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Composite ink, preparation method thereof, and device

An ink and mixed solvent technology, applied in the field of composite ink and its preparation, can solve the problems of light quenching of luminescent materials, difficulty in ink preparation, damage and the like, and achieve the effect of improving luminous efficiency

Pending Publication Date: 2019-05-03
TCL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a composite ink and its preparation method and device, aiming to solve the difficulties in the preparation of existing inks, the difficulty in meeting the needs of inkjet printing equipment, and the fact that existing inks are prone to lead to luminescent materials The problem of light quenching and easy to cause physical or chemical changes and damage to other structures of the device

Method used

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  • Composite ink, preparation method thereof, and device
  • Composite ink, preparation method thereof, and device
  • Composite ink, preparation method thereof, and device

Examples

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preparation example Construction

[0030] See figure 1 , figure 1 It is a flowchart of a preferred embodiment of a method for preparing a composite ink according to the present invention, as shown in the figure, which includes the steps:

[0031] S10. Provide a nano metal particle solution;

[0032] S20: Disperse the nano metal oxide particles in a basic organic solvent to obtain a nano metal oxide particle dispersion;

[0033] S30. Adding the nano metal oxide particle dispersion to the nano metal particle solution, mixing for a predetermined time, and then adding higher alcohol to obtain a composite ink.

[0034] Specifically, inkjet printing technology, as an effective way for the industrialization and large-scale production of existing thin film display devices, can significantly increase the production capacity of thin film display devices and reduce their production costs. However, because inkjet printing equipment requires high physical and chemical properties of the ink, such as suitable boiling point, viscosity...

Embodiment 1

[0063] A composite ink includes nano zinc oxide particles and nano silver particles dispersed in ethanol and 1,4-butanediol. The preparation method of the composite ink includes:

[0064] Prepare 100ml of ethanol solution of nano zinc oxide particles with a concentration of 20mg / ml;

[0065] Prepare 10ml of ethanol solution of silver nanoparticles with a concentration of 3mg / ml;

[0066] Under vigorous stirring, add dropwise the ethanol solution of nano silver particles to the ethanol solution of nano zinc oxide particles, and continue stirring for 24 hours at room temperature to obtain nano silver particles-nano zinc oxide composite ink;

[0067] The nano-silver particle-nano-zinc oxide composite ink was washed three times with propanol, and then redispersed with ethanol, and 50ml of 1,4-butanediol was added dropwise to obtain a nanometer containing 1,4-butanediol. Silver particles-nano zinc oxide composite ink, the viscosity of the composite ink measured at 25° C. is 8.32 cP.

[0068...

Embodiment 2

[0074] A composite ink includes nano zinc oxide particles and nano gold particles dispersed in ethanol and 1,3-butanediol. The preparation method of the composite ink includes:

[0075] Prepare 100ml ethanol solution of nano zinc oxide particles with a concentration of 16mg / ml;

[0076] Prepare 10ml of ethanol solution of gold nanoparticles with a concentration of 20mg / ml;

[0077] Under vigorous stirring, add the ethanol solution of gold nanoparticles to the ethanol solution of nano zinc oxide particles dropwise, and continue stirring for 24 hours at room temperature to obtain nano gold particles-nano zinc oxide composite ink;

[0078] Wash the nano-gold particles-nano-zinc oxide composite ink 3 times with propanol, then redisperse it with ethanol, and add 50ml of 1,3-butanediol drop by drop to obtain nanometers containing 1,3-butanediol. Gold particle-nano-zinc oxide composite ink, the viscosity of the composite ink measured at 25° C. is 8.50 cP.

[0079] The above-mentioned nano-gol...

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Abstract

The invention discloses composite ink, a preparation method thereof, and a device. The composite ink includes nano metal particles and nano metal oxide particles, which are dispersed in a mixed solvent comprising a basic organic solvent and a higher alcohol solvent. The physical properties, such as viscosity, surface tension and boiling point, of the composite ink satisfy the present ink-jet printing equipment. After annealing and volatilization of the solvent, the nano metal oxide particles and nano metal particles can be separated into different phases, so that quenching of light emitted from the luminescent material is prevented. The nano metal particles in the composite ink have a surface-enhanced resonance effect so that light-emitting efficiency of the light emitting diode device isimproved significantly. The higher alcohol solvent can effectively avoid phenomena, such as ejection failure of a nozzle, non-uniform ink drips, smearing, coffee ring and the like, which are disadvantages of printing operation with the composite ink.

Description

Technical field [0001] The invention relates to the field of light-emitting diode devices, in particular to a composite ink and a preparation method and devices thereof. Background technique [0002] Surface plasma enhancement (SPE) is another special property of inorganic nanomaterials. For coin group metals, such as gold, silver or copper, its nano-sized particles will resonate with the excitation of external electromagnetic waves of specific wavelengths, thereby achieving the effect of enhancing the signal. Therefore, the nano-level metal particles can be widely used in photoelectric conversion devices. For example, for light-emitting display diodes, the surface enhancement effect brought by the nano-metal particles can be used to amplify the light emitted by semiconductor materials, thereby improving the device. The luminous efficiency. [0003] As a wide band gap material, zinc oxide has a band gap of about 3.37 eV at room temperature and high exciton binding energy, which i...

Claims

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Application Information

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IPC IPC(8): C09D11/38C09D11/36H01L51/50H01L51/54
Inventor 向超宇邓天旸李乐张滔辛征航张东华
Owner TCL CORPORATION
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