Active matrix liquid crystal display device with overlapping conductive film and pixel electrode
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United States of America Patent
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Sep 10, 2013
Grant Date -
Jan 3, 2013
app pub date -
Aug 16, 2012
filing date -
Mar 28, 1997
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Abstract
A first insulating thin film having a large dielectric constant such as a silicon nitride film is formed so as to cover a source line and a metal wiring that is in the same layer as the source line. A second insulating film that is high in flatness is formed on the first insulating film. An opening is formed in the second insulating film by etching the second insulating film, to selectively expose the first insulating film. A conductive film to serve as a light-interruptive film is formed on the second insulating film and in the opening, whereby an auxiliary capacitor of the pixel is formed between the conductive film and the metal wiring with the first insulating film serving as a dielectric.
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