Light-emitting device having a patterned substrate

A Light-Emitting Diode device, comprising:

• a substrate;
• an epitaxial layer arranged at one side of the substrate, wherein the epitaxial layer comprises an N-type layer, a P-type layer, and an active layer between the N-type layer and the P-type layer;
• an N-type electrode, which is in ohmic contact with one side of the N-type layer that is away from the substrate;
• a P-type electrode, which is in ohmic contact with one side of the P-type layer that is away from the substrate;
• an adhesive layer, one side of which is electrically glued to both one side of the N-type electrode that is away from the N-type layer and one side of the P-type electrode that is away from the P-type layer;
• and
• a patterned substrate electrically glued to the other side of the adhesive layer;
• wherein, the Light-Emitting Diode device further comprises an insulating layer between the N-type electrode and the P-type electrode, with the N-type electrode and the P-type electrode being electrically insulated by the insulating layer.