Voltage control for modulating both amplitude and phase in liquid crystals
US11282472B2 · kind B2 · utility
4Cited by
1References
18Claims
0Family size
Inventors
Key dates
| Filing date | Apr 19, 2019 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Apr 19, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/028
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Techniques for modulating both amplitude and phase via a layer of liquid crystals are described. According to one aspect of the techniques, a voltage being applied or coupled across the layer of liquid crystals is controlled by gradually increasing the voltage from a low level to a high level to perform the AM in a first range and the PM in second range, where the characteristics of the liquid crystals is significant, for example, by increasing the thickness or optical birefringence of the layer of liquid crystals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.