US5986324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterojunction bipolar transistor
Assignee: Semiconductor Components Industries LLC
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Filing: 1997-04-11
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Granted: 1999-11-16
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Expires: 2017-04-11
Abstract
Abstract A bipolar transistor having a pair of transistor cells formed on a single crystal substrate. Each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode disposed over a first surface of the substrate. The base electrode is adapted to control a flow of carriers between the collector and emitter electrodes. An emitter pad is disposed over the first surface of the substrate. A pair of conductive, air-bridge members is provided. First ends of the bridge members are connected to the emitter pad and second ends of the bridge members are connected along a length of the elongated emitter electrode. The substrate has an emitter contact disposed on a second surface of the substrate. The emitter pad and the emitter contact are electrically connected by an electrically conductive via passing through the substrate between the first and second surfaces of the substrate. The emitter pad comprises a resistive layer disposed serially between the pair of bridges and the emitter contact. The emitter pad includes: a resistive layer disposed over the first surface of the substrate and having an inner portion in electrical contact with the electrically conductive via; a dielectric layer disposed over an inner region of the resistive layer; and a pair of electrical contacts, an outer portion of each of the electrical contacts being disposed in electrical contact with outer portions of the resistive layer and inner portions of the pair of electrical contacts being electrically insulated from the resistive layer.
Inventors
- 👤 Michael G. Adlerstein
- 👤 Mark P. Zaitlin
- 👤 Kamal Tabatabaie-Alavi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:28
CPC Classifications
H; H10; H10D; H10D10/00; H10D10/80; H10D10/821; H10D84/00; H10D84/01; H10D84/02; H10D84/05
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
116 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode, the electrodes being disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected along a length of a corresponding one of the elongated emitter electrodes.
Claim 2
Dependent Claim
116 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode, the electrodes being disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected along a length of a corresponding one of the elongated emitter electrodes.
Claim 3
Dependent Claim
55 words
The transistor recited in claim 1 wherein the substrate has an emitter contact disposed on a second surface of the substrate, and wherein the emitter pad and the emitter contact are electrically connected by an electrically conductive via passing through the substrate between the first and second surfaces of the substrate between the emitter electrodes.
Claim 4
Dependent Claim
39 words
The transistor recited in claim 1 wherein each transistor cell includes exactly one conductive member and wherein the elongated emitter electrode of each transistor cell is disposed between the emitter pad and the collector electrode of that transistor cell.
Claim 5
Dependent Claim
182 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode, the electrodes being disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected along a length of a corresponding one of the elongated emitter electrodes; and an emitter contact disposed on a second surface of the substrate between the emitter electrodes; wherein the emitter pad and the emitter contact are electrically connected by an electrically conductive via passing through the substrate between the first and second surfaces of the substrate; and wherein the emitter pad comprises a resistive layer disposed serially between the pair of conductive members and the emitter contact.
Claim 6
Dependent Claim
182 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode, the electrodes being disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected along a length of a corresponding one of the elongated emitter electrodes; and an emitter contact disposed on a second surface of the substrate between the emitter electrodes; wherein the emitter pad and the emitter contact are electrically connected by an electrically conductive via passing through the substrate between the first and second surfaces of the substrate; and wherein the emitter pad comprises a resistive layer disposed serially between the pair of conductive members and the emitter contact.
Claim 7
Dependent Claim
255 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode, the electrodes being disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate between the pair of transistor cells; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected along a length of a corresponding one of the elongated emitter electrodes; wherein the substrate has an emitter contact disposed on a second surface of the substrate, and wherein the emitter pad and the emitter contact are electrically connected by an electrically conductive via passing through the substrate between the first and second surfaces of the substrate; and wherein the emitter pad comprises: (a) a resistive layer disposed over the first surface of the substrate and having an inner portion in electrical contact with the electrically conductive via; (b) a dielectric layer disposed over an inner region of the resistive layer; and (c) a pair of electrical contacts, an outer portion of each of the electrical contacts being disposed in electrical contact with outer portions of the resistive layer and inner portions of the pair of electrical contacts being electrically insulated from the resistive layer.
