Patent US3847758A successfully refreshed from Google Patents.
US3847758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing an electrode system
Assignee: US Philips Corp
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Filing: 1973-02-12
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Granted: 1974-11-12
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Expires: 1993-02-12
Abstract
Abstract The invention relates to a method of manufacturing an electrode system having a monograin layer. On free grain surfaces of the monograin layer a first electrode layer is deposited. After a material-removing treatment, a deposition step is applied in which parts of enveloping layers of the grains and edges of cores of the grains adjoining pn-junctions are selectively covered with an insulating material and a second eletrode layer is deposited on parts of the cores of the grains not covered.
Inventors
- 👤 Velde T Te
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:40
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/10; H10F77/16; H10F77/162; H10H; H10H20/00; H10H20/80; Y; Y10; Y10S; Y10S148/00; Y10S148/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
191 words
A METHOD OF MANUFACTURING AN ELECTRODE SYSTEM HAVING A MONOGRAIN LAYER, IN WHICH GRAINS OF A SEMICONDUCTOR MATERIAL WITH ENVELOPING LAYERS AND CORES OF OPPOSITE CONDUCTIVITY TYPES ARE EMBEDDED IN A LAYER OF BINDER IN A SUBSTANTIALLY MONOGRAIN LAYER OVER A PART OF THE LAYER THICKNESS, A FIRST ELECTRODE LAYER FOR CONTACTING THE ENVELOPING LAYERS OF THE GRAINS IS DEPOSITED ON ONE SIDE OF THE MONOGRAIN LAYER WITH FREE GRAINS SURFACES, A MATERIAL-REMOVING TREATMENT IS USED IN WHICH PARTS OF THE CORES OF THE GRAINS AND PARTS OF THE ENVELOPING LAYERS OF THE GRAINS ARE EXPOSED AFTER WHICH IN A SUCCEEDING PROCESS STEP INSULATING MATERIAL IS PROVIDED ON THE EXPOSED PARTS AND A SECOND ELECTRODE LAYER FOR CONTACTING THE CORES OF THE GRAINS IS DEPOSITED CHARACTERIZED IN THAT IN SAID PROCESS STEP THE INSULATING MATERIAL IS SELECTIVELY PROVIDED ON THE EXPOSED PARTS OF THE ENVELOPING LAYERS OF THE GRAINS AND ON EDGES OF THE EXPOSED PARTS OF THE CORES OF THE GRAINS ADJOINING THE JUNCTIONS AND PARTS OF THE CORES OF THE GRAINS NOT COVERED DURING THE PROVISION OF THE INSULATING MATERIAL ARE THEN CONTACTED BY DEPOSITING THE SECOND ELECTRODE LAYER.
Claim 2
Independent Claim
191 words
A METHOD OF MANUFACTURING AN ELECTRODE SYSTEM HAVING A MONOGRAIN LAYER, IN WHICH GRAINS OF A SEMICONDUCTOR MATERIAL WITH ENVELOPING LAYERS AND CORES OF OPPOSITE CONDUCTIVITY TYPES ARE EMBEDDED IN A LAYER OF BINDER IN A SUBSTANTIALLY MONOGRAIN LAYER OVER A PART OF THE LAYER THICKNESS, A FIRST ELECTRODE LAYER FOR CONTACTING THE ENVELOPING LAYERS OF THE GRAINS IS DEPOSITED ON ONE SIDE OF THE MONOGRAIN LAYER WITH FREE GRAINS SURFACES, A MATERIAL-REMOVING TREATMENT IS USED IN WHICH PARTS OF THE CORES OF THE GRAINS AND PARTS OF THE ENVELOPING LAYERS OF THE GRAINS ARE EXPOSED AFTER WHICH IN A SUCCEEDING PROCESS STEP INSULATING MATERIAL IS PROVIDED ON THE EXPOSED PARTS AND A SECOND ELECTRODE LAYER FOR CONTACTING THE CORES OF THE GRAINS IS DEPOSITED CHARACTERIZED IN THAT IN SAID PROCESS STEP THE INSULATING MATERIAL IS SELECTIVELY PROVIDED ON THE EXPOSED PARTS OF THE ENVELOPING LAYERS OF THE GRAINS AND ON EDGES OF THE EXPOSED PARTS OF THE CORES OF THE GRAINS ADJOINING THE JUNCTIONS AND PARTS OF THE CORES OF THE GRAINS NOT COVERED DURING THE PROVISION OF THE INSULATING MATERIAL ARE THEN CONTACTED BY DEPOSITING THE SECOND ELECTRODE LAYER.
Claim 3
Dependent Claim
49 words
A method as claimed in claim 1, characterized in that an insulating layer is provided on the first electrode layer, the material-removing treatment is applied to both last-mentioned layers, parts of the first electrode layer being exposed, said latter parts being covered during the selective provision of insulating material.
Claim 4
Dependent Claim
75 words
A method as claimed in claim 1, characterized in that the insulatIng material is provided by electrophoresis in that the exposed parts are contacted with a bath containing an insulating material suitable for electrophoretic coating and electrophoresis is carried out by giving the first electrode layer a voltage relative to the bath at which the junctions between the cores of the grains and the enveloping layers of the grains are biased in the reverse direction.
Claim 5
Dependent Claim
81 words
A method as claimed in claim 1, characterized in that the insulating material is provided by electrochemical polymerisation in that the exposed parts are contacted with a bath containing a material which is converted into the insulating material by electrochemical polymerisation and polymerisation is carried out by giving the first electrode layer a voltage relative to the bath at which the junctions between the cores of the grains and the enveloping layers of the grains are biased in the reverse direction.
Claim 6
Dependent Claim
65 words
A method as claimed in claim 1, characterized in that the insulating material is provided on the monograin layer prior to the material-removing treatment and after the treatment the insulating material is caused to swell so that the exposed parts of the enveloping layers of the grains and the edges of the exposed parts of the cores of the grains adjoining the junctions are covered.
Claim 7
Dependent Claim
23 words
A method as claimed in claim 1, characterized in that a grinding process or a polishing process is chosen as a material-removing treatment.
Claim 8
Dependent Claim
68 words
A method as claimed in claim 1, characterized in that prior to depositing the first electrode layer the monograin layer is obtained in that the grains are provided as a substantially monograin layer in an adhesive layer on a substantially plane substrate and embedded in the layer of binder, after which the monograin layer is separated from the substrate to obtain the side with the free grain surfaces.
Claim 9
Dependent Claim
35 words
A method as claimed in claim 7, characterized in that the side with the free grain surfaces is then treated with a specific solvent for the binder so as to enlarge the free grain surface.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |