Browse Prior Art Database

Color Liquid Crystal Display

IP.com Disclosure Number: IPCOM000037169D
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-29

Publishing Venue

IBM

Related People

Authors:
Fukunaga, T Koseki, T Ueki, T [+details]

Abstract

Disclosed is a color filter for liquid crystal displays. When a color pixel for color display is composed of red/green/blue/white dots, one color pixel can display 16 colors by combinations of on and off of each color dot. Spectral transmittance of white dots is a very significant factor because it has direct effects upon the color property of 8 colors which include the white dot. When the opening rate is about 50%, optimum optical density of the white dot seems to be in the range of 0.3-0.5; however, the optimum color property of the white dot cannot be defined by only the optical density because there are innumerable spectra of white dots which satisfy the condition.