发明授权
US07256495B2 Package substrate manufactured using electrolytic leadless plating process, and method for manufacturing the same 失效
使用电解无铅电镀工艺制造的封装衬底及其制造方法

Package substrate manufactured using electrolytic leadless plating process, and method for manufacturing the same
摘要:
A package substrate is manufactured by electrolytically plating Au in a semi-additive manner without using any plating lead line. Such a package substrate includes a base substrate with a plurality of through holes, a first copper plated layer on portions of the base substrate and inner surfaces of the through holes, a plated pattern layer on the first copper plated layer, wire bonding pads on the plated pattern layer at an upper surface of the base substrate, the wire bonding pads including Au and not connected to a remnant of a plating lead line, solder ball pads on the plated pattern layer at a lower surface of the base substrate, the solder ball pads including Au and not connected to a remnant of a plating lead line, and a solder resist covering the base substrate and the plated pattern layer.
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