Organic light-emitting diode display substrate and display device

An organic light-emitting diode display substrate, comprising a light-emitting layer, a light modulation layer, and a color conversion layer, wherein the light-emitting layer is configured to emit a first color light, the light modulation layer and the color conversion layer are arranged on different light-exiting paths of the light-emitting layer, the color conversion layer is configured to convert the first color light into a second color light and a third color light, and the light modulation layer is configured to modulate an emergent direction of the first color light,

• wherein the light-emitting layer comprises a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit that are periodically arranged on a driving substrate and emit the first color light, the light modulation layer comprises a first light modulation unit and a second light modulation unit that are arranged on a light-exiting path of the first light-emitting unit and modulates the emergent direction of the first color light, and the color conversion layer comprises a second color conversion unit that is arranged on a light-exiting path of the second light-emitting unit and converts the first color light into the second color light and a third color conversion unit that is arranged on a light-exiting path of the third light-emitting unit and converts the first color light into the third color light, and
• wherein difference between an attenuation of brightness of blue light (Xb) and an attenuation of brightness of white light (Xw) is less than 12% at a viewing angle of 30°, wherein the attenuation of brightness of blue light at a viewing angle of 30° is calculated as Xb in percentage based on the blue light brightness at the viewing angle of 0° assumed as 100%;
• and the attenuation of brightness of the white light at a viewing angle of 30° is calculated as Xw in percentage based on the white light brightness at the viewing angle of 0° assumed as 100%.

An organic light-emitting diode display substrate, comprising a driving substrate, a light-emitting layer arranged on the driving substrate, a color conversion layer arranged on the light-emitting layer, an overcoat covered on the color conversion layer and a light modulation layer, wherein the light-emitting layer is configured to emit a first color light, the light modulation layer and the color conversion layer are arranged on different light-exiting paths of the light-emitting layer, the color conversion layer is configured to convert the first color light into a second color light and a third color light, and the light modulation layer is configured to modulate an emergent direction of the first color light,

• wherein the light-emitting layer comprises a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit that are periodically arranged on a driving substrate and emit the first color light, the light modulation layer comprises a first light modulation unit and a second light modulation unit that are arranged on a light-exiting path of the first light-emitting unit and modulates the emergent direction of the first color light, and the color conversion layer comprises a second color conversion unit that is arranged on a light-exiting path of the second light-emitting unit and converts the first color light into the second color light and a third color conversion unit that is arranged on a light-exiting path of the third light-emitting unit and converts the first color light into the third color light, and
• wherein a distance between a surface of the overcoat near to the driving substrate, which locates at a position corresponding to the second color conversion unit and the third color conversion unit, and the driving substrate is greater than a distance between a surface of the overcoat near to the driving substrate, which locates between the second color conversion unit and the third color conversion unit, and the driving substrate.