WO2014153891A1 - 液晶显示面板及其制造方法 - Google Patents

液晶显示面板及其制造方法 Download PDF

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Publication number
WO2014153891A1
WO2014153891A1 PCT/CN2013/078630 CN2013078630W WO2014153891A1 WO 2014153891 A1 WO2014153891 A1 WO 2014153891A1 CN 2013078630 W CN2013078630 W CN 2013078630W WO 2014153891 A1 WO2014153891 A1 WO 2014153891A1
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liquid crystal
polarizer
substrate
color filter
crystal display
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English (en)
French (fr)
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金起满
柳在健
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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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
    • G02F1/133528—Polarisers
    • 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
    • G02F1/133528—Polarisers
    • G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136222—Colour filters incorporated in the active matrix substrate

Definitions

  • Liquid crystal display panel and method of manufacturing the same
  • Embodiments of the present invention relate to a liquid crystal display panel and a method of fabricating the same. Background technique
  • TFT-LCD Thin Film Transistor-Liquid Crystal Display
  • the conventional TFT-LCD structure has a liquid crystal layer disposed between two substrates, and a thin film transistor is prepared on one of the substrates for driving the rotation of the liquid crystal to control the display of each pixel; and CF (Color Filter) is prepared on the other substrate.
  • Light film used to form the color of each pixel.
  • the TFT-LCD structure of the COA (Color Filter on Array) structure is to prepare the TFT array and the CF on the same substrate. This technology has a tube process, reduces cost, and improves transmittance. Etc.
  • Embodiments of the present invention provide a liquid crystal display panel and a method of fabricating the same, which can solve the problem of local light leakage in a normally black state of a liquid crystal display device of the prior art COA structure.
  • An embodiment of the present invention provides a liquid crystal display panel, including: a first substrate and a second substrate disposed opposite to each other; a liquid crystal layer disposed between the first substrate and the second substrate; a plurality of switching units on a light emitting side of the substrate; a color filter disposed between the first substrate and the liquid crystal layer; a first polarizer disposed on a light incident side of the first substrate; a second polarizer between the color filter and the liquid crystal layer, wherein a polarization axis of the second polarizer The polarization axes of the first polarizers are parallel.
  • the liquid crystal display panel further includes: a third polarizer disposed on a light exiting side of the second substrate, wherein a polarization axis of the third polarizer is perpendicular to a polarization axis of the first polarizer .
  • the liquid crystal display panel further includes: a black matrix, wherein the black matrix and the color filter are disposed in the same layer, corresponding to the switching unit, and form a plurality of open regions.
  • the color filter comprises a color photoresist layer, and the color photoresist layer is disposed in the plurality of open regions.
  • the liquid crystal display panel further includes: a protective film disposed between the liquid crystal layer and the second polarizer.
  • the switching unit is a thin film transistor.
  • Embodiments of the present invention provide a method of fabricating a liquid crystal display panel, including: opposing a first substrate and a second substrate; forming a liquid crystal layer between the first substrate and the second substrate; Forming a plurality of switching units on the light emitting side; forming a color filter between the first substrate and the liquid crystal layer; forming a first polarizer on the light incident side of the first substrate; and the color filter and the color filter A second polarizer is formed between the liquid crystal layers, wherein a polarization axis of the second polarizer is parallel to a polarization axis of the first polarizer.
  • the method for manufacturing a liquid crystal display panel according to the embodiment of the present invention further comprising: forming a third polarizer on the light exiting side of the second substrate, wherein a polarization axis of the third polarizer and the first The polarization axis of the polarizer is vertical.
  • the manufacturing method of the liquid crystal display panel further includes: forming a black matrix above the switch unit, the black matrix corresponding to the switch unit, and forming a plurality of open regions between the black matrix Forming a color photoresist layer of the color filter in the plurality of open regions.
  • the forming the second polarizer comprises: coating an isotropic liquid crystal on the color filter and drying to form the second polarizer, or adding a liquid crystal to which a reactive group is added After being coated on the color filter and dried, photocuring and heat curing are performed to form the second polarizer.
  • the method of manufacturing a liquid crystal display panel further includes: forming a protective film between the liquid crystal layer and the second polarizer.
  • FIG. 2 is a cross-sectional view of a liquid crystal display panel according to an embodiment of the present invention.
  • 3 is a simulation curve of light leakage amount of a conventional liquid crystal display panel
  • FIG. 4 is a graph showing a simulation of light leakage amount of a liquid crystal display panel according to an embodiment of the present invention. detailed description
  • the embodiment of the invention provides a liquid crystal display panel, comprising: a first substrate and a second substrate disposed opposite to each other; a liquid crystal layer disposed between the first substrate and the second substrate; a plurality of switching units on the inner side of the substrate, that is, on the light exiting side; a color filter disposed between the first substrate and the liquid crystal layer; disposed outside the first substrate, that is, on the light incident side a first polarizer; a second polarizer disposed between the color filter and the liquid crystal layer, wherein a polarization axis of the second polarizer is parallel to a polarization axis of the first polarizer.
