Patent ID: 8575611
Filing Date: 2013-11-05
Classification: H01L

Abstract:
1. A light-emitting display device comprising: an array of a plurality of light-emitting pixels; a plurality of data lines; and a power line for supplying current to the light-emitting pixels, which are arranged on a substrate, wherein each of the light-emitting pixels includes a first thin film transistor, a second thin film transistor, and a light-emitting element, each of the first thin film transistor and the second thin film transistor includes: a gate electrode provided on the substrate; a gate insulating film provided on the gate electrode; a semiconductor layer provided on the gate insulating film corresponding to the gate electrode, and having a source region, a channel region, and a drain region; a doped semiconductor layer provided to cover upper surfaces of the source region and the drain region of the semiconductor layer; and source/drain electrodes provided on the doped semiconductor layer, a thickness of the source region and the drain region of the semiconductor layer in the first thin film transistor is greater than a thickness of the source region and the drain region of the semiconductor layer in the second thin film transistor, the doped semiconductor layer covers side surfaces of channel-lengthwise ends of the semiconductor layer, data voltage is applied to the gate electrode of the second thin film transistor from a corresponding one of the data lines, and current according to the applied voltage is supplied to the light-emitting element from the power line through the second thin film transistor.