基本信息:
- 专利标题: 완화형 강유전 고분자를 이용한 초음파 변환기
- 专利标题(英):Ultrasonic transducer using relaxor ferroelectric polymers
- 专利标题(中):超声波换能器使用松弛铁电聚合物
- 申请号:KR1020120122397 申请日:2012-10-31
- 公开(公告)号:KR101395264B1 公开(公告)日:2014-05-15
- 发明人: 최승태 , 박성태 , 주우언
- 申请人: 울산대학교 산학협력단
- 申请人地址: 울산광역시 남구 대학로 **(무거동)
- 专利权人: 울산대학교 산학협력단
- 当前专利权人: 울산대학교 산학협력단
- 当前专利权人地址: 울산광역시 남구 대학로 **(무거동)
- 代理人: 특허법인태백
- 主分类号: H04R17/00
- IPC分类号: H04R17/00 ; B06B1/06 ; H01L41/047 ; G10K9/122
상기 완화형 강유전 고분자를 이용한 초음파 변환기에 따르면, P(VDF-TrFE-CFE) 또는 P(VDF-TrFE-CTFE)의 완화형 강유전 고분자를 압전 재료로 사용함에 따라 전기-기계 결합계수가 크고 열적 안정성이 높을 뿐만 아니라 높은 감도 및 넓은 대역폭을 제공하여 초음파 변환기의 성능을 크게 향상시킬 수 있는 이점이 있다.
The present invention relates to an ultrasonic transducer using a relaxor ferroelectric polymer. According to the invention, the relaxor ferroelectric polymer material is formed from the subject the piezoelectric layer for performing transmission and reception of ultrasound, a first electrode and a second electrode are respectively stacked on the upper and lower surfaces of the piezoelectric layer and the first to the It includes electrode and the DC voltage for applying a DC bias voltage between the alternating voltage portion to be applied or sensed AC voltage between two electrodes, and the first electrode and the second electrode portion, the piezoelectric layer, wherein the DC bias voltage of the polarization of the internal alignment in the thickness direction at the time of applying electric-provides an ultrasonic transducer using a relaxor ferroelectric polymer which increases the coupling factor (Electromechanical coupling coefficient).
According to the ultrasonic transducer using the relaxor ferroelectric polymer, P (VDF-TrFE-CFE), or P (VDF-TrFE-CTFE) relaxor ferroelectric electricity in accordance with the use of the polymer in the piezoelectric material of the-large thermal stability coupling factor not only high, but also the advantage that can greatly improve the performance of the ultrasound transducer provides high sensitivity and wide bandwidth.
公开/授权文献:
- KR1020140055453A 완화형 강유전 고분자를 이용한 초음파 변환기 公开/授权日:2014-05-09
信息查询:
EspacenetIPC结构图谱:
H | 电学 |
--H04 | 电通信技术 |
----H04R | 扬声器、送话器、唱机拾音器或类似的传感器 |
------H04R17/00 | 压电传感器;电致伸缩传感器 |