WO2017140000A1 - Va型coa液晶显示面板 - Google Patents

Va型coa液晶显示面板 Download PDF

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Publication number
WO2017140000A1
WO2017140000A1 PCT/CN2016/074622 CN2016074622W WO2017140000A1 WO 2017140000 A1 WO2017140000 A1 WO 2017140000A1 CN 2016074622 W CN2016074622 W CN 2016074622W WO 2017140000 A1 WO2017140000 A1 WO 2017140000A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
light shielding
substrate
liquid crystal
display panel
Prior art date
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
Application number
PCT/CN2016/074622
Other languages
English (en)
French (fr)
Inventor
于承忠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to KR1020187006539A priority Critical patent/KR102033263B1/ko
Priority to JP2018513844A priority patent/JP6542986B2/ja
Priority to US15/031,278 priority patent/US20180052347A1/en
Priority to GB1802026.3A priority patent/GB2557085B/en
Publication of WO2017140000A1 publication Critical patent/WO2017140000A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/136—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
    • G02F1/133509—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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133707—Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
    • G—PHYSICS
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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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    • G02F1/133—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
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    • G02F1/136209—Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
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    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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    • G02F1/133514—Colour filters
    • G—PHYSICS
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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
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    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
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    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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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
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • G02F2201/123—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode pixel

Definitions

  • the present invention relates to the field of liquid crystal display, and more particularly to a VA type COA liquid crystal display panel.
  • Liquid crystal display is one of the most widely used flat panel displays.
  • the liquid crystal panel is a core component of liquid crystal displays.
  • a conventional liquid crystal panel usually consists of a color filter (CF) substrate, a thin film transistor array substrate (TFT Array Substrate), and a liquid crystal layer (Liquid Crystal Layer) disposed between the two substrates.
  • the working principle is that liquid crystal molecules are placed in two parallel glass substrates, and there are many vertical and horizontal small wires between the two glass substrates, and the liquid crystal molecules are controlled to change direction by energization or not, and the backlight module is The light is refracted to produce a picture.
  • a thin film transistor (TFT) array is prepared on the thin film transistor array substrate for driving the rotation of the liquid crystal to control the display of each pixel, and the color filter substrate is provided with an RGB color filter layer for forming each pixel. color.
  • FIG. 1 is a schematic structural view of a conventional vertical alignment (VA) type COA liquid crystal display panel, wherein the color filter layer 11 is disposed on the TFT substrate 10, and the black matrix 21 and the spacer The object 22 is disposed on the CF substrate 20.
  • VA vertical alignment
  • the black matrix can be designed to have a narrow line width, which can increase the aperture ratio of the pixel.
  • the main function of the black matrix is to shield the light, prevent the gate control line and the data line from leaking light, and improve the contrast of the liquid crystal display panel to achieve a better display effect.
  • a BM-Less technology is proposed above the COA technology, that is, no black matrix layer is provided, but two types of red and blue are used above the gate control line and the data line.
  • the color resistance stacking method is used to shield the light.
  • This BM-Less technology is mainly used in the In-Plane Switching (IPS) display mode. Since the IPS mode is a horizontal electric field driving liquid crystal alignment method, the flatness of the plane where the electrodes are placed is very high, so In addition to RGB color photoresist, a layer of transparent photoresist is also covered on the color photoresist to improve flatness. Sex.
  • the flat layer is not covered on the color photoresist, and if it is on the gate control line.
  • the red and blue resistance stacking method is used for shading, and the gate control line is higher than the display pixel area by about one height of the color resist layer.
  • the columnar spacer is designed at the gate control line. The height of the mat will be shortened, and the too short column spacer will result in insufficient elastic compression, which will eventually lead to insufficient space for displaying the liquid crystal and affect the product yield.
  • the object of the present invention is to provide a VA type COA liquid crystal display panel, which can eliminate the black matrix on the upper substrate under the premise of ensuring the elastic compression amount of the spacer and the thickness of the liquid crystal cell, and the panel has high aperture ratio, simple process and cost. low.
  • the present invention firstly provides a VA type COA liquid crystal display panel comprising an upper substrate and a lower substrate disposed opposite to each other, a liquid crystal layer interposed between the upper and lower substrates, and a sealing bonding upper and lower The frame sealant of the substrate;
  • the lower substrate includes a TFT substrate, a first passivation layer disposed on the TFT substrate, a color filter layer disposed on the first passivation layer, a color light shielding layer, and a color filter layer disposed on the color filter layer And a second passivation layer on the color light shielding layer, and a pixel electrode, a common voltage signal line, and a common electrode disposed on the second passivation layer;
  • the TFT substrate includes a first base substrate, and a plurality of gate scan lines, a plurality of data lines, and a plurality of TFTs disposed on the first base substrate, the plurality of gate scan lines and the plurality of data lines a plurality of pixel-arranged pixel regions alternately interleaved with each other on the first substrate;
  • the color light shielding layer includes a first light shielding layer corresponding to the plurality of gate scanning lines and a second light shielding layer corresponding to the plurality of data lines;
  • the first light shielding layer is composed of a red color resist material or a blue color resist material
  • the second light shielding layer is formed by stacking two of a red color resist material, a green color resist material, and a blue color resist material;
  • the common electrode is located above the plurality of gate scan lines and is in communication with the common voltage signal line.
  • the upper substrate includes a second substrate, a common electrode layer disposed on the second substrate, and a plurality of black spacers and a black edge layer disposed on the common electrode layer;
  • the materials of the plurality of black spacers and the black edge seal layer are black elastic materials
  • the plurality of black spacers are correspondingly located above the plurality of gate scan lines and the plurality of data lines;
  • the black edge seal layer is correspondingly located above the sealant.
