Electrode, preparation method thereof and light emitting diode

The invention provides an electrode, a preparation method thereof and a light-emitting diode, and belongs to the technical field of photoelectron manufacturing. The electrode comprises a metal reflecting layer, a metal conducting layer, a barrier layer and an insulating layer, wherein the metal reflecting layer is provided with a first surface, a second surface and a first side wall, the first surface and the second surface are opposite, and the first side wall is connected with the first surface and the second surface; the insulating layer wraps the first side wall in a surrounding mode, and the barrier layer and the metal conductive layer are sequentially stacked on the first surface and the surface of the insulating layer. The embodiment of the invention can improve the conductivity of the electrode and improve the stability of the light-emitting diode. 本公开提供了一种电极及其制备方法和发光二极管，属于光电子制造技术领域。该电极包括：金属反射层、金属导电层、阻挡层和绝缘层，所述金属反射层具有相反的第一表面和第二表面，以及连接所述第一表面和所述第二表面的第一侧壁；所述绝缘层环绕包覆所述第一侧壁，所述阻挡层和所述金属导电层依次层叠在所述第一表面和所述绝缘层的表面