Title:
TRANSMISSION LIQUID CRYSTAL DISPLAY
Document Type and Number:
WIPO Patent Application WO/2000/050953
Kind Code:
A1
Abstract:
A liquid crystal display with no color filter even when a linear or planar illumination light source is used. The liquid crystal display comprises a linear or planar light source, a wedgelike light guide to which a fraction of light radiated from the illumination light source is directed, wavelength separating means for separating light emerging from the wedgelike light guide obliquely and generally parallel into lights having wavelengths in a plurality of ranges, light focusing means for receiving lights separated by the separating means and focusing a light in a predetermined wavelength range on a predetermined sub-pixel, and a liquid crystal layer controllable for each sub-pixel. The light focusing means is desirably a cylindrical lens array. The wedgelike light guide specularly reflects light at the face opposed to the face from which light emerges, may have a metallic surface mirror, and preferably has a vertex angle of 0.1 to 3; more preferably 0.3 to 1.
Inventors:
TAIRA YOHICHI (JP)
Application Number:
PCT/JP2000/000912
Publication Date:
August 31, 2000
Filing Date:
February 17, 2000
Export Citation:
Assignee:
IBM (US)
TAIRA YOHICHI (JP)
TAIRA YOHICHI (JP)
International Classes:
G02B6/00; F21V8/00; G02F1/1335; G02F1/13357; (IPC1-7): G02F1/1335
Foreign References:
| JPH10319217A | 1998-12-04 | |||
| JPH09230320A | 1997-09-05 | |||
| JPH09318942A | 1997-12-12 | |||
| JPH10241434A | 1998-09-11 |
Attorney, Agent or Firm:
Sakaguchi, Hiroshi (Shimotsuruma Yamato-shi, Kanagawa, JP)
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