Transducer and ultrasonic probe having the same
The present disclosure provides a transducer for generating ultrasonic waves to detect an object and an ultrasonic probe using the same. The transducer includes a piezoelectric layer. The piezoelectric layer has a first surface and a second surface opposite to the first surface. The first surface is farther from the object than the second surface and includes a curved structure protruded along a first direction away from the object. The ultrasonic probe includes a handle component and a transducer. The transducer is arranged at one end of the handle component.
1 . A transducer for generating ultrasonic waves to detect an object, wherein the transducer comprises:
a piezoelectric layer having a first surface and a second surface opposite to the first surface, wherein the first surface is farther from the object than the second surface and comprises a curved structure protruded along a first direction away from the object, the first surface further has a flat structure formed outside the curved structure, and the flat structure and the curved structure are connected to each other to co-form the first surface of the piezoelectric layer.
2 . The transducer according to claim 1 , further comprising a first matching layer arranged on the second surface.
3 . The transducer according to claim 1 , further comprising a lens element, wherein the lens element is arranged on a peripheral of the piezoelectric layer and has a lens curved surface protruded along a second direction towards the object.
4 . The transducer according to claim 3 , wherein the lens element is formed of a silicone material or a glass material.
5 . The transducer according to claim 1 , further comprising a flexible circuit board, wherein the flexible circuit board and the piezoelectric layer are connected via the first surface.
6 . The transducer according to claim 1 , further comprising an adhesive layer, wherein the adhesive layer is arranged on the first surface and covers the curved structure.
7 . The transducer according to claim 1 , wherein the piezoelectric layer is formed through the arrangement of a plurality of piezoelectric elements and at least a part of the piezoelectric elements have different thicknesses to form the curved structure.
8 . The transducer according to claim 1 , wherein a curvature of the curved structure is configured to be corresponding to a focal position of the transducer.
9 . An ultrasonic probe for detecting an object, wherein the ultrasonic probe comprises:
a handle component; and
a transducer arranged at one end of the handle component, wherein the transducer comprises:
a piezoelectric layer having a first surface and a second surface opposite to the first surface, wherein the first surface is farther from the object than the second surface and comprises a curved structure protruded along a first direction away from the object, the first surface further has a flat structure formed outside the curved structure, and the flat structure and the curved structure are connected to each other to co-form the first surface of the piezoelectric layer.
10 . The ultrasonic probe according to claim 9 , wherein the transducer further comprises a first matching layer arranged on the second surface.
11 . The ultrasonic probe according to claim 9 , wherein the transducer further comprises a lens element, which is arranged on the peripheral of the piezoelectric layer and has a lens curved surface protruded along a second direction towards the object.
12 . The ultrasonic probe according to claim 11 , wherein the lens element is formed of a silicone material or a glass material.
13 . The ultrasonic probe according to claim 9 , wherein the transducer further comprises a flexible circuit board, the flexible circuit board and the piezoelectric layer are connected via the first surface.
14 . The ultrasonic probe according to claim 9 , wherein the transducer further comprises an adhesive layer, which is arranged on the first surface and covers the curved structure.
15 . The ultrasonic probe according to claim 9 , wherein the piezoelectric layer is formed by an arrangement of a plurality of piezoelectric elements, and at least a part of the piezoelectric elements have different thicknesses to form the curved structure.
16 . The ultrasonic probe according to claim 9 , wherein a curvature of the curved structure is configured to be corresponding to a focal position of the transducer.