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:
Sep. 17, 2013
Filed:
Feb. 05, 2009
Jae-hoon Lee, Seoul, KR;
Bong-hyun You, Yongin-si, KR;
Byoung-jun Lee, Cheonan-si, KR;
Jai-hyun Koh, Anyang-si, KR;
Jae-Hoon Lee, Seoul, KR;
Bong-Hyun You, Yongin-si, KR;
Byoung-Jun Lee, Cheonan-si, KR;
Jai-Hyun Koh, Anyang-si, KR;
Samsung Display Co., Ltd., Yongin, KR;
Abstract
A touch sensor is installed inside a liquid crystal display panel to sense a touch operation and includes a light sensing part including a photodiode, a capacitance sensing part including a liquid crystal capacitor, and a sensing signal output part. The light sensing part generates a control signal corresponding to a variation in the amount of external light when the liquid crystal display panel is touched. The capacitance sensing part varies the control signal based on a variation in the capacitance of the liquid crystal capacitor when the liquid crystal display panel is touched. The sensing signal output part generates a sensing signal in response to the control signal and determines an output timing of the sensing signal.