  • the black spacer includes a primary black spacer and an auxiliary black spacer.
  • the black spacer is a tapered columnar body.
  • the sealant is a conductive sealant, and comprises a conductive gold ball therein.
  • the common electrode layer communicates with a common voltage signal line on the lower substrate through a conductive gold ball in the sealant.
  • the second light shielding layer is formed by stacking a red color resist material and a blue color resist material.
  • the color filter layer includes a plurality of red, green, and blue filter units respectively located in a plurality of pixel regions, and the materials of the red, green, and blue filter units are red, green, and blue photoresists, respectively. material.
  • the colored light shielding layer is formed simultaneously with a portion of the same material in the color filter layer.
  • the plurality of TFTs are correspondingly located in a plurality of pixel regions, and the TFT includes a gate, a semiconductor layer, a source, and a drain;
  • the lower substrate further includes a gate insulating layer formed on the first substrate and the gates of the plurality of TFTs; the semiconductor layer is formed on the gate insulating layer, and the source and the drain are formed On the gate insulating layer and the semiconductor layer, the source and the drain are respectively in contact with both ends of the semiconductor layer;
  • a first via hole is further disposed above the drain of the first passivation layer and the second passivation layer, and the pixel electrode is in communication with the drain through the first via.
  • the plurality of gate scan lines and the gates of the plurality of TFTs are obtained by a patterning process of the same metal layer; the plurality of data lines and the source and drain of the plurality of TFTs are patterned by the same metal layer
  • the pixel electrode, the common electrode, and the common electrode are obtained by a patterning process of the same transparent conductive layer; the material of the transparent conductive layer is ITO.
  • the invention also provides a VA type COA liquid crystal display panel, comprising: an upper substrate and a lower substrate disposed oppositely, a liquid crystal layer sandwiched between the upper and lower substrates, and a sealant for sealing and bonding the upper and lower substrates ;
  • the lower substrate includes a TFT substrate, a first passivation layer disposed on the TFT substrate, a color filter layer disposed on the first passivation layer, a color light shielding layer, and a color filter layer disposed on the color filter layer And a second passivation layer on the color light shielding layer, and a pixel electrode, a common voltage signal line, and a common electrode disposed on the second passivation layer;
  • the TFT substrate includes a first base substrate, and a plurality of gate scan lines, a plurality of data lines, and a plurality of TFTs disposed on the first base substrate, the plurality of gate scan lines and the plurality of data lines a plurality of pixel-arranged pixel regions alternately interleaved with each other on the first substrate;
  • the color light shielding layer includes a first light shielding layer corresponding to the plurality of gate scanning lines and a second light shielding layer corresponding to the plurality of data lines;
  • the first light shielding layer is composed of a red color resist material or a blue color resist material
  • the second light shielding layer is formed by stacking two of a red color resist material, a green color resist material, and a blue color resist material;
  • the common electrode is located above the plurality of gate scan lines and is connected to the common voltage signal line;
  • the upper substrate includes a second substrate, a common electrode layer disposed on the second substrate, and a plurality of black spacers and a black edge layer disposed on the common electrode layer;
  • the materials of the plurality of black spacers and the black edge seal layer are black elastic materials
  • the plurality of black spacers are correspondingly located above the plurality of gate scan lines and the plurality of data lines;
  • the black edge seal layer is correspondingly located above the sealant
  • the black spacer comprises a main black spacer and an auxiliary black spacer
  • the black spacer is a tapered columnar body
  • the sealant is a conductive sealant, and comprises a conductive gold ball therein, wherein the common electrode layer communicates with a common voltage signal line on the lower substrate through a conductive gold ball in the sealant.
  • the invention provides a VA type COA liquid crystal display panel, corresponding to a first light shielding layer with a red or blue color resist material disposed above the gate scan line, and a common electrode above the first light shielding layer.
  • the common electrode communicates with the common electrode layer on the upper substrate by communicating with the common voltage signal line, so that the voltage difference between the upper and lower substrates at the gate scan line is 0, thereby causing the panel to be scanned at the gate because The liquid crystal is not driven by the voltage difference and does not rotate to exhibit a normally black state.
  • a second light shielding layer formed by stacking two of red, green, and blue color resist materials is disposed above the corresponding data line; that is, by covering the first light shielding layer
  • the short circuit between the layer and the common electrode of the common electrode and the common electrode layer of the upper substrate realizes light shielding of the gate scanning line, preventing light leakage at the gate scanning line, and stacking the two color resist materials over the data line
  • the second light shielding layer realizes light shielding of the data line, prevents light leakage at the data line, and since the gate scan line is covered only with the first light shielding layer of a single layer of color resist material, thereby Can lead to shortened spacer thickness, therefore, to ensure the elastic compression of the spacer thickness and the panel case premise, eliminating the need for the black matrix on the upper substrate, the panel opening rate, simple process, low production cost.
  • FIG. 1 is a schematic structural view of a conventional VA type COA liquid crystal display panel
  • FIG. 2 is a schematic structural view of a VA type COA liquid crystal display panel of the present invention.
  • FIG. 3 is a plan view of a lower substrate corresponding to a pixel region of a VA type COA liquid crystal display panel of the present invention
  • FIG. 4 is a cross-sectional view of a VA type COA liquid crystal display panel of the present invention at a gate scan line.
