WO2019192039A1 - 液晶面板及其制作方法 - Google Patents

液晶面板及其制作方法 Download PDF

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Publication number
WO2019192039A1
WO2019192039A1 PCT/CN2018/084473 CN2018084473W WO2019192039A1 WO 2019192039 A1 WO2019192039 A1 WO 2019192039A1 CN 2018084473 W CN2018084473 W CN 2018084473W WO 2019192039 A1 WO2019192039 A1 WO 2019192039A1
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Prior art keywords
liquid crystal
crystal panel
reflection film
glass substrate
panel according
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PCT/CN2018/084473
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English (en)
French (fr)
Inventor
莫超德
孙杰
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深圳市华星光电技术有限公司
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Priority to US16/077,416 priority Critical patent/US20210080777A1/en
Publication of WO2019192039A1 publication Critical patent/WO2019192039A1/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
    • G02F1/133502—Antiglare, refractive index matching 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
    • 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
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • 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
    • 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
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133565—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements inside the LC elements, i.e. between the cell substrates
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13398—Spacer materials; Spacer properties
    • 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
    • G02F1/13606—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit having means for reducing parasitic capacitance
    • 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
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/38—Anti-reflection arrangements
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/40—Arrangements for improving the aperture ratio

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a liquid crystal panel and a method of fabricating the same.
  • the COA (Color Filter On Array) technology is an integrated technology for directly forming a color filter layer on an array substrate, which can effectively solve the color filter color in the process of forming a box. It is a mainstream technology by blocking the light leakage caused by the alignment deviation between the pixel electrodes and significantly increasing the display pixel aperture ratio and reducing the parasitic capacitance.
  • the white light can directly penetrate the glass and the liquid crystal directly hits the array substrate, thereby oxidizing the ITO on the side of the cover glass and the color filter substrate (CF substrate).
  • Each surface of the indium tin) electrode, the liquid crystal or the ITO electrode on the side of the array substrate (Array substrate) forms a reflecting surface, and the reflection effect is intensified, which is particularly remarkable in the dark state, which seriously affects the visual effect.
  • the current countermeasure is to attach a polarizer having a lower reflectance to the outer surface of the glass, and the manufacturing cost is increased due to the high price of the polarizer.
  • the present invention provides a liquid crystal panel and a manufacturing method thereof, which can reduce the reflective effect of the display device, achieve low cost, and contribute to improvement of visual effects.
  • a liquid crystal panel comprising a glass substrate and an array substrate disposed opposite to each other, and a liquid crystal, an anti-reflection film, and a color filter disposed between the glass substrate and the array substrate, wherein the anti-reflection film is disposed on the glass Inside the substrate, the color filter is disposed inside the array substrate.
  • the anti-reflection film is formed on an inner surface of the glass substrate.
  • the liquid crystal panel further includes a transparent electrode layer and a black matrix, the transparent electrode layer is disposed on a surface of the anti-reflection film facing away from the glass substrate, and the black matrix is disposed on the The transparent electrode layer faces away from the surface of the glass substrate and is located in a non-display area of the liquid crystal panel.
  • the liquid crystal panel further includes a plurality of spacer pillars, and one end of the spacer pillars is disposed on the black matrix, and the other end is used to abut on a side of the array substrate.
  • the refractive index n of the anti-reflection film satisfies: n 1 ⁇ n ⁇ n 2 , wherein n 1 is a refractive index of the glass substrate, and n 2 is a refractive index of the transparent electrode layer. .
  • the thickness e of the anti-reflection film satisfies: Where ⁇ is 460 to 660 nm, and k is a natural number.
  • the refractive index n of the anti-reflection film satisfies:
  • ⁇ 550 nm
  • the anti-reflection film is SiO x N y , Al 2 O 3 or a resin.
