US 12,563,886 B2 · Quantum dot light-emitting device, display apparatus, and manufacturing method

Abstract

A quantum dot light-emitting device, a display apparatus, and a manufacturing method are provided. The quantum dot light-emitting device includes a base substrate and a plurality of sub-pixels having different light-emitting colors located on one side of the base substrate. Each sub-pixel includes a first electrode; a quantum dot light-emitting portion, the quantum dot light-emitting portion being located on the side of the first electrode facing away from the base substrate; an electrical response portion, the electrical response portion being located between the first electrode and the quantum dot light-emitting portion and having a conjugated polymer or a reaction product of the conjugated polymer; and a second electrode, the second electrode being located on the side of the quantum dot light-emitting portion facing away from the electrical response portion.

Claims20

Dependent claims

A quantum dot light-emitting device, comprising a base substrate and a plurality of sub-pixels located on a side of the base substrate and having different light-emitting colors, wherein each of the sub-pixels comprises:

a first electrode;
a quantum dot light-emitting portion, wherein the quantum dot light-emitting portion is located on a side of the first electrode facing away from the base substrate;
an electrical response portion, wherein the electrical response portion is located between the first electrode and the quantum dot light-emitting portion and comprises a conjugated polymer or a reaction product of the conjugated polymer, the electrical response portion is configured to have different surface contact properties by adjusting a voltage of the first electrode when forming the quantum dot light-emitting portion, and the surface contact property is hydrophilic or hydrophobic;
and
a second electrode, wherein the second electrode is located on a side of the quantum dot light-emitting portion facing away from the electrical response portion.

2 more elements

A manufacturing method for a quantum dot light-emitting device, comprising:

forming first electrodes of sub-pixels on a side of a base substrate;
forming electrical response portions comprising conjugated polymers for initial states of the sub-pixels;
and
sequentially forming quantum dot light-emitting portions of the sub-pixels having different light-emitting colors, wherein a current sub-pixel with a quantum dot light-emitting portion to be formed is taken as a target sub-pixel, and the sequentially forming the quantum dot light-emitting portions of the sub-pixels having the different light-emitting colors comprises:
forming the quantum dot light-emitting portion of the target sub-pixel;
wherein
the forming the quantum dot light-emitting portion of the target sub-pixel comprises:
adjusting surface contact properties of the electrical response portions and/or the quantum dot light-emitting portions, to enable a surface contact property of an exposed surface of the target sub-pixel to be different from surface contact properties of exposed surfaces of the other sub-pixels, wherein the surface contact property is hydrophilic or hydrophobic;
and
forming a quantum dot light-emitting portion with a same surface contact property as the surface contact property of the exposed surface of the target sub-pixel.

7 more elements

Dependencies are inferred from the claim text.

Quantum dot light-emitting device, display apparatus, and manufacturing method

Life of this patent

Quantum dot light-emitting device, display apparatus, and manufacturing method

Life of this patent

Abstract

Claims20