Patent ID: 8912541
Filing Date: 2014-12-16
Classification: H01L

Abstract:
1. A semiconductor device comprising: a pixel portion over a substrate, the pixel portion including a first transistor; and a driver circuit portion over the substrate, the driver circuit portion including a second transistor, wherein the first transistor includes: wherein the second transistor includes: wherein each of the first gate electrode layer, the 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 pixel electrode layer includes light-transmitting properties, wherein a material of the second source electrode layer and the second drain electrode layer is different from a material of the first source electrode layer and the first drain electrode layer, and wherein the material of the second source electrode layer and the second drain electrode layer is a conductive material having a lower resistance than the material of the first source electrode layer and the first drain electrode layer.