Patent ID: 11877476
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 0:
1. A display substrate, comprising a microcavity structure layer and a light emitting structure layer that are stacked, a reflective electrode being disposed in the microcavity structure layer, a groove being disposed on a surface of the microcavity structure layer, the light emitting structure layer comprising a first electrode disposed in the groove, and the first electrode being connected to the reflective electrode;
wherein the display substrate further comprises: a driving circuit layer disposed on a silicon-based substrate, the driving circuit layer comprising a driving transistor, and the driving circuit layer being provided with a first via exposing a drain electrode of the driving transistor;
wherein the microcavity structure layer comprises:
a connection electrode disposed on the driving circuit layer, the connection electrode being connected to the drain electrode of the driving transistor through the first via;
a first insulating layer covering the connection electrode, the first insulating layer being provided with a second via exposing the connection electrode;
a reflective electrode disposed on the first insulating layer, the reflective electrode being connected to the connection electrode through the second via; and
a second insulating layer covering the reflective electrode, the second insulating layer being provided, on a surface away from the silicon-based substrate, with the groove in which a third via exposing the reflective electrode is provided, wherein the groove is communicated with the reflective electrode through the third via hole and separated from the drain electrode by the third via hole, the third insulating layer, the reflective electrode, the first insulating layer, and the connection electrode, the first electrode is disposed in the groove of the second insulating layer to control a height difference between the first electrode and the second insulating layer, and a width of the groove is greater than a width of the first electrode, and a height of the groove is less than a height of the first electrode.