WO2017101204A1 - 液晶显示装置 - Google Patents

液晶显示装置 Download PDF

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Publication number
WO2017101204A1
WO2017101204A1 PCT/CN2016/072775 CN2016072775W WO2017101204A1 WO 2017101204 A1 WO2017101204 A1 WO 2017101204A1 CN 2016072775 W CN2016072775 W CN 2016072775W WO 2017101204 A1 WO2017101204 A1 WO 2017101204A1
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WIPO (PCT)
Prior art keywords
layer
substrate
disposed
liquid crystal
insulating layer
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2016/072775
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English (en)
French (fr)
Inventor
李亚锋
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US14/914,653 priority Critical patent/US20180031877A1/en
Publication of WO2017101204A1 publication Critical patent/WO2017101204A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
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    • 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 
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    • 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 
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    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
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    • G—PHYSICS
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    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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    • 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
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    • G—PHYSICS
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Definitions

  • the present invention relates to the field of display technologies, and in particular, to a liquid crystal display device.
  • Liquid crystal display has many advantages such as thin body, power saving, no radiation, etc., and is widely used, such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or laptops. Screen, etc.
  • liquid crystal display devices which include a casing, a liquid crystal panel disposed in the casing, and a backlight module disposed in the casing.
  • the structure of the conventional liquid crystal panel is composed of a color filter substrate, a thin film transistor array substrate (TFT Array Substrate), and a liquid crystal layer (Liquid Crystal Layer) disposed between the two substrates.
  • TFT Array Substrate thin film transistor array substrate
  • Liquid Crystal Layer Liquid Crystal Layer
  • LTPS Low Temperature Poly-silicon
  • a-Si amorphous silicon
  • the W/L the ratio of the channel width W to the channel length L
  • the aperture ratio corresponding to the pixel is relatively It is relatively high and has great market competitive advantages.
  • FIG. 1 is a schematic diagram of a conventional liquid crystal display device including a liquid crystal panel 100 and a backlight module 200 disposed under the liquid crystal panel 100 .
  • the liquid crystal panel 100 includes a CF substrate 110, a TFT substrate 120 disposed opposite to the CF substrate 110, a liquid crystal layer 130 between the CF substrate 110 and the TFT substrate 120, and a bonding of the CF substrate 110 and the TFT.
  • the sealant 140 of the substrate 120 includes a CF substrate 110, a TFT substrate 120 disposed opposite to the CF substrate 110, a liquid crystal layer 130 between the CF substrate 110 and the TFT substrate 120, and a bonding of the CF substrate 110 and the TFT.
  • the sealant 140 of the substrate 120 includes a CF substrate 110, a TFT substrate 120 disposed opposite to the CF substrate 110, a liquid crystal layer 130 between the CF substrate 110 and the TFT substrate 120, and a bonding of the CF substrate 110 and the TFT.
  • FIG. 2 is a cross-sectional structural view of a liquid crystal panel 100 of the liquid crystal display device of FIG. 1, wherein the CF substrate 110 includes a first substrate substrate 400, a black matrix 220 and colors disposed on the first substrate substrate 400.
  • the TFT substrate 120 includes a second substrate 210, a light-shielding metal layer 390 disposed on the second substrate 210, and a first substrate disposed on the second substrate 210 and the light-shielding metal layer 390.
  • the edge layer 230, the polysilicon layer 240 disposed on the first insulating layer 230, the second insulating layer 250 disposed on the first insulating layer 230 and the polysilicon layer 240, and the second insulating layer 250 are disposed on the second insulating layer 250.
  • a black matrix 220 is formed on the CF substrate 110 side to block the light. Further, in the black matrix 220, when the light is prevented from entering from the CF substrate 110 side, the metal (mainly the source/drain 280) on the TFT substrate 120 side is reflected by the light, and the contrast of the panel is lowered.
  • the conventional liquid crystal display device passes through the CF.
  • the substrate 110 and the TFT substrate 120 are formed in combination, and the alignment accuracy of the black matrix 220 on the CF substrate 110 side and the metal layer on the TFT substrate 120 side is considered.
