The invention relates to a display connector with a 4K image resolution. It primarily comprises a first connector, a second connector and a third connector. The present invention is a connector for a display to support high specification images with quad full high definition (QFHD). The third connector is used to connect an existing video playback device merely having the playback function of full high definition (FHD). Then the FHD image data is upscaled through an electrically connected image upscaling module of the first connector, and QFHD image signals with an ultra-high definition resolution is displayed through an electronic display device. Accordingly, the QFHD image signals with the ultra-high definition resolution can be displayed without upgrading the hardware of the player or computer so as to dramatically reduce the required cost of upgrading the hardware.