  • the present invention provides a VA type COA liquid crystal display panel, including an upper substrate 200 and a lower substrate 100 disposed opposite to each other, a liquid crystal layer 300 interposed between the upper and lower substrates 200 and 100, and Sealing and bonding the upper and lower substrates 200, 100 of the sealant 400;
  • the lower substrate 100 includes a TFT substrate 100 ′, a first passivation layer 150 disposed on the TFT substrate 100 ′, a color filter layer 160 disposed on the first passivation layer 150 , and a color light shielding layer 170 .
  • a second passivation layer disposed on the color filter layer 160 and the color light shielding layer 170, and a pixel electrode 191 disposed on the second passivation layer, a common voltage signal line, and a common electrode 193;
  • the TFT substrate 100 ′ includes a first base substrate 110 , and a plurality of gate scan lines 120 , a plurality of data lines 130 , and a plurality of TFTs disposed on the first base substrate 110 , and the plurality of gate scans a plurality of arrayed pixel regions of the line 120 and the plurality of data lines 130 are insulated and interleaved on the first substrate 110;
  • the color light shielding layer 170 includes a first light shielding layer 171 corresponding to the plurality of gate lines 120 and a second light shielding layer 172 corresponding to the plurality of data lines 130;
  • the first light shielding layer 171 is composed of a red color resist material or a blue color resist material
  • the second light shielding layer 172 is formed by stacking two of a red color resist material, a green color resist material, and a blue color resist material;
  • the common electrode 193 is located above the plurality of gate scan lines 120 and is in communication with the common voltage signal line.
  • the upper substrate 200 includes a second substrate 210, a common electrode layer 220 disposed on the second substrate 210, and a plurality of black spacers disposed on the common electrode layer 220 (Black Photo Spacer , BPS) 230, a black edge banding layer 240; the material of the plurality of black spacers 230 and the black edge banding layer 240 are black elastic materials; the plurality of black spacers 230 are correspondingly located in the number The strip gate scan line 120 and the plurality of data lines 130 are above; the black edge seal layer 240 is correspondingly located above the sealant 400.
  • the black edge banding layer 240 is made of the same material, so that it can be simultaneously formed by the same process, wherein the black edge banding layer 240 can play a light blocking effect on the frame of the liquid crystal panel.
  • the thickness of the black spacer 230 is not affected, thereby ensuring the elastic compression amount of the black spacer 230 and The panel box is thick.
  • the black spacer 230 includes a main black spacer 231 and an auxiliary black spacer 232; the black spacer 230 is a tapered column.
  • the sealant 400 is a conductive sealant, and comprises a conductive gold ball therein.
  • the common electrode layer 220 is connected to a common voltage signal line on the lower substrate 200 through a conductive gold ball in the sealant 400. .
  • the common electrode 193 is located above the plurality of gate scan lines 130 and communicates with the common voltage signal line, the common electrode layer 220 on the upper substrate is The common voltage signal lines are connected, so that the common electrode 193 is in communication with the common electrode layer 220, so that the voltage difference between the two is 0, then the liquid crystal in the liquid crystal display panel above the plurality of gate scan lines 120 is No rotation is driven, that is, the liquid crystal display panel is in a normally black state; the first light shielding layer 171 disposed above the plurality of gate scanning lines 120 is combined, so that several gates of the display panel can be Effectively shielding light at the polar scan line 120; in addition, the second light shielding layer 172 formed by stacking two color resist materials disposed above the plurality of data lines 130 can be on the plurality of data lines 130 of the display panel Effective shading is performed; further, it is possible to effectively prevent color mixture between pixel regions of the liquid crystal display panel without providing a black matrix.
  • the color filter layer 160 includes a plurality of red, green, and blue filter units 161, 162, and 163 respectively located in a plurality of pixel regions, and the red, green, and blue filter units 161,
  • the materials of 162 and 163 are red, green and blue photoresist materials, respectively.
  • the color filter layer 160 may further include a white filter unit and a transparent filter unit.
  • the plurality of TFTs are correspondingly located in a plurality of pixel regions, and the TFT includes a gate electrode 141, a semiconductor layer 142, a source electrode 143, and a drain electrode 144;
  • the lower substrate further includes a gate insulating layer 149 formed on the first substrate 110 and the gates 141 in the plurality of TFTs; the semiconductor layer 142 is formed on the gate insulating layer 149, the source A gate 143 and a drain 144 are formed on the gate insulating layer 149 and the semiconductor layer 142, and the source 143 and the drain 144 are respectively in contact with both ends of the semiconductor layer 142;
  • the first passivation layer 150 and the second passivation layer are further provided with a via hole above the drain electrode 144, and the pixel electrode 191 communicates with the drain electrode 144 through the via hole.
  • the plurality of gate scan lines 120 and the gates 141 of the plurality of TFTs are made of the same metal.
  • the layer is obtained after the patterning process; the plurality of data lines 130 and the source 143 and the drain 144 of the plurality of TFTs are obtained by a patterning process of the same metal layer; the pixel electrode 191, the common voltage signal line, and the common
  • the electrode 193 is obtained by a patterning process of the same transparent conductive layer; the material of the transparent conductive layer is ITO.
  • the second light shielding layer 172 is stacked by the red color resist material and the blue color resist material. to make.
  • the colored light shielding layer 170 is formed simultaneously with a portion of the same material in the color filter layer 160.
  • the first light shielding layer 171 is composed of a red color resist material; the second light shielding layer 172 is made of a red color resist material and a blue color resist.
  • the material is stacked; then, the red light shielding unit 161 of the color filter layer 160 is formed, and the first light shielding layer 171 is formed above the corresponding plurality of gate scanning lines 120 between the respective pixel regions.
