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 whole substrate, and N chips are integrated together for packaging. It is mainly used to solve the problems of manufacturing high-power LED with low-power chips, which can disperse the heat dissipation of the chip, improve the light efficiency, and improve the glare effect of LED lamps; The density of cob luminous flux is high, the glare is low, and the light is soft. It emits a uniformly distributed light surface. At present, it is widely used in bulbs, spotlights, downlights, fluorescent lamps, street lamps and other lamps;
2. In addition to cob, there is SMD in the LED lighting industry, which is the abbreviation of surface mounted devices, which means that surface mounted light-emitting diodes have a large light-emitting angle, which can reach 120-160 degrees. Compared with the early plug-in packaging, SMD has the characteristics of high efficiency, good precision, low false soldering rate, light weight and small volume;
3. In addition, mcob, that is, muilti chips on board, that is, multi surface integrated packaging, is an expansion of cob packaging process. Mcob packaging directly puts chips in optical cups, coating phosphors on each single chip and completing dispensing and other processes LED chip light is concentrated in the cup. To make more light come out, the more light outlets, the higher the light efficiency. The efficiency of mcob low-power chip packaging is generally higher than that of high-power chip packaging. It directly places the chip on the metal substrate heat sink, so as to shorten the heat dissipation path, reduce the thermal resistance, improve the heat dissipation effect, and effectively reduce the junction temperature of the light-emitting chip.
Post time: Jun-23-2022
