Patent ID: 11910688
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 12:
13. An organic light emitting diode display substrate, comprising:
a light emitting unit layer;
a color conversion layer; and
a second band gap layer,
wherein the color conversion layer and the second band gap layer are on a light exit path of the light emitting unit layer,
wherein the light emitting unit layer comprises a first light emitting unit, a second light emitting unit, and a third light emitting unit periodically arranged on a driving substrate and configured to emit light of a first color,
wherein the color conversion layer is configured to convert a part of the light of the first color into light of a second color and light of a third color, respectively,
wherein the second band gap layer is on a side of the color conversion layer away from the light emitting unit layer, and
wherein the second band gap layer comprises a stacked structure layer, the stacked structure layer comprises a first inorganic layer, a first organic layer, and a second inorganic layer stacked in sequence, and a refractive index of any one of the first inorganic layer, the first organic layer, and the second inorganic layer is in a range of 1.3 to 2.4.