Driver integrated circuit for external compensation, display device including the same, and data correction method of display device

A display device comprising:

• a display panel including a plurality of pixels and data lines respectively connected to the plurality of pixels;
• and
• a driver integrated circuit connected to the display panel through the data lines and comprises:
• a voltage generator generating a sensing data voltage;
• a calibration circuit decoding N-bit calibration data input from the voltage generator and generating at least one calibration voltage, where N is a positive integer;
• a sensor sampling a signal output from a pixel corresponding to the sensing data voltage in a sensing mode for sensing electrical characteristics of the pixel;
• an analog-to-digital converter converting an analog signal sampled by the sensor into a digital signal, wherein output characteristics of the analog-to-digital converter is sensed by the sensor sampling the at least one calibration voltage in a calibration mode,
• wherein the sensor includes a hybrid sensing unit capable of performing both a current sensing operation and a voltage sensing operation, and
• wherein the hybrid sensing unit is implemented as a current sensing unit capable of directly sensing a driving current flowing in the pixel in the sensing mode, and the hybrid sensing unit is implemented as a voltage sensing unit capable of sensing the calibration voltage in the calibration mode, and
• wherein the hybrid sensing unit comprises:
• an amplifier having a non-inverting input terminal, an inverting input terminal, and an output terminal;
• a first sensing switch connected between a sensing channel terminal connected to the pixel and the non-inverting input terminal of the amplifier;
• a second sensing switch connected between an output terminal of a reference voltage and the non-inverting input terminal of the amplifier;
• a third sensing switch connected between the sensing channel terminal and the inverting input terminal of the amplifier;
• and
• a fourth sensing switch and a feedback capacitor connected in parallel between the inverting input terminal and the output terminal of the amplifier.