JP2005196445A - Rf tag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make an RF tag easily detectable even in the dark. <P>SOLUTION: The RF tag has an information recording function and a function allowing the information to be read with a reader device without contact, and is attached to an article. The RF tag contains a light-emitting material that emits light upon stimulated by light. The light-emitting material may be a fluorescent material that emits light only while being stimulated by light and that stops the emission as soon as stimulation by light ceases, or may be a phosphorescent material that continues to emit light for several minutes to several hours even in the absence of stimulation by light. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an RF tag.

  In recent years, an increasing number of companies are considering the use of RF (Radio Frequency) RF tags in place of nameplates such as metal stamps for the management of articles such as rental equipment, large-scale manufacturing facilities, and dies.

  Here, the RF tag is also called an RFID (Radio Frequency Identification) or a wireless IC tag, and has a function of recording information and a function of reading the information by a reader device in a non-contact manner. It can be attached to. Some RF tags have a function capable of recording information in a non-contact manner by a writer device. These functions are realized by electronic components such as an antenna and an IC chip.

  There are various RF tag shapes such as a label type, a card type, a coin type, and a stick type. The label type RF tag can be attached to an article.

  By changing to an RF tag instead of a nameplate, it is expected to be able to read information even if a large amount of information is recorded or dirt is attached, and which merits of information can be rewritten.

  By the way, in order to read the information of the RF tag, it is necessary to bring the reader device close to the readable distance of the RF tag. In a portable reader device, since this distance is generally 30 cm or less, in order to read information from an RF tag attached to a specific article, first, the position where the RF tag is attached is found. However, this is generally difficult when the goods are stored in a dark place, such as a dim warehouse.

  The present invention has been made in view of such background art, and an object thereof is to easily find an RF tag even in a dark place.

In order to achieve the above object in the present invention, first, in the invention of claim 1, an RF tag attached to an article having a function of recording information and a function of reading the information by a reader device in a non-contact manner Because
The RF tag is an RF tag including a luminescent material that emits light when stimulated by light.

  According to a second aspect of the present invention, there is provided the RF tag according to the first aspect, wherein a light emitting material is contained in a resin that seals the electronic component that realizes each of the functions.

  According to a third aspect of the present invention, the RF tag according to the first aspect is provided with a film containing the light-emitting substance on the surface.

  According to a fourth aspect of the present invention, there is provided the RF tag according to the third aspect, wherein a transparent layer is provided on the surface of the film containing the luminescent substance.

  According to a fifth aspect of the present invention, there is provided the RF tag according to any one of the first to fourth aspects, wherein the luminescent material is a fluorescent material.

  According to a sixth aspect of the present invention, there is provided the RF tag according to any one of the first to fourth aspects, wherein the luminescent material is a phosphorescent material.

  According to the first aspect of the present invention, when light is irradiated in a state of being attached to an article, the light emitting material emits light by the stimulation of the light, and this light emission is visually observed. The effect is that it can be easily found.

  According to the second aspect of the present invention, since the electronic component that realizes each function is sealed with a resin containing a light emitting substance, there is an effect that it can be easily manufactured.

  The invention of claim 3 has an effect that the main body may be opaque because there is a film containing a luminescent substance on the surface.

  According to the invention of claim 4, since the transparent layer is provided on the surface of the film containing the light emitting substance, there is an effect that the film containing the light emitting substance is protected.

  In the invention of claim 5, if spot light such as a flashlight is used in a dark place, only the RF tag irradiated with the spot light emits light. Therefore, the RF tag can be easily found based on the light emission. There is an effect that can be.

  According to the sixth aspect of the present invention, when it is dark, the RF tag can be made to emit light by lighting it once and then making it brighter. Then, the RF tag can be easily found based on the emitted light. There is an effect that can be done. In addition, in a place where bright and dark times are repeated, such as day and night, the RF tag emits light without irradiating light even in the dark time. There is an effect that it can be found.

  As described above, the present invention has an effect that the RF tag can be easily found even in a dark place.

  The best embodiment of the present invention will be described below.

  The RF tag of the present embodiment has a function of recording information and a function of reading the information by a reader device in a non-contact manner, and is attached to an article, and further emits light by light stimulation. Contains substances. These functions are realized by electronic components such as an antenna and an IC chip.

