Semiconductor device of display driver circuit for display apparatus, has N-type guard-ring region which is positioned between well regions to be separated by predetermined distance from well regions

摘要

The device (100) has a P-type semiconductor substrate (10) that includes primary conductivity type. The well regions (103,104) include secondary conductivity type and predetermined depth in the P-type semiconductor substrate. An N-type guard-ring region (110) is provided with secondary conductivity type and predetermined depth, and positioned between well regions to be separated by predetermined distance from well regions. The guard-ring region is connected to ground voltage. An independent claim is included for method for fabricating semiconductor device.