CN102690066B - Fixing method of glass substrate - Google Patents
Fixing method of glass substrate Download PDFInfo
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- CN102690066B CN102690066B CN201110069922.4A CN201110069922A CN102690066B CN 102690066 B CN102690066 B CN 102690066B CN 201110069922 A CN201110069922 A CN 201110069922A CN 102690066 B CN102690066 B CN 102690066B
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- Prior art keywords
- glass substrate
- sided tape
- glass
- acrylate double
- annealing
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- 239000011521 glass Substances 0.000 title claims abstract description 137
- 239000000758 substrate Substances 0.000 title claims abstract description 137
- 238000000034 method Methods 0.000 title claims abstract description 42
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 43
- 238000000137 annealing Methods 0.000 claims abstract description 37
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229920002120 photoresistant polymer Polymers 0.000 claims description 3
- 239000005347 annealed glass Substances 0.000 claims description 2
- 238000007796 conventional method Methods 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 8
- 239000002390 adhesive tape Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a fixing method of a glass substrate. The method comprises: attaching an acrylate double-sided tape to an edge position corresponding to that of a second glass substrate on a first glass substrate; attaching the second glass substrate to the first glass substrate; and conducting annealing treatment on the two glass substrates. According to the technical solution of the invention, rapid fixing of an ultra-thin glass substrate and a thick glass substrate can be realized so as to achieve processing of ultra-thin glass.
Description
Technical Field
The invention relates to a preparation technology of a flexible display device, in particular to a fixing method of a glass substrate.
Background
With the rapid development of flat panel Display technology in the last decade, the performance of Liquid Crystal Display (LCD) has reached the level of conventional Cathode Ray Tube (CRT) Display, and there is a trend to replace CRT Display.
With the continuous expansion of the production scale of the flat panel display products, the competition among manufacturers is intensified, and each manufacturer continuously strives to reduce the production cost of the flat panel display products while continuously improving the performance of the flat panel display products, so as to improve the market competitiveness of the manufacturers. The flexible display device has a characteristic of being bendable, and thus can be used in many fields requiring a curved display, such as smart cards, electronic papers, smart labels, and all fields to which conventional displays are applied, and in the market of future flat panel display products, the flexible display device will occupy a huge market share by virtue of its fantastic and beautiful appearance.
In the prior art, flexible display devices are mainly based on display devices prepared on organic material substrates, such as organic thin films of polyimide, polyethylene terephthalate, and the like, and cholesteric liquid crystal displays, electrophoretic displays, organic electroluminescent displays, and the like prepared on composite thin films of organic thin films. The glass substrate has more excellent transmittance, chemical stability, water-blocking property and dielectric property than organic materials, and the ultrathin glass substrate also has good flexibility; however, the glass substrate has a very limited application to large-area flat panel display products due to the fragility of the glass substrate itself, and it is difficult to separately handle and process ultra-thin glass.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a method for fixing a glass substrate, which realizes fast fixing of an ultra-thin glass substrate and a thicker glass substrate, so as to realize processing of ultra-thin glass.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a method for fixing a glass substrate, which comprises the following steps:
attaching an acrylate double-sided tape to the edge position of the first glass substrate corresponding to the second glass substrate;
attaching a second glass substrate to the first glass substrate;
and annealing the two glass substrates.
In the method, the attaching of the acrylate double-sided tape to the edge position of the first glass substrate corresponding to the second glass substrate is as follows:
and attaching an acrylate double-sided tape with the width of 5mm to 20mm on the first glass substrate corresponding to the edge position of the second glass substrate.
In the method, the thickness of the first glass substrate is not less than 0.4mm, and the thickness of the second glass substrate is not more than 0.1 mm.
In the above method, the annealing treatment of the two glass substrates comprises:
placing the attached first glass substrate and second glass substrate in an oven or a vacuum annealing furnace for annealing treatment; wherein the temperature of the oven or the vacuum annealing furnace is 160 ℃ to 190 ℃, and the time of the annealing treatment is 10 to 15 minutes.
In the above method, the method further comprises:
and cooling the two annealed glass substrates to room temperature to prepare the flexible display device.
