CN115453782A - Secondary cutting process for liquid crystal display screen - Google Patents
Secondary cutting process for liquid crystal display screen Download PDFInfo
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- CN115453782A CN115453782A CN202211204443.3A CN202211204443A CN115453782A CN 115453782 A CN115453782 A CN 115453782A CN 202211204443 A CN202211204443 A CN 202211204443A CN 115453782 A CN115453782 A CN 115453782A
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- Prior art keywords
- liquid crystal
- crystal display
- cut
- fog
- cutting process
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 73
- 238000005520 cutting process Methods 0.000 title claims abstract description 48
- 239000011521 glass Substances 0.000 claims abstract description 18
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 239000003292 glue Substances 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000003848 UV Light-Curing Methods 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 4
- 238000001723 curing Methods 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 230000002411 adverse Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002562 thickening agent Substances 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- G02F1/133351—Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
Abstract
The invention relates to the technical field of liquid crystal display screen processing, in particular to a secondary cutting process of a liquid crystal display screen, which comprises the following steps: step S1: cutting the upper polaroid; s2, attaching the upper polarizer to the original-size liquid crystal display glass to be cut; s3, binding the liquid crystal glass to be cut to obtain a FOG of a liquid crystal display in an original size; s4, cutting the product by using a double-knife cutting machine, and cutting the FOG of the liquid crystal display at a corresponding position; s5, placing the cut product, and performing glass breaking; s6, gluing and sealing the cut section; s7, curing the glued FOG of the small-size liquid crystal screen; s8, attaching a lower polarizer to the cured small-size liquid crystal display FOG; and S9, carrying out back-end backlight assembly after the liquid crystal display FOG is electrified and aged. The secondary cutting process does not need to cut the polaroid, but directly attaches the cut polaroid; compared with the prior art, the method reduces adverse risks.
Description
Technical Field
The invention relates to the technical field of liquid crystal display screen processing, in particular to a secondary cutting process for a liquid crystal display screen.
Background
When a liquid crystal panel is manufactured, a secondary cutting is often required after a primary cutting according to actual size requirements.
However, the currently used secondary cutting process has the following disadvantages:
1: the production efficiency is low, and the polaroid needs to be cut firstly and then cut;
2: the production yield is low, the polaroid is cut in a laser mode, liquid crystals near the cross section change color due to high laser temperature, and the yield is only about 80 percent generally;
3: the return rate is high because the conventional UV glue on the market has certain corrosiveness, and the return rate is 3-5% at the market end.
Disclosure of Invention
The invention aims to provide a secondary cutting process for a liquid crystal display screen, which aims to achieve the purposes of improving the production efficiency and the production yield and solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a secondary cutting process for a liquid crystal display screen comprises the following steps:
step S1: cutting the polarizer according to the required cut size;
s2, attaching the cut upper polarizer to the original-size liquid crystal display glass to be cut;
s3, binding the liquid crystal glass to be cut to obtain a FOG of the original-size liquid crystal screen;
s4, cutting the product by using a double-knife cutting machine, and cutting the FOG of the liquid crystal display at a corresponding position;
s5, placing the cut product, and performing glass breaking to obtain a small-size cut FOG;
s6, gluing and sealing the cut section by using UV glue;
s7, curing the coated small-size liquid crystal display FOG;
s8, attaching a lower polarizer on the cured FOG of the small-size liquid crystal display
And S9, carrying out 24-hour power-on aging on the small-size liquid crystal screen FOG, and then carrying out back-end backlight assembly to obtain the final liquid crystal display module.
Preferably, the liquid crystal glass to be cut in the step S3 is bound with an IC and an FPC.
Preferably, the double-blade cutting machine used in the step S4 is provided with an upper blade and a lower blade, and the effect that liquid crystal of the product does not leak is achieved through setting the pressure and the depth in the cutting process.
Preferably, the product cut in the step S5 is left for 8 to 15 minutes.
Preferably, the UV glue used in step S6 is a silicon-based UV glue doped with a thickening agent.
Preferably, the liquid crystal panel FOG in the step S7 is cured in a UV curing device.
Compared with the prior art, the invention has the beneficial effects that:
1. the main process and the matching process of laser slicing are reduced, and the production efficiency is improved by 20% from 500 pieces/hour to 600 pieces/hour.
2. The invention reduces the reject ratio caused by laser slicing, improves the through yield of the product from 80 percent to 95 percent, and improves the through yield by 18.8 percent.
3. The return rate is reduced, and the after-sale reject ratio is reduced from 3 percent to 0.5 percent.
4. The invention optimizes the working procedures, thereby reducing the equipment and the production difficulty, and 3 persons can carry out batch production.
Drawings
FIG. 1 is a schematic view of a liquid crystal glass and an upper polarizer before cutting according to the present invention.