  • an embodiment of the present invention provides a liquid crystal display panel 1 including: a first substrate 11 and a second substrate 18 disposed opposite to each other, wherein the first substrate 11 and the second substrate 18 are transparent substrates. It may be a glass substrate, a quartz substrate or a transparent resin substrate, but is not limited to the above;
  • a liquid crystal layer 17 disposed between the first substrate 11 and the second substrate 18; a plurality of switching units 12 disposed on the inner side of the first substrate 11, that is, the light-emitting side, wherein the switching unit 12 may be a thin film transistor, and a pixel electrode 13 is further disposed in an intermediate portion formed by the switching unit 12, and is electrically connected to the switching unit 12 sexual connection
  • the first polarizer 10 is disposed outside the first substrate 11, that is, on the light incident side, so that the light incident on the liquid crystal display panel has a polarization direction;
  • a second polarizer 15 disposed between the color filter 14 and the liquid crystal layer 17, wherein the polarization axis of the second polarizer 15 is parallel to the polarization axis of the first polarizer 10 so as to pass through the second polarizer 15
  • the light rays have the same polarization direction as the light transmitted through the first polarizer 10, so that the light caused by the scattering after passing through the color filter can be corrected, and only the polarization direction and the light of the second polarizer 15 can pass.
  • a third polarizer 19 perpendicular to the polarization axis of the first polarizer 10 is disposed outside the second substrate 18, that is, on the light exit side.
  • a black matrix 20 is disposed on the same layer of the color filter 14, and the black matrix 20 corresponds to the switch unit 12 and forms a plurality of open areas.
  • the color filter 14 includes a color photoresist layer, and the colored light The resist layer is disposed in the plurality of opening regions.
  • the black matrix may be separately disposed instead of being disposed in the same layer as the color filter 14, and only the switching unit 12 needs to be implemented between the switching unit 12 and the liquid crystal layer 17. The occlusion is sufficient, but the color filter 14 and the black matrix 20 are disposed in the same layer, which can reduce the thickness and the cylinder production of the liquid crystal display panel.
  • a protective film 16 is further disposed between the second polarizer 15 and the liquid crystal layer 17, wherein the protective film 16 may be stable in water (not reacting with water), transparent, and thermally stable.
  • the protective film 16 can prevent the second polarizer 15 from directly contacting the liquid crystal layer 17, and improve the moisture resistance and chemical resistance of the second polarizer 15.
  • the second polarizer 15 parallel to the polarization axis of the first polarizer 10 is added between the color filter 14 and the liquid crystal layer 17, the second polarizer 15 is The light of the polarizer 15 has the same polarization direction as the light transmitted through the first polarizer 10, and the delayed light is filtered again, thereby solving the local light leakage of the conventional liquid crystal display device in the normally black state.
  • the problem is to improve the user experience.
  • FIG. 3 is a graph showing a simulation curve of light leakage caused by light delay in a liquid crystal display panel of an existing ADS (Advanced Super Dimension Switch) mode. As shown in FIG. 3, as the amount of delay increases, the amount of light leakage of the liquid crystal display panel also increases, and in general, the amount of light leakage that the eye can perceive is 0.4 nit, that is, the retardation value of the liquid crystal display panel is 3 When the nanometer is above, a spot is generated.
  • ADS Advanced Super Dimension Switch
  • FIG. 4 is a schematic diagram showing a light leakage amount caused by a light delay of a liquid crystal display panel having a COA structure according to an embodiment of the present invention.
  • the retardation amount of the liquid crystal display panel is in a range of 0 nm to 5 nm.
  • the light leakage amount of the liquid crystal display panel is less than 0.4 nit, which reduces the light leakage amount by about 50% compared with the prior art, and solves the problem of light leakage.
  • the above-mentioned light leakage amount simulation is exemplified by an ADS mode liquid crystal display panel, but the embodiment of the present invention is also applicable to TN (Twisted Nematic), IPS (In-Plane Switching), plane conversion. Technology) and other modes of liquid crystal display panels.
  • TN Transmission Nematic
  • IPS In-Plane Switching
  • Technology plane conversion. Technology
  • the liquid crystal display panel provided by the embodiment of the present invention includes: a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer disposed between the first substrate and the second substrate, disposed on the inner side of the first substrate a plurality of switching units, a color filter disposed between the first substrate and the liquid crystal layer, and a first polarizer disposed outside the first substrate, disposed on the color filter and the a second polarizer between the liquid crystal layers, wherein a polarization axis of the second polarizer is parallel to a polarization axis of the first polarizer.
  • the light transmitted through the second polarizer and the light transmitted through the first polarizer are transmitted.
