Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1998-09-18
2000-07-11
Dougherty, Thomas M.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
H01L 4118
Patent
active
060877618
ABSTRACT:
The present invention discloses an ultrasonic phased array transducer with an ultralow backfill and a method for making. The ultrasonic phased array includes a low density backfill material having an ultralow acoustic impedance. The backfill material is either an aerogel, a carbon aerogel, an xerogel, or a carbon xerogel. A piezoelectric ceramic material and two matching layers are bonded to the backfill material. In one embodiment, a plurality of interconnect vias are formed in the backfill material with conducting material deposited in the vias. A portion of the bonded matching layers, the piezoelectric ceramic material, and the backfill material have isolation cuts therethrough to form an array of electrically and acoustically isolated individual elements. In a second embodiment, the backfill material is bonded to an electronic layer at a face opposite to the piezoelectric ceramic material and the matching layers. Then isolation cuts are made through the matching layers, the piezoelectric ceramic material, and the backfill material, to form an array of electrically and acoustically isolated individual elements.
REFERENCES:
patent: 4211949 (1980-07-01), Brisken et al.
patent: 5163436 (1992-11-01), Saitoh et al.
patent: 5297553 (1994-03-01), Sliwa et al.
patent: 5311095 (1994-05-01), Smith et al.
patent: 5392259 (1995-02-01), Bolorforosh
patent: 5655538 (1997-08-01), Lorraine et al.
patent: 5748758 (1998-05-01), Menasco et al.
patent: 5810009 (1998-09-01), Mine et al.
patent: 5852860 (1998-12-01), Lorraine et al.
Lorraine Peter William
Smith Lowell Scott
Breedlove Jill M.
Dougherty Thomas M.
General Electric Company
Goldman David C.
LandOfFree
Ultrasonic phased array transducer with an ultralow impedance ba does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic phased array transducer with an ultralow impedance ba, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic phased array transducer with an ultralow impedance ba will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-545039