Method for manufacturing ultra-thin glass substrates and method for manufacturing display panel

A method for manufacturing ultra-thin glass substrates comprising the following steps:

• S510:
• providing a glass base material preset with n substrate areas and a skeleton area surrounding the substrate areas, wherein n is greater than or equal to 1;
• S520:
• at least forming an etching protection layer on each of an upper surface and a lower surface of each substrate area of the glass base material, respectively, wherein, each etching protection layer comprises a main area and at least one thinned area extending along a preset bending path;
• S530:
• at least etching the skeleton area of the glass base material to separate the substrate areas from the glass base material, forming at least one bending stress dissipation groove extending along the preset bending path on each substrate area through the thinned area, and forming a stress dissipation edge along an edge of each substrate area;
• S540:
• removing the etching protection layer to get independent glass substrates having the bending stress dissipation groove.