  • the light has the same polarization direction, and the delayed light is again filtered again, thereby solving the problem that the liquid crystal display device of the existing COA structure has local light leakage in the normally black state, and improves the user experience.
  • the embodiment of the invention further provides a method for manufacturing a liquid crystal display panel, comprising:
  • a plurality of switching units 12 are formed on the inner side of the first substrate 11, that is, on the light exiting side;
  • a second polarizer 15 is formed between the color filter and the liquid crystal layer, wherein a polarization axis of the second polarizer 15 is parallel to a polarization axis of the first polarizer 10.
  • a third polarizer 19 having a polarization axis direction perpendicular to the first polarizer 10 is formed outside the second substrate 18, that is, on the light exit side.
  • the pixel electrode 13 is further formed in the intermediate portion formed by the switch unit 12, and is electrically connected to the switch unit 12.
  • the black matrix 20 is formed in the same layer of the color filter 14, the black matrix 20 is in one-to-one correspondence with the switching unit 12 and forms a plurality of opening regions, and the color filter 14 includes a color photoresist layer, and the color photoresist layer is formed.
  • the black matrix may be separately formed on another layer, and only the shielding of the switching unit 12 between the switching unit 12 and the liquid crystal layer 17 may be implemented, but in the color filter 14 Forming the black matrix 20 in the same layer can reduce the thickness and the cylinder production of the liquid crystal display panel.
  • a protective film 16 is formed between the second polarizer 15 and the liquid crystal layer 17, wherein the protective film 16 may be any substance that is stable in water (not reacting with water), transparent, and has good thermal stability.
  • the protective film 16 can prevent the second polarizer 15 from directly contacting the liquid crystal layer 17, and improve the moisture resistance and chemical resistance of the second polarizer 15.
  • the method for manufacturing the liquid crystal display panel described in detail in FIG. 2 is as follows:
  • the first polarizer is formed on the light incident side of the first substrate.
  • the first polarizer 10 is attached to the light incident side of the first substrate 11.
  • a plurality of switching units and a pixel electrode connected to the switching unit are formed on the light emitting side of the first substrate.
  • each layer of the member for forming the switching unit is sequentially formed on the first substrate obtained after the step S101, and the respective components of the switching unit are formed by a patterning process to form a pixel electrode, and the pixel electrode and the switching unit are electrically connected.
  • a plurality of black matrices are formed on the first substrate obtained after the step S102, the black matrix is corresponding to the switch unit, and a plurality of open regions are formed between the black matrices, and the color filter includes color.
  • a photoresist layer wherein the color photoresist layer is formed in the plurality of opening regions.
  • a second polarizer is formed on the first substrate 11 obtained after the step S103, and a polarization axis of the second polarizer is parallel to a polarization axis of the first polarizer, so that the light transmitted through the second polarizer is Light rays transmitted through the first polarizer have the same polarization direction.
  • forming the second polarizer includes: Coating an isotropic liquid crystal on the color filter and drying to form the second polarizer, or coating a liquid crystal to which a reactive group is added on the color filter and After drying, photocuring and heat curing are carried out to form the second polarizer.
  • the coating method may be PECVD (Plasma Enhanced Chemical Vapor Deposition), LPCVD (Low Pressure Chemical Vapor Deposition), APCVD (Atmospheric Pressure Chemical Vapor Deposition, atmospheric pressure) Chemical vapor deposition), ECR-CVD (Electro-Cyclotron Resonance - Chemical Vapor Deposition) or sputtering.
  • PECVD Plasma Enhanced Chemical Vapor Deposition
  • LPCVD Low Pressure Chemical Vapor Deposition
  • APCVD Admospheric Pressure Chemical Vapor Deposition, atmospheric pressure
  • ECR-CVD Electro-Cyclotron Resonance - Chemical Vapor Deposition
  • sputtering sputtering.
  • a protective film may be formed on the second polarizer, so the protective film should be stable in water (not reacting with water) ) Any material that is transparent and has good thermal stability.
  • the second substrate is aligned with the first substrate, and then liquid crystal is injected between the first substrate and the second substrate to form a liquid crystal layer.
  • a spacer may be disposed between the protective film and the second substrate to maintain the gap, and the liquid crystal is disposed in the gap.
  • the spacer may be a spherical spacer of a glass fiber material or a rod-shaped spacer of a resin material, which is not limited by the embodiment of the present invention.
  • a method for manufacturing a liquid crystal display panel includes: providing a first substrate and a second substrate oppositely, and forming a liquid crystal layer between the first substrate and the second substrate, ie, inside the first substrate, that is, Forming a plurality of switching units on the light emitting side, forming a color filter between the first substrate and the liquid crystal layer, and forming a first polarizer on the outside of the first substrate, that is, on the light incident side, in the color
  • a second polarizer is formed between the filter and the liquid crystal layer, wherein a polarization axis of the second polarizer is parallel to a polarization axis of the first polarizer.