FIG. 2 is a schematic view of a glass-attached polarizer according to the present invention.
FIG. 3 is a schematic view of a liquid crystal panel FOG according to the present invention.
FIG. 4 is a FOG of a cut liquid crystal display panel according to the present invention.
FIG. 5 shows a FOG of a liquid crystal display panel after the sheet is broken.
FIG. 6 is a schematic view of a liquid crystal display module after processing according to the present invention.
Detailed Description
The present invention is further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below may be arbitrarily combined to form a new embodiment without conflict, and it should be understood that the described embodiments are only a part of the embodiments, but not all embodiments of the present invention. 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.
Referring to fig. 1 to 6, the present invention provides a technical solution: a secondary cutting process for a liquid crystal display screen comprises the following steps:
step S1: cutting the polarizer according to the required cut size;
s2, attaching the cut upper polarizer to the original-size liquid crystal display glass to be cut;
s3, binding the liquid crystal glass to be cut with IC and FPC to obtain an original-size liquid crystal display FOG;
s4, cutting the product by using a double-knife cutting machine, and cutting the FOG of the liquid crystal display at a corresponding position;
s5, placing the cut product for 8-15 minutes, and performing glass breaking to obtain a small-size cut liquid crystal display FOG;
s6, gluing and sealing the cut section by using UV glue;
s7, curing the coated small-size liquid crystal display FOG in UV curing equipment;
s8, attaching a lower polarizer on the cured FOG of the small-size liquid crystal display
And S9, carrying out 24-hour power-on aging on the small-size liquid crystal screen FOG, and then carrying out back-end backlight assembly to obtain the final liquid crystal display module.
The used double-knife cutting machine is provided with an upper knife head and a lower knife head, and the effect that liquid crystal of a product is not leaked is achieved through the pressure and depth setting in the cutting process.
The main component of the UV adhesive is silicon UV adhesive, and a certain thickening agent is added, so that the UV adhesive can seal and prevent the liquid crystal from being corroded.
The technical process of cutting a 4.3-inch liquid crystal display into 3.9-inch liquid crystal displays is taken as an embodiment, and the processing steps are as follows:
1. cutting the 3.9-inch polarizer according to the cut size, as shown in FIG. 1;
2. attaching the 3.9-inch upper polarizer to the 4.3-inch liquid crystal display glass as shown in FIG. 2;
3. binding the 4.3-inch liquid crystal glass with an IC and an FPC to obtain a 4.3-inch liquid crystal display FOG as shown in figure 3;
4. cutting the product by a double-blade cutting machine with upper and lower cutter heads, and cutting a FOG of a 4.3-inch liquid crystal display screen at a position of 3.9 inches, as shown in FIG. 4;
5. after the cut product is placed for 10 minutes, glass breaking is carried out to obtain a liquid crystal display FOG with the size of 3.9 inches, as shown in figure 5;
6. gluing and sealing the cut section by using UV glue;
7. curing the 3.9-inch liquid crystal display FOG after the glue coating in UV curing equipment;
8. attaching a lower polarizer to the cured 3.9-inch liquid crystal display FOG;
9. and (3) carrying out 24-hour electrifying and aging on the liquid crystal screen FOG, and then carrying out back-end backlight assembly to obtain a 3.9-inch liquid crystal display module, as shown in figure 6.
In the whole cutting process, the cut polaroid is directly attached without cutting the polaroid, and in the prior art, a laser machine is required to slice the polaroid, so that the working procedures are increased, and the adverse risk is increased.
The above embodiments are merely preferred embodiments of the present invention, and the scope of the present invention should not be limited thereto, and those skilled in the art will be able to make various modifications without inventive changes from the above concepts and the scope of the present invention.
Claims (6)
1. A secondary cutting process for a liquid crystal display screen is characterized by comprising the following steps: the cutting process comprises the following steps:
step S1: cutting the polarizer according to the required cut size;
s2, attaching the cut upper polarizer to the original-size liquid crystal display glass to be cut;
s3, binding the liquid crystal glass to be cut to obtain a FOG of the original-size liquid crystal screen;
s4, cutting the product by using a double-knife cutting machine, and cutting the FOG of the liquid crystal display at a corresponding position;
s5, placing the cut product, and performing glass breaking to obtain a small-size cut FOG;
s6, gluing and sealing the cut section by using UV glue;
s7, curing the coated small-size liquid crystal display FOG;
s8, attaching a lower polarizer on the cured FOG of the small-size liquid crystal display
And S9, carrying out 24-hour power-on aging on the small-size liquid crystal screen FOG, and then carrying out back-end backlight assembly to obtain the final liquid crystal display module.
2. The secondary cutting process for the liquid crystal display screen according to claim 1, characterized in that: and in the step S3, the liquid crystal glass to be cut is bound with the FPC and the IC.