  • Another object of the present invention is to provide a method for fabricating a liquid crystal panel, comprising:
  • An array substrate is provided, the array substrate is assembled with the glass substrate, and a liquid crystal is filled between the array substrate and the glass substrate.
  • the thickness e of the anti-reflection film satisfies: Wherein n is the refractive index of the anti-reflection film, ⁇ is 460-660 nm, and k is a natural number.
  • the color filter is disposed on the array substrate side, and the anti-reflection film is disposed on the inner side of the opposite substrate of the array substrate, which is beneficial to reducing the light reflectance of the liquid crystal panel and improving the visual effect.
  • FIG. 1 is a schematic structural view of a liquid crystal panel according to an embodiment of the present invention.
  • FIG. 2 is a schematic view showing a manufacturing principle of a liquid crystal panel according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a method of fabricating a liquid crystal panel according to an embodiment of the present invention.
  • a liquid crystal panel according to an embodiment of the present invention includes a glass substrate 10 and an array substrate 20 disposed opposite to each other, and a liquid crystal 30, an anti-reflection film 11, and a color filter 21 disposed between the glass substrate 10 and the array substrate 20, wherein The anti-reflection film 11 is disposed inside the glass substrate 10, and the color filter 21 is disposed inside the array substrate 20.
  • the color filter 21 and the pixel unit are fabricated on the same substrate, and the array substrate 20 does not need to consider the color filter in the process of aligning with the glass substrate 10.
  • an array of TFTs (Thin Film Transistors) 200 are formed on the surface of the array substrate 20, a color filter 21 is disposed between the liquid crystals 30 and the TFTs 200, and an electrode layer 22 is further disposed on the surface of the color filter 21. . Further, the alignment film located on the upper and lower sides of the liquid crystal 30 is not shown in this embodiment.
  • the anti-reflection film 11 is formed on the inner surface of the glass substrate 10, which may be made of SiO x N y , Al 2 O 3 or a resin-based material, which is low in cost and can effectively reduce reflection generated by the liquid crystal panel. Light, which improves visuals and enhances the viewing experience.
  • the transparent electrode layer 12 and the black matrix 13 are further disposed on the opposite side of the array substrate 20 of the liquid crystal panel.
  • the transparent electrode layer 12 is disposed on the surface of the anti-reflection film 11 facing away from the glass substrate 10, and the black matrix 13 is disposed on the transparent electrode layer 12. It faces away from the surface of the glass substrate 10 and is located in the non-display area of the liquid crystal panel, and is opposite to the interval between the pixels.
  • the transparent electrode layer 12 is generally made of indium tin oxide (ITO), and the black matrix 13 can be made of a black photoresist material.
  • a plurality of spacer pillars 14 for supporting the two side substrates to maintain a uniform thickness of the liquid crystal panel may also be formed on the side of the glass substrate 10, that is, one end of the spacer pillar 14 is disposed on the black matrix 13 and the other end is extended. Up to the side of the array substrate 20, the spacer pillar 14 is located on the black matrix 13, so that the normal display of the liquid crystal panel is not affected.
  • the refractive index n of the anti-reflection film 11 satisfies: n 1 ⁇ n ⁇ n 2 , where n 1 is the refractive index of the glass substrate 10 and n 2 is the refractive index of the transparent electrode layer 12.
  • the refractive index n of the anti-reflection film 11 satisfies:
  • the thickness e of the anti-reflection film 11 satisfies: Where ⁇ is 460 to 660 nm, and k is a natural number. Further, ⁇ is referenced to a wavelength of 550 nm of green light that is more sensitive to human vision.
  • the anti-reflection film 11 is preferably made of SiO x N y (refractive index: 1.46 to 1.92), Al 2 O 3 (refractive index: 1.59 to 1.77), or a resin-based material, and may be formed by laminating a plurality of layers.
