Summary of LED industry chain and analysis of its development status

At present, there are more than 1000 LED packaging enterprises above designated size in China, 2/3 of which are distributed in the Pearl River Delta region. According to statistics, Shenzhen has more than 1800 LED enterprises, which is the region where the LED industry is concentrated. Shenzhen LED packaging, display screen, lighting product quality, output and export volume are among the top in the country. In the industrial sector, LED packaging capacity has been formed and there is currently an excess supply. Market competition has intensified, resulting in a continuous decline in product prices, many small and medium-sized manufacturers operating difficulties, the industry reshuffle will continue. At present, there are more than 1000 LED packaging enterprises above designated size in China, 2/3 of which are distributed in the Pearl River Delta region. According to statistics, Shenzhen has more than 1800 LED enterprises, which is the region where the LED industry is concentrated. Shenzhen LED packaging, display screen, lighting product quality, output and export volume are among the top in the country. In the industrial sector, equipment has been formed-Material-Chip-Package- The industrial chain with relatively complete application is one of the large LED packaging bases and application product development bases in China. LED production equipment: including MOVVD equipment, liquid phase plating furnace, lithography machine, dicing machine, full-automatic Crystal fixing machine, gold wire ball welding machine, silicon aluminum wire ultrasonic pressure welding machine, glue filling machine, vacuum oven, chip counter, chip detector, film reversing machine, light color point fully automatic sorting machine, etc. Raw materials for LED light emitting materials and devices: including substrate materials gallium arsenide single crystal, aluminum nitride single crystal, etc. Most of them are group IIIV compound semiconductor single crystals, and the production process is relatively mature. Other materials include metal high purity gallium. The purity of raw materials is generally above 6N. LED chip: mainly refers to LED luminescent material epitaxial manufacturing and chip manufacturing. Due to the high development of epitaxial technology, the main structures of the device, such as light emitting layer, limiting layer, buffer layer, reflection layer, etc. , have been completed in the epitaxial process, chip manufacturing is mainly to make positive and negative electrodes and complete segmentation detection. LED packaging: in the semiconductor industry, LED packaging industry is different from other semiconductor device packaging industries. It can be used in different occasions such as reality, lighting, communication, etc, A wide variety of LED light emitting devices with different colors and shapes are packaged. LED application: refers to the industry formed after the application of LED display or lighting devices. As far as LED application is concerned, it should be wider and should also include information display in household appliances, instruments and light industrial products, but these are not enough to support LED downstream industries. The main application industries include LED display screen, LED traffic lights, solar cell LED navigation lights, liquid crystal backlight, LED lights, LED landscape lighting, LED special lighting, etc.