US5023703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device
Assignee: Fujitsu Ltd
•
Filing: 1989-12-12
•
Granted: 1991-06-11
•
Expires: 2009-12-12
Abstract
Abstract A semiconductor device comprising a metal base providing a metal case and a through-passage connecting the inside and outside of said metal case, an electric terminal which provides a bridge selectively deposited on the insulator base allowing formation of conductive layer thereon, said insulator base and said conductive layer and is integrated with said insulator base and is insertingly engaged with the through-passage of said metal base, and a semiconductor element accommodated in said metal case, wherein a pseudo-coaxial line structure is composed of said conductive layer, insulator base, insulator bridge and metal case. Accordingly a device of the present invention is capable of stably operating even at a frequency of 10 GHz or higher.
Inventors
- 👤 Norio Hidaka
- 👤 Shigeyuki Yamamura
- 👤 Masumi Fukuta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:52
CPC Classifications
H; H10; H10W; H10W44/00; H10W44/20; H10W70/00; H10W70/60; H10W70/62; H10W70/65; H10W70/658; H10W44/203; H10W44/209; H10W44/212; H10W70/654; H10W70/655
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
87 words
A package for a semiconductor device, comprising: a solid metal case having a through passage connecting an inside and outside of said case; and an electric terminal in the through passage, said electric terminal comprising: an insulator base having a planar surface; a strip line conductor formed on said insulator base; and an insulator piece abutting part of the planar surface, an upper surface of said conductor being exposed on both sides of said piece and being provided on the inside and outside of said metal case.
Claim 2
Dependent Claim
87 words
A package for a semiconductor device, comprising: a solid metal case having a through passage connecting an inside and outside of said case; and an electric terminal in the through passage, said electric terminal comprising: an insulator base having a planar surface; a strip line conductor formed on said insulator base; and an insulator piece abutting part of the planar surface, an upper surface of said conductor being exposed on both sides of said piece and being provided on the inside and outside of said metal case.
Claim 3
Dependent Claim
22 words
A package as recited in claim 1, further comprising a lead segment secured to said conductor on the outside of said case.
Claim 4
Dependent Claim
16 words
A package as recited in claim 1, wherein said case has a step like exterior surface.
Claim 5
Dependent Claim
15 words
A package as recited in claim 1, further comprising a metal cap abutting said case.
Claim 6
Dependent Claim
18 words
A package as recited in claim 1, wherein said semiconductor device is a GaAs-FET connected to said conductor.
Claim 7
Dependent Claim
15 words
A package as recited in claim 1, wherein said insulator base extends beyond said case.
Claim 8
Dependent Claim
95 words
A package for a semiconductor, comprising: a solid metal case having first and second adjacent through holes connecting an inside and outside of said case; and first and second electric terminals respectively in said first and second through holes, each electric terminal comprising: an insulator base having a planar surface; a strip line conductor formed on said insulator base; and an insulator piece abutting part of the planar surface, an upper surface of said conductor being exposed on both sides of said piece and being provided on the inside and outside of said metal case.
Claim 9
Dependent Claim
95 words
A package for a semiconductor, comprising: a solid metal case having first and second adjacent through holes connecting an inside and outside of said case; and first and second electric terminals respectively in said first and second through holes, each electric terminal comprising: an insulator base having a planar surface; a strip line conductor formed on said insulator base; and an insulator piece abutting part of the planar surface, an upper surface of said conductor being exposed on both sides of said piece and being provided on the inside and outside of said metal case.
Claim 10
Dependent Claim
29 words
A package as recited in claim 7, further comprising: a third through hole adjacent to said second through hole; and a third electric terminal respectively in said third hole.
Claim 11
Dependent Claim
65 words
A package as recited in claim 8, wherein said third electric terminal comprises: an insulator base having a planar surface; a strip line conductor formed on said insulator base; and an insulator piece abutting part of the planar surface, and upper surface of said conductor being exposed on both sides of said piece and being provided on the inside and outside of said metal case.
Claim 12
Dependent Claim
20 words
A package as recited in claim 7, wherein said through holes are located on the same side of said case.
Claim 13
Dependent Claim
86 words
A package for a semiconductor, comprising: a solid metal case having a through slot connecting an inside and outside of said case; and an electric terminal in the through slot, said electric terminal comprising: an insulator base having a planar surface; a strip line conductor formed on said insulator base; and an insulator piece abutting part of the planar surface, an upper surface of said conductor being exposed on both sides of said piece and being provided on the inside and outside of said metal case.
Claim 14
Dependent Claim
86 words
A package for a semiconductor, comprising: a solid metal case having a through slot connecting an inside and outside of said case; and an electric terminal in the through slot, said electric terminal comprising: an insulator base having a planar surface; a strip line conductor formed on said insulator base; and an insulator piece abutting part of the planar surface, an upper surface of said conductor being exposed on both sides of said piece and being provided on the inside and outside of said metal case.
Claim 15
Dependent Claim
15 words
A package as recited in claim 11, further comprising a metal cap abutting said case.
Claim 16
Dependent Claim
96 words
A package for a semiconductor, comprising: a solid metal case abutting a base and having a through cutout connecting an inside and an outside of said case; a metal frame abutting said case; and an electric terminal in the cutout, said electric terminal comprising: an insulator base having a planar surface; a strip line conductor formed on said insulator base; and an insulator piece abutting part of the planar surface, an upper surface of said conductor being exposed on both sides of said piece and being provided on the inside and outside of said metal case.
Claim 17
Dependent Claim
96 words
A package for a semiconductor, comprising: a solid metal case abutting a base and having a through cutout connecting an inside and an outside of said case; a metal frame abutting said case; and an electric terminal in the cutout, said electric terminal comprising: an insulator base having a planar surface; a strip line conductor formed on said insulator base; and an insulator piece abutting part of the planar surface, an upper surface of said conductor being exposed on both sides of said piece and being provided on the inside and outside of said metal case.
Claim 18
Dependent Claim
15 words
A package as recited in claim 13, further comprising a metal cap abutting said frame.
Claim 19
Dependent Claim
71 words
An electric terminal for a through passage of a solid metal package for a semiconductor device, said terminal comprising: an insulator base having a planar surface; a strip line conductor formed on said insulator base; and an insulator piece abutting part of the planar surface, an upper surface of said conductor being exposed on both sides of said piece and being provided on the inside and outside of said metal case.
Claim 20
Dependent Claim
71 words
An electric terminal for a through passage of a solid metal package for a semiconductor device, said terminal comprising: an insulator base having a planar surface; a strip line conductor formed on said insulator base; and an insulator piece abutting part of the planar surface, an upper surface of said conductor being exposed on both sides of said piece and being provided on the inside and outside of said metal case.
Claim 21
Dependent Claim
28 words
A terminal as recited in claim 15, wherein said package has a metal cap and said cap exposes the exposed upper surface of said conductor on the outside.
References Cited (Backward Citations)
JPS51116980A
Cited
JPS5443971A
Cited
US4186994A
Cited
US4266090A
Cited
US4267565A
Cited
US4412093A
Cited
US4455448A
Cited
US4461924A
Cited
US4698661A
Cited
JPS6112680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-10 | 1994-12-10 | 1995-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-10 | 1998-12-10 | 1999-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-10 | 2002-12-10 | 2003-06-11 | $7700.00 | Window Closed / Lapsed |