Dimmer
US11487141B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2022 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Mar 21, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13737
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A dimmer includes a liquid crystal (LC) panel and a driving circuit. The LC panel has a plurality of LCs doped with dichroic dye. The LC panel comprises a plurality of pixels. The driving circuit is electrically connected to the LC panel, and configured to control driving of the pixels of the LC panel. At least one of the pixels has a storage capacitor and an LC capacitor coupled in parallel. A ratio of a capacitance value of the LC capacitor to a capacitance value of the storage capacitor is greater than 10:1. The driving circuit is configured to control an LC angle of LCs in each of the pixels, and the dichroic dye is driven by surrounding LCs and presents an angle correlated with the LC angle of the surrounding LCs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.