Patent ID: 7906828
Filing Date: 2011-03-15
Classification: H01L,H03K

Abstract:
1. A high-voltage integrated circuit device comprising: a low-voltage circuit region having a plurality of semiconductor devices, which operate with respect to a ground voltage; a high-voltage circuit region having a plurality of semiconductor devices, which operate with respect to a voltage that varies from the ground voltage to a high voltage; a junction termination and a first isolation region electrically isolating the low-voltage circuit region from the high-voltage circuit region; a high-voltage resistant diode formed between the low-voltage circuit region and the high-voltage circuit region; a second isolation region surrounding the high-voltage resistant diode and electrically isolating the high-voltage resistant diode from the low-voltage circuit region and the high-voltage circuit region; a high-voltage metal oxide semiconductor transistor formed between the low-voltage circuit region and the high-voltage circuit region; and a third isolation region surrounding the high-voltage metal oxide semiconductor transistor to isolate the high-voltage metal oxide semiconductor transistor from the low-voltage circuit region and the high-voltage circuit region and having a portion overlapping the high-voltage metal oxide semiconductor transistor.