Detecting device
AssigneeJapan Display Inc.
InventorHiroumi Kinjo
Life of this patent
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Abstract
A detecting device includes a plurality of ultrasonic transducers that transmit and receive ultrasonic waves. The detecting device includes a laminate, and a frame layer stacked on at least one face of a first face of the laminate and a second face opposite the first face. The laminate includes a flexible substrate, a circuit layer including a plurality of first electrodes and at least one second electrode, the circuit layer being stacked on the flexible substrate, and a piezoelectric layer stacked on the circuit layer. One of the ultrasonic transducers includes at least one of the first electrodes that is in contact with the piezoelectric layer, and at least one of the second electrodes that is in contact with the piezoelectric layer, and the frame layer has a cavity at a position that overlaps the first electrode in plan view.
Claims17
A detecting device comprising a plurality of ultrasonic transducers that transmit and receive ultrasonic waves, the detecting device comprising:
- a laminate;
- and
- a frame layer stacked on at least one face of a first face of the laminate and a second face opposite the first face, wherein
- the laminate comprises:
- a flexible substrate;
- a circuit layer comprising a plurality of first electrodes and at least one second electrode, the circuit layer being stacked on the flexible substrate;
- and
- a piezoelectric layer stacked on the circuit layer,
- one of the ultrasonic transducers comprises:
- at least one of the first electrodes that is in contact with the piezoelectric layer;
- and
- at least one of the second electrodes that is in contact with the piezoelectric layer, and
- the frame layer has a cavity at a position that overlaps the first electrode in plan view.
Dependencies are inferred from the claim text.