  • the present invention provides a liquid crystal display device including a liquid crystal panel and a backlight module disposed under the liquid crystal panel;
  • the liquid crystal panel includes a first substrate, a second substrate disposed opposite the first substrate, a liquid crystal layer between the first substrate and the second substrate, and bonding the first substrate and the second substrate Frame glue
  • the second substrate includes a base substrate, a light shielding metal layer disposed on the base substrate, a first insulating layer disposed on the base substrate and the light shielding metal layer, and disposed on the first insulating layer a TFT layer, a first passivation layer disposed on the TFT layer, a color resist layer disposed on the first passivation layer, a first flat layer disposed on the color resist layer, and a photoresist spacer on the first planar layer.
  • the TFT layer includes a polysilicon layer disposed on the first insulating layer, a second insulating layer disposed on the polysilicon layer and the first insulating layer, and a gate disposed on the second insulating layer Yusho a second insulating layer and a third insulating layer on the gate, a source/drain provided on the third insulating layer, a second planar layer disposed on the third insulating layer and the source/drain, a common electrode layer disposed on the second planar layer, a second passivation layer disposed on the second planar layer and the common electrode layer, and a pixel electrode layer disposed on the second passivation layer; A via hole is disposed on the second planar layer and the second passivation layer corresponding to the source/drain, and the pixel electrode layer is in contact with the source/drain via the via.
  • the material of the light shielding metal layer is chromium.
  • the first substrate and the base substrate are glass substrates.
  • the backlight module is disposed on a side of the first substrate adjacent to the liquid crystal panel.
  • the color resist layer includes a plurality of red color blocking blocks, a plurality of green color blocking blocks, and a plurality of blue color blocking blocks disposed at intervals; the light shielding metal layer completely covers the adjacent color resist layers in a horizontal direction The spacing area of the two-color block.
  • the first insulating layer, the second insulating layer, and the third insulating layer are a composite structure of a silicon nitride layer, a silicon oxide layer, or both; and the material of the common electrode layer and the pixel electrode layer is indium tin oxide.
  • the photoresist spacer includes a main photoresist spacer and a auxiliary photoresist spacer; the main photoresist spacer is in contact with the first substrate; the auxiliary photoresist spacer and the first substrate There is a gap between them.
  • the TFT layer further includes a data line disposed on the third insulating layer.
  • the light shielding metal layer completely covers the polysilicon layer, the gate, and the source/drain in the horizontal direction.
  • the present invention also provides a liquid crystal display device including a liquid crystal panel and a backlight module disposed under the liquid crystal panel;
  • the liquid crystal panel includes a first substrate, a second substrate disposed opposite the first substrate, a liquid crystal layer between the first substrate and the second substrate, and bonding the first substrate and the second substrate Frame glue
  • the second substrate includes a base substrate, a light shielding metal layer disposed on the base substrate, a first insulating layer disposed on the base substrate and the light shielding metal layer, and disposed on the first insulating layer a TFT layer, a first passivation layer disposed on the TFT layer, a color resist layer disposed on the first passivation layer, a first flat layer disposed on the color resist layer, and a photoresist spacer on the first planar layer;
  • the TFT layer includes a polysilicon layer disposed on the first insulating layer, a second insulating layer disposed on the polysilicon layer and the first insulating layer, and a gate disposed on the second insulating layer a third insulating layer disposed on the second insulating layer and the gate, a source/drain provided on the third insulating layer, and a third electrode disposed on the third insulating layer and the source/drain a second flat layer disposed on the second flat a common electrode layer on the layer, a second passivation layer disposed on the second planar layer and the common electrode layer, and a pixel electrode layer disposed on the second passivation layer; the second flat layer and a via hole is disposed on the second passivation layer corresponding to the source/drain, and the pixel electrode layer is in contact with the source/drain via the via hole;
  • the material of the light shielding metal layer is chromium
  • first substrate and the substrate are glass substrates
  • the backlight module is disposed on a side of the first substrate adjacent to the liquid crystal panel;
  • the color resist layer comprises a plurality of red color blocking blocks, a plurality of green color blocking blocks, and a plurality of blue color blocking blocks disposed at intervals; the light shielding metal layer completely covers the color resist layer in a horizontal direction The spacing area of adjacent two-color block.
  • the liquid crystal display device of the present invention has a color resist layer, a photoresist spacer, and a TFT layer disposed on the second substrate of the liquid crystal panel, so that the layers on the second substrate can be fabricated.
  • the mark reserved on the reticle is directly aligned with the previous layer, so that the offset between the layers is small, and the alignment accuracy is high; at the same time, since the backlight module is disposed near the liquid crystal panel One side of the substrate, and the second substrate adopts a top gate structure, so that when the light source of the backlight module is incident from the first substrate side to the liquid crystal panel, the gate can cover the channel region of the polysilicon layer,
  • the leakage current of the second substrate plays a large improvement role, avoiding the problem of leakage current due to illumination;
  • the light shielding metal layer of the bottom layer of the second substrate side is made of ferrous metal such as chrome, when the external light is from the first When the two substrate sides are incident, since the light shielding metal layer is at the bottom layer, the problem
  • FIG. 1 is a schematic cross-sectional structural view of a conventional liquid crystal display device
  • FIG. 2 is a cross-sectional structural view of a liquid crystal panel of the liquid crystal display device of FIG. 1;
  • FIG. 3 is a schematic cross-sectional structural view of a liquid crystal display device of the present invention.
  • FIG. 4 is a cross-sectional structural view of a liquid crystal panel of the liquid crystal display device of FIG. 3 at a TFT;
  • FIG. 5 is a cross-sectional structural view of a liquid crystal panel of the liquid crystal display device of FIG. 3 at a data line.
  • the present invention provides a liquid crystal display device including a liquid crystal panel 1 and a backlight module 2 disposed under the liquid crystal panel 1 .
  • the liquid crystal panel 1 includes a first substrate 11, a second substrate 12 disposed opposite the first substrate 11, and a liquid crystal layer 13 between the first substrate 11 and the second substrate 12. And bonding the sealant 14 of the first substrate 11 and the second substrate 12.
  • the second substrate 12 includes a base substrate 21 , a light shielding metal layer 22 disposed on the base substrate 21 , and a first surface disposed on the base substrate 21 and the light shielding metal layer 22 .
  • An insulating layer 23 a TFT layer 20 disposed on the first insulating layer 23, a first passivation layer 33 disposed on the TFT layer 20, and a color resist layer disposed on the first passivation layer 33.
  • a first planar layer 35 disposed on the color resist layer 34 and a photoresist spacer 39 disposed on the first planar layer 35.
  • the layers on the second substrate 12 can be reserved through the mask when being fabricated.
  • the mark and the previous layer are directly aligned, so that the offset between the layers is small, the alignment accuracy is high, and the accuracy is ⁇ 0.6 ⁇ m.
  • the first substrate 11 and the base substrate 21 are glass substrates.
  • the backlight module 2 is disposed on a side of the first substrate 11 of the liquid crystal panel 1 .
  • the color resist layer 34 includes a plurality of red color block blocks, a plurality of green color block blocks, and a plurality of blue color block blocks.
  • the light-shielding metal layer 22 completely covers the interval regions of the adjacent two-color blocking blocks on the color resist layer 34 in the horizontal direction, thereby preventing the pixels from leaking light instead of the black matrix.
  • the TFT layer 20 includes a polysilicon layer 24 disposed on the first insulating layer 23, a second insulating layer 25 disposed on the polysilicon layer 24 and the first insulating layer 23, and is disposed on the first layer a gate electrode 26 on the second insulating layer 25, a third insulating layer 27 disposed on the second insulating layer 25 and the gate electrode 26, and a source/drain terminal 28 disposed on the third insulating layer 27,
  • the backlight module 2 is disposed on a side of the first substrate 11 adjacent to the liquid crystal panel 1 , and the second substrate 12 is configured in a top gate structure, so that the light source of the backlight module 2 is from the side of the first substrate 11 .
  • the gate electrode 26 can cover the channel region of the polysilicon layer 24, thereby greatly improving the leakage current of the second substrate 12, and avoiding the problem of leakage current due to illumination. .
  • the light shielding metal layer 22 completely covers the polysilicon layer 24, the gate electrode 26, and the source/drain electrodes 28 in the horizontal direction, so that when external light is incident from the bottom surface of the second substrate 12, the light shielding metal The layer 22 is at the bottommost layer of the second substrate 12 so that the light can be shielded from the leakage of the TFT device of the second substrate 12 due to back channel illumination.
  • the light shielding metal layer 22 is disposed on the bottommost layer of the second substrate 12, and also prevents external light from being reflected from the bottom surface of the second substrate 12, causing light reflection at the metal layer such as the source/drain electrodes 28, Causes a problem of reduced panel contrast.
  • the light shielding metal layer 22 is made of ferrous metal.
  • the material of the light shielding metal layer 22 is chromium.
  • the first insulating layer 23, the second insulating layer 25, and the third insulating layer 27 are a composite structure of a silicon nitride layer, a silicon oxide layer, or both.
