Patent ID: 11903145
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A semiconductor module, comprising:
a package substrate including,
a core portion,
a first upper insulating layer embedding an upper wire pattern on a top surface of the core portion,
upper fillers distributed in the first upper insulating layer,
an upper protection layer covering the first upper insulating layer, a material in the upper protection layer being a same material as in the first upper insulating layer,
a first lower insulating layer embedding a lower wire pattern on a bottom surface of the core portion,
lower fillers distributed in the first lower insulating layer, and
a lower protection layer covering the first lower insulating layer,
a material in the lower protection layer being a same material as in the first lower insulating layer, and
a thickness of the upper protection layer and a thickness of the lower protection layer ranging from 1 μm to 3 μm;

a semiconductor chip on the package substrate;
a mold layer on the package substrate, the mold layer covering the semiconductor chip, the mold layer being spaced apart from the first upper insulating layer and the upper fillers by the upper protection layer; and
outer coupling terminals below the package substrate and connected to a lower surface of the package substrate,
wherein
a degree of roughness of a top surface of the upper protection layer is greater than a degree of roughness of a top surface of the first upper insulating layer, and
a degree of roughness of a bottom surface of the lower protection layer is greater than a degree of roughness of a bottom surface of the first lower insulating layer.