Ocb mode liquid crystal display and a driving method of the same

A liquid crystal display comprising:

• a first insulating substrate;
• a plurality of gate lines formed on the first insulating substrate;
• a plurality of data lines insulated from the gate lines and intersecting the gate lines to define red, green and blue pixel areas;
• a plurality of pixel electrodes provided on the pixel areas;
• a plurality of thin film transistors connected to the gate lines, the data lines and the pixel electrodes;
• a second insulating substrate facing the first insulating substrate;
• a common electrode formed on the second insulating substrate;
• a liquid crystal layer interposed between the first insulating substrate and the second insulating substrate and aligned in an OCB mode;
• first and second compensation films provided on outer surfaces of the first and the second insulating substrate;
• and
• first and second polarization film provided on outer surfaces of the first and the second compensation films,
• wherein a cell gap of the liquid crystal layer has different values on the red, the green and the blue pixel areas.

A liquid crystal display comprising:

• a first insulating substrate;
• a plurality of gate lines formed on the first insulating substrate;
• a plurality of data lines insulated from the gate lines and intersecting the gate lines to define red, green and blue pixel areas;
• a plurality of pixel electrodes provided on the pixel areas;
• a plurality of thin film transistors connected to the gate lines, the data lines and the pixel electrodes;
• a second insulating substrate facing the first insulating substrate;
• a common electrode formed on the second insulating substrate;
• a liquid crystal layer interposed between the first insulating substrate and the second insulating substrate and aligned in an OCB mode;
• first and second compensation films provided on outer surfaces of the first and the second insulating substrate;
• first and second polarization films provided on outer surfaces of the first and the second compensation films;
• a gate driver sequentially applying a gate-on voltage to the gate lines for turning on the thin film transistors;
• a data driver applying data voltages to the data lines;
• and
• a controller converting red, green and blue original image data from an external device into modified image data based on the difference in the wavelength dispersion between the compensation films and the liquid crystal layer, transmitting the modified image data to the data driver, and generating timing signals for controlling operation of the gate driver and the data driver to be output to the gate driver and the data driver.