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:
Mar. 31, 2009
Filed:
Jan. 19, 2006
Jin-sung Choi, Cheonan-si, KR;
Jheen-hyeok Park, Seongnam-si, KR;
Sang-hoon Lee, Yongin-si, KR;
Si-joon Song, Yongin-si, KR;
Eun-jeong Kang, Asan-si, KR;
Jin-sung Choi, Cheonan-si, KR;
Jheen-hyeok Park, Seongnam-si, KR;
Sang-hoon Lee, Yongin-si, KR;
Si-joon Song, Yongin-si, KR;
Eun-jeong Kang, Asan-si, KR;
Abstract
Provided herein is a lens composition of an LED device for an LCD having high transparency and high heat resistance, and an LED device, a backlight unit and an LCD comprising the lens composition. The lens composition includes a copolymer represented by the formula 1 and having a weight average molecular weight of about 5,000 to about 500,000: wherein Rand Rindependently represent a hydrogen atom, a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms or —COORgroup in which Rrepresents a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, Rand Rindependently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, the ratio n/n+m ranges from about 0.3 to about 0.995, and the ratio m/n+m ranges from about 0.005 to about 0.7.