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Semiconductor device with multi-trench separation region and method for producing the same

Image Number 18 for United States Patent #7582946.

A semiconductor device is configured that a high-withstand voltage semiconductor device (101) and logic circuits (201 and 301) are integrated on a single chip and that a high-withstand voltage high-potential island (402) including the high-potential-side logic circuit (301) is separated using multiple partition walls enclosing therearound. The semiconductor device is provided with a multi-trench separation region (405) having a level shift wire region (404) that is used to connect the high-potential-side logic circuit to the high-potential-side electrode of the high-withstand voltage semiconductor device.

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