Flexible display panel having concave area and flexible display device including the flexible display panel

A flexible display device, comprising:

• a flexible display panel, wherein the flexible display panel is divided into a display area and a non-display area surrounding the display area, and the non-display area includes a fan-out area, and the flexible display panel comprises:
• a plurality of signal traces provided in the display area, the plurality of signal traces extending along a first direction;
• a first edge concaving toward an interior of the display area to form, on the flexible display panel, at least one concave area and at least one convex area adjacent to the at least one concave area, wherein the at least one convex area protrudes along a direction away from the interior of the display area, the at least one convex area and the at least one concave area are arranged along a second direction, and the second direction intersects the first direction;
• a reflexed area, the reflexed area having a folding axis parallel to the first edge, the at least one convex area;
• a plurality of lead wires provided in the fan-out area, wherein each lead wire of the plurality of lead wires comprises a first end and a second end, and the plurality of signal traces is electrically connected to the first ends of the plurality of lead wires;
• and
• a driving chip arranged in the reflexed area, wherein the driving chip is electrically connected to the second ends of the plurality of lead wires, and the driving chip is a ball grid array package driving chip,
• wherein the display area comprises a first display area and a second display area, the first display area comprises the at least one convex area, and the second display area does not comprise the at least one convex area and is adjacent to the first edge;
• wherein the plurality of signal traces comprises a plurality of first signal traces and a plurality of second signal traces, and the plurality of lead wires comprises a plurality of first lead wires and a plurality of second lead wires;
• wherein the plurality of first signal traces is provided in the first display area, and a plurality of first lead wires electrically connected to the plurality of first signal traces is provided in the fan-out area;
• wherein a plurality of second signal traces is provided in the second display area, and a plurality of second lead wires electrically connected to the plurality of second signal traces is provided in the fan-out area;
• wherein the non-display area comprises a second non-display area which extends along the second direction and is located between the least one convex area and the at least one concave area, and a third non-display area located between the first edge and the at least one concave area;
• wherein the flexible display panel further comprises at least one connecting line which is arranged in a layer different from a layer in which the plurality of signal traces is arranged, the at least one connecting line extends from the display area to the second non-display area, and at least one of the plurality of first signal traces is electrically connected to at least one of the plurality of lead wires by the at least one connecting line;
• wherein the plurality of first signal traces comprises a first signal trace group and a second signal trace group, the first signal trace group is away from the at least one concave area, and the second signal trace group is close to the at least one concave area;
• and
• wherein signal traces in the first signal trace group are electrically connected to the plurality of first lead wires by the at least one connecting line, and signal traces in the second signal trace group are electrically connected to the plurality of first lead wires directly.