The Structure of TFT LCD Displays
TFT LCD Display (Thin-Film-Transistor Liquid Crystal Display) technology features a sandwich-like structure with liquid crystal material between two glass plates. It includes polarizer filters, RGB color filters, and alignment layers to control light and color.
Each pixel in an active matrix has a transistor with a capacitor, allowing it to retain its charge without constant electrical input. The TFT layer controls light flow, a color filter displays the color, and the top layer is the visible screen. Electrical charges alter the molecular structure of the liquid crystals, letting various wavelengths of backlight pass through. The active matrix changes rapidly based on the control device signal.
The resolution of TFT displays depends on the density of the color matrix and TFT layout. Higher pixel counts mean greater detail. TFT displays vary by screen size, power consumption, resolution, and interface.
Unlike OLED displays, TFT screens require a backlight, typically an LED, to generate images. This design reduces power consumption and depth. TFT display modules consist of the TFT screen, LED backlight, and driving circuitry.
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