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:
Dec. 31, 2013
Filed:
Sep. 15, 2011
Sang Pil Kim, Gyeongsangbuk-do, KR;
Chang Ik Hwang, Daegu, KR;
Hee Cheong Lee, Gyeonggi-do, KR;
Sang Hoon Lee, Gyeongsangbuk-do, KR;
Jun Sang Park, Gyeongsangbuk-do, KR;
Kwang Soo Kim, Daejeon, KR;
Sang Pil Kim, Gyeongsangbuk-do, KR;
Chang Ik Hwang, Daegu, KR;
Hee Cheong Lee, Gyeonggi-do, KR;
Sang Hoon Lee, Gyeongsangbuk-do, KR;
Jun Sang Park, Gyeongsangbuk-do, KR;
Kwang Soo Kim, Daejeon, KR;
Abstract
A light guide plate for a surface light source device is provided, which includes an incident surface configured to have light from lamps disposed along a predetermined axis, be incident thereon, an emitting surface configured to have the incident light emitted therefrom, a back surface configured to face the emitting surface, and a plurality of unit cells configured to have microprism patterns engraved thereon and distributed and arranged on the back surface. A crossing angle of a microprism arrangement axis, formed by a ridge direction of the microprism patterns, and of an arrangement axis of the lamps is disposed in an alternate angle. The light guide plate has a high front brightness and an excellent uniformity in brightness and does not have a moire phenomenon. In a backlight unit, the use of optical sheets stacked on the light guide plate can be reduced.