Title:
超音波振動子およびその製造方法、超音波探触子ならびに超音波撮像装置
Document Type and Number:
Japanese Patent JP6641723
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an ultrasonic transducer having air bubbles uniformly scattered in a joint material filled in narrow grooves, and to provide an ultrasonic probe and an ultrasonic imaging apparatus including the ultrasonic transducer.SOLUTION: An ultrasonic transducer comprises: a piezoelectric body; grooves which partition the piezoelectric body into elements; and a joint material which is filled in the grooves. The joint material includes air bubbles, and average porosity of the joint material in the ultrasonic transducer is 10% or more. Furthermore, variations of porosity in any region at a depth of 40 μm of the grooves are within ±15% with respect to the average porosity.SELECTED DRAWING: Figure 13
Inventors:
Kaoru Okada
Yuichi Nishikubo
Yuichi Nishikubo
Application Number:
JP2015095629A
Publication Date:
February 05, 2020
Filing Date:
May 08, 2015
Export Citation:
Assignee:
Konica Minolta Co., Ltd.
International Classes:
H04R17/00; A61B8/14; H01L41/09; H01L41/113; H01L41/312; H01L41/335; H04R31/00
Domestic Patent References:
| JP2003309297A | ||||
| JP5168637A | ||||
| JP58006462A | ||||
| JP2007235795A | ||||
| JP2011071842A | ||||
| JP2010021812A |
Foreign References:
| WO2011083611A1 |
Attorney, Agent or Firm:
Washeda International Patent Office
Takashi Kiso
Takashi Kiso