COB is easy to achieve dimming, high brightness and other characteristics, can solve the problem of chromatic aberration, multiple side spots, etc., and has been widely used in the field of hotel and commercial store lighting. COB packaging has gradually become the mainstream of the market, and various domestic and international manufacturers have successively launched a variety of new COB products.
With the gradual maturity of COB technology, in the fierce market, some domestic manufacturers of COB packaging devices can compete with foreign companies in performance.
On the technical side, the domestic LED package giants have never stopped the innovation of packaging technology and packaging technology. Recently, a two-color COB light source with uniform cross-distribution composite package has begun to be applied in the market, called CCOB.
Why is it called CCOB? Among them, the first "C" contains the meaning of Compound & Cross:
1. Cross: cross (different color temperature light-emitting chips evenly distributed)
2. Compound: composite (using a flip chip structure, a bare chip unit and at least one wrapped chip unit formed by covering a surface of the bare chip unit with a first phosphor layer, and then covering the above by a second phosphor layer) Chip units make them combine to form different color temperatures)
simply put:
CCOB is a two-color COB source with a uniform cross-distribution composite package. Adjust the brightness ratio of two different light color chips to realize the change of COB light color.
At present, all major light source brands have launched two-color COB, we have made a two-color COB feature comparison:
In order to understand the dimming color performance of CCOB in more detail, the inventor of Guangzhou Tianxin Optoelectronics provided samples for evaluation.
The ceiling light with a CCOB source is 135mm in diameter and the light is lens + reflector.
â–² Schematic diagram of the lamp.
Light source size
â–²COB light source diameter is close to 14mm
Through the fluorescent glue, it can be seen that the CCOB lamp beads encapsulated in the COB light source are yellow and white, 22 yellow beads (low color temperature) and 22 white beads (high color temperature), arranged at intervals.
â–² manufacturers provide high-definition photos of COB light source
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