In the above method, after the two glass substrates to be annealed are cooled to room temperature, the flexible display device is prepared by:
and taking the first glass substrate and the second glass substrate which are subjected to annealing treatment out of the oven or the vacuum annealing furnace, and after the two glass substrates are cooled to room temperature, preparing the flexible display device according to the traditional method.
In the above method, the manufacturing of the flexible display device according to the conventional method is:
and depositing a metal layer on the second glass substrate, performing mask exposure treatment on the two glass substrates, performing etching treatment, and finally performing photoresist stripping treatment.
In the above method, the method further comprises: softening the attached acrylate double-sided tape, and separating the first glass substrate from the second glass substrate.
In the method, the softening treatment of the attached acrylate double-sided tape comprises the following steps:
and soaking the two glass substrates attached with the acrylate double-sided tape by using acetone or 3M degumming agent, and softening the attached acrylate double-sided tape by using the acetone or 3M degumming agent.
The invention provides a fixing method of a glass substrate, which is characterized in that an acrylate double-sided tape is attached to the edge position of a first glass substrate corresponding to a second glass substrate; attaching a second glass substrate to the first glass substrate; annealing the two glass substrates, using the acrylate double-sided tape as a bonding material of the first glass substrate and the second glass substrate, and using the method to process the two glass substrates, so that the acrylate double-sided tape can be rapidly melted, the two glass substrates can be rapidly fixed, bubbles can be discharged in the rapid melting process of the acrylate double-sided tape, and linear gaps in the corner area of the acrylate double-sided tape can be filled, so that the glass substrates can have good blocking effect on strong acid, strong alkali, organic solvent and the like; when the method is applied to the preparation of the flexible display device, the yield and the productivity of the product can be improved, so that the competitiveness of the product is improved.
Drawings
FIG. 1 is a schematic flow chart of a method for fixing a glass substrate according to the present invention;
FIG. 2 is a schematic cross-sectional view of a first glass substrate attached to a second glass substrate;
FIG. 3 is a schematic cross-sectional view of a corner region after attaching a first glass substrate and a second glass substrate;
FIG. 4 is a schematic cross-sectional view of a corner region of a first glass substrate after annealing a second glass substrate.
Detailed Description
The manufacturing process of the display device needs to be soaked by organic solvents such as high temperature of more than 300 ℃, strong acid, strong base, isopropanol and the like, so that the adhesive material needing to be attached has certain capacity of resisting the high temperature, the strong acid, the strong base and the organic solvents. The acrylate is one of materials capable of resisting severe environments such as high temperature, strong acid, strong base, organic solvent and the like in a certain time, and can provide high bonding strength, but the double-sided adhesive tape prepared by using the acrylate contains a large amount of bubbles, if the double-sided adhesive tape is directly used for bonding two glass substrates, liquid easily permeates between the glass substrates through the bubbles in the preparation process of a display device, so that the fluctuation of the middle position of the ultrathin glass substrate is uneven under the high-temperature or vacuum environment, the product performance is influenced, and even the glass substrate is seriously damaged to damage the display device; in addition, the double-sided adhesive tape prepared by using the acrylate generates a linear gap in a corner area due to the thickness of the adhesive tape, and a liquid medicine can also penetrate through the linear gap to enter between two glass substrates through the capillary action in the preparation process of a display device, and based on the physical property and the chemical property of the acrylate, the double-sided adhesive tape prepared by using the acrylate is used as a bonding material to realize a fixing method of the glass substrates, and the basic idea is as follows: attaching an acrylate double-sided tape to the edge position of the first glass substrate corresponding to the second glass substrate; attaching a second glass substrate to the first glass substrate; and annealing the two glass substrates.
The invention is further described in detail below with reference to the drawings and the specific embodiments.
The invention provides a fixing method of a glass substrate, fig. 1 is a flow chart schematic diagram of the fixing method of the glass substrate, as shown in fig. 1, the method comprises the following steps:
101, attaching an acrylate double-sided tape to the edge position of the first glass substrate corresponding to the second glass substrate;
specifically, fig. 2 is a schematic cross-sectional view of a first glass substrate attached to a second glass substrate, fig. 3 is a schematic cross-sectional view of a corner region of the first glass substrate attached to the second glass substrate, and as shown in fig. 2 and 3, an acrylate double-sided tape having a width of 5mm to 20mm is attached to a position on the first glass substrate corresponding to an edge of the second glass substrate; the first glass substrate is a thicker glass substrate, the thickness of the first glass substrate is more than or equal to 0.4mm, the second glass substrate is an ultrathin glass substrate, and the thickness of the second glass substrate is less than or equal to 0.1 mm; the acrylate double-sided tape is a double-sided tape made of acrylate, such as VHB series tape of 3M company; here, as shown in fig. 3, after the acrylate double-sided tape is attached to the first glass substrate, a linear gap exists in the corner region, and air bubbles exist in the acrylate double-sided tape.
