Mask, exposure method and touch panel

A touch panel, comprising:

• a substrate;
• a touch driving electrode disposed on the substrate;
• and
• a touch sensing electrode disposed on the substrate,
• wherein at least one of the touch driving electrode and the touch sensing electrode has a metal mesh-like structure comprising nodes, each node comprises a first protruding structure and a second protruding structure distributed on both sides of a mesh bar, and the first protruding structure and the second protruding structure are arranged in a staggered manner along an extension direction of the mesh bar;
• wherein the first protruding structure and the second protruding structure extend from the node;
• wherein the mesh-like structure comprises a first mesh bar and a second mesh bar directly connected to both ends of the node respectively, and a center line of the first mesh bar does not coincide with a center line of the second mesh bar;
• wherein the mesh-like structure comprises a fifth region located on at least one side of a third region and a fourth region away from the boundary line,
• the third region comprises a third mesh bar, the fourth region comprises a fourth mesh bar, the fifth region comprises a fifth mesh bar, a width of the fifth mesh bar in a direction perpendicular to an extending direction of the fifth mesh bar is larger than a width of the third mesh bar in a direction perpendicular to an extending direction of the third mesh bar, and/or, the width of the fifth mesh bar in the direction perpendicular to the extending direction of the fifth mesh bar is larger than a width of the fourth mesh bar in a direction perpendicular to an extending direction of the fourth mesh bar.