Sensor device and electronic device
AssigneesMurata Manufacturing Co., Ltd., The School Corporation Kansai University
InventorsYoshiro Tajitsu, Masamichi Ando
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Abstract
A sensor device that includes a film composed of, for example, PLLA; and electrodes for extracting an output voltage from the PLLA film. The electrodes are located on main surfaces of the PLLA film such that the electrodes face each other with at least a portion of the PLLA film being interposed therebetween. The PLLA film has a first side which is fixed, and a second side which is opposite to the first side and is a movable portion. Each of the electrodes is configured to extract an output voltage resulting from an effect of piezoelectric constant d14 provided by shear deformation caused by displacement of the movable portion in a direction parallel to the main surfaces of the PLLA film, whereby an operation involving friction or the like can be sensed.
Claims15
A sensor device comprising:
- a piezoelectric film which contains, as a main component, a chiral polymer including chiral molecules as a unit and in which a main orientation direction of said chiral molecules is in a direction parallel to main surfaces of the piezoelectric film, said piezoelectric film having a fixed portion at which displacement of said piezoelectric film is fixed and a movable portion;
- and
- shear deformation detecting electrodes constructed to extract an output voltage resulting from shear deformation of said piezoelectric film caused by the displacement of said movable portion, said shear deformation detecting electrodes being located on the main surfaces of said piezoelectric film such that said shear deformation detecting electrodes face each other with at least a portion of said piezoelectric film being interposed therebetween.
Dependencies are inferred from the claim text.