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Key actuating apparatus and key actuation control system

  • US 20080083314A1
  • Filed: 09/04/2007
  • Published: 04/10/2008
  • Est. Priority Date: 09/06/2006
  • Status: Active Grant
First Claim
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1. A key actuating apparatus which actuates a key rotatably supported with respect to a frame comprising a polymer transducer for rotatably moving the key by using a deformation of the polymer transducer, wherein the polymer transducer is substantially formed in a plate shape and comprises:

  • a polymer film which is dielectric and made from an elastically deformable polymer material; and

    a pair of electrodes arranged at both sides of surfaces of the polymer film, and the transducer is deformed corresponding to switching between an application of voltage and a lack of voltage between the electrodes.

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