Display device

Abstract

A display device having high resolution includes: a first conductive layer, an active pattern, second to fourth conductive layers, and a pixel electrode sequentially formed on a substrate, with first to fourth insulating layers separately interposed therebetween, the first conductive layer including a lower pattern, the active pattern including a source region, a channel region, and a drain region, the second conductive layer including a gate electrode overlapping the channel region and a driving gate electrode connected to the gate electrode, the third conductive layer including a capacitor electrode overlapping the driving gate electrode, the fourth conductive layer including an additional capacitor electrode overlapping the capacitor electrode. The driving gate electrode and the capacitor electrode may form a storage capacitor, the pixel electrode and the additional capacitor electrode may form a first additional capacitor, and the capacitor electrode and the additional capacitor electrode may form a second additional capacitor.

What is claimed is: 
     
         1 . A display device comprising:
 a substrate;   a first conductive layer including a lower pattern disposed on the substrate;   a first insulating layer disposed on the first conductive layer;   an active pattern disposed on the first insulating layer and including a source region, a channel region, and a drain region;   a second conductive layer disposed on the active pattern and including a gate electrode overlapping the channel region and a driving gate electrode connected to the gate electrode;   a second insulating layer disposed on the second conductive layer;   a third conductive layer disposed on the second insulating layer and including a capacitor electrode overlapping the driving gate electrode;   a third insulating layer disposed on the third conductive layer;   a fourth conductive layer disposed on the third insulating layer and including an additional capacitor electrode overlapping the capacitor electrode;   a fourth insulating layer disposed on the fourth conductive layer; and   a pixel electrode layer including a pixel electrode disposed on the fourth insulating layer,   wherein the driving gate electrode and the capacitor electrode form a storage capacitor, the pixel electrode and the additional capacitor electrode form a first additional capacitor, and the capacitor electrode and the additional capacitor electrode form a second additional capacitor.