Step 102, attaching a second glass substrate to the first glass substrate.
103, annealing the two glass substrates;
specifically, the first glass substrate and the second glass substrate which are attached are placed in an oven or a vacuum annealing furnace for annealing treatment; wherein the temperature of the oven or the vacuum annealing furnace is 160 ℃ to 190 ℃, and the annealing treatment time is 10 minutes to 15 minutes; here, the annealing treatment using the vacuum annealing furnace increases the speed of discharging bubbles in the acrylate double-sided adhesive tape;
fig. 4 is a schematic cross-sectional view of a corner region of the first glass substrate and the second glass substrate after annealing, as shown in fig. 4, after annealing, the original air bubbles in the acrylate double-sided tape are completely discharged due to softening of the acrylate double-sided tape during annealing, and the linear gaps in the original corner region of the acrylate double-sided tape are also completely filled with the acrylate double-sided tape;
here, if the annealing temperature is too high, the acrylate double-sided tape may be discolored or bubbles may be separated or cracks may be generated, and if the annealing temperature is too low, the acrylate double-sided tape may not be completely softened or may have a poor softening effect, such that a liquid may infiltrate between the first glass substrate and the second glass substrate when the flexible display device is manufactured; if the annealing treatment time is too long, not only the softening effect is not greatly affected, but also the productivity is affected, so the above-mentioned annealing treatment time length and oven temperature are preferable.
104, cooling the two glass substrates to room temperature after annealing treatment, and preparing a flexible display device;
specifically, the first glass substrate and the second glass substrate after annealing treatment are taken out of an oven or a vacuum annealing furnace, after the two glass substrates are cooled to room temperature, the whole fixing procedure of the first glass substrate and the second glass substrate is completed, and then the flexible display device is prepared according to the traditional method; in practical application, the room temperature is 15-30 ℃, and the room temperature is preferably 23 ℃;
the flexible display device prepared according to the traditional method comprises the following steps: depositing a metal layer on a second glass substrate, performing mask exposure treatment on the two glass substrates, performing etching treatment, and finally performing photoresist stripping treatment, wherein the process is repeated for 4 to 6 times.
105, softening the attached acrylate double-sided tape, and separating the first glass substrate from the second glass substrate;
specifically, the two glass substrates to which the acrylate double-sided tape is attached are soaked in acetone or a 3M degumming agent, so that the acetone or the 3M degumming agent can soften the attached acrylate double-sided tape; after the attached acrylate double-sided tape is softened, the first glass substrate may be separated from the second glass substrate.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (9)
1. A method for fixing a glass substrate, comprising:
attaching an acrylate double-sided tape to the edge position of the first glass substrate corresponding to the second glass substrate;
attaching a second glass substrate to the first glass substrate;
annealing the two glass substrates; wherein,
the annealing treatment of the two glass substrates comprises the following steps: placing the attached first glass substrate and second glass substrate in a vacuum annealing furnace for annealing treatment; wherein the temperature of the vacuum annealing furnace is 160 ℃ to 190 ℃.
2. The method according to claim 1, wherein the attaching of the acrylate double-sided tape on the first glass substrate at the edge position corresponding to the second glass substrate is:
and attaching an acrylate double-sided tape with the width of 5mm to 20mm on the first glass substrate corresponding to the edge position of the second glass substrate.
3. The method according to claim 1 or 2, wherein the first glass substrate has a thickness of 0.4mm or more and the second glass substrate has a thickness of 0.1mm or less.
4. The method of claim 1, wherein the annealing is performed for a period of 10 to 15 minutes.
5. The method of claim 1, further comprising:
and cooling the two annealed glass substrates to room temperature to prepare the flexible display device.
