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. 20, 2001
Filed:
Aug. 20, 1998
Applicant:
Inventor:
Dennis R. Hall, Beaverton, OR (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/13 ; G02F 1/1335 ;
U.S. Cl.
CPC ...
G02F 1/13 ; G02F 1/1335 ;
Abstract
The invention teaches methods whereby the lighting efficiency of many lighted displays, including liquid Crystal Displays (LCDs) are increased by an order of magnitude through the use of chiral nematic liquid crystal materials incorporated into the light pipes of the displays. The light pipe technology also enables a practical embodiment of the stereoscopic display of Venolia. These methods are also applied to the fabrication of lighted signs for advertising and status indicators in hostile environments. The technology of the light pipes is also applied to the creation of a novel art medium.