√Organic light emitting diode (OLED) is also called organic light emitting diode (OLED).

√OLED is a kind of current type organic light-emitting device, which is a phenomenon of light-emitting through carrier injection and recombination. The luminous intensity is proportional to the injected current.

√Under the action of electric field, the hole produced by anode and the electron produced by cathode will move to the hole transport layer and the electron transport layer respectively, and migrate to the light-emitting layer.

√When they meet in the luminescent layer, they produce energetic excitons, which excite the luminescent molecules and finally produce visible light.