Light emitting device and manufacturing method thereof
View Patent ↗A light emission device manufactured by a method of forming a curved surface having a radius of curvature to the upper end of an insulator 19 , exposing a portion of the first electrode 18 c to form an inclined surface in accordance with the curved surface, and applying etching so as to expose the first electrode 18 b in a region to form a light emission region, in which emitted light from the layer containing the organic compound 20 is reflected on the inclined surface of the first electrode 18 c to increase the total take-out amount of light in the direction of an arrow shown in FIG. 1 A and, further, forming a light absorbing multi-layered film 24 comprising light absorbing multi-layered film on the first electrode 18 c other than the region to form the light emission region, thereby obtaining a light emission device of a structure increasing the amount of light emission taken out in one direction in a light emission element, while not all the light formed in the layer containing the organic compound are taken out from the cathode as a transparent electrode toward TFT but the light was emitted also, for example, in the lateral direction (direction parallel with the plane of the substrate).
1. A display device comprising:
a transistor comprising a channel region, a source region, and a drain region;
a first conductive film comprising aluminum, the first conductive film being electrically connected to the source region or the drain region;
a second conductive film comprising molybdenum, the second conductive film being over the first conductive film and having a first opening;
an insulating film over the second conductive film, the insulating film having a second opening overlapped with the first opening; and
a third conductive film over the insulating film and in the second opening.
2. The display device according to claim 1 ,
wherein the second conductive film has an inclined surface with an angle of inclination larger than 50° and smaller than 60° in the first opening.
3. The display device according to claim 1 , wherein the third conductive film is a light transmitting conductive film.
4. The display device according to claim 1 , wherein the first opening in the second conductive film is formed by an etching process with a self-alignment manner using the insulating film as a mask.
5. The display device according to claim 1 , wherein the first conductive film functions as an anode and the third conductive film functions as a cathode.
6. The display device according to claim 1 ,
wherein the channel region comprises silicon.
7. The display device according to claim 1 ,
wherein the second conductive film is a light absorbing multi-layered film.
8. The display device according to claim 1 ,
wherein the second opening is overlapped with the first opening in a light-emitting region.
9. A display device comprising:
a transistor comprising a channel region, a source region, and a drain region;
a first conductive film comprising aluminum, the first conductive film being electrically connected to the source region or the drain region;
a second conductive film comprising molybdenum, the second conductive film being over the first conductive film and having a first opening;
an insulating film over the second conductive film, the insulating film having a second opening overlapped with the first opening;
a third conductive film over the insulating film and in the second opening; and
an auxiliary electrode over the third conductive film.
10. The display device according to claim 9 ,
wherein the second conductive film has an inclined surface with an angle of inclination larger than 50° and smaller than 60° in the first opening.
11. The display device according to claim 9 , wherein the third conductive film is a light transmitting conductive film.
12. The display device according to claim 9 , wherein the first opening in the second conductive film is formed by an etching process with a self-alignment manner using the insulating film as a mask.
13. The display device according to claim 9 , wherein the first conductive film functions as an anode and the third conductive film functions as a cathode.
14. The display device according to claim 9 ,
wherein the channel region comprises silicon.
15. The display device according to claim 9 ,
wherein the second conductive film is a light absorbing multi-layered film.
16. The display device according to claim 9
wherein the second opening is overlapped with the first opening in a light-emitting region.
17. A display device comprising:
a transistor comprising a channel region, a source region, and a drain region;
a first conductive film comprising aluminum, the first conductive film being electrically connected to the source region or the drain region;
a second conductive film comprising molybdenum, the second conductive film being over the first conductive film and having a first opening;
an insulating film over the second conductive film, the insulating film having a second opening overlapped with the first opening;
a third conductive film over the insulating film and in the second opening; and
a coloring layer over the third conductive film.
18. The display device according to claim 17 ,
wherein the second conductive film has an inclined surface with an angle of inclination larger than 50° and smaller than 60° in the first opening.
19. The display device according to claim 17 , wherein the third conductive film is a light transmitting conductive film.
20. The display device according to claim 17 , wherein the first opening in the second conductive film is formed by an etching process with a self-alignment manner using the insulating film as a mask.
21. The display device according to claim 17 , wherein the first conductive film functions as an anode and the third conductive film functions as a cathode.
22. The display device according to claim 17 ,
wherein the channel region comprises silicon.
23. The display device according to claim 17 ,
wherein the second conductive film is a light absorbing multi-layered film.
24. The display device according to claim 17
wherein the second opening is overlapped with the first opening in a light-emitting region.