CN110722462B - Grinding wheel for preparing display panel and preparation method of display panel - Google Patents
Grinding wheel for preparing display panel and preparation method of display panel Download PDFInfo
- Publication number
- CN110722462B CN110722462B CN201911014718.5A CN201911014718A CN110722462B CN 110722462 B CN110722462 B CN 110722462B CN 201911014718 A CN201911014718 A CN 201911014718A CN 110722462 B CN110722462 B CN 110722462B
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- Prior art keywords
- display panel
- array substrate
- substrate
- color film
- grinding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/02—Wheels in one piece
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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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
Abstract
The invention provides a grinding wheel for preparing a display panel and a preparation method of the display panel, wherein the grinding wheel for preparing the display panel comprises a wheel body and two annular grooves, wherein the wheel body is provided with a central shaft, and the two annular grooves are respectively distributed on the periphery of the wheel body around the central shaft of the wheel body; the two annular grooves are arranged at intervals; correspondingly placing the sides of the array substrate and the color film substrate in the annular groove, and polishing the sides and corners of the array substrate and the color film substrate; and polishing to form an edge grinding gap, filling side sealing glue in the edge grinding gap, connecting the frame glue with the side sealing glue, increasing the coating space of the frame glue, increasing the thickness of the side sealing glue, improving the sealing property of the display panel and improving the problem of glue overflow during coating of the side sealing glue.
Description
Technical Field
The invention relates to the technical field of display panels, in particular to a grinding wheel for preparing a display panel and a preparation method of the display panel.
Background
With the vigorous development of the era of liquid crystal display screens and the increasing promotion of display technologies, the market has more and more strict requirements on the quality, the size and the appearance of the display screens, and the ultra-large OLED screens with narrow frames and excellent image quality are successively provided. In order to meet the market demand and the visual and sensory pursuit, a rounded corner display screen is provided. The fillet design makes the transition of display four sides corner more natural, balanced, and the wholeness is strong for the whole of product has the sense of speed and the antecedent nature of vision. In addition, the round corner design also meets the aesthetic requirements, the safety requirements and the psychological requirements of human beings.
The TFT-LCD generally includes a thin film transistor substrate (Array substrate) and a color filter substrate (CF substrate), and the Array substrate and the CF substrate are sealed by Seal. In the design of the fillet display screen, four corners of the fillet display screen need to be designed into an arc shape, and the fillet display screen comprises an alignment film (PI), frame glue (Seal), metal lines and the like. The manufacturing process also needs corresponding fillet manufacturing processes, such as fillet PI coating, fillet cutting and the like.
Referring to fig. 1, fig. 1 is a schematic cross-sectional structure view of a rounded corner display panel in the prior art, a display panel 100 includes a display area 101 and a frame area 102 surrounding the display area 101, the display area 101 includes an array substrate 110, a liquid crystal layer 120, an alignment film 130 and a color film substrate 140 which are sequentially arranged, and the frame area 101 includes the array substrate 110, the color film substrate 140 and a sealant 150 which is arranged between the array substrate 110 and the color film substrate 140 which are sequentially arranged.
Because the alignment film is manufactured by an ink-jet printing process, the accuracy of the alignment film at the round corner is difficult to control, and the alignment film can be overlapped with the frame glue. The adhesion of the alignment film material is poor, which affects the sealing performance of the thin film transistor substrate and the color film substrate, and on the other hand, the alignment film has water absorption, which easily causes water vapor to invade and corrode the circuit in the box.
Therefore, after the display panel is formed into a box in the prior art, the edge of the liquid crystal panel needs to be correspondingly ground by using a grinding wheel so as to manufacture the side sealing adhesive to improve the sealing performance of the liquid crystal panel. Referring to fig. 2, fig. 2 is a schematic structural diagram of a grinding wheel in the prior art, in which the grinding wheel 10 includes a wheel body 11, the wheel body 11 has a central axis 12 and an annular groove 13, and the annular groove 13 is distributed around the central axis 12 of the wheel body 11 on the periphery of the wheel body 11.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a grinding wheel when grinding the display panel, wherein the edges of the array substrate 110 and the color filter substrate 140 correspond to the annular groove 13, and the edges of the array substrate 110 and the color filter substrate 140 are ground.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a display panel polished by a grinding wheel in the prior art, in which the edges of the array substrate 110 and the color film substrate 140 are ground to form an edge, and the edge is filled with an edge sealant 160. Since a gap exists between the side sealing compound 160 and the sealant 150 and the thickness of the side sealing compound 160 is small, the sealing performance of the display panel is affected, and on the other hand, the side sealing compound also has a problem of glue overflow.
