Patent ID: 7368751

Claim:
The electronic device having a thin film transistor, the transistor having a gate electrode and source and drain electrodes, a semiconductor layer being separated from the gate electrode by a gate insulator layer, and the gate electrode being arranged to control current flow through a channel region of the semiconductor layer between the source and drain electrodes, wherein the electronic device is manufactured according to a method comprising the steps of: (a) forming the semiconductor layer over a substrate; (b) forming a hydrogen-containing layer over the semiconductor layer; (c) irradiating the hydrogen-containing layer with an energy beam to hydrogenate at least part of the semiconductor layer, wherein the hydrogen diffuses from the hydrogen-containing layer into the semiconductor layer; and then (d) forming the gate electrode over/under the semiconductor layer, wherein the gate insulator layer comprises the hydrogen-containing layer, the semiconductor layer has been patterned to form a semiconductor island, the gate insulator layer comprising a first region A overlying the semiconductor island and a second region B disposed laterally to one side of the semiconductor island, and the first region has a hydrogen content lower than that of the second region.