Polarizing, photochromic devices and methods of making the same
US7978391B2 · kind B2 · utility
4Cited by
102References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 31, 2006 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | May 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/23
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A liquid crystal cell including a first substrate having a first surface; a second substrate having a second surface, wherein the second surface of the second substrate is opposite and spaced apart from the first surface of the first substrate so as to define a region; and within the region defined by the first surface and the second surface, a liquid crystal material adapted to be at least partially ordered and at least one thermally reversible photochromic-dichroic compound adapted to be at least partially aligned and having an average absorption ratio greater than 2.3 in an activated state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.