Title:
POLARIZING PLATE AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/216068
Kind Code:
A1
Abstract:
[Problem] The purpose of the present invention is to provide a circularly polarizing plate provided with a phase difference film, the circularly polarizing plate having minimal change in reflective hue even when placed in a high-temperature environment. [Solution] A circularly polarizing plate having a polarizing plate and a phase difference film, the circularly polarizing plate being characterized in that the phase difference film includes a phase difference layer having positive birefringence, the polarizing plate includes a polarizer having a thickness of 15 µm or less and has a protective film on both surfaces of the polarizer, and the protective film between the polarizer and the phase difference film is a non-oriented film having negative birefringence.
Inventors:
NAKAMURA DAICHI (JP)
MATSUMOTO TOSHIKAZU (JP)
MATSUMOTO TOSHIKAZU (JP)
Application Number:
PCT/JP2019/014944
Publication Date:
November 14, 2019
Filing Date:
April 04, 2019
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30; G09F9/30; H01L27/32; H01L51/50; H05B33/02; H05B33/14
Foreign References:
| JP2017111432A | 2017-06-22 | |||
| JP2014063143A | 2014-04-10 | |||
| JP2015212816A | 2015-11-26 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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