Display device having security function

A display device, comprising:

• a display panel;
• a module frame including first and second contact pins and having an opening that the display panel is disposed therein;
• and
• a Printed Circuit Board (PCB) including first and second pads connectable with the first and second contact pins of the module frame, respectively, in a contacting state and disconnectable therewith in a non-contacting state;
• the first and second contact pins being electrically connected to each other, and
• the PCB including a circuit block, the circuit block being in a non-operational state when the first and second pads are in the non-contacting state with the first and second contact pins of the module frame, respectively,
• wherein the circuit block of the PCB includes a driver Integrated Circuit (IC) that includes
• a driving voltage generator that generates first and second power source voltages for driving the display panel, and
• a timing controller that generates a plurality of control signals for driving the display panel, the timing controller being electrically connected to the second pad, and the timing controller being configured to short the first and second power source voltages in response to the security signal inputted through the second pad.