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. 08, 2015
Filed:
Jan. 24, 2011
Applicant:
Jefferson Y. Han, Holliswood, NY (US);
Inventor:
Jefferson Y. Han, Holliswood, NY (US);
Assignee:
PERCEPTIVE PIXEL, INC., Redmond, WA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/042 (2006.01); G06F 3/0488 (2013.01);
U.S. Cl.
CPC ...
G06F 3/0488 (2013.01); G06F 3/0421 (2013.01); G06F 2203/04108 (2013.01); G06F 2203/04808 (2013.01);
Abstract
A matrix of light emitting diodes is positioned behind a liquid crystal layer of a display device. The light emitting diodes operate in both light emitting and light detecting modes. Consequently, the display device is able to sense objects or fingers approaching or in contact with a front display surface of the display device based on changes in incident light on the matrix that are observed by one or more of the light emitting diodes operating in the light detecting mode.