Two-Stage Charge Sensing Circuit for a Mutual-Capacitive Touch Screen Panel

被引：0
|
作者：
Cho, Hoshin [1 ]
Lee, Sang-Jin [1 ]
Kim, Seok-Man [1 ]
Cheong, Cha-Keon [2 ]
Cho, Kyoungrok [1 ]
机构：
[1] Chungbuk Natl Univ, Coll Elect & Comp Engn, Cheongju, South Korea
[2] Hoseo Univ, Coll Engn, Dept Syst Control Engn, Cheonan, South Korea
来源：
2013 IEEE INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS (ICCE) | 2013年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we introduce a new charge sensing circuit for a mutual-capacitive touch screen panel (TSP). The circuit senses charges in two stages: a sensing stage and an evaluation stage when the TSP is touched or untouched. This method establishes easier recognition of a touch event on the TSP and reduces the size of the on-chip sensing capacitors. The dynamic sensing range of this TSP is improved by 38% over that of a conventional TSP.
引用
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页码：452 / +
页数：2
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