Polarizer
US11231536B2 · kind B2 · utility
0Cited by
23References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2017 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Aug 4, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0018
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A polarizer including an oriented polymeric first layer is described. The oriented polymeric first layer is preparable from a mixture of polyvinyl alcohol and crosslinker where the crosslinker is included in the mixture at 5 to 40 percent by weight based on the total weight of the polyvinyl alcohol and crosslinker. The oriented polymeric first layer is a substantially uniaxially drawn layer, in that for U=(1/MDDR−1)/(TDDR1/2−1), U is at least 0.85, with MDDR being a machine direction draw ratio and TDDR being a transverse direction draw ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.