LCD (liquid crystal display) and OLED (organic light-emitting diode) graphic display modules are used to present graphical information, images, and text in electronic devices. LCDs utilize liquid crystal technology to modulate light transmission, while OLEDs emit light when an electric current passes through organic semiconductor layers. These modules find applications in smartphones, tablets, digital cameras, and wearable devices, offering high resolution, vivid colors, and low power consumption.