In a conventional MOS semiconductor device of a thin film SOI structure, excessive carriers accumulated in the channel region cause some problems, such as a decreased drain breakdown voltage and formation of kink in the current-voltage relationship, resulting in malfunction. Accordingly, drainage of...http://www.google.de/patents/US6066860?utm_source=gb-gplus-sharePatent US6066860 - Substrate for electro-optical apparatus, electro-optical apparatus, method for driving electro-optical apparatus, electronic device and projection display device