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High resolution inkjet printing method

An inkjet printing, high-resolution technology, applied in the field of circuit printing, can solve the problems of no potential for large-scale industrialization, low efficiency, and high production costs, and achieves a reduction in the probability of accidental short circuits, short contact time, and simple methods. Effect

Active Publication Date: 2021-11-05
广东绿展科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem with this technology is that this fine hydrophilic-hydrophobic structure is generally completed by exposure / development methods, which is expensive to prepare, or inefficient, and has no potential for large-scale industrialization

Method used

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  • High resolution inkjet printing method

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Experimental program
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Effect test

preparation example Construction

[0081] The invention realizes dry printing in the preparation of hydrophilic and hydrophobic graphics, that is, no ink is needed at all, and graphic aliasing caused by spontaneous movement of ink is fundamentally avoided. Moreover, the present invention adopts dry printing to form hydrophilic and hydrophobic patterns, and the line width of the hydrophilic and hydrophobic patterns is less than 1 mm, even as small as 1-50 μm, which can realize the printing of fine circuits with high resolution.

[0082] S104. Select ink containing conductive nanoparticles, and perform inkjet printing on the substrate with hydrophilic and hydrophobic patterns.

[0083] Those skilled in the art know that compared with parallel thin lines, the difficulty of inkjet printing high-resolution complex graphics containing intersection points will be significantly increased. The reason is that low-viscosity inks move spontaneously, or shrink spontaneously due to surface tension. Taking the triangular pat...

Embodiment 1

[0119] (1) select a seal made of silicone rubber containing -O-Si-R groups, and the seal is made of polydimethylsiloxane;

[0120] (2) Use glass as the substrate;

[0121] (3) The substrate is subjected to strong oxidation treatment for 5-50 minutes (preferred time is 30 minutes) with the highly active ozone component produced by the ultraviolet cleaning machine, so that active Si-O-(H) groups are formed on the surface of the substrate group;

[0122] (4) Within 1s after the end of the strong oxidation treatment, quickly roll the printing roller with the stamp fixed on the surface of the substrate with Si-O-(H) groups, and limit the contact pressure to about 1000Pa . The rolling speed is 50 mm / s, and the average contact time between the stamp and the surface of the substrate is approximately 1 ms based on the calculation that the width of the contact area between the printing roller and the plane is 50 microns. Changing the water contact angle of the substrate from about 15...

Embodiment 2

[0128] (1) Select a seal made of silicone rubber containing -O-Si-R groups for use, and the seal is made of methyl vinyl silicone rubber;

[0129] (2) Use glass as the substrate;

[0130] (3) Perform strong oxidation treatment on the substrate, the specific details are: the substrate is treated with an atmospheric pressure plasma treatment spray gun, and the average treatment time is 3-5s. Form active Si-O-(H) groups on the substrate surface;

[0131] (4) Within 30s after the strong oxidation treatment, quickly roll the stamp roller fixed with the stamp over the surface of the substrate with Si-O-(H) groups, and limit the contact pressure to about 2000Pa. The rolling speed is 5 mm / s, and the average contact time between the stamp and the surface of the substrate is approximately 10 ms based on the calculation that the width of the contact area between the printing roller and the plane is 50 microns. This treatment changes the water contact angle of the substrate from about 2...

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Abstract

The invention discloses a high-resolution inkjet printing method, comprising: (1) performing strong oxidation treatment on a substrate having a Si-O structure, so that active Si-O-(H) groups are formed on the surface of the substrate ; (2) within the preset time after the strong oxidation treatment, the stamp containing the -O-Si-R group is brought into contact with the substrate surface with the Si-O-(H) group; (3) the The stamp is separated from the substrate with the Si-O-(H) group to obtain a hydrophilic and hydrophobic pattern capable of printing fine circuits; (4) select the ink containing conductive nanoparticles for use on the substrate with the hydrophilic and hydrophobic pattern Inkjet printing on. By adopting the invention, a large number of hydrophilic and hydrophobic patterns can be copied at low cost, and then the spontaneous movement of conductive ink before drying can be controlled, thereby obtaining finer conductive patterns and reducing the probability of accidental short circuit.

Description

technical field [0001] The invention relates to the technical field of circuit printing, in particular to a high-resolution inkjet printing method. Background technique [0002] The integrated and low-cost manufacturing of circuits is the main trend of industrial development. The printing processing method has its unique advantages in the manufacture of some electronic products with its simplified process and low cost. It is expected to be used in some circuits with low integration. widely used in manufacturing. For example, screen printing electrodes have become the standard process for photovoltaic cell production all over the world, and inkjet printing has become the mainstream technology for flexible OLED thin film packaging. [0003] In the past few decades, integrated circuits (including circuit boards and chips, etc.) have mainly subtractive standard processes, including a series of complex processing steps such as photolithography, development, and etching. Good pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K3/12B41M3/00B41M5/00C09D11/36C09D11/38C09D11/52
CPCB41M3/00B41M5/0047C09D11/36C09D11/38C09D11/52H05K3/125
Inventor 林剑马昌期曾超邢建博
Owner 广东绿展科技有限公司
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