Lighting Device

A lighting device comprising:

• a substrate having a first opening in a center of the substrate;
• a first electrode layer over the substrate;
• a conductive layer over the substrate;
• an EL layer over the first electrode layer;
• a second electrode layer over the EL layer and electrically connected to the conductive layer;
• an insulating film covering the substrate, the first electrode layer, the EL layer, and the second electrode layer, and having a second opening in the center of the substrate;
• and
• a first connecting portion and a second connecting portion over the substrate and in the second opening,
• wherein the first connecting portion is formed by the first electrode layer led to the second opening, and
• wherein the second connecting portion is formed by the conductive layer provided in the second opening.

A lighting device comprising:

• a substrate having a first opening in a center of the substrate;
• a first electrode layer over the substrate, the first electrode layer having a second opening which overlaps the first opening;
• an EL layer over the first electrode layer;
• a second electrode layer over the EL layer, the second electrode layer having a third opening which overlaps the first opening;
• a conductive layer electrically connected to a part of an edge of the second opening;
• and
• an insulating film covering the substrate, the first electrode layer, the EL layer, and the second electrode layer, and having a fourth opening in the center of the substrate,
• wherein the conductive layer is provided in the fourth opening, and
• wherein a part of the second electrode layer extends beyond an edge of the fourth opening.

A lighting device comprising:

• a substrate having a first opening in a center of the substrate;
• a first electrode layer over the substrate, the first electrode layer having a second opening which overlaps the first opening;
• a conductive layer provided over the substrate;
• an EL layer over the first electrode layer;
• a second electrode layer over the EL layer, the second electrode layer having a third opening which overlaps the first opening;
• and
• an insulating film covering the substrate, the first electrode layer, the EL layer, and the second electrode layer, and having a fourth opening in the center of the substrate,
• wherein the conductive layer is electrically connected to a part of an edge of the third opening and provided in the fourth opening, and
• wherein a part of the first electrode layer extends beyond an edge of the fourth opening.