Patent ID: 9093328
Filing Date: 2015-07-28
Classification: H01L

Abstract:
1. A semiconductor device comprising: a first transistor over a substrate; and a second transistor over the substrate, the first transistor and the second transistor each comprising: wherein the first electrode layer of the second transistor has an edge portion overlapping with the oxide semiconductor layer of the second transistor, wherein the oxide semiconductor layer of the second transistor has an edge portion overlapping with the first electrode layer of the second transistor, wherein the fourth electrode layer of the second transistor is in contact with the second electrode layer of the second transistor in a region in which the first electrode layer of the second transistor overlaps the second electrode layer of the second transistor, wherein a first region including a surface portion of the oxide semiconductor layer comprises a crystalline region comprising crystals, and wherein c-axes of the crystals are oriented substantially in a direction perpendicular to the surface portion of the oxide semiconductor layer.