Improved method for forming magnetic layers in printed circuit boards

Improved method for forming magnetic layers in printed circuit boards

  • CN 1,515,012 A
  • Filed: 05/24/2002
  • Published: 07/21/2004
  • Est. Priority Date: 06/11/2001
  • Status: Active Application
First Claim
Patent Images

1. a shaping has the method for the printed circuit board (PCB) of integrated inductor core, comprising:

  • A) provide a kind of conductive structure, comprise the Copper Foil that is equipped with nickel dam on it;

    B) conductive structure is laminated on a kind of first surface of non conductive substrate, makes the first surface of nickel dam contact substrate;

    C) remove Copper Foil from conductive structure, thereby on the base material first surface, stay nickel dam;

    D) remove any oxide that on nickel dam, forms;

    AndE) implementation step (i) or step are (ii);

    (i) on nickel dam, apply photoresist;

    By image mode with photochemical dynamic rays to resist exposure;

    Make photoresist developing, thereby remove not imaging region, do not remove imaging region simultaneously;

    At the photoresist that is removed deposition NiFe layer on the part of the nickel dam below the imaging region not;

    Remove all the other photoresists;

    And randomly remove at least a portion nickel dam, thereby at base material first surface shaping integrated inductor core;

    (ii) on nickel dam, deposit the NiFe layer;

    On this NiFe layer, apply photoresist, by image mode with photochemical dynamic rays to resist exposure;

    Make photoresist developing, thereby remove not imaging region, stay imaging region simultaneously;

    Remove at the photoresist that the is removed NiFe layer segment below the imaging region not from nickel dam;

    Remove all the other photoresists;

    And randomly remove at least a portion nickel dam, thereby at base material first surface shaping integrated inductor core.

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