Apparatus for and method of driving a cholesteric liquid crystal flat panel display
US5933203A · kind A · utility
77Cited by
64References
60Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1997 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Jan 8, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/061
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Driver apparatus and methods of driving at least a portion of a cholesteric liquid crystal ("CLC") panel to a state having a given reflectivity. One of the methods includes the steps of: (1) initially driving the portion to a nematic phase, (2) subsequently driving the portion to a cholesteric phase focal-conic state, the cholesteric phase focal-conic state providing a known reference state for subsequent driving of the portion and (3) thereafter driving the portion to the state having the given reflectivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.