Pixel circuit and display apparatus comprising the same

A display apparatus comprising:

• a display panel in which a plurality of data lines, a plurality of gate lines intersecting the data lines, a plurality of power lines, and a plurality of pixel circuits connected to the data lines, the gate lines, and the power lines are arranged;
• a data driver configured to supply a data voltage of pixel data to the data lines;
• and
• a gate driver configured to supply a gate signal to the gate lines,
• wherein each of the plurality of pixel circuits includes:
• a first node connected to a VDD line to which a first constant voltage is configured to be applied;
• a third node connected to a fourth node connected to a light-emitting element;
• a fourth-first switch element arranged between the VDD line and the first node;
• and
• a fourth-second switch element arranged between the VDD line and the first node, and
• wherein the pixel circuit is configured to repeatedly performs an initialization phase, a sampling phase, an addressing phase, and an emission phase in a driving step, and
• the fourth-first switch element and the fourth-second switch element are configured to be PWM-driven in the emission phase.