6. The method according to claim 5, wherein after the two glass substrates to be annealed are cooled to room temperature, the flexible display device is prepared by:
and taking the first glass substrate and the second glass substrate which are subjected to annealing treatment out of the oven or the vacuum annealing furnace, and after the two glass substrates are cooled to room temperature, preparing the flexible display device according to the traditional method.
7. A method according to claim 6, wherein the manufacturing of the flexible display device according to conventional methods is:
and depositing a metal layer on the second glass substrate, performing mask exposure treatment on the two glass substrates, performing etching treatment, and finally performing photoresist stripping treatment.
8. The method of claim 5, further comprising: softening the attached acrylate double-sided tape, and separating the first glass substrate from the second glass substrate.
9. The method as claimed in claim 8, wherein the softening treatment of the attached acrylate double-sided tape is:
and soaking the two glass substrates attached with the acrylate double-sided tape by using acetone or 3M degumming agent, and softening the attached acrylate double-sided tape by using the acetone or 3M degumming agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110069922.4A CN102690066B (en) | 2011-03-22 | 2011-03-22 | Fixing method of glass substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110069922.4A CN102690066B (en) | 2011-03-22 | 2011-03-22 | Fixing method of glass substrate |
Publications (2)
| Publication Number | Publication Date |
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| CN102690066A CN102690066A (en) | 2012-09-26 |
| CN102690066B true CN102690066B (en) | 2015-02-25 |
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| CN201110069922.4A Active CN102690066B (en) | 2011-03-22 | 2011-03-22 | Fixing method of glass substrate |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102637577B (en) * | 2011-04-02 | 2015-08-05 | 京东方科技集团股份有限公司 | A kind of preparation method of display device |
| CN104445976A (en) * | 2014-12-03 | 2015-03-25 | 上海天马微电子有限公司 | Thinning process method of glass substrate |
| CN104702144A (en) * | 2015-04-03 | 2015-06-10 | 京东方科技集团股份有限公司 | Friction generator, friction power generation device and display device |
| CN105967528A (en) * | 2016-05-09 | 2016-09-28 | 惠晶显示科技（苏州）有限公司 | Method for thinning liquid crystal display panel with thickness less than 200 micrometers |
| CN106970480A (en) * | 2017-04-14 | 2017-07-21 | 精电(河源)显示技术有限公司 | A kind of production process of flexible liquid crystal display |
| CN107357064A (en) * | 2017-06-14 | 2017-11-17 | 合肥市惠科精密模具有限公司 | A kind of fixing means of TFT LCD glass substrates |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1476048A (en) * | 2002-07-25 | 2004-02-18 | ��ʽ����뵼����Դ�о��� | Lighting device mfg. method |
| CN1729726A (en) * | 2002-12-25 | 2006-02-01 | 株式会社半导体能源研究所 | Light-emitting apparatus and method for manufacturing same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004079432A (en) * | 2002-08-21 | 2004-03-11 | Nitto Denko Corp | Transparent gas barrier member and organic electroluminescent element using it |
| EP2273475A1 (en) * | 2008-04-17 | 2011-01-12 | Asahi Glass Company, Limited | Glass laminate, display panel with support, method for producing glass laminate and method for manufacturing display panel with support |
| EP2315500A4 (en) * | 2008-07-08 | 2011-12-28 | Nitto Denko Corp | Process for producing organic electroluminescent panel |
| CN101738774B (en) * | 2008-11-06 | 2013-08-28 | 苏州海博智能系统有限公司 | Ultrathin flexible liquid crystal display and manufacturing method thereof |
| CN101851485B (en) * | 2010-05-18 | 2014-04-16 | 上海鼎道科技发展有限公司 | Light-curing adhesive used for adhering facade glass and preparation method thereof |
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- 2011-03-22 CN CN201110069922.4A patent/CN102690066B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1476048A (en) * | 2002-07-25 | 2004-02-18 | ��ʽ����뵼����Դ�о��� | Lighting device mfg. method |
| CN1729726A (en) * | 2002-12-25 | 2006-02-01 | 株式会社半导体能源研究所 | Light-emitting apparatus and method for manufacturing same |
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| CN102690066A (en) | 2012-09-26 |
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