  • the photoresist spacer 39 includes a main photoresist spacer 37 and a secondary photoresist spacer 36; the main photoresist spacer 37 is in contact with the first substrate 11; the auxiliary photoresist gap There is a gap between the object 36 and the first substrate 11.
  • the TFT layer 20 further includes a data line 38 disposed on the third insulating layer 27.
  • the material of the common electrode layer 30 and the pixel electrode layer 32 is indium tin oxide.
  • the color resist layer, the photoresist spacer, and the TFT layer are disposed on the second substrate of the liquid crystal panel, so that the layers on the second substrate can pass through during fabrication.
  • the mark reserved on the mask is directly aligned with the previous layer, so that the offset between the layers is small, and the alignment accuracy is high; and at the same time, the backlight module is disposed on the first substrate near the liquid crystal panel.
  • the second substrate adopts a top gate structure, so that when the light source of the backlight module is incident from the first substrate side to the liquid crystal panel, the gate can cover the channel region of the polysilicon layer.
  • the leakage current of the two substrates plays a greater improvement role, avoiding the problem of leakage current due to illumination;
  • the light shielding metal layer of the bottom layer of the second substrate side is made of ferrous metal such as chrome, when the external light is from the second When the substrate side is incident, since the light shielding metal layer is at the bottom layer, the problem that the metal reflection causes the panel contrast due to the incidence of light from the second substrate can be prevented; the structure is simple, and the black matrix can be omitted compared with the prior art. Production, and has a high accuracy and the opening ratio of the group.

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Abstract

