Electro-optical device and electronic device with conductive layer electrically coupled to symmetrically arranged drive transistors

1 . An electro-optical device comprising:

a first light-emitting element;

a second light-emitting element;

a first drive transistor corresponding to the first light-emitting element;

a second drive transistor corresponding to the second light-emitting element and provided in a first direction relative to the first drive transistor;

a first conductive layer electrically coupled to the first drive transistor and the second drive transistor and supplied with a constant potential, the first conductive layer being provided along a second direction intersecting the first direction; and

a first power-supply wiring line and a second power-supply wiring line each being supplied with the constant potential, wherein

in a plan view, at least a portion of the first conductive layer is provided between a first gate electrode of the first drive transistor and a second gate electrode of the second drive transistor and is equal distance to the first gate electrode and the second gate electrode,

the first conductive layer is disposed between the first power-supply wiring line and the second power-supply wiring line in the first direction,

a portion of the first power-supply wiring line overlaps with the first gate electrode and extends toward a side of the first gate electrode in the first direction away from the first conductive layer, and

a portion of the second power-supply wiring line overlaps with the second gate electrode and extends toward a side of the second gate electrode in the first direction away from the first conductive layer.

2 . The electro-optical device according to claim 1 , wherein

the first conductive layer is provided at a same layer as the first gate electrode and the second gate electrode.

3 . The electro-optical device according to claim 1 , wherein

in the plan view, the first drive transistor and the second drive transistor are disposed so as to be symmetric with respect to an imaginary line overlapping with the first conductive layer and extending in the second direction.

4 . The electro-optical device according to claim 3 comprising:

an impurity region provided along the second direction and supplied with a potential equal to that of the first conductive layer, wherein

in the plan view, the impurity region overlaps with the first conductive layer.

5 . The electro-optical device according to claim 1 comprising:

an impurity region provided along the second direction and supplied with a potential equal to that of the first conductive layer, wherein

in a plan view, the impurity region overlaps with the first conductive layer.

6 . The electro-optical device according to claim 5 comprising:

a second conductive layer supplied with a potential equal to that of the first conductive layer and provided at an opposite side of the first conductive layer from the impurity region, wherein

in the plan view, the second conductive layer overlaps with the first conductive layer.

7 . The electro-optical device according to claim 6 , wherein

the second conductive layer is electrically coupled to the first conductive layer through a first contact hole, and is electrically coupled to the impurity region through a second contact hole.

8 . The electro-optical device according to claim 5 , wherein

the impurity region includes one of source/drain regions of the first drive transistor and one of source/drain regions of the second drive transistor.

9 . An electronic device comprising the electro-optical device according to claim 1 .

10 . An electro-optical device comprising:

a first light-emitting element;

a second light-emitting element;

a first drive transistor corresponding to the first light-emitting element;

a second drive transistor corresponding to the second light-emitting element and provided in a first direction relative to the first drive transistor;

a first conductive layer electrically coupled to the first drive transistor and the second drive transistor and supplied with a constant potential, the first conductive layer being provided along a second direction intersecting the first direction; and

a first power-supply wiring line and a second power-supply wiring line each being supplied with the constant potential, wherein

in a plan view, the first drive transistor and the second drive transistor are disposed so as to be symmetric with respect to an imaginary line overlapping with the first conductive layer and extending in the second direction,

the first conductive layer is disposed between the first power-supply wiring line and the second power-supply wiring line in the first direction,

a portion of the first power-supply wiring line overlaps with a first gate electrode of the first drive transistor and extends toward a side of the first gate electrode in the first direction away from the first conductive layer, and

a portion of the second power-supply wiring line overlaps with a second gate electrode of the second drive transistor and extends toward a side of the second gate electrode in the first direction away from the first conductive layer.

11 . An electro-optical device comprising:

a first light-emitting element;

a second light-emitting element;

a first drive transistor corresponding to the first light-emitting element and including a first source, a first drain, and a first gate electrode;

a second drive transistor corresponding to the second light-emitting element and including a second source, a second drain, and a second gate electrode;

a first conductive layer being electrically coupled to the first drive transistor and the second drive transistor, being supplied with a constant potential, and being disposed between the first drive transistor and the second drive transistor in a plan view;

a second conductive layer being disposed along the first conductive layer in the plan view; and

a third conductive layer being disposed along the first conductive layer in the plan view, wherein

the first drive transistor and the second drive transistor are disposed along a first direction in the plan view,

the first conductive layer is disposed along a second direction intersecting the first direction in the plan view,

the first gate electrode and the second gate electrode are disposed symmetrically with respect to an imaginary line overlapping with the first conductive layer, the imaginary line is extending along the second direction in the plan view,

the second conductive layer and the third conductive layer are disposed symmetrically with respect to the imaginary line in the plan view,

the second conductive layer overlaps with the first gate electrode between the first source and the first drain in the plan view,

the third conductive layer overlaps with the second gate electrode between the second source and the second drain in the plan view,

a portion of the second conductive layer overlapping the first gate electrode extends toward a side of the first gate electrode in the first direction away from the first conductive layer, and

a portion of the third conductive layer overlapping the second gate electrode extends toward a side of the second gate electrode in the first direction away from the first conductive layer.

12 . An electro-optical device comprising:

a first light-emitting element and a second light-emitting element that are disposed along a first direction in a plan view;

a third light-emitting element and a fourth light-emitting element that are disposed along the first direction in the plan view;

a first drive transistor corresponding to the first light-emitting element;

a second drive transistor corresponding to the second light-emitting element and being disposed in the first direction with respect to the first drive transistor in the plan view;

a third drive transistor corresponding to the third light-emitting element;

a fourth drive transistor corresponding to the fourth light-emitting element and being disposed in the first direction with respect to the third drive transistor in the plan view;

a first conductive layer extending along a second direction intersecting the first direction in the plan view, being supplied with a constant potential, and being disposed between the first drive transistor and the second drive transistor, and between the third drive transistor and the fourth drive transistor, in the plan view;

a second conductive layer being disposed along the first conductive layer in the plan view, and being electrically coupled to the first conductive layer;

a third conductive layer being disposed along the first conductive layer in the plan view, and being electrically coupled to the first conductive layer;

a fourth conductive layer being disposed between the first drive transistor and the second drive transistor, and overlapping with the first conductive layer in the plan view;

a fifth conductive layer being disposed between the third drive transistor and the fourth drive transistor, and overlapping with the first conductive layer in the plan view; and

an insulating layer being disposed between the first conductive layer and the fourth conductive layer, and between the first conductive layer and the fifth conductive layer, the insulating layer having a first contact hole that electrically couples the first conductive layer and the fourth conductive layer, and having a second contact hole that electrically couples the first conductive layer and the fifth conductive layer, wherein

the first conductive layer is electrically coupled to the first drive transistor, the second drive transistor, the third drive transistor, and the fourth drive transistor,

the first drive transistor and the second drive transistor are disposed symmetrically with respect to an imaginary line overlapping with the first conductive layer, the imaginary line is extending along the second direction in the plan view,

the third drive transistor and the fourth drive transistor are disposed symmetrically with respect to the imaginary line in the plan view,

the second conductive layer and the third conductive layer are disposed symmetrically with respect to the imaginary line in the plan view, and

the fourth conductive layer and the fifth conductive layer are apart from each other, and

the first contact hole is disposed between the second conductive layer and the third conductive layer.