US3918080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiemitter transistor with continuous ballast resistor
Assignee: US Philips Corp
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Filing: 1973-07-12
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Granted: 1975-11-04
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Expires: 1993-07-12
Abstract
Abstract A multi-emitter planar transistor comprises a continuous resistance region coplanar with or located near the surface of emitter regions, finger contacts connecting the emitter regions with spaced portions of the resistance region and an elongated common emitter contact located on another portion of the resistance region and having a long edge opposite the finger contacts.
Inventors
- 👤 George Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:39
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/10; H10D62/13; H10D62/133; H10D84/00; H10D84/101; H10D84/121; H10D84/125; H10D84/60; H10D84/611; H10D84/613; H10D84/615; H10W; H10W20/00; H10W20/40; H10W20/482; H10W20/484
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
162 words
A SEMICONDUCTOR DEVICE COMPRISING A SEMICONDUCTOR BODY HAVING A SUBSTANTIALLY PLANE SURFACE, SAID BODY COMPRISING PLURAL REGIONS ADJACENT THE SURFACE OF AT LEAST ONE CIRCUIT ELEMENT, AN INSULATING LAYER ON THE BODY SURFACE, A COMMON CONTACT ON SAID INSULATING LAYER AND LATERALLY SPACED FROM SAID REGIONS, A PLURALITY OF SPACED FINGER CONNECTIONS ON THE INSULATING LAYER, SAID FINGERS MAKING CONTACT WITH SAID REGIONS THROUGH HOLES IN THE INSULATING LAYER, AND MEANS FORMING A RESISTOR IN SERIES BETWEEN THE COMMON CONTACT AND EACH OF THE FINGER CONNECTIONS, SAID RESISTOR FORMING MEANS COMPRISING A CONTINUOUS RESISTANCE LAYER SEPARATED FROM SAID REGIONS AND LATERALLY SPACED FROM SAID HOLES IN THE INSULATING LAYER, SAID COMMOM CONTACT BEING CONNECTED TO ONE PORTION OF THE RESISTANCE LAYER, SAID FINGER CONNECTIONS BEING CONNECTED TO OTHER PORTIONS SPACED FROM SAID ONE PORTION OF THE RESISTANCE LAYER, SAID RESISTANCE LAYER FURTHUR COMPRISING A FIRST SEMICONDUCTOR SURFACE REGION IN THE BODY COMPLETELY SURROUNDED BY A SECOND SEMICONDUCTOR REGION, THE SECOND SEMICONDUCTOR REGION
Claim 2
Dependent Claim
162 words
A SEMICONDUCTOR DEVICE COMPRISING A SEMICONDUCTOR BODY HAVING A SUBSTANTIALLY PLANE SURFACE, SAID BODY COMPRISING PLURAL REGIONS ADJACENT THE SURFACE OF AT LEAST ONE CIRCUIT ELEMENT, AN INSULATING LAYER ON THE BODY SURFACE, A COMMON CONTACT ON SAID INSULATING LAYER AND LATERALLY SPACED FROM SAID REGIONS, A PLURALITY OF SPACED FINGER CONNECTIONS ON THE INSULATING LAYER, SAID FINGERS MAKING CONTACT WITH SAID REGIONS THROUGH HOLES IN THE INSULATING LAYER, AND MEANS FORMING A RESISTOR IN SERIES BETWEEN THE COMMON CONTACT AND EACH OF THE FINGER CONNECTIONS, SAID RESISTOR FORMING MEANS COMPRISING A CONTINUOUS RESISTANCE LAYER SEPARATED FROM SAID REGIONS AND LATERALLY SPACED FROM SAID HOLES IN THE INSULATING LAYER, SAID COMMOM CONTACT BEING CONNECTED TO ONE PORTION OF THE RESISTANCE LAYER, SAID FINGER CONNECTIONS BEING CONNECTED TO OTHER PORTIONS SPACED FROM SAID ONE PORTION OF THE RESISTANCE LAYER, SAID RESISTANCE LAYER FURTHUR COMPRISING A FIRST SEMICONDUCTOR SURFACE REGION IN THE BODY COMPLETELY SURROUNDED BY A SECOND SEMICONDUCTOR REGION, THE SECOND SEMICONDUCTOR REGION
Claim 3
Dependent Claim
54 words
A semiconductor device as set forth in claim 1 wherein the first surface region is subdivided into plural spaced subregions each inset in the second region and each forming its own p-n junction with the second region, said short-circuiting means short-circuiting each of the p-n junctions formed between each subregion and the second region.