  • a portion of the red color resist material in the second light shielding layer 172 is formed above the data line 130; while the blue color filter unit 163 of the color filter layer 160 is formed, a plurality of data lines are also required between the respective pixel regions.
  • a portion of the blue color resist material in the second light shielding layer 172 is formed above the 130.
  • the first light shielding layer 171 is composed of a blue color resist material; the second light shielding layer 172 is made of a red color resist material and a blue color.
  • the barrier material is stacked; then, while forming the blue filter unit 163 of the color filter layer 160, the first light shielding layer 171 is formed above the corresponding plurality of gate scan lines 120 between the respective pixel regions. A portion of the blue color resist material in the second light shielding layer 172 is formed above the plurality of data lines 130; and the red filter unit 161 of the color filter layer 160 is formed, and a plurality of pixels are also required between the respective pixel regions. A portion of the red color resist material in the second light shielding layer 172 is formed over the data line 130.
  • the color light-shielding layer 171 can be fabricated simultaneously with the color filter layer 160 without increasing the manufacturing process, compared to the conventional liquid crystal display panel which is shielded by a black matrix.
  • the black matrix material and the black matrix process are eliminated, which saves production costs and shortens the production cycle.
  • the VA type COA liquid crystal display panel corresponds to a first light shielding layer with a red or blue color resist material disposed above the gate scan line and a common electrode above the first light shielding layer, the common electrode Communicating with the common electrode layer on the upper substrate by communicating with the common voltage signal line, so that the voltage difference between the upper and lower substrates at the gate scan line is 0, thereby causing the panel to be scanned at the gate because the liquid crystal is not received
  • the voltage difference drive does not rotate and assumes a normally black state.
  • a second light shielding layer formed by stacking two of red, green, and blue color resist materials is disposed above the corresponding data line; that is, by covering the first light shielding layer and common Common electrode of electrode and upper substrate
