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.:

US 6965420 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 15, 2005

Filed:

Sep. 05, 2003
Applicants:

Le LI, Hopewell Junction, NY (US);

Bunsen Fan, Cortland Manor, NY (US);

Yingqiu Jiang, Sunnyvale, CA (US);

Sadeg M. Faris, Pleasantville, NY (US);

Jian-feng LI, Boulder, CO (US);

Sameer Vartak, Lake Mohegan, NY (US);

Inventors:

Le Li, Hopewell Junction, NY (US);

Bunsen Fan, Cortland Manor, NY (US);

Yingqiu Jiang, Sunnyvale, CA (US);

Sadeg M. Faris, Pleasantville, NY (US);

Jian-Feng Li, Boulder, CO (US);

Sameer Vartak, Lake Mohegan, NY (US);

Assignee:

Reveo, Inc., Elmsford, NY (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F001/1334 ;
U.S. Cl.
CPC ...
Abstract

A light controlling film is disclosed, comprising a polymerized polymer network varying spatially in a direction normal to the film surface, where the polymerized polymer network is a crosslinked high molecular weight polymeric material mixed with a low molecular weight nematic material exhibiting cholesteric liquid crystal (CLC) order, wherein an electric field impressed in the film controls the reflection bandwidth of circularly polarized light.


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Li, Le. (2005). Spectrum-controllable reflective polarizers having electrically-switchable modes of operation (U.S. Patent No. 6965420). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6965420

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