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. 26, 2017
Filed:
Apr. 02, 2014
Applicant:
Kent Displays Incorporated, Kent, OH (US);
Inventors:
Don Davis, Conneaut Lake, PA (US);
Forrest Nicholson, Kent, OH (US);
Assignee:
Kent Displays Inc., Kent, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1333 (2006.01); G02F 1/137 (2006.01); G02F 1/1334 (2006.01); G06F 3/041 (2006.01);
U.S. Cl.
CPC ...
G02F 1/13718 (2013.01); G02F 1/13338 (2013.01); G06F 3/0412 (2013.01); G02F 1/1334 (2013.01); G02F 2001/133374 (2013.01); H01L 2223/544 (2013.01);
Abstract
A liquid crystal display with an identifier such as a watermark, serial number, logo or other graphic design, is disclosed. The identifiers can be read electronically or with the human eye. Methods are described for fabricating identifiers on cholesteric writing tablets in particular, with varying shades of gray and hence different degrees of visibility. The identifiers are permanent and not erased when a liquid crystal image on the display is erased.