Patent US1833557A successfully refreshed from Google Patents.
Patent US5010390A successfully refreshed from Google Patents.
US5010390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic-molded semiconductor device
Assignee: Toshiba Corp
•
Filing: 1987-09-03
•
Granted: 1991-04-23
•
Expires: 2007-09-03
Abstract
Abstract A plastic-molded semiconductor device comprises a semiconductor pellet having an insulating substrate and an integrated circuit formed on the insulating substrate, and a pellet mounting member on which the semiconductor pellet is mounted. The pellet mounting member is not provided with any conductive portion at least under the center of the insulating substrate. The distance between the interconnection layer of the integrated circuit and the conductive portion of the pellet mounting member is relatively long, so the semiconductor device has a small parasitic capacitance. This results in a high speed and a low power dissipation.
Inventors
- 👤 Shigeru Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:27
CPC Classifications
H; H10; H10W; H10W20/00; H10W20/40; H10W20/495; Y; Y10; Y10S; Y10S257/00; Y10S257/916
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A device comprising: a semiconductor pellet having an insulating substrate with a periphery along an outer edge of said insulating substrate, an integrated circuit formed on said insulating substrate, and a pellet mounting member on which said semiconductor pellet is mounted, said pellet mounting member having a lead frame with a conductive support means for supporting said insulating substrate in a manner to produce a reduced parasitic capacitance by contacting said insulating substrate only at the periphery of said insulating substrate, wherein said device is a plastic-molded semiconductor device, wherein said lead frame has an inner lead, wherein said conductive support means is in form of a substantially rectangular ring of substantially the same size as said semiconductor pellet, and said substantially rectangular ring is connected to an end of said inner lead of said lead frame.
Claim 2
Independent Claim
137 words
A device comprising: a semiconductor pellet having an insulating substrate with a periphery along an outer edge of said insulating substrate, an integrated circuit formed on said insulating substrate, and a pellet mounting member on which said semiconductor pellet is mounted, said pellet mounting member having a lead frame with a conductive support means for supporting said insulating substrate in a manner to produce a reduced parasitic capacitance by contacting said insulating substrate only at the periphery of said insulating substrate, wherein said device is a plastic-molded semiconductor device, wherein said lead frame has an inner lead, wherein said conductive support means is in form of a substantially rectangular ring of substantially the same size as said semiconductor pellet, and said substantially rectangular ring is connected to an end of said inner lead of said lead frame.
References Cited (Backward Citations)
US3878555A
Cited
US3864820A
Cited
JPS5225572A
Cited
US4142203A
Cited
US4301464A
Cited
JPS5553450A
Cited
GB2090055A
Cited
JPS5814557A
Cited
JPS5852863A
Cited
JPS5895844A
Cited
JPS58194357A
Cited
JPS58162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-22 | 1994-10-22 | 1995-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-22 | 1998-10-22 | 1999-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-22 | 2002-10-22 | 2003-04-23 | $7700.00 | Window Closed / Lapsed |