  • the short circuit between the layers realizes the light shielding of the gate scanning lines, preventing light leakage at the gate scanning lines, and shielding the data lines by covering the second light shielding layer formed by stacking two color resist materials over the data lines.
  • the black matrix on the upper substrate is omitted, the panel has high aperture ratio, simple process and low production cost.

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Abstract

一种VA型COA液晶显示面板，对应栅极扫描线（120）上方设置有红色或蓝色色阻材料的第一遮光层（171）、及第一遮光层（171）上方的共通电极（193），共通电极（193）与上基板（200）上的公共电极层（220）电性连通，从而使得上基板（200）与下基板（100）在栅极扫描线（120）处的电压差为0，进而使得面板在栅极扫描线（120）处因为液晶没有受到电压差驱动不旋转而呈现常黑态，从而实现了对栅极扫描线（120）的遮光；另外，对应数据线（130）上方设置有由红色、绿色、蓝色色阻材料中的两种堆叠而成的第二遮光层（172），从而实现了对数据线（172）的遮光；进而在保证了隔垫物（230）弹性压缩量和面板盒厚的前提下，省去了上基板（200）上的黑色矩阵，面板开口率高、制程简单、生产成本低。

Description

VA型COA液晶显示面板 技术领域
本发明涉及液晶显示领域，尤其涉及一种VA型COA液晶显示面板。
背景技术
液晶显示器(Liquid Crystal Display，LCD)是目前最广泛使用的平板显示器之一，液晶面板是液晶显示器的核心组成部分。
传统的液晶面板通常是由一彩色滤光片(Color Filter，CF)基板、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，其工作原理是在两片平行的玻璃基板当中放置液晶分子，两片玻璃基板中间有许多垂直和水平的细小电线，通过通电与否来控制液晶分子改变方向，将背光模组的光线折射出来产生画面。其中薄膜晶体管阵列基板上制备薄膜晶体管(TFT)阵列，用于驱动液晶的旋转，控制每个像素的显示，而彩色滤光片基板上设有RGB彩色滤光层，用于形成每个像素的色彩。
COA(Color Filter on Array)技术是将RGB彩色滤光层即R、G、B色阻直接制备在的阵列基板上的技术，而彩膜基板上只设有黑色矩阵(Black Matrix，BM)以及柱状隔垫物(Photo Spacer，PS)层。如图1所示，为现有的一种垂直配向(Vertical Alignment，VA)型COA液晶显示面板的结构示意图，其中，彩色滤光层11设置于TFT基板10上，而黑色矩阵21和隔垫物22设置于CF基板20上。
因为COA显示面板中RGB色阻制作在TFT阵列基板之上，不存在彩膜基板与阵列基板的对位问题，所以可以降低显示面板制备过程中对盒制程的难度，避免了对盒时的误差，因此黑色矩阵可以设计为窄线宽，可以提高像素的开口率。而黑色矩阵的主要就是起遮光作用，防止栅极控制线和数据线漏光，提高液晶显示面板的对比度，以达到较佳的显示效果。
为了更进一步提高液晶面板的开口率，目前在COA技术之上提出一种BM-Less技术，即不设置黑色矩阵层，而是在栅极控制线与数据线的上方采用红色和蓝色两种色阻堆叠的方式进行遮光。这种BM-Less技术主要用于平面转换(In-Plane Switching，IPS)显示模式中，由于IPS模式是水平电场驱动液晶的排列的方式，对电极所处平面的平坦性要求很高，故除了RGB彩色光阻外，一般还在彩色光阻上覆盖了一层透明光阻来提高平坦 性。而当BM-Less技术并不适用于垂直配向型的显示模式，对于VA型的液晶显示面板，一般为了降低成本不会再在彩色光阻上覆盖平坦层，这时如果在栅极控制线上采用红、蓝色阻堆叠方式进行遮光，栅极控制线处会较显示像素区域高出约一个色阻层的高度，为了保持面板一定厚度的盒厚，在栅极控制线处设计的柱状隔垫物的高度就会被缩短，而过短的柱状隔垫物则会导致其弹性压缩量不够，最后导致显示液晶的空间不够而影响产品良率。
发明内容
本发明的目的在于提供一种VA型COA液晶显示面板，在保证隔垫物弹性压缩量和液晶盒厚的前提下，省去了上基板上的黑色矩阵，面板开口率高、制程简单、成本低。
为实现上述目的，本发明首先提供一种VA型COA液晶显示面板，包括相对设置的上基板与下基板、夹设于上、下基板之间的液晶层、及用于密封粘结上、下基板的封框胶；
所述下基板包括TFT基板、设于所述TFT基板上的第一钝化层、设于所述第一钝化层上的彩色滤光层、彩色遮光层、设于所述彩色滤光层、及彩色遮光层上的第二钝化层、及设于第二钝化层上的像素电极、公共电压信号线、共通电极；
所述TFT基板包括第一衬底基板、及设于第一衬底基板上的数条栅极扫描线、数条数据线、数个TFT，所述数条栅极扫描线与数条数据线在所述第一衬底基板上相互绝缘交错划分出的多个阵列排布的像素区域；
所述彩色遮光层包括对应位于所述数条栅极扫描线上方的第一遮光层、及对应位于数条数据线上方的第二遮光层；
所述第一遮光层由红色色阻材料、或蓝色色阻材料所组成；
所述第二遮光层由红色色阻材料、绿色色阻材料、和蓝色色阻材料中的两种堆叠而成；
所述共通电极对应的位于所述数条栅极扫描线的上方，与所述公共电压信号线相连通。
所述上基板包括第二衬底基板、设于第二衬底基板上的公共电极层、及设于公共电极层上的数个黑色隔垫物、黑色封边层；
所述数个黑色隔垫物与黑色封边层的材料均为黑色的弹性材料；
所述数个黑色隔垫物相应的位于所述数条栅极扫描线、和数条数据线的上方；
所述黑色封边层相应的位于所述封框胶的上方。
