CN107229152B - Liquid crystal display panel and manufacturing method thereof - Google Patents
Liquid crystal display panel and manufacturing method thereof Download PDFInfo
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- CN107229152B CN107229152B CN201710539587.7A CN201710539587A CN107229152B CN 107229152 B CN107229152 B CN 107229152B CN 201710539587 A CN201710539587 A CN 201710539587A CN 107229152 B CN107229152 B CN 107229152B
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- 239000000565 sealant Substances 0.000 claims description 32
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- 210000002858 crystal cell Anatomy 0.000 description 1
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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
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of 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
- G02F1/136—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
- G02F1/136209—Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
-
- 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
- G02F1/136227—Through-hole connection of the pixel electrode to the active element through an insulation layer
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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)
- Liquid Crystal (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
Abstract
The invention provides a manufacturing method of liquid crystal display panel and a liquid crystal display panel, wherein the manufacturing method of the liquid crystal display panel is characterized in that a photomask process is utilized to pattern a flat layer in an effective display area to form a second via hole exposing a TFT layer, and simultaneously the flat layer in a frame glue area is removed, so that after a BPS light shielding layer is manufactured subsequently, the height difference between the upper surface of a black frame covering the frame glue area in the BPS light shielding layer and the upper surface of a main spacer is increased, the thickness of frame glue arranged between a color film substrate and a black frame of an array substrate is increased, the frame glue can be doped with fibers with larger particle diameter, compared with the prior art, the particle diameter of the fibers doped in the frame glue can be controlled within the particle diameter range of mass production fibers, and the cost of the liquid crystal display panel is effectively reduced.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display panel and a manufacturing method thereof.
Background
With the development of Display technology, flat panel Display devices such as Liquid Crystal Displays (LCDs) have advantages such as high image quality, power saving, thin body, and application range, and thus is widely used in various consumer electronics products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, and desktop computers, and is becoming the mainstream of Display devices.
Generally, a Liquid Crystal display panel is composed of a Color Filter (CF) substrate, a Thin Film Transistor (TFT) substrate, Liquid Crystal (LC) sandwiched between the Color Filter substrate and the TFT substrate, and a Sealant frame (Sealant), and the forming process generally includes a front Array process (Thin film, yellow light, etching, and stripping), a middle Cell process (TFT substrate and CF substrate bonding), and a rear module assembly process (driving IC and printed circuit board bonding), wherein the front Array process mainly forms the TFT substrate to control the movement of Liquid Crystal molecules, the middle Cell process mainly adds Liquid Crystal between the TFT substrate and the CF substrate, and the rear module assembly process mainly drives the IC bonding to be integrated with the printed circuit board to drive the Liquid Crystal molecules to rotate, thereby displaying images.
In the prior art, a Photo Spacer (PS) is usually fabricated on a CF substrate to support the liquid crystal cell thickness, and in order to prevent color shift or light leakage of the liquid crystal display panel, a Black Matrix (BM) needs to be fabricated in the CF substrate, the Photo Spacer and the Black matrix need yellow light processes to be formed, respectively, in order to simplify the process and save the cost, another technique utilizes a Black Photo Spacer (Black Photo Spacer, BPS) material with light-shielding property and elasticity to fabricate the Black matrix and the main and auxiliary spacers on the array substrate simultaneously by a yellow light process through a color filter process, as shown in fig. 1, for the conventional liquid crystal display panels employing the BPS technology, the liquid crystal display panel includes an array substrate 100 'and a color filter substrate 200', a liquid crystal layer 300 'disposed between the array substrate 100' and a color filter substrate 200 ', and a liquid crystal layer 300' disposed outside the liquid crystal display panel 100 'and connected with the array substrate 100' and 200 ', and a liquid crystal display substrate 300' and a frame-doped sealant 120 'disposed between the common substrate 100' and a frame substrate 100 'and a pixel-substrate 140', the effective pixel-pixel.
Disclosure of Invention
The invention aims to provide methods for manufacturing a liquid crystal display panel, which can effectively reduce the cost of the liquid crystal display panel.
Another object of the present invention is to provide liquid crystal display panels with low production cost.
