Dual-stack, ball-limiting metallurgy and method of making same

The invention relates to a ball-limiting metallurgy (BLM) stack for an electrical device. The dual BLM stack resists tin migration toward the upper metallization of the device.

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Bibliographic Details
Main Authors Datta, Madhav, Emory, Dave, Joshi, Subhash, Menezes, Susanne, Suh, Doowon
Format Patent
LanguageEnglish
Published 27.03.2003
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Summary:The invention relates to a ball-limiting metallurgy (BLM) stack for an electrical device. The dual BLM stack resists tin migration toward the upper metallization of the device.