Patent ID: 8748878
Filing Date: 2014-06-10
Classification: H01L

Abstract:
1. A thin film transistor comprising: a gate electrode; a channel layer whose main component is oxide semiconductor; a gate insulating film provided between the gate electrode and the channel layer; a sealing layer provided on the side opposite to the gate electrode, of the channel layer; a pair of electrodes formed over a portion of the sealing layer and over a portion of the gate electrode which are in contact with the channel layer and serve as a source and a drain; and a channel protection film formed on the sealing layer such that the sealing layer is formed between the channel layer and the channel protection film, wherein the sealing layer includes at least wherein the first insulating material is selected from the group consisting of Al wherein the first insulating layer and the second insulating layer are etched during a single photolithographic process, and wherein the channel protection film is formed on the sealing layer only in areas corresponding to the gate electrode.