JP2007164649A - Luminous non-contact ic tag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminous non-contact IC tag which performs promptly reading and writing at its identified location even in a dark place without illumination or during night. <P>SOLUTION: The non-contact IC tag 1 comprises an IC chip 3 with a storage function capable of reading information by non-contact, and an antenna pattern for transmitting/receiving electromagnetic waves, which are connected on a base film 11. Also, the non-contact IC tag 1 has a surface protection sheet 4 on an antenna pattern surface 2 of the base film 11. The non-contact IC tag is characterized by having a printing layer by printing ink containing a luminous florescent substance 10 on the surface protection sheet 4 or the base film 11 on the whole surface or a part. The luminous florescent substance 10 is optionally kneaded on the surface protection sheet or the base film 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a luminous non-contact IC tag. Specifically, the surface protection sheet of the non-contact IC tag or the printing ink containing the phosphorescent phosphor is printed on the base film, or the phosphor is kneaded into the sheet or the like to emit light in the night or in the dark. The present invention relates to a technology for facilitating tag handling. The luminous non-contact IC tag of the present invention is used as a normal non-contact IC tag. In particular, a business using a non-contact IC tag regardless of day or night, a warehouse or a construction site where a lot of work is performed in a dark place, nighttime It can be suitably used for patrol monitoring work and the like.
The technical field of the present invention relates to the manufacture and use of non-contact IC tags, and the main fields of use are fields such as transportation and distribution, warehouse management, construction sites, and patrol monitoring work.

Non-contact IC tags record and hold information and can exchange information by communicating with external devices in a non-contact manner, so they are widely used as a recognition medium in transportation and logistics, or for various purposes such as product quality control and inventory management. It has come to be.
However, when reading or writing a non-contact IC tag is performed in a dark place, it is difficult to confirm the position, which may hinder the reading operation. Originally, the work should be performed brightly. However, there is a case where it is necessary to quickly identify a product in a work in a stock yard or the like, and that lighting is turned on every time becomes a cost and a work load. In some places, a certain level of brightness cannot be obtained at night.

In such a case, if the non-contact IC tag has a light-emitting printed layer of the entire surface or pattern of the phosphorescent phosphor, or a substrate kneaded with the phosphorescent phosphor, the accumulated light is at night or in a dark place. Since the afterglow emits itself, the location of the non-contact IC tag can be clearly recognized. Thereby, it is possible to reduce the work load and perform reliable work.
The present invention proposes such a non-contact IC tag.

  Prior art relating to such a technique cannot be detected, but there are Patent Document 1 and Patent Document 2 for printing a barcode with a fluorescent pigment or fluorescent dye. However, fluorescent pigments and fluorescent dyes are not suitable for the above-described use of non-contact IC tags because light emission does not last in the dark. Patent Document 3 describes that the unique information is printed on the IC card with a fluorescent light substance. However, it is considered that the livestock substance used only for printing the unique information has insufficient brightness, and when used for a non-contact IC tag, the location cannot be confirmed in a dark place. Patent Document 4 and Patent Document 5 describe using a phosphorescent pigment for a card, but are not related to a non-contact IC tag and have a different configuration from the present application.

Japanese Utility Model Publication No. 61-119521 JP 61-162419 A JP 2003-91711 A JP 9-315045 A JP 9-315047 A

Since conventional non-contact IC tags do not give special consideration to handling in a dark place, they often cannot be handled efficiently at night or in places where lighting is insufficient.
Therefore, in the present invention, a non-contact IC tag is provided with a printing layer made of a printing ink containing a phosphorescent phosphor, or the film itself constituting the noncontact IC tag is used by kneading phosphorescent phosphor. By trying to emit light in a dark place, the location is clarified and an attempt is made to solve such a problem.

  The first of the gist of the present invention for solving the above problems is that an IC chip with a storage function capable of reading information in a non-contact manner and an antenna pattern for transmitting and receiving electromagnetic waves are electrically connected on a base film, A non-contact IC tag having a surface protection sheet on the antenna pattern surface, wherein the surface protection sheet has a printing layer made of printing ink containing a phosphorescent phosphor on the entire surface or a part thereof, It is in.

