Patent ID: 7710364

Claim:
An electroluminescent apparatus comprising: a substrate; a transistor formed above the substrate, the transistor including a gate electrode; a conductive layer including the gate electrode of the transistor and an extension electrode extended from the gate electrode of the transistor; a pixel electrode coupled to the transistor; an opposite electrode disposed opposite the pixel electrode; a luminescent element disposed between the pixel electrode and the opposite electrode; a common power supply line having a linearly shaped portion extending in a direction, the common power supply line supplying a current to the luminescent element through the transistor, the common power supply line being coupled to a semiconductor layer of the transistor via a contact hole, the linearly shaped portion of the common power supply line being disposed in confrontation with a portion of the extension electrode, the contact hole overlapping the common power supply line in plan view at an extension of the common power supply line that extends from the linearly shaped portion in the direction in which the linearly shaped portion extends; an inner layer insulation film disposed between the extension electrode and the linearly shaped portion of the common power supply line disposed in confrontation with the portion of the extension electrode; and a holding capacitor formed by the extension electrode, the linearly shaped portion of the common power supply line disposed in confrontation with the portion of the extension electrode, and the inner layer insulation film.