Investment in China has formed a more complete LED industrial chain

Chinese optical photonics Optoelectronics Industry Association branch secretary Peng Wanhua from the last century, high brightness LED (light emitting diode) since the invention, after ten years of efforts, has reached the functional lighting stage, and gradually entered the field of general lighting, has formed a relatively complete industrial chain, all countries and related group attention. China has also followed the frontier of the world science and technology, to speed up the development and industrialization of LED.

Industry status

High brightness LED rapid growth

In recent years LED devices, chip production increased rapidly, especially the high brightness LED chips and devices to grow faster. According to the China optical photonics Optoelectronics Industry Association Branch of statistics and estimates, currently engaged in LED about more than 2 thousand enterprises, including research units and production in epitaxial growth, chip manufacturing device package has more than and 40, about 600 enterprises, which have a certain scale of the package of about 100 enterprises, application products and supporting enterprises more than 1 thousand and 700. From raw materials, epitaxial growth, chip manufacturing, device packaging, application products and equipment to equipment, China has formed a relatively complete industrial chain.

Epitaxy, chip technology breakthrough

The core technology LED high brightness LED epitaxial growth and chip manufacturing technology, in recent years, the government and relevant research institutions attach great importance to the development of LED technology, invested a lot of money and manpower to research, the major research institutions with Peking University and Tsinghua University, Nanchang University, Chinese Academy of Sciences, Institute of physics, Institute of semiconductors in the thirteenth Research Institute of electronics technology group. In epitaxial growth, chip manufacturing, such as in different substrates (Al2O3, Si, SiC, AlN) on the growth of GaN epitaxial material, has developed a patterned substrate epitaxy, nonpolar and semipolar heteroepitaxy, substrate transfer, laser ablation, eutectic welding, ITO electrode, surface roughening and photonic crystal so, to improve the internal quantum efficiency and external quantum efficiency, achieved good results, has developed a AlGaN deep ultraviolet light emitting diodes (260nm ~ 400nm), have also developed the LED blue chip 1W, made of white LED luminous efficiency more than 80lm/W, and developed a four yuan red line AlGaInP power LED devices the luminous efficiency of about 40lm/W. Nanchang University has developed an independent intellectual property rights on the silicon substrate to grow GaN, and make blue, green LED chip, has been industrialized.

Domestic LED epitaxial growth and main chip manufacturing enterprises in Xiamen, Dalian Road, Shanghai three beautiful blue, Shanghai Blaupunkt, Shandong Huaguang, Hangzhou Shi, Jiangxi blue mingsum latticepower, Hebei, Shenyang, Xiamen Tong Hui, Jiangxi LIAN, Nanchang dry according to Xin Lei, Shanghai morning, Shanghai Yu body, Shenzhen century crystal source, Shenzhen Orient, Yangzhou Huaxia integration, Langfang core, Gansu Xintian electric, Wuhan Di source, Xi'an, Guangzhou and Dongguan in Puguang land, as well as foreign enterprises such as Wuhan Huacan, Xiamen Jingyu, Xiamen Mingda and Jin Jiangjing blue, these enterprises in the improvement of the chip structure and process a lot of work in improving the product performance, yield, process repeatability, has made great achievements in improving anti decay ability and reliability etc.. 2008 high brightness LED chip more than 30 billion, of which blue, green chips 8 billion ~ ~ 10 billion. In 2007, the domestic production of high brightness chips more than 21 billion, an increase of 75%, of which blue and green chips about 6 billion 500 million, an increase of 62.5%. LED large number of small packaging enterprises

The characteristics of domestic LED packaging enterprises is of small size and number, is 500 ~ 600, with a certain scale, sales of more than 10 million yuan in the main package of about 100 enterprises, enterprises have Xiamen Hualian, Foshan star, Jiangsu Wenrun, Guangzhou Hongli, Ningbo, Jiangxi LIAN, Tianjin Shengpu the star, Langfang Segotep, Shenzhen Ruifeng, Shenzhen, Zhuhai, Shenzhen's quanta Lifeng etc.. Can the device package contains complete varieties, single pipe, composite pipe, pixel tube, digital display, backlight, SMD-LED, micro LED, matrix display, special display, white LED, power LED and high-power LED module package, with the strength of enterprises, R & D investment is large, in the improvement of package structure, to improve the radiating performance, improve light efficiency, improve the anti decay and reliability aspects have achieved good results. Can be packaged in bulk 1WLED, its luminous efficiency of 100lm/W, thermal resistance can be controlled within 10 /W. Study on electrical science and Technology Group thirteenth in developed high-power LED packaging products, with independent property rights in addition, but also the development of vertical structure with independent property rights of new products without welding line power LED package, made a contribution to the power LED packaging industry.

Domestic LED packaging materials and accessories supporting ability is very strong, in addition to individual materials, the vast majority of materials are provided for the domestic, mainly gold, silicon aluminum wire, epoxy resin, silica gel, silver paste, conductive adhesive, bracket, strip, plastic parts, packaging mold and fixture. Has formed a certain scale, enterprises are mainly concentrated in the Pearl River Delta and Ningbo area. Another package for white LED fluorescent powder, more than a dozen companies are also domestic research and production, have been widely used for white LED package, Dalian Lu Ming developed silicate phosphor, with independent intellectual property rights in addition, also developed with independent intellectual property rights of the blue light nitride phosphor red and green, the RGB consists of three primary colors of white LED, the effect is very good, made a contribution to the white LED package.

Rapid development of standards and testing platform

In recent years in the development of semiconductor lighting technology has made great progress in terms of standard