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:
Feb. 03, 2015
Filed:
Oct. 28, 2011
Hui-lung Kuo, Taipei, TW;
Mei-chih Peng, Taoyuan County, TW;
Yi-ping Hsieh, Changhua County, TW;
Chin-kai Chang, Tainan, TW;
Hui-Lung Kuo, Taipei, TW;
Mei-Chih Peng, Taoyuan County, TW;
Yi-Ping Hsieh, Changhua County, TW;
Chin-Kai Chang, Tainan, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
The invention provides a broadband cholesteric liquid crystal film, a method for fabricating the same, a polarization device employing the same, and high light efficiency liquid crystal display employing the same. The cholesteric liquid crystal film is a single-layer liquid crystal material structure, and has a top surface and a bottom surface. Further, the cholesteric liquid crystal film includes a first region, a second region, and a third region, and the first region is adjacent to the top surface of the cholesteric liquid crystal film, the third region is adjacent to the bottom surface of the cholesteric liquid crystal film, and the second region is located between the first and third regions, and the average helical pitch Pof the first region and the average helical pitch Pof the third region are both larger than the average helical pitch Pof the second region.