Light-emitting diode (LED) radiating based on diamond microscopic graph structure

The invention discloses a light-emitting diode (LED) radiating based on a diamond microscopic graph. The LED comprises a printed circuit board (PCB) plate (7), and is characterized in that: a heat generation surface of the PCB plate (7) contacts the bottom surface of a diamond substrate (6); a fine structure capable of improving the radiating area is arranged on the surface of the diamond substrate (6) contacting the PCB plate (7); the upper bottom surface of the diamond substrate (6) is connected with an active layer (2) through an inverted welding layer (3); the active layer (2) is grown ona sapphire (1); a P-type electrode (4) and an N-type electrode (8) for controlling the current of the active layer (2) are arranged on the diamond substrate (6) and are connected with the PCB plate (7) through corresponding electrode wires (5 and 9); and the PCB plate (7) is controlled by a temperature sensor (10) to realize current adjustment so that the luminous quantity of the active layer (2)is controlled and the LED