Claim 4
Dependent Claim
38 words
A semiconductor device as set forth in claim 2 wherein the common contact makes contact through a hole in the insulating layer with the second region and the subregions across their p-n junctions to constitute the short-circuiting means.
Claim 5
Dependent Claim
155 words
A semiconductor device comprising a semiconductor body having a substantially plane surface, said body comprising plural emitter regions each having a surface coplanar with said plane surface, an insulating layer on the plane surface, a plurality of spaced finger connections on the insulating layer, each finger connection making contact with an emitter region through a hole in the insulating layer, and a continuous resistance layer disposed on the insulating layer and having a long edge facing the holes in the insulating layer, and being spaced therefrom, an elongated common emitter contact connected to an elongated upper surface portion of the resistance layer spaced apart from said edge, said finger connections being each connected to other upper surface portions of the resistance layer near said edge and being spaced apart from each other and from said elongated portion at such distances that the resistance between each finger connection and the common emitter contact is substantially alike.
Claim 6
Dependent Claim
155 words
A semiconductor device comprising a semiconductor body having a substantially plane surface, said body comprising plural emitter regions each having a surface coplanar with said plane surface, an insulating layer on the plane surface, a plurality of spaced finger connections on the insulating layer, each finger connection making contact with an emitter region through a hole in the insulating layer, and a continuous resistance layer disposed on the insulating layer and having a long edge facing the holes in the insulating layer, and being spaced therefrom, an elongated common emitter contact connected to an elongated upper surface portion of the resistance layer spaced apart from said edge, said finger connections being each connected to other upper surface portions of the resistance layer near said edge and being spaced apart from each other and from said elongated portion at such distances that the resistance between each finger connection and the common emitter contact is substantially alike.
Claim 7
Dependent Claim
66 words
A semiconductor device as set forth in claim 4 wherein the resistance layer has a construction such that the resistance thereof between two adjacent finger connections is at least equal to that between each of said two finger connections and the said common contact, and the resistance layer extends beyond all of the finger connections a distance at least equal to one-half the finger connection spacing.
Claim 8
Dependent Claim
55 words
A semiconductor device as set forth in claim 4 wherein the resistance layer has two opposed long edges, said finger connections being connected to spaced portions of the resistance layer along at least one of the long edges, and the common contact being connected to an elongated portion of the resistance layer between said edges.
Claim 9
Dependent Claim
71 words
A semiconductor device as set forth in claim 6 wherein a connecting lead is attached to the common contact, the resistance layer is a substantially homogeneous layer, and the shortest distance in the resistance layer between the common contact and a finger located close to the point of attachment of the connecting lead is longer than the corresponding distance for a finger connection more remote from the said point of attachment.
Claim 10
Dependent Claim
29 words
A semiconductor device as claimed in claim 4, wherein the resistance between each finger connection and the common emitter contact is less than the resistance between the finger connections.
Claim 11
Dependent Claim
141 words
A semiconductor device comprising a semiconductor body having a substantially plane surface, said body comprising plural regions of the same type of conductivity adjacent the surface of at least one circuit element, an insulating layer on the body surface, a plurality of spaced finger connections on the insulating layer, said finger connections making contact with at least one of said regions through holes in the insulating layer, a continuous resistance layer separated from said plural regions, an elongated common contact connected to one upper surface portion of the resistance layer, said finger connections being connected to other upper surface portions spaced from said one portion of the resistance layer, the resistance layer comprising a semiconductor region in the body having a surface coplanar with said plane surface and separated from the adjacent part of the semiconductor body by a p-n junction.
Claim 12
Dependent Claim
141 words
A semiconductor device comprising a semiconductor body having a substantially plane surface, said body comprising plural regions of the same type of conductivity adjacent the surface of at least one circuit element, an insulating layer on the body surface, a plurality of spaced finger connections on the insulating layer, said finger connections making contact with at least one of said regions through holes in the insulating layer, a continuous resistance layer separated from said plural regions, an elongated common contact connected to one upper surface portion of the resistance layer, said finger connections being connected to other upper surface portions spaced from said one portion of the resistance layer, the resistance layer comprising a semiconductor region in the body having a surface coplanar with said plane surface and separated from the adjacent part of the semiconductor body by a p-n junction.
Claim 13
Dependent Claim
69 words
A semiconductor device as claimed in claim 9 wherein a connectiNg lead is attached to the common contact, the resistance layer is a substantially homogeneous layer, and the shortest distance in the resistance layer between the common contact and a finger located close to the point of attachment of the connecting lead is longer than the corresponding distance for a finger more remote from the said point of attachment.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |