Title:
POLARIZING PLATE, LIQUID CRYSTAL DISPLAY DEVICE, METHOD FOR PRODUCING LIQUID CRYSTAL DISPLAY DEVICE, AND POLYVINYL ALCOHOL-BASED POLARIZING FILM
Document Type and Number:
WIPO Patent Application WO/2019/044741
Kind Code:
A1
Abstract:
Provided are: a high-quality polyvinyl alcohol-based polarizing plate which has excellent thermal durability and excellent polarization performance in a balanced manner; a liquid crystal display device which is provided with this polarizing plate; a method for producing this liquid crystal display device; and a polyvinyl alcohol-based polarizing film which is used in the polarizing plate. This polarizing plate is provided with: a polyvinyl alcohol-based polarizing film that has a glass transition temperature of 95°C or higher; and a protective film that is provided on at least one surface of the polyvinyl alcohol-based polarizing film. This liquid crystal display device is obtained by laminating this polarizing plate and an image display device. In a method for producing this liquid crystal display device according to the present invention, a laminate of an image display device and a polarizing plate having a polyvinyl alcohol-based polarizing film that has a glass transition temperature of less than 95°C is subjected to a dry treatment, so that the glass transition temperature of the polyvinyl alcohol-based polarizing film, which constitutes the polarizing plate, is controlled to 95°C or higher.
Inventors:
SHIMIZU TOSHIHIRO (JP)
KITAMURA SHUICHI (JP)
TAMURA NAOHISA (JP)
SUGIMOTO YUKI (JP)
KITAMURA SHUICHI (JP)
TAMURA NAOHISA (JP)
SUGIMOTO YUKI (JP)
Application Number:
PCT/JP2018/031505
Publication Date:
March 07, 2019
Filing Date:
August 27, 2018
Export Citation:
Assignee:
NIPPON SYNTHETIC CHEM IND CO LTD (JP)
International Classes:
G02B5/30; G02F1/1335
Foreign References:
| JP2013254153A | 2013-12-19 | |||
| JP2004020630A | 2004-01-22 | |||
| JP2004341310A | 2004-12-02 | |||
| JP2013254072A | 2013-12-19 |
Attorney, Agent or Firm:
SAITOH Yukihiko et al. (JP)
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