Title:
CIRCULARLY POLARIZING PLATE AND CIRCULARLY POLARIZING PLATE WITH GLASS PLATE
Document Type and Number:
WIPO Patent Application WO/2020/179372
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a circularly polarizing plate having good optical characteristics even after a wet heat test; and a circularly polarizing plate with a glass plate. This circularly polarizing plate has a linear polarizing layer, an attachment layer, and a λ/4 retardation layer in this order, wherein: the linear polarizing layer contains a cured product of a polymerizable liquid crystal compound and a dichroic dye; and the λ/4 retardation layer contains a cured product of a polymerizable liquid crystal compound. The moisture permeability of the attachment layer at a temperature of 40 °C and a humidity of 90%RH is 100 g/(m2∙24hr) or less.
Inventors:
KIM EUNYOUNG (KR)
YOO JIHEE (KR)
KIM DONGHWI (KR)
YOO JIHEE (KR)
KIM DONGHWI (KR)
Application Number:
PCT/JP2020/005105
Publication Date:
September 10, 2020
Filing Date:
February 10, 2020
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30; B32B7/023; B32B17/10; C09J7/38; C09J121/00
Domestic Patent References:
| WO2017195506A1 | 2017-11-16 | |||
| WO2018042879A1 | 2018-03-08 |
Foreign References:
| JP2019020725A | 2019-02-07 | |||
| JP2018119075A | 2018-08-02 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
Download PDF:
Previous Patent: STACK AND IMAGE DISPLAY DEVICE
Next Patent: STORE SYSTEM, STORE DEVICE, PAYMENT METHOD, AND PROGRAM
Next Patent: STORE SYSTEM, STORE DEVICE, PAYMENT METHOD, AND PROGRAM