Display panel, vehicle-mounted display device and method for manufacturing display panel

A vehicle-mounted display device, comprising a display panel;

• wherein the display panel comprises a substrate, a display structure and a package structure, wherein the display structure is disposed on the substrate, the package structure is packaged on a side, away from the substrate, of the display structure, characterized in that:
• the display structure comprises a pixel definition layer, a light-emitting layer and a patterned cathode layer, the pixel definition layer is disposed on the substrate, a light-emitting region opening is disposed on the pixel definition layer, a portion of the light-emitting layer is disposed in the light-emitting region opening, the patterned cathode layer is disposed on sides, away from the substrate, of the pixel definition layer and the light-emitting layer, the patterned cathode layer has a cathode patterned notch, and the cathode patterned notch extends through a thickness of the patterned cathode layer and is disposed corresponding to the pixel definition layer;
• and
• the package structure comprises a first package layer, the first package layer is packaged on a side, away from the substrate, of the display structure, and thickness uniformity of the first package layer is greater than or equal to 60%.