The invention relates to a liquid crystal display unit which comprises a pixel unit and a quasi-isotropic liquid crystal layer with Kerr effect, wherein the pixel unit comprises a plurality of sub-pixel units, each sub-pixel unit is at least provided with a first penetration area and a second penetration area, and each sub-pixel unit comprises a switch assembly, a pixel electrode and a common electrode, wherein the pixel electrode is provided with a plurality of first strip-shaped patterns; the common electrode is provided with a plurality of second strip-shaped patterns, and the first strip-shaped patterns and the second strip-shaped patterns are arranged alternately; in the first penetration area, the width of each first strip-shaped pattern is L1, and the gap between each first strip-shaped pattern and the adjacent second strip-shaped pattern is S1; in the second penetration area, the width of each first strip-shaped pattern is L2, and the gap between each first strip-shaped pattern and the adjacent second strip-shaped pattern is S2; and L1 is not equal to L2 or S1 is not equal to S2 or L1/S1 is not equal to L2/S2.