In order to achieve the above object, the present invention first provides a method for manufacturing kinds of liquid crystal display panels, comprising the following steps:
step S1, providing a th substrate, and defining an effective display area and a frame rubber area positioned outside the effective display area on the th substrate;
step S2, forming a TFT layer on the substrate, forming a color resistance layer in the effective display area on the TFT layer, and forming a th through hole on the color resistance layer;
step S3, forming a flat layer on the color resistance layer and the TFT layer, patterning the flat layer by using photomask processes, forming a second via hole corresponding to the th via hole, and removing the flat layer in the frame rubber region;
step S4, forming a pixel electrode on the remaining planarization layer, the pixel electrode being in contact with the TFT layer through the second via hole;
step S5, forming a BPS light shielding layer on the flat layer, the pixel electrode and the TFT layer to obtain an array substrate;
the BPS light shielding layer comprises a black matrix positioned in the effective display area, a main spacer and an auxiliary spacer positioned on the black matrix, and a black frame covering the frame rubber area;
step S6, providing a color film substrate, coating frame glue on the frame glue area or the black frame on the side of the color film substrate , dropping liquid crystal in the effective display area on the side of the color film substrate or the side with the black frame of the array substrate, and assembling the array substrate and the color film substrate to obtain the liquid crystal display panel.
The step S2 specifically includes:
step S21, forming a gate in the effective display area on the th substrate;
step S22, forming a gate insulation layer covering the effective display area and the frame rubber area above the gate;
step S23, forming an active layer on the gate insulating layer above the gate electrode;
step S24, forming an interlayer insulating layer covering the effective display area and the frame glue area above the active layer, and forming two third via holes on the interlayer insulating layer corresponding to the two ends of the active layer;
step S25, forming spaced source and drain electrodes on the interlayer insulating layer in the effective display region; the source electrode and the drain electrode are respectively contacted with two ends of the active layer through third via holes to obtain a TFT layer;
step S26, forming a photoresist layer on the TFT layer in the effective display area, and forming a th via exposing the drain on the photoresist layer by using photo-masking processes;
the second via hole formed in the step S3 exposes the drain electrode, and the pixel electrode is connected to the drain electrode through the second via hole.
The step S22 further includes a step of removing the gate insulating layer located in the frame rubber region after the gate insulating layer is formed.
The step S24 is to remove the interlayer insulating layer located in the frame glue region while forming the third via hole of the interlayer insulating layer.
The material of the flat layer is a high polymer material;
the sum of the thicknesses of the main shock insulator and the black matrix is equal to the thickness of the black frame;
and in the step S6, combining the side of the color film substrate with the common electrode with the side of the array substrate with the black frame.
The invention also provides liquid crystal display panels, which comprise an array substrate, a color film substrate, a liquid crystal layer and frame glue, wherein the array substrate and the color film substrate are oppositely arranged, the liquid crystal layer is arranged between the array substrate and the color film substrate, the frame glue is arranged outside the liquid crystal layer and is connected with the array substrate and the color film substrate, the liquid crystal display panel is provided with an effective display area corresponding to the liquid crystal layer and a frame glue area corresponding to the frame glue, the array substrate comprises a substrate, a TFT layer arranged on a substrate, a color resistance layer arranged on the TFT layer in the effective display area, a flat layer covering the color resistance layer in the effective display area, a pixel electrode arranged on the flat layer and a BPS shading layer arranged on the pixel electrode, the flat layer and the TFT layer, the color resistance layer is internally provided with a through hole in the effective display area, the flat layer is provided with a second through hole corresponding to the through hole, the pixel electrode is connected with the TFT layer through the second through hole, the BPS shading layer comprises a black matrix arranged on the pixel electrode and the flat layer in the effective display area, a main spacer and an auxiliary spacer arranged on the black matrix, and.
The TFT layer comprises a grid arranged on an th substrate in an effective display area, a grid insulating layer covering the grid, an active layer arranged on the grid insulating layer and corresponding to the grid, an interlayer insulating layer covering the active layer, two third through holes arranged on the interlayer insulating layer and corresponding to the two ends of the active layer, and a spaced source electrode and a spaced drain electrode arranged on the interlayer insulating layer in the effective display area, wherein the source electrode and the drain electrode are respectively contacted with the active layer through the third through holes, the th through hole and the second through hole expose the drain electrode, and the pixel electrode is connected with the drain electrode through the second through hole.