  • the second polarizer parallel to the polarization axis of the first polarizer is added between the color filter and the liquid crystal layer, the second polarizer is transmitted.
  • the light of the polarizer has the same polarization direction as the light transmitted through the first polarizer, and the delayed light is re-filtered, thereby solving the local light leakage of the liquid crystal display device of the existing COA structure in a normally black state. The problem has improved the user experience.
  • the liquid crystal display panel provided by the embodiment of the present invention can be applied to a product having a display function, such as a television, a digital photo frame, a mobile phone, a tablet computer, etc., which is not limited by the embodiment of the present invention.
  • the liquid crystal display panel and the manufacturing method thereof are provided by the embodiment of the present invention.
  • the liquid crystal display panel includes: a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer disposed between the first substrate and the second substrate, a plurality of switching units on the inner side of the first substrate, a color filter disposed between the first substrate and the liquid crystal layer, and a first polarizer disposed outside the first substrate. a second polarizer between the color filter and the liquid crystal layer, wherein a polarization axis of the second polarizer is parallel to a polarization axis of the first polarizer.
  • the light transmitted through the second polarizer and the light transmitted through the first polarizer are transmitted.
  • the light has the same polarization direction, and the delayed light is filtered again, thereby solving the problem that the liquid crystal display device of the existing COA structure has local light leakage in the normally black state, and improves the user experience.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)
  • Optical Filters (AREA)

Abstract

提供了一种液晶显示面板（1）及其制造方法，能够解决现有COA结构的液晶显示设备在常黑状态下，出现局部漏光的问题。该液晶显示面板（1）包括：相对设置的第一基板（11）和第二基板（18）；设置于所述第一基板（11）和所述第二基板（18）之间的液晶层（17）；设置于所述第一基板（11）内侧的多个开关单元（12）；设置于所述第一基板（11）和所述液晶层（17）之间的彩色滤光片（14）；设置于所述第一基板（11）外侧的第一偏光片（10）；设置于所述彩色滤光片（14）与所述液晶层（17）之间的第二偏光片（15），其中，所述第二偏光片（15）的偏振轴与所述第一偏光片（10）的偏振轴平行。

