標題: Design and Implementation of Capacitive Sensor Readout Circuit on Glass Substrate for Touch Panel Applications
作者: Wang, Tzu-Ming
Ker, Ming-Dou
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
公開日期: 2011
摘要: A capacitive sensor readout circuit on glass substrate for touch panel applications has been designed and fabricated in a 3-mu m low temperature poly-silicon (LTPS) technology. In this work, the small voltage difference from capacitance change due to the touch event on panel is amplified by the switch-capacitor (SC) technique. In order to reduce the effect from device characteristic variation in LTPS process, the proposed readout circuit applies the corrected double-sampling (CDS) technique to reduce the offset originated from LTPS process variation. To enhance the resolution of touch panel, a 4-bit analog-to-digital converter is utilized to identify the different touch area conditions.
URI: http://hdl.handle.net/11536/15481
ISBN: 978-1-4244-8499-7
期刊: 2011 INTERNATIONAL SYMPOSIUM ON VLSI DESIGN, AUTOMATION AND TEST (VLSI-DAT)
起始頁: 269
結束頁: 272
Appears in Collections:Conferences Paper