Liquid crystal spatial light modulator
US11287705B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jul 19, 2018 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Jul 19, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K30/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention concerns a liquid crystal spatial light modulator (101) comprising: a liquid crystal layer (7); and on at least one side of the liquid crystal layer (7), at least one photovoltaic cell (456), each photovoltaic cell (456) comprising a photosensitive layer (5) comprising electron-donating (D) molecules and electron accepting (A) molecules, each photovoltaic cell (456) being arranged for spontaneous photovoltage under illumination. Electron-donating molecules and electron accepting molecules are preferably blended and form preferably an organic bulk heterojunction layer. The photosensitive layer (5) of each photovoltaic cell (456) is preferably comprised between: —an electron conducting layer (4) arranged for a transfer of an electron from its contacting photosensitive layer (5) easier than a transfer of an electron hole from its contacting photosensitive layer (5), and —an electron hole conducting layer (6) arranged for a transfer of an electron hole from its contacting photosensitive layer (5) easier than a transfer of an electron from its contacting photosensitive layer (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.