US 2019/0157629 A1 · Display substrate and manufacturing method thereof, display device and manufacturing method thereof

Abstract

A display substrate including: a base substrate; a thin film transistor provided on a side of the base substrate; a planarization layer provided on a side of the thin film transistor away from the base substrate; a pixel defining layer provided on a side of the planarization layer away from the base substrate, defining a plurality of pixel regions arranged in a matrix, an orthographic projection of the pixel defining layer on the base substrate covering an orthographic projection of the thin film transistor on the base substrate; an organic light emitting diode provided in the pixel region, a recess being provided at a side of the planarization layer away from the base substrate, located at a boundary between the pixel defining layer and the pixel region and located between the thin film transistor and the organic light emitting diode, and a light blocking structure being provided in the recess.

Claims20

Dependent claims

A display substrate, comprising:

a base substrate;
a thin film transistor provided on a side of the base substrate;
a planarization layer provided on a side of the thin film transistor away from the base substrate:
a pixel defining layer provided on a side of the planarization layer away from the base substrate, defining a plurality of pixel regions arranged in a matrix, an orthographic projection of the pixel defining layer on the base substrate covering an orthographic projection of the thin film transistor on the base substrate;
a light emitting diode provided in the pixel region,
wherein a recess being provided at a side of the planarization layer away from the base substrate, the recess being located at a boundary between the pixel defining layer and the pixel region, and the recess being located between the thin film transistor and the light emitting diode, and
a light blocking structure being provided in the recess.

4 more elements

A manufacturing method of a display substrate, comprising steps of:

providing a base substrate;
forming a thin film transistor on a side of the base substrate;
forming a planarization layer on a side of the base substrate on which the thin film transistor has been formed;
forming a recess at a side of the planarization layer away from the base substrate;
forming a light blocking structure in the recess;
forming a pixel defining layer on the planarization layer, the pixel defining layer defining a plurality of pixel regions;
forming a light emitting diode on a side of the planarization layer in the pixel region away from the base substrate,
wherein an orthographic projection of the pixel defining layer on the base substrate covers an orthographic projection of the thin film transistor on the base substrate, the recess is formed at a boundary between the pixel defining layer and the pixel region, and the recess is located between the thin film transistor and the light emitting diode.

5 more elements

Dependencies are inferred from the claim text.

Display substrate and manufacturing method thereof, display device and manufacturing method thereof

Life of this patent

Display substrate and manufacturing method thereof, display device and manufacturing method thereof

Life of this patent

Abstract

Claims20