Pixel circuit, display device including the same and electronic device including the same

Abstract

A pixel circuit includes a light emitter including an emission driving transistor to output a driving current based on a data voltage, a write transistor to apply the data voltage to the emission driving transistor in response to a write gate signal, and a light-emitting element to emit light based on the driving current, and a light sensor to sense the light, and including a sensing driving transistor including a first control electrode for receiving a reset voltage and a sensing voltage, and a second control electrode for receiving an adjustable photodiode voltage, for generating a sensing current in response to the sensing voltage, a sensing initialization transistor to apply the reset voltage to the first control electrode in response to a photo initialization gate signal, and a sensing output transistor to apply the sensing current to a sensing line in response to an output gate signal.