CN1095823A - Used for liquid crystal display device sealant and encapsulating method - Google Patents
Used for liquid crystal display device sealant and encapsulating method Download PDFInfo
- Publication number
- CN1095823A CN1095823A CN 93106179 CN93106179A CN1095823A CN 1095823 A CN1095823 A CN 1095823A CN 93106179 CN93106179 CN 93106179 CN 93106179 A CN93106179 A CN 93106179A CN 1095823 A CN1095823 A CN 1095823A
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- China
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- liquid crystal
- crystal display
- display device
- encapsulating method
- sealant
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a kind of used for liquid crystal display device sealant and encapsulating method.Be characterized in that sealing is good, do not destroy the liquid crystal molecule structure of liquid crystal display displays district periphery, guarantee the structural parameters and the display quality of liquid crystal display device.
Description
This invention is mainly used in the various types of liquid crystal display devices of sealing, belongs to heterocyclic polymer class polyaddition type polyimide material in the technologic new purposes of liquid crystal display device.
At present, in the liquid crystal display device industrial community, epoxide-resin glue is widely used for encapsulated liquid crystals box (" state-of-the-art technology-material of liquid crystal, rerum natura and application " pine this positive, the Jiao Tian city is very outstanding).With regard to itself, adhesive property is good, and curing rate is fast.Yet be used for the shortcoming that the encapsulated liquid crystals box has himself to overcome.Because of the hardening agent in the epoxide-resin glue and thinning agent itself are participated in reaction, solidify the residual volume of back hardening agent, its reactive group can destroy the end group or the center bridged bond of liquid crystal molecule, liquid crystal cell is got muddled near near the Liquid Crystal Molecules Alignment the fluid sealant, even make liquid crystal rotten, thereby influence the display quality and the serviceable life of LCD; Acid anhydride type curing agent chemical-resistant reagent and weather-proof aging are not ideal enough, and the resin after the sclerosis especially is subject to the erosion of alkali.On the other hand, a small amount of gas of can overflowing during the non-activated thinner sclerosis increases the resin shrinkage rate, when consumption is big, causes that solidifying rerum natura changes, and reduces bounding force, and reactive diluent is shorter because of carbon bond, hinders the formation of epoxy bond.The above factor all influences the performance of epoxy resin, thereby influences the structural parameters and the display quality of liquid crystal display device.
The purpose of this invention is to provide a kind of bounding force and shape good stability, solidification process does not produce volatile matter, encapsulating method that shrinkage factor is little and sealant.
For this reason, the present invention adopts polyaddition type polyimide seal liquid crystal cell (as M type PI, PDA type PI).Technical scheme is:
With dimethyl formamide (DMF) is solvent, the polyimide solution of preparation 1%-20% concentration, method with serigraphy is coated in it on electrode base sheet opposed faces frame, put into 70 ℃ of-110 ℃ of baking oven preliminary drying 10-30min, to reduce the flowability of glue, take out the envelope box then, the curing mold of packing into, its pressure are 3-10Kg/cm
2(the pressurization purpose is to make adhesion coating closely paste the jail, does not produce distortion simultaneously, reaches the purpose of sealed frame), put into high temperature oven together with mould, 30min is warming up to rapidly about 290 ℃, and keeps 60-180min under this temperature, make the glue full solidification, take out behind the natural cooling.
This method
1. encapsulant is single, do not influence the physical property of liquid crystal material, also not destroying liquid crystal molecule structure and liquid crystal material generation chemical reaction makes it rotten or make the Liquid Crystal Molecules Alignment disorder, thereby the peripheral liquid crystal molecule performance that contacts fluid sealant for a long time is interference-free, has guaranteed the display performance and the life-span of liquid crystal;
2. the bonding agent proportioning is simple, and good manufacturability can be used as the sealing of the above bondline thickness liquid crystal cell of 2um, and seal operation is easy to realize simultaneously, has improved the yield rate of liquid crystal cell.
Now in conjunction with the embodiments the present invention is explained in detail.
Prepare 5% polyimide solution, the serigraphy by 8um places 80 ℃ of baking oven preliminary drying 20min on the glass substrate frame, and the envelope box is used 6Kg/cm then
2Mould fix, put into high temperature oven, in 30min, heat up 290 ℃ rapidly, keep 90min.The liquid crystal cell frame of good seal is neat, even, and shearing strength is 18.9MPa, and box is thick to be 8.2um.Inject liquid crystal, making alive, image clear display.
Claims (1)
1, a kind of liquid crystal display device encapsulating method uses serigraphy on electrode base sheet opposed faces frame sealant, it is characterized in that with the polyaddition type polyimide be sealant, and the preliminary drying temperature is 70 ℃-110 ℃, and the time is 10-30min, uses 3-10Kg/cm
2The fixing liquid crystal cell of mould, in 30min, be warming up to 290 ℃ rapidly, keep this temperature, solidify 60-180min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93106179 CN1095823A (en) | 1993-05-28 | 1993-05-28 | Used for liquid crystal display device sealant and encapsulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93106179 CN1095823A (en) | 1993-05-28 | 1993-05-28 | Used for liquid crystal display device sealant and encapsulating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1095823A true CN1095823A (en) | 1994-11-30 |
Family
ID=4986103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93106179 Pending CN1095823A (en) | 1993-05-28 | 1993-05-28 | Used for liquid crystal display device sealant and encapsulating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1095823A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7342639B2 (en) | 2002-12-30 | 2008-03-11 | Lg.Philips Lcd Co., Ltd. | Fabrication method of liquid crystal display panel and seal pattern forming device using the same |
| CN111983836A (en) * | 2020-08-17 | 2020-11-24 | 武汉华星光电技术有限公司 | Array substrate and liquid crystal display panel |
| US11360359B2 (en) | 2020-08-17 | 2022-06-14 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Array substrate and liquid crystal display panel |
-
1993
- 1993-05-28 CN CN 93106179 patent/CN1095823A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7342639B2 (en) | 2002-12-30 | 2008-03-11 | Lg.Philips Lcd Co., Ltd. | Fabrication method of liquid crystal display panel and seal pattern forming device using the same |
| CN100374915C (en) * | 2002-12-30 | 2008-03-12 | Lg.菲利浦Lcd株式会社 | Method for producing liquid crystal display plate |
| US7528927B2 (en) | 2002-12-30 | 2009-05-05 | Lg Display Co., Ltd. | Fabrication method of liquid crystal display panel and seal pattern forming device using the same |
| CN111983836A (en) * | 2020-08-17 | 2020-11-24 | 武汉华星光电技术有限公司 | Array substrate and liquid crystal display panel |
| WO2022036743A1 (en) * | 2020-08-17 | 2022-02-24 | 武汉华星光电技术有限公司 | Array substrate and liquid crystal display panel |
| US11360359B2 (en) | 2020-08-17 | 2022-06-14 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Array substrate and liquid crystal display panel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |