Patent ID: 8310611
Filing Date: 2012-11-13
Classification: G02F,H01L

Abstract:
1. A display device comprising: a transparent substrate; and a thin-film transistor formed on the transparent substrate; wherein the thin-film transistor has a gate electrode, a gate insulating layer formed above the gate electrode, a semiconductor film including one of microcrystalline silicon and polycrystalline silicon being formed on the gate insulating layer, two Ohmic contact layers, a source electrode, and a drain electrode; wherein the semiconductor film includes a channel region and two impurity regions formed of regions which are doped with impurities on both sides of the channel region; wherein each of the channel region and the two Impurity regions has a surface in contact with the gate insulating layer and an upper surface which is opposite to the surface in contact with the gate insulating layer; wherein each of the two impurity regions has one side surface in contact with the channel region and another side surface which is opposite to the one side surface in contact with the channel region; wherein an insulating film is formed on the upper surface of the channel region; wherein the insulating film has a surface in contact with the channel region, an upper surface which is opposite to the surface in contact with the channel region, and side surfaces; wherein the two Ohmic contact layers are formed of layers different from a layer where the semiconductor film is formed; wherein each of the two Ohmic contact layers directly covers the upper surface and the another side surface of the impurity regions and is formed in contact with the upper surface and one of the side surfaces of the insulating film; and wherein the source electrode and the drain electrode are connected to the impurity regions through the Ohmic contact layers.