Patent ID: 7880380
Filing Date: 2011-02-01
Classification: G09G,H01L

Abstract:
1. A display device comprising: a gate electrode provided over a substrate; a gate insulating layer provided over the gate electrode; a first semiconductor region provided over the gate insulating layer and having one conductivity; a second semiconductor region provided over the gate insulating layer and having the one conductivity; a channel region provided over the gate insulating layer and between the first semiconductor region and the second semiconductor region and comprising an amorphous semiconductor; a connecting wiring connected with one of the first semiconductor region and the second semiconductor region; an auxiliary wiring provided over the gate insulating layer and in a same layer as the connecting wiring; a first insulating layer provided over the auxiliary wiring, the first semiconductor region, the second semiconductor region and the connecting wiring; a pixel electrode provided over the first insulating layer and connected with the connecting wiring; a second insulating layer provided over the first insulating layer; a first opening portion provided over the pixel electrode and in the second insulating layer; a second opening portion provided over the auxiliary wiring and in the first insulating layer and the second insulating layer; an electroluminescent layer provided in contact with the pixel electrode via the first opening portion with the second insulating layer provided over an end portion of the pixel electrode; and a counter electrode provided over the electroluminescent layer, wherein the auxiliary wiring is connected with the counter electrode via the second opening portion, and wherein the counter electrode extends into the second opening portion to provide the counter electrode over the auxiliary wiring.