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RFID label antenna preparation method based on liquid drop micro-injection

A technology of RFID tags and micro-spraying, applied in the direction of antenna supports/installation devices, etc., can solve the problems of high equipment requirements, high cost, complicated preparation process, etc., and achieve the effect of uniform conductivity, low cost, and simple preparation process

Inactive Publication Date: 2015-10-28
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the disadvantages of the existing RFID tag antenna preparation method, such as complex preparation process, high equipment requirements, and high cost, the purpose of the present invention is to provide a RFID tag antenna preparation method with simple structure, low cost, and convenient preparation of any antenna pattern

Method used

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  • RFID label antenna preparation method based on liquid drop micro-injection
  • RFID label antenna preparation method based on liquid drop micro-injection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The specific steps for preparing the RFID tag antenna 13 are as follows:

[0034] Step 1 Clean treatment of PET film substrate 10: Put the PET film in a beaker, pour an appropriate amount of concentrated sulfuric acid, heat it on a heating furnace for 10 minutes, then take it out and cool it for 10 minutes, then rinse the remaining surface of the PET film with deionized water Concentrated sulfuric acid. Wipe it dry with a cotton ball and put it into a beaker containing acetone, then place the beaker in an ultrasonic cleaner and shake for 10 minutes, take it out, rinse it with deionized water, and blow dry its surface moisture with nitrogen, such as figure 2 shown in a.

[0035] Step 2 Preparation of the hydrophobic coating 11 on the surface of the PET film substrate: first prepare a perfluoroalkyl acrylate hydrophobic solution with a concentration of 0.05w%, then put the cleaned PET film into the hydrophobic solution, and use the pulling method to remove the PET film Remo...

Embodiment 2

[0040] The specific steps for preparing the RFID tag antenna pattern 13 are as follows:

[0041] Steps 1 and 2 are the same as steps 1 and 2 described in Example 1

[0042] Step 3 Preparation of internal biconical glass micro-nozzle 6: using the internal bi-conical glass micro-nozzle preparation method to prepare internal bi-conical glass micro-nozzle with an inner diameter of 60 μm, and using the principle of capillary phenomenon The silver conductive ink is loaded into the double cone glass micro-nozzle 6 inside.

[0043] Steps 4 and 5 are the same as steps 4 and 5 described in Example 1. An RFID tag antenna with a line width of 230 μm and a resistivity of 4.2 μΩ·cm after curing can be obtained. Such as figure 2 Shown in d.

Embodiment 3

[0045] The specific steps for preparing the RFID tag antenna pattern 13 are as follows:

[0046] Steps 1, 2, 3 are the same as steps 1, 2, and 3 described in Example 2

[0047] Step 4 Set the driving voltage amplitude of the piezoelectric actuator 3 to 40V, the driving frequency to 2Hz, set the motion parameters of the two-dimensional worktable 9 so that the droplet overlap rate is 40%, and the motion pattern of the worktable 9 selects the bending dipole Sub-antenna pattern. Drive the internal biconical glass micro-nozzle 6 to micro-spray the nano silver conductive ink onto the hydrophobic coating 11 to obtain the RFID tag antenna pattern 12, and the line width of the prepared RFID tag antenna pattern 12 is 130μm, such as figure 1 , 2 c is shown.

[0048] Step 5 is the same as step 5 described in Example 1. An RFID tag antenna with a line width of 134μm and a resistivity of 4.8μΩ·cm after curing can be obtained. Such as figure 2 Shown in d.

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Abstract

The invention discloses an RFID label antenna preparation method based on liquid drop micro-injection. The preparation method comprises the following steps: a hydrophobic coating layer is prepared on a PET film substrate surface by utilization of a pulling method; an RFID label antenna pattern is prepared through a liquid drop micro-injection method; the substrate prepared with the RFID label antenna pattern is placed in a constant temperature drying box and is subjected to sintering, and a cured RFID label antenna is prepared. Only one step is needed for the RFID label antenna pattern preparation process, the cost is low, a special template is not needed, and RFID label antennas with any patterns can be prepared.

Description

Technical field [0001] The invention relates to a method for preparing an RFID tag antenna, in particular to a method for preparing an RFID tag antenna based on droplet micro-jetting, and belongs to the field of printed electronics. Background technique [0002] RFID technology is a non-contact automatic identification technology that uses radio waves for communication. With the rapid development of information technology, RFID technology has been widely used in various fields such as production management, medical health, traffic management, and logistics supply chain. The RFID tag antenna is an electronic circuit designed according to the functions required by radio frequency identification, and its performance has an important impact on the performance of the RFID system. [0003] At present, the preparation methods of RFID tag antenna mainly include etching method, electroplating method and conductive ink printing method. Among them, the etching method has problems such as hig...

Claims

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Application Information

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IPC IPC(8): H01Q1/22
Inventor 朱丽杨利军朱晓阳杨眉李宗安章维一
Owner NANJING UNIV OF SCI & TECH
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