LED fixed crystal placement.P2.5 soft LED module

　　COB fixed crystal placement method: RGB chips are placed in a straight line, and the lens above the chip is a smooth curved surface. The lens has a good refraction effect on light. When the three color light passes through the lens, it will refract, making the three color light mix more evenly, resulting in good color mixing effect and uniform light spot, giving a good visual effect and more realistic display effect. However, SMD full color does not have this characteristic, Because the top of SMD is a flat surface, the refractive effect is average, so the color matching effect is worse than that of COB. Below is a comparison of the two light distribution curves, which can clearly see the advantages of COB full color:

　　COB Full Color R/G/B Light Distribution Curve SMD Full Color R/G/B Light Distribution Curve

　　From the light distribution curve, it can be seen that the COB full color curve has good consistency among the three, while the SMD full color curve has poor consistency. There is a significant separation between the red light curve and the blue/green light curve, so the effect is worse than that of COB full color.

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