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

Claim 0:
1. An organic light emitting diode display substrate, comprising:
a light emitting unit layer;
a first band gap layer; and
a color conversion layer,
wherein the first band gap layer and the color conversion 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 first band gap layer is between the light emitting unit layer and the color conversion layer and overlaps the second light emitting unit and the third light emitting unit, and
wherein the first 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.