| 摘要 |
<p>PURPOSE:To prevent deterioration of the reliability by providing a metal layer being thicker than the height of a stripelike protrusion just above an active region, on a region other than the stripelike protrusion. CONSTITUTION:A metal layer 13 being thicker than the height of a stripelike protrusion 8 just above an active region is provided on a region other than the stripelike protrusion 8. Accordingly, the stripelike protrusion 8 just above a laser oscillation region does not come to touch a heat sink 14 directly and no stress is applied to the laser oscillation region, as the height of the metal layer 13 is higher than that of the stripelike protrusion 8 in the case of assembly by a junction-down method. This makes it possible to prevent deterioration of the reliability caused by assembly.</p> |
