Abstract: The present invention relates to a haptic feedback system and, specifically, to a device and method for controlling an actuator for haptic feedback, the method comprising: an actuator resonance frequency correction driving step of driving an actuator by repeatedly generating and outputting a drive signal including a driving time interval in which driving voltage is applied to the actuator and a guard time interval in which a back electromotive force (BEMF) signal of the actuator is detected, while correcting the length of the driving time interval according to detection time of a zero cross point of the BEMF signal detected within the guard time interval; and an actuator braking step of outputting at least one brake signal in synchronization with a zero cross point of the BEMF signal detected within the guard time interval, in order to remove residual vibration of the actuator.

Abstract: Provided is an apparatus for driving a display panel. A short circuit can be detected by detecting a current (due to the short circuit) applied to a display panel through a low-dropout (LDO) regulator during a black data period. In addition, power applied to the display panel from a DC-DC converter can be turned off according to the short-circuit detection result.

Abstract: Provided is an apparatus for driving a display panel. A short circuit can be detected by detecting a current (due to the short circuit) applied to a display panel through a low-dropout (LDO) regulator during a black data period. In addition, power applied to the display panel from a DC-DC converter can be turned off according to the short-circuit detection result. A level of a short-circuit current that can be detected by a short-circuit detecting unit may be adjusted by changing a ratio of a pass transistor of the LDO regulator and a sensing transistor of the short-circuit detecting unit, thereby detecting a micro-short-circuit current (several microamperes) that occurs due to a micro-short circuit. In addition, provided is an apparatus for driving a display panel capable of, in a case where power sources applied to a display panel are short-circuited due to a crack that occurs in the display panel, detecting this and turning off power applied to the display panel from a DC-DC converter.