  • the present invention also provides a method for fabricating a liquid crystal panel, which mainly includes:
  • a glass substrate 10 is provided, and an anti-reflection film 11 (process A in FIG. 2) is formed on the surface of the glass substrate 10 by CVD (Chemical Vapor Deposition) or PVD (Physical Vapor Deposition), wherein the anti-reflection film 11 is made of SiO x N y , Al 2 O 3 or a resin-based material, and its refractive index n satisfies: n 1 ⁇ n ⁇ n 2 , where n 1 is the refractive index of the glass substrate 10, and n 2 is a transparent electrode layer.
  • CVD Chemical Vapor Deposition
  • PVD Physical Vapor Deposition
  • the refractive index n of the anti-reflection film 11 satisfies:
  • the thickness e of the anti-reflection film 11 satisfies: Where ⁇ is 460 to 660 nm, and k is a natural number. Further, ⁇ is referenced to a wavelength of 550 nm of green light that is more sensitive to human vision;
  • the transparent electrode layer 12 is selected from indium tin oxide (ITO);
  • a black matrix 13 is formed on the surface of the transparent electrode layer 12 by a photolithography process, and the black matrix 13 is located in a non-display area of the liquid crystal panel (process C in FIG. 2), and the black matrix 13 is further made of a black photoresist material;
  • an array substrate 20 is provided, the array substrate 20 and the glass substrate 10 are assembled, and the liquid crystal 30 is filled between the array substrate 20 and the glass substrate 10.
  • the color filter 21 is disposed inside the array substrate 20 so that the color The filter 21 and the pixel unit are formed on the same substrate, and the electrode layer 22 is also formed on the surface of the color filter 21.
  • the black matrix 13 and the spacer pillar 14 can be made of the same photoresist material, so that step S03 and step S04 can be combined into one process, which can simplify the manufacturing process, reduce the manufacturing cost, and improve the bonding of the spacer pillars 14. strength.
