Patent ID: 9538673
Date: 2017-01-03
CPC Classifications: G03F,G06F,H05K

Claim:
1. An electronic device comprising: a housing; a mother board received in the housing, and a plurality of heat-generating members received in the housing; and wherein a dissipation area is formed in the housing for dissipating heat from the plurality of heat-generating members, and a plurality of dissipation holes are defined in an outer surface of the dissipation area, and each dissipation hole is in a nanometer scale, the plurality of dissipation holes are blind holes, the diameter of each dissipation hole to a depth of each dissipation hole is in a range from about 1:2 to about 1:10, the plurality of dissipation holes extend from the outer surface toward the plurality of heat-generating members, a cross-sectional shape of each dissipation hole is substantially perpendicular to an axis of the dissipation hole, and a plurality of echelon protrude from an edge of a substantially circular shape dissipation area.