Light emitting device with an insulating layer
View Patent ↗The present invention is related to a light emitting device with an insulating layer, which comprises a transparent substrate, a first light emitting unit, a second light emitting unit, an insulating layer and a conducting layer. The first light emitting unit and the second light emitting unit are set up on the transparent substrate, wherein the second light emitting unit has an appearance of a stair structure. The insulating layer is set between the first and the second light emitting units. The conducting layer is on the insulating layer in order to conduct the first and the second light emitting units. Because of the appearance of the stair structure of the second light emitting unit, improving the cladding efficiency of the insulating layer, further improving the insulating efficiency of the insulating layer and avoiding the insulating layer loosing and the leakage between the first and the second light emitting units.
1. A light emitting device with an insulating layer, comprising:
a transparent substrate;
a first light emitting unit setting up on the said transparent substrate and the first light emitting unit comprising:
a first semiconductor layer setting up on the transparent substrate;
a first light emitting layer setting up on the first semiconductor layer;
a second semiconductor layer setting up on the first light emitting layer;
a first electrode setting up on said first semiconductor layer; and
a second electrode setting up on said second semiconductor layer;
a second light emitting unit setting up on the transparent substrate and the second light emitting unit comprising:
a third semiconductor layer setting up on the transparent substrate;
a second light emitting layer setting up on the third semiconductor layer;
a fourth semiconductor layer setting up on the second light emitting layer;
a third electrode setting up on the third semiconductor layer; and
a fourth electrode setting up on the fourth semiconductor layer;
an insulating layer setting between the first light emitting unit and the second light emitting unit and a contact surface between the insulating layer and the second light emitting unit being a stair surface while one side of the third semiconductor layer, the second light emitting layer and the fourth semiconductor layer of the second light emitting unit has an appearance of the stair surface, the insulating layer covered on one side of the first electrode and the first semiconductor layer of the first light emitting unit, and part of top surface of the transparent substrate, and one side with a portion of top surface of the third semiconductor layer, and one side of the second light emitting layer and the fourth semiconductor layer of the second light emitting unit; and
a conducting layer setting up on said insulating layer, electrically coupling to said first electrode of said first light emitting unit and said fourth electrode of said second light emitting unit.
2. The light emitting device as claimed in claim 1 , wherein the top of said insulating layer is not a flat plane.
3. The light emitting device as claimed in claim 1 , wherein said plural first emitting units and said plural second light emitting units are connected in series or parallel or connected in both ways forming a bridge rectifying circuit.
4. The light emitting device as claimed in claim 1 wherein said conducting layer is a transparent conducting layer.
5. The light emitting device as claimed in claim 1 wherein said conducting layer is a metal conducting layer.