US Patent 7589703 Liquid crystal display with sub-pixel structure

A liquid-crystal display wherein each color sub-pixel is divided into at least a first region and a second region, each region having a pair of electrodes and a storage capacitor. The lower electrode in each region is connected to the same gate line via a different TFT. The upper electrode in each region is connected to a different common line to receive a different voltage signal. Each of the voltage signals comprises a common component and a different signal component. The different signal components are periodical in a “swing” fashion. These signals are in-sync with each other but with different polarity. When the sub-pixel is divided into three regions, the voltage signal in the third common line is equal to the common component. When suitable swing signals in positive frames and negative frames are applied to the regions in sub-pixels, different pixel inversion effects can be achieved.