COB light source can be simply understood as a high-power integrated surface light source, and the light-emitting area and overall size of the light source can be designed according to the product shape and structure.
Features of cob light source
cheap and convenient
Electrical stability, circuit design, optical design, heat dissipation design scientific and reasonable;
The use of heat sink technology ensures that the LED has an industry-leading thermal lumen maintenance rate (95%).
It is convenient for the secondary optical matching of the product and improves the lighting quality. ;
High color rendering, uniform luminescence, no light spots, healthy and environmentally friendly.
The installation is simple, the use is convenient, the difficulty of lamp design is reduced, and the cost of lamp processing and subsequent maintenance is saved.
The production process of cob light source
The COB chip on board (ChipOnBoard, COB) process is firstly to cover the placement point of the silicon wafer with thermally conductive epoxy resin (generally silver-doped epoxy resin) on the surface of the aluminum substrate, and then place the silicon wafer directly on the surface of the substrate, heat treatment Until the silicon wafer is firmly fixed on the substrate, then wire bonding is used to directly establish an electrical connection between the silicon wafer and the substrate.
Advantages and disadvantages of high power cob light source
advantage:
Compared with discrete LED devices, COB light source modules can save the primary packaging cost, light engine module manufacturing cost and secondary light distribution cost of LEDs in application. In the lighting system with the same function, the actual calculation can reduce the cost of the light source by about 30%, which is of great significance for the application and promotion of semiconductor lighting. In terms of performance, through reasonable design and micro-lens molding, the COB light source module can effectively avoid the drawbacks such as point light and glare existing in the combination of discrete light source devices; it can also be added by adding an appropriate red chip combination. On the premise of life, it can effectively improve the color rendering of the light source. In 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 terms of production, the existing process technology and equipment can fully support the large-scale manufacturing of high-yield COB light source modules. With the expansion of the LED lighting market, the demand for lamps is growing rapidly. We can gradually form a series of mainstream products of COB light source modules according to the needs of different lighting applications for mass production.
shortcoming:
COB LEDs require the use of more materials, such as phosphors and silica gel, in manufacturing, and there is no cost advantage. In addition, the LED series-parallel mode of COB has been fixed at the factory. Unlike single-chip high-power LEDs, the number and color can be freely matched, and the color temperature and electrical parameters can be adjusted.
Application of high power cob light source
The LED flat light source (COB flat light source) is energy-saving and environmentally friendly, and the multi-core integrated package is packaged on an aluminum substrate or a ceramic substrate. Its excellent performance such as low thermal resistance, good heat dissipation effect, low cost, simple and convenient installation, uniform and soft light without spots, etc., is favored by household and commercial decorative lighting.
Mainly used in clothing spotlights, counter lighting, jewelry lighting, medical instrument lighting, home decoration lighting and other lighting that requires soft and enjoyable light sources. LED side light source module, LED injection molding module, LED backlight module, LED waterproof module, LED non-proof module and LED module.
Application sites: shopping malls, indoors, clothing, cabinets, living rooms, aisles, hotels, bedrooms, kitchens, etc.
Application lamps: T5/T8/T10 fluorescent tubes, bulb lamps, down lamps, wall lamps, ceiling lamps, Par lamps, ceiling lamps, reading lamps, spot lamps, jewelry lamps, plant lamps, table lamps, etc.COB light source is a high-efficiency integrated surface light source technology that directly attaches LED chips to a mirror metal substrate with high reflectivity. This technology eliminates the concept of brackets, no electroplating, no reflow soldering, and no patch process, so the process is reduced by nearly three points One, the cost is also saved by one third.
COB light source can be simply understood as a high-power integrated surface light source, and the light-emitting area and overall size of the light source can be designed according to the product shape and structure.
Features of cob light source
cheap and convenient
Electrical stability, circuit design, optical design, heat dissipation design scientific and reasonable;
The use of heat sink technology ensures that the LED has an industry-leading thermal lumen maintenance rate (95%).
It is convenient for the secondary optical matching of the product and improves the lighting quality. ;
High color rendering, uniform luminescence, no light spots, healthy and environmentally friendly.
The installation is simple, the use is convenient, the difficulty of lamp design is reduced, and the cost of lamp processing and subsequent maintenance is saved.
The production process of cob light source
The COB chip on board (ChipOnBoard, COB) process is firstly to cover the placement point of the silicon wafer with thermally conductive epoxy resin (generally silver-doped epoxy resin) on the surface of the aluminum substrate, and then place the silicon wafer directly on the surface of the substrate, heat treatment Until the silicon wafer is firmly fixed on the substrate, then wire bonding is used to directly establish an electrical connection between the silicon wafer and the substrate.
Advantages and disadvantages of high power cob light source
advantage:
Compared with discrete LED devices, COB light source modules can save the primary packaging cost, light engine module manufacturing cost and secondary light distribution cost of LEDs in application. In the lighting system with the same function, the actual calculation can reduce the cost of the light source by about 30%, which is of great significance for the application and promotion of semiconductor lighting. In terms of performance, through reasonable design and micro-lens molding, the COB light source module can effectively avoid the drawbacks such as point light and glare existing in the combination of discrete light source devices; it can also be added by adding an appropriate red chip combination. On the premise of life, it can effectively improve the color rendering of the light source. In 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 terms of production, the existing process technology and equipment can fully support the large-scale manufacturing of high-yield COB light source modules. With the expansion of the LED lighting market, the demand for lamps is growing rapidly. We can gradually form a series of mainstream products of COB light source modules according to the needs of different lighting applications for mass production.
shortcoming:
COB LEDs require the use of more materials, such as phosphors and silica gel, in manufacturing, and there is no cost advantage. In addition, the LED series-parallel mode of COB has been fixed at the factory. Unlike single-chip high-power LEDs, the number and color can be freely matched, and the color temperature and electrical parameters can be adjusted.
Application of high power cob light source
The LED flat light source (COB flat light source) is energy-saving and environmentally friendly, and the multi-core integrated package is packaged on an aluminum substrate or a ceramic substrate. Its excellent performance such as low thermal resistance, good heat dissipation effect, low cost, simple and convenient installation, uniform and soft light without spots, etc., is favored by household and commercial decorative lighting.
Mainly used in clothing spotlights, counter lighting, jewelry lighting, medical instrument lighting, home decoration lighting, and other lighting that requires soft and enjoyable light sources. LED sidelight source module, LED injection molding module, LED backlight module, LED waterproof module, LED non-proof module, and LED module.
Application sites: shopping malls, indoors, clothing, cabinets, living rooms, aisles, hotels, bedrooms, kitchens, etc.
Supporting lamp lens: T5/T8/T10 fluorescent tube, bulb lamp, downlight lens, wall lamp lens, ceiling lamp, Par lamp lens, ceiling lamp, reading lamp, spotlight lens, jewelry lamp lens, plant lamp, table lamp, etc.