System for placement and mounting of fine pitch integrated circu

Details System for placement and mounting of fine pitch integrated circu System for placement and mounting of fine pitch integrated circu

1991-06-11

1993-08-10

Turner, Samuel A.

Optics: measuring and testing

By alignment in lateral direction

356375, 358101, G01B 1127

Patent

active

052354075

ABSTRACT:
A guidance type placement apparatus for placing and mounting integrated circuit (IC) components or devices, especially fine pitch integrated circuit devices (FPD), in aligned combination with printed circuit boards. The apparatus includes an image acquisition/processing subsystem. The image acquisition subsystem is operative to generate images of at least one pair of diagonally opposed corners of the placement site and IC device from the same optical perspective. Images generated by the image acquisition subsystem provide feedback control to regulate the placement process to attain and verify lead-to-pad alignment.

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IBM Technical Disclosure Bulletin "Optical Inspection/Alignment of Multisided Component Connections" Sep. 1987, vol. 30 No. 4.

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