Title:
METHOD FOR PRODUCING POLARIZING PLATE, POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/137858
Kind Code:
A1
Abstract:
Provided are: a method for efficiently producing a polarizing plate which is free from entrance of air bubbles, which are large enough to deteriorate the quality of the polarizing plate, into an adhesive layer; a polarizing plate that is produced by the method; and a liquid crystal display device wherein the polarizing plate is bonded to a liquid crystal panel. The method for producing a polarizing plate comprises: a bonding step wherein a polarizing plate having at least one adhesive layer is obtained by bonding a polarizing film and at least a protective film with each other with an adhesive layer being interposed therebetween; and an air bubble reduction step wherein the polarizing plate is heated at 400-800 kPa in an atmosphere of 50-80˚C. Consequently, a polarizing plate which is free from entrance of air bubbles into an adhesive layer can be efficiently produced, so that the productivity and the yield of the polarizing plate can be increased.
Inventors:
DEGUCHI NOBUO
KURAMOTO TOSHITAKA
KURAMOTO TOSHITAKA
Application Number:
PCT/JP2012/059310
Publication Date:
October 11, 2012
Filing Date:
April 05, 2012
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
DEGUCHI NOBUO
KURAMOTO TOSHITAKA
DEGUCHI NOBUO
KURAMOTO TOSHITAKA
International Classes:
G02B5/30; C09J201/00; G02F1/1335
Foreign References:
| JP2010191203A | 2010-09-02 | |||
| JP2004302476A | 2004-10-28 | |||
| JP2010256757A | 2010-11-11 | |||
| JP2010250091A | 2010-11-04 | |||
| JP2011043800A | 2011-03-03 | |||
| JP2010209126A | 2010-09-24 | |||
| JP2011022202A | 2011-02-03 | |||
| JPS55140817A | 1980-11-04 | |||
| JP2009237202A | 2009-10-15 |
Attorney, Agent or Firm:
HASEGAWA, Kazuya et al. (JP)
Kazuya Hasegawa (JP)
Kazuya Hasegawa (JP)
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Claims: