Liquid crystal variable drive voltage
US8786529B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2011 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Jul 27, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A voltage may be provided to a liquid crystal addressable element as part of a liquid crystal device. The provided voltage may be reduced from a driven state to a relaxed state in a time period greater than 1 μs. The reduction may further be performed in less than 20 ms. The liquid crystal device may be a polarization switch, which in some embodiments may be a multi-segment polarization switch. In one embodiment, pulses of limited duration of a light source may be provided to the polarization switch. The manner of voltage reduction may reduce optical bounce of the liquid crystal device and may allow one or more of the pulses of the light source to be shifted later in time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.