Abstract: The present application relates to the field of display technology and specifically provides a display panel and a display device. The display panel includes a substrate, a pixel definition layer, and a light-emitting functional layer. The pixel definition layer is disposed on a side of the substrate and provided with a pixel opening, and a side of the pixel definition layer facing the pixel opening is an opening sidewall. The light-emitting functional layer covers the pixel opening, and the opening sidewall is provided with at least one protrusion or at least one recess. The display panel can improve the bonding strength between the pixel definition layer and other film layers inside the pixel opening by providing the protrusion or recess on the opening sidewall of the pixel opening.

Abstract: The present disclosure provides a display panel, a preparing method thereof and a display device. The display panel includes a substrate together with a pixel defining layer and a first packaging layer located on the substrate, the first packaging layer is located on a side, away from the substrate, of the pixel defining layer, and compactness of at least a portion of the pixel defining layer is greater than compactness of the first packaging layer, or a refractive index of at least a portion of the pixel defining layer is greater than a refractive index of the first packaging layer. In the display panel, by increasing compactness of the pixel defining layer, a degree to which the pixel defining layer is etched can be reduced in a process of etching the first packaging layer, so as to protect a structure under the pixel defining layer.