Optical control switch and electronic device comprising same

An optically-controlled switch comprising:

• A circuit board comprising:
• A substrate formed of photoconductive material and including a photoconductive switching region;
• A transmission line, wherein
• The transmission line comprises a first conductive layer disposed on the substrate to form a signal line of the transmission line, the first conductive layer including a gap facing the photoconductive switching region, a first dielectric layer formed on the first conductive layer, and a second conductive layer comprising a pattern including a second gap facing the photoconductive switching region;
• and
• A laser formed on the circuit board, the laser configured to emit light toward the photoconductive switching region;
• and
• Wherein a light emitted by the laser passes through the gap facing the photoconductive switching region and the second gap facing the photoconductive switching region,
• Wherein a thickness of the substrate does not exceed a depth of the photoconductive switching region, and
• Wherein the depth of the photoconductive switching region is a sum of a carrier diffusion length in a semiconductor material forming the substrate and a penetration depth determined based on an operating frequency of the laser.