Spliced screen and preparation method thereof

The invention discloses a spliced screen and a preparation method thereof, and the preparation method comprises the following steps: providing an initial display module, the initial display module is defined with a display area and a non-display area, and the initial display module comprises a thin film transistor array layer and a light-emitting layer arranged on the thin film transistor array layer; wherein the thin film transistor array layer comprises a metal signal line extending from the display area to the non-display area; carrying out hollowing processing on the signal wires located in the non-display area to enable the signal wires located in the non-display area to form hollowing parts so as to obtain a transition display module; a cutting track is preset on the transition display module, and the cutting track is located at the center line of the hollowed-out part or located on the outer side of the center line of the hollowed-out part; and cutting the transition display module along the cutting tr