Process for producing polymeric piezoelectric elements and the article formed thereby
Piezoelectric key board switch
Polymeric piezoelectric key actuated device Patent #: 3940637
ApplicationNo. 06/028822 filed on 04/10/1979
US Classes:310/366, More than two310/339, Voltage, spark or current generator310/800, PIEZOELECTRIC POLYMERS (E.G., MYLAR, PVDF)341/22, Including keyboard or keypad341/34Pressure sensitive actuation
ExaminersPrimary: Budd, Mark O.
Attorney, Agent or Firm
International ClassesH01L 37/02 (20060101)
H01L 41/113 (20060101)
H01L 37/00 (20060101)
Foreign Application Priority Data1978-04-10 JP
AbstractAn input element for use as a transducer in keyboards is disclosed, which utilizes a polymeric material having piezoelectric or pyroelectric property as a stimulus-receiving portion of the element. The element has a plurality of stimulus-receiving portions. One face of each of stimulus-receiving portions has mutually independent electrodes, of which one is for detecting signal and another is for earthing, and another face of each stimulus-receiving portions has mutually independent electrodes, of which one is for detecting signal and another is for earthing. The signal-detecting electrode on the one face is disposed corresponding to the earthing electrode on the another face.