Patent ID: 8599180

Claim:
A liquid crystal display comprising: a driving circuit comprising: a common electrode; a plurality of pixel electrodes; a peripheral circuit, and a processing unit comprising a first input/output (I/O) port, a second I/O port; and a plurality of third I/O ports, the first I/O port and the second I/O port being connected to the common electrode via the peripheral circuit, each third I/O port being respectively connected to one of the pixel electrodes; and a display panel located between the common electrode and the pixel electrodes, the display panel comprising a liquid crystal film, the liquid crystal film comprising a plurality of liquid crystal molecules, each liquid crystal molecule being corresponding to one pixel electrode; wherein, the processing unit controls the first I/O port, the second I/O port, and the third I/O ports to output either a first voltage or a second voltage according to a display signal, thus the pixel electrodes connected to the third I/O ports are at the first voltage or the second voltage accordingly, the peripheral circuit processes the first voltage or the second voltage outputted by the first I/O port and the second I/O port and outputs a voltage which is in the range between the first voltage and the second voltage to the common electrode, thereby causing the liquid crystal molecules to rotate and the display panel to display an image corresponding to the display signal.