  • an anti-reflection film is disposed between the glass substrate and the transparent electrode layer, the refractive index of the anti-reflection film is larger than the refractive index of the glass substrate and smaller than the refractive index of the transparent electrode layer, and the light-transmissive medium is entered from the light-diffusing medium by using light.
  • the formation of a half-wave loss can reduce the reflected light energy, thereby reducing the reflectance of light in the liquid crystal display device, thereby achieving the purpose of improving the visual effect.

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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)
  • Microelectronics & Electronic Packaging (AREA)
  • Liquid Crystal (AREA)
  • Optical Filters (AREA)

Abstract

本发明公开了一种液晶面板及其制作方法，液晶面板包括相对设置的玻璃基板和阵列基板以及设于所述玻璃基板和所述阵列基板之间的液晶、减反膜、彩色滤光片，所述减反膜设于所述玻璃基板内侧，所述彩色滤光片设于所述阵列基板内侧。本发明通过将彩色滤光片设置在阵列基板侧，并在阵列基板的对侧基板的内侧设置有减反膜，有利于降低液晶面板的光线反射率，改善视觉效果。

Description

液晶面板及其制作方法 技术领域
本发明涉及液晶显示技术领域，尤其涉及一种液晶面板及其制作方法。
背景技术
COA(Color Filter On Array，彩色滤光片集成在阵列基板上)技术是将彩色滤光层直接制作在阵列基板上的一种集成技术，它能够有效解决成盒工艺中因彩色滤光片色阻与像素电极之间的对位偏差造成的漏光问题，并能显著提升显示像素开口率及减少寄生电容，从而成为主流技术。
但是，这种显示屏由于没有彩色滤光层的过滤作用，白光可直接穿透玻璃、液晶直接射到阵列基板，从而在盖板玻璃、彩色滤光片基板(CF基板)侧的ITO(氧化铟锡)电极、液晶或阵列基板(Array基板)侧的ITO电极等各个表面形成反射面，反光效果加剧，在暗态时表现尤为明显，严重影响了视觉效果。为了降低反射率，目前的对策是在玻璃外表面粘贴一层反射率更低的偏光片，由于偏光片价格很高，导致制作成本增加。
发明内容
鉴于现有技术存在的不足，本发明提供了一种液晶面板及其制作方法，可以降低显示装置的反光效果，实现成本低且有助于改善视觉效果。
为了实现上述的目的，本发明采用了如下的技术方案：
一种液晶面板，包括相对设置的玻璃基板和阵列基板以及设于所述玻璃基板和所述阵列基板之间的液晶、减反膜、彩色滤光片，所述减反膜设于所述玻璃基板内侧，所述彩色滤光片设于所述阵列基板内侧。
作为其中一种实施方式，所述减反膜形成在所述玻璃基板内表面。
作为其中一种实施方式，所述的液晶面板还包括透明电极层和黑色矩阵，所述透明电极层设于所述减反膜背向所述玻璃基板的表面，所述黑色矩阵设于所述透明电极层背向所述玻璃基板的表面，并位于液晶面板的非显示区。
作为其中一种实施方式，所述的液晶面板还包括多根隔垫柱，所述隔垫柱一端设于所述黑色矩阵上，另一端用于抵接在所述阵列基板所在侧。
作为其中一种实施方式，所述减反膜的折射率n满足：n 1＜n＜n 2，其中，n 1为所述玻璃基板的折射率，n 2为所述透明电极层的折射率。
作为其中一种实施方式，所述减反膜的厚度e满足：
Figure PCTCN2018084473-appb-000001
其中，λ为460～660nm，k为自然数。
作为其中一种实施方式，所述减反膜的折射率n满足：
Figure PCTCN2018084473-appb-000002
作为其中一种实施方式，λ＝550nm，和/或，所述减反膜为SiO xN y、Al 2O 3或树脂类。
