| http://www.w3.org/ns/prov#value | - thin film transistor between the source and drain electrodes, and a second active layer spaced from the first active layer at a same layer as and including a same material as the first active layer; a first insulation layer on the buffer layer, the source and drain electrodes, the first and second active layers, and including sequentially stacked materials having different refractive indexes; a f
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