Organic light-emitting diode (Organic Light-Emitting Diode, OLED) Also known as organic electroluminescent display, organic light-emitting semiconductor (Organic Electroluminesence Display, OED). And liquid crystal display (Liquid Crystal Display, LCD) is a different type of light-emitting principle. OLED by the Chinese-American professor Deng Qingyun (Ching W. Tang) in 1983 found in the laboratory, which launched a study of OLED. OLED display technology with self-luminous, wide viewing angle, almost infinitely high contrast, low power consumption, high response speed and so on. However, the price (large display panel), life, resolution, and LCD display can not match.