Description

液晶显示面板及其制造方法 技术领域
本发明的实施例涉及一种液晶显示面板及其制造方法。 背景技术
近年来, TFT-LCD ( Thin Film Transistor-Liquid Crystal Display, 薄膜晶 体管液晶显示器） 已成为手机、 平板电脑等产品中使用的主流显示器。 传统 的 TFT-LCD结构为两片基板中间设置液晶层， 在其中一个基板上制备薄膜 晶体管， 用于驱动液晶的旋转， 控制每个像素的显示； 另一基板上制备 CF ( Color Filter,彩色滤光片），用于形成每个像素的色彩。而 COA( Color Filter on Array,彩色滤光片与阵列基板集成）结构的 TFT-LCD结构是将 TFT阵列 和 CF制备在同一基板上， 这种技术具有筒化工艺、 降低成本、 提高透过率 等优点。
但是， 如图 1所示， 现有 COA结构的液晶显示装置在常黑状态下， 经 常会出现局部漏光的现象。 出现局部漏光现象的原因为， 光线在进入液晶层 之前会经过彩色滤光片， 彩色滤光片会对光线发生散射， 导致光线的偏振态 发生变化， 即光线产生第一次延迟。然后光线再通过液晶层发生第二次延迟。 这样会导致局部光线延迟过量， 因此出现局部漏光的现象。 这严重影响了液 晶显示装置的显示质量， 降低了用户体验感。 发明内容
本发明的实施例提供一种液晶显示面板及其制造方法， 能够解决现有 COA结构的液晶显示设备在常黑状态下， 出现局部漏光的问题。
本发明的实施例提供了一种液晶显示面板， 包括： 相对设置的第一基板 和第二基板； 设置于所述第一基板和所述第二基板之间的液晶层； 设置于所 述第一基板出光侧的多个开关单元； 设置于所述第一基板和所述液晶层之间 的彩色滤光片； 设置于所述第一基板入光侧的第一偏光片； 设置于所述彩色 滤光片与所述液晶层之间的第二偏光片， 其中， 所述第二偏光片的偏振轴与 所述第一偏光片的偏振轴平行。
备选地， 所述液晶显示面板， 还包括： 设置于所述第二基板出光侧的第 三偏光片，其中，所述第三偏光片的偏振轴与所述第一偏光片的偏振轴垂直。
备选地， 所述液晶显示面板， 还包括： 黑矩阵， 所述黑矩阵和所述彩色 滤光片同层设置， 与所述开关单元——对应并形成多个开口区域。
备选地， 所述彩色滤光片包括彩色光阻层， 所述彩色光阻层设置于所述 多个开口区域。
备选地， 所述液晶显示面板， 还包括： 设置于所述液晶层与所述第二偏 光片之间的保护膜。
备选地， 所述开关单元为薄膜晶体管。
本发明的实施例提供了一种液晶显示面板的制造方法， 包括： 相对设置 第一基板和第二基板； 在所述第一基板和第二基板之间形成液晶层； 在所述 第一基板出光侧形成多个开关单元； 在所述第一基板和所述液晶层之间形成 彩色滤光片； 在所述第一基板入光侧形成第一偏光片； 在所述彩色滤光片与 所述液晶层之间形成第二偏光片， 其中， 所述第二偏光片的偏振轴与所述第 一偏光片的偏振轴平行。
备选地， 根据本发明实施例的液晶显示面板的制造方法， 还包括： 在所 述第二基板出光侧形成第三偏光片， 其中， 所述第三偏光片的偏振轴与所述 第一偏光片的偏振轴垂直。
备选地， 所述液晶显示面板的制造方法， 还包括： 在所述开关单元上方 形成黑矩阵， 所述黑矩阵与所述开关单元——对应且所述黑矩阵之间形成多 个开口区域； 在所述多个开口区域形成所述彩色滤光片的彩色光阻层。
备选地， 所述形成第二偏光片， 包括： 将各向同性的液晶涂覆在所述彩 色滤光片上并干燥以形成所述第二偏光片， 或者将添加有反应基团的液晶涂 覆在所述彩色滤光片上并干燥后， 进行光固化及热固化以形成所述第二偏光 片。
备选地， 所述液晶显示面板的制造方法， 还包括： 在所述液晶层与所述 第二偏光片之间形成保护膜。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 筒单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1为现有的液晶显示面板在常黑状态下的漏光现象；
图 2为本发明实施例提供的液晶显示面板的截面图；
图 3为现有的液晶显示面板的漏光量模拟曲线图；
图 4为本发明实施例的液晶显示面板的漏光量模拟曲线图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图，对本发明实施例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发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
需要说明的是： 本发明实施例中的 "上" "下" "内" "外" 只是参照 附图对本发明的实施例进行说明， 不作为限定用语。
本发明实施例提供的了一种液晶显示面板， 包括： 相对设置的第一基板 和第二基板； 设置于所述第一基板和所述第二基板之间的液晶层； 设置于所 述第一基板内侧， 即， 出光侧， 的多个开关单元； 设置于所述第一基板和所 述液晶层之间的彩色滤光片； 设置于所述第一基板外侧， 即， 入光侧的第一 偏光片； 设置于所述彩色滤光片与所述液晶层之间的第二偏光片， 其中， 所 述第二偏光片的偏振轴与所述第一偏光片的偏振轴平行。
