Light emitting device having a compensation unit, display substrate and display device

1 . A display substrate, comprising pixel units, at least one of which comprises a first light emitting device, a second light emitting device, a third light emitting device and a compensation light emitting device, wherein each of the first light emitting device, the second light emitting device, the third light emitting device and the compensation light emitting device comprises:

a first electrode and a second electrode opposite to each other;

a plurality of light-emitting units stacked between the first electrode and the second electrode; and

a third electrode between adjacent light-emitting units,

wherein the first electrode and the second electrode are both coupled to a first signal terminal, the third electrode is coupled to a second signal terminal, and the first signal terminal is configured to provide a first signal and the second signal terminal is configured to provide a second signal, so that only part of the plurality of light-emitting units emits light at a same time,

wherein the plurality of light-emitting units of the first light emitting device comprise a first monochromatic light-emitting unit configured to emit red light and a first polychromatic light-emitting unit configured to emit first polychromatic light; the plurality of light-emitting units of the second light emitting device comprise a second monochromatic light-emitting unit configured to emit green light and a second polychromatic light-emitting unit configured to emit second polychromatic light; the plurality of light-emitting units of the third light emitting device comprise a third monochromatic light-emitting unit configured to emit blue light and a third polychromatic light-emitting unit configured to emit third polychromatic light; and the plurality of light-emitting units of the compensation light emitting device comprise a light emitting unit configured to emit green light and a fourth polychromatic light-emitting unit configured to emit white light.

2 . The display substrate of claim 1 , wherein the first light emitting device comprises a plurality of first monochromatic light-emitting units, the second light emitting device comprises a plurality of second monochromatic light-emitting units, and the third light emitting device comprises a plurality of third monochromatic light-emitting units.

3 . The display substrate of claim 1 , further comprising: a light-emitting drive circuit, wherein the light-emitting drive circuit is coupled to the first signal terminal and the second signal terminal, and is configured to control the first signal terminal to output the first signal and control the second signal terminal to output the second signal.

4 . A display device, comprising the display substrate of claim 1 .

5 . The display substrate of claim 1 , further comprising: a color filter layer;

wherein the color filter layer is on a light-exiting side of the plurality of light emitting devices.

6 . The display substrate of claim 1 , wherein

the first polychromatic light comprises red light;

the second polychromatic light comprises green light; and

the third polychromatic light blue light.

7 . The display substrate of claim 6 , wherein the first polychromatic light, the second polychromatic light, the third polychromatic light, and the fourth polychromatic light are all white light.

8 . The display substrate of claim 6 , further comprising: a color filter layer;

wherein the color filter layer is on a light-exiting side of the plurality of light emitting devices.