Piezoelectric element and method for manufacturing piezoelectric element
AssigneeDaegu Gyeongbuk Institute of Science and Technology
InventorsKyung In Jang, Ho Hyun Keum, Jun Woo Yea
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Abstract
The disclosure provides a piezoelectric element and a method for manufacturing a piezoelectric element. The disclosure provides the piezoelectric element comprising: a base layer, a piezoelectric layer which is disposed on one surface of the base layer, and in which upwardly curved convex portions and downwardly curved concave portions are continuously disposed along a first direction; and contact members which are disposed on the concave portions of the piezoelectric layer and on the one surface of the base layer to connect the piezoelectric layer to the base layer.
Claims15
A piezoelectric element comprising:
- a base layer;
- a piezoelectric layer which is disposed on one surface of the base layer, and in which upwardly curved convex portions and downwardly curved concave portions are continuously disposed along a first direction;
- and
- contact members which are disposed on the concave portions of the piezoelectric layer and on the one surface of the base layer to connect the piezoelectric layer to the base layer,
- wherein the piezoelectric layer comprises:
- a first electrode disposed adjacent to the base layer, and having a first (a) electrode terminal and a first (b) electrode terminal spaced apart from each other;
- a second electrode comprising a second (a) electrode terminal having a portion overlapping the first (a) electrode terminal and a second (b) electrode terminal having a portion overlapping the first (b) electrode terminal;
- and
- a piezoelectric body disposed between the first electrode and the second electrode,
- wherein a gap between the first (a) electrode terminal and the first (b) electrode terminal is smaller than a gap between the second (a) electrode terminal and the second (b) electrode terminal.
A piezoelectric element comprising:
- a base layer;
- a piezoelectric layer which is disposed on one surface of the base layer, and in which upwardly curved convex portions and downwardly curved concave portions are continuously disposed along a first direction;
- and
- contact members which are disposed on the concave portions of the piezoelectric layer and on the one surface of the base layer to connect the piezoelectric layer to the base layer,
- wherein the piezoelectric layer comprises:
- a first electrode disposed adjacent to the base layer, and having a first (a) electrode terminal and a first (b) electrode terminal spaced apart from each other;
- a second electrode comprising a second (a) electrode terminal having a portion overlapping the first (a) electrode terminal and a second (b) electrode terminal having a portion overlapping the first (b) electrode terminal;
- and
- a piezoelectric body disposed between the first electrode and the second electrode, and
- wherein the first electrode and the second electrode are located at an area where the contact members are absent.
A manufacturing method of a piezoelectric element, the method comprising:
- forming a piezoelectric layer having a first electrode, a second electrode, and a piezoelectric body;
- disposing contact members at a preset position of the piezoelectric layer;
- attaching the contact members to a base layer;
- applying a tensile force to the base layer;
- and
- forming a curvature at the piezoelectric layer,
- wherein the forming the curvature in the piezoelectric layer comprises:
- connecting the piezoelectric layer to the base layer by attaching the contact members to a surface of the base layer;
- and
- forming curvature in the piezoelectric layer by removing the tensile force applied to the base layer,
- wherein the first electrode comprises a first (a) electrode terminal and a first (b) electrode terminal spaced apart from each other, and the second electrode comprises a second (a) electrode terminal having a portion overlapping the first (a) electrode terminal and a second (b) electrode terminal having a portion overlapping the first (b) electrode terminal, and
- wherein the first electrode and the second electrode are located at an area where the contact members are absent.
Dependencies are inferred from the claim text.