Lyotropic nematic liquid crystals for use in electro-optical display devices
US3965030A · kind A · utility
4Cited by
4References
5Claims
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Key dates
| Filing date | Aug 7, 1972 |
| Grant date | Jun 22, 1976 |
| Priority date | — |
| Expiry date | Aug 7, 1992 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/48
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A display device in which a thin layer of a lyotropic nematic mesomorphic composition is utilized to diffuse light from a source toward an observer by applying a suitable voltage, for example, 20 volts for one mil layer. One form of the device transmits light through the layer. A second form of the device uses light diffused and reflected to the observer. A preferred lyotropic nematic mesomorphic composition includes three compounds of the structural formulae: ##SPC1## ##SPC2##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.