U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Non-conductive and self-leveling leadframe clamp insert for wirebonding integrated circuits

Patent 6375061 Issued on April 23, 2002. Estimated Expiration Date: Icon_subject October 3, 2020. 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

3566207

3685137

3840169

4030657

Apparatus for wire bonding
Patent #: 4361261
Issued on: 11/30/1982
Inventor: Elles ,   et al.

Lead frame wire bonding by preheating
Patent #: 4434347
Issued on: 02/28/1984
Inventor: Kurtz ,   et al.

Wire bonding apparatus
Patent #: 4527730
Issued on: 07/09/1985
Inventor: Shirai ,   et al.

Bonding tool and clamp assembly and wire handling method
Patent #: 4600138
Issued on: 07/15/1986
Inventor: Hill

Wire bonding apparatus
Patent #: 4603803
Issued on: 08/05/1986
Inventor: Chan ,   et al.

Voice coil actuated fine wire clamp
Patent #: 4653681
Issued on: 03/31/1987
Inventor: Dreibelbis ,   et al.

More ...

Inventors

Application

No. 678273 filed on 10/03/2000

US Classes:

228/212, With clamping or holding228/44.7, Work portion comprises electrical component228/106, Using a compliant cushioning medium228/180.5Wire bonding

Examiners

Primary: Dunn, Tom
Assistant: Stoner, Kiley

Attorney, Agent or Firm

International Classes

B23K 031/02
B23K 037/04

Abstract

A leadframe clamping apparatus includes a resilient polymeric membrane which permits self-leveling compensation of a variably movable clamp insert for variations in leadframe thickness. The clamp insert is formed of a polymer such as polyimide to provide further compensation for leadframe variations.

Other References

  • H.K. Charles; "Electrical Interconnection"; pp. 224-236. (No date available
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