Patent ID: 7525165
Filing Date: 2009-04-28
Classification: H01L

Abstract:
1. A light emitting device comprising: a pixel portion having an n-channel TFT and a light emitting element over a substrate, the n-channel TFT comprising: a protecting film in contact with the gate insulating layer and the second conductive film; a resin film provided over the protecting film wherein at least a part of the resin film is in contact with the protecting film; a coloring layer provided between the protecting film and the resin film; and a pixel electrode on and in contact with the resin film, wherein the first conductive film overlaps the channel forming region and the n-type impurity region (c) with the gate insulating layer interposed therebetween, wherein the second conductive film overlaps the channel forming region with the gate insulating layer and the first conductive film interposed therebetween, and the second conductive film has a thinner width as compared with the first conductive film, and wherein the first conductive film comprises one of tantalum nitride and titanium nitride, and the second conductive film comprises tungsten.