The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 2011
Filed:
Jan. 09, 2007
Hidetoshi Numata, Kanagawa-ken, JP;
Shinya Ono, Kanagawa-ken, JP;
Fumiaki Yamada, Kanagawa-ken, JP;
Yoichi Taira, Tokyo-to, JP;
Hidetoshi Numata, Kanagawa-ken, JP;
Shinya Ono, Kanagawa-ken, JP;
Fumiaki Yamada, Kanagawa-ken, JP;
Yoichi Taira, Tokyo-to, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A color filterless display device performing color display for expressing one pixel by three RGB sub-pixels includes: a light source; a diffraction grating for separating a light irradiated from this light source into lights of a plurality of wavelength regions; a cylindrical lens array for receiving the separated light and condensing the light while corresponding to each of the sub-pixels; and a liquid crystal cell including a structure portion for correcting an angle of the condensed light for all sub-pixels, wherein, in the structure portion of this liquid crystal cell, a side onto which a light from the cylindrical lens array is made incident is made of a high refractive index layer, an emitting side from which the light is emitted is made of a low refractive index layer, and a Fresnel-type microprism structure is formed by the high refractive index layer and the low refractive index layer.