{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,5]],"date-time":"2026-06-05T04:29:57Z","timestamp":1780633797630,"version":"3.54.1"},"reference-count":15,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2018,1,19]],"date-time":"2018-01-19T00:00:00Z","timestamp":1516320000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this paper, we introduce a transparent fingerprint sensing system using a thin film transistor (TFT) sensor panel, based on a self-capacitive sensing scheme. An armorphousindium gallium zinc oxide (a-IGZO) TFT sensor array and associated custom Read-Out IC (ROIC) are implemented for the system. The sensor panel has a 200 \u00d7 200 pixel array and each pixel size is as small as 50 \u03bcm \u00d7 50 \u03bcm. The ROIC uses only eight analog front-end (AFE) amplifier stages along with a successive approximation analog-to-digital converter (SAR ADC). To get the fingerprint image data from the sensor array, the ROIC senses a capacitance, which is formed by a cover glass material between a human finger and an electrode of each pixel of the sensor array. Three methods are reviewed for estimating the self-capacitance. The measurement result demonstrates that the transparent fingerprint sensor system has an ability to differentiate a human finger\u2019s ridges and valleys through the fingerprint sensor array.<\/jats:p>","DOI":"10.3390\/s18010293","type":"journal-article","created":{"date-parts":[[2018,1,22]],"date-time":"2018-01-22T04:51:13Z","timestamp":1516596673000},"page":"293","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Transparent Fingerprint Sensor System for Large Flat Panel Display"],"prefix":"10.3390","volume":"18","author":[{"given":"Wonkuk","family":"Seo","sequence":"first","affiliation":[{"name":"Ulsan National Institute of Science and Technology, School of Electrical &amp; Electronic Engineering, Ulsan 44919, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jae-Eun","family":"Pi","sequence":"additional","affiliation":[{"name":"Electronics and Telecommunications Research Institute, Reality Device Research Division, Daejeon 34129, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sung","family":"Cho","sequence":"additional","affiliation":[{"name":"Electronics and Telecommunications Research Institute, Reality Device Research Division, Daejeon 34129, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seung-Youl","family":"Kang","sequence":"additional","affiliation":[{"name":"Electronics and Telecommunications Research Institute, Reality Device Research Division, Daejeon 34129, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seong-Deok","family":"Ahn","sequence":"additional","affiliation":[{"name":"Electronics and Telecommunications Research Institute, Reality Device Research Division, Daejeon 34129, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chi-Sun","family":"Hwang","sequence":"additional","affiliation":[{"name":"Electronics and Telecommunications Research Institute, Reality Device Research Division, Daejeon 34129, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ho-Sik","family":"Jeon","sequence":"additional","affiliation":[{"name":"CrucialTec, Pankyo 13486, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jong-Uk","family":"Kim","sequence":"additional","affiliation":[{"name":"CrucialTec, Pankyo 13486, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5415-8768","authenticated-orcid":false,"given":"Myunghee","family":"Lee","sequence":"additional","affiliation":[{"name":"Ulsan National Institute of Science and Technology, School of Electrical &amp; Electronic Engineering, Ulsan 44919, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2018,1,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"90","DOI":"10.1145\/328236.328110","article-title":"Biometrics identification","volume":"43","author":"Jain","year":"2000","journal-title":"Commun. 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