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:
Dec. 11, 2012
Filed:
Jun. 13, 2007
Quan LI, Stow, OH (US);
Lisa M. Green, Royal Oak, MI (US);
J. William Doane, Kent, OH (US);
Asad A. Khan, Kent, OH (US);
Nithya Venkataraman, Wooster, OH (US);
Irina Shiyanovskaya, Stow, OH (US);
Quan Li, Stow, OH (US);
Lisa M. Green, Royal Oak, MI (US);
J. William Doane, Kent, OH (US);
Asad A. Khan, Kent, OH (US);
Nithya Venkataraman, Wooster, OH (US);
Irina Shiyanovskaya, Stow, OH (US);
Kent Displays Incorporated, Kent, OH (US);
Kent State University, Kent, OH (US);
Abstract
A photodisplay device in which an optically addressed image can be viewed indefinitely, erased and readdressed with a new image is disclosed. Optically responsive reversible photochiral materials are incorporated into a bistable cholesteric liquid crystal in an electrooptic display cell. A high resolution image exposed on the cell is fixed by a low voltage pulse to unpatterned electrodes and can be, at a later time, erased with a high voltage pulse.