Array substrate, display panel and electronic device

A display panel, comprising an array substrate and an opposing substrate arranged in an opposing way with respect to the array substrate, wherein the array substrate comprises:

• a first substrate (10), comprising a plurality of sub-pixel regions (101) arranged in an array along a row direction (X) and a column direction (Y);
• a pixel circuit layer formed on the first substrate (10), comprising a plurality of sub-pixel circuits, wherein at least part of the sub-pixel circuits is located in the sub-pixel regions (101);
• and
• a planarization layer (17) formed on the pixel circuit layer, wherein the planarization layer (17) is provided with a first via hole (170) located in the sub-pixel regions (101), and comprises at least one pattern portion (171), the pattern portion (171) comprises a plurality of pattern units (171a) arranged in an array along the row direction (X) and the column direction (Y), and the pattern unit (171a) is uneven and located at least in the sub-pixel regions (101);
• wherein the pattern unit (171a) comprises a plurality of first bumps (1710) arranged along a circumferential direction (C) of the pattern unit (171a) and a spacing groove (1711) surrounding each of the first bumps (1710), and a part of the spacing groove (1711) is shared by two adjacent first bumps (1710) in the circumferential direction (C);
• wherein the pattern unit (171a) further comprises a second bump (1712) located within a central area surrounded by each of the first bumps (1710);
• and
• wherein the spacing groove (1711) on a same side of the first bump (1710) and the second bump (1712) is arranged in a non-straight shape;
• wherein a shape of each of the first bumps (1710) is identical to each other, and the shape of each of the first bumps is different from a shape of the second bump (1712).