Patent attributes
A vapor chamber includes a plate and a wick structure. The plate is provided therein with a working fluid, and the plate has a heated end and a condensed end. The wick structure includes a first wick portion adhered to be opposite to the heated end, a second wick portion overlapping on the first wick portion, and a third wick portion adhered on the rest portion of a chamber. The aperture diameter of the first wick portion is larger than that of the second wick portion, or the aperture density of the first wick portion is smaller than that of the second wick portion. The amount of working fluid attached to the second wick portion is smaller than that of the first wick portion. After heating, the working fluid attached to the second wick portion is vaporized more quickly.
