Patent ID: 6822716
Filing Date: 2004-11-23
Classification: G02F

Abstract:
An in-plane switching liquid crystal display with an alignment free structure, comprising:a first substrate and a second substrate arranging in parallel to each other; a liquid crystal layer formed in a space between first substrate and the second substrate; a plurality of gate lines extending in a first direction and formed on the first substrate; a plurality of data lines extending in a second direction and formed on the first substrate, wherein the second direction is perpendicular to the first direction, and the data lines and gate lines constitute a plurality of pixel areas arranging in a matrix form; a plurality of TFT structures formed in the plurality of pixel areas respectively; a plurality of comb-shaped common electrode structures disposed in the plurality of pixel areas respectively on the first substrate, wherein each comb-shaped common electrode structure comprises a common bus line parallel to the gate line and at least two common electrodes extending in the second direction; a plurality of floating metal patterns disposed in the plurality of pixel areas respectively on the first substrate, wherein each floating metal pattern comprises at least one floating metal layer which extends in the second direction between the two common electrodes and is patterned on the same plane with the common electrodes; and a plurality of comb-shaped pixel electrode structures disposed in the plurality of pixel areas respectively on the first substrate, wherein each comb-shaped pixel electrode structure comprises a bar near the gate line and at least one pixel electrode which extends in the second direction between the two common electrodes and covers the floating metal layer; wherein, the center of the pixel electrode is aligned to the center of the floating metal layer, each interval between two adjacent common electrode and pixel electrode is fixed at a constant, and the width of the pixel electrode is larger than the width of the floating metal layer.