Stress insensitive liquid crystal display
US9128327B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2013 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Jun 24, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133638
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display is provided that has upper and lower polarizers, a color filter layer, a liquid crystal layer, and a thin-film transistor layer. The color filter layer and thin-film transistor layer may be formed from materials such as glass that are subject to stress-induced birefringence. To reduce light leakage that reduces display performance, one or more internal layers may be incorporated into the display to help ensure that linearly polarized backlight that passes through the display is not undesirably converted into elliptically polarized light. The internal layers may include a thin-film polarizer layer that forms a coating on the color filter layer, a thin-film polarizer layer that forms a coating on the thin-film-transistor layer, a retarder layer that is formed as a coating on the color filter layer, and a retarder layer that is formed as a coating on the thin-film-transistor layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.