显示基板，所述显示基板包括衬底基板、位于所述衬底基板上的彩色滤光层和黑矩阵，以及平坦层，所述彩色滤光层包括多个彩色滤光单元和多个白色滤光单元，所述白色滤光单元由空白区域形成，所述黑矩阵位于所述彩色滤光单元与所述白色滤光单元之间，所述彩色滤光层还包括垫高层，所述垫高层位于所述空白区域之中，所述垫高层在所述衬底基板上的正投影位于所述空白区域在所述衬底基板上的正投影内，且小于所述空白区域在所述衬底基板上的正投影。
可选地，所述垫高层的上表面的高度与所述彩色滤光单元的上表面的高度相同。
可选地，所述垫高层呈条形，并将所述白色滤光单元分割成面积相等的两部分。
可选地，其中，所述垫高层呈十字形，将所述白色滤光单元分割成面积相等的四部分。
可选地，所述垫高层与所述黑矩阵材质相同，所述垫高层远离所述衬底基板的一面，与所述彩色滤光单元远离所述衬底基板的一面相齐平。
可选地，所述垫高层远离衬底基板的一面和黑矩阵远离衬底基板的一面均与彩色滤光层中彩色滤光单元远离衬底基板的一面相齐平。
可选地，所述垫高层包括遮光层及支撑层，所述遮光层与所述支撑层层叠设置，且所述遮光层位于所述支撑层与所述衬底基板之间。
可选地，所述遮光层与所述黑矩阵位于同一层，且材质相同。
可选地，所述支撑层与所述彩色滤光单元位于同一层，且材质相同。
可选地，显示基板还包括公共电极和配向膜，所述平坦层在于所述彩色滤光层与所述公共电极之间，所述配向膜位于所述公共电极远离所述彩色滤光层的一侧。
可选地，所述彩色滤光单元与所述白色滤光单元间隔设置，并呈矩阵排列，相邻的两个彩色滤光单元之间设置有空白区域，以形成所述白色滤光单元，所述彩色滤光单元包括红色滤光单元、绿色滤光单元及蓝色滤光单元，所述红色滤光单元、所述绿色滤光单元及所述蓝色滤光单元依次排列形成所述彩色滤光单元。
可选地，在所述彩色滤光层靠近所述衬底基板的一侧，所述彩色滤光单元与所述白色滤光单元之间设置有所述黑矩阵，所述红色滤光单元与所述绿色滤光单元之间，以及所述绿色滤光单元与所述蓝色滤光单元之间也设置有所述黑矩阵。
本公开还提供一种显示面板，所述显示面板置包括上述显示基板、对向基板、液晶层及胶框，其中所述显示基板与所述对向基板相对设置，所述液晶层及所述胶框夹于所述显示基板与所述对向基板之间，所述液晶层收容于所述显示基板、所述对向基板及所述胶框围成的腔体内。
本公开还提供一种显示装置，所述显示装置包括上述显示面板及背光模组，其中所述显示面板及所述背光模组层叠设置，共同组成所述显示装置的显示模组，所述显示装置包括一显示区及围绕所述显示区的周边区，所述显示区用于实现所述显示装置的显示输出功能，所述周边区用于布置走线，所述胶框对应位于所述显示装置的周边区中。
本公开实施例提供的显示基板、显示面板及显示装置，在白色滤光单元的空白区域中设置垫高层，使得垫高层在衬底基板上的正投影位于空白区域在衬底基板上的正投影内，且小于空白区域在衬底基板上的正投影。这样，通过垫高层将空白区域分割成几个小的区域，不仅可以提高涂布后平坦层的平坦性，而且可以在保证白色滤光单元的光线透过率的同时，降低白色滤光单元的开口率，使得白色滤光单元与彩色滤光单元的亮度保持一致。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本公开一实施例提供的一种显示装置的立体图；
图2为图1中II-II处所示的显示面板的部分剖面图；
图3为图2中所示的显示基板的部分平面图；
图4为本公开另一实施方式中显示基板的部分平面图；
图5为本公开又一实施方式中显示基板的部分平面图；
图6为本公开再一实施方式中显示基板的部分剖面图；
图7为本公开再一实施方式中显示基板的部分剖面图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