Therefore, there is a need to develop a new method for manufacturing a display panel to overcome the drawbacks of the prior art.
Disclosure of Invention
An object of the present invention is to provide a method for manufacturing a display panel, which can solve the problem that the thickness of the sealing compound on the display panel side is too thin and the glue overflows in the prior art.
In order to achieve the above object, the present invention provides a grinding wheel for manufacturing a display panel, comprising a wheel body having a central axis and two annular grooves respectively distributed around the central axis of the wheel body on the periphery of the wheel body; the two annular grooves are arranged at intervals.
Further, in other embodiments, each of the annular grooves comprises a groove wall and a groove bottom, wherein the groove wall and the groove bottom form an included angle therebetween, and the included angle ranges from 120 ° to 170 °.
Further, in other embodiments, wherein the surface of the annular groove is coated with diamond or a diamond-like material.
Further, in other embodiments, the distance between the groove bottoms of the two annular grooves is in the range of 100nm to 1000 nm.
Another object of the present invention is to provide a method for manufacturing a display panel, the display panel including a display area and a frame area surrounding the display area, the method comprising the steps of: providing and assembling an array substrate and a color film substrate; sealing the array substrate and the color film substrate through frame glue, and forming a glue frame between the frame areas of the array substrate and the color film substrate; providing the grinding wheel for preparing the display panel, correspondingly placing the edges of the array substrate and the color film substrate in the annular groove, and grinding the edges and corners of the array substrate and the color film substrate; and polishing to form an edging gap, filling the edging gap with side sealing glue, and forming a side sealing frame.
Further, in another embodiment, after the step of forming the liquid crystal frame and between the step of providing the grinding wheel for manufacturing the display panel, a step of injecting liquid crystal between the array substrate and the color filter substrate is further included to form a liquid crystal layer.
Further, in another embodiment, the edge grinding notch includes a chamfer and an edge grinding, corners of the array substrate and the color film substrate are ground to form a triangular chamfer, and sides of the array substrate and the color film substrate are ground to form a rectangular edge grinding.
Further, in other embodiments, a distance between the array substrate and the color filter substrate is smaller than a spacing distance between groove bottoms of the two annular grooves.
Further, in other embodiments, the side sealing compound is connected to the sealant.
Further, in other embodiments, the material of the side sealing compound is silicon gel.
The invention has the beneficial effects that: the invention provides a grinding wheel for preparing a display panel and a preparation method of the display panel.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a rounded corner display panel in the prior art;
FIG. 2 is a schematic diagram of a prior art grinding wheel construction;
FIG. 3 is a schematic structural diagram of a prior art grinding wheel for grinding a display panel;
FIG. 4 is a schematic structural diagram of a display panel polished by a grinding wheel in the prior art;
fig. 5 is a schematic structural view of a grinding wheel for manufacturing a display panel according to embodiment 1 of the present invention;
fig. 6 is a flowchart of a method for manufacturing a display panel according to embodiment 2 of the present invention;
fig. 7 is a schematic structural diagram of the display panel in step S1 of the method for manufacturing a display panel according to embodiment 2 of the present invention;
fig. 8 is a schematic structural diagram of the display panel in step S2 of the method for manufacturing a display panel according to embodiment 2 of the present invention;
fig. 9 is a schematic structural diagram of the display panel manufacturing method provided in embodiment 2 of the present invention in step S3;
fig. 10 is a schematic structural diagram of the display panel in step S4 of the method for manufacturing a display panel according to embodiment 2 of the present invention.
