Display panel and display device

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and improves the touch precision and mechanical strength of the display panel on the premise of reducing parasitic capacitance of a touch layer and a first electrode. The display panel comprises a pixel definition layer, a light-emitting unit, a first supporting column and a touch layer. The light-emitting unit comprises a first electrode, a light-emitting layer and a second electrode. The first supporting column is located between the pixel defining layer and the first electrode, and the first supporting column is located in the non-opening area of the pixel defining layer; the first electrode covers the light-emitting layer and the first supporting column; the touch layer is located on the side, away from the pixel defining layer, of the first electrode. The touch layer comprises a hollow part, and a first part and a second part which are connected with each other; the orthographic proje