| 摘要 |
This invention discloses a method for electroplating nickel/gold on electrically connecting pads on a substrate for chip package and structure thereof. The method comprises: forming a conductive film on a substrate circuit-patterned and defined with a circuit layer; forming on the substrate a resist with an opening for exposing a portion of the conductive film in an electrically connecting pad area intended for the circuit layer; removing a portion of the conductive film not covered with the resist; forming another resist on the substrate to cover a portion of the conductive film residually exposing from the resist; electroplating nickel/gold on at least one electrically connecting pad on the substrate such that the electrically connecting pad is electroplated with a nickel/gold layer; removing the resists and the conductive film thereunder; and forming a solder mask on the substrate, wherein the electrically connecting pad electroplated with the nickel/gold layer is exposed from the solder mask. The structure comprises a substrate circuit-patterned and defined with a circuit layer, wherein the circuit layer is provided with at least one electrically connecting pad exposed from a resist, the exposed surface of the electrically connecting pad is electroplated with a nickel/gold layer, and the substrate is spared with an electroplating wire for electroplating nickel/gold on the electrically connecting pad.
|
