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:
Aug. 26, 2003
Filed:
Jun. 07, 2000
LG. Philips LCD Co., LTD, Seoul, KR;
Abstract
The present invention discloses a backlight device for a liquid crystal display device, which includes a light source; a light waveguide plate having an end portion and a front portion; a lamp holder having a lamp reflector, the lamp holder surrounding most part of the light source, the lamp reflector reflecting a light to the end portion of the light waveguide plate; and a first prism sheet located on the front portion of the light waveguide plate, the prism sheet having a plurality of convex portions, the convex portions having an inclined line portion and a curved line portion, the inclined line portion having an predetermined angle with respect to a direction vertical to the front portion of the light waveguide plate.