• DocumentCode
    1989189
  • Title

    A Novel Capacitive Sensing Scheme for Fingerprint Acquisition

  • Author

    Sheu, Meng-Lieh ; Lai, Chih-Kuan ; Hsu, Wei-Hung ; Yang, Hong-Ming

  • Author_Institution
    Department of Electrical Engineering, National Chi Nan University, Puli, Taiwan; Himax Technology, Inc Hsinhua, Tainan, Taiwan. sheu@ncnu.edu.tw
  • fYear
    2005
  • fDate
    19-21 Dec. 2005
  • Firstpage
    627
  • Lastpage
    630
  • Abstract
    In this paper, a novel capacitive sensing scheme for fingerprint acquisition is presented. Based on capacitive fingerprint sensing, a novel capacitive sensor structure and readout circuit are proposed to grab the induced capacitance by the finger directly touched to the sensor plate. A test array of 32x32 capacitive fingerprint sensors is implemented in a standard CMOS 0.35-μm technology. Including the sensor array and peripheral digital control circuit, the chip area is 2550x1890μm2.
  • Keywords
    CMOS technology; Capacitive sensors; Capacitors; Circuits; Fingerprint recognition; Fingers; Parasitic capacitance; Sensor arrays; Switches; Voltage;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Electron Devices and Solid-State Circuits, 2005 IEEE Conference on
  • Print_ISBN
    0-7803-9339-2
  • Type

    conf

  • DOI
    10.1109/EDSSC.2005.1635352
  • Filename
    1635352
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1989189