US3772774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing multiple conductive lead-in members
Assignee: US Philips Corp
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Filing: 1970-07-06
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Granted: 1973-11-20
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Expires: 1990-07-06
Abstract
Abstract A method of manufacturing a multiple lead-in sturcture in which spaced deposits of a solvent for the constituents of the lead-in members are provided on a substrate which is then heated to liquify those deposits and form molten droplets. Thereafter, the substrate is exposed to a vapor atmosphere containing the lead-in member constituents which are dissolved in the molten droplets and epitaxially deposit from the droplets onto the surface of the substrate. The latter step is continued until elongated crystals of the lead-in member constituents grow on the sites of the solvent deposits. Thereafter, an insulating material is provided between the elongated crystals. The substrate is then removed and the ends of the crystals provided with metal layers which serve as electrical contacts.
Inventors
- 👤 W Knippenberg
- 👤 G Verspui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:12
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/32; C; C03; C03C; C03C27/00; C03C27/02; C30; C30B; C30B11/00; C30B11/04; C30B11/08; C30B11/12; H10; H10W; H10W72/00; H10W72/20; Y; Y10; Y10S; Y10S148/00; Y10S148/107; Y10S148/17; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204; Y10T29/49208; Y10T29/4921; Y10T29/49211; Y10T29/4922
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
151 words
A method of manufacturing an array of conductive lead-in members comprising the steps of depositing a metallic dot on discrete areas of a crystalline substrate to form a plurality of spaced metallic areas thereon, heating said substrate with said deposited metallic dots to a temperature at which said metal melts in an atmosphere containing the constituents of said leadin members whereby the constituents of said atmosphere are dissolved in the molten metallic dots, epitaxially depositing from the molten metallic dots said constituents of said atmosphere on the crystalline substrate in the form of whiskers at the locations of the spaced metallic areas, placing an open ended mould on top of said substrate surrounding said whiskers, filling said mould with an insulating material, removing the substrate from The whiskers, grinding the ends of the whiskers smooth, and depositing a conductive metal contact at both ends of at least part of the whiskers.
Claim 2
Independent Claim
151 words
A method of manufacturing an array of conductive lead-in members comprising the steps of depositing a metallic dot on discrete areas of a crystalline substrate to form a plurality of spaced metallic areas thereon, heating said substrate with said deposited metallic dots to a temperature at which said metal melts in an atmosphere containing the constituents of said leadin members whereby the constituents of said atmosphere are dissolved in the molten metallic dots, epitaxially depositing from the molten metallic dots said constituents of said atmosphere on the crystalline substrate in the form of whiskers at the locations of the spaced metallic areas, placing an open ended mould on top of said substrate surrounding said whiskers, filling said mould with an insulating material, removing the substrate from The whiskers, grinding the ends of the whiskers smooth, and depositing a conductive metal contact at both ends of at least part of the whiskers.
Claim 3
Dependent Claim
25 words
A method as claimed in claim 1 in which the substrate is silicon, the metal is gold, and the atmosphere is hydrogen containing silicon tetrachloride.
Claim 4
Dependent Claim
26 words
A method as claimed in claim 1 in which the substrate is silicon carbide, the metal is iron, and the atmosphere is hydrogen containing methyl chlorosilane.
Claim 5
Dependent Claim
14 words
A method as claimed in claim 1 in which the insulating material is glass.
Claim 6
Dependent Claim
16 words
A method as claimed in claim 1 in which the insulating material is an epoxy resin.
Claim 7
Dependent Claim
18 words
A method as claimed in claim 2 in which the ends of the whiskers are coated with copper.
Claim 8
Dependent Claim
18 words
A method as claimed in claim 3 in which the ends of the whiskers are coated with gold.
Claim 9
Independent Claim
135 words
A method of manufacturing an array of conductive lead-in members comprising the steps of depositing a metallic dot on discrete areas of a crystalline substrate to form a plurality of spaced metallic areas thereon, heating said substrate with said deposited metallic dots to a temperature at which said metal melts in an atmosphere containing the constituents of said lead-in members whereby the constituents of said atmosphere are dissolved in the molten metallic dots, epitaxially depositing from the molten metallic dots said constituents of said atmosphere on the crystalline substrate in the form of whiskers at the locations of the spaced metallic areas, filling the spaces between the whiskers with an insulating material, removing the substrate from the whiskers and insulating material, and depositing conductive material at both ends of at least part of the whiskers.
Claim 10
Independent Claim
135 words
A method of manufacturing an array of conductive lead-in members comprising the steps of depositing a metallic dot on discrete areas of a crystalline substrate to form a plurality of spaced metallic areas thereon, heating said substrate with said deposited metallic dots to a temperature at which said metal melts in an atmosphere containing the constituents of said lead-in members whereby the constituents of said atmosphere are dissolved in the molten metallic dots, epitaxially depositing from the molten metallic dots said constituents of said atmosphere on the crystalline substrate in the form of whiskers at the locations of the spaced metallic areas, filling the spaces between the whiskers with an insulating material, removing the substrate from the whiskers and insulating material, and depositing conductive material at both ends of at least part of the whiskers.
Claim 11
Dependent Claim
30 words
The method as claimed in claim 8 further comprising, before depositing conductive material, the additional step of grinding to flatness the surface of the insulating material opposite to the substrate.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |