Patent ID: 8492764

Claim:
A light-emitting device comprising: a pixel portion over a substrate, and comprising: a first thin film transistor comprising: a first gate electrode layer over the substrate; a first gate insulating layer over the first gate electrode layer; a first source electrode layer and a first drain electrode layer over the first gate insulating layer; and a first oxide semiconductor layer over the first gate insulating layer, and overlapping with the first source electrode layer and the first drain electrode layer; a first oxide insulating layer which is in contact with the first oxide semiconductor layer; a connection electrode layer over the first oxide insulating layer, and electrically connected to the first drain electrode layer; a color filter layer over the first oxide insulating layer; a first electrode over the color filter layer, and electrically connected to the connection electrode layer; a light-emitting layer over the first electrode; and a second electrode over the light-emitting layer; a driver circuit over the substrate, and comprising: a second thin film transistor comprising: a second gate electrode layer over the substrate; a second gate insulating layer over the second gate electrode layer; a second oxide semiconductor layer over the second gate insulating layer; a second oxide insulating layer over the second oxide semiconductor layer; a second source electrode layer and a second drain electrode layer on and in contact with the second oxide semiconductor layer; and an insulating layer over the second oxide insulating layer, the second source electrode layer and the second drain electrode layer and in contact with the second oxide semiconductor layer, wherein the second oxide insulating layer includes a first region and a second region, wherein the first region is in contact with the second oxide semiconductor layer so as to overlap with the second gate electrode layer, wherein the second region is in contact with the second oxide semiconductor layer so as to cover an end portion of the second oxide semiconductor layer, wherein the second region is sandwiched between the second oxide semiconductor layer and one of the second source electrode layer and the second drain electrode layer, and wherein the first gate electrode layer, the first gate insulating layer, the first oxide semiconductor layer, the first source electrode layer, the first drain electrode layer, the first oxide insulating layer, and the first electrode have a light-transmitting property.