Patent ID: 8228585

Claim:
A substrate for electro-optical devices, which has a display region where a plurality of pixels is arranged, comprising: a substrate, a pixel electrode provided for each of the pixels on the substrate, a pixel transistor which is provided for each of the pixels on the substrate on a lower layer side than the pixel electrode, the pixel transistor including a gate electrode, a semiconductor layer, and a gate insulating film selectively provided in a specific region on the substrate between the gate electrode and the semiconductor layer such that the gate insulating film extends past a perimeter of the gate electrode in plan view and is surrounded by a region that does not include the gate insulating film in plan view, the pixel transistor being electrically connected to the pixel electrode, an interlayer insulating film arranged between the pixel electrode and the pixel transistor and selectively provided in a specific region on the substrate, a periphery transistor provided in a peripheral region positioned on the periphery of the display region on the substrate, and a connection wire formed in the same film as the pixel electrode in a region where the interlayer insulating film and the gate insulating film included in the pixel transistor and the periphery transistor are not formed in plan view, and electrically connected to the periphery transistor.