  When the RF tag of this embodiment is attached to an article and irradiated with light, the light emitting material emits light by the stimulation of the light, and this light emission is visually observed. Therefore, the RF tag emits light even in a dark place. In addition, there is an effect that the RF tag can be easily found.

  Phosphors that emit light only during light stimulation and stop emitting as soon as there is no light stimulus, and phosphors that continue to emit light for several minutes to hours even when there is no light stimulus There is.

In the case of a fluorescent substance, if spot light such as a flashlight is used in a dark place, only the RF tag irradiated with the spot light emits light. Therefore, the RF tag can be easily found based on the emitted light. There is an effect.

  In the case of a phosphorescent substance, when it is dark, it is possible to make the RF tag emit light by lighting it once and making it brighter, and then making it dark again, so it is possible to easily find the RF tag based on the emitted light. effective. In addition, in the case of phosphorescent substances, where the bright time and dark time are repeated, such as day and night, the RF tag emits light without irradiating light even in the dark time. There is an effect that the RF tag can be easily found.

  Hereinafter, the present embodiment will be described in detail by describing three examples.

  As shown in FIG. 1, the RF tag 11 according to the first embodiment includes an antenna 3 and an IC chip 2 sealed with a resin 1 containing a light emitting substance, and an adhesive layer 4 on the back surface of the resin 1 containing the light emitting substance. Is provided.

  As shown in FIG. 2, the RF tag 11 of Example 1 is attached to the article 5 through the adhesive layer 4.

  The RF tag 11 according to the first embodiment has an effect that the antenna 3 and the IC chip 2 are sealed with the resin 1 containing a light emitting substance, and thus can be easily manufactured.

  As shown in FIG. 3, the RF tag 12 of Example 2 seals the antenna 3 and the IC chip 2 with a resin 6, and provides an adhesive layer 4 on the back surface of the resin 6. A film 7 containing a luminescent material is provided. The film 7 containing a luminescent material may be provided by coating or printing.

  The RF tag 12 of Example 2 is also attached to the article 5 via the adhesive layer 4 as shown in FIG.

  The RF tag 12 of Example 2 has an effect that the resin 6 may be opaque because the film 7 containing a light emitting substance is provided on the surface of the resin 6.

  As shown in FIG. 5, the RF tag 13 according to the third embodiment seals the antenna 3 and the IC chip 2 with a resin 6, and provides an adhesive layer 4 on the back surface of the resin 6. A film 7 containing a luminescent substance is provided, and a transparent layer 8 is provided on the surface of the film 7 containing a luminescent substance.

  The RF tag 13 of Example 3 is also attached to the article 5 via the adhesive layer 4 as shown in FIG.

  The RF tag 13 of Example 3 has an effect that the film 7 containing the luminescent substance is protected because the transparent layer 8 is provided on the film 7 containing the luminescent substance.

Sectional drawing showing Example 1 of this invention. Sectional drawing when Example 1 of the present invention is attached to an article. Sectional drawing showing Example 2 of this invention. Sectional drawing when Example 2 of the present invention is attached to an article. Sectional drawing showing Example 3 of this invention. Sectional drawing when Example 3 of the present invention is attached to an article.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Resin 2 containing luminescent substance ... IC chip 3 ... Antenna 4 ... Adhesive layer 5 ... Article 6 ... Resin 7 ... Film 8 containing luminescent substance ... Transparent layer 11 ... RF tag 12 of Example 1 ... Example 2 RF tag 13: RF tag of Example 3

Claims (6)

An RF tag having a function of recording information and a function of reading the information by a reader device in a non-contact manner and attached to an article,
The RF tag includes a luminescent material that emits light when stimulated by light.   2. The RF tag according to claim 1, wherein a light-emitting substance is contained in a resin that seals the electronic component that realizes each function.   The RF tag according to claim 1, further comprising a film containing the light emitting substance on a surface.   The RF tag according to claim 3, further comprising a transparent layer on a surface of the film containing the light emitting substance.   The RF tag according to claim 1, wherein the luminescent material is a fluorescent material.   The RF tag according to claim 1, wherein the light emitting substance is a phosphorescent substance.

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