Intergrated circuit, method for operating the same, and display system including the same

A display system comprising:

• a display device configured to be operated at a first frame rate or a second frame rate higher than the first frame rate;
• and
• a driver integrated circuit (IC) configured to control an operation of the display device,
• wherein the driver IC comprises:
• a control signal generator configured to change a gating control signal from a low level to a high level according to a timing when a data enable signal changes from the high level to the low level, and change the gating control signal from the high level to the low level after a predetermined horizontal back porch interval from a rising edge of a horizontal synchronization signal;
• and
• a clock gating circuit configured to stop toggling of a first clock signal input through a first input terminal to output a second clock signal maintained at the low level through a first output terminal when the gating control signal of the high level is input to a control terminal, and resume the toggling of the first clock signal to output the second clock signal, which toggles between the high level and the low level, through the first output terminal when the gating control signal of the low level is input to the control terminal.

An operation method of an integrated circuit for gating a clock signal, comprising:

• changing a gating control signal from a low level to a high level when a data enable signal changes from the high level to the low level;
• stopping toggling of a first clock signal input through a first input terminal to output a second clock signal maintained at the low level to a first output terminal in response to the gating control signal of the high level;
• changing the gating control signal from the high level to the low level after a predetermined horizontal back porch interval from a rising edge of a horizontal synchronization signal;
• and
• resuming the toggling of the first clock signal to output the second clock signal, which toggles between the high level and the low level, to the first output terminal in response to the gating control signal of the low level.