| 摘要 |
PURPOSE:To improve yield, and to improve optical characteristics of a photodetector by placing heat curable resin on the surface of a package, heating it to melt the resin, and filling an uneven surface to finish it in a mirror state. CONSTITUTION:After a photodiode with a P-N junction is manufactured, the photodiode 3 is molded with epoxy resin together with an electrode terminal 5 and sealed in a package 2. Then, the surface of the package is coated with heat curable resin 7 having 0.1mm of thickness, and the heat curable resin is heated while being pressurized by a metal plate 8 in which the surface 9 is mirror finished. Thus, a photodetector having a flat surface in which a damage, bubbles, steps are filled with the resin 7 can be obtained.
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