The gate insulating layer is disposed in the effective display region.
The interlayer insulating layer is arranged in the effective display area.
The material of the flat layer is a high polymer material;
the sum of the thicknesses of the main shock insulator and the black matrix is equal to the thickness of the black frame;
the color film substrate comprises a second substrate and a common electrode arranged on the second substrate; the frame glue is arranged between the black frame and the common electrode.
The manufacturing method of liquid crystal display panels has the advantages that when a photomask manufacturing process is used for patterning the flat layer in the effective display area to form the second through hole exposing the TFT layer, the flat layer in the frame glue area is removed, so that after a BPS light shielding layer is manufactured subsequently, the height difference between the upper surface of the black frame covering the frame glue area in the BPS light shielding layer and the upper surface of the main spacer is increased, the thickness of the frame glue arranged between the color film substrate and the black frame of the array substrate is increased, the frame glue can be doped with fibers with larger particle diameters, compared with the prior art, the particle diameter of the fibers doped in the frame glue can be controlled within the particle diameter range of mass production fibers, and the cost of the liquid crystal display panel is effectively reduced.
Drawings
For a further understanding of the nature and technical content of the present invention , reference should be made to the following detailed description of the invention and accompanying drawings which are provided for purposes of illustration and description only and are not intended to be limiting.
In the drawings, there is shown in the drawings,
fig. 1 is a schematic structural diagram of a conventional liquid crystal display panel using a BPS technique;
FIG. 2 is a flow chart of a method for fabricating a liquid crystal display panel according to the present invention;
FIG. 3 is a schematic diagram of steps S1 and S2 of the method for fabricating a liquid crystal display panel according to the present invention;
FIG. 4 is a schematic diagram of step S3 of the method for fabricating a liquid crystal display panel according to the present invention;
FIG. 5 is a diagram illustrating step S4 of the method for fabricating a liquid crystal display panel according to the present invention;
FIG. 6 is a schematic diagram of step S5 of the method for fabricating a liquid crystal display panel according to the present invention;
fig. 7 is a schematic diagram of step S6 of the method for manufacturing a liquid crystal display panel according to the present invention and a structural schematic diagram of the liquid crystal display panel according to the present invention.
Detailed Description
To further explain the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Referring to fig. 2, the present invention provides a manufacturing method of liquid crystal display panel, which includes the following steps:
in step S1, please refer to fig. 3, a substrate 110 is provided, and an effective display area 510 and a frame glue area 520 located outside the effective display area 510 are defined on the substrate 110.
Specifically, the th substrate 110 may be glass.
In step S2, referring to fig. 3, a TFT layer 120 is formed on the th substrate 110, a color resist layer 130 is formed in the effective display area 510 on the TFT layer 120, and a th via 131 is formed on the color resist layer 130.
Specifically, the step S2 specifically includes:
step S21, forming a gate 121 in the effective display area 510 on the th substrate 110;
step S22, forming a gate insulating layer 122 over the gate 121 to cover the effective display area 510 and the sealant area 520;
step S23, forming an active layer 123 on the gate insulating layer 122 above the gate electrode 121;
step S24, forming an interlayer insulating layer 124 covering the effective display area 510 and the sealant area 520 above the active layer 123, and forming two third vias 125 on the interlayer insulating layer 124 corresponding to the two ends of the active layer 123;
step S25, forming spaced source 126 and drain 127 on the inter-layer insulation layer 124 in the effective display area 510; the source electrode 126 and the drain electrode 127 are respectively contacted with two ends of the active layer 123 through a third via hole 125 to obtain a TFT layer 120;
step S26 is to form a color resist layer 130 on the TFT layer 120 in the active display area 510, and form a th via 131 exposing the drain 127 on the color resist layer 130 by using mask processes.
In step S3, please refer to fig. 4, a planarization layer 140 is formed on the color resist layer 130 and the TFT layer 120, the planarization layer 140 is patterned by using photo-masking processes, and the planarization layer 140 in the sealant region 520 is removed while forming a second via 141 corresponding to the th via 131.
