Patent ID: 8772779

Claim:
A display substrate comprising: a driving element comprising a driving control electrode formed from a first conductive layer, a first active pattern formed on the driving control electrode and having, in a plan view, a substantially same shape as the driving control electrode, and a driving input electrode and a driving output electrode that are formed from a second conductive layer and formed on the driving control electrode; a switching element comprising a switching control electrode formed from the second conductive layer, and a switching input electrode and a switching output electrode that are formed from a third conductive layer and formed on the switching control electrode; a gate line formed from the second conductive layer and connected to the switching control electrode; a data line formed from the third conductive layer and connected to the driving input electrode; a driving voltage line formed from the third conductive layer and electrically connected to the driving input electrode; and an electroluminescent element electrically connected to the driving output electrode, wherein the third conductive layer physically contacts the first conductive layer at the driving control electrode.