Patent ID: 8901782

Claim:
A display apparatus comprising: a signal processor which processes an image signal; a display unit which displays an image corresponding to the processed image signal; and a power supply unit which receives an input of alternating current (AC) power and supplies operating power to the display unit; wherein the power supply unit comprises an AC filter, a rectifier and a discharging circuit unit which discharges a remaining voltage of the AC filter if the input of the AC power is suspended, and does not discharge the voltage if the input of the AC power is detected, wherein the AC filter is provided between the AC power and the rectifier, wherein the discharging circuit unit comprises a discharging device which discharges the remaining voltage of the AC filter, and a first switch which controls a current caused by the remaining voltage of the AC filter to flow in the discharging device when the input of the AC power is suspended, and wherein the first switch controls a current not to flow in the discharging device when the input of the AC power is detected.