Lighting-class LED chip technology development
From August 2006, Ministry of Science and launch "Eleventh Five-Year" plan new material field 863, "Semiconductor Lighting Project" major projects, China's LED epitaxial materials, chip manufacturing, device packaging, phosphor, etc. have been seen with our own technology property rights cell technology, part of the core technology has originality, initially formed from the upstream material, the middle-chip preparation, the downstream application of the device packaging and integration of R & D and relatively complete industrial system. This column will be gradually introduced the 863 progress of the project in order to promote the industrialization of scientific and technological achievements.
Semiconductor lighting technology known as third-generation lighting and caused widespread concern around the world, its core technology and the field of competition mainly in the upper reaches of the whole industrial chain, namely, extension and chips. In recent years, semiconductor lighting power type LED chip technology research and development have made great progress, semiconductor lighting will also be in the next few years, is widely used. Semiconductor lighting can be realized in all the relevant material, gallium nitride (GaN)-based materials is the most important and most promising to achieve a real sense of semiconductor lighting materials. GaN-based light-emitting diodes (Light-Emitting Diode, LED) materials and devices are the current research and development and commercialization focus and hot spots.
Foreign semiconductor lighting chip technology Development Status
At present, Cree, Nichia, Lumileds, Osram, etc. a few foreign companies on the mainstream of the international lighting-class LED chip and device manufacturers, who have their own unique line of extension and chip technology, individual packages of chips produced by white light devices The luminous efficiency in general exceeds 100lm / W
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