Vapor chamber and dendritic wick structure thereof

A vapor chamber comprising:

• a vapor chamber body, comprising a hollow shell and a capillary wick layer covered on an inner wall of the hollow shell;
• multiple dendritic wick structures, each dendritic wick structure comprising a capillary base and multiple capillary branches, a side of the capillary base being sintered and connected to the capillary wick layer and another side comprising a convex curved portion, and the multiple capillary branches being extended from and formed as one piece with the convex curved portion;
• and
• a working fluid, filled in the hollow shell;
• wherein the side of the capillary base, which is connected to the capillary wick layer, is disposed with a concave curved portion formed inside the convex curved portion and an annular segment formed on an outer periphery of the concave curved portion, the annular segment is sintered and connected to the capillary wick layer, and the capillary base and the lower capillary wick layer are connected by the annular segment to make the concave curved portion wrapped to be a closed space formed between the capillary base and the capillary wick layer.