{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T15:42:43Z","timestamp":1775230963989,"version":"3.50.1"},"reference-count":16,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2023,4,6]],"date-time":"2023-04-06T00:00:00Z","timestamp":1680739200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"ACONIC"},{"name":"IC Design Education Center(IDEC)"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper presents a fully-differential touch screen panel (TSP) self-capacitance sensing (SCS) system with a self-capacitance mismatch calibration technique. Due to the self-capacitance mismatch of TSP, the analog front-end (AFE) of the receiver (RX) circuit suffers from dynamic range degradation and gain limitations, which lead to the signal-to-noise ratio (SNR) loss for the TSP SCS system. The proposed calibration introduces the difference in input resistance and the driving amplifier\u2019s strength between the fully-differential input. Thus, the mismatch effect is efficiently relieved in terms of area and power consumption. The proposed calibration restores the SNR by 19.54 dB even under the worst self-capacitance mismatch case.<\/jats:p>","DOI":"10.3390\/s23073779","type":"journal-article","created":{"date-parts":[[2023,4,7]],"date-time":"2023-04-07T04:04:16Z","timestamp":1680840256000},"page":"3779","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Self Capacitance Mismatch Calibration Technique for Fully-Differential Touch Screen Panel Self Capacitance Sensing System"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4680-7630","authenticated-orcid":false,"given":"Siheon","family":"Seong","sequence":"first","affiliation":[{"name":"School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6397-7324","authenticated-orcid":false,"given":"Sewon","family":"Lee","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sunghyun","family":"Bae","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1500-1404","authenticated-orcid":false,"given":"Minjae","family":"Lee","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"4832","DOI":"10.1109\/JSEN.2018.2830660","article-title":"Capacitive Touch Systems with Styli for Touch Sensors: A Review","volume":"18","author":"Kwon","year":"2018","journal-title":"IEEE Sensors J."},{"key":"ref_2","unstructured":"Luo, Y. (2018, July 31). Liquid Tolerant Capacitive Touch Keypad Design. Available online: https:\/\/www.ti.com\/lit\/pdf\/TIDUE90."},{"key":"ref_3","unstructured":"Kuzo, T., and Kremin, V. (2015). Water Rejection and Wet Finger Tracking Algorithms for Truetouch Panels and Self Capacitance Touch Sensors. (U.S. Patent 8,982,097)."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Lee, C.-J., Park, J.K., Piao, C., Seo, H.E., Choi, J., and Chun, J.H. (2018). Mutual Capacitive Sensing Touch Screen Controller for Ultrathin Display with Extended Signal Passband Using Negative Capacitance. Sensors, 18.","DOI":"10.3390\/s18113637"},{"key":"ref_5","first-page":"1321","article-title":"An Ultra-Compact Low Power Self-Capacitive Touch Screen Readout IC Embedding Reconfigurable Noise Immunity and Current-Driven Capacitance Compensation","volume":"66","author":"Ko","year":"2019","journal-title":"IEEE Trans. Circuits Syst. II Express Briefs"},{"key":"ref_6","unstructured":"Kim, K.D., Kang, S., Choi, Y.K., Lee, K.H., Lee, C.H., Lee, J.C., Choi, M., Ko, K., Jung, J., and Park, N. (2014, January 10\u201313). A fully-differential capacitive touch controller with input common-mode feedback for symmetric display noise cancellation. Proceedings of the 2014 Symposium on VLSI Circuits Digest of Technical Papers, Honolulu, HI, USA."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Park, J., Hwang, Y.H., Oh, J., Song, Y., Park, J.E., and Jeong, D.K. (2019, January 29\u201331). A Compact Self-Capacitance Sensing Analog Front-End for a Touch Detection in Low-Power Mode. 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