Electrical device
View Patent ↗An electrical device includes a first substrate, a second substrate opposed to a first side of the first substrate, and a functional element between the first side of the first substrate and the second substrate. A first electrode is arranged to a first substrate side of the functional element and overlaps with the functional element. A second electrode is arranged to a second substrate side of the functional element and overlaps with the functional element. An electronic component is arranged between the functional element and the first electrode, overlaps the first and second electrodes, and drives the functional element. A connecting section includes a first wiring, a second wiring, a first contact hole connecting the first electrode to the first wiring, and a second contact hole connecting the first wiring to the second wiring. The first contact hole has a portion that does not overlap with the second contact hole.
1. An electrical device comprising:
a first substrate having a first side and a second side, the first side being opposed to the second side;
a second substrate opposed to the first side of the first substrate;
a functional element arranged between the first side of the first substrate and the second substrate;
a first electrode arranged to a first substrate side of the functional element, the first electrode overlapping with the functional element in a planar view;
a second electrode arranged to a second substrate side of the functional element, the second electrode overlapping with the functional element in the planar view;
an electronic circuit arranged between the functional element and the first electrode, the electronic circuit overlapping with the first electrode and the second electrode in the planar view, the electronic circuit driving the functional element;
a protection circuit coupled between an output terminal of the electronic circuit and the first electrode; and
a connecting section electrically connecting the first electrode to the second electrode, the connecting section comprising:
a first wiring arranged between the first electrode and the functional element,
a second wiring arranged between the first wiring and the functional element,
a first contact hole connecting the first electrode to the first wiring, and
a second contact hole connecting the first wiring to the second wiring, the first contact hole having a portion that does not overlap with the second contact hole in the planar view,
wherein the protection circuit comprises a first electrostatic protection circuit coupled between the output terminal and the first wiring, and a second electrostatic protection circuit coupled between the output terminal and the second wiring.
2. The electrical device according to claim 1 , wherein the connecting section is provided at least along one side of the first substrate.
3. The electrical device according to claim 1 , wherein the first wiring, the second wiring, the first contact hole, and the second contact hole each are provided at least along one side of the first substrate.
4. The electrical device according to claim 1 , wherein at least a part of the connecting section is embedded in the first substrate.
5. The electrical device according to claim 1 , wherein:
the first substrate comprises a first base material and a second base material, the second base material is arranged between the first base material and the functional element, and
the first contact hole is formed in the first base material, the second contact hole is formed in the second base material, and the first wiring is provided between the first base material and the second base material.
6. The electrical device according to claim 1 , wherein the first substrate comprises base materials which have a flexibility.
7. The electrical device according to claim 1 , further comprising:
a third electrode arranged between the functional element and the second side of the first substrate,
wherein the functional element is an electro-optical element, and an optical state of the electro-optical element depends on a voltage between the second electrode and the third electrode.
8. The electrical device according to claim 1 , wherein the connecting section is not overlapping with the functional element in the planar view.
9. An electrical device comprising:
a first substrate having a first side and a second side, the first side being opposed to the second side,
a second substrate opposed to the first side of the first substrate,
a functional element arranged between the first side of the first substrate and the second substrate,
a first electrode arranged to a first substrate side of the functional element, the first electrode overlapping with the functional element in a planar view,
a second electrode arranged to a second substrate side of the functional element, the second electrode overlapping with the functional element in the planar view,
an electronic circuit arranged between the functional element and the first electrode, the electronic circuit overlapping with the first electrode and the second electrode in the planar view, the electronic circuit driving the functional element,
a protection circuit coupled between an output terminal of the electronic circuit and the first electrode; and
a connecting section electrically connecting the first electrode to the second electrode, the connecting section comprising:
a first wiring arranged between the first electrode and the functional element,
a second wiring arranged between the first wiring and the functional element,
a third wiring arranged between the second wiring and the functional element,
a first contact hole connecting the first wiring to the second wiring, and
a second contact hole connecting the second wiring to the third wiring, the first contact hole having a portion that does not overlap with the second contact hole in the planar view,
wherein the protection circuit comprises a first electrostatic protection circuit coupled between the output terminal and the first wiring, and a second electrostatic protection circuit coupled between the output terminal and the second wiring.
10. The electrical device according to claim 9 , wherein the connecting section is provided at least along one side of the first substrate.
11. The electrical device according to claim 9 , wherein the first wiring, the second wiring, the third wiring, the first contact hole, and the second contact hole are provided at least along one side of the first substrate.
12. The electrical device according to claim 9 , wherein at least a part of the connecting section is embedded in the first substrate.
13. The electrical device according to claim 9 , wherein:
the first substrate comprises a first base material and a second base material, the second base material arranged between the first base material and the functional element, and
the first contact hole is formed in the first base material, the second contact hole is formed in the second base material, and the second wiring is provided between the first base material and the second base material.
14. The electrical device according to claim 9 , wherein the first substrate comprises base materials which have a flexibility.
15. The electrical device according to claim 9 , further comprising:
a third electrode arranged between the functional element and the second side of the first substrate,
wherein the functional element is an electro-optical element, and an optical state of the electro-optical element depends on a voltage between the second electrode and the third electrode.
16. The electrical device according to claim 9 , wherein the connecting section is not overlapping with the functional element in the planar view.