Reference numerals:
a display panel-100; display area-101; frame area-102;
an array substrate-110; a liquid crystal layer-120; alignment film-130;
a color film substrate-140; frame glue-150;
a grinding wheel-10; a wheel body-11; a central axis-12;
an annular groove-13; side seal-160;
-20 a grinding wheel; a wheel body-21;
a central axis-22; an annular groove-23;
a slot wall-231; the bottom of the tank is-232;
a display panel-200; display area-201; a frame area 202;
an array substrate-210; a color film substrate-220;
frame glue-230; a liquid crystal layer-240; a rubber frame 231;
edging notch-240; side sealing glue-250;
side glue frame-251; chamfering-241; and (4) edging 242.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Specific structural and functional details disclosed herein are merely representative and are provided for purposes of describing example embodiments of the present invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
Example 1
Referring to fig. 5, fig. 5 is a schematic structural view of a grinding wheel for manufacturing a display panel according to embodiment 1 of the present invention, in which the grinding wheel 20 includes a wheel body 21, the wheel body 21 has a central axis 22, and two annular grooves 23, and the two annular grooves 23 are respectively distributed on the periphery of the wheel body 21 around the central axis 22 of the wheel body 21.
The two annular grooves 23 are spaced apart from each other, each annular groove 23 comprises a groove 231 and a groove bottom 232, an included angle is formed between the groove wall 231 and the groove bottom 232, the included angle ranges from 120 degrees to 170 degrees, and the spaced distance L1 between the groove bottoms 232 of the two annular grooves 23 ranges from 100nm to 1000 nm.
When the grinding wheel 20 grinds the display panel to be processed, the annular groove 23 serves as a grinding part to grind the display panel, and thus it is necessary to coat a diamond or diamond-like material on the surface of the annular groove 23 to improve the grinding quality.
Example 2
Referring to fig. 6, fig. 6 is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of the present invention, including the following steps S1-S4.
Referring to fig. 7, fig. 7 is a schematic structural diagram of the display panel in step S1 of the method for manufacturing a display panel according to the present embodiment; step S1: providing and assembling an array substrate 210 and a color film substrate 220; the display panel includes a display area 201 and a bezel area 202 surrounding the display area 201.
Specifically, the array substrate 210 includes a substrate, a buffer layer disposed on the substrate, an active layer disposed on the buffer layer, a gate insulating layer disposed on the active layer, a gate layer disposed on the gate insulating layer, a source drain layer disposed on the gate layer, a planarization layer disposed on the source drain layer, and a pixel electrode layer disposed on the planarization layer, wherein the array substrate 210 has a plurality of sub-pixels arranged in an array, and each sub-pixel includes the active layer, the gate insulating layer, the gate layer, and the source drain layer. The key point of the design of the present disclosure lies in the manufacturing method of the display panel, and thus the detailed structure of the array substrate 210 is not described in detail.
Referring to fig. 8, fig. 8 is a schematic structural diagram of the display panel 200 in step S2 of the method for manufacturing a display panel according to the present embodiment; step S2: the array substrate 210 and the color filter substrate 220 are sealed by the sealant 230, the sealant 231 is formed between the array substrate 210 and the frame region 202 of the color filter substrate 220, and the liquid crystal is injected between the array substrate 210 and the color filter substrate 220 to form the liquid crystal layer 230.
Referring to fig. 9, fig. 9 is a schematic structural diagram of the method for manufacturing a display panel according to the present embodiment in step S3; step S3: providing the grinding wheel used in example 1 to prepare the display panel, placing the edges of the array substrate 210 and the color filter substrate 220 in the annular groove 23, and grinding the edges and corners of the array substrate 210 and the color filter substrate 220.
The distance between the array substrate 210 and the color filter substrate 220 is less than the spacing distance L1 between the groove bottoms 232 of the two annular grooves 23.
Referring to fig. 10, fig. 10 is a schematic structural diagram of the display panel in step S4 of the method for manufacturing the display panel according to the embodiment; step S4: and grinding to form an edging gap 240, and filling side sealing glue 250 in the edging gap 240 to form a side sealing frame 251.
The corners of the array substrate 210 and the color film substrate 220 are polished to form triangular chamfers 241, the edges of the array substrate 210 and the color film substrate 220 are polished to form rectangular edging edges 242, the chamfers 241 and the edging edges 242 are part of the edging gaps 240, the side sealing adhesive 250 filled in the chamfers 241 is connected with the frame adhesive 230, the coating space of the frame adhesive is increased, the thickness of the side sealing adhesive is increased, the sealing performance of the display panel is improved, and the problem of coating overflow of the side sealing adhesive is also solved.
The side sealing adhesive 250 is made of silica gel.
