Display device and operating method thereof

A driver receiving a multiplied-speed switching signal which indicates performing said multiplied-speed driving and driving a display panel in response to original image data or compression image data generated by performing compression processing on multiplied-speed drive image data, said driver comprising:

• a decompression circuit reproducing said multiplied-speed drive image data from said compressed image data;
• a selector responsive to said multiplied-speed switching signal for selecting said original image data or said multiplied-speed drive image data as selected image data;
• a data register circuitry comprising a plurality of latch circuits sequentially latching said selected image data;
• a latch controller feeding a plurality of latch signals to said plurality of latch circuits, respectively;
• and
• a drive circuitry driving said display panel in response to said selected image data received from said data register circuitry,
• wherein said plurality of latch circuits each latch associated one of said selected image data in response to assertion of associated one of said latch signals fed thereto,
• wherein said latch controller is responsive to said multiplied-speed switching signal for selectively performing one of a first operation of sequentially asserting said plurality of latch signals in response to rising or falling edges of said clock signal and a second operation of sequentially asserting said plurality of latch signals in response to the rising and falling edges of said clock signal.

An operation method of a display device including a display panel, a driver and a controller, said method comprising:

• externally receiving original image data by said controller;
• generating multiplied-speed drive image data by performing multiplied-speed drive processing on said original image data in said controller, when said driver performs a first drive operation in which said driver drives said display panel with said multiplied-speed driving;
• generating compressed image data by performing compression processing on said multiplied-speed drive image data in said controller when said first drive operation is performed;
• transferring said compressed image data from said controller to said driver when said first drive operation is performed;
• reproducing said multiplied-speed drive image data by decompressing said compressed image data in said driver when said first drive operation is performed;
• driving said display panel in response to said reproduced multiplied-speed drive image data by said driver when said first drive operation is performed;
• transferring said original image data from said controller to said driver when said driver performs a second drive operation in which said driver drives said display panel without using said multiplied-speed driving;
• and
• driving said display panel in response to said original image data by said driver when said second drive operation is performed.