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 8545085 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 01, 2013

Filed:

Jan. 15, 2010
Applicants:

Sung-tao Wu, Tainan County, TW;

Yuan-chi Lee, Tainan County, TW;

Inventors:

Sung-Tao Wu, Tainan County, TW;

Yuan-Chi Lee, Tainan County, TW;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 7/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention relates to a backlight module and light guide plate thereof. The light guide plate includes a first surface, a second surface and a side surface. The first surface has a plurality of first regions, a second region and a central line. The second region has a plurality of microstructures outside the first regions. The first regions and the second region are solid. The side surface is disposed between the first surface and the second surface. The first regions are adjacent to the side surface and extend toward the central line, and the first regions are intervally spaced. Whereby, the manufacture step of the light guide plate is simplified, and the manufacture cost of the light guide plate is lowered, and the distribution of the microstructures can reduce the hot spots in front a plurality of point light sources efficiently.


Find Patent Forward Citations

Wu, Sung-Tao. (2013). Backlight module and light guide plate thereof (U.S. Patent No. 8545085). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8545085

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