The Acer Aspire 4741, 4551, and D640 laptops typically use 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 these Acer Aspire models, you can search for "Acer 4741 LVDS cable," "Acer 4551 display ribbon cable," or "Acer D640 video flex cable." These terms should help you find relevant products or resources for your specific laptop models.