Patent ID: 9237643
Filing Date: 2016-01-12
CPC Classification: H05K,Y10T

Claim Text:
1. A circuit board structure, comprising: a core layer with surface material thereof being dielectric material, having a first surface and a corresponding second surface; a fine circuit pattern, embedded in the first surface of the core layer; a patterned conductive layer, disposed on the second surface of the core layer and protrudes from the second surface of the core layer; at least a conductive through via penetrating the core layer and connecting the fine circuit pattern to the patterned conductive layer, wherein the conductive through via has a shape of hollow cylinder or solid cylinder; and a first solder mask, disposed on the first surface of the dielectric layer and the fine circuit pattern, wherein the fine circuit pattern has at least a first joint pad, and the first solder mask exposes the first joint pad.