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:
Nov. 08, 2011
Filed:
Apr. 30, 2009
Hui-lung Kuo, Taipei, TW;
Mei-chih Peng, Taoyuan County, TW;
Pin-chen Chen, Taipei, TW;
Ying-jui Lin, Kaohsiung, TW;
Hui-Lung Kuo, Taipei, TW;
Mei-Chih Peng, Taoyuan County, TW;
Pin-Chen Chen, Taipei, TW;
Ying-Jui Lin, Kaohsiung, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A low color shift polarizer assembly is provided, comprising a cholesteric liquid crystal film with a plurality of very tiny grooves which are irregularly dispersed on a surface of the cholesteric liquid crystal film. The selective reflective wavelength range of the cholesteric liquid crystal film has a long wavelength boundary ≧700 nm and a short wavelength boundary ≦420 nm. A quarter wavelength retardation plate can be disposed on the cholesteric liquid crystal film to build up the final low color shift polarizer assembly. The polarizer assembly can be combined with a backlight unit and further with a liquid crystal display to provide low color shift at large viewing angles and high brightness.