US5220486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ic packing device
Assignee: Toshiba Corp
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Filing: 1991-09-11
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Granted: 1993-06-15
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Expires: 2011-09-11
Abstract
Abstract An IC packing device comprises a semiconductor device, a piece of flexible resin film provided with an opening for receiving the semiconductor, wires arranged on the piece of flexible resin film and slits cut into the piece of film from the edges of the opening. The slits cut into the flexible resin film allow the film to be flexed downward toward the semiconductor, along with the wires which to establish electrical connection with the semiconductor. In this manner, the downwardly bent flexible film provides reduction in the possibility of a wire breaking due to excessive bending of the wire in order to make contact with the semiconductor.
Inventors
- 👤 Chiaki Takubo
- 👤 Hiroshi Tazawa
- 👤 Yoshiharu Tsuboi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:15
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/701; H10W40/00; H10W40/70; H10W40/77; H10W40/778; H10W70/00; H10W70/40; H10W70/464; H10W70/466; H10W72/851; H10W72/874; H10W72/877
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
173 words
An IC packing device comprising; a semiconductor device; a flexible resin film piece obtained by cutting a flexible resin film strip provided with a plurality of perforations arranged at a predetermined pitch, said flexible resin film piece being provided with a square opening having a plurality of diagonals in which said semiconductor device is received, and at least one slit which is cut into said flexible resin film piece from an edge of said square opening along at least one of the diagonals of said square opening and is formed as a part of said square opening; and wires arranged on said flexible resin film piece and electrically connected to said semiconductor device, wherein said wires are disposed in a plane above a top surface of said semiconductor, and wherein said at least one slit which is cut into said flexible resin film piece reduces a possibility of breakage of said wires by reducing an amount of bending required by said wires in realizing electrical connection between said wires and said semiconductor device.
Claim 2
Dependent Claim
173 words
An IC packing device comprising; a semiconductor device; a flexible resin film piece obtained by cutting a flexible resin film strip provided with a plurality of perforations arranged at a predetermined pitch, said flexible resin film piece being provided with a square opening having a plurality of diagonals in which said semiconductor device is received, and at least one slit which is cut into said flexible resin film piece from an edge of said square opening along at least one of the diagonals of said square opening and is formed as a part of said square opening; and wires arranged on said flexible resin film piece and electrically connected to said semiconductor device, wherein said wires are disposed in a plane above a top surface of said semiconductor, and wherein said at least one slit which is cut into said flexible resin film piece reduces a possibility of breakage of said wires by reducing an amount of bending required by said wires in realizing electrical connection between said wires and said semiconductor device.
Claim 3
Dependent Claim
56 words
An IC packing device according to claim 1, wherein said flexible resin film piece is further provided with at least one additional slit which is selectively cut into said flexible resin film piece from an edge of said square opening along and between two adjacent wires and is formed as a part of said square opening.
Claim 4
Dependent Claim
42 words
An IC packing device according to claim 1, further comprising heat emitting means in contact with a first surface of said flexible resin film piece opposite to a second surface of said flexible resin film piece on which said wires are arranged.
Claim 5
Dependent Claim
167 words
An IC packing device comprising; a semiconductor device; a flexible resin film piece obtained by cutting a flexible resin film strip provided with a plurality of perforations arranged at a predetermined pitch, said flexible resin film piece being provided with a square opening having a plurality of diagonals in which said semiconductor device is received and at least one slit which is selectively cut into said flexible resin film piece from any edge of said square opening except a corner region thereof and is formed as a part of said square opening; and wires arranged on said flexible resin film piece and connected to said semiconductor device, wherein said wires are disposed in a plane above a top surface of said semiconductor, and wherein said at least one slit which is cut into said flexible resin film piece reduces a possibility of breakage of said wires by reducing an amount of bending required by said wires in realizing electrical connection between said wires and said semiconductor device.
Claim 6
Dependent Claim
167 words
An IC packing device comprising; a semiconductor device; a flexible resin film piece obtained by cutting a flexible resin film strip provided with a plurality of perforations arranged at a predetermined pitch, said flexible resin film piece being provided with a square opening having a plurality of diagonals in which said semiconductor device is received and at least one slit which is selectively cut into said flexible resin film piece from any edge of said square opening except a corner region thereof and is formed as a part of said square opening; and wires arranged on said flexible resin film piece and connected to said semiconductor device, wherein said wires are disposed in a plane above a top surface of said semiconductor, and wherein said at least one slit which is cut into said flexible resin film piece reduces a possibility of breakage of said wires by reducing an amount of bending required by said wires in realizing electrical connection between said wires and said semiconductor device.
Claim 7
Dependent Claim
42 words
An IC packing device according to claim 4, further comprising heat emitting means in contact with a first surface of said flexible resin film piece opposite to a second surface of said flexible resin film piece on which said wires are arranged.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-06-14 | 1996-12-14 | 1997-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-14 | 2000-12-14 | 2001-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-14 | 2004-12-14 | 2005-06-15 | $7700.00 | Window Closed / Lapsed |