所述黑色隔垫物包括主黑色隔垫物和辅助黑色隔垫物。
所述黑色隔垫物为锥形柱状体。
所述封框胶为导电封框胶，其内包含导电金球，所述公共电极层通过封框胶内的导电金球与下基板上的公共电压信号线相连通。
所述第二遮光层由红色色阻材料和蓝色色阻材料堆叠而成。
所述彩色滤光层包括分别对应位于数个像素区域内的数个红、绿、蓝色滤光单元，所述红、绿、蓝色滤光单元的材料分别为红、绿、蓝色光阻材料。
所述彩色遮光层与彩色滤光层中相同材料的部分同时形成。
所述数个TFT对应的位于数个像素区域内，所述TFT包括栅极、半导体层、源极、及漏极；
所述下基板还包括形成于第一衬底基板和数个TFT内的栅极上的栅极绝缘层；所述半导体层形成于所述栅极绝缘层上，所述源极和漏极形成于所述栅极绝缘层和所述半导体层上，所述源极和漏极分别与所述半导体层的两端相接触；
所述第一钝化层与第二钝化层对应所述漏极的上方还设有第一过孔，所述像素电极通过所述第一过孔与所述漏极相连通。
所述数条栅极扫描线与数个TFT的栅极由同一金属层经图案化制程后得到；所述数条数据线与数个TFT的源极和漏极由同一金属层经图案化制程后得到；所述像素电极、公共电极、共通电极由同一透明导电层经图案化制程后得到；所述透明导电层的材料为ITO。
本发明还提供一种VA型COA液晶显示面板，包括相对设置的上基板与下基板、夹设于上、下基板之间的液晶层、及用于密封粘结上、下基板的封框胶；
所述下基板包括TFT基板、设于所述TFT基板上的第一钝化层、设于所述第一钝化层上的彩色滤光层、彩色遮光层、设于所述彩色滤光层、及彩色遮光层上的第二钝化层、及设于第二钝化层上的像素电极、公共电压信号线、共通电极；
所述TFT基板包括第一衬底基板、及设于第一衬底基板上的数条栅极扫描线、数条数据线、数个TFT，所述数条栅极扫描线与数条数据线在所述第一衬底基板上相互绝缘交错划分出的多个阵列排布的像素区域；
所述彩色遮光层包括对应位于所述数条栅极扫描线上方的第一遮光层、及对应位于数条数据线上方的第二遮光层；
所述第一遮光层由红色色阻材料、或蓝色色阻材料所组成；
所述第二遮光层由红色色阻材料、绿色色阻材料、和蓝色色阻材料中的两种堆叠而成；
所述共通电极对应的位于所述数条栅极扫描线的上方，与所述公共电压信号线相连通；
其中，所述上基板包括第二衬底基板、设于第二衬底基板上的公共电极层、及设于公共电极层上的数个黑色隔垫物、黑色封边层；
所述数个黑色隔垫物与黑色封边层的材料均为黑色的弹性材料；
所述数个黑色隔垫物相应的位于所述数条栅极扫描线、和数条数据线的上方；
所述黑色封边层相应的位于所述封框胶的上方；
其中，所述黑色隔垫物包括主黑色隔垫物和辅助黑色隔垫物；
其中，所述黑色隔垫物为锥形柱状体；
其中，所述封框胶为导电封框胶，其内包含导电金球，所述公共电极层通过封框胶内的导电金球与下基板上的公共电压信号线相连通。
本发明的有益效果：本发明提供的一种VA型COA液晶显示面板，对应栅极扫描线上方设置有红色或蓝色色阻材料的第一遮光层、及第一遮光层上方的共通电极，所述共通电极通过与公共电压信号线相连通而与上基板上的公共电极层相连通，从而使得上、下基板在栅极扫描线处的电压差为0，进而使得面板在栅极扫描处因为液晶没有受到电压差驱动不旋转而呈现常黑态，另外，对应数据线上方设置有由红色、绿色、蓝色色阻材料中的两种堆叠而成的第二遮光层；即通过覆盖第一遮光层和共通电极与上基板的公共电极层之间的短路实现了对栅极扫描线的遮光，防止栅极扫描线处的漏光，通过在数据线上方覆盖两种色阻材料堆叠而成的第二遮光层实现了对数据线的遮光，防止数据线处的漏光，并且由于栅极扫描线处只覆盖有单层色阻材料的第一遮光层，从而不会导致隔垫物厚度的缩短，因此，在保证隔垫物弹性压缩量和面板盒厚的前提下，省去了上基板上的黑色矩阵，面板开口率高、制程简单、生产成本低。
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为现有一种VA型COA液晶显示面板的结构示意图；
图2为本发明的VA型COA液晶显示面板的结构示意图；
图3为本发明的VA型COA液晶显示面板的对应于一像素区域的下基板的俯视图；
图4为本发明的VA型COA液晶显示面板的在栅极扫描线处的剖面示意图。
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2-4，本发明提供一种VA型COA液晶显示面板，包括相对设置的上基板200与下基板100、夹设于上、下基板200、100之间的液晶层300、及用于密封粘结上、下基板200、100的封框胶400；
所述下基板100包括TFT基板100’、设于所述TFT基板100’上的第一钝化层150、设于所述第一钝化层150上的彩色滤光层160、彩色遮光层170、设于所述彩色滤光层160、及彩色遮光层170上的第二钝化层、及设于第二钝化层上的像素电极191、公共电压信号线、共通电极193；
所述TFT基板100’包括第一衬底基板110、及设于第一衬底基板110上的数条栅极扫描线120、数条数据线130、数个TFT，所述数条栅极扫描线120与数条数据线130在所述第一衬底基板110上相互绝缘交错划分出的多个阵列排布的像素区域；
所述彩色遮光层170包括对应位于所述数条栅极扫描线120上方的第一遮光层171、及对应位于数条数据线130上方的第二遮光层172；
所述第一遮光层171由红色色阻材料、或蓝色色阻材料所组成；
所述第二遮光层172由红色色阻材料、绿色色阻材料、和蓝色色阻材料中的两种堆叠而成；
所述共通电极193对应的位于所述数条栅极扫描线120的上方，与所述公共电压信号线相连通。
具体地，所述上基板200包括第二衬底基板210、设于第二衬底基板210上的公共电极层220、及设于公共电极层220上的数个黑色隔垫物(Black Photo Spacer，BPS)230、黑色封边层240；所述数个黑色隔垫物230与黑色封边层240的材料均为黑色的弹性材料；所述数个黑色隔垫物230相应的位于所述数条栅极扫描线120、和数条数据线130的上方；所述黑色封边层240相应的位于所述封框胶400的上方。从而由于数个黑色隔垫物230 和黑色封边层240为同一材料，故可通过同一制程同时制成，其中，所述黑色封边层240可以起到对液晶面板边框的遮光作用。
另外，由于栅极扫描线120上方的第一遮光层171为单层的色阻材料，故不会对黑色隔垫物230的厚度造成影响，从而保证了黑色隔垫物230的弹性压缩量和面板盒厚。
具体地，所述黑色隔垫物230包括主黑色隔垫物231和辅助黑色隔垫物232；所述黑色隔垫物230为锥形柱状体。
具体的，所述封框胶400为导电封框胶，其内包含导电金球，所述公共电极层220通过封框胶400内的导电金球与下基板200上的公共电压信号线相连通。
本发明的VA型COA液晶显示面板，由于所述共通电极193对应的位于所述数条栅极扫描线130的上方，与所述公共电压信号线相连通，上基板上的公共电极层220与公共电压信号线相连通，从而所述共通电极193与公共电极层220相连通，故两者之间的电压差为0，那么液晶显示面板内位于数条栅极扫描线120的上方的液晶在无电压差驱动下不旋转即液晶显示面板在该处为常黑态；再结合在所述数条栅极扫描线120的上方设置的第一遮光层171，从而可以对显示面板的数条栅极扫描线120处进行有效的遮光；另外，在所述数条数据线130的上方设置的由两种色阻材料堆叠而成的第二遮光层172能够对显示面板的数条数据线130处进行有效的遮光；进而能够在不设置黑色矩阵的情况下，有效防止液晶显示面板的各像素区域间的混色。
具体地，所述彩色滤光层160包括分别对应位于数个像素区域内的数个红、绿、蓝色滤光单元161、162、163，所述红、绿、蓝色滤光单元161、162、163的材料分别为红、绿、蓝色光阻材料。除此之外，所述彩色滤光层160还可以包括白色滤光单元、透明滤光单元。
具体地，所述数个TFT对应的位于数个像素区域内，所述TFT包括栅极141、半导体层142、源极143、及漏极144；
所述下基板还包括形成于第一衬底基板110和数个TFT内的栅极141上的栅极绝缘层149；所述半导体层142形成于所述栅极绝缘层149上，所述源极143和漏极144形成于所述栅极绝缘层149和所述半导体层142上，所述源极143和漏极144分别与所述半导体层142的两端相接触；
所述第一钝化层150与第二钝化层对应所述漏极144的上方还设有过孔，所述像素电极191通过所述过孔与所述漏极144相连通。
具体地，所述数条栅极扫描线120与数个TFT的栅极141由同一金属 层经图案化制程后得到；所述数条数据线130与数个TFT的源极143和漏极144由同一金属层经图案化制程后得到；所述像素电极191、公共电压信号线、共通电极193由同一透明导电层经经图案化制程后得到；所述透明导电层的材料为ITO。
由于红色、和蓝色色阻材料两种材料在可见光区的穿透率较小，遮光效果表现较佳，故优选的，所述第二遮光层172由红色色阻材料和蓝色色阻材料堆叠而成。
具体地，所述彩色遮光层170与彩色滤光层160中相同材料的部分同时形成。例如，在本发明的VA型COA液晶显示面板的一优选实施例中，所述第一遮光层171由红色色阻材料所组成；所述第二遮光层172由红色色阻材料和蓝色色阻材料堆叠而成；那么在形成彩色滤光层160的红色滤光单元161的同时，还要在各个像素区域之间对应数条栅极扫描线120的上方形成第一遮光层171、对应数条数据线130的上方形成第二遮光层172中的红色色阻材料的部分；在形成彩色滤光层160的蓝色滤光单元163的同时，还要在各个像素区域之间对应数条数据线130的上方形成第二遮光层172中的蓝色色阻材料的部分。再如，在本发明的VA型COA液晶显示面板的一优选实施例中，所述第一遮光层171由蓝色色阻材料所组成；所述第二遮光层172由红色色阻材料和蓝色色阻材料堆叠而成；那么在形成彩色滤光层160的蓝色滤光单元163的同时，还要在各个像素区域之间的对应数条栅极扫描线120的上方形成第一遮光层171、对应数条数据线130的上方形成第二遮光层172中的蓝色色阻材料的部分；在形成彩色滤光层160的红色滤光单元161的同时，还要在各个像素区域之间对应数条数据线130的上方形成第二遮光层172中的红色色阻材料的部分。因此，本发明的VA型COA液晶显示面板，所述彩色遮光层171可以与彩色滤光层160同时制作而成，不会增加制程，相较于传统的采用黑色矩阵进行遮光的液晶显示面板，省去了黑色矩阵材料及黑色矩阵制程，从而节约了生产成本，缩短了生产周期。
综上所述，本发明提供的VA型COA液晶显示面板，对应栅极扫描线上方设置有红色或蓝色色阻材料的第一遮光层、及第一遮光层上方的共通电极，所述共通电极通过与公共电压信号线相连通而与上基板上的公共电极层相连通，从而使得上、下基板在栅极扫描线处的电压差为0，进而使得面板在栅极扫描处因为液晶没有受到电压差驱动不旋转而呈现常黑态，另外，对应数据线上方设置有由红色、绿色、蓝色色阻材料中的两种堆叠而成的第二遮光层；即通过覆盖第一遮光层和共通电极与上基板的公共电极 层之间的短路实现了对栅极扫描线的遮光，防止栅极扫描线处的漏光，通过在数据线上方覆盖两种色阻材料堆叠而成的第二遮光层实现了对数据线的遮光，防止数据线处的漏光，并且由于栅极扫描线处只覆盖有单层色阻材料的第一遮光层，从而不会导致隔垫物厚度的缩短，因此，在保证隔垫物弹性压缩量和面板盒厚的前提下，省去了上基板上的黑色矩阵，面板开口率高、制程简单、生产成本低。
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 (16)

  1. 一种VA型COA液晶显示面板，包括相对设置的上基板与下基板、夹设于上、下基板之间的液晶层、及用于密封粘结上、下基板的封框胶；
    所述下基板包括TFT基板、设于所述TFT基板上的第一钝化层、设于所述第一钝化层上的彩色滤光层、彩色遮光层、设于所述彩色滤光层、及彩色遮光层上的第二钝化层、及设于第二钝化层上的像素电极、公共电压信号线、共通电极；
    所述TFT基板包括第一衬底基板、及设于第一衬底基板上的数条栅极扫描线、数条数据线、数个TFT，所述数条栅极扫描线与数条数据线在所述第一衬底基板上相互绝缘交错划分出的多个阵列排布的像素区域；
