Display apparatus

A display apparatus comprising:

• a plurality of pixels configured to receive data voltages in response to gate signals;
• a drive circuit configured to generate a power voltage and a control signal;
• a gate driver configured to operate with the power voltage, generate the gate signals and a dummy gate signal in response to the control signal, and supply the dummy gate signal to the drive circuit;
• and
• a data driver configured to operate with the power voltage and generate the data voltages in response to the control signal,
• wherein the drive circuit is configured to:
• measure a temperature of the drive circuit, and
• measure a voltage and a current at an output node of the drive circuit that outputs the power voltage to the gate driver and the data driver,
• wherein the measured temperature, measured voltage, measured current, and the dummy gate signal are stored in the drive circuit in a predetermined order,
• wherein the drive circuit comprises:
• a timing controller configured to generate the control signal;
• a power generator configured to generate the power voltage and receive the dummy gate signal;
• a printed circuit board on which the timing controller and the power generator are mounted;
• a first sensor part configured to measure the temperature of the drive circuit from the printed circuit board and provide the measured temperature as a first sensing signal to the power generator;
• and
• a voltage-current measurer configured to measure the voltage and the current at an output node of the power generator outputting the power voltage, and provide the measured voltage as a second sensing signal and the measured current as a third sensing signal to the power generator,
• wherein the power generator is configured to store the first to third sensing signals, measure a temperature of the power generator, store the measured temperature of the power generator as a fourth sensing signal, and store the dummy gate signal as a fifth sensing signal.