一种液晶显示装置，将色阻层(34)、光阻间隙物(39)、及TFT层(20)一同设于液晶面板(1)的第二基板(12)上，使得第二基板(12)上各层之间的偏移量较小，对位精度较高；同时，由于背光模组(2)设于靠近所述液晶面板(1)的第一基板(11)的一侧，所述第二基板(12)采用顶栅型结构，从而使得当背光模组(2)的光源从第一基板(11)侧入射至液晶面板(1)时，栅极(26)可以对多晶硅层(24)的沟道区进行遮盖，对第二基板(12)的漏电流起到较大的改善作用；此外，第二基板(12)侧底层的遮光金属层(22)采用黑色金属制成，当外界光从第二基板(12)侧入射时，由于遮光金属层(22)在最底层，从而可防止因光从第二基板(12)入射而造成金属反射引起液晶面板(1)对比度下降的问题；结构简单，与现有技术相比可省去黑色矩阵(220)的制作。

Description

液晶显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种液晶显示装置。
背景技术
液晶显示装置(Liquid Crystal Display，LCD)具有机身薄、省电、无辐射等众多优点，得到了广泛的应用，如：移动电话、个人数字助理(PDA)、数字相机、计算机屏幕或笔记本电脑屏幕等。
现有市场上的液晶显示装置大部分为背光型液晶显示装置，其包括壳体、设于壳体内的液晶面板及设于壳体内的背光模组(Backlight module)。传统的液晶面板的结构是由一彩色滤光片基板(Color Filter Substrate)、一薄膜晶体管阵列基板(Thin Film Transistor Array Substrate，TFT Array Substrate)以及一配置于两基板间的液晶层(Liquid Crystal Layer)所构成，其工作原理是通过在两片玻璃基板上施加驱动电压来控制液晶层的液晶分子的旋转，将背光模组的光线折射出来产生画面。
低温多晶硅(Low Temperature Poly-silicon，LTPS)技术是新一代TFT基板的制造技术，与传统非晶硅(a-Si)技术的最大差异在于，低温多晶硅显示器反应速度较快，且有高亮度、高解析度与低耗电量等优点。由于LTPS具有高迁移率的优点，那么在进行像素设计时TFT基板开关的W/L(沟道宽度W与沟道长度L之比)就可以设计的很小，这样以来像素对应的开口率相对就比较高，具有极大的市场竞争优势。
请参阅图1，为一种现有液晶显示装置的示意图，该液晶显示装置包括液晶面板100、及设于所述液晶面板100下方的背光模组200。所述液晶面板100包括CF基板110、与所述CF基板110相对设置的TFT基板120、位于所述CF基板110与TFT基板120之间的液晶层130、及粘结所述CF基板110与TFT基板120的框胶140。
图2为图1中的液晶显示装置的液晶面板100的剖面结构示意图，其中所述CF基板110包括第一衬底基板400、设于所述第一衬底基板400上的黑色矩阵220和色阻层340、设于所述色阻层340上的第一平坦层350、及设于所述第一平坦层350上的主光阻间隙物370与辅光阻间隙物360。所述TFT基板120包括第二衬底基板210、设于所述第二衬底基板210上的遮光金属层390、设于所述第二衬底基板210与遮光金属层390上的第一绝 缘层230、设于所述第一绝缘层230上的多晶硅层240、设于所述第一绝缘层230与多晶硅层240上的第二绝缘层250、设于所述第二绝缘层250上的栅极260、设于所述第二绝缘层250与栅极260上的第三绝缘层270、设于所述第三绝缘层270上的源/漏极280、设于所述第三绝缘层270与源/漏极280上的第二平坦层290、设于所述第二平坦层290上的公共电极层300、设于所述公共电极层300上的钝化层310、设于所述钝化层310上的像素电极层320；所述钝化层310与第二平坦层290上对应源/漏极280上方设有过孔500，所述像素电极层320经由所述过孔500与所述源/漏极280相接触。
在上述现有的液晶显示装置中，为防止像素边缘漏光，在CF基板110侧制作有黑色矩阵220进行遮挡。另外黑色矩阵220还有防止光从CF基板110侧入射时，TFT基板120侧的金属(主要是源/漏极280)反光造成面板的对比度下降的问题；且上述现有的液晶显示装置通过CF基板110和TFT基板120组合而形成，这样就要考虑到CF基板110侧的黑色矩阵220和TFT基板120侧的金属层的对组精度。在目前的制程能力下，无法做到完全无偏差，有时偏差会达到±5μm，这样实际制作出的液晶面板的开口率和设计值就会存在极大的差异，同时同一批次的液晶面板之间的开口率差值也会比较大，影响品质。
发明内容