3. The secondary cutting process of the liquid crystal display screen according to claim 1, characterized in that: the double-blade cutting machine used in the step S4 is provided with an upper cutter head and a lower cutter head, and the effect that liquid crystal of a product is not leaked is achieved through the pressure and depth setting in the cutting process.
4. The secondary cutting process of the liquid crystal display screen according to claim 1, characterized in that: and the product cut in the step S5 is placed for 8-15 minutes.
5. The secondary cutting process of the liquid crystal display screen according to claim 1, characterized in that: the UV adhesive used in the step S6 is a silicon-based UV adhesive doped with a viscous agent.
6. The secondary cutting process for the liquid crystal display screen according to claim 1, characterized in that: and the liquid crystal screen FOG in the step S7 is cured in a UV curing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211204443.3A CN115453782A (en) | 2022-09-29 | 2022-09-29 | Secondary cutting process for liquid crystal display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211204443.3A CN115453782A (en) | 2022-09-29 | 2022-09-29 | Secondary cutting process for liquid crystal display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115453782A true CN115453782A (en) | 2022-12-09 |
Family
ID=84309358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211204443.3A Pending CN115453782A (en) | 2022-09-29 | 2022-09-29 | Secondary cutting process for liquid crystal display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115453782A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59157616A (en) * | 1983-02-28 | 1984-09-07 | Hitachi Ltd | Cutting method of plastic liquid-crystal display element |
| US6509949B1 (en) * | 1999-12-20 | 2003-01-21 | Honeywell International Inc. | Method of resizing a liquid crystal display |
| US20060109416A1 (en) * | 2004-11-20 | 2006-05-25 | Luxell Technologies Inc. | Method of resizing a liquid crystal display |
| KR20060101189A (en) * | 2005-03-16 | 2006-09-22 | 케이 이엔지(주) | The method and the device for cutting the flat display glass panel, which use the laser |
| WO2013078632A1 (en) * | 2011-11-28 | 2013-06-06 | 深圳市华星光电技术有限公司 | Cutting apparatus and cutting method for liquid crystal panel |
| CN103413503A (en) * | 2013-07-05 | 2013-11-27 | 上海千山光电科技有限公司 | Vehicle by means of liquid crystal display to release information and method for manufacturing liquid crystal display |
| CN103896483A (en) * | 2014-03-27 | 2014-07-02 | 深圳市华星光电技术有限公司 | Glass substrate cutting equipment and cutting method |
| CN106405898A (en) * | 2016-11-30 | 2017-02-15 | 深圳晶华显示器材有限公司 | Method and compression tool for adjusting size and shape of liquid crystal display without opening mould |
| CN106896536A (en) * | 2017-01-24 | 2017-06-27 | 北海星沅电子科技有限公司 | A kind of liquid crystal display panel cutting method |
| CN107216023A (en) * | 2017-02-23 | 2017-09-29 | 深圳市思迪科科技有限公司 | Liquid-crystalline glasses blade cutting machine and cutting method |
-
2022
- 2022-09-29 CN CN202211204443.3A patent/CN115453782A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59157616A (en) * | 1983-02-28 | 1984-09-07 | Hitachi Ltd | Cutting method of plastic liquid-crystal display element |
| US6509949B1 (en) * | 1999-12-20 | 2003-01-21 | Honeywell International Inc. | Method of resizing a liquid crystal display |
| US20060109416A1 (en) * | 2004-11-20 | 2006-05-25 | Luxell Technologies Inc. | Method of resizing a liquid crystal display |
| KR20060101189A (en) * | 2005-03-16 | 2006-09-22 | 케이 이엔지(주) | The method and the device for cutting the flat display glass panel, which use the laser |
| WO2013078632A1 (en) * | 2011-11-28 | 2013-06-06 | 深圳市华星光电技术有限公司 | Cutting apparatus and cutting method for liquid crystal panel |
| CN103413503A (en) * | 2013-07-05 | 2013-11-27 | 上海千山光电科技有限公司 | Vehicle by means of liquid crystal display to release information and method for manufacturing liquid crystal display |
| CN103896483A (en) * | 2014-03-27 | 2014-07-02 | 深圳市华星光电技术有限公司 | Glass substrate cutting equipment and cutting method |
| CN106405898A (en) * | 2016-11-30 | 2017-02-15 | 深圳晶华显示器材有限公司 | Method and compression tool for adjusting size and shape of liquid crystal display without opening mould |
| CN106896536A (en) * | 2017-01-24 | 2017-06-27 | 北海星沅电子科技有限公司 | A kind of liquid crystal display panel cutting method |
| CN107216023A (en) * | 2017-02-23 | 2017-09-29 | 深圳市思迪科科技有限公司 | Liquid-crystalline glasses blade cutting machine and cutting method |
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