Method for manufacturing liquid crystal display element

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United States of America Patent

PATENT NO 8591690
APP PUB NO 20100236702A1
SERIAL NO

12715079

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for manufacturing a liquid crystal display element is provided which simultaneously achieves the object of cutting an optical film without causing degradation in appearance and the object of preventing the film from being broken in a continuous bonding process, and includes: providing a long sheet material including a laminate of an optical film containing a polarizer, a pressure-sensitive adhesive layer, and a carrier film temporarily bonded to the pressure-sensitive adhesive layer; cutting the long sheet material at predetermined intervals, while maintaining the continuity of the carrier film; peeling off the carrier film by a tensile force; and continuously bonding the resulting optical film pieces to liquid crystal panels, respectively, through the pressure-sensitive adhesive layer exposed by the peeling off, while feeding the resulting optical film pieces, wherein the cutting is performed to such a depth as to substantially reach the carrier film, and the carrier film is cut to a depth less than half of the thickness of the carrier film at least both end portions in the width direction of the carrier film.

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Patent Owner(s)

  • NITTO DENKO CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakazono, Takuya Ibaraki, JP 80 1495
Sugimoto, Yuu Ibaraki, JP 39 177
Umemoto, Seiji Ibaraki, JP 126 2014

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