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A flexible and stretchable electronic label and its preparation method

A technology of an electronic label and a manufacturing method, applied in the field of radio frequency identification, achieves the effects of strong resistance to peeling and damage, simple and efficient manufacturing process, and low energy consumption

Inactive Publication Date: 2017-01-04
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such demands cannot be met by traditional resin films or paper substrates plus metal etching or printed antennas.

Method used

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  • A flexible and stretchable electronic label and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Place a mask plate engraved with a hollow pattern of antenna lines on the glass substrate, spray the ethanol solution containing silver nanowires evenly on the surface of the mask plate with a spray gun, and remove the mask after the ethanol solution containing silver nanowires is completely dry plate, to obtain a metal nanoantenna 1 attached to a silver nanowire antenna circuit on the substrate; the circuit pattern of the metal nanowire antenna 1 is provided with a chip connection;

[0029] 2. Paste the chip 2 upside down on the chip connection of the metal nano-antenna 1, so that the chip contacts are electrically connected to the antenna;

[0030] 3. Pouring two-component addition-type silica gel (silica gel and crosslinking agent prepared at a weight ratio of 10:1) onto the substrate so that it completely covers the metal nanoantenna 1;

[0031] 4. Put the whole substrate into an oven and bake at 150°C for 20mins to completely cure the two-component addition-type...

Embodiment 2

[0035] 1. Place a mask plate engraved with a hollow pattern of antenna lines on the stainless steel substrate, spray the aqueous solution containing silver nanowires evenly onto the surface of the mask plate by casting method, and remove the mask after the aqueous solution containing silver nanowires is completely dry plate, to obtain a metal nanoantenna 1 attached to a silver nanowire antenna circuit on the substrate; the circuit pattern of the metal nanowire antenna 1 is provided with a chip connection;

[0036] 2. Paste the chip 2 upside down on the chip connection of the metal nano-antenna 1, so that the chip contacts are electrically connected to the antenna;

[0037] 3. Pouring one-component RTV silica gel onto the substrate so that it completely covers the metal nanoantenna 1;

[0038] 4. Put the whole substrate at room temperature for 12 hours, so that the vulcanized silica gel is completely cured to form a silica gel matrix 3;

[0039] 5. Remove the silicone substrat...

Embodiment 3

[0042] 1. Place a mask plate engraved with a hollow pattern of antenna lines on the glass substrate, spray the ethanol solution containing copper nanowires evenly on the surface of the mask plate with a spray gun, and remove the mask after the ethanol solution containing copper nanowires is completely dry plate, to obtain a metal nanoantenna 1 attached to a copper nanowire antenna circuit on the substrate; the circuit pattern of the metal nanowire antenna 1 is provided with a chip connection;

[0043] 2. Paste the chip 2 upside down on the chip connection of the metal nano-antenna 1, so that the chip contacts are electrically connected to the antenna;

[0044] 3. Pouring two-component condensation silica gel (silica gel and crosslinking agent prepared at a weight ratio of 5:1) onto the substrate so that it completely covers the metal nanoantenna 1;

[0045] 4. Put the substrate as a whole into an oven and bake at 120°C for 30mins to completely cure the two-component condensati...

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Abstract

A flexible extensible electronic tag is composed of a flexible silica gel substrate, a metal nanowire antenna circuit and chips. The metal nanowire antenna circuit is embedded in the silica gel substrate, and the chips are embedded in the silica gel substrate and electrically connected with the metal nanowire antenna circuit. The manufacturing method includes the steps that a metal nanowire antenna with the metal nanowire antenna circuit is manufactured on a base plate; chip contacts are reversely attached to the chip joints of the metal nanowire antenna, and then the chips are electrically connected with the metal nanowire antenna circuit; silica gel is poured on the base plate to cover the antenna and the chips; the base plate is placed in a drying oven, baked and solidified to form the silica gel substrate; the silica gel substrate is taken down from the base plate and cut to form the flexible extensible electronic tag. Due to the large slenderness ratio effect of metal nanowires and the good ductility of the silica gel substrate, the electronic tag can have the flexible extensible function and is particularly suitable for the field of elastic substances such as clothes and other deformable materials. The flexible extensible electronic tag is simple in structure and simple in manufacturing steps, saves energy, has the advantages of being washable and durable, resisting solvents and the like, and has wide application prospects.

Description

[0001] Technical field: [0002] The invention relates to the field of radio frequency identification, in particular to a flexible and stretchable electronic label and a preparation method thereof. [0003] technical background: [0004] As an important information carrier in the development of the Internet of Things, electronic tags have been widely used in various fields. Due to its fast, non-contact reading and the ability to read multiple label information at the same time, the electronic label provides a more high-quality and efficient solution than the traditional barcode system for many fields such as warehousing, logistics, clothing, and food, greatly improving Improve production and management efficiency and save labor costs. Most of the currently used electronic tags are etched metal antenna electronic tags and silver paste printed antenna electronic tags, and the substrates used are mostly thermosetting resin films or paper such as PET. These substrates have good d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/077
Inventor 付绍云黄贵文
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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