Patent ID: 8217879

Claim:
A liquid crystal display, comprising: a plurality of data lines; a plurality of scan lines crossing said data lines, wherein said scan lines are grouped into a first group and a second group, and scan lines of the first group and scan lines of the second group are alternatively arranged; a plurality of pixels each defined by two neighboring data lines and two neighboring scan lines crossing the two neighboring data lines, the two neighboring scan lines comprising a first scan line in the first group and a second scan line in the second group; a plurality of common electrodes disposed in corresponding pixels to define said pixels into a plurality of first sub-pixels and a plurality of second sub-pixels; a plurality of switching devices respectively formed in the locations of said scan lines crossing said data lines, wherein each of the pixels includes a first switching device, a second switching device and a third switching device, wherein the first switching device and the second switching device are directly connected to a first data line and the third switching device is connected to the first data line through the first switching device, wherein the second switching device connected with the second group's scan line is located in corresponding first sub-pixel, and the third switching device connected with the first group's scan line is located in corresponding second sub-pixel; and a plurality of pixel electrodes electrically coupled to said switching devices respectively; wherein the data lines are configured to be provided with two-step signals sequentially, each of the two-step signals comprises a first voltage signal and a second voltage signal different from the first voltage signal, a gate of the second switching device and a gate of the third switching device are connected respectively to the second scan line and the first scan line both defining one of said pixels, and a gate of the first switching device is connected to the second scan line of the neighboring pixel in a same column; wherein the first voltage signal is written to the first sub-pixel in a first one of said pixels through the second switching device when only the second scan line defining the first one of said pixels is driven, and the second voltage signal is written to the second sub-pixel in the first one of said pixels through the first switching device and the third switching device when the first scan line defining the first one of said pixels and the second scan line defining a second one of said pixels are both driven.