下面， 结合附图对根据本发明实施例的液晶显示面板的结构进行示例性 地说明。
示例性的， 如图 2所示， 本发明实施例提供一种液晶显示面板 1包括： 相对设置的第一基板 11和第二基板 18, 其中， 第一基板 11和第二基板 18 为透明基板， 可以是玻璃基板、 石英基板或透明树脂基板， 但不限于以上几 种；
设置于第一基板 11和第二基板 18之间的液晶层 17; 设置于第一基板 11 内侧， 即， 出光侧， 的多个开关单元 12, 其中， 开 关单元 12可以为薄膜晶体管， 在开关单元 12形成的中间区域还设置有像素 电极 13, 与开关单元 12电性连接；
设置于第一基板 11和液晶层 17之间的彩色滤光片 14;
设置于第一基板 11外侧， 即， 入光侧的第一偏光片 10, 使入射至液晶 显示面板的光线具有偏振方向；
设置于彩色滤光片 14与液晶层 17之间的第二偏光片 15 , 其中， 第二偏 光片 15的偏振轴与第一偏光片 10的偏振轴平行，以使得透过第二偏光片 15 的光线与透过第一偏光片 10的光线具有相同的偏振方向，这样，经过彩色滤 光片后因为散射导致的光线可以被校正，只有偏振方向和第二偏光片 15—致 的光线才能通过。
其中， 在第二基板 18外侧， 即， 出光侧还设置有与第一偏光片 10的偏 振轴垂直的第三偏光片 19。
备选地， 在彩色滤光片 14的同层还设置有黑矩阵 20, 黑矩阵 20与开关 单元 12——对应并形成多个开口区域， 彩色滤光片 14包括彩色光阻层， 彩 色光阻层设置于多个开口区域内， 需要说明的是： 黑矩阵也可以单独设置而 不是与彩色滤光片 14同层设置，只需要在开关单元 12与液晶层 17之间实现 对开关单元 12的遮挡即可， 但同层设置彩色滤光片 14和黑矩阵 20, 可以减 小液晶显示面板的厚度和筒化生产。
备选地， 在第二偏光片 15和液晶层 17之间还设置有保护膜 16, 其中， 保护膜 16可以为在水中稳定的（不与水发生反应）、 透明的、 热稳定性良好 的任意物质，保护膜 16可以避免第二偏光片 15直接与液晶层 17接触，提高 第二偏光片 15的耐湿、 耐化学性。
本发明实施例所提供的液晶显示面板 1 , 由于在彩色滤光片 14与液晶层 17之间增设了与第一偏光片 10偏振轴平行的第二偏光片 15, 因此， 使得透 过第二偏光片 15的光线与透过第一偏光片 10的光线具有相同的偏振方向， 将发生了延迟的光线再次进行滤光， 从而解决了现有液晶显示装置在常黑状 态下， 出现局部漏光的问题， 提高了用户体验感。
图 3示出了现有的 ADS ( Advanced Super Dimension Switch, 高级超维 场转换技术）模式的液晶显示面板由于光线延迟引起的漏光量模拟曲线图， 如图 3所示， 随着延迟量的增加， 液晶显示面板的漏光量也增加， 而通常情 况下， 眼睛能够感知的漏光量在 0.4尼特， 也就是说， 液晶显示面板的延迟 值在 3纳米以上时则产生光斑。
图 4示出了本发明实施例提供的具有 COA结构的液晶显示面板由于光 线延迟引起的漏光量模拟曲线图， 如图 4所示， 当液晶显示面板的延迟量在 0纳米至 5纳米的范围内时，液晶显示面板的漏光量小于 0.4尼特，与现有技 术相比， 减少了约 50%的漏光量， 解决了漏光问题。
需要说明的是： 上述的漏光量模拟是以 ADS模式的液晶显示面板为例， 但本发明的实施例也同样适用于 TN ( Twisted Nematic , 扭曲向列） 、 IPS(In-Plane Switching, 平面转换技术)等其他模式的液晶显示面板。
本发明实施例提供的液晶显示面板， 包括： 相对设置的第一基板和第二 基板， 设置于所述第一基板和所述第二基板之间的液晶层， 设置于所述第一 基板内侧的多个开关单元， 设置于所述第一基板和所述液晶层之间的彩色滤 光片， 设置于所述第一基板外侧的第一偏光片， 设置于所述彩色滤光片与所 述液晶层之间的第二偏光片， 其中， 所述第二偏光片的偏振轴与所述第一偏 光片的偏振轴平行。 通过该方案， 由于在彩色滤光片与液晶层之间增设了与 第一偏光片偏振轴平行的第二偏光片， 因此， 使得透过第二偏光片的光线与 透过第一偏光片的光线具有相同的偏振方向， 将发生了延迟的光线重新再次 进行滤光， 从而解决了现有 COA结构的液晶显示设备在常黑状态下， 出现 局部漏光的问题， 提高了用户体验感。
本发明的实施例还提供一种液晶显示面板的制造方法， 包括：
相对设置第一基板 11和第二基板 18;
在第一基板 11和第二基板 18之间形成液晶层 17;
在第一基板 11内侧， 即， 出光侧形成多个开关单元 12;
在第一基板 11和液晶层 17之间形成彩色滤光片 14;
在第一基板外侧， 即， 入光侧形成第一偏光片 10;
在彩色滤光片与液晶层之间形成第二偏光片 15, 其中， 第二偏光片 15 的偏振轴与第一偏光片 10的偏振轴平行。
其中，还在第二基板 18外侧， 即， 出光侧形成偏振轴方向与第一偏光片 10垂直的第三偏光片 19。 其中， 在开关单元 12形成的中间区域还形成有像素电极 13, 与开关单 元 12电性连接。
