About half the cost of LED-od is determined by these stages of high technology. The need to increase capacity to increase the flux led to the fact that the traditional form of the hull led ceases to meet producers due to lack of heat. It was necessary to bring your chip to the heat conducting surface. In this connection, to replace the traditional technology, and several more advanced SMD-technology, energy (surface montage details – surface mount components) comes to the most advanced technology of soi (chip on board). led technology with ids, is shown schematically in Fig. LEDs made of SMD-and soi technology, mounted (Glued) directly to a common substrate, which can act as a heat sink – in this case it is made of metal. So are led modules, which may be linear, rectangular or circular in shape, be 50 – 75 mm. It is very important to ensure uniformity and control structures on the surface of the substrate.
The cost of facilities for epitaxial growth of semiconductor nitride, developed in Europe (the company Aixtron and Thomas Swan) and the U.S. (Emcore), is about 1,5 – 2 million dollars. Experience of different companies showed that learn to get on the competitive structure of such a setup with the necessary parameters can be a time of one to three years. This is – technology that requires high culture. An important step in technology is the processing of planar films: they are etched, the establishment of contacts to n-and p-layers, the coating metal films for the pins. Film grown on a substrate, can be Cut to a few thousand chips ranging in size from 0,24 x0, 24 and 1×1 mm2. The next step is the creation of these led chips. Necessary to mount the crystal in the case, make contact outputs, produce optical coatings, antireflection surface for the output radiation or reflect it. If it is a white light-emitting diodes, it is necessary to evenly phosphor. We must ensure that heat from the crystal and the corps, to make a plastic dome, focusing radiation in the desired solid angle. About half the cost of LED-od is determined by these stages of high technology.
The need to increase capacity to increase the flux led to the fact that the traditional form Corps LEDs fail to meet the manufacturers due to lack of heat. It was necessary to bring your chip to the heat conducting surface. In this connection, to replace the traditional technologies and few more advanced SMD-tech-energy (surface montage details – surface mount parts) comes the most advanced technology of soi (chip on board). led technology with ids, is shown schematically in Fig. LEDs made of SMD-and soi technology, are mounted (glued) directly to a common substrate, which can act as a heat sink – in this case it is made of metal. So are led modules, which may be linear, rectangular or circular in shape, be rigid or flexible, in short, are designed to satisfy every whim designer. Appear and the led lamps with the same socket as a low-voltage halogen, designed to replace them. And for powerful lamps and spotlights are made the led assembly on a round the massive radiator. Earlier in the led assemblies were a lot of LEDs. Now, as the power led becomes less, but the optical system that directs light beam to the desired solid angle, is playing an increasing role.
The interested nanotechnology Goldstein and dreams to improve the two-dimensional teleconferencing Mowry invented kleytroniku about three years ago. Since then they have struggled to find a quick way to describe the idea to potential sponsors. By the way speaking, the