本发明的目的在于提供一种液晶显示装置，具有较高的对组精度及开口率。
为实现上述目的，本发明提供一种液晶显示装置，包括液晶面板、及设于所述液晶面板下方的背光模组；
所述液晶面板包括第一基板、与所述第一基板相对设置的第二基板、位于所述第一基板与第二基板之间的液晶层、及粘结所述第一基板与第二基板的框胶；
所述第二基板包括衬底基板、设于所述衬底基板上的遮光金属层、设于所述衬底基板与遮光金属层上的第一绝缘层、设于所述第一绝缘层上的TFT层、设于所述TFT层上的第一钝化层、设于所述第一钝化层上的色阻层、设于所述色阻层上的第一平坦层、及设于所述第一平坦层上的光阻间隙物。
所述TFT层包括设于所述第一绝缘层上的多晶硅层、设于所述多晶硅层与第一绝缘层上的第二绝缘层、设于所述第二绝缘层上的栅极、设于所 述第二绝缘层与栅极上的第三绝缘层、设于所述第三绝缘层上的源/漏极、设于所述第三绝缘层与源/漏极上的第二平坦层、设于所述第二平坦层上的公共电极层、设于所述第二平坦层与公共电极层上的第二钝化层、及设于所述第二钝化层上的像素电极层；所述第二平坦层与第二钝化层上对应所述源/漏极的上方设有过孔，所述像素电极层经由所述过孔与所述源/漏极相接触。
所述遮光金属层的材料为铬。
所述第一基板、衬底基板为玻璃基板。
所述背光模组设于靠近所述液晶面板的第一基板的一侧。
所述色阻层包括间隔设置的数个红色色阻块、数个绿色色阻块、及数个蓝色色阻块；所述遮光金属层在水平方向上完全遮盖所述色阻层上相邻的两色阻块的间隔区域。
所述第一绝缘层、第二绝缘层、第三绝缘层为氮化硅层、氧化硅层、或二者的复合结构；所述公共电极层、像素电极层的材料为氧化铟锡。
所述光阻间隙物包括主光阻间隙物、及辅光阻间隙物；所述主光阻间隙物与所述第一基板相接触；所述辅光阻间隙物与所述第一基板之间有间隙。
所述TFT层还包括设于所述第三绝缘层上的数据线。
所述遮光金属层在水平方向上完全遮盖所述多晶硅层、栅极、及源/漏极。
本发明还提供一种液晶显示装置，包括液晶面板、及设于所述液晶面板下方的背光模组；
所述液晶面板包括第一基板、与所述第一基板相对设置的第二基板、位于所述第一基板与第二基板之间的液晶层、及粘结所述第一基板与第二基板的框胶；
所述第二基板包括衬底基板、设于所述衬底基板上的遮光金属层、设于所述衬底基板与遮光金属层上的第一绝缘层、设于所述第一绝缘层上的TFT层、设于所述TFT层上的第一钝化层、设于所述第一钝化层上的色阻层、设于所述色阻层上的第一平坦层、及设于所述第一平坦层上的光阻间隙物；
其中，所述TFT层包括设于所述第一绝缘层上的多晶硅层、设于所述多晶硅层与第一绝缘层上的第二绝缘层、设于所述第二绝缘层上的栅极、设于所述第二绝缘层与栅极上的第三绝缘层、设于所述第三绝缘层上的源/漏极、设于所述第三绝缘层与源/漏极上的第二平坦层、设于所述第二平坦 层上的公共电极层、设于所述第二平坦层与公共电极层上的第二钝化层、及设于所述第二钝化层上的像素电极层；所述第二平坦层与第二钝化层上对应所述源/漏极的上方设有过孔，所述像素电极层经由所述过孔与所述源/漏极相接触；
其中，所述遮光金属层的材料为铬；
其中，所述第一基板、衬底基板为玻璃基板；
其中，所述背光模组设于靠近所述液晶面板的第一基板的一侧；
其中，所述色阻层包括间隔设置的数个红色色阻块、数个绿色色阻块、及数个蓝色色阻块；所述遮光金属层在水平方向上完全遮盖所述色阻层上相邻的两色阻块的间隔区域。
本发明的有益效果：本发明的液晶显示装置，将色阻层、光阻间隙物、及TFT层一同设于液晶面板的第二基板上，使得第二基板上的各层在进行制作时可通过光罩上预留的标记和前一层直接对位，从而各层之间的偏移量较小，对位精度较高；同时，由于背光模组设于靠近所述液晶面板的第一基板的一侧，同时所述第二基板采用顶栅型结构，从而使得当背光模组的光源从第一基板侧入射至液晶面板时，栅极可以对多晶硅层的沟道区进行遮盖，对第二基板的漏电流起到较大的改善作用，避免了由于光照而产生漏电流的问题；此外，第二基板侧底层的遮光金属层采用如铬等黑色金属制成，当外界光从第二基板侧入射时，由于遮光金属层在最底层，从而可防止因光从第二基板入射而造成金属反射引起面板对比度下降的问题；结构简单，与现有技术相比可省去黑色矩阵的制作，且具有较高的对组精度及开口率。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为一种现有的液晶显示装置的剖面结构示意图；
图2为图1中的液晶显示装置的液晶面板的剖面结构示意图；
图3为本发明的液晶显示装置的剖面结构示意图；
图4为图3中的液晶显示装置的液晶面板在TFT处的剖面结构示意图；
