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. 27, 2007
Filed:
Dec. 27, 2001
Sunghoe Yoon, Gyeonggi-do, KR;
Sunghoe Yoon, Gyeonggi-do, KR;
L.G.Philips LCD Co., Ltd., Seoul, KR;
Abstract
A reflective cholesteric liquid crystal (CLC) display device has a cholesteric liquid crystal color filter in which a plurality of protrusions is formed on an upper portion of the cholesteric liquid crystal color filter to obtain a uniform luminance and a uniform color in a main viewing angle range. The reflective cholesteric liquid crystal display device includes a first substrate, an absorption layer on the first substrate, a cholesteric liquid crystal color filter on the absorption layer, the cholesteric liquid crystal color filter having a plurality of protrusions, an overcoat layer on the cholesteric liquid crystal color filter, a first electrode on the overcoat layer, a second substrate, a second electrode beneath the second substrate, a retardation layer on the second substrate, a polarizer on the retardation layer, and a liquid crystal layer between the first electrode and the second electrode.