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A method of low temperature inkjet printing nano metal pattern

An inkjet printing and nano-metal technology, applied in the post-processing, printing, copying/marking methods, etc., can solve the problems of inkjet printing pattern disconnection, poor surface roughness, low yield rate, etc., to avoid The effect of ink bulge, improving conductivity and improving product yield

Active Publication Date: 2018-11-06
GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for low-temperature ink-jet printing of nano-metal patterns, which aims to solve the problem of high-temperature heating of the substrate in jet printing in order to avoid coffee rings and ink bulges in the existing ink-jet printing technology; and Because the printing temperature of the existing ink is close to or even higher than the sintering temperature of the nanoparticles inside the ink, the nanoparticles are gathered on the surface of the ink, and the surface is sintered and solidified during the subsequent sintering annealing process, so that part of the ink is bound inside the pattern and cannot be processed in time. Eliminate the problems of disconnection, poor surface roughness, increased resistivity and low yield of inkjet printed patterns after sintering and annealing

Method used

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  • A method of low temperature inkjet printing nano metal pattern
  • A method of low temperature inkjet printing nano metal pattern
  • A method of low temperature inkjet printing nano metal pattern

Examples

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Embodiment 1

[0058] A method for low-temperature ink-jet printing of amorphous silicon nano metal patterns includes the following steps:

[0059] S11. Disposing the printing ink, the volume ratio of the ink main body and the Marragoni initiating solvent B is about 7:3 configuration. Wherein, the ink body A is a self-prepared ink, and the diameter of the nanoparticles in the ink is 3-10 nm. Wherein, the main solvent in the ink main body A is deionized water with a boiling point of about 100° C. and a liquid surface tension of about 72 mN / m. The saturated vapor pressure of deionized water at room temperature 20°C is 2.3kPa. The additive solvent B is ethylene glycol, which has a boiling point of about 190°C and a surface tension of about 50 mN / m, and a saturated vapor pressure of 6 Pa at room temperature of 20°C. The Maragoni initiating solvent B is ethylene glycol (the boiling point of glycol alkane is about 190°C, the surface tension of the liquid is about 50 mN / m, and the saturated vapor pr...

Embodiment 2

[0066] A method for low-temperature ink-jet printing of nano metal patterns includes the following steps:

[0067] S21. Configure the printing ink, the volume ratio of the ink main body and the Maragonil initiating solvent B is about 8:2. Wherein, the ink body A is a self-prepared ink, and the diameter of the nanoparticles in the ink is 3-10 nm. Wherein, the main solvent in the ink main body A is deionized water with a boiling point of about 100° C. and a liquid surface tension of about 72 mN / m. The saturated vapor pressure of deionized water at room temperature 20°C is 2.3kPa. Adding solvent B is diethylene glycol diethyl ether, which has a boiling point of about 180°C and a surface tension of about 27 mN / m, and a saturated vapor pressure of 48 Pa at room temperature of 20°C. The Maragoni initiating solvent B is diethylene glycol diethyl ether (the boiling point of diethylene glycol diethyl ether is about 180° C., the liquid surface tension is about 27 mN / m, and the saturated ...

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Abstract

The invention is suitable for the field of printing electronics, and provides a method for low-temperature ink-jet printing of a nano-metal pattern. The method comprises the following steps: carrying out ink-jet printing on a substrate by using ink under a negative pressure condition to obtain an ink-jet printed pattern, wherein the ink includes a main body solvent A and a Marangoni initiation solvent B; placing the ink-jet printed pattern in vacuum environment, and carrying out primary drying treatment, wherein the pressure P2 of the vacuum environment and the saturated vapor pressure PB of the Marangoni initiation solvent B meet a formula of P2 - PB >= 1000 Pa; adjusting the relative vacuum degree to -0.08 ~ -0.1 MPa, and carrying out secondary drying treatment, wherein the temperature T2 of the vacuum drying treatment is smaller than the sintering temperature Ts of nano-metal particles in the ink; sintering the vacuum-dried ink-jet printed pattern in vacuum environment; and annealing the sintered ink-jet printed pattern in the vacuum environment.

Description

Technical field [0001] The invention belongs to the field of printed electronics, and particularly relates to a method for low-temperature inkjet printing of nano metal patterns. Background technique [0002] Compared with traditional processes, inkjet printed electronic products have attracted more and more attention from manufacturers due to their large area, flexibility, and low cost that silicon-based microelectronics do not have. However, as an emerging technology, the printing process of inkjet printing electronics and its product performance have become a bottleneck restricting the development of inkjet printing electronics. Although researchers have made improvements in materials and inkjet equipment, the line segment morphology and surface flatness of inkjet printing patterns have not been able to meet the performance requirements of electronic products. [0003] In the existing inkjet printing process, in order to avoid the coffee ring and ink bulging in the inkjet print...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M5/00B41M7/00C09D11/30
Inventor 李耘付东
Owner GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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