Display device comprising pixel

摘要

To provide a liquid crystal display device having high quality display by obtaining a high aperture ratio while securing a sufficient storage capacitor (Cs), and at the same time, by dispersing a load (a pixel writing-in electric current) of a capacitor wiring in a timely manner to effectively reduce the load. A scanning line is formed on a different layer from a gate electrode and the capacitor wiring is arranged so as to be parallel with a signal line. Each pixel is connected to the individually independent capacitor wiring via a dielectric. Therefore, variations in the electric potential of the capacitor wiring caused by a writing-in electric current of a neighboring pixel can be avoided, whereby obtaining satisfactory display images.

主权项

1. A display device comprising a pixel portion, the pixel portion comprising:
a first conductive film over a substrate; a first insulating film over the first conductive film; a semiconductor layer including a channel forming region over the first insulating film; a gate insulating film over the semiconductor layer; a gate electrode over the gate insulating film; a second insulating film over the gate electrode; an electrode over the second insulating film, wherein the electrode is electrically connected to the semiconductor layer; a second conductive film over the electrode; a third insulating film over the electrode; and a pixel electrode over the third insulating film.