Special display cards and multimedia cards in the display are key hardware components for image processing and video output, which are responsible for converting graphic signals from a computer or other device into images that the display can display. Special graphics cards (often called graphics cards or Gpus) and multimedia cards have different functions and applications, but they are closely related to the visual output of the display.

The special graphics card is mainly used for graphics rendering and acceleration, and it is responsible for the calculation and processing of images through a high-performance graphics processing unit (GPU), especially when dealing with complex graphics and high-resolution displays. The GPU can accelerate 3D graphics rendering, video playback, and image effect processing, greatly improving the image quality and fluency of the display. Modern special display cards not only support high-resolution, ultra-high frame rate display, but also support advanced display technologies such as virtual reality (VR) and high dynamic range (HDR).

Multimedia card is mainly used for audio and video input and output and processing. In addition to basic video signal transmission, it can also process audio signals and other multimedia data, often used in a wider range of entertainment and audiovisual experiences, such as playing high-definition movies, video editing or gaming. Multimedia cards often integrate video codec, audio processing, and external interface functions, which can ensure that the display receives clear and high-quality audio and video signals, improving the overall user experience.

These two types of cards play an important role in DC charging piles, significantly improving the visual performance of the display by enhancing image processing and multimedia output capabilities.