Display apparatus with arrangement to decrease quantity of backlight and increase transmittance of the display panel
US8004545B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2007 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | May 11, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display apparatus is arranged to have pixels, each of which has a RGBW (Red, Green, Blue and White) wavelength distribution characteristic, located two-dimensionally. The display apparatus includes an input unit for inputting a signal for controlling a using ratio of a W signal, a color signal converting unit for calculating a RGBW driving signal from a RGB input signal and the W using ratio. The RGBW signal is calculated so as to control the contribution of the W signal to the image quality. The display apparatus switches the display from the contrast-highlighted display in a relatively bright lighting condition to the color-reproducibility-highlighted display in a relatively gloomy lighting condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.