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.:

US 7086774 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 08, 2006

Filed:

Jan. 22, 2004
Applicants:

Yasutoshi Katsuda, Mie, JP;

Takeshi Ogura, Mie, JP;

Satoshi Ono, Mie, JP;

Inventors:

Yasutoshi Katsuda, Mie, JP;

Takeshi Ogura, Mie, JP;

Satoshi Ono, Mie, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A backlight unit of a liquid crystal display device includes a prism light guide plate supported by a frame-like chassis. The light guide plate includes a light incident surface having two ends, near which stainless steel metal stoppers are attached respectively. The metal stoppers include pawls which, upon the attachment, come inward from sides of the light incident surface of the light guide plate to between the light incident surface and a lamp (lamp holders). When the liquid crystal display device is subjected to an impact from outside, the metal stoppers prevent the light guide plate from moving toward the lamp, thereby offering improved impact resistance.


Find Patent Forward Citations

Katsuda, Yasutoshi. (2006). Surface lighting device and liquid crystal display device using the same (U.S. Patent No. 7086774). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7086774

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