Patent ID: 7940344

Claim:
A display substrate comprising: a switching element comprising: a polycrystalline silicon layer having a channel portion and a doped portion; a gate electrode that is formed on the channel portion, the gate electrode including a first lower layer and a first upper layer, the first lower layer of the gate electrode comprising a transparent conductive material; and a source electrode and a drain electrode, the source and drain electrodes making contact with the doped portion; a storage capacitor comprising: a first storage electrode formed from substantially the same layer as the polycrystalline silicon layer; and a second storage electrode overlapped with the first storage electrode and including a second lower layer and a second upper layer, wherein the second lower layer is formed from substantially the same layer as the first lower layer of the gate electrode, and the second upper layer is formed from substantially the same layer as the first upper layer of the gate electrode, the second upper layer formed on a portion of the second lower layer such that at least a portion of an upper surface of the second lower layer is exposed; and a pixel electrode electrically connected to the switching element.