Specifically, the second via 141 is formed within the th via 131.
Specifically, the material of the planarization layer 140 is a polymer material.
Specifically, the second via 141 formed in step S3 exposes the drain 127.
In step S4, referring to fig. 5, a pixel electrode 150 is formed on the remaining planarization layer 140, and the pixel electrode 150 contacts the TFT layer 120 through the second via 141.
Specifically, the pixel electrode 150 is connected to the drain electrode 127 through a second via 141.
Step S5, referring to fig. 6, forming a BPS light shielding layer 160 on the planarization layer 140, the pixel electrode 150, and the TFT layer 120 to obtain an array substrate 100;
the BPS light shielding layer 160 includes a black matrix 161 in the effective display area 510, a main spacer 162 and an auxiliary spacer 163 on the black matrix 161, and a black frame 164 covering the frame glue area 520.
Specifically, in step S5, layers of BPS light-shielding material are formed on the planarization layer 140, the pixel electrode 150 and the TFT layer 120, and the BPS light-shielding material is patterned by using halftone mask or gray scale mask to obtain the BPS light-shielding layer 160.
Preferably, the thickness of the black border 164 is equal to the sum of the thicknesses of the main spacers 162 and the black matrix 161, so as to effectively shield the frame glue region 520 from light.
Step S6, please refer to fig. 7, providing the color filter substrate 200, coating the frame glue 400 on the frame glue region 520 or the black frame 164 on the side of the color filter substrate 200 , dropping liquid crystal in the effective display region 510 on the side of the color filter substrate 200 or the side where the array substrate 100 has the black frame 164, assembling the array substrate 100 and the color filter substrate 200, and forming the liquid crystal layer 300 between the array substrate 100 and the color filter substrate 200 corresponding to the effective display region 510, thereby obtaining the liquid crystal display panel.
Specifically, the frame sealant 400 is doped with fibers 410 for supporting the frame sealant 400.
In step S6, a frame adhesive 400 is coated on the common electrode 220 of the color filter substrate 200 in the frame adhesive region 520 or the black frame 164, liquid crystal is dropped into the effective display region 510 on the side of the color filter substrate 200 having the common electrode 220 or the side of the array substrate 100 having the black frame 164, and the side of the color filter substrate 200 having the common electrode 220 is paired with the side of the array substrate 100 having the black frame 164.
It should be noted that, in the conventional method for manufacturing a liquid crystal display panel, the thickness of the flat layer made of a polymer material is 2 μm, while the flat layer 140 made of a PFA material in the effective display area 510 is patterned by using a photomask process to form the second via hole 141 exposing the TFT layer 120, the flat layer 140 in the frame sealant region 520 is removed, so that after the subsequent manufacturing of the BPS light shielding layer 160, the black frame 164 covering the frame sealant region 520 in the BPS light shielding layer 160 is directly manufactured on the TFT layer 120, and the height difference between the upper surface of the BPS light shielding layer 160 and the upper surface of the main spacer 162 increases the thickness of the flat layer 140, so that after the array substrate 100 and the color filter substrate 200 are combined to obtain the liquid crystal display panel, the distance between the common electrode 220 of the color filter substrate 200 and the black frame 164 of the array substrate 100 is increased, and the thickness of the frame sealant 400 disposed between the common electrode 220 of the color filter substrate 200 and the black frame 164 of the array substrate 100 is increased, so that the fibers 400 can be doped with larger diameter than the fibers in the conventional technology, and the fiber size of the sealant 410 can be effectively reduced in the range of the liquid crystal display panel.
, in order to further increase the height difference between the upper surface of the main spacer 162 and the upper surface of the black frame 164, that is, increase the thickness of the frame sealant 400, so as to increase the particle size of the fibers 410 in the frame sealant 400, on the basis of removing the planarization layer 140 in the frame sealant region 520, the layer or the multiple layers of insulating material layers in the TFT layer 120 may be selectively removed in the frame sealant region 520. for example, in the embodiment of the present invention, the portion of the gate insulating layer 122 in the frame sealant region 520 in the TFT layer 120 is removed, specifically, after the gate insulating layer 122 is formed in the step S22, the gate insulating layer 122 is patterned by using a mask to remove the gate insulating layer 122 in the frame sealant region 520, and for example, in another embodiment of the present invention, the portion of the interlayer insulating layer 124 in the frame sealant region in the TFT layer 120 is removed, specifically, in the step S24, the particle size of the fibers 125 in the frame sealant region is increased by .