Claim 8
Dependent Claim
255 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode, the electrodes being disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate between the pair of transistor cells; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected along a length of a corresponding one of the elongated emitter electrodes; wherein the substrate has an emitter contact disposed on a second surface of the substrate, and wherein the emitter pad and the emitter contact are electrically connected by an electrically conductive via passing through the substrate between the first and second surfaces of the substrate; and wherein the emitter pad comprises: (a) a resistive layer disposed over the first surface of the substrate and having an inner portion in electrical contact with the electrically conductive via; (b) a dielectric layer disposed over an inner region of the resistive layer; and (c) a pair of electrical contacts, an outer portion of each of the electrical contacts being disposed in electrical contact with outer portions of the resistive layer and inner portions of the pair of electrical contacts being electrically insulated from the resistive layer.
Claim 9
Dependent Claim
189 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode, the electrodes being disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected along a length of a corresponding one of the elongated emitter electrodes; and an emitter contact disposed on a second surface of the substrate between the emitter electrodes; wherein the emitter pad and the emitter contact are electrically connected by an electrically conductive via passing through the substrate between the first and second surfaces of the substrate; and wherein the emitter pad comprises a resistive layer and wherein the conductive members are electrically connected to the electrically conductive via through portions of the resistive layer.
Claim 10
Dependent Claim
189 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode, the electrodes being disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected along a length of a corresponding one of the elongated emitter electrodes; and an emitter contact disposed on a second surface of the substrate between the emitter electrodes; wherein the emitter pad and the emitter contact are electrically connected by an electrically conductive via passing through the substrate between the first and second surfaces of the substrate; and wherein the emitter pad comprises a resistive layer and wherein the conductive members are electrically connected to the electrically conductive via through portions of the resistive layer.
Claim 11
Dependent Claim
116 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate between the pair of transistor cells; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected to a corresponding one of the elongated emitter electrodes.
Claim 12
Dependent Claim
116 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate between the pair of transistor cells; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected to a corresponding one of the elongated emitter electrodes.
Claim 13
Dependent Claim
55 words
The transistor recited in claim 7 wherein the substrate has an emitter contact disposed on a second surface of the substrate, and wherein the emitter pad and the emitter contact are electrically connected by an electrically conductive via passing through the substrate between the first and second surfaces of the substrate between the emitter electrodes.
Claim 14
Dependent Claim
176 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate between the pair of transistor cells; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected to a corresponding one of the elongated emitter electrodes; and an emitter contact disposed on a second surface of the substrate; wherein the emitter pad and the emitter contact are electrically connected by an electrically conductive via sassing through the substrate between the first and second surfaces of the substrate; and wherein the emitter pad comprises a resistive layer disposed serially between the conductive members and the emitter contact.
Claim 15
Dependent Claim
176 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate between the pair of transistor cells; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected to a corresponding one of the elongated emitter electrodes; and an emitter contact disposed on a second surface of the substrate; wherein the emitter pad and the emitter contact are electrically connected by an electrically conductive via sassing through the substrate between the first and second surfaces of the substrate; and wherein the emitter pad comprises a resistive layer disposed serially between the conductive members and the emitter contact.
Claim 16
Dependent Claim
255 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate between the pair of transistor cells; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected to a corresponding one of the elongated emitter electrodes; wherein the substrate has an emitter contact disposed on a second surface of the substrate, and wherein the emitter pad and the emitter contact are electrically connected by an electrically conductive via passing through the substrate between the first and second surfaces of the substrate; wherein the emitter pad comprises a resistive layer disposed serially between the conductive members and the emitter contact; and wherein the emitter pad comprises: a resistive layer having an inner region disposed in electrical contact with the electrically conductive via; a dielectric layer disposed over an inner region of the resistive layer; a pair of electrical contacts, an outer portion of each of the electrical contacts being disposed in electrical contact with outer portions of the resistive layer and inner portions of the pair of electrical contacts being electrically insulated from the resistive layer.
Claim 17
Dependent Claim
255 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; an emitter pad disposed over the first surface of the substrate between the pair of transistor cells; a pair of conductive members, first ends of the conductive members being connected to the emitter pad and second ends of the conductive members being connected to a corresponding one of the elongated emitter electrodes; wherein the substrate has an emitter contact disposed on a second surface of the substrate, and wherein the emitter pad and the emitter contact are electrically connected by an electrically conductive via passing through the substrate between the first and second surfaces of the substrate; wherein the emitter pad comprises a resistive layer disposed serially between the conductive members and the emitter contact; and wherein the emitter pad comprises: a resistive layer having an inner region disposed in electrical contact with the electrically conductive via; a dielectric layer disposed over an inner region of the resistive layer; a pair of electrical contacts, an outer portion of each of the electrical contacts being disposed in electrical contact with outer portions of the resistive layer and inner portions of the pair of electrical contacts being electrically insulated from the resistive layer.
Claim 18
Dependent Claim
141 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; a pair of electrical contacts disposed over the first surface of the substrate between the pair of transistor cells; a pair of bridge members, first ends of the bridge members being connected to a corresponding one of the electrical contacts and second ends of the bridge members being connected along a length of a corresponding one of the elongated emitter electrodes, each one of such bridge members being disposed over a corresponding one of the base electrodes.
Claim 19
Dependent Claim
141 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; a pair of electrical contacts disposed over the first surface of the substrate between the pair of transistor cells; a pair of bridge members, first ends of the bridge members being connected to a corresponding one of the electrical contacts and second ends of the bridge members being connected along a length of a corresponding one of the elongated emitter electrodes, each one of such bridge members being disposed over a corresponding one of the base electrodes.
Claim 20
Dependent Claim
46 words
The transistor recited in claim 11 including: a conductive via passing through the substrate between the emitter electrodes; an emitter contact disposed on a second, opposite surface of the substrate; wherein the via electrically connects the emitter contact to the first ends of the bridge members.
Claim 21
Dependent Claim
239 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; a pair of electrical contacts disposed over the first surface of the substrate between the pair of transistor cells; a pair of bridge members, first ends of the bridge members being connected to a corresponding one of the electrical contacts and second ends of the bridge members being connected along a length of a corresponding one of the elongated emitter electrodes, each one of such bridge members being disposed over a corresponding one of the base electrodes; a conductive via passing through the substrate; an emitter contact disposed on a second, opposite surface of the substrate; wherein the via electrically connects the emitter contact to the bridge members; a resistive layer having an inner region disposed in electrical contact with the electrically conductive via; a dielectric layer disposed over an inner region of the resistive layer; and wherein an outer portion of each of the electrical contacts is disposed in electrical contact with outer portions of the resistive layer and inner portions of the pair of electrical contacts are electrically insulated from the resistive layer.
Claim 22
Dependent Claim
239 words
A bipolar transistor comprising: a single crystal substrate; a pair of transistor cells formed on the substrate, each one of the cells including a collector electrode, an elongated emitter electrode and a base electrode disposed over spaced apart regions, respectively, of a first surface of the substrate, the base electrode being adapted to control a flow of carriers between the collector and emitter electrodes; a pair of electrical contacts disposed over the first surface of the substrate between the pair of transistor cells; a pair of bridge members, first ends of the bridge members being connected to a corresponding one of the electrical contacts and second ends of the bridge members being connected along a length of a corresponding one of the elongated emitter electrodes, each one of such bridge members being disposed over a corresponding one of the base electrodes; a conductive via passing through the substrate; an emitter contact disposed on a second, opposite surface of the substrate; wherein the via electrically connects the emitter contact to the bridge members; a resistive layer having an inner region disposed in electrical contact with the electrically conductive via; a dielectric layer disposed over an inner region of the resistive layer; and wherein an outer portion of each of the electrical contacts is disposed in electrical contact with outer portions of the resistive layer and inner portions of the pair of electrical contacts are electrically insulated from the resistive layer.
References Cited (Backward Citations)
US5793067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-15 | 2003-05-17 | 2003-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-15 | 2007-05-17 | 2007-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-15 | 2011-05-17 | 2011-11-16 | $7700.00 | Window Closed / Lapsed |