DISPLAY DEVICE

摘要

According to one embodiment, a display device includes a semiconductor including a first channel region, a second channel region, a source region, a drain region, a first region located between the source region and the first channel region, a second region formed between the first channel region and the second channel region, and a third region located between the drain region and the second channel region, wherein the second region has a length of 5 μm or more, which is greater than a length of each of the first region and the third region.

主权项

1. A display device comprising:
an insulative substrate; a semiconductor layer located above the insulative substrate and formed of polysilicon, the semiconductor layer including a first channel region, a second channel region, a source region, a drain region, a first region located between the source region and the first channel region and having an impurity concentration which is lower than an impurity concentration of the source region and is higher than an impurity concentration of the first channel region, a second region formed between the first channel region and the second channel region and having an impurity concentration which is equal to the impurity concentration of the first region, and a third region located between the drain region and the second channel region and having an impurity concentration which is lower than an impurity concentration of the drain region and is higher than an impurity concentration of the second channel region; an insulation film covering the semiconductor layer; a first gate electrode formed on the insulation film and located above the first channel region, a second gate electrode which is electrically connected to the first gate electrode, is formed on the insulation film, and is located above the second channel region; a source electrode put in contact with the source region; a drain electrode put in contact with the drain region; a source line electrically connected to the source electrode and supplied with a video signal; and a pixel electrode which is electrically connected to the drain electrode and in which a pixel potential corresponding to the video signal is written, wherein the second region has a length of 5 μm or more, which is greater than a length of each of the first region and the third region.