  The second of the gist of the present invention for solving the above problems is that an IC chip with a memory function capable of reading information in a non-contact manner and an antenna pattern for transmitting and receiving electromagnetic waves are electrically connected on the base film, A non-contact IC tag having a transparent surface protection sheet on an antenna pattern surface, wherein the base film has a printing layer made of printing ink containing a phosphorescent phosphor on the entire surface or a part thereof. In the tag.

  The third of the gist of the present invention for solving the above-mentioned problems is that an IC chip with a storage function capable of reading information in a non-contact manner and an antenna pattern for transmitting and receiving electromagnetic waves are electrically connected on the base film, In the non-contact IC tag which has a surface protection sheet on the antenna pattern surface, the phosphorescent non-contact IC tag is characterized in that a phosphorescent phosphor is kneaded in the surface protection sheet.

  The fourth of the gist of the present invention for solving the above problems is that an IC chip with a storage function capable of reading information in a non-contact manner and an antenna pattern for transmitting and receiving electromagnetic waves are electrically connected on the base film, In the non-contact IC tag which has a transparent surface protection sheet on the antenna pattern surface, the phosphorescent non-contact IC tag is characterized in that a phosphorescent phosphor is kneaded into the base film.

  The phosphorescent non-contact IC tag of the present invention has a surface protective sheet or base film provided with a light-emitting printed layer of phosphorescent phosphor, or the phosphorescent phosphor is kneaded into the surface protective sheet or base film itself. Therefore, since afterglow is emitted in a dark place, it is easy to find the location of the non-contact IC tag, and as a result, the reading operation can be performed efficiently.

The non-contact IC tag of the present invention will be described below with reference to the drawings.
1 is a plan perspective view showing a first embodiment of a luminous non-contact IC tag, FIG. 2 is a sectional view of the first embodiment, FIG. 3 is a sectional view of the second embodiment, and FIG. FIG. 5 is a cross-sectional view of the fourth embodiment, and FIG. 5 is a cross-sectional view of the fourth embodiment.

FIG. 1 is a plan perspective view showing a first embodiment of a luminous non-contact IC tag according to the present invention.
As shown in FIG. 1, the first embodiment of the luminous non-contact IC tag of the present invention forms a planar antenna pattern 2 on a base film 11, and a semiconductor integrated circuit on both ends 2 a and 2 b of the antenna pattern 2. The IC chip 3 is mounted. Since the mounting is performed by an anisotropic conductive adhesive sheet or the like, electrical connection is ensured. Since the non-contact IC tag 1 is covered with a surface protective sheet, the antenna pattern 2 or the like cannot be visually recognized normally.
In FIG. 1, the antenna pattern 2 is a wire coil shape that transmits and receives an electromagnetic wave signal having a frequency of 13.56 MHz. However, the antenna pattern 2 is not limited to the coil pattern, and is a dipole type for UHF band communication. An antenna may be used.

The IC chip 3 is an integrated circuit having a processing function, a storage function, and an input / output function, and the storage unit can store information, and the processing function unit stores information in the storage unit, or the storage unit Information can be read from Such an antenna pattern 2 is manufactured by photo-etching a metal foil laminated on the base film 11 or printing with a conductive ink.
The planar form of the above phosphorescent non-contact IC tag 1 is not different from a normal non-contact IC tag, but the phosphorescent non-contact IC tag 1 of the present invention is characterized by emitting fluorescence in a dark place.
In any form of the phosphorescent non-contact IC tag 1 described below, printing ink made of phosphorescent phosphor is printed as a luminescent printing layer, or the phosphorescent phosphor itself is the base film 11 or the surface protection. Since it is kneaded into the sheet 4, it emits light in the same manner.

  A sectional view of the first embodiment of the luminous non-contact IC tag is as shown in FIG. The upper surface of the base film 11 on which the antenna pattern 2 is formed is covered with the surface protection sheet 4 through the adhesive layer 5. This is to prevent the antenna pattern 2 and the IC chip 3 from being damaged and to enable surface display printing and the like. For the sake of illustration, the adhesive layer 5 and the base film 11 are shown as having a gap, but the adhesive layer 5 and the base film 11 or the antenna pattern 2 are actually in close contact with each other. It is.

