Patent ID: 8441604

Claim:
A liquid crystal display device comprising: first and second substrates; a plurality of gate and data lines on the first substrate to define a plurality of pixel regions; a thin film transistor in each pixel region of the first substrate; a black matrix on the second substrate; a color filter layer on the second substrate; a pixel electrode and a common electrode in each pixel region of the respective first and second substrates; at least one protrusion of a curved-stripe shape below the common electrode of the second substrate; at least one slit in the pixel electrode of the first substrate; and a liquid crystal layer between the first and second substrates, wherein the protrusion having a flat surface and a protruding surface, the flat surface of the protrusion being contacted with the color filter and the common electrode is disposed on the protruding surface of the protrusion, wherein the protrusion is formed in a circular-stripe shape having the predetermined width on the second substrate and the slit is formed at a region of the first substrate corresponding to a central region of the circular shape of the protrusion of the second substrate, thereby an isotropic electric field is generated between the first and second substrates by the protrusion and slit.