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US07892412B2 Manufacturing process of embedded type flexible or rigid printed circuit board 有权
嵌入式柔性或刚性印刷电路板的制造工艺

Manufacturing process of embedded type flexible or rigid printed circuit board
摘要:
A manufacturing process of an embedded type flexible or rigid printed circuit board includes multiple steps. First, a layer of dry film is applied to a layer of copper foil. Then a circuit pattern is formed on the copper foil through photolithography processes. An etching stop layer is electroplated on the copper foil according to the circuit pattern. The etching stop layer is then electroplated with copper. The copper foil is softened by a high temperature process after removing the dry film. Then the layer of the copper foil is etched after coating with an organic layer and the organic layer is solidified.
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