Display substrate and display device

A display substrate, comprising:

• a base substrate, and
• a plurality of sub-pixels on the base substrate,
• wherein each of the plurality of sub-pixels comprises a pixel circuit, a first connection electrode and a pixel electrode, and the first connection electrode is connected with the pixel circuit and is electrically connected with the pixel electrode through a first via hole;
• pixel circuits of the plurality of sub-pixels are distributed in a plurality of columns in a first direction and a plurality of rows in a second direction;
• the plurality of sub-pixels comprise a first sub-pixel and a second sub-pixel adjacent in the second direction;
• a height of an orthographic projection of the first via hole of the first sub-pixel on the base substrate and a height of an orthographic projection of the first via hole of the second sub-pixel on the base substrate are different in the first direction;
• each of the plurality of sub-pixels further comprises a second connection electrode, and the second connection electrode is on a side of the first connection electrode close to the base substrate;
• for the each pixel circuit, the pixel circuit is connected with the first connection electrode through the second connection electrode, and the second connection electrode is electrically connected with the first connection electrode through a second via hole;
• the pixel circuit comprises a drive sub-circuit and a storage capacitor,
• wherein the drive sub-circuit comprises a control terminal, a first terminal and a second terminal, and is configured to be coupled with a light emitting element and control a drive current flowing through the light emitting element;
• the storage capacitor comprises a first capacitor electrode and a second capacitor electrode, and the first capacitor electrode is configured to receive a first power voltage, and the second capacitor electrode is coupled with the control terminal of the drive sub-circuit;
• the display substrate further comprises a first power line extended along the first direction, and the first power line and the second connection electrode are in a same layer and insulated from each other, and the first power line is electrically connected with the first capacitor electrode of the first sub-pixel through a third via hole to provide the first power voltage;
• the display substrate further comprises a second power line extended along the first direction, and the second power line and the first connection electrode are in a same layer and insulated from each other, and the second power line is electrically connected with the first power line through a fourth via hole;
• the second power line comprises a first portion and a second portion, and the first portion has a greater width than the second portion in the second direction;
• and
• a maximum size of the fourth via hole in the second direction is greater than a maximum size of the second portion in the second direction.

A display substrate, comprising:

• a base substrate, and
• a plurality of sub-pixels on the base substrate,
• wherein each of the plurality of sub-pixels comprises a pixel circuit, a first connection electrode and a pixel electrode, and the first connection electrode is connected with the pixel circuit and is electrically connected with the pixel electrode through a first via hole;
• pixel circuits of the plurality of sub-pixels are distributed in a plurality of columns in a first direction and a plurality of rows in a second direction;
• the plurality of sub-pixels comprise a first sub-pixel and a second sub-pixel adjacent in the second direction;
• a height of an orthographic projection of the first via hole of the first sub-pixel on the base substrate and a height of an orthographic projection of the first via hole of the second sub-pixel on the base substrate are different in the first direction;
• each of the plurality of sub-pixels further comprises a second connection electrode, and the second connection electrode is on a side of the first connection electrode close to the base substrate;
• for the each pixel circuit, the pixel circuit is connected with the first connection electrode through the second connection electrode, and the second connection electrode is electrically connected with the first connection electrode through a second via hole;
• the pixel circuit comprises a drive sub-circuit and a storage capacitor,
• wherein the drive sub-circuit comprises a control terminal, a first terminal and a second terminal, and is configured to be coupled with a light emitting element and control a drive current flowing through the light emitting element;
• the storage capacitor comprises a first capacitor electrode and a second capacitor electrode, and the first capacitor electrode is configured to receive a first power voltage, and the second capacitor electrode is coupled with the control terminal of the drive sub-circuit;
• wherein the pixel circuit further comprises a light emission control sub-circuit, and the light emission control sub-circuit is configured to be connected to the first terminal of the drive sub-circuit and a first voltage terminal, and is configured to apply the first power voltage from the first voltage terminal to the first terminal of the drive sub-circuit in response to a light emission control signal;
• the display substrate further comprises a light emission control line extended along the second direction, and the light emission control line is connected with the light emission control sub-circuit to provide the light emission control signal;
• in a direction perpendicular to the base substrate, the first via hole of the first sub-pixel is not overlapped with the light emission control line, and the second via hole of the first sub-pixel is at least partially overlapped with the light emission control line.