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US5173369A
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US
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Tape carrier having connection function
Assignee: Mitsui Kinzoku Co Ltd
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Filing: 1990-10-19
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Granted: 1992-12-22
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Expires: 2010-10-19
Abstract
Abstract A tape carrier having a connection function prepared by etching a metal foil to form an conductive pattern comprising outer leads and inner leads on a starting tape carrier and then providing, by plating, the connection portion of at least one group of said outer and inner lead groups with nodules for connecting said at least one group of the leads to a mating conductive pattern via the nodules.
Inventors
- 👤 Tatsuo Kataoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:18
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0446; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/321; H05K3/36; H05K3/361; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0388; H05K2201/0394; H05K2201/0397; H05K2203/00; H05K2203/02; H05K2203/0278; H05K2203/03; H05K2203/0307; H05K3/40; H05K3/4007; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528; Y10T428/12535; Y10T428/12556
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
94 words
A tape carrier having a connection function prepared by etching a metal foil to form a conductive pattern comprising outer leads and inner leads on a starting tape carrier, then providing, by plating, a connection portion of at least one group of said outer and inner lead groups with nodules for connecting said at least one group of the leads to a mating conductive pattern via the nodules, and then applying a thermosetting or thermoplastic adhesive between the nodules formed portion and said mating conductive pattern and thermo-compressive-bonding the conductive patterns to each other.
Claim 2
Dependent Claim
94 words
A tape carrier having a connection function prepared by etching a metal foil to form a conductive pattern comprising outer leads and inner leads on a starting tape carrier, then providing, by plating, a connection portion of at least one group of said outer and inner lead groups with nodules for connecting said at least one group of the leads to a mating conductive pattern via the nodules, and then applying a thermosetting or thermoplastic adhesive between the nodules formed portion and said mating conductive pattern and thermo-compressive-bonding the conductive patterns to each other.
Claim 3
Dependent Claim
25 words
A tape carrier having a connection function according to claim 1, wherein said nodules are Cu or Au and have a height of 3-25 μm.
Claim 4
Dependent Claim
25 words
A tape carrier having a connection function according to claim 2, wherein said nodules are dendritic Cu precipitates obtained from a copper sulfate plating bath.
Claim 5
Dependent Claim
22 words
A tape carrier having a connection function according to claim 7, said Au nodules are obtained from a gold cyanide plating bath.
Claim 6
Dependent Claim
28 words
A tape carrier according to claim 2, wherein said Cu or Au nodules are plated with Ni and then with Au to fix said nodules on the leads.
Claim 7
Dependent Claim
23 words
A tape carrier according to claim 3, wherein said plating bath is partly operated at a current density of 5-30 A/dm 2 .
Claim 8
Dependent Claim
38 words
A tape carrier according to claim 3, wherein said plating bath is incorporated with a member selected from the group consisting of β-naphthoquinoline and α-naphthoquinoline and is partly operated at a current density of 50-150 A/dm 2 .
Claim 9
Dependent Claim
24 words
A tape carrier according to claim 4, wherein said plating bath is partly operated at a current density of about 20 A/dm 2 .
Claim 10
Dependent Claim
35 words
The tape carrier according to claim 1, wherein said thermo-compressing bonding is carried out at a temperature of 100°-180° C. and a pressure of 5 kg/cm 2 up to 30 kg/cm 2 for 2-20 seconds.
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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) | 1995-12-22 | 1996-06-22 | 1996-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-22 | 2000-06-22 | 2000-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-22 | 2004-06-22 | 2004-12-22 | $7700.00 | Window Closed / Lapsed |