Liquid crystal display
US6577361B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2001 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Jun 11, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133555
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A first polarizer (absorption-type polarizer) (21) is disposed in a visible side of a liquid crystal cell (1) in which a liquid crystal layer (15) is sealed in-between a pair of transparent substrates (2, 5), and a second polarizer (reflection-type polarizer) (22), a third polarizer (an absorption-type polarizer or a reflection-type polarizer) (25), and an auxiliary light source (31) are disposed in order in the opposite side to the visible side and by polarizing emitted light from the auxiliary light source 31 by the third polarizer (25) and the second polarizer (22), polarization degree of light emitted from the second polarizer (22) into the liquid crystal cell (1) is improved, thereby unevenness of display caused by lack of the polarization degree and distribution of the polarization degree of the second polarizer (22) and contrast ratio are improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.