请参阅图1，图1为本公开一实施例提供的一种显示装置的立体图。如图1所示，所述显示装置100包括显示面板10及背光模组20，所述显示面板10及所述背光模组20层叠设置，共同组成所述显示装置100的显示模组，以实现所述显示装置100的显示功能。所述显示装置100包括一显示区101及围绕所述显示区101的周边区102，所述显示区101主要用于实现所述显示装置100的显示输出功能，所述周边区102主要用于布置走线等。
请同时参阅图2，图2为图1中II-II处所示的显示面板的部分剖面图。如图2所示，所述显示面板10还包括显示基板11、对向基板12、液晶层13及胶框14，所述显示基板11与所述对向基板12相对设置，所述液晶层13及所述胶框14夹于所述显示基板11与所述对向基板12之间，所述液晶层13收容于所述显示基板11、所述对向基板12及所述胶框14围成的腔体内，所述胶框14对应位于所述显示装置100的周边区102中。其中，所述显示基板11可以为薄膜晶体管阵列基板及彩膜基板中的一者，所述对向基板12为薄膜晶体管阵列基板及彩膜基板中的另一者。
本公开实施例中，所述显示基板11包括衬底基板111、彩色滤光层112、公共电极113、配向膜114及平坦层115，所述彩色滤光层112、所述公共电极113、所述配向膜114及所述平坦层115设置于所述衬底基板111上，所述平坦层115覆盖所述彩色滤光层112并位于所述彩色滤光层112与所述公共电极113之间，所述配向膜114位于所述公共电极113远离所述彩色滤光层112的一侧。
本实施方式中，是以所述显示基板11为彩膜基板，所述对向基板12为薄膜晶体管阵列基板为例进行说明的，但并不局限于此，在其他实施方式中，还可以是所述显示基板11为薄膜晶体管阵列基板，所述对向基板12为彩膜基板，并不以此为限。
本实施方式，是以所述公共电极113位于所述显示基板11，即位于彩膜基板上为例进行说明的，但并不局限于此，在其他实施方式中，所述公共电极113还可以是位于所述对向基板12，即位于薄膜晶体管阵列基板上，并不以此为限。
所述彩色滤光层112包括多个彩色滤光单元1121及多个白色滤光单元1122，所述彩色滤光单元1121与所述白色滤光单元1122间隔设置，并呈矩阵排列，相邻的两个彩色滤光单元1121之间设置有空白区域，以形成所述白色滤光单元1122。所述彩色滤光单元1121包括红色滤光单元1121a、绿色滤光单元1121b及蓝色滤光单元1121c，所述红色滤光单元1121a、所述绿色滤光单元1121b及所述蓝色滤光单元1121c依次排列形成所述彩色滤光单元1121。
所述显示基板11还包括黑矩阵116，在所述彩色滤光层112靠近所述衬底基板111的一侧，所述彩色滤光单元1121与所述白色滤光单元1122之间设置有所述黑矩阵116，所述红色滤光单元1121a与所述绿色滤光单元1121b之间，以及所述绿色滤光单元1121b与所述蓝色滤光单元1121c之间也设置有所述黑矩阵116。
本实施方式中，是以所述黑矩阵116位于所述显示基板上为例进行说明的，但并不局限于此，在其他方式中，黑矩阵还可以是位于对向基板上，或者黑矩阵与滤光单元组成的彩色滤光层一同位于对向基板上，并不以此为限。
请同时参阅图3，图3为图2中所示的显示基板的部分平面图。如图2及图3所示，所述彩色滤光层112还包括垫高层1123，所述垫高层1123位于形成所述白色滤光单元1122的空白区域中，并且所述垫高层1123在所述衬底基板111上的正投影位于所述白色滤光单元1122在所述衬底基板上的正投影内，且小于所述白色滤光单元1122在所述衬底基板111上的正投影。
这样，通过在所述白色滤光单元1122中设置所述垫高层1123，可以减小 所述平坦层115在覆盖所述彩色滤光层112时造成的所述平坦层115的段差，并且可以将所述白色滤光单元1122分割成几个小的区域，可以在保证所述白色滤光单元1122的光线透过率的同时，来降低所述白色滤光单元1122的开口率，无需通过额外的控制电路的调控，就可以使得所述白色滤光单元1122与所述彩色滤光单元1121的亮度保持一致，避免所述显示装置100在显示时显示亮度不均的问题。
