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Semiconductor devices

  • US 6,518,594 B1
  • Filed: 11/16/1999
  • Issued: 02/11/2003
  • Est. Priority Date: 11/16/1998
  • Status: Expired due to Term
First Claim
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1. A semiconductor device having a pixel area wherein each pixel has an n-channel type thin film transistor, comprising:

  • a gate electrode comprising a first conductive layer formed over a gate insulating film and a second conductive layer formed on said first conductive layer wherein said second conductive layer extends beyond said first conductive layer so that an extended portion of said second conductive layer is formed on said gate insulating film;

    a semiconductor layer comprising a channel forming region, a first impurity region of one conductivity type formed in contact with said channel forming region and a second impurity region of said one conductivity type formed in contact with said first impurity region, wherein said first impurity region is partially overlapped with said extended portion of said second conductive layer.

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