Display substrate and display device with light transmitting region having hollow part

A display substrate comprising:

• a display region;
• and
• a peripheral region surrounding the display region,
• wherein the display region comprises a light transmitting display region and a normal display region on at least one side of the light transmitting display region, the light transmitting display region comprises a plurality of sub-pixel regions, and at least one sub-pixel region of the plurality of sub-pixel regions comprises a light emitting region and a transparent region, and
• wherein the display substrate comprises:
• a base substrate;
• and
• a display layer on a side of the base substrate and in the normal display region and the light transmitting display region, the display layer comprises a plurality of insulating layers, and a portion of the display layer in the transparent region has a first hollow part that extends through at least one insulating layer of the plurality of insulating layers,
• wherein the display substrate further comprises a light shielding layer in the light transmitting display region, the light shielding layer is between the base substrate and the display layer, a portion of the light shielding layer in the transparent region comprises a second hollow part, and an orthographic projection of the first hollow part on the base substrate at least partially overlaps an orthographic projection of the second hollow part on the base substrate.