所述垫高层1123包括遮光层1123a及支撑层1123b，所述遮光层1123a与所述支撑层1123b层叠设置，并且所述遮光层1123a位于所述支撑层1123b与所述衬底基板111之间。
本实施方式中，所述遮光层1123a与所述黑矩阵116位于同一层，所述遮光层1123a与所述黑矩阵116可以是在同一工序中制成，并且所述遮光层1123a与所述黑矩阵116的材质相同，所述支撑层1123b与所述彩色滤光单元1121位于同一层，所述支撑层1123b与所述彩色滤光单元1121可是在同一工序中制成，并且所述支撑层1123b与所述彩色滤光单元1121的材质相同。
具体的，所述支撑层1123b可以是与所述红色滤光单元1121a、所述绿色滤光单元1121b或者所述蓝色滤光单元1121c中的任何一者在同一工序中制成，并且使用相同的材质。
优选的，所述垫高层1123的上表面的高度与所述彩色滤光单元1121的上表面的高度相同，但并不局限于此，在其他实施方式中，所述垫高层1123的上表面的高度也可以略高于所述彩色滤光单元1121的上表面的高度。
本实施方式中，所述垫高层1123呈条形，并且所述垫高层1123的延伸方向与所述白色滤光单元1122的长度方向相同，所述垫高层1123位于所述白色滤光单元1122的中间部位，并可以与所述白色滤光单元1122的对称轴重合，从而将所述白色滤光单元1122分割成面积相等的两部分。但并不局限于此，在其他实施方式中，所述垫高层的延伸方向还可以与所述白色滤光单元的宽度方向或者与所述白色滤光单元的对角线方向等相同。
本实施方式中，是以所述垫高层1123的延伸方向与所述白色滤光单元1122的长度方向相同为例进行说明，但并不局限于此，在其他实施方式中，如图4所示，垫高层的延伸方向还可以是与白色滤光单元的宽度方向相同。
本实施方式中，是以垫高层是条状为例进行说明，但并不局限于此，在其他实施方式中，垫高层还可以是如图5中所示的十字形或者其他形状，如图5中所示，垫高层为十字形，并且位于白色滤光单元的对称轴的位置，将白色滤光单元分割成面积相等的四个部分。其中，图5为本公开另一实施方式中显示基板的部分平面图。
请同时参阅图6，图6为本公开又一实施方式中显示基板的部分剖面图。如图6所示，图6所示的实施方式与图2所示实施方式的不同之处在于，垫高层2123和黑矩阵216的上表面，即远离衬底基板的一面，与彩色滤光层中由红色滤光单元2121a、绿色滤光单元2121b及蓝色滤光单元2121c组成的彩色滤光单元2121远离衬底基板的一面相齐平，并且所述黑矩阵216与所述彩色滤光单元2121位于同一层，垫高层2123也与所述黑矩阵216位于同一层，并且所述垫高层2123可以与所述黑矩阵216在同一工序中制成，所述垫高层2123与所述黑矩阵216的材质相同。
请同时参阅图7，图7为本公开再一实施方式中显示基板的部分剖面图。如图7所示，图7所示的实施方式与图2所示实施方式的不同之处在于，垫高层3123与彩色滤光层中由红色滤光单元3121a、绿色滤光单元3121b及蓝色滤光单元3121c组成的彩色滤光单元3121位于同一层，所述垫高层3123可以与黑矩阵316在同一工序中制成，所述垫高层3123与所述黑矩阵316的材质相同。
本公开实施例提供的显示基板、显示面板及显示装置，在白色滤光单元的空白区域中设置垫高层，使得垫高层在衬底基板上的正投影位于空白区域在衬底基板上的正投影内，且小于空白区域在衬底基板上的正投影。这样，通过垫高层将空白区域分割成几个小的区域，不仅可以提高涂布后平坦层的平坦性，而且可以在保证白色滤光单元的光线透过率的同时，降低白色滤光单元的开口率，使得白色滤光单元与彩色滤光单元的亮度保持一致。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以权利要求的保护范围为准。

