US5612259A
Expired / Lapsed
US
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Method for manufacturing a semiconductor device wherein a semiconductor chip is mounted on a lead frame
Assignee: Toshiba Corp
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Filing: 1995-07-16
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Granted: 1997-03-18
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Expires: 2015-07-16
Abstract
Abstract In a semiconductor device and a method for manufacturing the same according to the present invention, each of electrode pads on a semiconductor chip is bonded to an inner lead section of each of leads of a carrier tape by a connecting electrode. An insulating film of the carrier tape is then adhered to the surface of the semiconductor chip by interposing an adhesive layer between them. Thus, the electrode pads and inner lead sections are stably bonded, and the flatness of the carrier tape is maintained by the flatness of the surface of the semiconductor chip. It is thus possible to prevent the flatness of the outer lead sections of the leads from being degraded when the number of leads is small, and to improve in mounting the semiconductor chip by reflow soldering.
Inventors
- 👤 Takayuki Okutomo
- 👤 Morihiko Ikemizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:36
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/071; H10W70/00; H10W70/40; H10W70/411; H10W70/415; H10W72/077; H10W72/701; H10W74/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49121
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
81 words
A method for manufacturing a semiconductor device, comprising: a first step of electrically connecting each of a plurality of connecting electrodes formed on a semiconductor chip to a corresponding one of a plurality of lead end portions of each of a plurality of leads of a lead frame; and a second step, following said first step, of fixing part of each of said plurality leads extending on said semiconductor chip to a surface of said semiconductor chip by an adhesive member.
Claim 2
Independent Claim
81 words
A method for manufacturing a semiconductor device, comprising: a first step of electrically connecting each of a plurality of connecting electrodes formed on a semiconductor chip to a corresponding one of a plurality of lead end portions of each of a plurality of leads of a lead frame; and a second step, following said first step, of fixing part of each of said plurality leads extending on said semiconductor chip to a surface of said semiconductor chip by an adhesive member.
Claim 3
Dependent Claim
31 words
The method according to claim 1, wherein said plurality of leads is constituted by a wiring pattern formed of foil provided on an insulating film by interposing an adhesive layer therebetween.
Claim 4
Dependent Claim
38 words
The method according to claim 2, wherein said insulating film is adhered to the surface of said semiconductor chip by said adhesive member to fix each of said plurality of leads to the surface of said semiconductor chip.
Claim 5
Dependent Claim
43 words
The method according to claim 2, wherein each of said plurality of leads is adhered to the surface of said semiconductor chip by said adhesive member to fix part of each of said plurality of leads to the surface of said semiconductor chip.
Claim 6
Dependent Claim
20 words
The method according to claim 1, wherein said plurality of leads is constituted by a wiring pattern formed of foil.
Claim 7
Independent Claim
121 words
A method for manufacturing a semiconductor device, comprising: a first step of electrically connecting each of a plurality of connecting electrodes provided in a central part of a surface of a semiconductor chip to an inner lead section of a corresponding one of each of a plurality of leads by thermocompression, said leads being formed on one of a surface and an undersurface of an insulating film and having an outer lead section as well as the inner lead section; and a second step, following said first step, of adhering one of said insulating film and each of said plurality of leads formed on the undersurface of said insulating film to the surface of said semiconductor chip by an adhesive layer.
Claim 8
Independent Claim
121 words
A method for manufacturing a semiconductor device, comprising: a first step of electrically connecting each of a plurality of connecting electrodes provided in a central part of a surface of a semiconductor chip to an inner lead section of a corresponding one of each of a plurality of leads by thermocompression, said leads being formed on one of a surface and an undersurface of an insulating film and having an outer lead section as well as the inner lead section; and a second step, following said first step, of adhering one of said insulating film and each of said plurality of leads formed on the undersurface of said insulating film to the surface of said semiconductor chip by an adhesive layer.
Claim 9
Dependent Claim
20 words
The method according to claim 6, further comprising an insulation sealing member provided on the surface of said semiconductor chip.
Claim 10
Dependent Claim
23 words
The method according to claim 7, wherein said insulation sealing member is constituted by resin and covers the opening of said insulating film.
Claim 11
Dependent Claim
25 words
The method according to claim 7, wherein said insulation sealing member is constituted by resin and provided only in the opening of said insulating film.
Claim 12
Dependent Claim
25 words
The method according to claim 6, wherein said plurality of leads formed on the undersurface of said insulating film is buried in said adhesive layer.
Claim 13
Dependent Claim
17 words
The method according to claim 6, wherein said plurality of leads is provided with a metallic member.
Claim 14
Dependent Claim
25 words
The method according to claim 11, wherein said metallic member is provided on said plurality of leads formed on the surface of said insulating film.
Claim 15
Dependent Claim
46 words
The method according to claim 12, wherein said metallic member provided on said plurality of leads formed on the surface of said insulating film is equal in size to said semiconductor chip and shaped like a frame having a rectangular hollow in a central part thereof.
Claim 16
Dependent Claim
25 words
The method according to claim 11, wherein said metallic member is provided under said plurality of leads formed on the undersurface of said insulating film.
Claim 17
Dependent Claim
44 words
The method according to claim 14, wherein said metallic member provided under said plurality of leads formed on the undersurface of said insulating film, has a thickness which is shorter than a length of a shaped outer lead section of said plurality of leads.
Claim 18
Dependent Claim
37 words
The method according to claim 14, wherein said metallic member provided under said plurality of leads formed on the undersurface of said insulating film has a thickness which is equal to a thickness of said semiconductor chip.
Claim 19
Independent Claim
87 words
A method for manufacturing a semiconductor device, comprising: a first step of electrically connecting each of plurality of connecting electrodes provided on a surface of a semiconductor chip to an inner lead section of a corresponding one of each of a plurality of leads by thermocompression, said leads having an outer lead section as well as the inner lead section; and a second step, following said first step, of adhering each of said plurality of leads to the surface of said semiconductor chip by an adhesive layer.
Claim 20
Independent Claim
87 words
A method for manufacturing a semiconductor device, comprising: a first step of electrically connecting each of plurality of connecting electrodes provided on a surface of a semiconductor chip to an inner lead section of a corresponding one of each of a plurality of leads by thermocompression, said leads having an outer lead section as well as the inner lead section; and a second step, following said first step, of adhering each of said plurality of leads to the surface of said semiconductor chip by an adhesive layer.
Claim 21
Dependent Claim
22 words
The method according to claim 17, further comprising an insulation sealing member of resin provided on the surface of said semiconductor chip.
Claim 22
Dependent Claim
17 words
The method according to claim 17, wherein said plurality of leads is buried in said adhesive layer.
Claim 23
Dependent Claim
21 words
The method according to claim 7, wherein said insulation sealing member and said adhesive layer are constituted of a same material.
Claim 24
Dependent Claim
21 words
The method according to claim 18, wherein said insulation sealing member and said adhesive layer are constituted of a same material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2000-03-17 | 2000-09-16 | 2001-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-17 | 2004-09-16 | 2005-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-17 | 2008-09-16 | 2009-03-18 | $7700.00 | Window Closed / Lapsed |