How about the heat dissipation of uv led? Is the heat dissipation of uv led light good?
The initial single chip microcomputer LED power is not high, the heat is limited, the problem is not hot, so the packaging is relatively simple. But in recent years, with the breakthrough of LED material technology, LED packaging technology will gradually develop from the early single-chip microcomputer to a flat, large-scale multi-chip packaging module; its current has changed from the low-power LED in the early 20th century to the present 1/3 to 1A or such high power LED, single LED input power is as high as 1W or even more, even 3W, 5W package more evolution.
As the high-brightness and high-power LED system will derive from the thermal problem the pros and cons that affect the product quality, the heat conduction element is quickly discharged into the surrounding environment, and the heat treatment must first be carried out from the packaging level (L1 L2). The current practice in this industry is to reduce the thermal resistance of the packaging module by passing the chip and solder or hot slurry through a hot water tank, through a hot melt pool, through a radiator.
Many terminal applications, such as small projectors, automobiles, and lighting sources, require more lumens or thousands of cavities in a specific area, and the package of the single-chip is obviously not enough. It is the future to package the multi-chip LED with the chip directly to the substrate. development trend.
The heat dissipation problem of uv led is a major obstacle to the development of led lighting. The use of ceramics or heat pipes is an effective way to prevent economic overheating, but thermal management solutions increase material costs, and the purpose of high-power LED thermal management is to effectively reduce R junction-to-case material solutions through the chip Provides lower thermal resistance, but high conductivity with additional or hot metal methods to provide heat directly from the chip to the outer package.
Of course, LED cooling elements and CPU cooling are similar. They are air cooling modules composed of radiators, heat pipes, fans and thermal interface materials. Of course, water cooling is one of the most popular thermal countermeasures. The input power of the LED TV backlight module, 40-inch and 46-inch LED backlight is 470W and 550W respectively, 80% of the heat is heat energy, and the required heat is about 360W and 440W.
So how to consume these calories? The industry is currently used for cooling water cooling, but the price is high, reliability and other problems; at the same time, heat pipes and cooling fans are also used for cooling.