Claims (15)

  1. 一种显示基板，包括衬底基板、位于所述衬底基板上的彩色滤光层、黑矩阵以及平坦层，其中，所述彩色滤光层包括：
    多个彩色滤光单元；
    多个白色滤光单元，所述白色滤光单元由空白区域形成；
    黑矩阵，位于所述彩色滤光单元与所述白色滤光单元之间；和
    垫高层，所述垫高层位于所述空白区域之中，所述垫高层在所述衬底基板上的正投影位于所述白色滤光单元在所述衬底基板上的正投影内，且小于所述白色滤光单元在所述衬底基板上的正投影。
  2. 如权利要求1所述的显示基板，其中，所述垫高层的上表面的高度与所述彩色滤光单元的上表面的高度相同。
  3. 如权利要求1所述的显示基板，其中，所述垫高层呈条形，并将所述白色滤光单元分割成面积相等的两部分。
  4. 如权利要求1所述的显示基板，其中，所述垫高层呈十字形，将所述白色滤光单元分割成面积相等的四部分。
  5. 如权利要求1所述的显示基板，其中，所述垫高层与所述黑矩阵材质相同，所述垫高层远离所述衬底基板的一面，与所述彩色滤光单元远离所述衬底基板的一面相齐平。
  6. 根据权利要求5所述的显示基板，其中，所述垫高层远离衬底基板的一面和黑矩阵远离衬底基板的一面均与彩色滤光层中的彩色滤光单元远离衬底基板的一面相齐平。
  7. 如权利要求1所述的显示基板，其中，所述垫高层包括遮光层及支撑层，所述遮光层与所述支撑层层叠设置，且所述遮光层位于所述支撑层与所述衬底基板之间。
  8. 如权利要求7所述的显示基板，其中，所述遮光层与所述黑矩阵位于同一层，且材质相同。
  9. 如权利要求7所述的显示基板，其中，所述支撑层与所述彩色滤光单元位于同一层，且材质相同。
  10. 根据权利要求1所述的显示基板，还包括公共电极和配向膜，所述平坦层覆盖所述彩色滤光层，并且位于彩色滤光层与所述公共电极之间，所述配向膜位于所述公共电极远离所述彩色滤光层的一侧。
  11. 根据权利要求1所述的显示基板，其中，所述彩色滤光单元与所述白色滤光单元间隔设置，并呈矩阵排列，相邻的两个彩色滤光单元之间设置有空白区域，以形成所述白色滤光单元，所述彩色滤光单元包括红色滤光单元、绿色滤光单元及蓝色滤光单元，所述红色滤光单元、所述绿色滤光单元及所述蓝色滤光单元依次排列形成所述彩色滤光单元。
  12. 根据权利要求11所述的显示基板，其中，在所述彩色滤光层靠近所述衬底基板的一侧，所述彩色滤光单元与所述白色滤光单元之间设置有所述黑矩阵，所述红色滤光单元与所述绿色滤光单元之间，以及所述绿色滤光单元与所述蓝色滤光单元之间也设置有所述黑矩阵。
  13. 一种显示面板，包括如权利要求1至12中任一项所述的显示基板、对向基板、液晶层及胶框，其中所述显示基板与所述对向基板相对设置，所述液晶层及所述胶框夹于所述显示基板与所述对向基板之间，所述液晶层收容于所述显示基板、所述对向基板及所述胶框围成的腔体内。
  14. 根据权利要求13所述的显示面板，其中，所述显示基板是薄膜晶体管阵列基板及彩膜基板中的一个，所述对向基板为薄膜晶体管阵列基板及彩膜基板中的另一个。
  15. 一种显示装置，包括如权利要求13或14所述的显示面板及背光模组，其中所述显示面板及所述背光模组层叠设置，共同组成所述显示装置的显示模组，所述显示装置包括一显示区及围绕所述显示区的周边区，所述显示区用于实现所述显示装置的显示输出功能，所述周边区用于布置走线，所述胶框对应位于所述显示装置的周边区中。
PCT/CN2018/075729 2017-07-20 2018-02-08 显示基板、显示面板及显示装置 WO2019015307A1 (zh)

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