图5为图3中的液晶显示装置的液晶面板在数据线处的剖面结构示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图3至图5，本发明提供一种液晶显示装置，包括液晶面板1、及设于所述液晶面板1下方的背光模组2。
如图3所示，所述液晶面板1包括第一基板11、与所述第一基板11相对设置的第二基板12、位于所述第一基板11与第二基板12之间的液晶层13、及粘结所述第一基板11与第二基板12的框胶14。
如图4所示，所述第二基板12包括衬底基板21、设于所述衬底基板21上的遮光金属层22、设于所述衬底基板21与遮光金属层22上的第一绝缘层23、设于所述第一绝缘层23上的TFT层20、设于所述TFT层20上的第一钝化层33、设于所述第一钝化层33上的色阻层34、设于所述色阻层34上的第一平坦层35、及设于所述第一平坦层35上的光阻间隙物39。
由于色阻层34、光阻间隙物39、及TFT层20一同设于液晶面板1的第二基板12上，使得第二基板12上的各层在进行制作时可通过光罩上预留的标记和前一层直接对位，从而各层之间的偏移量较小，对位精度较高，精度会在±0.6μm。
具体的，所述第一基板11、衬底基板21为玻璃基板。
具体的，所述背光模组2设于靠近所述液晶面板1的第一基板11的一侧。
具体的，所述色阻层34包括间隔设置的数个红色色阻块、数个绿色色阻块、及数个蓝色色阻块。所述遮光金属层22在水平方向上完全遮盖所述色阻层34上相邻的两色阻块的间隔区域，从而代替黑色矩阵起到防止像素漏光的作用。
具体地，所述TFT层20包括设于所述第一绝缘层23上的多晶硅层24、设于所述多晶硅层24与第一绝缘层23上的第二绝缘层25、设于所述第二绝缘层25上的栅极26、设于所述第二绝缘层25与栅极26上的第三绝缘层27、设于所述第三绝缘层27上的源/漏极28、设于所述第三绝缘层27与源/漏极28上的第二平坦层29、设于所述第二平坦层29上的公共电极层30、设于所述第二平坦层29与公共电极层30上的第二钝化层31、及设于所述第二钝化层31上的像素电极层32；所述第二平坦层29与第二钝化层31上对应所述源/漏极28的上方设有过孔301，所述像素电极层32经由所述过孔301与所述源/漏极28相接触。
由于背光模组2设于靠近所述液晶面板1的第一基板11的一侧，且所述第二基板12采用顶栅型结构，从而使得当背光模组2的光源从第一基板11侧入射至液晶面板1时，所述栅极26可以对多晶硅层24的沟道区进行遮盖，对第二基板12的漏电流起到较大的改善作用，避免了由于光照而产生漏电流的问题。
具体的，所述遮光金属层22在水平方向上完全遮盖所述多晶硅层24、栅极26、及源/漏极28，从而使得当外界光线从第二基板12的底面入射时，由于遮光金属层22在第二基板12的最底层，从而可以对光线进行屏蔽，防止第二基板12的TFT器件因为背沟道照光而产生漏电流。
同时，将所述遮光金属层22设置在第二基板12的最底层，还可以防止外界光线从第二基板12的底面入射时，在所述源/漏极28等金属层处造成光线反射，引起面板对比度下降的问题。
具体的，所述遮光金属层22采用黑色金属制成，优选的，所述遮光金属层22的材料为铬。
具体的，所述第一绝缘层23、第二绝缘层25、第三绝缘层27为氮化硅层、氧化硅层、或二者的复合结构。
具体的，所述光阻间隙物39包括主光阻间隙物37、及辅光阻间隙物36；所述主光阻间隙物37与所述第一基板11相接触；所述辅光阻间隙物36与所述第一基板11之间有间隙。
具体的，如图5所示，所述TFT层20还包括设于所述第三绝缘层27上的数据线38。
具体的，所述公共电极层30、像素电极层32的材料为氧化铟锡。
综上所述，本发明的液晶显示装置，将色阻层、光阻间隙物、及TFT层一同设于液晶面板的第二基板上，使得第二基板上的各层在进行制作时可通过光罩上预留的标记和前一层直接对位，从而各层之间的偏移量较小，对位精度较高；同时，由于背光模组设于靠近所述液晶面板的第一基板的一侧，同时所述第二基板采用顶栅型结构，从而使得当背光模组的光源从第一基板侧入射至液晶面板时，栅极可以对多晶硅层的沟道区进行遮盖，对第二基板的漏电流起到较大的改善作用，避免了由于光照而产生漏电流的问题；此外，第二基板侧底层的遮光金属层采用如铬等黑色金属制成，当外界光从第二基板侧入射时，由于遮光金属层在最底层，从而可防止因光从第二基板入射而造成金属反射引起面板对比度下将的问题；结构简单，与现有技术相比可省去黑色矩阵的制作，且具有较高的对组精度及开口率。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明后附的权利要求的保护范围。

Claims (15)

