Patent ID: 8736520

Claim:
An electro-optical device comprising: a plurality of pixels arranged in matrix having a row over a substrate, each of the plurality of pixels comprising an electroluminescent element, a first transistor, and a second transistor; and a gate signal line and a first line extending through the plurality of pixels in the row, wherein a gate of the first transistor is electrically connected to the gate signal line, wherein a first terminal and a second terminal of the second transistor are electrically connected to the first line and an anode of the electroluminescent element, respectively, wherein a second terminal of the first transistor is electrically connected to a gate of the second transistor, wherein the first line is configured to supply current to the electroluminescent element, wherein each of the plurality of pixels further comprises: an interlayer insulating film over the first transistor and the second transistor and under and in contact with the anode; and an insulating film over the interlayer insulating film, wherein the electroluminescent element comprises an EL layer over and in contact with the anode, and wherein an edge portion of the insulating film covers an edge portion of the anode and has a tapered shape.