Sanyo Electric Co., Ltd.

Kiyoshi Takada

Tsutomu Ishikawa

Hiroshi Inoguchi

Satoru Sekiguchi

Hiroshi Kobori

Isao Ochiai

Masashi Arai

Kiyokazu Kamado

Toshiyuki Take

Hiroki Seyama

Hideo Kunio

Hideo Kunii

In a data transmission, a driving circuit 14 drives a light receiving element 15 in accordance with data from an external control circuit. In accordance with IrDA or remote control communication, driving capability of the driving circuit is changed. In a data reception, received data is transferred to a first or a second signal processing circuit in accordance with the IrDA or remote control communication and processed according to each communication format. In this configuration, a single light emitting or light receiving element permits data communication in different kinds of data communication formats.

Optical semiconductor device

A mold,for molding semiconductor chips,and,serving as a light emitting element and a light receiving element, respectively, is made of a material capable of transmitting light. A groove,is formed on the region where light is emitted from and incident on the semiconductor chips so that it constitutes a reflecting face. Thus, the light is emitted and incident through the side E of the mold. In this configuration, the outer size of the light receiving element or light emitting element can be minimized, and the module provided with these semiconductor chips can also be miniaturized.

Optical semiconductor device and optical semiconductor module equipped with the same

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Osaka, Japan

Kiyoshi Takada