Patent ID: 8389869
Filing Date: 2013-03-05
Classification: H01L,H05K,Y02P

Abstract:
1. A circuit board, comprising: a substrate dielectric layer; a conductive pattern, disposed on the substrate dielectric layer, the conductive pattern comprising: a first pad, wherein the first pad is a solid circular pad and the first pad has only one first tail trace physically in direct contact with an edge of the first pad and a first signal trace physically in direct contact with another edge of the first pad, and a first angle is formed between a center line of the first signal trace and a center line of the first tail trace, wherein the first angle is greater than or equivalent to 135 degrees and smaller than 180 degrees; and a solder mask layer, disposed on the substrate dielectric layer and covering a portion of the conductive pattern, wherein the solder mask layer comprises a first opening exposing the first pad entirely.