Conductive light emitting label and method of making same

Abstract

The application discloses a conductive light-emitting label and a preparation method thereof. The conductive light-emitting label comprises a substrate, a light-emitting ink layer, a dielectric ink layer, a conductive ink layer and an insulating ink layer which are sequentially stacked. The novel conductive light-emitting label has the characteristics of concealment and softness, can be hidden, is lighter and thinner, can be bent, has better foldability and controllability, and can continuously emit light for a long time.

Description

Technical Field

[0001] This invention relates to the field of luminescent tag technology, specifically to a conductive luminescent tag and its preparation method. Background Technology

[0002] Currently, to enhance product display, luminous labels are increasingly used in the packaging and display industry. The most common manufacturing processes in the luminous label industry are LED+FPC or printed fluorescent ink. LED+FPC luminous labels typically use injection-molded light-emitting panels, which are relatively complex to manufacture. Furthermore, the products are made of rigid materials, making it difficult to hide the patterns, and they are also bulky, hard, and have poor foldability. Fluorescent ink labels utilize their own weak fluorescence to achieve a luminous effect, but suffer from weak fluorescence, short luminescence time, and rapid decay, failing to provide continuous and controllable illumination. The luminous patterns cannot be hidden, making them unsuitable for various applications, especially in flexible electronic products. Summary of the Invention

[0003] The main objective of this invention is to propose a conductive luminescent tag and its preparation method, aiming to solve the problems of existing luminescent tags being too rigid and having poor foldability.

[0004] To achieve the above objectives, the present invention proposes a conductive luminescent label, which includes a substrate, a luminescent ink layer, a dielectric ink layer, a conductive ink layer and an insulating ink layer stacked sequentially.

[0005] Optionally, the dielectric ink layer comprises the following raw materials in the indicated mass fractions: 25%–40% zinc sulfide, 0.01%–0.1% of any one of Cu, Mn, and Ag, 20%–35% high-boiling-point ester-based mixed solvent, 20%–25% diethylene glycol ethyl ether, 5%–10% dimethyl adipate, 10%–20% cyclohexanone, and 0.01%–0.05% polymerization inhibitor.

[0006] Optionally, the dielectric ink layer further includes an anti-settling agent, wherein the mass fraction of the anti-settling agent is 0.01% to 0.05%.

[0007] Optionally, the polymerization inhibitor includes p-tert-butylcatechol.

[0008] Optionally, the thickness of the luminescent ink layer of the conductive luminescent label is 8–10 μm; and / or,

[0009] The thickness of the dielectric ink layer of the conductive luminescent label is 8–10 μm.

[0010] This invention also proposes a method for preparing the conductive light-emitting tag as described above, comprising the following steps:

[0011] S1. Print luminescent ink on the substrate to obtain a luminescent ink layer;

[0012] S2. Print dielectric ink on the upper surface of the luminescent ink layer, and after drying, print dielectric ink again on the upper surface to obtain a dielectric ink layer.

[0013] S3. Print conductive ink on the upper surface of the dielectric ink layer to obtain a conductive ink layer;

[0014] S4. Insulating ink is printed on the upper surface of the conductive ink layer. After drying, a conductive luminescent label is obtained.

[0015] Optionally, in step S1, the material of the substrate includes any one of transparent PET material, PC material, Mylar material, and coated paper.

[0016] Optionally, in step S1, the number of times the luminescent ink is printed is 2 to 3.

[0017] Optionally, in step S2, the drying temperature is 80–100°C.

[0018] Optionally, in step S2, the drying time is 15 to 20 minutes.

[0019] In the technical solution provided by this invention, the conductive luminescent label, by setting a conductive ink layer, an insulating ink layer, a luminescent ink layer and a dielectric ink layer on the substrate, can be adapted to screen printing on various materials such as PC, transparent materials, Mylar, and coated paper. The conductive luminescent label has good flexibility, meeting the conductive luminescence requirements of soft electronic products on the market. At the same time, the product pattern can be hidden, it is lighter, thinner, more flexible, has better foldability and controllability, and can emit light continuously for a long time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of an embodiment of the conductive light-emitting tag of the present invention.

