Invention Grant
- Patent Title: Touch sensing system and method for driving the same by changing a frequency of a resonant inductive signal
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Application No.: US14528569Application Date: 2014-10-30
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Publication No.: US09927929B2Publication Date: 2018-03-27
- Inventor: Dongjo Park , Sojung Jung
- Applicant: LG DISPLAY CO., LTD.
- Applicant Address: KR Seoul
- Assignee: LG DISPLAY CO., LTD.
- Current Assignee: LG DISPLAY CO., LTD.
- Current Assignee Address: KR Seoul
- Agency: Dentons US LLP
- Priority: KR10-2013-0131882 20131101
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/041

Abstract:
A touch sensing system and a method for driving the same. The touch sensing system includes a pen with a resonant circuit embedded therein, XY electrodes including X electrodes and Y electrodes substantially perpendicular to the X electrodes, an antenna surrounding the XY electrodes, and a first touch driving circuit. The first touch driving circuit supplies a resonant inductive signal to the XY electrodes, analyzes a resonance signal received through the antenna, and decides a location and a pen pressure of the pen. The resonant inductive signal includes N periods each having a different duration, and wherein N is a positive integer equal to or greater than 2.
Public/Granted literature
- US20150123940A1 TOUCH SENSING SYSTEM AND METHOD FOR DRIVING THE SAME Public/Granted day:2015-05-07
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