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Conductive ink, transparent conductor and preparation method thereof

A technology of transparent conductors and conductive inks, applied in inks, household appliances, applications, etc., can solve the problems of uneven filling thickness of conductive materials, breakage of conductive layer wires, difficulty in ensuring production yield, etc., to improve production efficiency and yield. Effect

Active Publication Date: 2013-11-27
ANHUI JINGZHUO OPTICAL DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, current conductive inks generally use small molecule organic solvents (such as ethanol, etc.) or water solvents as solvents. During the production process, conductive inks volatilize with the solvent when filling the grooves and curing, and the conductive materials are affected by the surface tension of the liquid when curing. Cracking occurs due to the influence of internal stress and internal stress, resulting in the cured conductive layer prone to wire breakage or uneven filling thickness of conductive materials resulting in different overall square resistance
Multiple times of filling and sintering can avoid the above problems to a certain extent, but it will reduce the production efficiency and it is difficult to ensure the production yield

Method used

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  • Conductive ink, transparent conductor and preparation method thereof
  • Conductive ink, transparent conductor and preparation method thereof
  • Conductive ink, transparent conductor and preparation method thereof

Examples

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preparation example Construction

[0088] The preparation method of the above-mentioned transparent conductor uses conductive graphite that does not contain organic solvents to fill the grid grooves in the medium layer, and the conductive ink is cured to form a conductive layer embedded in the medium layer. The above-mentioned conductive ink has a high solid content and does not contain organic solvents. Using this conductive ink can realize that the conductive layer formed after one-time filling and curing can fill the grid grooves without multiple fillings, thereby improving yield and efficiency.

[0089] Moreover, this preparation method is manufactured by embossing process and filling process. Compared with the traditional ITO film as the conductive layer process, the conductive layer can be formed in one step, the process is simple, and expensive equipment such as sputtering and evaporation is not required. High efficiency, suitable for large area and mass production. In addition, the cost of materials is ...

Embodiment 1

[0093] Preparation of transparent conductors

[0094] (1) Provide a transparent substrate, coat the dielectric material on the transparent substrate, and form a dielectric layer laminated on the transparent substrate after curing; where the transparent substrate is a polyethylene terephthalate (PET) resin substrate, the transparent substrate The thickness is 0.02 mm, the material of the dielectric layer is polymethyl methacrylate (PMMA) UV glue, and the thickness of the dielectric layer is 3 microns;

[0095] (2) Use an imprint template to imprint on the dielectric layer and UV-cure to form grid grooves, and the groove depth of the grid grooves is 2 microns;

[0096] (3) Fill the grid groove with conductive ink, irradiate with ultraviolet light with a wavelength of 365 nm, and the irradiation energy is 600mj / cm 2 . After the conductive ink is cured, a conductive layer embedded in the medium layer is formed to obtain a transparent conductor; wherein, the thickness of the cond...

Embodiment 2

[0098] (1) Provide a transparent substrate, coat the dielectric material on the transparent substrate, and form a dielectric layer laminated on the transparent substrate after curing; wherein, the transparent substrate is a glass substrate, the thickness of the transparent substrate is 1.2 mm, and the material of the dielectric layer is poly Methyl methacrylate (PMMA) UV glue, the thickness of the dielectric layer is 10 microns;

[0099] (2) Emboss and UV-cure the dielectric layer with an embossing template to form grid grooves, and the groove depth of the grid grooves is 5 microns;

[0100] (3) Fill the grid grooves with conductive ink, and irradiate with ultraviolet light with a wavelength of 365 nanometers, and the irradiation energy is 800mj / cm 2 . After the conductive ink is cured, a conductive layer embedded in the medium layer is formed to obtain a transparent conductor; wherein, the thickness of the conductive layer is 5 microns, and the conductive ink includes the fo...

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Abstract

The invention relates to conductive ink, a transparent conductor and a preparation method thereof. The conductive ink comprises the following ingredients in parts by mass: 50-90 parts of metallic conductive agent, 10-30 parts of organic monomers, 0.1-10 parts of diluent, 0.1-5 parts of photoinitiator and 0.1-5 parts of stabilizer. According to the conductive ink, organic solvents are not adopted as solvents, so that the phenomenon of cracking due to the volatilization of the organic solvents during use can be avoided, and repeated filling and sintering are not required; and the conductive ink can be used for producing precise conducting wires, and the efficiency and yield of preparation are increased.

Description

technical field [0001] The invention relates to the field of optoelectronic technology, in particular to a conductive ink, a transparent conductor and a preparation method thereof. Background technique [0002] Transparent conductors (including transparent conductive film and transparent conductive glass, etc.) are more and more widely used as transparent electrodes in touch screens, display screens and transparent electromagnetic shielding due to their high light transmittance and good conductivity. Materials and other optoelectronic products. [0003] At present, indium tin oxide (ITO) is widely used as a conductive material for transparent conductors. Because of its stable structure, good balance between transmittance and sheet resistance, and relatively simple manufacturing process, it is widely used. However, indium is a rare earth metal with very little stock in nature, and the cost of indium material has risen sharply in recent years, and if it is necessary to achiev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/10
Inventor 唐根初董绳财刘伟唐彬
Owner ANHUI JINGZHUO OPTICAL DISPLAY TECH CO LTD