本发明的另一目的在于提供一种液晶面板的制作方法，包括：
提供一玻璃基板，并在所述玻璃基板表面制作减反膜；
在所述减反膜表面沉积一层透明电极层；
在所述透明电极层表面用光刻工艺制作黑色矩阵，所述黑色矩阵位于液晶面板的非显示区；
在所述黑色矩阵表面光刻形成隔垫柱；
提供一阵列基板，将所述阵列基板与所述玻璃基板组立，并在所述阵列基板与所述玻璃基板之间填充液晶。
作为其中一种实施方式，所述减反膜的厚度e满足：
Figure PCTCN2018084473-appb-000003
其中，n为所述减反膜的折射率，λ为460～660nm，k为自然数。
本发明通过将彩色滤光片设置在阵列基板侧，并在阵列基板的对侧基板的内侧设置有减反膜，有利于降低液晶面板的光线反射率，改善视觉效果。
附图说明
图1为本发明实施例的液晶面板的结构示意图；
图2为本发明实施例的液晶面板的制作原理示意图；
图3为本发明实施例的液晶面板的制作方法示意图。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
参阅图1，本发明实施例的液晶面板包括相对设置的玻璃基板10和阵列基板20以及设于玻璃基板10和阵列基板20之间的液晶30、减反膜11、彩色滤光片21，其中，减反膜11设于玻璃基板10内侧，彩色滤光片21设于阵列基板20内侧。
通过将彩色滤光片21设置在阵列基板20内侧，使得彩色滤光片21与像素单元制作在同一块基板上，阵列基板20在与玻璃基板10对位的过程中不需要考虑彩色滤光片21的对位，因此，可以避免对位偏差造成的漏光问题。
可以理解的是，阵列基板20表面制作有阵列的TFT(Thin Film Transistor，即薄膜晶体管)200，彩色滤光片21位于液晶30与TFT200之间，彩色滤光片21表面还设有电极层22。另外，位于液晶30上下侧的配向膜在本实施例中并未示出。
作为其中一种实施方式，减反膜11形成在玻璃基板10内表面，其可以为SiO xN y、Al 2O 3或树脂类材料制成，实现成本低，可以有效减少液晶面板产生的反射光，从而改善视觉效果，提升观看体验。
在液晶面板的阵列基板20对侧还设置有透明电极层12和黑色矩阵13，其中，透明电极层12设于减反膜11背向玻璃基板10的表面，黑色矩阵13设于透明电极层12背向玻璃基板10的表面，并位于液晶面板的非显示区，与像素间的间隔正对。其中，透明电极层12一般选用氧化铟锡(ITO)，黑色矩阵13可以采用黑色光阻材料制成。
与此同时，液晶面板中多根用于支撑两侧基板以保持均一盒厚的隔垫柱14也可以形成在玻璃基板10侧，即隔垫柱14一端设于黑色矩阵13上，另一端延伸至抵接在阵列基板20所在侧，该隔垫柱14位于黑色矩阵13上，因此不会影响液晶面板的正常显示。
减反膜11的折射率n满足：n 1＜n＜n 2，其中，n 1为玻璃基板10的折射率，n 2为透明电极层12的折射率。作为其中一种较佳的实施方式，减反膜11的折射 率n满足：
Figure PCTCN2018084473-appb-000004
减反膜11的厚度e满足：
Figure PCTCN2018084473-appb-000005
其中，λ为460～660nm，k为自然数。进一步地，λ以对人视觉较为敏感的绿光的波长550nm为参考。减反膜11以SiO xN y(折射率为1.46～1.92)、Al 2O 3(折射率为1.59～1.77)或树脂类材料制成为宜，其可以为多层膜层叠而成。
通过这样的设置，光线自外界射入液晶面板，需要依次经过玻璃基板10、减反膜11、透明电极层12，光线从光疏介质进入光密介质形成半波损失，可以减少反射光能量，从而降低液晶面板的光线反射率，改善液晶面板的视觉效果。
如图2和图3所示，本发明还提供了一种液晶面板的制作方法，主要包括：
S01、提供一玻璃基板10，并在玻璃基板10表面利用CVD(化学气相沉积)或PVD(物理气相沉积)等方式制作减反膜11(如图2中的制程A)，其中，减反膜11采用SiO xN y、Al 2O 3或树脂类材料制成，其折射率n满足：n 1＜n＜n 2，其中，n 1为玻璃基板10的折射率，n 2为透明电极层12的折射率，更进一步地，减反膜11的折射率n满足：
Figure PCTCN2018084473-appb-000006
减反膜11的厚度e满足：
Figure PCTCN2018084473-appb-000007
其中，λ为460～660nm，k为自然数。进一步地，λ以对人视觉较为敏感的绿光的波长550nm为参考；
S02、在减反膜11表面使用磁控溅射或气相沉积工艺沉积一层透明电极层12(如图2中的制程B)，这里，透明电极层12选用氧化铟锡(ITO)；
S03、在透明电极层12表面用光刻工艺制作黑色矩阵13，黑色矩阵13位于液晶面板的非显示区(如图2中的制程C)，黑色矩阵13进一步采用黑色光阻材料制成；
