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:
Oct. 07, 2008
Filed:
Mar. 25, 2005
Sung-tae Kim, Gwanak-gu, KR;
Ki-cheol Yoon, Cheonan-si, KR;
Keon-il Kim, Yuseong-gu, KR;
Jae-chul Jung, Yuseong-gu, KR;
Sung-Tae Kim, Gwanak-gu, KR;
Ki-Cheol Yoon, Cheonan-si, KR;
Keon-Il Kim, Yuseong-gu, KR;
Jae-Chul Jung, Yuseong-gu, KR;
Samsung Fine Chemicals Co., Ltd., Ulsan, KR;
Abstract
The present invention is related to a method of method of manufacture of a reflective polarizing film that can improve brightness of a liquid crystal display device remarkably by making a liquid crystal film that can cover visible light by using cholesteric liquid crystal layers having different selective light-reflection central wavelengths, attaching a quarter wave (¼ λ) retardation film on top of the liquid crystal film, and adding prism patterns to the opposite side of the liquid crystal film. The reflective polarizing film of the present invention is characterized by that two or more cholesteric liquid crystal layers having different selective reflection wavelength regions are laminated in order from a shorter wavelength to a longer wavelength, and brightness of a liquid crystal display device is maximized owing to an integrated film manufactured by attaching a ¼ λ retardation film onto cholesteric liquid crystal layers and forming prism patterns onto the opposite side.