Birefringement film containing liquid crystal material having multi domains with splayed structure
US6924861B2 · kind B2 · utility
3Cited by
10References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2003 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Apr 5, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A birefringent film comprising at least one birefringent layer of liquid crystal material forming multi domains with a splayed structure may be coated onto a reflective substrate, e.g., with an aluminium surface. The birefringent film is particularly suited for decorative, security, authentification or identification applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.