US 10,311,994 B2 · Quantum dot ink

Abstract

A quantum dot ink, a manufacturing method thereof and a quantum dot light emitting diode device are provided. The quantum dot ink includes a non-polar organic solvent, a surface tension modifier and a hydrophobic quantum dot, the quantum dot ink further includes a carrier transport material, wherein phase separation is present between the hydrophobic quantum dot and the carrier transport material. After completing ink-jet printing the quantum dot ink, phase separation occurs between the hydrophobic quantum dot and the carrier transport material. Thus, the two-layer structure of a hydrophobic quantum dot layer and a carrier transport material layer is formed through one process. Not only a quantum dot light emitting device is manufactured by the method of ink-jet printing, but also the operation is simplified, and the manufacturing cost of the quantum dot light emitting device is reduced.

Claims16

Dependent claims

A quantum dot ink, comprising a non-polar organic solvent, a surface tension modifier and a hydrophobic quantum dot,

wherein the quantum dot ink further comprises a carrier transport material, and phase separation is present between the hydrophobic quantum dot and the carrier transport material;
a viscosity of the quantum dot ink is from 10 cP to 12 cP, and a surface tension of the quantum dot ink is from 32 dynes/cm to 42 dynes/cm;
a mass percentage of each component in the quantum dot ink is:
5%-15% carrier transport material, 1%-5% surface tension modifier, 2%-20% hydrophobic quantum dot and 60%-92% non-polar organic solvent,
the surface tension modifier is an organic acid, an organic ammonia or a mixture thereof.

2 more elements

Dependencies are inferred from the claim text.

Quantum dot ink

Life of this patent

Quantum dot ink

Life of this patent

Abstract

Claims16