Display device
A structure of an EL display device which has an increased display area is provided. Further, a structure of an EL display device which has a high definition display is provided. An auxiliary electrode is formed over a first partition and side surfaces of the auxiliary electrode are covered with a second partition. A top surface of the auxiliary electrode is in contact with the conductive film which is one electrode of a light-emitting element and has a light-transmitting property, which enables a large-area display. Further, even the distance between the adjacent light-emitting elements is shortened, the auxiliary electrode can be provided between the adjacent light-emitting elements, which enables a high definition display.
1. A display device comprising:
a transistor over a substrate having an insulating surface;
a first electrode electrically connected to the transistor;
a first partition covering an edge of the first electrode;
a conductive layer over the first partition;
a second partition over the first partition, the second partition covering at least a side surface of the conductive layer;
a light-emitting layer containing an organic compound over the first electrode; and
a second electrode over the light-emitting layer.
2. The display device according to claim 1 ,
wherein an edge of the light-emitting layer is covered with the second electrode, and
wherein the second electrode is in contact with the first partition.
3. The display device according to claim 1 , wherein the conductive layer is a film or a laminated film including an element selected from Ag, Mg, Cu, and Mo, an alloy material containing the element as a main component, or a compound material containing the element as a main component.
4. The display device according to claim 1 , further comprising a coloring layer over the second electrode.
5. The display device according to claim 1 , further comprising a light-shielding film over the second partition.
6. The display device according to claim 1 , wherein a semiconductor layer of the transistor includes an oxide semiconductor material.
7. The display device according to claim 1 , wherein the second electrode has a material that is the same as a material of the conductive layer.
8. The display device according to claim 1 , further comprising a third electrode having a material that is the same as a material of the first electrode,
wherein the third electrode is electrically connected to a terminal electrode,
wherein the conductive layer is in contact with the third electrode, and
wherein the second electrode is in contact with the third electrode.
9. The display device according to claim 1 , wherein the second electrode has a light-transmitting property.
10. A display device comprising:
a transistor over a substrate having an insulating surface;
a first electrode electrically connected to the transistor;
a first partition covering an edge of the first electrode;
a conductive layer over the first partition;
a second partition over the first partition, the second partition covering a side surface of the conductive layer;
a light-emitting layer containing an organic compound over the first electrode; and
a second electrode over the light-emitting layer,
wherein the second partition has an opening reaching the conductive layer, and
wherein the conductive layer is electrically connected to the second electrode through the opening.
11. The display device according to claim 10 ,
wherein an edge of the light-emitting layer is covered with the second electrode, and
wherein the second electrode is in contact with the first partition.
12. The display device according to claim 10 , wherein the conductive layer is a film or a laminated film including an element selected from Ag, Mg, Cu, and Mo, an alloy material containing the element as a main component, or a compound material containing the element as a main component.
13. The display device according to claim 10 , further comprising a coloring layer over the second electrode.
14. The display device according to claim 10 , further comprising a light-shielding film over the second partition.
15. The display device according to claim 10 , wherein a semiconductor layer of the transistor includes an oxide semiconductor material.
16. The display device according to claim 10 , wherein the second electrode has a material that is the same as a material of the conductive layer.
17. The display device according to claim 10 , further comprising a third electrode having a material that is the same as a material of the first electrode,
wherein the third electrode is electrically connected to a terminal electrode,
wherein the conductive layer is in contact with the third electrode, and
wherein the second electrode is in contact with the third electrode.
18. The display device according to claim 10 , wherein the second electrode has a light-transmitting property.
19. A semiconductor device comprising:
a transistor over a substrate having an insulating surface;
a first electrode electrically connected to the transistor;
a first partition covering an edge of the first electrode;
a conductive layer over the first partition;
a second partition over the first partition, the second partition covering at least a side surface of the conductive layer;
a light-emitting layer containing an organic compound over the first electrode;
a second electrode over the light-emitting layer.