Patent ID: 7816768
Filing Date: 2010-10-19
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a substrate having a ground plane and a power-supply plane arranged to face each other with a dielectric layer interposed between the ground plane and the power-supply plane, an edge of the ground plane being offset from an edge of the power-supply plane in a direction orthogonal to a thickness direction, wherein a high dielectric loss tangent layer having a higher tan δ than a periphery is provided in the dielectric layer between the edge of the ground plane and the edge of the power-supply plane in the direction orthogonal to the thickness direction, and an edge of the high dielectric loss tangent layer located outside one of the ground plane and the power-supply plane in the direction orthogonal to the thickness direction is positioned between the edge of the ground plane and the edge of the power-supply plane in the direction orthogonal to the thickness direction.