Apparatus for providing a pulsed liquid crystal display
Abstract
Abstract A body of liquid crystal material, normally in a transparent state whose turn-on period for changing into a light scattering state is less in duration than its decay period for returning to the transparent state, is supplied with an intermittent electric field which varies from a potential which is below the turn-on threshold potential of the liquid crystal material to a potential which is equal to or above the threshold or turn-on potential when the light scattering state is desired. The intermittent electric field is refreshed at a sufficiently rapid rate such that to the eye of a human observer the body of liquid crystal material appears to be ''''on'''' or in the light scattering state continuously.
Inventors
- 👤 A Medwin
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |