US5208068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamination method for coating the sidewall or filling a cavity in a substrate
Assignee: International Business Machines Corp
•
Filing: 1990-12-13
•
Granted: 1993-05-04
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Expires: 2010-12-13
Abstract
Abstract Method for pressing a material into a through-hole or blind-hole in a substrate. The material is disposed on the surface of the substrate. An environment is provided permitting the material to flow for example by heating the material to the glass transition temperature or above. Thereafter pressure is applied causing the material to flow, first coating the sidewall of the hole and on the continued application of pressure the material flows to completely fill the hole. The resulting substrate can have a substantially planar surface having holes with the periphery coated with or completely filled with the material. The material is preferably a thermoplastic polymeric material such as a polyimide and a perfluorinated polymer.
Inventors
- 👤 Charles R. Davis
- 👤 Ronald D. Goldblatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:07
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/36; B23K26/38; B23K26/382; B23K26/361; B23K26/389; B23K26/40; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/05; H05K1/056; H05K3/00; H05K3/44; H05K3/445; B23K2101/00; B23K2101/34; B23K2101/35; B23K2103/00; B23K2103/08; B23K2103/10; B23K2103/12; B23K2103/16; B23K2103/166; B23K2103/50; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0129; H05K2201/09; H05K2201/09209; H05K2201/095; H05K2201/09581; H05K2203/00; H05K2203/02; H05K2203/0278; H05K2203/06; H05K2203/068; H05K2203/14; H05K2203/1438
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
113 words
A method comprising: providing a substrate having a substantially solvent free material layer on at least a part of a surface of said substrate, there being a cavity having a sidewall in said substrate extending at least to said layer; providing an environment sufficient for said material layer to flow; pressing said material towards said substrate causing said material layer to flow into said cavity; and said material layer first flows down said sidewall forming a coating which substantially coats said sidewall, on continued pressing of said material layer said coating thickens; and controlling said pressing to control the thickness of said coating to be less than sufficient to completely fill said cavity.
Claim 2
Independent Claim
113 words
A method comprising: providing a substrate having a substantially solvent free material layer on at least a part of a surface of said substrate, there being a cavity having a sidewall in said substrate extending at least to said layer; providing an environment sufficient for said material layer to flow; pressing said material towards said substrate causing said material layer to flow into said cavity; and said material layer first flows down said sidewall forming a coating which substantially coats said sidewall, on continued pressing of said material layer said coating thickens; and controlling said pressing to control the thickness of said coating to be less than sufficient to completely fill said cavity.
Claim 3
Dependent Claim
24 words
The method of claim 1, wherein said step of providing an environment sufficient for said material layer to flow is heating said material layer.
Claim 4
Dependent Claim
21 words
The method of claim 2, wherein said material layer is heated to at least the glass transition temperature of said material.
Claim 5
Dependent Claim
20 words
The method of claim 2, wherein said material layer is heated to at least the melting temperature of said material.
Claim 6
Dependent Claim
16 words
The method of claim 1, wherein said material which flows into said cavity wets said substrate.
Claim 7
Dependent Claim
27 words
The method of claim 1, wherein said material which flows into said cavity has a lower surface free energy than the surface free energy of said substrate.
Claim 8
Dependent Claim
12 words
The method of claim 1, wherein said cavity extends through said substrate.
Claim 9
Dependent Claim
29 words
The method of claim 1, wherein one end of said cavity extends through the surface of said substrate and the other end of said cavity terminates within said substrate.
Claim 10
Dependent Claim
53 words
The method of claim 7, wherein said substrate has a first and second major surface and wherein said material layer is disposed on said first and said second major surface and wherein said cavity extends from said first and second major surface through said material layer on said first and second major surfaces.
Claim 11
Dependent Claim
16 words
The method of claim 1, wherein said material layer is pressed to coat said cavity sidewall.
Claim 12
Dependent Claim
20 words
The method of claim 8, wherein said material layer is pressed to coat said cavity sidewall and said cavity bottom.
Claim 13
Dependent Claim
56 words
The method of claim 1, wherein said cavity has a cross sectional dimension less than about 10 mils and a depth of less than about 10 mils, wherein there are a plurality of said cavities each of which is spaced from an adjacent cavity at a distance less than about twice said minimum cross sectional dimension.
Claim 14
Dependent Claim
11 words
The method of claim 1, wherein said substrate is a conductor.
Claim 15
Dependent Claim
20 words
The method of claim 13, wherein said conductor is selected form the group consisting of Al, Cu, Mo and Cu-Invar-Cu.
Claim 16
Dependent Claim
13 words
The method of claim 1, wherein said material layer is a polymeric material.
Claim 17
Dependent Claim
14 words
The method of claim 15, wherein said polymeric material is a thermoplastic polymeric material.
Claim 18
Dependent Claim
25 words
The method of claim 15, wherein said polymeric material is selected from the group consisting of polyimide materials, fluorinated polymeric materials and polyamic acid materials.
Claim 19
Dependent Claim
35 words
The method of claim 1, wherein said material layer is pressed towards said substrate by placing said substrate with said material layer thereon between a first and second platen which are pressed towards each other.
Claim 20
Dependent Claim
15 words
The method of claim 1, wherein said pressed material layer has a substantially planar surface.
Claim 21
Dependent Claim
25 words
The method of claim 1, wherein said cavity is formed by a method selected from the group consisting of punching, drilling, laser ablation and etching.
Claim 22
Dependent Claim
35 words
The method of claim 1, further including after forming said cavity, removing a predetermined amount of said substrate along the sidewall of said cavity leaving a predetermined amount of said material layer overhanging said cavity.