Referring to fig. 7, based on the same inventive concept, the invention further provides a liquid crystal display panel manufactured by the method for manufacturing the liquid crystal display panel, the liquid crystal display panel comprises an array substrate 100 and a color film substrate 200 which are oppositely arranged, a liquid crystal layer 300 arranged between the array substrate 100 and the color film substrate 200, and a sealant 400 arranged outside the liquid crystal layer 300 and connecting the array substrate 100 and the color film substrate 200, the liquid crystal display panel comprises an effective display area 510 corresponding to the liquid crystal layer 300 and a sealant area 520 corresponding to the sealant 400, the array substrate 100 comprises a th substrate 110, a TFT layer 120 arranged on a th substrate 110, a color resist layer 130 arranged on the TFT layer 120 in the effective display area 510, a flat layer 140 covering the color resist layer 130 in the effective display area 510, a pixel electrode 150 arranged on the flat layer 140, and a BPS light-shielding layer 160 arranged on the pixel electrode 150, the flat layer 140 and the TFT layer 120, a th through hole 131 is arranged in the effective display area 510, the flat layer 140 is provided with a second pixel electrode 141 corresponding to the second pixel electrode 131, the second pixel electrode 141 is arranged on the main substrate, the black matrix 120 is arranged on the main substrate, the main substrate 120, and the black matrix substrate 120, the black matrix is arranged on the main substrate 120, and the sealant area, the black matrix substrate 120, and the black matrix is arranged on the black matrix substrate 164.
Specifically, the frame glue 400 is doped with fibers 410.
Specifically, the TFT layer 120 includes a gate electrode 121 disposed on a th substrate 110 in the effective display area 510, a gate insulating layer 122 covering the gate electrode 121, an active layer 123 disposed on the gate insulating layer 122 above the gate electrode 121, an interlayer insulating layer 124 covering the active layer 123, two third vias 125 disposed on the interlayer insulating layer 124 and above two ends of the active layer 123, and a source electrode 126 and a drain electrode 127 disposed at intervals on the interlayer insulating layer 124 in the effective display area 510, wherein the source electrode 126 and the drain electrode 127 are in contact with the active layer 123 through the third vias 125, respectively, the via 131 and the second via 141 expose the drain electrode 127, and the pixel electrode 150 is connected to the drain electrode 127 through the second via 141.
Specifically, the gate 121 covers the entire surface of the th substrate 110, and the interlayer insulating layer 124 covers the entire surface of the th substrate 110.
Specifically, the material of the planarization layer 140 is a polymer material.
Preferably, the sum of the thicknesses of the main spacer 162 and the black matrix 161 is equal to the thickness of the black border 164.
Specifically, the color filter substrate 200 includes a second substrate 210 and a common electrode 220 disposed on the second substrate 210; the sealant 400 is disposed between the black frame 164 and the common electrode 220.
It should be noted that, in the liquid crystal display panel of the present invention, the flat layer 140 covering the color resist layer 130 is only disposed in the effective display area 510, and the flat layer 140 is not disposed in the frame glue area 520, so that the black frame 164 covering the frame glue area 520 in the BPS light shielding layer 160 is directly fabricated on the TFT layer 120, compared with the substrate in the prior art in which the entire flat layer covers the array substrate, the height difference between the upper surface of the black frame 164 and the upper surface of the main spacer 162 in the present invention increases the thickness of the flat layer 140, so that the distance between the common electrode 220 of the color film substrate 200 and the black frame 164 of the array substrate 100 increases, that is, the thickness of the frame glue 400 disposed between the common electrode 220 of the color film substrate 200 and the black frame 164 of the array substrate 100 increases, so that the frame glue 400 can be doped with the fiber 410 with a larger diameter, and the particle diameter of the fiber 410 doped in the color film substrate 400 can be controlled within the particle diameter range of mass production fiber, thereby effectively reducing the cost of the liquid crystal display panel.
It is worth mentioning that, in order to increase the height difference between the upper surface of the main spacer 162 and the upper surface of the black frame 164, that is, to increase the thickness of the sealant 400, and to increase the particle size of the fibers 410 in the sealant 400, on the basis of disposing the planarization layer 140 only in the effective display region 510, it is also possible to selectively dispose layers or multiple layers of insulating material layers in the TFT layer 120 only in the effective display region 510, for example, in embodiments of the present invention, the gate insulating layer 122 is disposed only in the effective display region 510, and for example, in another embodiment of the present invention, the interlayer insulating layer 124 is disposed only in the effective display region 510.
In summary, according to the method for manufacturing a liquid crystal display panel of the present invention, the planarization layer in the active display area is patterned by using the photo-mask process to form the second via hole exposing the TFT layer, and the planarization layer in the frame glue area is removed, so that after the BPS light-shielding layer is manufactured subsequently, the height difference between the upper surface of the black frame covering the frame glue area and the upper surface of the main spacer in the BPS light-shielding layer is increased, thereby increasing the thickness of the frame glue disposed between the color film substrate and the black frame of the array substrate, so that the frame glue can be doped with fibers having larger particle diameters.
As described above, it will be apparent to those skilled in the art that various other changes and modifications can be made based on the technical solution and the technical idea of the present invention, and all such changes and modifications should fall within the protective scope of the appended claims.
Claims (10)
1, A manufacturing method of LCD panel, characterized by that, including the following steps:
step S1, providing a substrate (110), and defining an effective display area (510) and a frame rubber area (520) positioned outside the effective display area (510) on the substrate (110);
step S2, forming a TFT layer (120) on a th substrate (110), forming a color resistance layer (130) in the effective display area (510) on the TFT layer (120), and forming a th through hole (131) on the color resistance layer (130);
step S3, forming a flat layer (140) on the color resistance layer (130) and the TFT layer (120), patterning the flat layer (140) by using photo-mask processes, forming a second via hole (141) corresponding to the th via hole (131), and removing the flat layer (140) in the frame rubber region (520);
step S4, forming a pixel electrode (150) on the remaining flat layer (140), wherein the pixel electrode (150) is contacted with the TFT layer (120) through a second via hole (141);
step S5, forming a BPS light shielding layer (160) on the flat layer (140), the pixel electrode (150) and the TFT layer (120) to obtain an array substrate (100);
the BPS light shielding layer (160) comprises a black matrix (161) positioned in the effective display area (510), a main spacer (162) and an auxiliary spacer (163) positioned on the black matrix (161), and a black frame (164) covering the frame rubber area (520);
step S6, providing a color filter substrate (200), coating frame glue (400) on the frame glue area (520) or the black frame (164) on the side of the color filter substrate (200) , dropping liquid crystal in the effective display area (510) on the side of the color filter substrate (200) or the side of the array substrate (100) with the black frame (164), and combining the array substrate (100) and the color filter substrate (200) to obtain the liquid crystal display panel.
2. The method for manufacturing a liquid crystal display panel according to claim 1, wherein the step S2 specifically includes:
step S21, forming a gate electrode (121) in the effective display area (510) on the th substrate (110);
step S22, forming a gate insulation layer (122) covering the effective display area (510) and the frame rubber area (520) above the gate (121);
step S23, forming an active layer (123) on the gate insulating layer (122) above the corresponding gate (121);
step S24, forming an interlayer insulating layer (124) covering the effective display area (510) and the frame rubber area (520) above the active layer (123), and forming two third via holes (125) above two ends of the active layer (123) corresponding to the interlayer insulating layer (124);
step S25, forming spaced source (126) and drain (127) in the effective display area (510) on the interlayer insulating layer (124); the source electrode (126) and the drain electrode (127) are respectively contacted with two ends of the active layer (123) through third through holes (125) to obtain a TFT layer (120);
step S26, forming a color resistance layer (130) on the TFT layer (120) in the effective display area (510), and forming a th via hole (131) exposing the drain electrode (127) on the color resistance layer (130) by using mask processes;
the second via hole (141) formed in the step S3 exposes the drain electrode (127), and the pixel electrode (150) is connected to the drain electrode (127) through the second via hole (141).
