Toppan Printing Co., Ltd.

Toppan Inc.

Chihiro Imamura

Manabu Ito

Noriaki Ikeda

Hiroaki Koyama

Yukari Miyairi

Since the gate electrode () and the capacitor electrode () are made into a double layer structure, the first layers () in contact with the substrate () are made of ITO, and the second layers () in contact with the gate insulating layer () are made of an metallic oxide layer, it becomes possible to form the gate electrode () and the capacitor electrode () having high optical transparency and high conductivity. Therefore, it becomes possible to improve the optical transparency of a thin film transistor and to improve the display performance of an image displaying apparatus for which the thin film transistor is used by using the above-described gate electrode () and the above-described capacitor electrode ().

Thin film transistor and image displaying apparatus

A thin film transistor includes, on an insulating substrate, at least: a gate electrode; a gate insulating layer; a source electrode; a drain electrode; a metal oxide layer including a semiconductor region and an insulating region, each of the semiconductor region and the insulating region being composed of a same metal oxide material; and an insulating protective layer. The semiconductor region includes a region between the source electrode and the drain electrode, and is overlaid on a part of each of them. The semiconductor region is formed between the gate insulating layer and the insulating protective layer to abut on at least one of them. The electric conductivity of the semiconductor region is higher than that of the insulating region.

Thin film transistor, method of manufacturing the same, and image display device equipped with thin film transistor

According to the first aspect of the present invention, a drain electrode and a pixel electrode are electrically connected to each other on a protective film formed on a semiconductor active layer, and thereby it is possible to easily connect the drain electrode and the pixel electrode to each other and to improve a yield.

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Tokyo, Japan

Chihiro Imamura