Patent US3530974A successfully refreshed from Google Patents.
Patent US4933561A successfully refreshed from Google Patents.
US4933561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monolithic optocoupler with electrically conducting layer for diverting interference
Assignee: ABB AB
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Filing: 1988-12-02
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Granted: 1990-06-12
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Expires: 2008-12-02
Abstract
Abstract A monolithic optocoupler has a semi-insulating substrate and two opto-components (A, B) arranged thereon, between which signals and/or power can be transmitted through optical radiation. In order to suppress interference transferred capacitively and/or resistively between the two components, screening means are arranged on the substrate between the two components. The screening member is produced using the same type of integrated-circuit technique as for the opto-components, and preferably in the same manufacturing step as these components. The screening member is suitably provided with connection means for its grounding.
Inventors
- 👤 Sture Goransson
- 👤 Tomas Hidman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:32
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/80; H04B10/801; H04B10/802; G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4246; G02B6/4295; H10; H10F; H10F55/00; H10F55/18; H10F55/20; H10F55/25; H10F55/255
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
94 words
A monolithic optocoupler comprising: an insulating substrate; two opto-components produced in an integrated form on said insulating substrate and spaced apart from each other, at least one of said components being arranged to emit optical radiation towards the other, and at least one of said components being arranged to receive radiation emitted by the other; and an electrically conducting layer for diverting electrical interference signals, said layer being produced in an integrated form on the surface of said insulating substrate between the two components and provided with connection means for grounding of said layer.
Claim 2
Dependent Claim
94 words
A monolithic optocoupler comprising: an insulating substrate; two opto-components produced in an integrated form on said insulating substrate and spaced apart from each other, at least one of said components being arranged to emit optical radiation towards the other, and at least one of said components being arranged to receive radiation emitted by the other; and an electrically conducting layer for diverting electrical interference signals, said layer being produced in an integrated form on the surface of said insulating substrate between the two components and provided with connection means for grounding of said layer.
Claim 3
Dependent Claim
28 words
A monolithic optocoupler as claimed in claim 1, wherein said electrically conducting layer is produced on at least one wall of a groove extending through said insulating substrate.
Claim 4
Dependent Claim
41 words
A monolithic optocoupler as claimed in claim 2, wherein said insulating substrate is arranged to conduct optical radiation between said opto-components, and wherein said electrically conducting layer is so constructed as to be at least partially permeable to the optical radiation.
Claim 5
Dependent Claim
17 words
A monolithic optocoupler as claimed in claim 1, wherein said electrically conducting layer is made of metal.
Claim 6
Dependent Claim
25 words
A monolithic optocoupler as claimed in claim 1, wherein said electrically conducting layer consists of the same material as the material of the two opto-components.
Claim 7
Dependent Claim
49 words
A monolithic optocoupler as claimed in claim 1, comprising at least two layers of semi-conducting material arranged between an opto-component and said substrate, said layers being of opposite conductivity types and so arranged that when the optocoupler is in operation, a reverse biased pn-junction is formed between the layers.
Claim 8
Dependent Claim
28 words
A monolithic optocoupler as claimed in claim 6, wherein three layers of alternately opposite conducting types are arranged between the active junction of said opto-component and said substrate.
Claim 9
Dependent Claim
30 words
A monolithic optocoupler as claimed in claim 7, wherein one of said three layers, which is arranged nearest said substrate, is provided with connection means for grounding of said layer.
Claim 10
Dependent Claim
16 words
A monolithic optocoupler as claimed in claim 2, wherein said conducting layer is made of metal.
Claim 11
Dependent Claim
16 words
A monolithic optocoupler as claimed in claim 3, wherein said conducting layer is made of metal.
Claim 12
Dependent Claim
48 words
A monolithic optocoupler as claimed in claim 2, comprising two layers of semi-conducting material arranged between an opto-component and the substrate, said layers being of opposite conductivity types an d so arranged that when the optocoupler is in operation, a reverse biased pn-junction is formed between the layers.
Claim 13
Dependent Claim
47 words
A monolithic optocoupler as claimed in claim 3, comprising two layers of semi-conducting material arranged between an opto-component and the substrate, said layers being of opposite conductivity types and so arranged that when the optocoupler is in operation, a reverse biased pn-junction is formed between the layers.
Claim 14
Dependent Claim
47 words
A monolithic optocoupler as claimed in claim 4, comprising two layers of semi-conducting material arranged between an opto-component and the substrate, said layers being of opposite conductivity types and so arranged that when the optocoupler is in operation, a reverse biased pn-junction is formed between the layers.
Claim 15
Dependent Claim
47 words
A monolithic optocoupler as claimed in claim 5, comprising two layers of semi-conducting material arranged between an opto-component and the substrate, said layers being of opposite conductivity types and so arranged that when the optocoupler is in operation, a reverse biased pn-junction is formed between the layers.
Claim 16
Independent Claim
111 words
A method of producing a monolithic optocoupler, comprising the steps of: providing an insulating substrate; producing two integrated opto-components on said substrate, spaced apart from each other, at least one of said components being arranged to emit optical radiation towards the other, and at least one of said components being arranged to receive radiation emitted by the other; and producing, in an integrated form, an electrically conducting layer for diverting electrical interference signals on the surface of said insulating substrate between the two components simultaneously with producing said opto-components, by the same integrated technique and from the same material as said opto-components; and providing connection means for grounding of said layer.
Claim 17
Independent Claim
111 words
A method of producing a monolithic optocoupler, comprising the steps of: providing an insulating substrate; producing two integrated opto-components on said substrate, spaced apart from each other, at least one of said components being arranged to emit optical radiation towards the other, and at least one of said components being arranged to receive radiation emitted by the other; and producing, in an integrated form, an electrically conducting layer for diverting electrical interference signals on the surface of said insulating substrate between the two components simultaneously with producing said opto-components, by the same integrated technique and from the same material as said opto-components; and providing connection means for grounding of said layer.
Claim 18
Dependent Claim
63 words
A monolithic optocoupler as claimed in claim 15, wherein said electrically conducting layer comprises a layer of semiconducting material on the surface of said substrate, said material being of the same type as the material of the two opto-components, and on the top of said layer of semiconducting material a metal layer is provided with connection means for grounding of said metal layer.
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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) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |