HEAT-RADIATING SUBSTRATE AND MANUFACTURING METHOD THEREOF

摘要

PURPOSE: A radiation substrate and a manufacturing method thereof are provided to release the heat generated from the heat generating element to the outside using alumina, which oxidizes a core metal layer, as a core insulating layer. CONSTITUTION: A radiation substrate(100a) includes a heat radiation part and a weak part to heat. The heat radiation part includes a core layer(110) and a circuit layer(120) which is formed in the first area(A) of the core layer. The weak part to heat includes a build-up layer(130) which is bonded in the second part(B) of the core layer through a bonding layer(140). The heat radiation part and the weak part to heat are thermally separated. An impregnation device(150) is impregnated in the bonding layer and is formed in the build-up layer. The core layer includes a core metal layer(111) and a core insulating layer(112). The core layer emits the heat generated from a heat generating device(160) to the outside.