LEAD FRAME FOR OPTICAL SEMICONDUCTOR DEVICE, MANUFACTURING METHOD OF LEAD FRAME FOR OPTICAL SEMICONDUCTOR DEVICE, AND OPTICAL SEMICONDUCTOR DEVICE

摘要

Provided is a lead frame for an optical semiconductor device, comprising a conductive base (1) on which has been formed a layer (2) comprising silver or a silver alloy, wherein an outer layer of the layer comprising the silver or silver alloy comprises a metal-oxide layer (3) of a metal other than silver, the metal-oxide layer (3) is colorless and transparent or takes on a silver-white color, and the thickness is at least 0.001 µm and at most 0.2 µm. Also provided are a manufacturing method for the same, and optical semiconductor device using the same.