Pixel definition layer on display substrate, display substrate, and display apparatus

A display substrate, comprising:

• a base and a pixel definition layer arranged on a side of the base, wherein the pixel definition layer comprises:
• a first definition layer, and a second definition layer, the first definition layer and the second definition layer are located on a same side of the base, at least one part of a surface of the second definition layer away from the base is higher than a surface of the first definition layer away from the base, the first definition layer comprises:
• a plurality of first definition structures arranged in an array, the second definition layer comprises:
• a plurality of second definition structures arranged at intervals in a first direction, a plurality of first definition structures located between two adjacent second definition structures are arranged at intervals in a second direction, and an orthographic projection of a first definition structure on the base is separated from an orthographic projection of a second definition structure on the base, the second direction intersects the first direction;
• the display substrate further comprising:
• a drive circuit layer arranged on a side of the base close to the pixel definition layer, and an anode layer arranged on a side of the drive circuit layer close to the pixel definition layer, wherein the drive circuit layer comprises:
• a plurality of drive transistors, the anode layer comprises:
• a plurality of anodes arranged in an array, an anode comprises:
• a first portion configured to be connected, in a lapped way, with a drain electrode of a corresponding drive transistor through a via hole, a width of the first portion is smaller than a width of the first definition structure, the width refers to a dimensional feature in the first direction;
• and
• an organic light emitting layer and a plurality of pixel opening areas, wherein the plurality of pixel opening areas are defined by the plurality of first definition structures and the plurality of second definition structures, at least a portion of the organic light emitting layer is located in a pixel opening area, the anode further comprises:
• a second portion located on a side of the first portion in a direction opposite the second direction, the second portion is configured to be connected with the organic light emitting layer, a width of the second portion is greater than the width of the first portion, and there is an overlapping area between an orthographic projection of the second portion on the base and an orthographic projection of the second definition structure on the base.