Patent ID: 9117727
Filing Date: 2015-08-25
Classification: H01L

Abstract:
1. A transistor comprising: an active layer including an oxide semiconductor; a source electrode and a drain electrode contacting two ends of the active layer, respectively; a gate corresponding to the active layer; and a gate insulating layer between the active layer and the gate, wherein the active layer includes a first layer and a second layer that are sequentially stacked from a side of the gate, and the second layer includes a material having a smaller energy band gap than the first layer, and a photosensitivity of the second layer being higher than a photosensitivity of the first layer, and the second layer includes a first material layer and a second material layer that are sequentially stacked on a surface of the first layer, the second material layer is farther from the gate than the first material layer, and an energy band gap of the second material layer is smaller than an energy band gap of the first layer.