The luminous non-contact IC tag 1 according to the first embodiment is characterized in that the luminescent printed layer 6 is printed on the entire surface or a part of the surface protective sheet 4 with printing ink containing the luminous phosphor 10.
In the case of FIG. 2, the case where the luminescent printed layer 6 is provided on the entire surface is illustrated. In some cases, the pattern occupies a considerable area is preferable. This is because the emitted light can be easily recognized. The luminescent printed layer 6 may be printed on the inner surface side of the surface protection sheet 4, that is, on the antenna pattern 2 side. On the luminescent printing layer 6, you may have the normal printing layer 9 which does not contain luminous fluorescent substance partially in pattern shape. The normal printing layer 9 may be printed first on the lower surface side of the luminescent printing layer 6. When the light emitting printing layer 6 is the outermost surface of the surface protective sheet 4, the surface protective sheet 4 may be opaque, but when printing on the inner surface side of the surface protective sheet 4, it is necessary to make it transparent.

  The luminescent printed layer 6 is a layer that makes the non-contact IC tag 1 visible in the dark due to the afterglow of the phosphorescent phosphor 10 contained therein. Therefore, when the layer thickness of the luminescent printing layer 6 is too thin, the afterglow is dark and visible information cannot be seen. A thickness of the order of 1 to 2 μm is sufficient for a normal printing layer, but the luminescent printing layer 6 is at least 5 μm, preferably about 20 μm to 200 μm, depending on the phosphorescent phosphor used and the intensity of excitation light. It is preferable to set it as the thickness. In this respect, if the luminescent printing layer 6 is formed on the entire surface of the sheet, there is an advantage that it can be easily formed thickly by printing or other coating methods. However, the luminescent printed layer 6 can be formed sufficiently thick even in the case of partial printing according to the silk screen printing method.

A cross-sectional view of the second embodiment of the luminous non-contact IC tag 1 is as shown in FIG. Although a plan perspective view is omitted, it is the same as FIG. The general configuration of the cross section is the same as that of the first embodiment, and the IC chip 3 is mounted on the antenna pattern 2. Similarly, the upper surface of the base film 11 on which the antenna pattern 2 is formed is covered with the surface protection sheet 4.
The luminous non-contact IC tag 1 of the second embodiment is characterized in that the luminescent printed layer 6 including the luminous phosphor 10 is printed on the entire surface or a part of the base film 11. Although FIG. 3 shows a part of the case, it is preferable that the pattern occupies a considerable area in some cases.
The thickness and the like of the luminescent print layer 6 are the same as those in the first embodiment. In the case of the second embodiment, the surface protective sheet 4 is preferably transparent. This is because the visual recognition of the luminescent printed layer 6 of the base film 11 is not hindered.

  Generally, when the luminescent printed layer 6 is provided closest to the observation side, the luminescence can be visually recognized strongly. Therefore, when the non-contact IC tag 1 is observed only from the surface protection sheet side, the luminous non-contact IC tag 1 of the first embodiment is preferable. However, in the second embodiment, when the adhesive layer 7 is not provided and the card-like hanging price tag is used, the non-contact IC tag 1 is often observed from the base film 11 side. In such a case, the second embodiment is advantageous. Therefore, in the second embodiment, the luminescent printed layer 6 may be provided on the side surface of the base film 11 opposite to the antenna pattern 2.

A cross-sectional view of the third embodiment of the luminous non-contact IC tag 1 is as shown in FIG. Although a plan perspective view is omitted, it is the same as FIG. The general configuration of the third embodiment is the same as that of the first embodiment, and the IC chip 3 is mounted on the antenna pattern 2. Similarly, the upper surface of the base film 11 on which the antenna pattern 2 is formed is covered with the surface protection sheet 4.
The phosphorescent non-contact IC tag 1 of the third embodiment is characterized in that the phosphorescent phosphor 10 is kneaded into the surface protective sheet 4 itself. In such a case, the trouble of printing the surface protection sheet 4 with printing ink containing a phosphorescent phosphor can be omitted.

