Title:
POLARIZER, POLARIZING PLATE INCLUDING SAID POLARIZER, AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/024796
Kind Code:
A1
Abstract:
Provided is a polarizer that is extremely thin but still suppresses cracking in a section worked into an atypical shape. This polarizer is formed from a PVA-based resin film that includes a dichromatic substrate and has a non-rectangular, atypical shape. In one embodiment, the polarizer satisfies formula (1), if unit transmittance is x% and the birefringence of the PVA-based resin is y. In another embodiment, the polarizer satisfies formula (2), if the unit transmittance is x% and the in-plane phase difference of the PVA-based resin film is z nm. In yet another embodiment, the polarizer satisfies formula (3), if the unit transmittance is x% and the orientation function of the PVA-based resin is f. In still another embodiment, the polarizer has a piercing strength of at least 30 gf/μm. (1) y <−0.011x + 0.525; (2) z <−60x + 2875; (3) f <−0.018x + 1.11
Inventors:
TAKAE KOSUKE (JP)
KAMIJO TAKASHI (JP)
KONNO HIROSHI (JP)
KAMIJO TAKASHI (JP)
KONNO HIROSHI (JP)
Application Number:
PCT/JP2021/026724
Publication Date:
February 03, 2022
Filing Date:
July 16, 2021
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; H01L27/32; H01L51/50; H05B33/02; H05B33/14
Domestic Patent References:
| WO2018235630A1 | 2018-12-27 | |||
| WO2017010218A1 | 2017-01-19 | |||
| WO2016093277A1 | 2016-06-16 | |||
| WO2019244923A1 | 2019-12-26 |
Foreign References:
| JP2017182017A | 2017-10-05 | |||
| JP2017003954A | 2017-01-05 | |||
| JP2017187731A | 2017-10-12 | |||
| JP2020101574A | 2020-07-02 | |||
| JP2017062517A | 2017-03-30 | |||
| JP2006291173A | 2006-10-26 | |||
| JP2016071350A | 2016-05-09 |
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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