Patent ID: 8253909

Claim:
An electro-optical device substrate comprising: a substrate; a data line extending along a first direction on the substrate; a pixel electrode of which a voltage is set according to a data signal transmitted by the data line; a pixel corresponding to the pixel electrode; a transistor corresponding to the pixel electrode, the transistor including a semiconductor layer that extends along the first direction and overlaps with the data line; a light-shielding film defining a part of an opening region of the pixel, the light-shielding film overlapping at least a part of the semiconductor layer and extending along a second direction; a hold capacitor holding a potential of the pixel electrode, the hold capacitor disposed in a non-opening region in which the light-shielding film is formed; a conducting layer having a protruding portion protruding into the opening region along the first direction from a region in which the light-shielding film that defines a part of a region edge following the second direction of the opening region is formed; a first contact portion electrically connecting the pixel electrode and the protruding portion, the first contact portion being formed so as to not overlap the light-shielding film; and a second contact portion electrically connecting the conducting layer and the hold capacitor, the second contact portion being formed so as to overlap the light-shielding film, wherein the first and second contact portions are arranged along the first direction.