Metal working – Piezoelectric device making
Patent
1985-12-30
1987-06-30
Hall, Carl E.
Metal working
Piezoelectric device making
29 2541, 310338, 361277, 361281, 361283, H01L 4122, H01G 700
Patent
active
046759603
ABSTRACT:
An electrically variable three terminal monomorphic piezoelectric capacitor is manufactured with thick or thin film hybrid microelectronic circuit technology. A first capacitor plate and a ridge, which substantially surrounds and extends above the first capacitor plate, are formed on the surface of a substrate. A monomorphic piezoelectric wafer having a control plate and a second capacitor plate on opposing surfaces is bonded to the upper surface of the ridge. During bonding, a force is applied at the center of the wafer which fixes a permanent bow in the wafer in the direction of the first capacitor plate. A four terminal monomorphic embodiment and three and four terminal bimorphic embodiments are also described.
REFERENCES:
patent: 2243921 (1941-06-01), Rust et al.
patent: 2321285 (1943-06-01), Ehret et al.
patent: 2368643 (1945-02-01), Crosby
patent: 2633543 (1953-03-01), Howatt
patent: 2677799 (1954-05-01), Foster et al.
patent: 3646413 (1972-02-01), Oomen
patent: 3949246 (1976-04-01), Lohrmann
patent: 4426406 (1984-01-01), Brooks et al.
patent: 4467394 (1984-08-01), Grantham et al.
patent: 4490772 (1984-12-01), Blickstein
patent: 4530029 (1985-07-01), Beristain
Downey Joseph T.
Hall Carl E.
McKinley Martin J.
Motorola Inc.
Nichols Daniel K.
LandOfFree
Method of manufacturing an electrically variable piezoelectric h does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of manufacturing an electrically variable piezoelectric h, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing an electrically variable piezoelectric h will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-440066