A Liquid Crystal Display (LCD) device having an Optically Compensated Bend (OCB) mode, which can restrict an initial high current while supplying a high voltage to a liquid crystal, includes: pixel circuits formed at crossing points of a plurality of scan lines and a plurality of data lines and including an Liquid Crystal (LC) capacitor of an OCB mode formed between a pixel electrode and a common electrode; an Electrostatic Discharge (ESD) protection circuit connected to each data line to prevent static electricity from accumulating in each pixel circuit; a DC-DC converter outputting a voltage for initial bend transition of the LC capacitor of the OCB mode; and a high voltage supplying circuit receiving a voltage of the DC-DC converter and transmitting a high voltage to the common electrode. An initial high current is prevented from flowing through the LC panel to thereby protect the LC panel and other elements from damage, and an initial bend transient time of the OCB mode liquid crystal is significantly reduced.