  1. 一种液晶显示装置，包括液晶面板、及设于所述液晶面板下方的背光模组；
    所述液晶面板包括第一基板、与所述第一基板相对设置的第二基板、位于所述第一基板与第二基板之间的液晶层、及粘结所述第一基板与第二基板的框胶；
    所述第二基板包括衬底基板、设于所述衬底基板上的遮光金属层、设于所述衬底基板与遮光金属层上的第一绝缘层、设于所述第一绝缘层上的TFT层、设于所述TFT层上的第一钝化层、设于所述第一钝化层上的色阻层、设于所述色阻层上的第一平坦层、及设于所述第一平坦层上的光阻间隙物。
  2. 如权利要求1所述的液晶显示装置，其中，所述TFT层包括设于所述第一绝缘层上的多晶硅层、设于所述多晶硅层与第一绝缘层上的第二绝缘层、设于所述第二绝缘层上的栅极、设于所述第二绝缘层与栅极上的第三绝缘层、设于所述第三绝缘层上的源/漏极、设于所述第三绝缘层与源/漏极上的第二平坦层、设于所述第二平坦层上的公共电极层、设于所述第二平坦层与公共电极层上的第二钝化层、及设于所述第二钝化层上的像素电极层；所述第二平坦层与第二钝化层上对应所述源/漏极的上方设有过孔，所述像素电极层经由所述过孔与所述源/漏极相接触。
  3. 如权利要求1所述的液晶显示装置，其中，所述遮光金属层的材料为铬。
  4. 如权利要求1所述的液晶显示装置，其中，所述第一基板、衬底基板为玻璃基板。
  5. 如权利要求1所述的液晶显示装置，其中，所述背光模组设于靠近所述液晶面板的第一基板的一侧。
  6. 如权利要求1所述的液晶显示装置，其中，所述色阻层包括间隔设置的数个红色色阻块、数个绿色色阻块、及数个蓝色色阻块；所述遮光金属层在水平方向上完全遮盖所述色阻层上相邻的两色阻块的间隔区域。
  7. 如权利要求2所述的液晶显示装置，其中，所述第一绝缘层、第二绝缘层、第三绝缘层为氮化硅层、氧化硅层、或二者的复合结构；所述公共电极层、像素电极层的材料为氧化铟锡。
  8. 如权利要求2所述的液晶显示装置，其中，所述光阻间隙物包括主 光阻间隙物、及辅光阻间隙物；所述主光阻间隙物与所述第一基板相接触；所述辅光阻间隙物与所述第一基板之间有间隙。
  9. 如权利要求2所述的液晶显示装置，其中，所述TFT层还包括设于所述第三绝缘层上的数据线。
  10. 如权利要求2所述的液晶显示装置，其中，所述遮光金属层在水平方向上完全遮盖所述多晶硅层、栅极、及源/漏极。
  11. 一种液晶显示装置，包括液晶面板、及设于所述液晶面板下方的背光模组；
    所述液晶面板包括第一基板、与所述第一基板相对设置的第二基板、位于所述第一基板与第二基板之间的液晶层、及粘结所述第一基板与第二基板的框胶；
    所述第二基板包括衬底基板、设于所述衬底基板上的遮光金属层、设于所述衬底基板与遮光金属层上的第一绝缘层、设于所述第一绝缘层上的TFT层、设于所述TFT层上的第一钝化层、设于所述第一钝化层上的色阻层、设于所述色阻层上的第一平坦层、及设于所述第一平坦层上的光阻间隙物；
    其中，所述TFT层包括设于所述第一绝缘层上的多晶硅层、设于所述多晶硅层与第一绝缘层上的第二绝缘层、设于所述第二绝缘层上的栅极、设于所述第二绝缘层与栅极上的第三绝缘层、设于所述第三绝缘层上的源/漏极、设于所述第三绝缘层与源/漏极上的第二平坦层、设于所述第二平坦层上的公共电极层、设于所述第二平坦层与公共电极层上的第二钝化层、及设于所述第二钝化层上的像素电极层；所述第二平坦层与第二钝化层上对应所述源/漏极的上方设有过孔，所述像素电极层经由所述过孔与所述源/漏极相接触；
    其中，所述遮光金属层的材料为铬；
    其中，所述第一基板、衬底基板为玻璃基板；
    其中，所述背光模组设于靠近所述液晶面板的第一基板的一侧；
    其中，所述色阻层包括间隔设置的数个红色色阻块、数个绿色色阻块、及数个蓝色色阻块；所述遮光金属层在水平方向上完全遮盖所述色阻层上相邻的两色阻块的间隔区域。
  12. 如权利要求11所述的液晶显示装置，其中，所述第一绝缘层、第二绝缘层、第三绝缘层为氮化硅层、氧化硅层、或二者的复合结构；所述公共电极层、像素电极层的材料为氧化铟锡。
  13. 如权利要求11所述的液晶显示装置，其中，所述光阻间隙物包括 主光阻间隙物、及辅光阻间隙物；所述主光阻间隙物与所述第一基板相接触；所述辅光阻间隙物与所述第一基板之间有间隙。
  14. 如权利要求11所述的液晶显示装置，其中，所述TFT层还包括设于所述第三绝缘层上的数据线。
  15. 如权利要求11所述的液晶显示装置，其中，所述遮光金属层在水平方向上完全遮盖所述多晶硅层、栅极、及源/漏极。
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