Electro-optical device and electronic apparatus
An electro-optical device of the present invention includes pixel electrodes, TFTs electrically connected to the pixel electrodes, and scanning lines and data lines connected to the TFTs on a TFT array substrate. Each scanning line has a broad width portion as a gate electrode in a portion facing a channel area of the TFT and the narrow width portion. As a result, an electro-optical device capable of easily adjusting an arrangement of the gate electrodes and the scanning lines and at the same time precisely driving the TFTs is provided.
1. An electro-optical device, comprising:
a thin-film transistor having a channel area that extends in a direction and that intersects a predetermined direction that intersects the direction;
a pixel electrode formed correspondingly to the thin-film transistor;
a data line extending in the direction in which the channel area extends, the data line having a broad-width portion that overlaps the channel area in plan view;
a scanning line extending in the predetermined direction and intersecting the data line and the channel area of the thin-film transistor, the scanning line having a broad-width portion in a portion overlapping the channel area of the thin-film transistor in plan view and a narrow width portion in another portion;
a storage capacitor including a pixel-potential capacitor electrode, a fixed-potential capacitor electrode, and a dielectric film interposed between the pixel-potential capacitor electrode and the fixed-potential capacitor electrode;
a capacitive line having a portion that serves as the fixed-potential capacitor electrode of the storage capacitor, the capacitive line having a portion extending along the scanning line and a portion extending along the data line, the portion extending along the data line having a width that is equal to or broader than a width of the data line; and
a contact hole electrically connecting the data line and the thin film transistor, the contact hole being positioned at a portion of the broad-width portion of the data line that extends beyond the channel area in a direction extending from the channel area toward the contact hole.
2. An electro-optical device, comprising:
a thin-film transistor having a channel area that extends in a direction and that intersects a predetermined direction that intersects the direction;
a pixel electrode formed correspondingly to the thin-film transistor;
a data line extending in the direction in which the channel area extends, the data line having a broad portion that overlaps the thin-film transistor and a non-broad portion that does not overlap the thin-film transistor, the broad portion being wider than the non-broad portion;
a scanning line extending in the predetermined direction and intersecting the data line and the channel area of the thin-film transistor, the scanning line having a broad-width portion in a portion facing the channel area of the thin-film transistor and a narrow width portion in another portion;
a storage capacitor including a pixel-potential capacitor electrode, a fixed-potential capacitor electrode, and a dielectric film interposed between the pixel-potential capacitor electrode and the fixed potential capacitor electrode; and
a capacitive line having a portion that serves as the fixed-potential capacitor electrode of the storage capacitor, the capacitive line having a portion extending along the scanning line and a portion extending along the data line, the portion extending along the data line having a width that is narrower than the broad portion of the data line and that is wider than the non-broad portion of the data line.
3. The electro-optical device according to claim 2 , further comprising a contact hole that electrically connects the thin-film transistor and the data line, the data line being continuously broad from the broad portion that overlaps the thin-film transistor a portion where the contact hole is located.