Claim 23
Dependent Claim
90 words
The method of claim 1, wherein said material is selected from the group of polyimides, polyamic acids, perfluorinated polymers, poly(dienes), poly(alkenes), poly(acrylics), poly(methacrylics), poly(vinyl ethers), poly(vinyl thioethers), poly(vinyl alcohol), poly(vinyl ketones), poly(vinyl halides), poly (vinyl nitriles), poly(vinyl esters), poly(styrenes), poly(phenylenes), poly(oxides), poly(carbonates), poly(esters), poly(anhydrides), poly(urethanes), poly(sulfonates), Nitroso-polymers, poly(siloxanes), poly(sulfides), poly(thioesters), poly(sulfones), poly(sulfonamides), poly(amides), poly(imines), poly(ureas), poly(phosphazenes), poly(silanes), poly(silazanes), poly(furan tetracarboxylic acid diimides), poly(benzoxazoles), poly(oxadiazoles), poly(benzothiazinophenothiazines), poly(benzothiazoles), poly(pyrazinoquinoxalines), poly(pyromellitimides), poly(quinoxalines), poly(benzimidazoles), poly(oxindoles), poly(oxoisoindolines), poly(dioxoisoindolines), poly(triazines), poly(pyridazines), poly(piperazines), poly(pyridines), poly(piperidenes), poly(triazoles), poly(pyrazoles), poly(pyrrolidines), poly(carboranes), poly(fluoresceins), poly(oxabicyclononanes), poly(dibenzofurans), poly(phthalides), poly(acetals) poly(anhydrides) and carbohydrates.
Claim 24
Dependent Claim
15 words
The method of claim 1, wherein said an electrical conductor is provided in said cavity.
Claim 25
Dependent Claim
24 words
The method of claim 1, wherein said step of providing an environment sufficient for said material layer to flow is cooling said material layer.
Claim 26
Independent Claim
122 words
A method comprising: providing a substrate having a substantially solvent free material layer on at least a part of a surface of said substrate, there being a cavity having a sidewall in said substrate extending at least to said layer; providing an environment sufficient for said material layer to flow; pressing said material towards said substrate causing said material layer to flow into said cavity; said material layer first flows down said sidewall forming a coating which substantially coats said sidewall unit until said material reaches an obstruction in said cavity, on continued pressing of said material layer, said coating thickens; and controlling said pressing to control the thickness of said coating to be less than sufficient to completely fill said cavity.
Claim 27
Independent Claim
122 words
A method comprising: providing a substrate having a substantially solvent free material layer on at least a part of a surface of said substrate, there being a cavity having a sidewall in said substrate extending at least to said layer; providing an environment sufficient for said material layer to flow; pressing said material towards said substrate causing said material layer to flow into said cavity; said material layer first flows down said sidewall forming a coating which substantially coats said sidewall unit until said material reaches an obstruction in said cavity, on continued pressing of said material layer, said coating thickens; and controlling said pressing to control the thickness of said coating to be less than sufficient to completely fill said cavity.
Claim 28
Dependent Claim
14 words
The method of claim 25, wherein said obstruction is a bottom of said cavity.
Claim 29
Dependent Claim
20 words
The method of claim 25, wherein said obstruction is said material layer flowing along said sidewall from the opposite direction.
Claim 30
Independent Claim
120 words
A method comprising: providing a substrate having a substantially solvent free material layer on at least a part of a surface of said substrate, there being a cavity having a sidewall in said substrate extending at least to said layer; providing an environment sufficient for said material layer to be in a viscoelastic state permitting it to flow; pressing said material towards said substrate causing said material layer to flow into said cavity; said material layer first flows down said sidewall forming a coating which substantially coats said sidewall, on continued pressing of said material layer said coating thickens; and controlling said pressing to control the thickness of said coating to be less than sufficient to completely fill said cavity.
Claim 31
Independent Claim
120 words
A method comprising: providing a substrate having a substantially solvent free material layer on at least a part of a surface of said substrate, there being a cavity having a sidewall in said substrate extending at least to said layer; providing an environment sufficient for said material layer to be in a viscoelastic state permitting it to flow; pressing said material towards said substrate causing said material layer to flow into said cavity; said material layer first flows down said sidewall forming a coating which substantially coats said sidewall, on continued pressing of said material layer said coating thickens; and controlling said pressing to control the thickness of said coating to be less than sufficient to completely fill said cavity.
Claim 32
Independent Claim
130 words
A method comprising: providing a substrate having a substantially solvent free material layer on at least a part of a surface of said substrate, there being a cavity having a sidewall in said substrate extending at least to said layer; providing an environment sufficient for said material layer to be in a viscoelastic state permitting it to flow; pressing said material towards said substrate causing said material layer to flow into said cavity; said material layer first flows down said sidewall forming a coating which substantially coats said sidewall until said material layer reaches an obstruction in said cavity, on continued pressing of said material layer, said coating thickens; and controlling said pressing to control the thickness of said coating to be less than sufficient to completely fill said cavity.
Claim 33
Independent Claim
130 words
A method comprising: providing a substrate having a substantially solvent free material layer on at least a part of a surface of said substrate, there being a cavity having a sidewall in said substrate extending at least to said layer; providing an environment sufficient for said material layer to be in a viscoelastic state permitting it to flow; pressing said material towards said substrate causing said material layer to flow into said cavity; said material layer first flows down said sidewall forming a coating which substantially coats said sidewall until said material layer reaches an obstruction in said cavity, on continued pressing of said material layer, said coating thickens; and controlling said pressing to control the thickness of said coating to be less than sufficient to completely fill said cavity.
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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) | 1996-05-03 | 1996-11-02 | 1997-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-03 | 2000-11-02 | 2001-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-03 | 2004-11-02 | 2005-05-04 | $7700.00 | Window Closed / Lapsed |