Liquid crystal grating, display device and methods for controlling thereof
US10627663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2017 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Sep 22, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The embodiments of the present disclosure relate to a liquid crystal grating, a display device, and methods for controlling thereof. The liquid crystal grating comprises a first substrate; a second substrate disposed opposite to the first substrate; an electrode layer disposed on the first substrate or the second substrate, wherein the electrode layer comprises at least two sets of electrodes arranged periodically, and each set of electrodes of the two sets of electrodes comprises two sub-electrodes arranged parallel to each other; a liquid crystal layer disposed between the first substrate and the second substrate; and a control unit configured to make the liquid crystal grating be operated in a transparent mode or a grating mode; when the liquid crystal grating is operated in the transparent mode, there is no voltage difference between two sub-electrodes of each set of electrodes, and between two adjacent sub-electrodes of different sets; and when the liquid crystal grating is operated in the grating mode, there is a voltage difference between two sub-electrodes of each set of electrodes, and there is no voltage difference between two adjacent sub-electrodes of different sets. Th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.