Piezoelectric ceramic element and portable device

Details Piezoelectric ceramic element and portable device Piezoelectric ceramic element and portable device

2004-08-27

2008-11-04

Budd, Mark (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S328000

Reexamination Certificate

active

07446458

ABSTRACT:
Piezo-electric ceramic transducer1has upper piezo-electric active layer5and lower piezo-electric active layer6. Upper insulating layer2and lower insulating layer3, between which upper piezo-electric active layer5and lower piezo-electric active layer6are placed, are disposed on both surfaces of piezo-electric ceramic transducer1in a thickness direction thereof. Two electrode pads8and9are disposed on a surface of upper insulating layer2. Electrode pads8and9are connected with upper electrode layers7aand lower electrode layers7bvia connection members12, and voltages are applied to upper piezo-electric active layer5and lower piezo-electric active layer6via electrode pads8and9. Insulating layers2, 3and4and piezo-electric active layers5and6are made of the same material as one another and are integrated by sintering.

REFERENCES:
patent: 3378704 (1968-04-01), Smith et al.
patent: 4237399 (1980-12-01), Sakamoto
patent: 4805057 (1989-02-01), Ogawa et al.
patent: 5103361 (1992-04-01), Nagatsuka et al.
patent: 5118982 (1992-06-01), Inoue et al.
patent: 6172447 (2001-01-01), Ishikawa et al.
patent: 6437488 (2002-08-01), Sube et al.
patent: 6573638 (2003-06-01), Yamamoto
patent: 6747400 (2004-06-01), Maichl et al.
patent: 1299153 (2001-06-01), None
patent: 1430291 (2003-07-01), None
patent: 62-115788 (1987-05-01), None
patent: 03-128681 (1991-05-01), None
patent: 09-264879 (1997-10-01), None
patent: 2003-209302 (2003-07-01), None
“Ultrasonic Electronics Vibration Theory—Basics and Applications”—(edited by Yoshiro Tomikawa, Asakura Publishing Co., Ltd., Feb. 20, 1998, pp. 104-131.
“Mechanical Quality Factor of Multilayer Piezoelectric Ceramic Transducers” (Yashuhiro Sasaki et al., Jpn, Appln. Phys. vol. 40 (2001), Part 1, No. 5B, pp. 3549-3551, May 2001).

Affiliated with

Also associated with

Rating

Piezoelectric ceramic element and portable device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Piezoelectric ceramic element and portable device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezoelectric ceramic element and portable device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4028991