SMD COB high-power LED, what are their advantages and disadvantages?
Traditional LED practices are: LED light source, discrete device, MCPCB light source module, LED lamp, mainly because there is no suitable core light source components, but not only time-consuming, but also higher cost. In fact, we can divide the "discrete devices, LED light source MCPCB light source module directly to the LED chip" be made one, integrated in the MCPCB made COB light source module, take the COB light source module - LED lamp "route, not only saves time and labor cost but also can save the device package.
The COB of LED can be made very uniform, so it can simplify and reduce the light loss when the lamp matches the light. In the application, COB LED lamp manufacturing can do light, rather than LED that is a point source, due to reduced loss of photometric light distribution, so the theory can achieve higher efficiency.But COB's LED requires more materials in manufacturing, such as phosphors and silica gel, and has no advantage over cost. In addition, the LED COB string and the way the factory has been fixed, not as single power LED, that can freely mix the quantity and color, adjust the color temperature and electrical parameters.
Compared with discrete LED devices, the COB light source module can save LED primary packaging cost, manufacturing cost of light engine modules and the cost of two optical distribution in applications. In the lighting system with the same function, the actual measurement can reduce the cost of light sources about 30%, which is of great significance for the application and promotion of semiconductor lighting. In the performance, through reasonable design and micro lens molding, COB light source module can effectively avoid the existence of discrete light source device combination of light, glare and other defects; can also add the appropriate combination of red chip, without significantly reduced the efficiency of light source and life, effectively improve the color of the light source. In the application, the COB light source module can make the installation and production of the lighting factory simpler and more convenient, and effectively reduce the application cost. In production, large-scale manufacturing technology and the existing equipment can support COB high yields of the light source module. With the development of LED lighting market, the demand of lamps and lanterns is increasing rapidly. We can gradually form a series of COB light source module mainstream products according to the demand of different lamps and lanterns, so as to produce on a large scale.
LED has two separate and integrated packages. LED discrete devices belong to the traditional packaging, widely used in various related fields, after more than 40 years of development, has formed a series of mainstream product form. Chip integrated COB module is now a personalized package, mainly for some cases of application products and design and production, has not yet formed a mainstream product form.
