What are the working characteristics and driving methods of TFT color LCD liquid crystal display?

Color TFT-LCD uses thin-film transistors to generate voltage to control the liquid crystal steering display. It consists of a glass plate with a thin-film field-effect transistor matrix circuit and a glass plate with a color filter. mobile LCD screen. Each pixel in the display is divided by the horizontal and vertical common metal wires of the thin film transistor matrix circuit. Each pixel includes a thin film field effect transistor and a capacitor. This capacitor is composed of an indium tin oxide (ITO) transparent electrode in the matrix circuit and The common 1TO electrode on the color filter is formed. The liquid crystal sandwiched between the two electrodes acts as the dielectric in the capacitor. The display adopts the driving method of scanning one line at a time. When a positive pulse is applied to a certain horizontal scanning common wire (or gate line), all the thin film transistors connected to the horizontal wire are turned on and are in a conductive state. At this time, the capacitor on each pixel is charged to the voltage of its corresponding vertical common wire (or referred to as signal wire). When it is the turn of other scanning lines to apply positive pulses, the original scanning line will apply a negative voltage to turn off all the thin film transistors connected to the scanning line, showing a non-conductive state. TFT liquid crystal display' style='white-space: normal;'>TFT LCD screenis an active matrix display, so its driving method is completely different from that of TN and STN liquid crystal display, and adopts the source matrix dynamic driving method . The reason why the TFT liquid crystal display can display vivid colors is that its internal color filters and TFT field effect tubes work together to complete the coordination. Therefore, the charge originally charged to each capacitor can be kept for the time required for scanning one frame, until the next turn to scan the line. If the display uses twisted nematic phase (TN) liquid crystal, it is best to use AC voltage to drive, that is, the polarity of the driving voltage of each picture must be opposite to that of the previous picture. The liquid crystal in the display is like a light valve. As the voltage on each pixel changes, the intensity of colored light passing through the pixel also changes. TFT LCD screenLCD liquid crystal display'>mobile phone LCD mobile phone LCD screenLCD display

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