Patent ID: 7781828
Filing Date: 2010-08-24
Classification: H01L

Abstract:
1. An integrated semiconductor chip having a substrate, the semiconductor chip comprising: at least one power semiconductor circuit region on the substrate; at least one further temperature-sensitive semiconductor circuit region on the substrate laterally adjacent to the power semiconductor circuit region; wherein interspaces are maintained between the circuit regions; and at least one thermally insulating trench provided in each interspace between the power semiconductor circuit region and the temperature-sensitive semiconductor circuit region; wherein the at least one thermally insulating trench extends into the depth of the semiconductor chip and into the substrate in the longitudinal direction of the chip at least over a lateral side of the at least one power semiconductor circuit region and/or the temperature-sensitive semiconductor circuit region and is either unfilled or filled with a thermally insulating filling material, and only the sidewalls of the thermally insulating trench are lined with insulating oxide.