Active matrix LCD works

TFT-LCD liquid crystal display structure and TN-LCD liquid crystal display is basically the same, except that the TN-LCD on the mezzanine of the electrode to FET transistor, and the lower mezzanine to the common electrode.

TFT-LCD liquid crystal display works with the TN-LCD there are many differences. TFT-LCD lcd module imaging principle is the use of "back through the style" illumination mode. When the light source, first revealed upward through the lower polarizer, the light transmission through the liquid crystal molecules. Since the upper and lower electrodes sandwich electrode and a common electrode into FET, the FET conduction electrode, the alignment state of the liquid crystal molecules will also change, but also to achieve through the shielding and light transmitting display purposes. But the difference is due to a capacitive effect transistor FET, lcm module the potential state can be maintained, the previous transmission of the liquid crystal molecules will remain in this state until the next time the combined power FET electrode change their arrangement so far.