Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal
Patent
1998-05-28
2000-05-23
Mintel, William
Active solid-state devices (e.g., transistors, solid-state diode
Responsive to non-electrical signal
257415, 257417, 73723, 73724, 73725, 73726, 73727, 73DIG4, 438 50, 438 51, H01L 2714, H01L 2982, H01L 2984
Patent
active
060668822
ABSTRACT:
A semiconductor pressure detecting device which effectively reduces stress that occurs on a base member due to welding between cap and the base member or any external load. The semiconductor pressure detecting device includes a semiconductor sensor element capable of detecting a strain and/or stress that occurs on a thin-walled pressure receiving portion; a pedestal seat for joining and supporting the semiconductor sensor element; a base member for joining and supporting the pedestal seat; and a cap member welded and joined to the base member so as to cover the base member, the pedestal seat and the semiconductor sensor element. A fluid pressure that acts on a pressure chamber is detected by the semiconductor sensor element, the base member has a body portion of a specified thickness and a thin-walled flange portion formed integrally with an outer circumferential portion of the body portion, a flange portion is provided at an opening end of the cap member and is welded and joined to the flange portion of the base member, a thickness of the flange portion of the base member being set substantially equal to or less than a thickness of the flange portion of the cap member.
REFERENCES:
patent: 4843454 (1989-06-01), Kato et al.
patent: 5050838 (1991-09-01), Beatty et al.
patent: 5408885 (1995-04-01), Araki
patent: 5461922 (1995-10-01), Koen
patent: 5629538 (1997-05-01), Lipphardt et al.
patent: 5756899 (1998-05-01), Ugai et al.
patent: 5852320 (1998-12-01), Ichihasi
Mintel William
Mitsubishi Denki & Kabushiki Kaisha
LandOfFree
Semiconductor pressure detecting 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 Semiconductor pressure detecting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor pressure detecting device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1838970