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.

Date of Patent:
Jul. 21, 1992

Filed:

Dec. 19, 1990
Applicant:
Inventors:

Hiroshi Fukutani, Nara, JP;

Kunihiko Ito, Yamatokooriyama, JP;

Kazuhiko Akimoto, Nara, JP;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
359 67 ; 359 69 ; 359 68 ;
Abstract

In a color liquid crystal display device of the invention, light-blocking members of predetermined configurations (characters, graphics etc.) are disposed on the surface of one side of a liquid crystal display element, that is to say the surface on the side opposite to the light source, and the predetermined configurations are displayed on the color liquid crystal display device by blocking the light from the light source with the light-blocking members. Further, a light-scattering plate is disposed between the light source and the liquid crystal display element, or between the liquid crystal display element and the light-blocking members. It is possible to allow transmission of a part of the light blocked by the light-blocking members by scattering the light which is transmitted through the liquid crystal display element with the arrangement of the light-scattering plate. Therefore, around the periphery of the light-blocking members, the color balance of the transmitted light breaks down and only a specific color of light is transmitted, thereby preventing the colored and blurred appearance of the peripheral part of the light-blocking members. Based upon this, the display quality of the color liquid crystal display device is markedly improved.


Find Patent Forward Citations

Fukutani, Hiroshi. (1992). Color liquid crystal display device having a light scattering plate and (U.S. Patent No. 5132830). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5132830

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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