Title:
【考案の名称】フルカラーの液晶デイスプレイ装置
Document Type and Number:
Japanese Patent JPH04124233
Kind Code:
U
Abstract:
A full color liquid crystal display comprises first, second, and third subtractive LCD filters, each filter comprising means for independently subtracting one of the primary subtractive colors from a polychromatic light beam, without substantially affecting the other subtractive colors. Each of the subtractive LCD filters combines wavelength selective dichroic polarizers with a twisted nematic liquid crystal cell to provide a filter that can selectively subtract varying amounts of incident spectral radiant energy from within one of three primary energy bands. A first selective polarizer that linearly polarizes wavelengths in the appropriate one of the above mentioned color bands, while passing light in the other two bands substantially unaffected, a first liquid crystal cell, and a second selective dichroic polarizer identical to the first polarizer, but positioned with its axis of polarization perpendicular to that of the first polarizer. This filter will pass light of all colors when non-selected, but will block or subtract light of the particular color when in the selected state.
Inventors:
Christopher D'Abriyu, Mathieuson
Application Number:
JP1116392U
Publication Date:
November 12, 1992
Filing Date:
March 05, 1992
Export Citation:
International Classes:
G02F1/133; G02F1/1335; G02F1/1347; G09F9/35; G09F9/46; G02F1/139; (IPC1-7): G02F1/1347; G02F1/133; G02F1/1335; G09F9/35; G09F9/46