One-piece formed metal heat dissipation plate and heat dissipation device having same

A one-piece formed metal heat dissipation plate, comprising:

• a substrate comprising a first surface and a second surface arranged opposite to each other;
• and
• a plurality of heat dissipation strips arranged in a longitudinal direction;
• wherein each of the heat dissipation strips comprises two connection ends connected to the first surface, at least two ridge portions arranged between the two connection ends and located over the substrate, and a plurality of concave-convex tooth portions formed on at least one side of at least one of the ridge portions, and a cut slot is defined in the substrate corresponding to the at least two ridge portions of each of the heat dissipation strips, and the cut slot penetrates the first surface and the second surface;
• wherein the substrate further comprises a plurality of dividing strips each disposed adjacent to and extending along the respective cut slots and located below the ridge portions, and a plurality of heat dissipation fins arranged on the dividing strips and adjacent to the respective cut slots, wherein the first surface is connected between adjacent ones of the heat dissipation fins arranged in a direction along a respective one of the cut slots.