Quantum dot ink based on ink-jet printing

A technology of inkjet printing and quantum dots, which is applied in ink, household utensils, applications, etc., can solve the problems that the viscosity and surface tension cannot meet the requirements of printing or film formation, and the strict requirements of quantum dot inks, so as to achieve uniform film formation, good dispersion effect

Inactive Publication Date: 2017-12-22
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, inkjet printing has strict requirements on quantum dot inks. The boiling point, viscosity and surface tension of commonly used quantum dot solvents cannot meet the conditions of printing or film formation well.

Method used

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  • Quantum dot ink based on ink-jet printing
  • Quantum dot ink based on ink-jet printing
  • Quantum dot ink based on ink-jet printing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation of a non-lithographic pixel bank and its application in a fully printed light-emitting display, the specific steps are:

[0022] Phenylcyclohexane (boiling point 237°C) and decane (boiling point 174°C) were mixed in a 5ml reagent bottle at a volume ratio of 4:1 and stirred evenly for use.

[0023] Red ZnSe / ZnS core-shell quantum dots with oleylamine ligands were added to the mixed solvent with a mass fraction of 1wt%, and shaken until uniformly dispersed.

Embodiment 2

[0025] Cyclodecane (boiling point 201°C) and decane (boiling point 174°C) were mixed in a 5ml reagent bottle at a volume ratio of 4:1 and stirred evenly for use.

[0026] Red CdSe / ZnS core-shell quantum dots with oleylamine ligands were added to the mixed solvent at a mass fraction of 1 wt%, and shaken until uniformly dispersed.

Embodiment 3

[0028] Cyclodecane (boiling point 201°C) and toluene (boiling point 110°C) were mixed in a 5ml reagent bottle at a volume ratio of 1:1 and stirred evenly for use.

[0029] The green inorganic perovskite CsPbBr with oleic acid ligand was added to the mixed solvent with a mass fraction of 1wt%. 3 Quantum dots, shake until evenly dispersed.

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Abstract

The invention specifically relates to quantum dot ink based on ink-jet printing, belonging to the technical field of electro-optic display devices. The quantum dot ink comprises quantum dots and an organic solvent, wherein the organic solvent is a single solvent or a mixed solvent which is a low-polarity or non-polar solvent, and the mass content of the solvent accounts for 40-99.9 wt% of the quantum dot ink. The ink provided by the invention has good dispersibility and stability and proper boiling point, surface tension and viscosity, can meet the requirements of quantum dot ink-jet printing, achieves uniform film-forming, and is beneficial for industrialization of quantum dot pixelated displays.

Description

technical field [0001] The invention belongs to the technical field of photoelectric display devices, and in particular relates to a quantum dot ink based on inkjet printing. Background technique [0002] Quantum dots are nanocrystals with a size in the range of 2-10nm and have a separated energy band structure. It can emit fluorescence with tunable wavelength under the conditions of light injection and current injection. The principle of quantum dot light-emitting display (QLED) is that electrons and holes recombine and emit light in the quantum dot layer through the electron transport layer and the hole transport layer respectively. [0003] In addition to the advantages of OLED all-solid-state, low energy consumption, ultra-thin, no viewing angle limitation, high color gamut, excellent shock resistance, and easy realization of flexible display, QLED also shows good stability and is suitable for solution method preparation. Features, with potential low manufacturing cost...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/50C09D11/36C09D11/38
CPCC09D11/50C09D11/36C09D11/38
Inventor 李福山
Owner FUZHOU UNIV
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