Patent ID: 8563978

Claim:
A display device comprising: a substrate; a plurality of pixels on the substrate; a first conductive film pattern comprising a gate electrode and a first capacitor electrode on the substrate; a gate insulating layer pattern on the first conductive film pattern; a polycrystalline silicon film pattern comprising an active layer and a second capacitor electrode on the gate insulating layer pattern; an interlayer insulating layer on the polycrystalline silicon film pattern; a plurality of first contact holes through the gate insulating layer pattern and the interlayer insulating layer for each of the pixels to expose a portion of the first conductive film pattern; a plurality of second contact holes through the interlayer insulating layer to expose a portion of the polycrystalline silicon film pattern; and a second conductive film pattern comprising a source electrode, a drain electrode, and a pixel electrode on the interlayer insulating layer, wherein the gate insulating layer pattern, except for the plurality of first contact holes, has substantially a same pattern as the first conductive film pattern.