Automated visual inspection system for IC bonding wires using morphological processing

Hiroyuki Tsukahara; Masato Nakashima; Takehisa Sugawara

doi:10.1117/12.25306

1 February 1991 Automated visual inspection system for IC bonding wires using morphological processing

Hiroyuki Tsukahara, Masato Nakashima, Takehisa Sugawara

Proceedings Volume 1384, High-Speed Inspection Architectures, Barcoding, and Character Recognition; (1991) https://doi.org/10.1117/12.25306
Event: Advances in Intelligent Robotics Systems, 1990, Boston, MA, United States

Abstract

This paper discusses an automated visual inspection system for IC bonding wires that uses high-contrast image capture and an accurate bonding-ball measurement algorithm. On IC assembly lines visual inspection is vital to maintaining IC reliability. Wire bonding requires the automated evaluation of bonding quality to maintain productivity. Both bonding balls and wires must be inspected to evaluate bonding quality. We developed a bonding-ball measurement algorithm based on subpixel and morphological techniques and a wire inspection algorithm based on border following. The automated inspection system measures ball diameters to an accuracy within jim which corresponds to one-half pixel taking 0. 2 seconds to inspect a wire and ball. Paired with a wire bonder the inspection system configures a fully automatic bonding system.

Citation Download Citation

Hiroyuki Tsukahara, Masato Nakashima, and Takehisa Sugawara "Automated visual inspection system for IC bonding wires using morphological processing", Proc. SPIE 1384, High-Speed Inspection Architectures, Barcoding, and Character Recognition, (1 February 1991); https://doi.org/10.1117/12.25306

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available