BACKGROUND

Technical Field

The disclosure relates to a driver circuit, and particularly relates to a display driver and a display driving method.

Description of Related Art

In general, owing to the organic light emitting diode (OLED) display panel has a problem of the light brightness attenuation, the conventional display driver must be configured with additional current integrator circuits to sense the OLED display panel. Therefore, the conventional display driver of the OLED display panel has problems of high cost and high power consumption. Therefore, regarding how to reduce the cost of the display driver and achieve the effect of power saving, solutions of several embodiments are provided below.

SUMMARY

The disclosure is directed to a display driver and a display driving method, and are capable of driving a display panel and sensing an electrical characteristic of the display panel.

The display driver of the disclosure is adapted for driving a display panel and sensing an electrical characteristic of the display panel. The display driver includes a first amplifier circuit. The first amplifier circuit is coupled to the display panel. The first amplifier circuit includes a first driving circuit, a first sensing circuit and a first operational amplifier. The first operational amplifier is coupled to the display panel through a first driving line and a first sensing line. The first driving circuit is coupled to the first operational amplifier. The first driving circuit is configured to provide a first driving signal to the display panel through the first operational amplifier and the first driving line during a driving period. The first sensing circuit is coupled to the first operational amplifier. The first sensing circuit is configured to receive a first sensing signal from the display panel through the first operational amplifier and the first sensing line during a first sensing period.

The display driving method of the disclosure is adapted to a display driver. The display driver includes a first amplifier circuit coupled to the display panel through a first driving line and a first sensing line. The first amplifier circuit includes a first driving circuit, a first sensing circuit and a first operational amplifier. The display driving method includes following steps. A first driving signal is provided by the first driving circuit to the display panel through the first operational amplifier and the first driving line during a driving period. A first sensing signal is received by the first sensing circuit from the display panel through the first operational amplifier and the first sensing line during a first sensing period.

Based on the above, according to the display driver and the display driving method of the disclosure, the display driver is capable of driving a display panel and sensing an electrical characteristic of the display panel by one operational amplifier to reduce the number of operational amplifiers in the display driver, and reduce the cost of the display driver.

To make the aforementioned more comprehensible, several embodiments accompanied with drawings are described in detail as follows.

