JPS6427290A - Optical semiconductor device - Google Patents

Abstract

PURPOSE:To prevent complication of operations and deterioration of yield, by providing a light-emitting element having a mounting section on which a light-emitting reference section and an identifying means in a particular positional relation. CONSTITUTION:A plurality of identifying means 5 are provided on a surface electrode of a light-emitting element 1 at positions corresponding to a light-emitting region 3. More preferably, recesses as the identifying means are provided not at the center of the element but near the light-emitting end face. A light-emitting reference section of a stem is positioned in a predetermined positional relation with the optical axis. Further, a cross- or T-shaped identifying means 9 associated with the light-emitting reference section is provided also on a mounting section. Alternatively, the identifying means in the light-emitting region on the surface electrode may be placed at a position deflected from the center of the light emitting element toward one end thereof. Even if something is interposed between the light-emitting element and the mounting face, or a mounting frame is deformed before molding the element can be positioned correctly. Further, wiring operations are facilitated since wire bonding regions are clear on the element, and desirable optical output can be obtained since current can be supplied efficiently to the light emitting regions. Thus, the mounting operation registering the optical axis can be carried out easily while the yield can be improved.