A cross-sectional view of the fourth embodiment of the luminous non-contact IC tag 1 is as shown in FIG. Although a plan perspective view is omitted, it is the same as FIG. The general configuration of the cross section is the same as that of the first embodiment, and the IC chip 3 is mounted on the antenna pattern 2. Similarly, the upper surface of the base film 11 on which the antenna pattern 2 is formed is covered with the surface protection sheet 4.
The luminous non-contact IC tag 1 of the fourth embodiment is characterized in that the luminous phosphor 10 is kneaded into the base film 11 itself. In such a case, the trouble of printing the base film 11 with printing ink containing a phosphorescent phosphor can be omitted. Also in the case of the fourth embodiment, the surface protective sheet 4 is preferably transparent.

In any of the first embodiment to the fourth embodiment, the adhesive film 7 and the release paper 8 are illustrated on the surface of the base film 11 on the adherend side. The paper 8 may be omitted. When the pressure-sensitive adhesive layer 7 is provided, the label-like luminous non-contact IC tag 1 is obtained. When the adhesive layer 7 is not provided, the card-like luminous non-contact IC tag 1 is obtained as described above.
In many cases, the pressure-sensitive adhesive layer 7 has a pressure-sensitive adhesive layer 7 printed in advance on a release paper 8 having a release surface, and is adhered to the base film 11 of the phosphorescent non-contact IC tag 1.
In any case, the surface protective sheet 4 or the base film 11 may have a normal printing layer 9.

<About phosphorescent phosphors>
The phosphorescent phosphor is a phosphor that is particularly bright in phosphorescence (afterglow) and lasts for a long time. In general, the afterglow time of a phosphor is very short, and its light emission is quickly attenuated when external stimulation is stopped. However, after stimulating with ultraviolet light or the like, in rare cases, a considerable time (several tens of minutes to several times) In some cases, afterglow is observed with the naked eye over time), and these are called phosphorescent phosphors, phosphors, and phosphorescent pigments as distinguished from ordinary phosphors.

  As this phosphorescent phosphor, sulfide phosphors such as CaS: Bi (purple blue light emission), CaSrS: Bi (blue light emission), ZnCdS: Cu (yellow to orange light emission) have been conventionally used. Although these conventional products are pointed out that they are chemically unstable or inferior in light resistance, in the case of a disposable non-contact IC tag, these phosphors may be used. The zinc sulfide-based phosphorescent phosphor (ZnS: Cu), which has been widely used, can be used for the phosphorescent non-contact IC tag 1 of the present application if it does not contain radioactive materials and is not used directly for a long time outdoors. is there.

However, the following phosphorescent phosphors are more preferable than the conventional phosphorescent phosphors in that they exhibit extremely long afterglow time without the use of radioactive substances.
That is, it is a phosphorescent phosphor having at least one metal element selected from the group consisting of strontium, calcium, and barium as M, and a compound represented by the chemical formula MAl ₂ O ₄ as a mother crystal. And usually, the afterglow time is lengthened by adding a small amount of an activator such as europium (Eu) to this mother crystal, but if necessary, as a coactivator, manganese, bismuth, tin Alternatively, afterglow time can be further increased by containing a small amount of lanthanum, cerium, praseodymium, neodymium, samarium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, ruthenium, and the like.

As a specific phosphorescent phosphor using such a metal oxide as a mother crystal, for example, SrAl ₂ O ₄ : Eu using strontium as a metal element M and europium as an activator, or further co-attached SrAl ₂ O ₄ : Eu, Dy using dysprosium as an activator, SrAl ₂ O ₄ : Eu, Nd, SrAl ₂ O ₄ : Eu, Mn, SrAl ₂ O ₄ : Eu using neodymium as a coactivator , Sn, SrAl ₂ O ₄ : Eu, Bi and the like.
Alternatively, CaAl ₂ O ₄ : Eu, Nd, CaAl ₂ O ₄ : Eu, Sm, CaAl ₂ O ₄ : Eu, Tm, CaAl ₂ O ₄ : Eu, Nd, or co-attached using calcium as the metal element M active agent were used two _{kinds, CaAl 2 O 4: Eu,} Nd, La, CaAl 2 O 4: Eu, Nd, Gd, CaAl 2 O 4: Eu, Nd, Dy, CaAl 2 O 4: Eu, Nd, Examples thereof include Ho, CaAl ₂ O ₄ : Eu, Nd, Er, and BaAl ₂ O ₄ : Eu, Nd using barium as the metal element M. Alternatively, examples of the mother crystal include Sr _x Mg _1-x Al ₂ O ₄ using magnesium in addition to the metal element M, and Ca _1-x Sr _x Al ₂ O ₄ using a plurality of types of metal elements M.

