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. 07, 2007
Filed:
Dec. 30, 2004
Sang Gou Lee, Daegu-si, KR;
Chang Jong Kim, Cheongju-si, KR;
Young Gun Kim, Cheongju-si, KR;
Yun Ho Choi, Seoul, KR;
Ho Sung Chin, Seoul, KR;
Bong Taek Hong, Cheongju-si, KR;
Kab Jin Hwang, Cheongju-si, KR;
Ung Sang Lee, Cheongju-si, KR;
Chul Young Kim, Seoul, KR;
Sang Gou Lee, Daegu-si, KR;
Chang Jong Kim, Cheongju-si, KR;
Young Gun Kim, Cheongju-si, KR;
Yun Ho Choi, Seoul, KR;
Ho Sung Chin, Seoul, KR;
Bong Taek Hong, Cheongju-si, KR;
Kab Jin Hwang, Cheongju-si, KR;
Ung Sang Lee, Cheongju-si, KR;
Chul Young Kim, Seoul, KR;
LG.Electronics, Inc., Seoul, KR;
Abstract
A prism sheet of an LCD includes a body part made of a transparent resin material and a plurality of polypyramid-shaped optical unit structures formed in a intaglio type on the body part. The plurality of optical unit structures have intaglio-type polypyramid shapes in an inside of their polygonal structure. A center of the intaglio portion corresponds to a vertex of the polypyramid, thereby forming a point.