The invention has the beneficial effects that: the invention provides a grinding wheel for preparing a display panel and a preparation method of the display panel, wherein two annular grooves which are spaced from each other are arranged on a wheel body of the grinding wheel, the side edges of an array substrate and a color film substrate are correspondingly arranged in the annular grooves, the side edges and the corner edges of the array substrate and the color film substrate are ground to form edge grinding gaps, side sealing glue is filled in the edge grinding gaps to form side sealing glue frames, the sealing glue is connected with the side sealing glue, the coating space of the sealing glue is increased, the thickness of the side sealing glue is increased, the sealing performance of the display panel is improved, and the problem of glue overflow during coating of the side sealing glue is also solved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A preparation method of a display panel is characterized in that the display panel comprises a display area and a frame area surrounding the display area, and the preparation method of the display panel comprises the following steps:
providing and assembling an array substrate and a color film substrate;
sealing the array substrate and the color film substrate through frame glue, and forming a glue frame between the frame areas of the array substrate and the color film substrate;
providing a grinding wheel, wherein the grinding wheel comprises a wheel body and two annular grooves, the wheel body is provided with a central shaft, and the two annular grooves are distributed on the periphery of the wheel body around the central shaft of the wheel body respectively; the two annular grooves are arranged at intervals;
correspondingly placing the sides of the array substrate and the color film substrate in the annular groove, and polishing the sides and corners of the array substrate and the color film substrate;
and polishing to form an edging gap, filling the edging gap with side sealing glue, and forming a side sealing frame.
2. The method according to claim 1, further comprising injecting liquid crystal between the array substrate and the color filter substrate to form a liquid crystal layer between the step of forming the frame and the step of providing the grinding wheel for manufacturing the display panel.
3. The method according to claim 1, wherein the edge grinding notch comprises a chamfer and an edge grinding, wherein a triangular chamfer is formed by grinding the corners of the array substrate and the color film substrate, and a rectangular edge is formed by grinding the sides of the array substrate and the color film substrate.
4. The method according to claim 1, wherein a distance between the array substrate and the color filter substrate is smaller than a spacing distance between groove bottoms of the two annular grooves.
5. The method of claim 1, wherein the side seal is bonded to the sealant.
6. The method as claimed in claim 1, wherein the side sealing compound is made of silicone.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911014718.5A CN110722462B (en) | 2019-10-24 | 2019-10-24 | Grinding wheel for preparing display panel and preparation method of display panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911014718.5A CN110722462B (en) | 2019-10-24 | 2019-10-24 | Grinding wheel for preparing display panel and preparation method of display panel |
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| CN110722462A CN110722462A (en) | 2020-01-24 |
| CN110722462B true CN110722462B (en) | 2020-11-06 |
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| CN115718383A (en) * | 2021-08-27 | 2023-02-28 | 京东方科技集团股份有限公司 | Curved surface liquid crystal display panel and curved surface display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7202923B2 (en) * | 2001-11-27 | 2007-04-10 | Sharp Kabushiki Kaisha | Liquid crystal display with polarizer with inclined edge portion |
| JP4768483B2 (en) * | 2006-03-22 | 2011-09-07 | 東芝モバイルディスプレイ株式会社 | Manufacturing method of substrate device |
| WO2012077645A1 (en) * | 2010-12-08 | 2012-06-14 | 電気化学工業株式会社 | Method for processing hard substrate laminated body and method for manufacturing plate-shaped product |
| TWI485492B (en) * | 2012-06-29 | 2015-05-21 | Au Optronics Corp | Display module and method for manufacturing the same |
| CN203292976U (en) * | 2013-06-04 | 2013-11-20 | 浙江嘉良科技有限公司 | Tool for machining mobile phone panel |
| CN203480171U (en) * | 2013-09-06 | 2014-03-12 | 京东方科技集团股份有限公司 | Liquid crystal display panel and liquid crystal display device |
| CN106541310B (en) * | 2015-09-23 | 2019-09-17 | 上海和辉光电有限公司 | The cutting method of display panel |
| CN107263219A (en) * | 2017-06-23 | 2017-10-20 | 四川旭虹光电科技有限公司 | The processing method and photovoltaic of glass panel/photo-thermal device |
| CN107272270A (en) * | 2017-08-15 | 2017-10-20 | 武汉华星光电技术有限公司 | A kind of thin-film transistor array base-plate and liquid crystal display panel |
| CN108428804A (en) * | 2018-04-19 | 2018-08-21 | 武汉华星光电技术有限公司 | Oled display panel and its packaging method |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |
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