Touch-screen system and driving method thereof

Touch-screen system and driving method thereof

  • CN 102,073,423 B
  • Filed: 06/23/2010
  • Issued: 05/25/2016
  • Est. Priority Date: 11/24/2009
  • Status: Active Grant
First Claim
Patent Images

1. a touch-screen system, comprising:

  • Touch panel, many detection lines that comprise many drive wires, intersect with described drive wire, and formIn multiple detecting units at the intersection region place of described drive wire and described detection line;

    Drive circuit, for applying driving signal to described drive wire order;

    Testing circuit, for surveying first detection signal corresponding with the variation of the mutual capacitance of described detecting unit,To produce second detection signal corresponding with described variation, wherein said mutual capacitance is formed on described drive wireAnd in the detecting unit at the intersection region place between described detection line;

    Processor, determines touch location for described the second detection signal based on from described testing circuit;

    WithAndActive probe, separates with described touch panel, and is configured to close at described active probe or connectsWhile touching described touch panel, drive signal synchronously to export active probe electricity with one in described driving signal, this driving signal is applied in described drive wire and is connected in described detecting unit with described active tactileThe drive wire of the detecting unit of pin vicinity,Wherein said active probe comprises;

    Electric-field sensor, for detection of this electric field that drives signal to produce;

    Signal generator, for generation of the signal corresponding with this electric field that drives signal to produce;

    Electric transmitter, amplifies for the signal that described signal generator is produced, described active to exportContact pilotage electric field;

    AndPower supply, for powering to described electric-field sensor, described signal generator and described electric transmitter.

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