| 摘要 |
PURPOSE:To obtain a low cost diamond heat sink which has a high performance by providing metal films insulated from each other on the upper and lower surfaces of a synthetic diamond. CONSTITUTION:Metal films 3, 3 insulated from each other are provided on the upper and lower surfaces of a synthetic diamond 4. As the diamond 4 that having, for example, thermal conductivity of 12watt/cm deg.C or higher under room temperature is used. For instance, 0.5 carat or diamond one synthesized by a temperature difference process is cut, polished, and a thin plate of approx. 4mm./5mmX0.3mm. is formed. A flat plate which has 0.3mm. thick is pickled and degreased with an organic solvent, titanium Ti is coated in a thickness of 500Angstrom on the upper and lower surfaces by ion plating, and gold Au is further coated in a thickness of 1.5mm.. Then, a diamond of thin plate is cut by a laser light in a square shape of 0.80X0.80mm. to obtain a heat sink. |
