Patent ID: 6838697

Claim:
An electro-optical device, comprising: a substrate; a scanning line over the substrate; a data line over the substrate; a thin film transistor which is disposed in correspondence with an intersection between the scanning line and the data line; a pixel electrode which is disposed in correspondence with the thin film transistor; a pixel potential side capacitance electrode which is electrically connected to the pixel electrode, and which constitutes a storage capacitor; a dielectric film; a fixed potential side capacitance electrode which is disposed in opposition to the pixel potential side capacitance electrode via the dielectric film, and which constitutes the storage capacitor; and a lower light shield film which is disposed under the thin film transistor, and which shields, at least a channel region of the thin film transistor from entrance of light; the lower light shield film and the fixed potential side capacitance electrode being electrically connected; the lower light shield film constructing, at least one of a part of a capacitive line to keep the fixed potential side capacitance electrode at a fixed potential, and a redundant wiring line of the capacitive line; the lower light shield film and the fixed potential side capacitance electrode being electrically connected by a first contact hole which is provided in an inter-layer insulating film existing between the lower light shield film and the fixed potential side capacitance electrode; and the first contact hole being disposed under the data line.