Patent ID: 9252284
Filing Date: 2016-02-02
CPC Classification: H01L

Claim Text:
1. A display substrate, comprising: a substrate; a gate electrode disposed on the substrate; an active pattern comprising an oxide semiconductor, the active pattern comprising a first region, a second region, and a third region, the first region of the active pattern overlapping the gate electrode and having an electrical conductivity smaller than those of the second region and the third region; a first insulation layer pattern and a second insulation layer pattern disposed on the first region of the active pattern, the first insulation layer pattern and the second insulation layer pattern overlapping the gate electrode; and a third insulation layer covering the active pattern, the first insulation layer pattern, and the second insulation layer pattern, contacting the second region and the third region and being separated from the first region, and the third insulation layer comprising at least one of silicon nitride and silicon oxy-nitride, wherein either the first insulation layer pattern or the second insulation layer pattern comprises aluminum oxide, and wherein each of the first insulation layer pattern and the second insulation layer pattern has a width substantially the same as a width of the gate electrode.