发明授权
US07199475B2 Semiconductor copper bond pad surface protection 失效
半导体铜焊垫表面保护

Semiconductor copper bond pad surface protection
摘要:
Electronic packages with uninsulated portions of copper circuits protected with coating layers having thicknesses that are suitable for soldering without fluxing and are sufficiently frangible when being joined to another metal surface to obtain metal-to-metal contact between the surfaces.
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