The phosphorescent phosphor using the mother crystal represented by the above chemical formula MAl ₂ O ₄ is a metal oxide type as compared with a well-known sulfide type such as ZnS: Cu. In particular, it is stable and moisture resistant, and also has excellent light resistance and little reduction in luminance. Above all, it has afterglow characteristics that the brightness lasts for a very long time as compared with conventional sulfide-based phosphorescent phosphors, and no radioactive substance is practically required. The emission peak wavelength of the SrAl ₂ O ₄ phosphorescent phosphor emits green light of 520 nm, and develops a color similar to the conventional ZnS: Cu of 530 nm. In addition, as such a metal oxide type phosphorescent phosphor, a product name “Lumi Nova (trademark)” marketed by Nemoto Special Chemical Co., Ltd., with a particle size of 12 to 17 μm, pale yellow A green phosphor SrAl ₂ O ₄ phosphorescent phosphor can be used.

On the other hand, other forms of metal oxide phosphorescent pigments are also in practical use. This material has the general formula _{(A 1-x D x E} y) O · a (G 1-z H Z) 2 O 3, is made of. In the formula, A is at least one selected from the group consisting of Mg, Ca, Sr, Ba, Zn, D is an activator Eu, and E is a co-activator Dy or Sb of a lanthanoid element O is oxygen, G is Al of the mother crystal, and H is B or Ga of the substrate crystal. The range of x, y, z and a in the formula is composed of:
0.0001 ≦ x ≦ 0.5
0.0001 ≦ y ≦ 0.5
0.0001 ≦ z ≦ 0.5
0.5 ≦ a ≦ 3.0

  A commercial item is available as said luminous pigment as a luminous pigment (EZCG7-A) made by Easy Bright. Since this phosphorescent pigment has high water resistance and can easily reduce the pigment water absorption, it is relatively easy to melt and mix with a thermoplastic resin, and the phosphorescent pigment can be uniformly dispersed in the thermoplastic resin. In the present specification, the phosphorescent pigment and the phosphorescent phosphor may be regarded as consent.

By the way, the luminance of the visual recognition level at which humans can sufficiently feel the brightness is about 300 mCd / m ² , and after the phosphorescent phosphor is stimulated with light, the time until the luminous luminance gradually attenuates and reaches this visual recognition level. Is compared to the conventional phosphorescent phosphor such as zinc sulfide, the above-mentioned metal oxide phosphorescent phosphor such as the SrAl ₂ O ₄ system has an extremely long residual time of about 10 times. Has light time. For example, when the afterglow brightness after stimulation for 4 minutes at a brightness of 200 lx with a D65 standard light source is compared with the afterglow time up to the visual recognition level, ZnS: Cu is about 60 to 90 minutes, but SrAl ₂ O ₄ A system such as SrAl ₂ O ₄ : Eu exhibits extremely excellent performance that lasts for 10 hours or more and lasts for an extremely long time. In addition, the stronger the afterglow, the stronger the afterglow, the brighter the stimulating light compared to the conventional ZnS: Cu.

  The luminescent printed layer 6 is composed of at least a transparent resin and a phosphorescent phosphor 10 dispersed and contained in the resin. The luminescent printed layer 6 is usually a layer colored with a coloring material such as a pigment or a dye so as not to hinder the light emission of the phosphorescent phosphor. In addition, the phosphorescent phosphor 10 itself usually has a light white color, and the phosphorescent phosphor itself can be used as a coloring material in a bright place. Therefore, the luminescent printing layer 6 is composed of a single layer or a multi-colored multilayer. The multi-color includes multi-colors by the above-mentioned color material or multi-colors when the luminous color of the phosphorescent phosphor itself is counted as the number of colors.

