Display with a wire grid polarizing beamsplitter
US7221420B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 10, 2006 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | May 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for creating a patterned polarization compensator (550) has a retardance characterization system (560) for optically scanning the spatially variant retardance of a spatial light modulator (210). A compensator patterning system (565) writes a spatially variant photo-alignment pattern on a substrate (555) of a polarization compensator. The patterned polarization compensator is completed by a process that includes providing a photo-alignment layer onto which spatially variant photo-alignment layer is formed, providing a liquid crystal polymer layer onto the photo-alignment layer, and then fixing the liquid crystal polymer layer to form a spatially variant retardance pattern into the structure of the patterned polarization compensator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.