Light emitting device and method of manufacturing the same
A light emitting device comprises an anode electrode layer disposed in a first direction, a cathode electrode layer disposed in a second direction different from the first direction, an emitting area with a pixel forming on an area crossed by the anode electrode layer and the cathode electrode layer and a sub-electrode layer disposed outside of the emitting area and electrically connected with at least two the anode electrode layers.
1. A light emitting device comprising:
a substrate having an emitting part and a non-emitting part, the emitting part including an emitting area;
an anode electrode layer disposed on the substrate in a first direction;
a cathode electrode layer disposed only on the emitting part of the substrate in a second direction different from the first direction;
a pixel formed on the emitting area which is an area crossed by the anode electrode layer and the cathode electrode layer; and
a sub-electrode layer disposed only on the non-emitting part and electrically connected with at least two anode electrode layers.
2. The light emitting device of claim 1 , further comprising:
an insulation layer disposed between the anode electrode layer and the sub-electrode layer.
3. The light emitting device of claim 2 , wherein the insulation layer includes a contact part electrically connecting the anode electrode layer with the sub-electrode layer.
4. The light emitting device of claim 3 , wherein the pixel comprises a first sub-pixel emitting a first color, a second sub-pixel emitting a second color, and a third sub-pixel emitting a third color, wherein the contact part comprises a first contact part formed from removing a part of the insulation layer on the anode electrode layer corresponding to the first sub-pixel, a second contact part formed from removing a part of the insulation layer on the anode electrode layer corresponding to the second sub-pixel, a third contact part formed from removing a part of the insulation layer on the anode electrode layer corresponding to the third sub-pixel.
5. The light emitting device of claim 4 , wherein the sub-electrode layers are electrically connected to the first sub-pixel through the first contact part, the second sub-pixel through the second contact part, and the third sub-pixel through the third contact part.
6. The light emitting device of claim 5 , further comprising:
a driver applying a first data current to the first sub-pixel through the first contact part, a second data current to the second sub-pixel through the second contact part, and a third data current to the third sub-pixel through the third contact part.
7. The light emitting device of claim 1 , further comprising:
a first wall dividing the cathode electrode layers; and
a second wall dividing the sub-electrode layers.
8. The light emitting device of claim 7 , wherein a width of the first wall is different from a width of the second wall.
9. The light emitting device of claim 8 , wherein the width of the second wall is wider than that of the first wall.
10. The light emitting device of claim 1 , wherein the wherein a width of the sub-electrode layer is different from a width of the cathode electrode layer.
11. The light emitting device of claim 10 , wherein the width of the sub-electrode layer is substantially same as, or wider than, that of the cathode electrode layer.
12. A light emitting device comprising:
a substrate having an emitting part and a non-emitting part, the emitting part including emitting areas;
anode electrode layers disposed on the substrate in a first direction;
cathode electrode layers disposed only on the emitting part of the substrate in a second direction different from the first direction;
a plurality of pixels on the emitting areas which are areas crossed by the anode electrode layers and the cathode electrode layers;
sub-electrode layers disposed only on the non-emitting part in the second direction; and
at least one contact part formed on the anode electrode layers at positions which the anode electrode layers and the sub-electrode layers are crossed,
wherein the contact part is electrically connected to the pixels.
13. The light emitting device of claim 12 , wherein the pixel comprises a first sub-pixel emitting a first color, a second sub-pixel emitting a second color, and a third sub-pixel emitting a third color, wherein the contact part comprises a first contact part electrically connected to the first sub-pixel, a second contact part electrically connected to the second sub-pixel, a third contact part electrically connected to the third sub-pixel.
14. The light emitting device of claim 12 , further comprising:
a controller receiving a display data; and
a data driver applying data currents corresponding to the display data, to the sub-electrode layers, under control of the controller.
15. The light emitting device of claim 14 , wherein the sub-electrode layers are connected to the data driver in one direction.
16. The light emitting device of claim 14 , wherein one end of the sub-electrode layer is connected with the data driver in a part of the sub-electrode layers, and the other end of the sub-electrode layer is connected with the data driver in the other part of the sub-electrode layers.
17. The light emitting device of claim 12 , wherein the light emitting device is an organic electroluminescent device.
18. The light emitting device of claim 12 , wherein the light emitting device is used in an illuminating apparatus, a backlight apparatus, or a neon sign.