CCI vapor chamber consists of a sealed container which is made of two plates and one vacuum tube, some wick formed inside of the container, and a small amount of working fluid that is in equilibrium with its own vapor.

As the heat is applied to heating plate of the vapor chamber (evaporator), the working fluid vaporizes and the vapor spreads to the entire inner volume and condenses over cooling plate (condenser). The condensate is returned to the evaporator via capillary forces developed in the wick.

Vapor chamber has advantage of thermal diffusion and can get uniform temperature distribution than heat pipe. And there is no constraint on shape than heat pipe. For the reason, vapor chamber is used on various fields.