Quantum dot material structure, liquid crystal display device, and electronic device

Patent metadata

Field	Value
Publication number	US-11520180-B2
Application number	US-202016765434-A
Country	US
Kind code	B2
Filing date	Apr 24, 2020
Priority date	Mar 27, 2020
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

The present invention provides a quantum dot material structure, a liquid crystal display device, and an electronic device. The quantum dot material structure is applied in the liquid crystal display device. The quantum dot material structure includes a quantum dot core, a quantum dot shell, and a quantum dot ligand layer in order from an inside to an outside. The quantum dot core comprises a cadmium arsenide magic-size, and the quantum dot core is used to absorb green light of a predetermined wavelength. The quantum dot shell is used to protect the quantum dot core. The quantum dot ligand layer is used to promote a structural dispersion of the quantum dot material.

First claim

What is claimed is:

1. A quantum dot material structure, applied in a liquid crystal display device;
wherein the quantum dot material structure comprises a quantum dot core, a quantum dot shell, and a quantum dot ligand layer in order from an inside to an outside;
the quantum dot core comprises a cadmium arsenide magic-size cluster, and the quantum dot core is used to absorb green light of a predetermined wavelength;
the quantum dot shell is used to protect the quantum dot core; and
the quantum dot ligand layer is used to promote a dispersion of the quantum dot material structure.

2. The quantum dot material structure as claimed in claim 1 , wherein the quantum dot shell comprises one or more of following materials: ZnSe, ZnS, ZnO, SiO2, and a quantum dot hydrogel.

3. The quantum dot material structure as claimed in claim 1 , wherein the quantum dot ligand layer comprises one or more of following materials: pyridine, organic acid, alkyl mercaptan, organic amine, and organic phosphorus, the organic acid includes mercapto acid, and the organic amine includes mercaptoamine.

4. The quantum dot material structure as claimed in claim 1 , wherein the predetermined wavelength is 535 nm.

5. A liquid crystal display device, comprising a quantum dot material structure and a color resistance layer, applied in the liquid crystal display device;
wherein the quantum dot material structure comprises a quantum dot core, a quantum dot shell, and a quantum dot ligand layer in order from an inside to an outside;
the quantum dot core comprises a cadmium arsenide magic-size cluster, and the quantum dot core is used to absorb green light of a predetermined wavelength;
the quantum dot shell is used to protect the quantum dot core;
the quantum dot ligand layer is used to promote a dispersion of the quantum dot material structure;
the color resistance layer comprises a red color resist, a blue color resist, and a green color resist; and
the quantum dot material structure is distributed in the red color resist and the blue color resist.

6. The liquid crystal display device as claimed in claim 5 , wherein the quantum dot shell comprises one or more of following materials: ZnSe, ZnS, ZnO, SiO2, and a quantum dot hydrogel.

7. The liquid crystal display device as claimed in claim 5 , wherein the quantum dot ligand layer comprises one or more of following materials: pyridine, organic acid, alkyl mercaptan, organic amine, and organic phosphorus, the organic acid includes mercapto acid, and the organic amine includes mercaptoamine.

8. The liquid crystal display device as claimed in claim 5 , wherein the predetermined wavelength is 535 nm.

9. The liquid crystal display device as claimed in claim 5 , wherein the liquid crystal display device comprises a blue diode light source.

10. A liquid crystal display device, comprising a color resistance layer and a polarizing layer;
wherein the color resistance layer comprises a red color resist, a blue color resist, and a green color resist;
a quantum dot material structure is coated on the polarizing layer corresponding to projection positions of the red color resist and the blue color resist;
the quantum dot material structure comprises a quantum dot core, a quantum dot shell, and a quantum dot ligand layer in order from an inside to an outside;
the quantum dot core comprises a cadmium arsenide magic-size cluster, and the quantum dot core is used to absorb green light of a predetermined wavelength;
the quantum dot shell is used to protect the quantum dot core; and
the quantum dot ligand layer is used to promote a dispersion of the quantum dot material structure.

11. The liquid crystal display device as claimed in claim 10 , wherein the quantum dot shell comprises one or more of following materials: ZnSe, ZnS, ZnO, SiO2, and a quantum dot hydrogel.

12. The liquid crystal display device as claimed in claim 10 , wherein the quantum dot ligand layer comprises one or more of following materials: pyridine, organic acid, alkyl mercaptan, organic amine, and organic phosphorus, the organic acid includes mercapto acid, and the organic amine includes mercaptoamine.

13. The liquid crystal display device as claimed in claim 10 , wherein the predetermined wavelength is 535 nm.

14. The liquid crystal display device as claimed in claim 10 , wherein the polarizing layer comprises an upper polarizing layer and a lower polarizing layer; and
the quantum dot material structure is coated on the lower polarizing layer.

15. The liquid crystal display device as claimed in claim 14 , wherein the quantum dot material structure is coated on an outside of the lower polarizing layer.

Assignees

• Tcl China Star Optoelectronics Tech Co Ltd

Inventors

• Zhou Miao

Classifications

• H10W90/00

  Package configurations · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• C01P2004/64

  Nanometer sized, i.e. from 1-100 nanometer · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• G02F1/133528

  Polarisers · CPC title