备选地，在彩色滤光片 14同层形成黑矩阵 20,黑矩阵 20与开关单元 12 一一对应并形成多个开口区域，彩色滤光片 14包括彩色光阻层，彩色光阻层 形成于多个开口区域， 需要说明的是： 黑矩阵也可以单独形成于别层， 只需 要在开关单元 12与液晶层 17之间实现对开关单元 12的遮挡即可，但在彩色 滤光片 14同层形成黑矩阵 20, 可以减小液晶显示面板的厚度和筒化生产。
备选地， 在第二偏光片 15和液晶层 17之间形成保护膜 16, 其中， 保护 膜 16可以为在水中稳定的（不与水发生反应）、 透明的、 热稳定性良好的任 意物质，保护膜 16可以避免第二偏光片 15直接与液晶层 17接触，提高第二 偏光片 15的耐湿、 耐化学性。
示例性的， 下面具体描述图 2所述的液晶显示面板的制造方法制造该液 晶显示面板的方法包括：
5101、 第一基板的入光侧形成第一偏光片。
具体地， 在第一基板 11的入光侧贴附第一偏光片 10。
5102、 在第一基板的出光侧形成多个开关单元以及与开关单元连接的像 素电极。
具体地， 在 S101 步骤后得到的第一基板上依次形成用于形成开关单元 的部件的各层， 通过构图工艺形成开关单元的各部件， 形成像素电极， 使像 素电极和开关单元电性连接。
5103、 在形成有所述开关元件和像素电极的第一基板上形成彩色滤光片 以及黑矩阵。
具体地， 在 S102 步骤后得到的第一基板上形成多个黑矩阵， 所述黑矩 阵与所述开关单元——对应且所述黑矩阵之间形成多个开口区域， 彩色滤光 片包括彩色光阻层， 所述彩色光阻层形成于所述多个开口区域。
5104、 在彩色滤光片上形成第二偏光片。
具体地， 在 S103步骤后得到的第一基板 11上形成第二偏光片， 第二偏 光片的偏振轴与第一偏光片的偏振轴平行， 以使得透过所述第二偏光片的光 线与透过所述第一偏光片的光线具有相同的偏振方向。
示例性地， 形成第二偏光片， 包括： 将各向同性的液晶涂覆 ( coating )在所述彩色滤光片上并干燥以形成所 述第二偏光片， 或者将添加有反应基团的液晶涂覆在所述彩色滤光片上并干 燥后， 进行光固化及热固化以形成所述第二偏光片。
示例性地， 所述涂覆方法可以为 PECVD ( Plasma Enhanced Chemical Vapor Deposition, 等离子体增强化学气相沉积） 、 LPCVD ( Low Pressure Chemical Vapor Deposition, 低压化学气相沉积） 、 APCVD ( Atmospheric Pressure Chemical Vapor Deposition , 大气压化学气相沉积） 、 ECR-CVD ( Electron Cyclotron Resonance -Chemical Vapor Deposition, 电子回旋 i皆振 4匕 学气相沉积）或者溅射等。
S105、 在第二偏光片上形成保护膜。
为了避免第二偏光片直接与液晶层接触， 提高第二偏光片的耐湿、 耐化 学性， 可以在第二偏光片上形成保护膜， 故该保护膜应为在水中稳定的 （不 与水发生反应） 、 透明的、 热稳定性良好的任意物质。
S106、 将第二基板与第一基板对盒形成液晶盒， 并在其中注入液晶以形 成液晶层。
将第二基板与第一基板对盒，然后在第一基板和第二基板之间注入液晶， 以形成液晶层。
需要补充的是， 为了维持保护膜和第二基板之间的间隙维持不变， 保护 膜和第二基板之间可以设置隔垫物以维持该间隙，进而液晶设置于该间隙中。 其中， 隔垫物可以是玻璃纤维材质的球形隔垫物， 也可以是树脂材质的棒柱 状隔垫物， 本发明的实施例不做限制。
需要说明的是， 以上步骤仅为流程示意， 在具体实施的过程中， 可以适 当进行顺序的变换。
本发明实施例提供的液晶显示面板的制造方法， 包括相对设置第一基板 和第二基板， 在所述第一基板和第二基板之间形成液晶层， 在所述第一基板 内侧， 即， 出光侧形成多个开关单元， 在所述第一基板和所述液晶层之间形 成彩色滤光片， 在所述第一基板外侧， 即， 入光侧形成第一偏光片， 在所述 彩色滤光片与所述液晶层之间形成第二偏光片， 其中， 所述第二偏光片的偏 振轴与所述第一偏光片的偏振轴平行。 通过该方案， 由于彩色滤光片与液晶 层之间增设了与第一偏光片偏振轴平行的第二偏光片， 因此， 使得透过第二 偏光片的光线与透过第一偏光片的光线具有相同的偏振方向， 将发生了延迟 的光线重新进行滤光， 从而解决了现有 COA结构的液晶显示装置在常黑状 态下， 出现局部漏光的问题， 提高了用户体验感。
本发明实施例提供的液晶显示面板， 可以应用到电视、数码相框、手机、 平板电脑等具有显示功能的产品中， 本发明的实施例对此不做限制。
本发明实施例提供的液晶显示面板及其制造方法， 液晶显示面板包括： 相对设置的第一基板和第二基板， 设置于所述第一基板和所述第二基板之间 的液晶层， 设置于所述第一基板内侧的多个开关单元， 设置于所述第一基板 和所述液晶层之间的彩色滤光片， 设置于所述第一基板外侧的第一偏光片， 设置于所述彩色滤光片与所述液晶层之间的第二偏光片， 其中， 所述第二偏 光片的偏振轴与所述第一偏光片的偏振轴平行。 通过该方案， 由于在彩色滤 光片与液晶层之间增设了与第一偏光片偏振轴平行的第二偏光片， 因此， 使 得透过第二偏光片的光线与透过第一偏光片的光线具有相同的偏振方向， 将 发生了延迟的光线再次进行滤光， 从而解决了现有 COA结构的液晶显示设 备在常黑状态下， 出现局部漏光的问题， 提高了用户体验感。
