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:
Mar. 23, 1993
Filed:
Apr. 24, 1991
Nobuyuki Takahashi, Kawachinagano, JP;
Hisashi Oyama, Ikoma, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In a plain light source device used for backlighting a light transmission type liquid crystal display, a reflector for reflecting the light from the light source toward the liquid crystal panel is provided which is formed from a conductive resin (plastic) consisting of a resinous (plastic) material with a metal fiber mixed therein. The thus formed reflector is an insulator at its surfaces and a conductor inside. A board on which the light source is supported is electrically and mechanically connected to the reflector for grounding. The reflector thereby serves as a shield against the noise generated by the light source. Further, a transparent conductive sheet is disposed on the front side (on the display panel side) of the light source. The conductive sheet is electrically connected to the board for grounding. As a result, the light source is surrounded by the reflector and the tranparent conductive sheet, both grounded, thus providing further reliable shielding.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile