Liquid crystal and device of driving light source therefor

A device for driving a plurality of lamps, the device comprising:

• a transforming unit which has at least four transformers and supplies driving voltages having inverted phases to adjacent lamps;
• and
• an inverter which controls the transforming unit,
• wherein each of the lamps comprise external electrode fluorescent lamp (EEFL), each of the transformers has a primary coil connected to the inverter and a secondary coil connected to the lamps, a lamp is connected to two different secondary coils and wherein a first two primary coils corresponding to two secondary coils connected to the first lamp and a second two primary coils corresponding to two secondary coils connected to the second lamp are connected to the inverter in parallel.

A liquid crystal display, comprising:

• a plurality of pixels arranged in a matrix;
• a plurality of lamps, which supplies light to the pixels based on driving voltages, and comprises a first lamp and a second lamp;
• a transforming unit which has at least four transformers and supplies the driving voltages having inverted phases to adjacent lamps;
• an inverter which controls the transforming unit;
• and
• a current sensor which detects a current which flows in the transforming unit and which provides current information for the inverter,
• wherein each of the lamps comprise an external electrode fluorescent lamp (EEFL), each of the transformers has a primary coil connected to the inverter and a secondary coil connected to the lamps, a lamp is connected to two different secondary coils and wherein a first two primary coils corresponding to two secondary coils connected to the second lamp are connected to the inverter in parallel.

A liquid crystal display, comprising:

• a plurality of pixels arranged in a matrix;
• a plurality of lamps which supplies light to the pixels based on driving voltages;
• a transforming unit which has at least two transformers and which supplies the driving voltages having inverted phases to adjacent lamps;
• an inverter which controls the transforming unit;
• and
• a luminance sensor which detects a luminance of the lamps and which provides luminance information for the inverter,
• wherein each of the lamps comprise an external electrode fluorescent lamp (EEFL), each of the transformers has a primary coil connected to the inverter and a secondary coil connected to the lamps, and two terminals of the secondary coil are connected to different lamps.