P-178: Design of On-Panel Readout Circuit for Touch Panel Application

P-178: Design of On-Panel Readout Circuit for Touch Panel Application

An on‐panel readout circuit for touch panel application has been designed and fabricated in a 3‐μm low temperature poly‐Silicon (LTPS) technology. The minimum detectable voltage difference of the proposed circuit is 30 mV. The switch‐capacitor technique is applied to amplify the voltage difference f...

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Veröffentlicht in:SID International Symposium Digest of technical papers 2010-05, Vol.41 (1), p.1933-1936
Hauptverfasser: Wang, Tzu-Ming, Ker, Ming-Dou, Li, Yu-Hsuan, Kuo, Chung-Hung, Li, Chun-Huai, Hsieh, Yao-Jen, Liu, Chun-Ting
Format: Artikel
Sprache:eng
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Zusammenfassung:An on‐panel readout circuit for touch panel application has been designed and fabricated in a 3‐μm low temperature poly‐Silicon (LTPS) technology. The minimum detectable voltage difference of the proposed circuit is 30 mV. The switch‐capacitor technique is applied to amplify the voltage difference from capacitance change due to touch panel. The corrected double‐sampling (CDS) technique is also employed to reduce the offset originated from process variation.
ISSN:0097-966X
2168-0159
DOI:10.1889/1.3500398