Polarizing plate with a retardation layer and image display apparatus
US10107946B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2016 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Sep 26, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided a thin polarizing plate with a retardation layer excellent in reworkability. A polarizing plate with a retardation layer according to the present invention includes: a polarizing plate including a polarizer and a protective layer on at least one side of the polarizer; a retardation layer; a first adhesive layer configured to bond the polarizing plate and the retardation layer; and a second adhesive layer arranged as an outermost layer on an opposite side of the retardation layer to the polarizing plate. An average linear expansion coefficient of the second adhesive layer when an ambient temperature is changed from −150° C. to 20° C. is 38.0(×10−5/° C.) or more, and is larger than an average linear expansion coefficient of the first adhesive layer when an ambient temperature is changed from −150° C. to 20° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.