The difference between cob light source and led
1. COB is one of the LED lighting lamps. 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. Meanwhile, the glare effect of LED lamps can be improved. COB has a high density of light flux, less dazzling light and soft light, and sends out a uniformly distributed light surface. At present, cob is widely used in bulbs, spotlights, downlights, fluorescent lamps and street lamps, and can be used in china cob led strip to buy.
2. In addition to COB, there is also SMD in the LED lighting industry, which is the short for Surface Mounted Devices. SMD has a large light emitting angle and can reach 120-160 degrees. Small size and other characteristics;
3. mCOB, also known as Muilti Chips On Board, is an extension of COB packaging technology. In MCOB packaging, chips are directly placed in optical cups, and phosphors are coated on each single chip and glue is dispensed. LED chip light is concentrated on the inside of the cup, to let more light run out. The more light outlet, the higher the light efficiency. MCOB low-power chip packaging efficiency is generally higher than that of high-power chip packaging efficiency. It directly placed 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 luminescent chip;