Title:
CIRCULAR POLARIZING PLATE AND IMAGE DISPLAY DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2022/244301
Kind Code:
A1
Abstract:
Provided is a circular polarizing plate in which a polarizer is inhibited from deteriorating due to ultraviolet light, light emission of an optical panel, or the like, and that is less likely to come off an optical panel. The circular polarizing plate according to the present invention comprises: a first protective layer; a polarizer; a second protective layer; a first retardation layer; a second retardation layer; and an adhesive layer in the stated order. The first and second protective layers each contain a UV absorbent. The dimension change ratio in an absorption axis direction of the polarizer in a humidify TMA test is at least 0.30%, and the transmittance at a wavelength of 380 nm is less than 10%. The loss elastic modulus G'' of an adhesive agent contained in the adhesive layer at 60°C is at least 0.06 MPa. This circular polarizing plate is used in an image display device.
Inventors:
NAGATA KO (JP)
KOJIMA TADASHI (JP)
GOTO SHUSAKU (JP)
KOJIMA TADASHI (JP)
GOTO SHUSAKU (JP)
Application Number:
PCT/JP2022/001334
Publication Date:
November 24, 2022
Filing Date:
January 17, 2022
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; C09J7/38; C09J201/00; H01L27/32; H01L51/50; H05B33/02
Foreign References:
| US20150247070A1 | 2015-09-03 | |||
| JP2010215878A | 2010-09-30 | |||
| JP2006317733A | 2006-11-24 | |||
| JP2013043952A | 2013-03-04 | |||
| JP2010085802A | 2010-04-15 | |||
| JP2013063631A | 2013-04-11 | |||
| JP2002047468A | 2002-02-12 | |||
| JP2013087225A | 2013-05-13 | |||
| JP2016071347A | 2016-05-09 |
Attorney, Agent or Firm:
MOMII Takafumi (JP)
Download PDF:
Previous Patent: PNEUMATIC TIRE
Next Patent: SOLID-STATE IMAGING DEVICE AND METHOD OF MANUFACTURING SOLID-STATE IMAGING DEVICE
Next Patent: SOLID-STATE IMAGING DEVICE AND METHOD OF MANUFACTURING SOLID-STATE IMAGING DEVICE