3. The method of claim 2, wherein the step S22 further includes a step of removing the gate insulating layer (122) in the sealant region (520) after the step of forming the gate insulating layer (122).
4. The method of claim 2, wherein the step S24 is performed to remove the interlayer insulating layer (124) in the sealant region (520) while forming the third via hole (125) of the interlayer insulating layer (124).
5. The method for manufacturing a liquid crystal display panel according to claim 1, wherein the material of the planarization layer (140) is a polymer material;
the sum of the thicknesses of the main spacer (162) and the black matrix (161) is equal to the thickness of the black border (164);
the color filter substrate (200) comprises a second substrate (210) and a common electrode (220) formed on the second substrate (210), and in the step S6, a side of the color filter substrate (200) with the common electrode (220) is paired with a side of the array substrate (100) with a black frame (164).
The liquid crystal display panel is characterized by comprising an array substrate (100) and a color film substrate (200) which are oppositely arranged, a liquid crystal layer (300) arranged between the array substrate (100) and the color film substrate (200), and a sealant (400) arranged outside the liquid crystal layer (300) and connected with the array substrate (100) and the color film substrate (200), wherein the liquid crystal display panel is provided with an effective display area (510) corresponding to the liquid crystal layer (300) and a sealant area (520) corresponding to the sealant (400), the array substrate (100) comprises a -th substrate (110), a TFT layer (120) arranged on a -th substrate (110), a color resistance layer (130) arranged on the TFT layer (120) in the effective display area (510), a flat layer (140) covering the color resistance layer (130) in the effective display area (510), a pixel electrode (150) arranged on the flat layer (140), and a BPS (160) arranged on the pixel electrode (150), the flat layer (140) and a pixel electrode (160) and a second pixel electrode (161) arranged on the effective display area (120), a black matrix substrate (161) and a black matrix display area (161) which are arranged on the TFT substrate (161), a black matrix display area (161) and a second pixel substrate (161) which are arranged on the effective display area (161), a black matrix display area (161) and a black matrix display area (161) which are arranged on the TFT substrate (131) and a black matrix substrate (161), and a black matrix display area (161), wherein the TFT substrate (161) are arranged on the effective display area (131) and a second pixel substrate (161) and a black matrix substrate (161) are arranged in the effective display area (161) and a black matrix substrate (131) and a black;
a flat layer (140) covering the color resist layer (130) is provided only in the effective display area (510), and no flat layer (140) is provided in the frame rubber area (520).
7. The liquid crystal display panel of claim 6, wherein the TFT layer (120) comprises a gate electrode (121) disposed on an th substrate (110) in the active display region (510), a gate insulating layer (122) covering the gate electrode (121), an active layer (123) disposed on the gate insulating layer (122) above the gate electrode (121), an interlayer insulating layer (124) covering the active layer (123), two third via holes (125) disposed on the interlayer insulating layer (124) above two ends of the active layer (123), and a source electrode (126) and a drain electrode (127) disposed on the interlayer insulating layer (124) in the active display region (510) at intervals, wherein the source electrode (126) and the drain electrode (127) are in contact with the active layer (123) through the third via holes (125), the th via hole (131) and the second via hole (141) expose the drain electrode (127), and the pixel electrode (150) is connected to the drain electrode (127) through the second via hole (141).
8. The liquid crystal display panel according to claim 7, wherein the gate insulating layer (122) is provided in the effective display region (510).
9. The liquid crystal display panel according to claim 7, wherein the interlayer insulating layer (124) is provided in the effective display region (510).
10. The liquid crystal display panel according to claim 6, wherein the material of the planarization layer (140) is a polymer material;
the sum of the thicknesses of the main spacer (162) and the black matrix (161) is equal to the thickness of the black border (164);
the color film substrate (200) comprises a second substrate (210) and a common electrode (220) arranged on the second substrate (210); the frame glue (400) is arranged between the black frame (164) and the common electrode (220).
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| CN113589582A (en) * | 2021-08-13 | 2021-11-02 | 信利(仁寿)高端显示科技有限公司 | Liquid crystal display screen manufacturing method and liquid crystal display screen |
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