Laser addressed smectic displays
US4701029A · kind A · utility
5Cited by
4References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 10, 1985 |
| Grant date | Oct 20, 1987 |
| Priority date | — |
| Expiry date | Jul 10, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13781
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A laser beam addressed smectic display in which the laser beam is used to write clear tracks in an optically scattering field employs an anisotropic conductivity dopant in the liquid crystal filling so that the cell can be electrically set into the scattering state by means of dynamic scattering effects. This requires the use of a laser light absorbing dye that is not only photochemically stable, but also stable against the effects of the relatively high fields and currents present when the cell is being set into the scattering state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.