US4615763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roughening surface of a substrate
Assignee: International Business Machines Corp
•
Filing: 1985-01-02
•
Granted: 1986-10-07
•
Expires: 2005-01-02
Abstract
Abstract The surface of a substrate is roughened by providing a substrate which comprises a resinous material and an inorganic particulate material; and etching a surface of the substrate to selectively etch the resinous material and thereby produce the roughened surface.
Inventors
- 👤 Jeffrey D. Gelorme
- 👤 William H. Lawrence
- 👤 Peter Slota, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:18
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/38; H05K3/381; C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/22; H05K2201/00; H05K2201/02; H05K2201/0203; H05K2201/0206; H05K2201/0209; H05K2203/00; H05K2203/09; H05K2203/095; H05K3/10; H05K3/18; H05K3/181
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
63 words
A method of improving the adhesion between a photosensitive adhesive and a dielectric substrate which comprises roughening the surface of said dielectric substrate by: providing a substrate comprising a resinous material and inorganic particulate material; etching a surface of said substrate which selectively etches said resinous material to thereby provide a roughened surface; and then coating a photosensitive adhesive onto said roughened surface.
Claim 2
Independent Claim
63 words
A method of improving the adhesion between a photosensitive adhesive and a dielectric substrate which comprises roughening the surface of said dielectric substrate by: providing a substrate comprising a resinous material and inorganic particulate material; etching a surface of said substrate which selectively etches said resinous material to thereby provide a roughened surface; and then coating a photosensitive adhesive onto said roughened surface.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein said resinous material comprises an epoxy resin.
Claim 4
Dependent Claim
37 words
The method of claim 1 wherein said inorganic particulate material is selected from the group of SiO 2 , CaCO 3 , Al 2 O 3 , CaO 2 , SiC, CaF 2 , and mixtures thereof.
Claim 5
Dependent Claim
12 words
The method of claim 1 wherein said inorganic particulate material comprises silica.
Claim 6
Dependent Claim
28 words
The method of claim 1 wherein said inorganic particulate material is an aggregate of fused spherical particles having an aggregate size of about 0.002 to about 10 microns.
Claim 7
Dependent Claim
16 words
The method of claim 5 wherein said aggregate size is about 0.1 to about 1 micron.
Claim 8
Dependent Claim
33 words
The method of claim 1 wherein the amount of said inorganic particulate material is about 1% to about 10% by weight based upon the total of said resinous material and inorganic particulate material.
Claim 9
Dependent Claim
33 words
The method of claim 1 wherein the amount of said inorganic particulate material is about 4% to about 8% by weight of the total of said resinous material and said inorganic particulate material.
Claim 10
Dependent Claim
12 words
The method of claim 1 wherein said substrate also contains reinforcing fibers.
Claim 11
Dependent Claim
12 words
The method of claim 1 wherein said reinforcing fibers are glass fibers.
Claim 12
Dependent Claim
39 words
The method of claim 8 wherein the amount of the combination of resinous material and inorganic particulate material is about 30% to about 70% by weight of the total of the resinous material, inorganic particulate material, and reinforcing fibers.
Claim 13
Dependent Claim
16 words
The method of claim 8 wherein said amount is about 55% to about 65% by weight.
Claim 14
Dependent Claim
13 words
The method of claim 1 wherein said etching is a dry etching process.
Claim 15
Dependent Claim
13 words
The method of claim 1 wherein said etching is a plasma etching process.
Claim 16
Dependent Claim
29 words
The method of claim 14 wherein said plasma etching employs a gas containing CF 4 and O 2 in a ratio of about 4:96 to about 65:35 by volume.
Claim 17
Dependent Claim
22 words
The method of claim 1 which further comprises catalyzing the roughened surface for subsequent deposition of copper from an electroless plating bath.
Claim 18
Dependent Claim
14 words
The method of claim 1 wherein said photosensitive adhesive is a negative photosensitive adhesive.
Claim 19
Dependent Claim
15 words
The method of claim 17 wherein said negative photosensitive adhesive is a polymer from methylmethacrylate.
Claim 20
Dependent Claim
13 words
The method of claim 17 wherein said resinous material comprises an epoxy resin.
References Cited (Backward Citations)
US2663663A
Cited
US3625758A
Cited
US3801427A
Cited
US3795557A
Cited
US3884771A
Cited
US3978252A
Cited
US4152477A
Cited
US4216246A
Cited
US4113899A
Cited
US4147564A
Cited
US4180432A
Cited
US4281038A
Cited
US4283249A
Cited
US4325991A
Cited
US4469777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-06 | 1990-04-07 | 1990-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-06 | 1994-04-07 | 1994-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-06 | 1998-04-07 | 1998-10-07 | $7700.00 | Window Closed / Lapsed |