EP0159443A2
Expired / Lapsed
EP
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Method of forming conductor path
Assignee: Toshiba Corp
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Filing: 1984-11-27
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Granted: —
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Expires: 2004-11-27
Abstract
Abstract A conductor path (14) is formed by providing an insulating substrate (11) having a surface region (13) which is formed of an insulating composition. The insulating composition contains an organic polymeric material and at least one metal source. The metal source is a metallic powder and/or an organic compound chemically combining a metal or metals. The surface region (13) of the substrate (11) is selectively heated along a predetermined pattern, thereby decomposing and evaporating the organic polymeric material at the heated portion and welding the metal in the heated portion so as to form a conductor path (14) formed of the metal.
Inventors
- 👤 Hirosi C/O Patent Division Oodaira
- 👤 Haruko C/O Patent Division Suzuki
- 👤 Masayuki C/O Patent Division Saito
- 👤 Masayuki C/O Patent Division Ohuchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 12:59
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/105; H10; H10W; H10W70/00; H10W70/01; H10W70/05; H10W70/098; H10W70/099; H10W70/60; H10W70/611; H10W70/614; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K1/095; H05K2203/00; H05K2203/10; H05K2203/107; H05K2203/11; H05K2203/1131; H05K2203/12; H05K2203/121; H10W90/00; H10W90/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49155
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
97 words
A method of forming a conductor path comprising the steps of: providing an insulating substrate having a surface region which is formed of an insulating composition comprising an organic polymeric material and at least one metal source selected from the group consisting of a metallic powder and an organic compound chemically combining a metal or metals; and selectively heating said surface region along a predetermied pattern, thereby decomposing and evaporating said organic polymeric material at the heated portion and welding said metal in the heated portion so as to form a conductor path formed of said metal.
Claim 2
Independent Claim
97 words
A method of forming a conductor path comprising the steps of: providing an insulating substrate having a surface region which is formed of an insulating composition comprising an organic polymeric material and at least one metal source selected from the group consisting of a metallic powder and an organic compound chemically combining a metal or metals; and selectively heating said surface region along a predetermied pattern, thereby decomposing and evaporating said organic polymeric material at the heated portion and welding said metal in the heated portion so as to form a conductor path formed of said metal.
Claim 3
Dependent Claim
16 words
A method according to claim 1, characterized in that said metal source is the metallic powder.
Claim 4
Dependent Claim
39 words
A method according to claim 2, characterized in that said metallic powder is contained in an amount within a range between 5 and 35% by volume of a total volume of said organic polymeric material and said metallic powder.
Claim 5
Dependent Claim
39 words
A method according to claim 2, characterized in that said metallic powder is contained in an amount within a range between 10 and 20% by volume of a total volume of said organic polymeric material and said metallic powder.
Claim 6
Dependent Claim
22 words
A method according to claim 3, characterized in that said metallic powder has a particle diameter of not more than 0.2 µm.
Claim 7
Dependent Claim
25 words
A method according to claim 5, characterized in that said metallic powder is selected from the group consisting of copper, nickel, aluminum and silver powders.
Claim 8
Dependent Claim
19 words
A method according to claim 1, characterized in that said metal source is the organic compound chemically combining metal.
Claim 9
Dependent Claim
58 words
A method according to claim 7, characterized in that said organic compound is contained in an amount such that the total number of the metal atoms amounts to 0.1 to 20% of the sum of the number of the atoms constituting the organic polymeric material plus the number of the atoms constituting the organic compound chemically combining metal.
Claim 10
Dependent Claim
21 words
A method according to claim 8, characterized in that said total number of the metal atoms amounts to 1 to 10%.
Claim 11
Dependent Claim
33 words
A method according to claim 8, characterized in that said organic compound is selected from the group consisting of an alkyl metal compound, an alkoxy metal compound, metal acetylacetonate and a metal carboxylate.
Claim 12
Dependent Claim
21 words
A method according to claim 1, characterized in that said selective heating step is performed by irradiation with a laser beam.
Claim 13
Dependent Claim
33 words
A method according to claim 1, characterized in that said organic polymeric material is selected from the group consisting of a thermoplastic acrylic resin, a thermosetting acrylic resin and a polyvinyl butyral resin.
Claim 14
Dependent Claim
19 words
A method according to claim 1, characterized in that said insulating substrate is entirely formed of said insulating composition.
References Cited (Backward Citations)
No citation records indexed.
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