    所述彩色遮光层包括对应位于所述数条栅极扫描线上方的第一遮光层、及对应位于数条数据线上方的第二遮光层；
    所述第一遮光层由红色色阻材料、或蓝色色阻材料所组成；
    所述第二遮光层由红色色阻材料、绿色色阻材料、和蓝色色阻材料中的两种堆叠而成；
    所述共通电极对应的位于所述数条栅极扫描线的上方，与所述公共电压信号线相连通。
  2. 如权利要求1所述的VA型COA液晶显示面板，其中，所述上基板包括第二衬底基板、设于第二衬底基板上的公共电极层、及设于公共电极层上的数个黑色隔垫物、黑色封边层；
    所述数个黑色隔垫物与黑色封边层的材料均为黑色的弹性材料；
    所述数个黑色隔垫物相应的位于所述数条栅极扫描线、和数条数据线的上方；
    所述黑色封边层相应的位于所述封框胶的上方。
  3. 如权利要求2所述的VA型COA液晶显示面板，其中，所述黑色隔垫物包括主黑色隔垫物和辅助黑色隔垫物。
  4. 如权利要求2所述的VA型COA液晶显示面板，其中，所述黑色隔垫物为锥形柱状体。
  5. 如权利要求2所述的VA型COA液晶显示面板，其中，所述封框胶为导电封框胶，其内包含导电金球，所述公共电极层通过封框胶内的导电金球与下基板上的公共电压信号线相连通。
  6. 如权利要求2所述的VA型COA液晶显示面板，其中，所述第二 遮光层由红色色阻材料和蓝色色阻材料堆叠而成。
  7. 如权利要求1所述的VA型COA液晶显示面板，其中，所述彩色滤光层包括分别对应位于数个像素区域内的数个红、绿、蓝色滤光单元，所述红、绿、蓝色滤光单元的材料分别为红、绿、蓝色光阻材料。
  8. 如权利要求6所述的VA型COA液晶显示面板，其中，所述彩色遮光层与彩色滤光层中相同材料的部分同时形成。
  9. 如权利要求1所述的VA型COA液晶显示面板，其中，所述数个TFT对应的位于数个像素区域内，所述TFT包括栅极、半导体层、源极、及漏极；
    所述下基板还包括形成于第一衬底基板和数个TFT内的栅极上的栅极绝缘层；所述半导体层形成于所述栅极绝缘层上，所述源极和漏极形成于所述栅极绝缘层和所述半导体层上，所述源极和漏极分别与所述半导体层的两端相接触；
    所述第一钝化层与第二钝化层对应所述漏极的上方还设有过孔，所述像素电极通过所述过孔与所述漏极相连通。
  10. 如权利要求9所述的VA型COA液晶显示面板，其中，所述数条栅极扫描线与数个TFT的栅极由同一金属层经图案化制程后得到；所述数条数据线与数个TFT的源极和漏极由同一金属层经图案化制程后得到；所述像素电极、公共电压信号线、共通电极由同一透明导电层经图案化制程后得到；所述透明导电层的材料为ITO。
  11. 一种VA型COA液晶显示面板，包括相对设置的上基板与下基板、夹设于上、下基板之间的液晶层、及用于密封粘结上、下基板的封框胶；
    所述下基板包括TFT基板、设于所述TFT基板上的第一钝化层、设于所述第一钝化层上的彩色滤光层、彩色遮光层、设于所述彩色滤光层、及彩色遮光层上的第二钝化层、及设于第二钝化层上的像素电极、公共电压信号线、共通电极；
    所述TFT基板包括第一衬底基板、及设于第一衬底基板上的数条栅极扫描线、数条数据线、数个TFT，所述数条栅极扫描线与数条数据线在所述第一衬底基板上相互绝缘交错划分出的多个阵列排布的像素区域；
    所述彩色遮光层包括对应位于所述数条栅极扫描线上方的第一遮光层、及对应位于数条数据线上方的第二遮光层；
    所述第一遮光层由红色色阻材料、或蓝色色阻材料所组成；
    所述第二遮光层由红色色阻材料、绿色色阻材料、和蓝色色阻材料中的两种堆叠而成；
    所述共通电极对应的位于所述数条栅极扫描线的上方，与所述公共电压信号线相连通；
    其中，所述上基板包括第二衬底基板、设于第二衬底基板上的公共电极层、及设于公共电极层上的数个黑色隔垫物、黑色封边层；
    所述数个黑色隔垫物与黑色封边层的材料均为黑色的弹性材料；
    所述数个黑色隔垫物相应的位于所述数条栅极扫描线、和数条数据线的上方；
    所述黑色封边层相应的位于所述封框胶的上方；
    其中，所述黑色隔垫物包括主黑色隔垫物和辅助黑色隔垫物；
    其中，所述黑色隔垫物为锥形柱状体；
    其中，所述封框胶为导电封框胶，其内包含导电金球，所述公共电极层通过封框胶内的导电金球与下基板上的公共电压信号线相连通。
  12. 如权利要求11所述的VA型COA液晶显示面板，其中，所述第二遮光层由红色色阻材料和蓝色色阻材料堆叠而成。
  13. 如权利要求11所述的VA型COA液晶显示面板，其中，所述彩色滤光层包括分别对应位于数个像素区域内的数个红、绿、蓝色滤光单元，所述红、绿、蓝色滤光单元的材料分别为红、绿、蓝色光阻材料。
  14. 如权利要求12所述的VA型COA液晶显示面板，其中，所述彩色遮光层与彩色滤光层中相同材料的部分同时形成。
  15. 如权利要求11所述的VA型COA液晶显示面板，其中，所述数个TFT对应的位于数个像素区域内，所述TFT包括栅极、半导体层、源极、及漏极；
    所述下基板还包括形成于第一衬底基板和数个TFT内的栅极上的栅极绝缘层；所述半导体层形成于所述栅极绝缘层上，所述源极和漏极形成于所述栅极绝缘层和所述半导体层上，所述源极和漏极分别与所述半导体层的两端相接触；
    所述第一钝化层与第二钝化层对应所述漏极的上方还设有过孔，所述像素电极通过所述过孔与所述漏极相连通。
  16. 如权利要求15所述的VA型COA液晶显示面板，其中，所述数条栅极扫描线与数个TFT的栅极由同一金属层经图案化制程后得到；所述数条数据线与数个TFT的源极和漏极由同一金属层经图案化制程后得到；所述像素电极、公共电压信号线、共通电极由同一透明导电层经图案化制程后得到；所述透明导电层的材料为ITO。
PCT/CN2016/074622 2016-02-16 2016-02-26 Va型coa液晶显示面板 Ceased WO2017140000A1 (zh)

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