Patent ID: 7633588

Claim:
A liquid crystal display (LCD) panel, comprising: a first substrate, comprising: a first base; an active matrix pixel array having a pixel disposed on the first base, wherein the pixel is defined by a first scan line, a second scan line, a first data line and a second data line disposed on the first base; a thin film transistor (TFT) disposed inside the pixel and electrically connected to the first scan line and the first data line; a first electrode having a plurality of first portions disposed inside the pixel and electrically connected to the TFT; a second electrode having a plurality of second portions disposed inside the pixel, wherein the second portions are inter-spaced with the first portions, and wherein a driving voltage with an alternate current squared wave alternating among a positive voltage, a zero voltage and a negative voltage is applied to the first electrode and the second electrode, so that the electrical field directions formed between the first portions and the second electrodes are perpendicular to the surface of the first base, and the electrical field direction on each of the first portions is opposite to that on each of the second portions, and the average value of the alternate current squared wave within a time interval equals zero; and a first horizontal alignment film disposed above the first base for covering the first electrode and the second electrode; a second substrate, comprising: a second base; and a second horizontal alignment film disposed above the second base, wherein the horizontal rubbing direction of the second horizontal alignment film is substantially parallel to that of the first horizontal alignment film; and a smectic liquid crystal layer sealed between the first substrate and the second substrate and positioned between the first horizontal alignment film and the second horizontal alignment film; wherein the smectic liquid crystal layer is selected from a group consisting of a ferroelectric liquid crystal (FLC) and an anti-ferroelectric liquid crystal (AFLC).