The Dell Latitude D820 laptop typically uses a flat, flexible cable known as the LVDS (Low-Voltage Differential Signaling) cable to connect the display panel to the motherboard. This cable is responsible for transmitting video signals from the motherboard to the display.
If you're looking for a replacement or troubleshooting information for the display cable of the Dell D820 laptop, you can search for "Dell D820 LVDS cable" or "Dell D820 display cable". These terms should help you find relevant products or resources for your specific laptop model.