LED Industry Chain Can Be Divided Into Five Parts

LED industry chain can be divided into five parts. First, the raw materials. Second, LED upstream industries, including epitaxial materials and chip manufacturing. Third, LED midstream industry, including a variety of LED accessories and packaging. Fourth, LED downstream industries, mainly including LED application products industry. Fifth, test equipment and production equipment.

LED light-emitting materials and devices, raw materials, including gallium arsenide single crystal substrate material and aluminum nitride single crystal, most of them are III-V compound semiconductor crystal, the production process is relatively mature, can be open-to-use buffing supply. There are other raw materials: high purity gallium metal, high purity metal organic sources such as trimethyl gallium, triethyl gallium, trimethyl smoke, trimethyl aluminum, high purity gases ammonia, nitrogen and hydrogen. The purity of raw materials in general need more than 6N. Packaging materials including epoxy resin, ABS, PC, PPD and so on.

Epitaxial materials testing instruments are double-crystal x-ray diffraction, fluorescence spectroscopy, Rutherford backscattering spectrometer channel and so on. LED Chip and device test equipment mainly including optical and electrical properties tester and spectrum analyzer. The main test parameters are the forward and reverse voltage, current characteristics, normal intensity, angular distribution of light intensity, luminous flux, peak wavelength, dominant wavelength, color cursor , color-rendering index and so on. production facilities including MOCVD equipment, liquid phase epitaxy furnace, coating machines, lithography machines, dicing machines, fully automatic solid crystal, gold wire bonder, ultrasonic pressure Si-Al wire welder, irrigation plastic machine, vacuum oven chip counter, the chip detector, inverted membrane machine, electric light color automatic sorting machine and so on.