  Note that when the powder color of the phosphorescent phosphor itself is used as it is in the light place of the light-emitting printed layer 6 without containing a colorant, the color of the base material is also light-emitting. If the color is the same as or similar to the color of the print layer, the pattern of the luminescent print layer 6 can be seen in the dark place as the hidden visible information. Furthermore, if the normal printing layer 9 is formed on the same side of the luminescent printing layer as the upper side of the luminescent printing layer by changing the position, for example, the pattern of the normal printing layer 9 is formed in a bright place. In addition, an IC tag in which two types of visible information can be seen in which a pattern of the luminescent printed layer can be seen in a dark place. In addition, even if a part of the normal printing layer 9 overlaps the light emitting printing layer 6, it is sufficient that the recognition of the pattern of the light emitting printing layer is not hindered.

And as resin material which comprises the luminescent printing layer 6, resin with good transparency is preferable, an acrylic resin, a vinyl chloride-vinyl acetate copolymer, a polyester resin, a urethane resin, an epoxy resin, an ultraviolet curable resin, an electronic A thermoplastic resin such as a linear curable resin or a thermosetting or electron beam curable resin is used. The transparency required for the luminescent printed layer 6 is at least transparent to light having a wavelength that can stimulate it in the phosphorescent phosphor 10 to be used and to light having a wavelength that emits afterglow. It is sufficient if it has properties or translucency.
In the SrAl ₂ O ₄ phosphorescent phosphor, for example, the stimulation light is light in the wavelength range of 200 to 450 nm, and the afterglow has a peak at 520 nm and is light in the wavelength range of about 430 to 640 nm. Moreover, when forming the normal printing layer 9 under the luminescent printing layer 6, the transparency which can see the lower printing layer is required.

  The content of the phosphorescent phosphor 10 in the luminescent printed layer 6 is, for example, in the range of 5 to 20% by weight per 100 parts by weight of the resin constituting the luminescent printed layer. If the amount is too small, the luminance is lowered and sufficient brightness cannot be obtained. On the other hand, if the amount is too large, the film strength decreases. Further, the thickness of the luminescent printing layer 6 is preferably at least 5 μm or more, more preferably 20 μm or more, depending on the content thereof, in order to contain a phosphorescent phosphor and satisfy a certain luminance. It is preferable that The maximum value of the thickness is not limited, but is preferably 200 μm or less at most from the viewpoint of cost. In addition, when the thickness is insufficient by one screen printing, overprinting can be performed a plurality of times.

  Next, the normal printing layer 9 is a printing layer containing no phosphorescent phosphor, and is a layer formed by a conventionally known method. Therefore, the normal printing layer 9 may be formed by printing by a conventionally known method or material such as offset printing, silk screen printing, gravure printing, letterpress printing, or transfer printing. Moreover, you may form with various printers, such as a thermal transfer printer and an inkjet printer. The normal printing layer 9 is composed of a single layer or multiple layers of multiple colors as a partial pattern. The pattern of the normal printing layer 9 may be a pattern of a thin film layer formed by transfer printing or the like. When the luminescent printed layer 6 is provided on the entire surface, the ordinary printed layer 9 becomes visible information that can be visually recognized by the luminescent printed layer 6 even in a dark place.

<About phosphorescent material kneaded substrate>
The film or sheet in which the phosphorescent phosphor 10 is kneaded is a conventionally known film or sheet manufacturing method such as a melt extrusion method or a calendering method in which the phosphorescent phosphor 10 and other additives are kneaded with a resin. Obtainable. In addition, content of the luminous phosphor 10 in resin shall be the range of 5-20 weight part with respect to 100 weight part of resin which comprises a base material, for example. If the amount is too small, the brightness is lowered and sufficient brightness cannot be obtained. If the amount is too large, it becomes difficult to form a film or sheet. The thickness of the film or sheet is about 30 μm to 1.0 mm. If it is too thin, the brightness is lowered and sufficient brightness cannot be obtained, and the phosphorescent phosphor tends to be brittle because of its high content of phosphorescent phosphor. On the other hand, even if the thickness is too large, light is blocked by the phosphor itself, so that an upper limit occurs in the increase in luminance. The cost is also high, and it is inconvenient for applications that require flexibility of the non-contact IC tag.

