Electro-optical display
US3960750A · kind A · utility
35Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1974 |
| Grant date | Jun 1, 1976 |
| Priority date | — |
| Expiry date | Apr 15, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/60
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A nematic liquid crystal with positive dielectric anisotropy and a nematic liquid crystal with negative dielectric anisotropy are mixed such that the mixture is given a positive dielectric anisotropy and whenever any kind of pleochroic dye is dissolved therein, can effectively utilize its absorption anisotropy for display performances. A clear color-to-color contrast display is provided by employing the mixed liquid crystal added with pluralkinds of dyes of which at least one is a pleochroic dye and at least two are different in hue and in preformance characteristics of display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.