| 摘要 |
<p>Provided are a heat spreader (1), which can grasp the position of a backing intuitively from the appearance thereof, and a manufacturing method which can manufacture the heat spreader at less steps while preventing the displacement of the backing. The heat spreader (1) is formed in a flat plate shape, in which a flat-shaped backing (2) is covered at its planar outer periphery with a frame (3) of a metal or an alloy and at its surface (4) and back (5) with coating layers (6 and 7) of a metal or an alloy, and in which at least one of a surface (11) and a back (12) has grooves (13 and 14) formed in the planar direction along the outer edge of the internal backing (2). The manufacturing method either fills a mixture (25) for the backing (2) in the region, which is enclosed by the frame (3) and by thin sheets (22 and 26) to be fitted in the ring of the frame (3) to form the coating layers (6 and 7), or fits the backing (2) in that region, and performs a compression-molding treatment. After this, the method performs a sintering treatment at the metal or alloy melting point or lower.</p> |
