Liquid crystal color display
US7636141B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 4, 2002 |
| Grant date | Dec 22, 2009 |
| Priority date | — |
| Expiry date | Jul 4, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133514
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal color display with a color filter having plural pixels of 3 colors of red, green, and blue, plural light shutters which control a transmitting light quantity of each pixel by opening and closing a liquid crystal, and a light source; when a wavelength of the maximum green pixel transmittance of the above color filter is λ, an average of normalized emitting spectrum of light source (brightness when maximum value is 1), in range of λ±3 nm, is 0.1 or higher; and a wavelength of a coinciding point, of transmittance of blue pixel whose wavelength is longer than the peak wavelength of the transmitting wavelength band of blue pixel of a color filter, and transmittance of green pixel whose wavelength is shorter than the peak wavelength of the transmitting wavelength band of green pixel of a color filter, is 500 nm or shorter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.