Multistable chiral nematic displays
US5453863A · kind A · utility
180Cited by
23References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 1993 |
| Grant date | Sep 26, 1995 |
| Priority date | — |
| Expiry date | May 4, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13775
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A light modulating reflective cell comprising a polymer-free chiral nematic liquid crystalline light modulating material is disclosed. The cell includes nematic liquid crystal having positive dielectric anisotropy and chiral material in an amount effective to form focal conic and twisted planar textures. The chiral material has a pitch length effective to reflect light in the visible spectrum, wherein the focal conic and twisted planar textures are stable in the absence of a field and the liquid crystal material is capable of changing textures upon the application of a field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.