INTEGRATED HEAT SPREADER
A heat spreader includes a top surface opposite a bottom surface, a first cavity formed within and extending upwardly from the bottom surface, the first cavity having a depth, a second cavity formed within and extending upwardly from the bottom surface, the second cavity having a depth, and wherein the first depth is greater than the second depth.
1 . A heat spreader, comprising:
a top surface opposite a bottom surface;
a first cavity formed within and extending upwardly from the bottom surface, the first cavity having a depth;
a second cavity formed within and extending upwardly from the bottom surface, the second cavity having a depth; and
wherein the first depth is greater than the second depth.
2 . The heat spreader of claim 1 , wherein the heat spreader is defined by a generally rectangular shape having at least four sides.
3 . The heat spreader of claim 2 , wherein the heat spreader includes an outer periphery extending around the first and second cavity, and wherein at least two of the sides of the heat spreader include a raised surface extending at least upwardly from the outer periphery of the heat spreader.
4 . The heat spreader of claim 3 , wherein the raised surface defines a thickness that is less than an overall thickness of the heat spreader.
5 . The heat spreader of claim 3 , wherein the outer periphery defines a thickness that is less than an overall thickness of the heat spreader.
6 . The heat spreader of claim 1 , wherein the heat spreader is composed of copper.
7 . The heat spreader of claim 1 , wherein the first cavity is defined by a bottom surface and at least four sides and wherein the first cavity includes a curved surface extending between the bottom surface and the at least four sides.
8 . The heat spreader of claim 1 , wherein the first cavity is defined by a non-rectangular shape and the second cavity is defined by a generally rectangular shape.
9 . The heat spreader of claim 1 , wherein the first cavity has a depth of approximately 3.0 mm and the second cavity has a depth of approximately 1.5 mm.
10 . The heat spreader of claim 1 , wherein an inclined surface extends between and couples the first and the second cavity.
11 . A heat spreader, comprising:
a top surface opposite a bottom surface;
a first cavity formed within and extending upwardly from the bottom surface, the first cavity having a first depth;
a second cavity formed within and extending upwardly from the bottom surface, the second cavity having a second depth;
an outer periphery extending vertically upward from the bottom surface of the heat spreader and extending around at least a portion of the first cavity and at least a portion of the second cavity; and
wherein the first depth of the first cavity is greater than the second depth of the second cavity.
12 . The heat spreader of claim 11 , wherein the heat spreader includes an inclined surface extending between and coupling the first cavity and the second cavity.
13 . The heat spreader of claim 11 , wherein the depth of the first cavity is approximately 3.0 mm and the depth of the second cavity is approximately 1.5 mm.
14 . The heat spreader of claim 11 , wherein the outer periphery includes a raised surface extending upwardly and outwardly from the outer periphery.
15 . The heat spreader of claim 14 , wherein the raised surface defines a thickness that is less than a thickness of the heat spreader.
16 . A method of forming a heat spreader, the method comprising:
stamping a central surface of a sheet of material with a die and a press of a stamping system to transfer material outward from a bottom surface of the sheet of material to form a first cavity;
stamping the first cavity and a surface adjacent the first surface with a second die and a second press of a second stamping system to transfer material outward from a bottom surface of the sheet of material to form a second cavity; and
holding the material of the first cavity and the second cavity constant such that a depth of the first cavity and the second cavity remains constant; and
during the step of holding the material, stamping the outer periphery with a third stamping system to transfer material outward to form a raised surface extending from the outer periphery.
17 . The method of claim 16 , wherein the depth of the first cavity is greater than the depth of the second cavity.
18 . The method of claim 16 , wherein the heat spreader includes at least four sides and the raised surface extends along at least two of the four sides.
19 . The method of claim 16 , wherein the outer periphery has at a thickness that is less than an overall thickness of the heat spreader.
20 . The method of claim 19 , wherein the raised surface extends vertically upward from a top surface of the outer periphery.