Patent ID: 7550831
Filing Date: 2009-06-23
Classification: H01L

Abstract:
1. An electronic device comprising: a substrate having a circuit portion used from 60 GHz to 80 GHz; a conductive layer provided directly on a face of the substrate that is opposite side of the circuit portion; and a substrate mounted portion where the face having the circuit portion of the substrate is mounted face down, wherein: the substrate is one of a GaAs substrate, a Si substrate, a SiC substrate, a sapphire substrate and a GaN substrate; the conductive layer is one of a NiCr layer of 4 nm to 70 nm thickness, a TaN layer of 10 nm to 200 nm thickness, an ITO layer of 10 nm to 160 nm thickness, in a case where the substrate is the GaAs substrate; the conductive layer is one of a NiCr layer of 3 nm to 65 nm thickness, a TaN layer of 10 nm to 180 nm thickness, an ITO layer of 5 nm to 140 nm thickness, in a case where the substrate is the Si substrate; the conductive layer is one of a NiCr layer of 3 nm to 63 nm thickness, a TaN layer of 7 nm to 160 nm thickness, an ITO layer of 5 nm to 140 nm thickness, in a case where the substrate is the SiC substrate; the conductive layer is one of a NiCr layer of 3 nm to 63 nm thickness, a TaN layer of 7 nm to 160 nm thickness, an ITO layer of 5 nm to 140 nm thickness, in a case where the substrate is the sapphire substrate; and the conductive layer is one of a NiCr layer of 3 nm to 68 nm thickness, a TaN layer of 10 nm to 180 nm thickness, an ITO layer of 5 nm to 140 nm thickness, in a case where the substrate is the GaN substrate.