Patent ID: 9674937
Date: 2017-06-06
CPC Classifications: H05K

Claim:
1. A circuit board comprising: a core layer comprising a first surface and a second surface opposite to the first surface; a first build-up layer and a second build-up layer formed on the first surface and the second surface of the core layer, respectively, and comprising a conductive pattern and a conductive via; and an outer layer formed on a surface of the first build-up layer or a surface of the second build-up layer, wherein at least one build-up layer of the first build-up layer and the second build-up layer comprises a photosensitive insulating layer in which a cavity is disposed and a thermal dissipation unit is disposed in the cavity, wherein the outer layer has a pad formed thereon, the pad being connected with an electronic component, and wherein the pad is connected with the thermal dissipation unit through a heat dissipation via.