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:
Dec. 30, 2003
Filed:
Jun. 02, 2000
Yong Beom Kim, Kunpo, KR;
LG Philips LCD Co., Ltd., Seoul, KR;
Abstract
A transmission-reflection type liquid crystal display device including a first transparent substrate and a second transparent substrate; a liquid crystal layer between the first transparent substrate and the second transparent substrate; a linear polarizer and a resinoid color filter provided on the second transparent substrate; a left-handed cholesteric liquid crystal circular polarizer provided on the first transparent substrate; and a left-handed cholesteric liquid crystal color filter formed on the first transparent substrate in order to be situated between the cholesteric liquid crystal circular polarizer and the liquid crystal layer. The liquid crystal display device having this structure can be driven as a reflection type and a transmission type display. The cholesteric liquid crystal color filter having good color purity is added to the resinoid color filter to improve the overall color properties of the device.