• DocumentCode
    1690762
  • Title

    Two-stage charge sensing circuit for a mutual-capacitive touch screen panel

  • Author

    Hoshin Cho ; Sang-Jin Lee ; Seok-Man Kim ; Cha-Keon Cheong ; Kyoungrok Cho

  • Author_Institution
    Coll. of Electr. & Comput. Eng., Chungbuk Nat. Univ., Cheongju, South Korea
  • fYear
    2013
  • Firstpage
    452
  • Lastpage
    453
  • Abstract
    In this paper, we introduce a new charge sensing circuit for a mutual-capacitive touch screen panel (TSP). The circuit senses charges in two stages: a sensing stage and an evaluation stage when the TSP is touched or untouched. This method establishes easier recognition of a touch event on the TSP and reduces the size of the on-chip sensing capacitors. The dynamic sensing range of this TSP is improved by 38% over that of a conventional TSP.
  • Keywords
    capacitive sensors; charge measurement; touch sensitive screens; TSP; dynamic sensing range; evaluation stage; mutual-capacitive touch screen panel; on-chip sensing capacitor; touch event recognition; two-stage charge sensing circuit; Capacitance; Capacitors; Computer architecture; Educational institutions; Fingers; Sensors; TV;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Consumer Electronics (ICCE), 2013 IEEE International Conference on
  • Conference_Location
    Las Vegas, NV
  • ISSN
    2158-3994
  • Print_ISBN
    978-1-4673-1361-2
  • Type

    conf

  • DOI
    10.1109/ICCE.2013.6486971
  • Filename
    6486971
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1690762