Why ACLED light source module is not easy to be accepted

In recent years, the topic of ACLED light source module is very hot in the industry, but its application is relatively few. In fact, it has appeared for a long time abroad. As early as 2005, South Korea’s Seoul Semiconductor Company had used AC to directly drive ACLED light source modules to make them emit light, followed by the United States, Germany, and Taiwan. ACLED light source module products for practical application of system solutions. With the development of ACLED light source modules abroad, there are also many domestic companies researching and applying them, but the effect is not so obvious.

Because the key disadvantage of the single-core ACLED light source module is that multiple light-emitting devices are connected to a small die. The limited chip area greatly limits the high-power output. The process affects the LED Light module efficiency and The built-in constant current is not easy to control. When the grid voltage rises or the dissipated power surges, it will seriously damage its internal.

At present, the widely popular 'LED Light module engine' adopts C0B package with aluminum substrate and linear constant current technology. It proposes an effective solution for high-power output and becomes the mainstream of ACLED light source modules. However, the fatal disadvantage of this technology is that it must rely on an aluminum substrate with multi-layer thermal resistance. The traditional aluminum (or copper) substrate is an aluminum substrate made of FR4 fiberboard or BT board through a laminating process, and its thermal conductivity is generally only 2 About w/mK, the thermal conductivity of pure aluminum without insulating layer is 237 w/mK, which is more than one hundred times different. Such a large package thermal resistance will increase the heat dissipation ratio and accelerate the LED light. Decay and damage reduce the service life of the LED. Although some people use ceramic substrates, although the thermal conductivity has been improved, there are still many problems with the heat dissipation and fixing of the lamp body.

ACLED LED Light module source modules have gradually developed, but they are not ideal in terms of luminous brightness, medium and high power output, etc., more importantly, the poor heat dissipation caused by the use of SMD and aluminum substrates affects stability and life, but I believe There will be new solutions soon, and ACLED light source modules are constantly improving. When it matures, it will seize the market in the form of simple, without transformer converters, electrolytic capacitors and too many peripheral components, and integrated packaging technology. The ACLED light source module has passed the embryonic stage and is in a period of rapid development. From its development trend, the ACLED light source module technology will inevitably become a leader in the development of the industry. Some people think that in the near future, more than 80% of the entire application market will use ACLED light source modules, which will change the pattern of the LED industry.

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