Light-emitting device, display device, and semiconductor device

A light-emitting device comprising:

• a transistor, a first conductive layer, and a second conductive layer;
• an insulating layer over the transistor, the first conductive layer, and the second conductive layer;
• a first electrode and a third conductive layer over the insulating layer;
• a planarization film over the first electrode, the planarization film comprising a first opening portion;
• an electroluminescent layer over the first electrode and the planarization film;
• and
• a second electrode over the electroluminescent layer and the planarization film,
• wherein the second electrode is electrically connected to the third conductive layer through the first opening portion, and
• wherein the opening portion overlaps with the first conductive layer, the second conductive layer, and the third conductive layer.

A light-emitting device comprising:

• a transistor and a first conductive layer;
• a first insulating layer over the transistor and the first conductive layer;
• a first electrode and a second conductive layer over the first insulating layer;
• a second insulating layer over the first electrode;
• an electroluminescent layer over the first electrode and the second insulating layer;
• and
• a second electrode over the electroluminescent layer and the second insulating layer,
• wherein the second electrode is electrically connected to the second conductive layer,
• wherein the first conductive layer and the second conductive layer overlap each other at a portion where the second electrode is in contact with the second conductive layer, and
• wherein the first conductive layer is electrically floating.

A light-emitting device comprising:

• a transistor, a first conductive layer, and a second conductive layer;
• a first insulating layer over the transistor, the first conductive layer, and the second conductive layer;
• a first electrode and a third conductive layer over the first insulating layer;
• a second insulating layer over the first electrode;
• an electroluminescent layer over the first electrode and the second insulating layer;
• and
• a second electrode over the electroluminescent layer and the second insulating layer,
• wherein the second electrode is electrically connected to the third conductive layer, and
• wherein the first conductive layer, the second conductive layer and the third conductive layer overlap one another at a portion where the second electrode is in contact with the third conductive layer.