公开(公告)号：US20170013710A1

公开(公告)日：2017-01-12

申请号：US14849614

申请日：2015-09-10

Applicant: Subtron Technology Co., Ltd.

Inventor： Chin-Sheng Wang ,  Ching-Sheng Chen ,  Mei-Chin Chang ,  Ching-Ta Chen

IPC: H05K1/09 ,  H05K3/18 ,  H05K1/11

CPC classification number: H05K1/09 ,  H05K1/111 ,  H05K3/181 ,  H05K3/188 ,  H05K3/244 ,  H05K2201/0338 ,  H05K2201/0344 ,  H05K2201/09472 ,  H05K2201/099 ,  H05K2203/072

Abstract: A circuit board includes a substrate, a patterned copper layer, a phosphorous-containing electroless plating palladium layer, an electroless plating palladium layer and an immersion plating gold layer. The patterned copper layer is disposed on the substrate. The phosphorous-containing electroless plating palladium layer is disposed on the patterned copper layer, wherein in the phosphorous-containing electroless plating palladium layer, a weight percentage of phosphorous is in a range from 4% to 6%, and a weight percentage of palladium is in a range from 94% to 96%. The electroless plating palladium layer is disposed on the phosphorous-containing electroless plating palladium layer, wherein in the electroless plating palladium layer, a weight percentage of palladium is 99% or more. The immersion plating gold layer is disposed on the electroless plating palladium layer.

Abstract translation: 电路板包括基板，图案化铜层，含磷化学镀钯层，无电镀钯层和浸镀金层。 图案化铜层设置在基板上。 含磷化学镀钯层设置在图案化的铜层上，其中，在含磷化学镀钯层中，磷的重量百分比为4〜6％，钯的重量百分比为 在94％至96％的范围内。 无电镀钯层配置在含磷化学镀钯层上，其中，在化学镀钯层中，钯的重量百分比为99％以上。 浸镀金层设置在化学镀钯层上。