| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an LED mounting substrate capable of effectively diffusing the heat of an LED to the outside, a manufacturing method capable of easily manufacturing the LED mounting substrate at a low cost, and a drill capable of surely forming a recess with a roughly flat bottom surface on the LED mounting substrate. <P>SOLUTION: By turning a substrate material to a structure for which an organic layer 3 such as a prepreg sheet and a metal layer 4 for heat radiation such as aluminum or rolled copper are laminated, workability and operability are improved, heat conductivity is improved by the metal layer 4 for the heat radiation, and the heat is efficiently diffused to the outside. Also, a hole is provided on a part corresponding to the recess 4 of the metal layer 4 for the heat radiation, the metal layer 4 for the heat radiation is prevented from being exposed to the wall surface of the recess 5, and the short-circuit of an electrode is prevented. Also, by using a drill bit having a flat part on the distal end, the recess with the roughly flat bottom surface is directly formed on a substrate member 2 for which the metal layer 4 for the heat radiation and the organic layer 3 are laminated. <P>COPYRIGHT: (C)2007,JPO&INPIT |