  The phosphorescent phosphor 10 added to the resin is commercially available from Nemoto Special Chemical Co., Ltd. as a phosphorescent pigment having an average particle size of 20 μm or 40 μm. In addition, a material such as acrylic, polystyrene, polypropylene, polycarbonate, or the like using a phosphorescent pigment as a resin pellet can also be used.

In the configuration illustrated in the cross-sectional views of FIGS. 4 and 5, the film or the sheet is expressed as a single layer, but the base material may be formed of multiple layers. For example, the form which interposes the adhesive agent layer which kneaded the luminous phosphor 10 as a center layer between transparent front and back sheets may be sufficient.
Thus, the case where the base material contains the phosphorescent phosphor 10 may be a case where the base material is composed of multiple layers. In that case, it is necessary that at least one layer contains the phosphorescent phosphor 10 and the other layer has a light-transmitting property that does not block the light emission of the phosphorescent phosphor 10.
For example, “N Nightlight (Luminova Sheet) (trademark)” manufactured by Nemoto Special Chemical Co., Ltd. has a luminova layer (light emitting layer) as an intermediate layer, sandwiched between a transparent acrylic sheet and a white vinyl chloride layer, and a white vinyl chloride layer It seems that the pressure-sensitive adhesive layer was formed on the side. A commercially available “phosphorescent sheet” manufactured by Sinroihi Co., Ltd. is also regarded as an adhesive sheet having the same structure.

<Other materials>
(1) Base film A wide variety of plastic films can be used, and the following single films or composite films thereof can be used.
Polyethylene terephthalate (PET), PET-G (terephthalic acid-cyclohexanedimethanol-ethylene glycol copolymer), polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, polycarbonate, polyamide, polyimide, cellulose diacetate, cellulose triacetate, Polystyrene, ABS, polyacrylate, polypropylene, polyethylene, polyurethane, and the like.
However, when kneading phosphorescent phosphor 10, it is necessary to consider compatibility.

(2) Surface protection sheet A wide variety of plastic films and paper substrates can be used. As the plastic film, those listed above can be used, and as the paper substrate, the following can be used. When performing printer printing on the surface, paper substrates such as fine paper and coated paper are particularly preferable.
Fine paper, coated paper, kraft paper, glassine paper, synthetic paper, latex and melamine impregnated paper. However, when kneading phosphorescent phosphor 10, it is necessary to consider compatibility.

(3) Adhesive, pressure-sensitive adhesive In the present specification, the term adhesive refers to various types such as a solvent type, a polymerization type, an ultraviolet curable type, an emulsion type, and a heat-melt type. Shall be included. In either case, the purpose can be achieved by bonding the two materials.
Further, in the present specification, the term “adhesive” refers to an adhesive that keeps an intermediate tack state indefinitely without a significant increase in viscosity.
Various resin compositions such as natural rubber, nitrile rubber, epoxy resin, vinyl acetate emulsion, acrylic, acrylate copolymer, polyvinyl alcohol, phenol resin, etc. Material can be used.

Hereinafter, actual embodiments will be described using examples.
As a base film 11, a base material obtained by dry laminating a 25 μm thick aluminum foil on a transparent biaxially stretched PET film having a thickness of 38 μm, a photosensitive resist is applied thereto, and then a photomask having an antenna pattern is exposed. Sensitized. After exposure and development, photoetching was performed to complete the base film film 11 having the antenna pattern 2 as shown in FIG. The antenna pattern 2 has an outer shape of approximately 45 mm × 76 mm. The IC chip 3 having a planar size of 1.0 mm square and a thickness of 150 μm was attached to both ends 2a and 2b of the base film 11 by applying heat pressure in a face-down state.

On the coated paper having a thickness of 40 μm, the silk screen printing ink containing the phosphorescent phosphor 10 is printed on the entire surface so that the thickness after drying becomes 40 μm to 50 μm to form the light emitting printing layer 6, and silk screen printing is applied to a part of the surface. Ordinary printing 9 was performed to obtain a surface protective sheet 4.
In addition, as the phosphorescent phosphor 10, a phosphorescent material (N nightlight (Lumi Nova (trademark)) grade F) manufactured by Nemoto Special Chemical Co., Ltd. was used. It is a pigment having an average particle size of 10 μm for screen printing.
Next, the surface protection sheet 4 was laminated with a light emitting printing layer 6 on the outermost surface through a polyester-based hot melt adhesive, and lightly hot pressed. Finally, the back surface of the base film 11 is processed with an adhesive to laminate release paper 8 through a 12 μm adhesive layer 7 and cut to a size of 54 mm x 86 mm to complete a luminous non-contact IC tag with release paper. did.

