The characteristics of city street lamp, led chip

In the light of 2015 show, several companies launched led flip chip led street lamps, industrial and mining lamp, garden lamp, absorb dome light, led Chinese knot, etc. What is the led flip chip? What is the advantage of it? The author queries the catch up with some information about:

in wide exhibition, 2015 companies launched led flip chip led street lamps, mining lamps, garden lamp, absorb dome light, led the Chinese knot, etc. What is the led flip chip? What is the advantage of it? The author asked some information and make things up: light-emitting diodes, flip chip is juxtaposed with vertical structure and horizontal structure of one of the three kinds of die structure. It can be directly bonded to the ceramic substrate, without the need for bonding line. Its luminescent properties are active layer downwards, and transparent sapphire is located in the active layer above. Active layer through the sapphire substrate is needed to launch a light outside the chip. Upside-down traffic lights engineering led chip has four advantages: first, the sapphire, do not need to heat dissipation, active layer is more close to the substrate, the cooling performance is good. Second, flip chip with excellent extension of current performance and ohmic contact performance, its higher light efficiency under large current drive. Third, flip chip can be encapsulated in the absence of gold thread, this reduces from the source device the possibility of death. Therefore, under the condition of high power, flip chip is safer and more reliable than ordinary chip. Fourth, the size can be made smaller and optical device can be easier to match, it can effectively reduce the maintenance cost of the products. Due to the led chip technology is not very mature, there is no gold flip chip in the short term can not completely replace the traditional COB. However, after talking with exhibitors, the author deeply led chip flip chip technology content is rich, have great potential for development. With the progress of technology and mature, it will certainly be destructive impact on the led lighting industry.