Display driver including crack resistance measurement circuit and method of measuring crack of display panel

A display driver, comprising:

• a crack resistance measurement circuit which is connected to a crack resistance circuit of a display panel, and is configured to measure a crack resistance of the crack resistance circuit to determine whether a crack has occurred in the display panel;
• and
• a timing controller configured to output a clock signal to the crack resistance measurement circuit,
• wherein the crack resistance measurement circuit is configured to compare a magnitude of the crack resistance with a magnitude of a reference resistance according to the clock signal and measure the crack resistance of the crack resistance circuit based on a resistance comparison result,
• wherein the crack resistance measurement circuit includes:
• a reference resistance generation circuit configured to generate the reference resistance;
• a comparator configured to compare the magnitude of the crack resistance with the magnitude of the reference resistance;
• and
• a circuit controller configured to determine that the crack has occurred in the display panel based on the resistance comparison result or output a reference resistance control signal for controlling the magnitude of the reference resistance to the reference resistance generation circuit, wherein the circuit controller compares the reference resistance with a maximum reference resistance when the crack resistance is greater than the reference resistance and determines that the crack has occurred in the display panel when the reference resistance is equal to the maximum reference resistance.

A display driver comprising a crack resistance measurement circuit configured to measure a magnitude of a crack resistance,

• wherein the crack resistance measurement circuit includes:
• a reference resistance generation circuit configured to generate a reference resistance using at least two resistors connected in series and at least two switches connected to correspond to the at least two resistors;
• a comparator configured to compare the magnitude of the crack resistance with a magnitude of the reference resistance and output a resistance comparison result;
• and
• a circuit controller configured to output a reference resistance control signal for controlling the at least two switches according to the resistance comparison result.