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US07213329B2 Method of forming a solder ball on a board and the board 失效
在板和板上形成焊球的方法

Method of forming a solder ball on a board and the board
摘要:
In the method, a conductive pad of the board is etched to a depth that is greater than 50% and less than 100% of a thickness of the conductive pad. Subsequently, a solder ball may be formed on the etched conductive pad. For example, the conductive pad may be copper.
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