以上所述， 仅为本发明的具体实施方式， 但本发明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发明揭露的技术范围内， 可轻易 想到变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保护 范围应以所述权利要求的保护范围为准。

Claims

权利要求书
1、 一种液晶显示面板， 包括：
相对设置的第一基板和第二基板；
设置于所述第一基板和所述第二基板之间的液晶层；
设置于所述第一基板出光侧的多个开关单元；
设置于所述第一基板和所述液晶层之间的彩色滤光片；
设置于所述第一基板入光侧的第一偏光片； 以及
设置于所述彩色滤光片与所述液晶层之间的第二偏光片， 其中， 所述第 二偏光片的偏振轴与所述第一偏光片的偏振轴平行。
2、 根据权利要求 1所述的液晶显示面板， 还包括：
设置于所述第二基板出光侧的第三偏光片， 其中， 所述第三偏光片的偏 振轴与所述第一偏光片的偏振轴垂直。
3、 根据权利要求 1所述的液晶显示面板， 还包括：
黑矩阵， 所述黑矩阵和所述彩色滤光片同层设置， 与所述开关单元一一 对应并形成多个开口区域。
4、根据权利要求 3所述的液晶显示面板，其中所述彩色滤光片包括彩色 光阻层， 所述彩色光阻层设置于所述多个开口区域。
5、 根据权利要求 1所述的液晶显示面板， 还包括：
设置于所述液晶层与所述第二偏光片之间的保护膜。
6、根据权利要求 1-5中任意一项所述的液晶显示面板， 其中所述开关单 元为薄膜晶体管。
7、 根据权利要求 1所述的液晶显示面板， 还包括：
黑矩阵， 所述黑矩阵与所述彩色滤光片非同层设置且在所述开关单元与 所述液晶层之间， 与所述开关单元——对应并形成多个开口区域。
8、根据权利要求 7所述的液晶显示面板，其中所述彩色滤光片对应于所 述开口区域之间的区域设置。
9、 一种液晶显示面板的制造方法， 包括：
相对设置第一基板和第二基板；
在所述第一基板和第二基板之间形成液晶层； 在所述第一基板出光侧形成多个开关单元；
在所述第一基板和所述液晶层之间形成彩色滤光片；
在所述第一基板入光侧形成第一偏光片； 以及
在所述彩色滤光片与所述液晶层之间形成第二偏光片， 其中， 所述第二 偏光片的偏振轴与所述第一偏光片的偏振轴平行。
10、 根据权利要求 9所述的制造方法， 还包括：
在所述第二基板出光侧形成第三偏光片， 其中， 所述第三偏光片的偏振 轴与所述第一偏光片的偏振轴垂直。
11、 根据权利要求 9所述的制造方法， 还包括：
在所述开关单元上方形成黑矩阵， 所述黑矩阵与所述开关单元——对应 且所述黑矩阵之间形成多个开口区域；
在所述多个开口区域形成所述彩色滤光片的彩色光阻层。
12、根据权利要求 9所述的制造方法， 其中所述形成第二偏光片， 包括： 将各向同性的液晶涂覆在所述彩色滤光片上并干燥以形成所述第二偏光 片， 或者将添加有反应基团的液晶涂覆在所述彩色滤光片上并干燥后， 进行 光固化及热固化以形成所述第二偏光片。
13、 根据权利要求 9-12任意一项所述的制造方法， 还包括：
在所述液晶层与所述第二偏光片之间形成保护膜。
14、 根据权利要求 9所述的制造方法， 还包括： 在所述开关单元与所述 液晶层之间形成黑矩阵， 所述黑矩阵与所述彩色滤光片非同层设置且与所述 开关单元——对应设置。
15、根据权利要求 14所述的制造方法，其中所述黑矩阵中形成多个开口 区域， 所述彩色滤光片对应于所述开口区域之间的区域设置。
PCT/CN2013/078630 2013-03-25 2013-07-02 液晶显示面板及其制造方法 Ceased WO2014153891A1 (zh)

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TWI529451B (zh) * 2014-03-13 2016-04-11 友達光電股份有限公司 基板結構與顯示面板
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CN1704811A (zh) * 2004-05-28 2005-12-07 鸿富锦精密工业（深圳）有限公司 液晶显示装置
JP2008090317A (ja) * 1996-07-31 2008-04-17 Sharp Corp 液晶装置
CN101276092A (zh) * 2008-05-06 2008-10-01 友达光电股份有限公司 抑制漏光的色彩模块
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CN101276092A (zh) * 2008-05-06 2008-10-01 友达光电股份有限公司 抑制漏光的色彩模块
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