Integrated optical and electric circuit device.

摘要

(57) An integrated optical and electric circuit device in which a semiconductor light emitting device (3) is formed in a semiconductor integrated circuit substrate (1) on which circuit units (2) like logic circuits are integrated. The semiconductor light emitting device is activated by a common electric signal such as a clock signal to emit a common light signal. This common light signal transmits through the semiconductor substrate and reaches each circuit unit. A semiconductor light detecting device formed in the semiconductor integrated circuit substrate is coupled to each circuit unit. The semiconductor light detecting is responsive to the common light signal to bring the corresponding circuit unit into a common signal receiving state. With this arrangement, a metal interconnection for the common singal which is to be simultaneously distributed to the circuit units becomes unnecessary.