US5095361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape-like carrier for mounting of integrated circuit
Assignee: NEC Corp
•
Filing: 1989-12-27
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Granted: 1992-03-10
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Expires: 2009-12-27
Abstract
Abstract A tape-like carrier for mounting of an integrated circuit including leads secured to a flexible insulating film has metallic radiation films provided on the flexible insulating film around each aperture formed in the film for a semiconductor pellet. The leads project from the respective metallic radiation film inwardly of the respective aperture. Heat of the leads during an inner lead bonding is immediately conducted to the metallic radiation film and released from the surface thereof so that heat of the leads can be more efficiently removed from the leads during the inner lead bonding.
Inventors
- 👤 Yuji Iwata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:29
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/701; H10W70/00; H10W70/40; H10W70/453; H10W72/071; H10W72/077; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49121
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
184 words
A tape-like carrier for mounting an integrated circuit, comprising: a tape-shaped flexible insulating film formed at two opposite edge regions thereof with sprocket holes; said film including a plurality of apertures each having a size dimensioned to encompass a contact region of a semiconductor pellet, said apertures being provided in a length-wise direction of said tape-shaped flexible insulating film; heat radiation metallic films attached to one of surfaces of said insulating film and provided over the area thereof to peripherally surround all upper edges of each of said apertures; conductive bars provided on said film in spaced relationship from said sprocket holes so that adjacent metallic films are connected to each other by said conductive bars and are spaced from said sprocket holes; and leads extending from a respective edge of each of said metallic films inwardly of the aperture towards said contact region without overlapping said insulating film so as to be able to contact said contact region of said semiconductor pellet, said metallic films forming metal regions around the upper edges of each aperture to provide efficient heat dissipation of said leads.
Claim 2
Dependent Claim
184 words
A tape-like carrier for mounting an integrated circuit, comprising: a tape-shaped flexible insulating film formed at two opposite edge regions thereof with sprocket holes; said film including a plurality of apertures each having a size dimensioned to encompass a contact region of a semiconductor pellet, said apertures being provided in a length-wise direction of said tape-shaped flexible insulating film; heat radiation metallic films attached to one of surfaces of said insulating film and provided over the area thereof to peripherally surround all upper edges of each of said apertures; conductive bars provided on said film in spaced relationship from said sprocket holes so that adjacent metallic films are connected to each other by said conductive bars and are spaced from said sprocket holes; and leads extending from a respective edge of each of said metallic films inwardly of the aperture towards said contact region without overlapping said insulating film so as to be able to contact said contact region of said semiconductor pellet, said metallic films forming metal regions around the upper edges of each aperture to provide efficient heat dissipation of said leads.
Claim 3
Dependent Claim
27 words
A tape-like carrier for mounting an integrated circuit as in claim 1, wherein the edges of said metallic films extend along a periphery of the respective aperture.
Claim 4
Dependent Claim
26 words
A tape-like carrier for mounting an integrated circuit as claimed in claim 1, wherein each of said leads is integral with one of said metallic films.
Claim 5
Dependent Claim
26 words
A tape-like carrier for mounting an integrated circuit as claimed in claim 1, wherein said metallic films have the thickness greater than that of said leads.
Claim 6
Dependent Claim
25 words
A tape-like carrier for mounting an integrated circuit as claimed in claim 4, wherein each of said leads is integral with a respective metallic film.
Claim 7
Dependent Claim
26 words
A tape-like carrier for mounting an integrated circuit as claimed in claim 1, wherein said metallic films each include a film made of metal or alloy.
Claim 8
Dependent Claim
27 words
A tape-like carrier for mounting an integrated circuit as claimed in claim 1, wherein said metallic films each include a film made of copper or copper alloy.
Claim 9
Dependent Claim
22 words
A tape-like carrier for mounting an integrated circuit as claimed in claim 1, wherein said flexible insulating film is a polyimide film.
Claim 10
Dependent Claim
35 words
A tape-like carrier for mounting an integrated circuit as claimed in claim 1, wherein contact regions of a plurality of semiconductor pellets provided on said film are regions of the pellets including plural bump electrodes.
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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) | 1995-03-10 | 1995-09-09 | 1996-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-10 | 1999-09-09 | 2000-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-10 | 2003-09-09 | 2004-03-10 | $7700.00 | Window Closed / Lapsed |