Patent ID: 9000554
Filing Date: 2015-04-07
Classification: H01L

Abstract:
1. A semiconductor device comprising: a substrate including an insulating layer; a semiconductor layer on the insulating layer and including a low-voltage region, a high-voltage region, and a connection region; a first isolation trench insulating and separating the low-voltage region, the high-voltage region, and the connection region from each other; a low-potential signal processing circuit in the low-voltage region, operating at a first potential, processing an inputted first signal, and outputting a second alternating current signal; a high-potential signal processing circuit in the high-voltage region, operating at a second potential higher than the first potential, processing the second alternating current signal, and outputting a third signal; and a capacitor on the connection region and transmitting the second alternating current signal from the low-potential signal processing circuit to the high-potential signal processing circuit, wherein the capacitor includes a low-potential electrode connected to the low-potential signal processing circuit, and a high-potential electrode connected to the high-potential signal processing circuit, the low-potential electrode includes a plurality of first wiring layers which are stacked, the high-potential electrode includes a plurality of second wiring layers which are stacked, the first wiring layers and the second wiring layers are capacitively coupled, and side wall surfaces of the first wiring layers and side wall surfaces of the second wiring layers are opposed to each other.