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:
Mar. 09, 2021
Filed:
Dec. 18, 2019
Silicon Works Co., Ltd., Daejeon, KR;
Hee Jin Lee, Daejeon, KR;
Jae Hwan Lee, Daejeon, KR;
Jeong Kwon Nam, Daejeon, KR;
Kyu Tae Lee, Daejeon, KR;
Hyun Soo Chung, Daejeon, KR;
Jin Yoon Jang, Daejeon, KR;
Hee Ra Yun, Daejeon, KR;
Kyung Min Shin, Daejeon, KR;
Mun Seok Kang, Daejeon, KR;
SILICON WORKS CO., LTD., Daejeon, KR;
Abstract
A touch sensing device of a current driving type, which separately drives a parasitic capacitor by using an electric charge controller, includes a parasitic capacitance charger connected to a touch sensing line to charge a parasitic capacitor of a touch electrode connected to the touch sensing line with a predetermined charging current during a charging period and a sensing unit connected to the touch sensing line during a first driving period to drive a capacitor of the touch electrode with a first driving current corresponding to a difference voltage between a first voltage, charged into the parasitic capacitor when a touch does not occur, and a second voltage charged into the parasitic capacitor when a touch occurs and to sense a first touch voltage of the capacitor based on the first driving current during a first sensing period.