U.S. patents available from 1976 to present.
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Process of mounting tape automated bonded semiconductor chip on printed circuit board through bumps

Patent 5474957 Issued on December 12, 1995. Estimated Expiration Date: Icon_subject April 28, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Carrier tape including molten resin flow path element for resin packaged semiconductor devices
Patent #: 5064706
Issued on: 11/12/1991
Inventor: Ueda, et al.

Method for electroplating the lead pins of a semiconductor device pin grid array package
Patent #: 5240588
Issued on: 08/31/1993
Inventor: Uchida

Semiconductor chip assemblies with fan-in leads
Patent #: 5258330
Issued on: 11/02/1993
Inventor: Khandros, et al.

Process for manufacturing a multilayer integrated circuit interconnection
Patent #: 5262351
Issued on: 11/16/1993
Inventor: Bureau, et al.

Semiconductor chip assemblies and methods of making same
Patent #: 5346861
Issued on: 09/13/1994
Inventor: Khandros, et al.

Method of making an electronic assembly having a flexible circuit wrapped around a substrate
Patent #: 5362656
Issued on: 11/08/1994
Inventor: McMahon

Method for making high pin count package for semiconductor device
Patent #: 5376588
Issued on: 12/27/1994
Inventor: Pendse

Process for assembling a TAB grid array package for an integrated circuit Patent #: 5409865
Issued on: 04/25/1995
Inventor: Karnezos

Inventor

Assignee

Application

No. 430590 filed on 04/28/1995

US Classes:

29/827, Beam lead frame or beam lead device29/840, By metal fusion257/E23.055, Consisting of thin flexible metallic tape with or without film carrier (EPO)257/E23.069, Spherical bumps on substrate for external connection, e.g., ball grid arrays (BGA) (EPO)257/E23.133, Coating also covering sidewalls of semiconductor body (EPO)438/122, Possessing thermal dissipation structure (i.e., heat sink)438/123, Lead frame438/125Insulative housing or support

Examiners

Primary: Picardat, Kevin M.

International Class

H01L 021/60

Foreign Application Priority Data

1994-05-09 JP

Abstract

Conductive leads are connected at inner ends thereof to electrodes of a semiconductor chip through a tape automated bonding process, and bumps are formed on the other ends of the conductive leads so as to economically and reliably mount the semiconductor chip on a circuit board through a concurrent reflow.

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