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APPLICATION OF CAUSTIC FOCI TO MEASURE SMALL DIMENSIONAL CHANGES ACCOMPANYING WATER-UPTAKE BY POLYMER-COATINGS ON THE CHIP-ON-BOARD (COB)
被引：0
|作者：
XU, ZR
ASHBEE, KHG
机构：
[1] UNIV TENNESSEE,CTR MAT PROC,KNOXVILLE,TN 37996
[2] UNIV TENNESSEE,DEPT MAT SCI & ENGN,KNOXVILLE,TN 37996
关键词：
CAUSTIC FOCI;
MEASUREMENT OF SMALL DEFORMATION;
WATER UPTAKE;
POLYMER COATING;
ELECTRONIC PACKAGE;
D O I：
10.1080/00218469108030442
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
As deposited, the protective silicone coating applied to electronic packages, such as the chip-on-board (COB), has smoothly curved edges that can be sufficiently reflective to generate optical caustic foci. The geometry of caustic foci is extremely sensitive to the topography of the reflecting surface. We have exploited this fact to develop a new method for monitoring surface distortion during swelling (or shrinkage) associated with the presence of diffused water within the material of the sealant. © 1991, Taylor & Francis Group, LLC. All rights reserved.
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页码：135 / 161
页数：27
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