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. 24, 1998
Filed:
Dec. 29, 1995
Applicant:
Inventor:
Sudhakar N Kulkarni, Fremont, CA (US);
Assignee:
Kaiser Electronics, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ; G02F / ; G02F / ;
U.S. Cl.
CPC ...
349128 ; 349135 ; 349183 ; 349187 ;
Abstract
A single substrate polymeric cholesteric liquid crystal (CLC) device useful in display applications such as for high efficiency polarizers and color filters is created by a process that coats a first substrate with a polyimide layer and a second substrate with an amorphous fluoropolymer layer. Both layers are buffed and liquid CLC material is placed between the grooved layers. After annealing, the amorphous fluoropolymer coated substrate is removed, leaving the CLC material bonded to a single substrate.