Title:
POLARIZING PLATE AND OPTICAL DISPLAY DEVICE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2020/256337
Kind Code:
A1
Abstract:
Provided are a polarizing plate and an optical display device comprising same, the polarizing plate comprising: a polarizer; and a first phase difference layer, a second phase difference layer and a third phase difference layer which are sequentially stacked on the lower surface of the polarizer. The first phase difference layer comprises a positive C phase difference layer. The second phase difference layer has positive wavelength dispersibility and an in-plane phase difference of approximately 200nm to 280nm in a wavelength of 550nm. The third phase difference layer has positive wavelength dispersibility and an in-plane phase difference of approximately 80nm to 145nm in a wavelength of 550nm. When the absorption axis of the polarizer is 0°, the angle formed by the slow axis of the second phase difference layer is approximately +14° to +24° or approximately -24° to -14°, and the angle formed by the slow axis of the third phase difference layer is approximately +79° to +89° or approximately -89° to -79°.
Inventors:
KIM YOON JUNG (KR)
LEE SANG HUM (KR)
JUNG RI RA (KR)
JUNG YEON JU (KR)
LEE SANG HUM (KR)
JUNG RI RA (KR)
JUNG YEON JU (KR)
Application Number:
PCT/KR2020/007520
Publication Date:
December 24, 2020
Filing Date:
June 10, 2020
Export Citation:
Assignee:
SAMSUNG SDI CO LTD (KR)
International Classes:
G02B5/30; B32B7/023; B32B7/12; B32B27/32
Domestic Patent References:
| WO2004008197A1 | 2004-01-22 |
Foreign References:
| KR20160012274A | 2016-02-03 | |||
| KR20170117961A | 2017-10-24 | |||
| KR20150046279A | 2015-04-29 | |||
| US20100134910A1 | 2010-06-03 |
Attorney, Agent or Firm:
AJU INTERNATIONAL LAW & PATENT GROUP (KR)
Download PDF:
Previous Patent: STEER-BY-WIRE TYPE STEERING APPARATUS
Next Patent: STEERING CONTROL DEVICE AND STEERING ASSIST SYSTEM INCLUDING SAME
Next Patent: STEERING CONTROL DEVICE AND STEERING ASSIST SYSTEM INCLUDING SAME