METHOD OF INTEGRATING HIGH VOLTAGE DEVICES
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United States of America Patent
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app pub date -
Jun 30, 2012
filing date -
Sep 20, 2011
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Abstract
The present invention is directed to a method for forming multiple active components, such as bipolar transistors, MOSFETs, diodes, etc., on a semiconductor substrate so that active components with higher operation voltage may be formed on a common substrate with a lower operation voltage device and incorporating the existing proven process flow of making the lower operation voltage active components. The present invention is further directed to a method for forming a device of increasing operation voltage over an existing device of same functionality by adding a few steps in the early manufacturing process of the existing device therefore without drastically affecting the device performance.
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