The difference between ws2812 and ws2812b

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APA104/APA102 built in ic led chip is encapsulated by us , and ws2812b , ws2812 is not very popular as before , actually so Many people even don't know  the difference between ws2812b and ws2812. So let us to tell you the difference about it.
Frankly speaking, both of ws2812b and ws2812 is adopted build in ic . use ws2811 ic to be the driver So what is the difference ? WS2812b have 4 pins, but ws2812 have 6 pins, 
the following picture is about them . 


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