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Method for preparing conductive circuit of lead wire of touch screen

A technology of touch screen leads and conductive lines, which is applied in directions such as conductive pattern formation, can solve problems such as high cost and complicated process, and achieve the effects of low cost and simple process

Active Publication Date: 2017-11-10
SHENZHEN SUCCESS ELECTRONICS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a conductive circuit of a touch screen lead, which aims to solve the problems of complicated process and high cost in the preparation method of the conductive circuit of a touch screen lead in the prior art

Method used

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Examples

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Effect test

preparation example Construction

[0031] The preparation method of the conductive circuit of the lead wire of the touch screen provided by the embodiment of the present invention includes the following steps:

[0032] Prepare conductive ink, provide nano-copper alloy powder and use the nano-copper alloy powder to prepare the conductive ink;

[0033] Printing the lead circuit pattern, providing a touch screen substrate, printing the conductive ink onto the touch screen substrate and forming the lead circuit pattern on the touch screen substrate;

[0034] Lead conductive lines are formed, and the pattern of the lead lines is sintered to form the lead conductive lines.

[0035] The method for preparing the conductive circuit of the lead wire of the touch screen provided by the embodiment of the present invention uses the nano-copper alloy powder to prepare conductive ink, and prints the conductive ink on the touch screen substrate by a precise printing method to form a fine circuit pattern, and The circuit patte...

Embodiment 1

[0064] This embodiment provides a method for preparing a conductive circuit of a lead wire of a touch screen. The method uses a nano-copper alloy to prepare a conductive circuit of a lead wire of a touch screen, and includes the following steps:

[0065] Prepare nano-copper conductive ink, specifically, provide nano-copper-silver particles, the size of the nano-copper-silver particles is 10-100 nanometers, and provide a solvent composed of water, isopropanol, ethylene glycol ether and methyl ethyl ketone, the The nano-copper-silver particles are mechanically mixed with a solvent in a certain proportion and dispersed evenly by ultrasonic waves to make a paste-like conductive ink;

[0066] A piezoelectric inkjet printer is used to print paste-like conductive ink onto a touch screen substrate to prepare a circuit pattern with a line width of 50 microns, and the touch screen substrate is a glass substrate;

[0067] The printed circuit pattern is thermally sintered. Specifically, t...

Embodiment 2

[0069] This embodiment provides a method for preparing a conductive circuit of a touch screen lead, which uses a nano-copper-silver alloy to prepare a touch screen lead circuit, and includes the following steps:

[0070] Prepare nano-copper-silver alloy conductive ink, specifically, provide nano-copper-silver alloy particles, UV curable resin and solvent, by weight, with 64 parts of nano-copper-silver alloy particles, 6 parts of UV curable resin and 30 parts of volatile solvent Mechanical mixing, and ultrasonic dispersion is used while stirring to make slurry conductive ink;

[0071] Using gravure offset printing equipment to print the conductive ink onto the touch screen substrate, the width of the printed circuit pattern is 25 microns, and the touch screen substrate is a PET substrate;

[0072] The printed circuit pattern is subjected to photo-sintering. Specifically, the formed circuit pattern is put into a photo-sintering device. The energy of the electromagnetic wave is g...

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Abstract

The invention is suitable for touch screen manufacturing field, provides a manufacturing method of a touch screen lead wire conducting circuit and aims at solving the problem that an existing manufacturing method of the touch screen lead wire conducting circuit in the prior art is complicated in process and high in cost. The method comprises the following steps of preparing conducting ink, namely providing nano copper alloy powder and adopting the nano copper alloy powder to prepare the conducting ink; printing lead wire circuit patterns, namely providing a touch screen substrate, adopting a printing mode to print the conducting ink on the touch screen substrate and forming lead wire circuit patterns on the touch screen substrate; forming the lead wire conducting circuit, namely performing sintering treatment on the lead wire circuit patterns to form the lead wire conducting circuit. The nano copper alloy powder is utilized to prepare the conducting ink so as to print the conducting ink on the touch screen substrate to form the conducting circuit, a process is simple, the 2 / 3 material cost can be directly reduced, meanwhile waste water pollution caused by an etching process can be avoided, and the method is an environment-friendly energy-saving green manufacturing technology.

Description

technical field [0001] The invention belongs to the field of touch screen preparation, in particular to a preparation method of a touch screen lead conductive circuit. Background technique [0002] Due to the intelligent and humanized development of communication electronics, touch panels (Touch Panel, TP for short) have been widely used. Touch screens are mainly used in mobile phones, tablet computers, digital cameras, camcorders, e-readers, game consoles and other electronic products. It is estimated that the annual domestic mobile phone shipments will increase from 150 million in 2006 to 250 million in 2020 , and touch screen mobile phones account for a considerable proportion of the entire mobile phone shipments. [0003] In the process of manufacturing a touch screen mobile phone, the preparation of the touch screen is one of the key steps. The conductive lines of touch screen leads require low resistivity and fine lines. On high-end touch screen mobile phones, the li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K3/12
Inventor 王彬左洪吴晓丽张朵黄效牛夏彬周诗博刘作为
Owner SHENZHEN SUCCESS ELECTRONICS LTD