S04、在黑色矩阵13表面光刻形成隔垫柱14(如图2中的制程D)，作为彩膜隔垫物；
S05、提供一阵列基板20，将阵列基板20与玻璃基板10组立，并在阵列基板20与玻璃基板10之间填充液晶30，其中，彩色滤光片21设置在阵列基板20内侧，使得彩色滤光片21与像素单元制作在同一块基板上，彩色滤光片21表面还制作有电极层22。
其中，黑色矩阵13与隔垫柱14可以采用相同的光阻材料制成，这样，步骤S03和步骤S04可以合并为一个制程，可以简化制作工艺，降低制作成本，并提升隔垫柱14的结合强度。
本发明通过在玻璃基板与透明电极层之间设置有减反膜，减反膜的折射率大于玻璃基板的折射率且小于透明电极层的折射率，通过利用光从光疏介质进入光密介质形成半波损失可以减少反射光能量，从而降低液晶显示装置中光线的反射率，以此实现改善视觉效果的目的。
以上所述仅是本申请的具体实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。

Claims (17)

  1. 一种液晶面板，其中，包括相对设置的玻璃基板和阵列基板以及设于所述玻璃基板和所述阵列基板之间的液晶、减反膜、彩色滤光片，所述减反膜设于所述玻璃基板内侧，所述彩色滤光片设于所述阵列基板内侧。
  2. 根据权利要求1所述的液晶面板，其中，所述减反膜形成在所述玻璃基板内表面。
  3. 根据权利要求2所述的液晶面板，其中，还包括透明电极层和黑色矩阵，所述透明电极层设于所述减反膜背向所述玻璃基板的表面，所述黑色矩阵设于所述透明电极层背向所述玻璃基板的表面，并位于液晶面板的非显示区。
  4. 根据权利要求3所述的液晶面板，其中，还包括多根隔垫柱，所述隔垫柱一端设于所述黑色矩阵上，另一端用于抵接在所述阵列基板所在侧。
  5. 根据权利要求3所述的液晶面板，其中，所述减反膜的折射率n满足：n 1＜n＜n 2，其中，n 1为所述玻璃基板的折射率，n 2为所述透明电极层的折射率。
  6. 根据权利要求5所述的液晶面板，其中，所述减反膜的厚度e满足：
    Figure PCTCN2018084473-appb-100001
    其中，λ为460～660nm，k为自然数。
  7. 根据权利要求6所述的液晶面板，其中，所述减反膜的折射率n满足：
    Figure PCTCN2018084473-appb-100002
  8. 根据权利要求6所述的液晶面板，其中，λ＝550nm，和/或，所述减反膜为SiO xN y、Al 2O 3或树脂类。
  9. 根据权利要求4所述的液晶面板，其中，所述减反膜的折射率n满足：n 1＜n＜n 2，其中，n 1为所述玻璃基板的折射率，n 2为所述透明电极层的折射率。
  10. 根据权利要求9所述的液晶面板，其中，所述减反膜的厚度e满足：
    Figure PCTCN2018084473-appb-100003
    其中，λ为460～660nm，k为自然数。
  11. 根据权利要求10所述的液晶面板，其中，所述减反膜的折射率n满足：
    Figure PCTCN2018084473-appb-100004
  12. 根据权利要求10所述的液晶面板，其中，λ＝550nm，和/或，所述减反膜为SiO xN y、Al 2O 3或树脂类。
  13. 一种液晶面板的制作方法，其中，包括：
    提供一玻璃基板，并在所述玻璃基板表面制作减反膜；
    在所述减反膜表面沉积一层透明电极层；
    在所述透明电极层表面用光刻工艺制作黑色矩阵，所述黑色矩阵位于液晶面板的非显示区；
    在所述黑色矩阵表面光刻形成隔垫柱；
    提供一阵列基板，将所述阵列基板与所述玻璃基板组立，并在所述阵列基板与所述玻璃基板之间填充液晶。
  14. 根据权利要求13所述的液晶面板的制作方法，其中，所述减反膜的厚度e满足：
    Figure PCTCN2018084473-appb-100005
    其中，n为所述减反膜的折射率，λ为460～660nm，k为自然数。
  15. 根据权利要求14所述的液晶面板的制作方法，其中，所述减反膜的折射率n满足：
    Figure PCTCN2018084473-appb-100006
  16. 根据权利要求14所述的液晶面板的制作方法，其中，λ＝550nm，和/或，所述减反膜为SiO xN y、Al 2O 3或树脂类。
  17. 根据权利要求13所述的液晶面板的制作方法，其中，所述黑色矩阵与所述隔垫柱采用相同的光阻材料制成，用光刻工艺制作黑色矩阵的步骤和光刻形成隔垫柱的步骤为一个制程实现。
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