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Proceedings Paper

New digital tomosynthesis system to monitor the soldering states of a ball grid array
Author(s): Sung Taek Kang; Young-Ouk Kim; Hyungsuck Cho
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Paper Abstract

This paper represents a new method to monitor the soldering state of a ball grid array by newly designed digital tomosynthesis system. Firstly, a new digital tomosynthesis (DTS) system, called object-detector synchronous rotation (ODSR), is suggested and designed to acquire images for the soldering state of a ball grid array. Secondary, the shape distortion of DTS images generated by an image intensifier is modeled. And a new synthesis algorithm, which overcomes the limitations of the existing synthesis algorithms is suggested to improve the sharpness of the synthesized image. Also an artifact analysis of the DTS system is performed. Thirdly, the experiment to obtain the cross-sectional images of ball grid arrays is accomplished by the ODSR system.

Paper Details

Date Published: 17 December 1998
PDF: 12 pages
Proc. SPIE 3518, Sensors and Controls for Intelligent Machining, Agile Manufacturing, and Mechatronics, (17 December 1998); doi: 10.1117/12.332809
Show Author Affiliations
Sung Taek Kang, Korea Electronics Technology Institute (China)
Young-Ouk Kim, Korea Electronics Technology Institute (South Korea)
Hyungsuck Cho, Korea Advanced Institute of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 3518:
Sensors and Controls for Intelligent Machining, Agile Manufacturing, and Mechatronics
Patrick F. Muir; Patrick F. Muir; Peter E. Orban, Editor(s)

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