| 摘要 |
<p>PURPOSE:To improve heat dissipation characteristics and maintain dielectric strength, by using an Al plate on which a ceramics film is formed by flame spray coating of ceramics on a plate surface. CONSTITUTION:Plasma spray coating, for example, of Al2O3 powder of 5-25 mum is performed on an Al plate 1 to form on Al2O3 film 2, for example, of 100mum or 200mum or 500mum thick. Further, an electrolytic copper foil of about 35mum thick is bonded thereon, which is subjected to an etching to form a circuit pattern. As the result, it can be confirmed that the plate wherein a film is formed by plasma spray coating of ceramics(Al2O3) powder on the Al plate is superior to a ceramic plate(SiO2) in heat dissipation characteristics. The results of measuring the dielectric strength of the substrate sufficiently satisfy the required value to the substrate for LWD printer. Further, an Al plate is used as a main material, so that the substrate for LED can be manufacture at a low cost.</p> |
