Display substrate and display device

Abstract

A display substrate includes a base substrate and sub-pixels. The sub-pixel includes a light-emitting element and a driving circuit. The driving circuit includes first to third transistors and a first storage capacitor. The second transistor includes an active portion including a channel portion and first and second electrodes respectively connected to the channel portion on opposite sides of the channel portion. The channel portion includes first and second sub-channel portions and a channel connection portion connected between the first and second sub-channel portions. The display substrate further includes a shielding portion, a layer where the shielding portion is located is on a side of a layer where the active portion of the second transistor is located away from the base substrate. An orthographic projection of the shielding portion on the base substrate at least partially overlaps with an orthographic projection of the channel connection portion on the base substrate.