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Sealant for liquid crystal, liquid-crystal display made with the same, and process for produicng the display

A liquid crystal display device, liquid crystal sealant technology, applied in the direction of instruments, nonlinear optics, optics, etc., can solve the problems of insufficient operability, poor adhesion, high viscosity, etc., to shorten the time of alignment steps, resin Effect of low viscosity and low resin viscosity

Inactive Publication Date: 2008-08-27
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since these liquid crystal sealants disclosed in Patent Document 1 have high viscosity after precuring, the operability of alignment after substrate lamination is insufficient; or, their adhesiveness after precuring is poor, Therefore, the upper and lower substrates may slip during vacuum clamping type transfer operations

Method used

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  • Sealant for liquid crystal, liquid-crystal display made with the same, and process for produicng the display
  • Sealant for liquid crystal, liquid-crystal display made with the same, and process for produicng the display
  • Sealant for liquid crystal, liquid-crystal display made with the same, and process for produicng the display

Examples

Experimental program
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Effect test

Embodiment 1

[0101] 100 g of the epoxy resin represented by the formula (1) (RE-600NM, produced by Nippon Kayaku Co. Ltd., which contains 65 to 80 wt % of the compound of n=0 in the formula (1)) and 30 g of the curing agent containing 30 The phenol novolac resin (PN-152, manufactured by Nippon Kayaku Co.Ltd.) of ~50wt% bicyclic compound is heated and dissolved in 10g RHODIASOLVE RPDE (containing 57~63wt% dimethyl glutarate, 21~27wt% % dimethyl succinate, 12-20 wt% dimethyl adipate, manufactured by Rhodia Nikka Co.). In the obtained resin solution, 60 g of spherical alumina (NANOTEC ALUMINA SP-C, manufactured by CI Kasei Co. Ltd.) having an average particle diameter of about 30 nm as an inorganic filler and 10 g of N-phenyl-γ-aminopropyltrimethoxysilane, disperse them in the resin solution, and then add 8 g of AMICURE MYH-K (amine adduct: Ajinomoto Fine Techno Co. Ltd.) to obtain the liquid crystal sealing compound of the present invention.

Embodiment 2

[0127] (1) Synthetic liquid crystal sealant

[0128] 100 g of the epoxy resin represented by the formula (1) (RE-600NM, produced by Nippon Kayaku Co. Ltd., which contains 65 to 80 wt % of the compound of n=0 in the formula (1)) and 30 g of the curing agent containing 30 The phenol novolac resin (PN-152, manufactured by Nippon Kayaku Co.Ltd.) of ~50wt% bicyclic compound is heated and dissolved in 10g RHODIASOLVE RPDE (1013.25hPa lower boiling point is 200-230 DEG C, 20 DEG C vapor pressure 6Pa; containing 57-63wt% dimethyl glutarate, 21-27wt% dimethyl succinate and 12-20wt% dimethyl adipate; manufactured by Rhodia Nikka Co. Ltd.). In the obtained resin solution, 60 g of spherical alumina (NANOTEC ALUMINA SP-C, manufactured by CI Kasei Co. Ltd.) having an average particle diameter of about 30 nm as an inorganic filler and 10 g of N-phenyl-γ-aminopropyltrimethoxysilane, disperse them in the resin solution, and then add 8 g of AMICURE MYH-K (amine adduct: Ajinomoto Fine Techno C...

Embodiment 3

[0147] (1) Synthetic liquid crystal sealant

[0148] With 30g of the epoxy resin represented by the formula (1) (RE-600NM, manufactured by Nippon Kayaku Co.Ltd., which contains 65 to 80% by weight of the compound of n=0 in the formula (1), 70g of bisphenol A type epoxy Resin (RE-310S, manufactured by Nippon Kayaku Co. Ltd.) and 30 g of phenol novolac resin (PN-152, manufactured by Nippon Kayaku Co. Ltd.) containing 30 to 50 wt% of a compound having a bicyclic ring as a curing agent were heated and dissolved In 7 g of RHODIASOLVERPDE (containing 57 to 63% by weight of dimethyl glutarate, 21 to 27% by weight of dimethyl succinate and 12 to 20% by weight of dimethyl adipate; manufactured by Rhodia Nikka Co. Ltd.) as a solvent and 3 g of ethylene glycol dibutyl ether (manufactured by Wako Jun-Yaku Kogyo Co. Ltd.).

[0149] In the obtained resin solution, 25 g of amorphous alumina (ALUMICRON FAL-0.05B, manufactured by Fujimi Incorporated) having an average particle diameter of abo...

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Abstract

A liquid crystal sealant comprising an epoxy resin represented by the following formula (1): (in the formula, n denotes an average polymerization degree and is a positive number of 0-5) as a resin component, a curing agent, a curing accelerator and an inorganic filler is excellent in screen printability as a liquid crystal sealant in making a liquid crystal display device and can provide excellent reliability in moisture resistance for the liquid crystal display device obtained).

Description

technical field [0001] The present invention relates to a liquid crystal sealant, a liquid crystal display device using the liquid crystal sealant and a method for manufacturing the display device. More particularly, the present invention relates to a heat-curable liquid crystal sealant which has excellent screen printability in the manufacture of a liquid crystal display device and which can provide a liquid crystal display device with high reliability against moisture; the present invention It also relates to a liquid crystal display device manufactured by using the sealant and a method for manufacturing the display device. Background technique [0002] In the process of manufacturing liquid crystal display devices using heat-curable liquid crystal sealants, the upper and lower substrates are laminated together by the following method: This method includes sealing the liquid crystal with a dispenser or a method such as screen printing. An adhesive is applied to the substr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1339
Inventor 坂野常俊林原昌一赤塚泰昌平野雅浩冈崎敢松本俊宽和歌伸浩西脇章刚
Owner SHARP KK