LCD panel driver mode

February 10, 2017

In TN and STN liquid crystals, the only way to drive the electrodes is to drive the X and y axes. Therefore, the larger the display part, the longer the electrode reaction time of the central part may be. To keep the screen consistent, the overall speed will slow down. Simply put, it's like CRT monitors don't update their screens fast enough. The user will feel the screen flicker and jump. Or you need a fast 3D animation display, but the display speed can't keep up, and the display may be delayed. As a result, early LCD displays had certain size limits that made them unsuitable for watching movies or playing 3D games.


To ameliorate this situation, liquid crystal display technology was later driven by active matrix addressing. This is the ideal device to achieve high data density LIQUID crystal display effect, and very high resolution. The method uses silicon transistor electrodes made of thin film technology to select any display point (pixel) switch by scanning. In fact, the nonlinear function of liquid crystal is replaced by the nonlinear function of thin film transistor, which is difficult to control. In TFT-type liquid crystal displays, thin wires are drawn on conductive glass and the electrodes are matrix switches arranged by thin film transistors. At the intersection of each line, there is a controller enclosure. Although the drive signal is scanned quickly at each display point, only the transistor matrix on the electrode is selected. The display point can drive the voltage of the liquid crystal molecule, so that the axis of the liquid crystal molecule forms a "bright" contrast. The unselected display point is naturally a "dark" contrast, thus avoiding the dependence of the display function on the electric field effect capability of the liquid crystal.