Liquid crystal display driving apparatus including pixel voltage driving circuit for providing periodical pulse high-voltage signal

A liquid crystal display driving apparatus comprising:

• a gate driving unit,
• a source driving unit, and
• a gate line and a date line intersected with each other to define a pixel region, in which a pixel electrode and a common electrode are provided,
• wherein the source driving unit comprises:
• a pixel voltage driving circuit for providing a unidirectional voltage signal applied to the pixel electrode in the pixel region and for providing a periodical pulse high-voltage signal;
• and
• a common voltage driving circuit for outputting a common voltage signal to the common electrode which corresponds to the unidirectional voltage signal provided by the pixel voltage driving circuit, the pixel voltage driving circuit being controlled by a first control signal line,
• wherein the unidirectional voltage signal and the periodical pulse high-voltage signal are output depending on the first control signal line, and the periodical pulse high-voltage signal is a bias voltage signal,
• wherein the unidirectional voltage signal is configured for displaying a required color, the pulse high-voltage signal is configured for displaying a full white or a full black frame, and the unidirectional voltage signal and the pulse high-voltage signal are alternately applied to the pixel electrode,
• wherein the unidirectional voltage signal applied to the pixel electrode and the common voltage signal generate an electric field which drives liquid crystal molecules to tilt in one direction.