Liquid crystal display device

A liquid crystal display device comprising:

• a liquid crystal display panel comprising a plurality of pixels which are located at a region where a plurality of scan lines and a plurality of data lines cross each other, each pixel comprising a common electrode, a pixel electrode and OCB liquid crystals;
• a scan driver for applying scan signals for selecting the plurality of pixels through the plurality of scan lines;
• a source driver for applying data voltages to the plurality of pixels through the plurality of data lines;
• a backlight part for applying a light source to the liquid crystal display panel;
• a backlight controller for applying a backlight voltage to the backlight part;
• and
• a timing controller for applying control signals for controlling operation of the scan driver, the source driver and the backlight controller,
• wherein the source driver comprises a D/A converter for outputting an analog signal corresponding to gradation data input, a triangular wave generator for outputting triangular wave signals, and a comparator for generating the data voltages to be applied to the plurality of pixels without using an amplifier by comparing the analog signal with the triangular wave signals, and
• wherein each of the plurality of pixels further comprises a switching transistor for transmitting a corresponding one of the data voltages transmitted through the data lines to the pixel electrode in response to a corresponding one of the scan signals;
• and a storage capacitor for storing an electric charge corresponding to a voltage difference between the corresponding one of the data voltages and a common voltage of the common electrodes.