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REDUCING BENDING EFFECTS IN TOUCH SENSOR DEVICES

  • US 20130271160A1
  • Filed: 03/13/2013
  • Published: 10/17/2013
  • Est. Priority Date: 04/17/2012
  • Status: Active Grant
First Claim
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1. A capacitive image sensor for detecting an input object, comprising:

  • a first substrate having a first side;

    a second substrate displaced from the first substrate to define a compressible region between the first substrate and the second substrate, wherein the first substrate is deflectable relative to the second substrate between a first position in which the compressible region has a first thickness and a second position in which the compressible region has a second thickness that is less than the first thickness;

    a transmitter electrode disposed on the first substrate;

    a receiver electrode disposed on the first substrate; and

    a bending effect electrode disposed on the first substrate and disposed between the transmitter electrode and the receiver electrode,wherein when the first substrate is in the first position, a plurality of field lines extends from the transmitter electrode through the compressible region and terminates on the bending effect electrode, and when the first substrate is in the second position, the plurality of field lines extends from the transmitter electrode through the compressible region and terminates on the second substrate.

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