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 7280172 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 09, 2007

Filed:

Jul. 31, 2002
Applicants:

Ik-soo Lee, Suwon-si, KR;

Jin-baek Kim, Gunpo-si, KR;

Inventors:

Ik-Soo Lee, Suwon-si, KR;

Jin-Baek Kim, Gunpo-si, KR;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01); F21V 7/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

Disclosed are a light guide plate, a front illumination type liquid crystal display device using the same, and a method for displaying an image therein. A light reflection pattern is formed on a light reflection surface of the light guide plate so as to change an optical distribution and prevent the moiré phenomenon. The light reflection pattern prevents the light from being leaked through a side of the light guide plate, so an effective display area is not divided into a bright area, a boundary area, and a dark area. It is possible to change the optical distribution and to prevent the moiré phenomenon, so the liquid crystal display device can display an image with an improved brightness uniformity.


Find Patent Forward Citations

Lee, Ik-Soo. (2007). Light guide plate, liquid crystal display device having the same, and method for displaying an image using the liquid crystal display device (U.S. Patent No. 7280172). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7280172

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