Heat reflection light valve of LCD projector and projector
US12422737B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2022 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Jan 20, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13306
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention discloses a heat reflection light valve of an LCD (Liquid Crystal Display) projector and a projector. The heat reflection light valve comprises an upper glass substrate, a lower glass substrate and a liquid crystal box clamped between the upper glass substrate and the lower glass substrate, and a TFT (Thin Film Transistor) array is produced on the lower glass substrate; and a CF (Color Filter), a BM (Black Matrix), an OC (Over Coater), a transparent electrode and a post spacer are produced on the upper glass substrate. A layer of reflection film for reflecting blue light is produced on the inner surface of the upper glass substrate, and the reflection film is not produced in a region corresponding to a blue filter matrix of the CF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.