As we know, most of COB encapsulation technologies, including the one of Japan, are based on the encapsulation of the aluminum base, which assemble some chips to be encapsulated on the aluminum base. This is what we call the COB technology. The substrate of the aluminum is copper foil, which can only well conduct electric but it can’t process optical processing very well. MCOB technology, quite distinct from the traditional technology, puts the chips in the optical cups according to optics. It aims to make not only one cup, but many cups. It derives from a simple principle, i.e., the light of LED is from the chip itself, which means we need many angles to let out more light. The light efficiency can be improved if we have more light exits. In any cases, the light efficiency of low power’s chips can be at least 15% higher than high power’s chips. The reason is that the chips of high power are bigger and they only have four light exits. However, we can have as many as sixteen small chips on a board and 4*16 light exits. For this reason, MCOB is not only a cup, the purpose of many cups in MCOB is higher lighting efficiency. Just because of many cups, comparing with the ordinary COB tech, products adopting MCOB tech have much higher lighting efficiency.
Multiple Cups/Chip on Board ( MCOB ) LED Lighting technology
As we know, most of COB encapsulation technologies, including the one of Japan, are based on the encapsulation of the aluminum base, which assemble some chips to be encapsulated on the aluminum base. This is what we call the COB technology. The substrate of the aluminum is copper foil, which can only well conduct electric but it can't process optical processing very well.MCOB LED Light technology, quite distinct from the traditional technology
- puts the chips in the optical cups according to optics.
- It aims to make not only one cup, but many cups. It derives from a simple principle,
- i.e., the light of LED is from the chip itself, which means we need many angles to let out more light.
- The light efficacy can be improved if we have more light exits. In any cases, the light efficacy of low poweres chips can be at least 15% higher than high poweres chips.
- The reason is that the chips of high power are bigger and they only have four light exits.
- However, we can have as many as sixteen small chips on a board and 4*16 light exits.
For this reason
MCOB is not only a cup, the purpose of many cups in MCOB is higher light efficacy.
Just because of many cups, comparing with the ordinary COB tech, products adopting MCOB tech have much higher light efficacy.
COB LED Light Technology - Chip on Board LEDs
Chip on Board ( COB ) LED Lighting technology
The greatest power densities on the smallest space are often the basis for unique selling points of various products on the market. These criteria can be realized by the ( Chip on Board ) COB LEDs technology (Chip On Board). Direct contacting of the semiconductors (LEDs) on PCBs allows for optimal thermal management, high packaging density and thus long-lasting and high-performance COB LED modules.
( Chip on Board ) COB LED Light technology
With this technology, the LED chips are in the form of a semiconductor chip, which is neither encased nor connected. The semiconductor chip is described as a "Die". This LED chip is processed by means of a special procedure which is called "Die Bonding". Here the individual chips are placed on the PCB and using the Wire Bonding method, connected to the contact surface of the PCB, which are described as "Pads". Gold wires in the micrometer range are used for contacting. TheCOB LED light technology allows for virtually limitless freedom of scope for the PCBs and thus serves as the basis for totally unique LED solutions.
 Dimmer LED Downlight COB LED Spotlight |
No comments:
Post a Comment