Semiconductor integrated circuit

Abstract

Abstract PURPOSE:To obtain inexpensively a semiconductor integrated circuit with high workability by supplying DC power for operating the circuit in the IC chip by a photocoupling type and introducing an electric signal in the IC chip externally thereby. CONSTITUTION:When a light is irradiated from a light emitting element 11 on a substrate 10 to a solar battery 8, the solar battery 8 generates a DC voltage and supplies it into a semiconductor integrated circuit in an IC chip 7 to allow the IC chip 7 to operate as predetermined. An electric signal outputted from the IC chip 7 in operation irradiates the light emitting elements 9a-9e on the IC chip 7 equivalent in magnitude to the electric signal. The lights from these elements are received by photoreceptors 12a-12e. Thus, electric signals substantially equal to the electric signals of the IC chip 7 are generated at the photoreceptor group 12 on the substrate 10 to lead out the electric signals in the IC chip 7 externally.

Inventors

• 👤 Satoshi Iwagishi

Bibliographic Details