Patent US4972265A successfully refreshed from Google Patents.
Patent US4829364A successfully refreshed from Google Patents.
US4829364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device
Assignee: Mitsubishi Electric Corp
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Filing: 1986-11-21
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Granted: 1989-05-09
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Expires: 2006-11-21
Abstract
Abstract In a semicondur device comprising a semiconductor element, a pair of electrodes provided on the opposite sides of the semiconductor element, and a cylindrical member provided to surround the semiconductor element and to be in engagement with the pair of electrodes, each of the electrodes has a thread portion on its outer perphery, and the cylindrical member has a thread portion on its inner periheral surface screwed onto each of the thread portions of the electrodes, thereby to provide a hermetic seal for the semiconductor element.
Inventors
- 👤 Mituo Ohdate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:15
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/138; H10W72/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
85 words
A semiconductor device comprising a semiconductor element, a pair of electrodes provided on the opposite sides of the semiconductor element, and a cylindrical member provided to surround the semiconductor element and to be in engagement with the pair of electrodes, each of the electrodes having a thread portion on its outer periphery, and the cylindrical member having a thread portion on its inner peripheral surface screwed onto each of the thread portions of the electrodes, thereby to provide a hermetic seal for the semiconductor element.
Claim 2
Dependent Claim
85 words
A semiconductor device comprising a semiconductor element, a pair of electrodes provided on the opposite sides of the semiconductor element, and a cylindrical member provided to surround the semiconductor element and to be in engagement with the pair of electrodes, each of the electrodes having a thread portion on its outer periphery, and the cylindrical member having a thread portion on its inner peripheral surface screwed onto each of the thread portions of the electrodes, thereby to provide a hermetic seal for the semiconductor element.
Claim 3
Dependent Claim
14 words
A device according to claim 1, wherein the cylindrical member is an insulating member.
Claim 4
Dependent Claim
28 words
A device according to claim 2, wherein the cylindrical member is formed of a plastic material having an elongation rate within the range of 2 to 10 percent.
Claim 5
Dependent Claim
23 words
A device according to claim 1, wherein the thread portions of the cylindrical member are formed at both ends of the cylindrical member.
Claim 6
Dependent Claim
44 words
A device according to claim 1, wherein the thread portion of one of the electrodes has at least two pits for engagement with pins or protrusions of a tool used for screwing said one of the electrodes and the cylindrical member with each other.
Claim 7
Dependent Claim
39 words
A device according to claim 1, further comprising a resilient annular member surrounding the semiconductor element, wherein each of the electrodes has a flange portion and the resilient annular member is compressed between the flange portions of the electrodes.
Claim 8
Dependent Claim
25 words
A device according to claim 6, wherein the thread portion on each of the electrodes are provided on the outer periphery of the flange portion.
Claim 9
Dependent Claim
16 words
A device according to claim 6, wherein the resilient annular member is formed of silicone rubber.
Claim 10
Dependent Claim
73 words
An electronic device comprising: a semiconductor element; first and second electrodes on opposite sides of said semiconnector element; and a cylindrical body which substantially surrounds said semiconductor element and is in a hermetically sealed engagement with said first and said second electrodes; wherein at least one of said electrodes comprises a threaded portion, said threaded portion of said electrode mating with a threaded portion of said cylindrical body to effect a hermetic seal.
Claim 11
Dependent Claim
73 words
An electronic device comprising: a semiconductor element; first and second electrodes on opposite sides of said semiconnector element; and a cylindrical body which substantially surrounds said semiconductor element and is in a hermetically sealed engagement with said first and said second electrodes; wherein at least one of said electrodes comprises a threaded portion, said threaded portion of said electrode mating with a threaded portion of said cylindrical body to effect a hermetic seal.
Claim 12
Dependent Claim
24 words
The device of claim 9, wherein said body is formed of a polymer material having an elongation within the range of 2 to 10%.
Claim 13
Dependent Claim
21 words
A device according to claim 1, wherein said semiconductor element comprises a silicon wafer having molybdenum disks on two surfaces thereof.
Claim 14
Dependent Claim
21 words
A device according to claim 1, wherein said first and second electrodes are provided on opposite surfaces of said semiconductor element.
Claim 15
Dependent Claim
18 words
A device according to claim 1, wherein said semiconductor element is placed between said first and second electrodes.
Claim 16
Dependent Claim
18 words
A device according to claim 1, wherein exposed surfaces of said semiconductor element are not covered with gold.
Claim 17
Dependent Claim
21 words
A device according to claim 6, wherein said semiconductor element comprises a silicon wafer having molybdenum disks on two surfaces thereof.
Claim 18
Dependent Claim
21 words
A device according to claim 6, wherein said first and second electrodes are provided on opposite surfaces of said semiconductor element.
Claim 19
Dependent Claim
18 words
A device according to claim 6, wherein said semiconductor element is placed between said first and second electrodes.
Claim 20
Dependent Claim
21 words
A device according to claim 9, wherein said semiconductor element comprises a silicon wafer having molybdenum disks on two surfaces thereof.
Claim 21
Dependent Claim
95 words
An electronic device comprising: a semiconductor element; a cathode electrode and an anode electrode connected to opposite surfaces of said semiconductor element, said semiconductor element being placed between said anode and cathode electrodes; a substantially cylindrical body, which includes at least one threaded portion on an inner surface thereof, and which substantially surrounds said semiconductor element; and a resilient annular member, which surrounds said semiconductor element within said cylindrical body; wherein each of said electrodes comprises a threaded portion, which mates with said threaded portion of said cylindrical body to effect a hermetic seal therebetween.
Claim 22
Dependent Claim
95 words
An electronic device comprising: a semiconductor element; a cathode electrode and an anode electrode connected to opposite surfaces of said semiconductor element, said semiconductor element being placed between said anode and cathode electrodes; a substantially cylindrical body, which includes at least one threaded portion on an inner surface thereof, and which substantially surrounds said semiconductor element; and a resilient annular member, which surrounds said semiconductor element within said cylindrical body; wherein each of said electrodes comprises a threaded portion, which mates with said threaded portion of said cylindrical body to effect a hermetic seal therebetween.
Claim 23
Dependent Claim
21 words
A device according to claim 19, wherein said resilient annular member is in contact with the periphery of said semiconductor element.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-08 | 1992-11-07 | 1993-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-08 | 1996-11-07 | 1997-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-08 | 2000-11-07 | 2001-05-09 | $7700.00 | Window Closed / Lapsed |