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Paper Abstract and Keywords
Presentation 2014-07-03 10:25
Design of 1mm-Pitch 80x80-Channel 322Hz-Frame-Rate Touch Sensor with Two-Step Dual-Mode Capacitance Scan
Noriyuki Miura (Kobe Univ.), Shiro Dosho (Pana.), Daisuke Fujimoto, Takuya Kiriyama (Kobe Univ.), Hiroyuki Tezuka, Takuji Miki (Pana.), Makoto Nagata (Kobe Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) A 1mm-pitch 80x80-channel 322Hz-frame-rate capacitive touch sensor has been developed. Multiple touch points are detected by a two-step dual-mode capacitance scan to reduce a scan time increased in the high resolution. Row-and-column dedicated parallel ADCs further reduce the scan time. A time-domain counter-based slope ADC suppresses power and area penalty in the parallel ADC. A signal attenuation due to a sensor capacitance reduction in the high resolution is compensated by thorough noise-reduction techniques in the sensor analog frontend. A prototype in 0.35um CMOS demonstrates 41dB SNR with >3x higher pitch resolution, >10x faster touch-point scan, 12x and 4x higher energy and area efficiency to the-state-of-the-art touch sensors.
Keyword (in Japanese) (See Japanese page) 
(in English) capacitance / touch sensor / high resolution / / / / /  
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Conference Information
Committee IST IEICE-ICD  
Conference Date 2014-07-03 - 2014-07-04 
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Place (in English)  
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Topics (in English) Analog circuit, Mixed signal, RF and sensor I/F. 
Paper Information
Registration To IEICE-ICD 
Conference Code 2014-07-ICD-IST 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design of 1mm-Pitch 80x80-Channel 322Hz-Frame-Rate Touch Sensor with Two-Step Dual-Mode Capacitance Scan 
Sub Title (in English)  
Keyword(1) capacitance  
Keyword(2) touch sensor  
Keyword(3) high resolution  
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1st Author's Name Noriyuki Miura  
1st Author's Affiliation Kobe University (Kobe Univ.)
2nd Author's Name Shiro Dosho  
2nd Author's Affiliation Panasonic (Pana.)
3rd Author's Name Daisuke Fujimoto  
3rd Author's Affiliation Kobe University (Kobe Univ.)
4th Author's Name Takuya Kiriyama  
4th Author's Affiliation Kobe University (Kobe Univ.)
5th Author's Name Hiroyuki Tezuka  
5th Author's Affiliation Panasonic (Pana.)
6th Author's Name Takuji Miki  
6th Author's Affiliation Panasonic (Pana.)
7th Author's Name Makoto Nagata  
7th Author's Affiliation Kobe University (Kobe Univ.)
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Speaker Author-2 
Date Time 2014-07-03 10:25:00 
Presentation Time 25 minutes 
Registration for IEICE-ICD 
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Volume (vol) vol.38 
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