The difference between cob light source and led

The difference between cob light source and led

1. COB is one of the LED lighting fixtures. COB is the abbreviation of chip-on-board, which means that the chip is directly bound and packaged on the entire substrate, and N chips are integrated together for packaging, which is mainly used to solve the problem of low-power chips. The problem of manufacturing high-power LEDs, etc., can disperse the heat dissipation of the chip, improve the light efficiency, and at the same time improve the glare effect of the LED lamp; COB has high luminous flux density, less glare and soft light, and emits a uniformly distributed glossy surface. It is widely used in lamps such as bulbs, spotlights, downlights, fluorescent lamps and street lamps;

2. In addition to COB, there is also SMD in the LED lighting industry, which is the abbreviation of Surface Mounted Devices, which means surface mounted light-emitting diodes. High, precision, low false welding rate, light weight, small size and other characteristics;

3. There is also MCOB, that is, Muilti Chips On Board, which is a multi-faceted integrated packaging method. It is an expansion of the COB packaging process. MCOB packaging directly places the chip in the optical cup, and coats each single chip. The phosphor powder and the dispensing process are completed. The light of the LED chip is concentrated inside the cup. To let more light run out, the more ports that emit light, the higher the light effect. The efficiency of MCOB low-power chip packaging is generally higher than Efficiency of high-power chip packaging. It directly places the chip on the heat sink of the metal substrate, thereby shortening the heat dissipation path, reducing the thermal resistance, improving the heat dissipation effect, and effectively reducing the junction temperature of the light-emitting chip;

The above is the relevant introduction about the difference between cob light source and LED, I hope it can help you.