  A base film 11 was obtained by dry laminating a 25 μm thick aluminum foil on a material (manufactured by Sinloihi Co., Ltd.) provided with an adhesive layer 7 and release paper 8 on a phosphorescent sheet having a thickness of 160 μm. After applying a photosensitive resist to this, a photomask having an antenna pattern was exposed and exposed. After exposure and development, photoetching was performed to complete the base film 11 having the antenna pattern 2 as shown in FIG. The antenna pattern 2 has an outer shape of approximately 45 mm × 76 mm.

  The IC chip 3 having a planar size of 1.0 mm square and a thickness of 150 μm was attached to both ends 2a and 2b of the base film 11 by applying heat pressure in a face-down state. Next, a surface protective sheet 4 made of a transparent polyethylene terephthalate (PET) film having a thickness of 20 μm is laminated through a polyester-based hot melt adhesive, hot-pressed, cut into a size of 54 mm × 86 mm, and a phosphorescent contactless IC. Completed tag 1.

The luminous non-contact IC tag 1 of Example 1 emits blue-green for several hours even after being exposed to sunlight and left in a dark room, and the location of the non-contact IC tag 1 can be clarified. It was.
The phosphorescent non-contact IC tag 1 of Example 2 is a 30 W fluorescent lamp from the surface, and afterglow is recognized for about 15 minutes even after being stimulated for 10 minutes and left in a dark room. I was able to clarify the whereabouts.

It is a plane perspective view which shows 1st Embodiment of a luminous non-contact IC tag. It is sectional drawing of 1st Embodiment. It is sectional drawing of 2nd Embodiment. It is sectional drawing of 3rd Embodiment. It is sectional drawing of 4th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Phosphorescent contactless IC tag 2 Antenna pattern 3 IC chip 4 Surface protection sheet 5 Adhesive layer 6 Luminescent printing layer 7 Adhesive layer 8 Release paper 9 Normal printing layer 10 Luminous phosphor 11 Base film

Claims (6)

A non-contact IC tag in which an IC chip with a memory function capable of reading information in a non-contact manner and an antenna pattern for transmitting and receiving electromagnetic waves are electrically connected on a base film, and a surface protection sheet is provided on the antenna pattern surface of the base film. The surface protective sheet has a printing layer made of printing ink containing a phosphorescent phosphor on the entire surface or a part thereof. An IC chip with a memory function capable of reading information in a non-contact manner and an antenna pattern for transmitting and receiving electromagnetic waves are electrically connected on the base film, and has a transparent surface protection sheet on the antenna pattern surface of the base film. In the IC tag, the base film has a printing layer made of a printing ink containing a phosphorescent phosphor on the whole surface or a part thereof. A non-contact IC tag in which an IC chip with a memory function capable of reading information in a non-contact manner and an antenna pattern for transmitting and receiving electromagnetic waves are electrically connected on a base film, and a surface protection sheet is provided on the antenna pattern surface of the base film. A phosphorescent non-contact IC tag, wherein a phosphorescent phosphor is kneaded in the surface protective sheet. An IC chip with a memory function capable of reading information in a non-contact manner and an antenna pattern for transmitting and receiving electromagnetic waves are electrically connected on the base film, and has a transparent surface protection sheet on the antenna pattern surface of the base film. In the IC tag, a phosphorescent non-contact IC tag, wherein a phosphorescent phosphor is kneaded into the base film. The adhesive layer for sticking to a to-be-adhered body and the release paper for adhesive protection are provided in order on the opposite side to the antenna pattern of the said base film in any one of Claims 1 thru | or 4 characterized by the above-mentioned. The luminous non-contact IC tag according to claim. The luminous non-contact IC tag according to any one of claims 1 to 4, further comprising a surface protective sheet or a base film and a printing layer made of ordinary printing ink.

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