Controller driver and liquid crystal display apparatus using the same

A liquid crystal display apparatus comprising:

• a controller driver;
• and
• a liquid crystal display section driven by the controller driver,
• wherein the controller driver comprises:
• an overdrive processing unit generating corrected image data by correcting a tone value of received image data based on the received image data and image data of a frame previous to the received image data;
• an image memory storing the previous frame image data;
• a data line driver supplying a liquid crystal driving voltage based on the corrected image data;
• and
• a roundabout route through which the previous frame image data stored in the image memory is transferred to the data line driver for displaying a still image, the roundabout route bypassing the overdrive processing unit,
• wherein in displaying a moving image, the data line driver generates the driving voltage based on the corrected image data fed from the overdrive processing unit, and the image memory receives sequentially the received image data, and
• wherein in displaying a still image, the data line driver generates the driving voltage based on the previous frame image data fed from the image memory via the roundabout route.

A method of controlling a display, comprising:

• outputting previous frame image data from an image memory to one of:
• for displaying a moving image, a connection route to an overdrive processing unit, said overdrive processing unit generating corrected image data based on received image data and said previous frame image data;
• and
• for displaying a still image, a roundabout route through which the previous frame image data stored in the image memory is transferred to the data line driver, the roundabout route bypassing said overdrive processing unit;
• and
• supplying a driving voltage for said display based on one of said corrected image data from said overdrive processing unit and said previous frame image data from said roundabout route.