Recent advancements of moiré and microscopic moiré interferometry for thermal deformation analyses of microelectronics devices

1998 ◽  
Vol 38 (4) ◽  
pp. 278-288 ◽  
Author(s):  
B. Han
2002 ◽  
Vol 5 (7) ◽  
pp. 654-659
Author(s):  
Yasuyuki MORITA ◽  
Kazuo ARAKAWA ◽  
Mitsugu TODO ◽  
Masayuki KANETO

2000 ◽  
Vol 2000.53 (0) ◽  
pp. 187-188
Author(s):  
Kazuo ARAKAWA ◽  
Mitsugu TODO ◽  
Shinji YAMADA ◽  
Kiyoshi TAKAHASHI

1998 ◽  
Vol 120 (2) ◽  
pp. 160-165 ◽  
Author(s):  
J. Zhu ◽  
D. Zou ◽  
S. Liu

Thermally-induced failure is a major reliability issue for electronic packaging. Due to the highly nonlinear behaviors and thermal mismatch of packaging materials, an electronic package exhibits uneven thermal deformation in the whole temperature range during thermal cycling. This behavior will affect the buildup of thermal strain/stress within the package, which may affect the reliability of the package. Therefore, a real-time method is needed to monitor the thermal deformation of packages during the thermal cycling. In this study, a real-time moire´ interferometry technique coupled with a thermal vacuum chamber is used to monitor the thermal deformation of a plastic package. A grating is transferred onto the cross section of the sample at room temperature. The fringe patterns are recorded by a CCD camera system and are compared with the displacement contours obtained by nonlinear finite element simulation. High temperature moire´ results up to 200°C are reported here. The comparison between the moire´ fringe patterns and finite element results shows a good agreement. The results also show that the real-time moire´ interferometry technique is an effective way to monitor the thermal deformation of electronic packaging and is a powerful validation method for finite element analysis.


2005 ◽  
Vol 127 (2) ◽  
pp. 86-90 ◽  
Author(s):  
Woon-Seong Kwon ◽  
Myung-Jin Yim ◽  
Kyung-Wook Paik ◽  
Suk-Jin Ham ◽  
Soon-Bok Lee

One of the most important issues whether anisotropic conductive film (ACF) interconnection technology is suitable to be used for flip chip on organic board applications is thermal cycling reliability. In this study, thermally induced deformations and warpages of ACF flip chip assemblies as a function of distance from neutral point (DNP) and ACF materials properties were investigated using in situ high sensitivity moire´ interferometry. For a nondestructive failure analysis, scanning acoustic microscopy investigation was performed for tested assemblies. To elucidate the effects of ACF material properties and DNP on the thermal cycling reliability of ACF assembly, Weibull analysis for the lifetime estimation of ACF joint was performed, and compared with thermal deformations of ACF flip chip assembly investigated by moire´ interferometry. Results indicate that the properties of ACF have a significant role in the thermal deformation and reliability performance during thermal cycling testing. Therefore, optimized ACF properties can enhance ACF package reliability during thermal cycling regime.


2000 ◽  
Vol 2000 (0) ◽  
pp. 537-538
Author(s):  
Kazuo ARAKAWA ◽  
Mitsugu TODO ◽  
Shinji YAMADA ◽  
Yashuyuki MORITA ◽  
Kiyoshi TAKAHASHI

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