Pixel circuit

A display device comprising:

• a display region including a plurality of light-emitting diodes and a plurality of pixel circuits configured to control light emission of the plurality of light-emitting diodes;
• and
• a control circuit disposed outside the display region and configured to control the plurality of pixel circuits,
• wherein each of the plurality of pixel circuits includes:
• a constant current circuit;
• a pulse width modulation circuit;
• a current control switching transistor on a path of lighting current that is supplied from the constant current circuit and flows through the light-emitting diode;
• and
• a bypass switching transistor connected to an anode of the light-emitting diode, the bypass switching transistor being configured to be controlled synchronously with the current control switching transistor, and
• wherein the current control switching transistor is turned ON and then turned OFF by a first pulse signal based on a pulse control-signal from the pulse width modulation circuit and the bypass switching transistor is turned OFF and then turned ON by a second pulse signal based on the pulse control-signal from the pulse width modulation circuit to control an emission period of the light-emitting diode.