Display panel with spacers and walls for the spacers, manufacturing method thereof and display device

A display panel comprising:

• a first substrate and a second substrate opposite each other;
• a spacer located on the first substrate;
• and
• at least two walls located on the second substrate, wherein the at least two walls form a recess region, wherein the spacer corresponds to the recess region, and wherein the at least two walls are configured to limit movement of the spacer;
• wherein the wall comprises:
• a body layer, which is located on the second substrate and protrudes from the second substrate toward the first substrate;
• and
• a buffer layer, which is located on a surface of the body layer facing the first substrate;
• wherein a surface roughness of the buffer layer is less than that of the body layer;
• wherein a hardness of the buffer layer is less than that of the body layer;
• wherein the body layer is formed of a source/drain electrode material and an active layer material;
• wherein the buffer layer is formed of a photoresist material;
• wherein the display panel further comprises a bulge located in the recess region of the second substrate and in contact with the spacer;
• and
• wherein the bulge is formed of a source/drain electrode material.