Patent ID: 9368570
Filing Date: 2016-06-14
CPC Classification: H01L

Claim Text:
1. An integrated circuit for a driving device, the integrate circuit comprising: a substrate comprising a high-voltage area and a low-voltage area; a plurality of first trenches, formed in the high-voltage area; a plurality of first isolations, formed in the plurality of first trenches of the high-voltage area; a plurality of second trenches, formed in the low-voltage area; and a plurality of second isolations, formed in the plurality of second trenches of the low-voltage area; wherein a depth difference exists between each of the plurality of first trenches and each of the plurality of second trenches; wherein each of the plurality of first isolations is a first height higher than a surface of the substrate, each of the plurality of second isolations is a second height higher than the surface of the substrate, and the first height and the second height are different.