Provided in the present application are an array substrate and a display panel. The array substrate comprises: a thin-film transistor (TFT) device layer (1); a pixel definition layer (4), wherein the pixel definition layer (4) is arranged in a non-via-hole area (A1) of a non-opening area (A) in the TFT device layer (1), and the non-opening area (A) comprises a via-hole area (A2) and the non-via-hole area (A1); a blocking wall (5), wherein the blocking wall (5) is arranged in the via-hole area, and the blocking wall (5) is in the shape of an inverted trapezoid; an organic light-emitting diode layer (7), wherein the organic light-emitting diode layer (7) is arranged on an upper end of the blocking wall (5), and an upper end of a partial auxiliary electrode (2) of the via-hole area (A2); and a cathode (8), wherein the cathode (8) is arranged on the upper end of the partial auxiliary electrode (2) of the via-hole area (A2). By means of the present application, an uneven distribution of voltages of a cathode can be alleviated, thereby improving the uniformity of brightness of a display panel.