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RFID tag

A technology of RFID tags and antennas, applied in the field of RFID tags, can solve problems such as insufficient communication distance

Active Publication Date: 2018-12-21
SK ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned RFID tags cannot yet satisfy a sufficient communication distance, and there is room for improvement

Method used

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Examples

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Embodiment Construction

[0039] Hereinafter, a first embodiment of the RFID tag of the present invention will be described based on the drawings. exist Figure 1A 2 shows a passive type RFID tag 4 in which an antenna 3 is mounted on the outer peripheral edge of the upper surface of the IC chip 1 package (insulating layer made of resin) through the insulating layer 2 so as to be electrically conductive. .

[0040] The IC chip 1 is approximately square in plan view. In addition, the IC chip 1 can also be in the shape of a circle, an ellipse, or a polygon.

[0041] In addition, the IC chip 1 can use a chip of 0.5 mm square (0.5 mm long x 0.5 mm wide) to 0.9 mm square (0.9 mm long x 0.9 mm wide). IC chip 1 of width 0.9mm).

[0042] The IC chip 1 has connection terminals 5A, 5B, 5C, and 5D at four corners, and the four connection terminals 5A, 5B, 5C, and 5D are provided on the inner side of the outer peripheral edge.

[0043] Furthermore, among the four connection terminals, Figure 1A The two connect...

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Abstract

The present invention addresses the problem of providing a RFID tag with which the antenna efficiency can be improved with a simple configuration. The RFID tag is equipped with: an antenna 3 for transmitting and receiving signals between a reader and a writer; an IC chip 1 to which the antenna 3 is connected; multiple connection terminals 5A, 5B on an inside portion of an insulation layer on whichthe antenna 3 is formed, said portion being on the inside of the outer peripheral edge of the insulation layer; and an annular antenna formation region on the entire outer peripheral region or substantially the entire outer peripheral region on the insulation layer, the width thereof in the inside-outside direction being the distance between the multiple connection terminals 5A and 5B and the outer peripheral edge of the insulation layer. With the one connection terminal 5A among the multiple connection terminals as the starting point and the one connection terminal 5B among the remaining connection terminals being the ending point, the antenna 3 is formed as a loop antenna such that conductor lines circle around inside the antenna formation region.

Description

[0001] This application claims the priority of Japanese Patent Application No. 2016-082202, which is incorporated in the description of the specification of this application by reference. technical field [0002] The present invention relates to an RFID tag including an antenna for transmitting and receiving signals with a reader / writer in a non-contact manner. Background technique [0003] This RFID tag has an IC chip for recording information and an antenna connected to the IC chip. Furthermore, in the RFID tag, by performing wireless communication with the reader / writer through the antenna, the information stored in the IC chip can be read and the information can be written in the IC chip. [0004] In such RFID tags, there is an increasing demand for extremely small size in recent years, and as an extremely small RFID tag that responds to this demand, for example, the RFID tag disclosed in Patent Document 1 is known. The antenna of this RFID tag is composed of a multi-la...

Claims

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Application Information

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IPC IPC(8): H01Q7/00G06K19/077H04B5/02
CPCG06K19/07783G06K19/07794G06K19/07775G06K19/0724G06K19/07786G06K19/07754H01Q7/00H01Q1/2225H04B5/77H04B5/26H04B5/48G06K19/077
Inventor 小林英树
Owner SK ELECTRONICS