Liquid crystal display having high transmittance and high aperture ratio in which electrodes having branches arranged symmetry together in adjacent sub-pixel regions

A liquid crystal display having high transmittance and high aperture ratio comprising:

• an upper and a lower substrate opposed to be spaced apart;
• a liquid crystal layer interposed between inner surfaces of the upper and lower substrates, the liquid crystal layer including a plurality of liquid crystal molecules;
• a gate bus line and a data bus line formed in the lower substrate in a matrix configuration and defining sub-pixel regions;
• a counter electrode including a body of a rectangular frame shape formed at each sub-pixel region and at least a diagonal branch dividing a region surrounded by the body;
• a pixel electrode including a first electrode which is formed to be overlapped with a selected portion of the body of the counter electrode, and second electrodes being extended from the first electrode and disposed parallel to diagonal branches being formed at their corresponding sub-pixels;
• a thin film transistor formed at an intersection of the gate bus line and the data bus line, and switching a signal transmitted from the data bus line into the pixel electrode when the gate bus line is selected;
• and
• a homogeneous alignment layer formed on inner surfaces of the upper and lower substrates,
• wherein the diagonal branches and the second electrodes at a selected sub-pixel region are extended as diagonal lines with respect to the gate bus line and the data bus line,
• wherein other diagonal branches and second electrodes at other sub-pixel regions adjoining in all directions to said selected sub-pixel region are arranged to make a symmetry together with the diagonal branches and the second electrodes of the selected sub-pixel region,
• wherein the counter and pixel electrodes are made of a transparent conductor, and widths of the diagonal branches of the counter electrode and the second electrodes of the pixel electrodes are properly set so that the electric field being generated between the counter and pixel electrodes being affected by the electrodes entirely.