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A polarizing plate, which is an important part of a liquid crystal display panel (LCD), is made by sandwiching an organic polarizer between protecting films. An organic polarizer is both a hygroscopic and orthotropic material. The hygroscopic swelling and drying shrinkage of the organic polarizer can cause the polarizing plate to crack and the liquid crystal display panel to warp. The diffusion coefficient...
The reliability of a stacked ball grid array (stacked BGA) package during the solder reflow process was examined using the finite element method (FEM). The stress intensity factors (SIFs) at an interfacial crack tip in the stacked BGA package were analyzed. Vapor pressure on the surfaces of an initial crack and thermal stress were considered. The vapor pressure during the solder reflow was estimated...
Anisotropic conductive adhesive films (ACFs) have been used for electronic assemblies such as the connection between a liquid crystal display panel and a flexible printed circuit board. ACF interconnection is expected to be a key technology for flip chip packaging, system-in-packaging, and chip size packaging. This paper presents a methodology for quantitative evaluation of the delamination in a flip...
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