Patent ID: 9198294
Filing Date: 2015-11-24
Classification: H01L,H05K

Abstract:
1. An electronic device for radiofrequency or power applications, comprising: a support substrate including a base layer having a thermal conductivity of at least 30 W/mK and a superficial layer having a thickness of at least 5 μm, the superficial layer having an electrical resistivity of at least 3000 Ohm·cm and thermal conductivity of at least 30 W/mK; a semiconductor layer supporting electronic components on the support substrate; a bonding layer between the support substrate and the semiconductor layer supporting the electronic components, the bonding layer comprising at least one of a silicon oxide layer having a thickness of less than 50 nm, a layer of AlN, a layer of alumina, and a layer of high-resistivity polycrystalline silicon.