Continuous silicon MOS AC light valve substrate
US4191454A · kind A · utility
12Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1978 |
| Grant date | Mar 4, 1980 |
| Priority date | — |
| Expiry date | Oct 10, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1354
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is disclosed a single crystal silicon charge storage apparatus suitable for use in an alternating current driven liquid crystal light valve. The charge storage medium is made of a high resistivity and photosensitive under AC excitation substrate on which an MOS capacitor is formed having fast photoelectric transient response and capable of operating over a wide frequency range. The AC activation provides to a liquid crystal light valve a greatly improved electrochemical stability. Electrically coupled high-reflectivity mirrors and light blocking layers can be used to couple the liquid crystal to the MOS capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.