[0022] Explanation of reference numerals in the accompanying drawings of the embodiments provided in this invention:

[0023]

[0024]

[0025] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially. Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, or solution B, or a solution where both A and B are satisfied simultaneously. In addition, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Currently, the most common manufacturing processes in the luminous label industry are LED + FPC or printing with fluorescent ink. LED + FPC luminous materials are mostly injection-molded luminous panels, which are relatively complex to manufacture. Furthermore, the products are made of rigid materials, making it difficult to hide the patterns, and they are large, hard, and have poor foldability. Fluorescent inks achieve their luminous effect by emitting weak fluorescence, but suffer from weak fluorescence, short luminescence time, and rapid decay, failing to provide continuous and controllable luminescence. The luminous patterns cannot be hidden, making them unsuitable for various applications, especially in flexible electronic products.

[0028] In view of this, the present invention proposes a conductive luminescent tag, aiming to provide a flexible, lighter, thinner, bendable, foldable, and controllable conductive luminescent tag that can emit light continuously for a long time. (Refer to...) Figure 1 , Figure 1 This is a schematic diagram of an embodiment of the conductive light-emitting tag of the present invention.

[0029] The present invention proposes a conductive luminescent label 100, which includes a substrate 1, a luminescent ink layer 2, a dielectric ink layer 3, a conductive ink layer 4, and an insulating ink layer 5 stacked sequentially.

[0030] In the technical solution provided by this invention, please refer to Figure 1The conductive luminescent label 100, by sequentially depositing a luminescent ink layer 2, a dielectric ink layer 3, a conductive ink layer 4, and an insulating ink layer 5 on a substrate, can be screen-printed on various materials such as PC, transparent materials, Mylar, and coated paper. This conductive luminescent label 100 exhibits excellent flexibility, meeting the conductive luminescence requirements of flexible electronic products on the market. Simultaneously, the product pattern can be hidden, it is lighter, thinner, more flexible, has better foldability and controllability, and can emit light continuously for extended periods. The conductive luminescent label 100 of this invention can be applied to electronic products, as well as products requiring a light source, such as automotive dashboards, warning lights, vehicle bodies, advertising materials, luminescent toys, and backlights for various electronic products.

[0031] Further, the dielectric ink layer 3 comprises the following raw materials in the indicated mass fractions: 25%–40% zinc sulfide, 0.01%–0.1% of any one of Cu, Mn, and Ag, 20%–35% high-boiling-point ester-based mixed solvent, 20%–25% diethylene glycol ethyl ether, 5%–10% dimethyl adipate, 10%–20% cyclohexanone, and 0.01%–0.05% polymerization inhibitor. The dielectric ink layer 3 provided by this invention comprises zinc sulfide, Cu, Mn, Ag, a high-boiling-point ester-based mixed solvent, diethylene glycol ethyl ether, dimethyl adipate, cyclohexanone, and a polymerization inhibitor. This is achieved by adding a small amount of [unspecified ingredient] to the zinc sulfide. Any one of Cu, Mn, and Ag can be used as an activator to make the product emit light of different colors; the high-boiling-point ester-based mixed solvent can dissolve other organic components and has good leveling properties, which can improve gloss, improve ink hiding power, and increase ink flexibility and adhesion; the polymerization inhibitor can prevent other components in the raw materials from undergoing polymerization reactions, thus affecting the printing effect of the ink. Finally, through the optimization of each component and its ratio, when the composition is applied to the conductive light-emitting label 100, it can improve the light-emitting effect of the conductive light-emitting label 100 and expand the application scenarios of the conductive light-emitting label 100.

[0032] To improve the uniformity of the dielectric ink, the dielectric ink layer 3 further includes an anti-settling agent with a mass fraction of 0.01% to 0.05%. In this embodiment, by adding an anti-settling agent to the dielectric ink, the uniformity of the dielectric ink surface is improved, the smoothness of the surface printing is enhanced, and the uniformity of the dielectric ink is optimized through the above ratio.

[0033] Furthermore, the polymerization inhibitor includes p-tert-butylcatechol. In this embodiment, p-tert-butylcatechol is a highly efficient polymerization inhibitor that can effectively prevent other components from undergoing polymerization reactions.

[0034] In this embodiment, the thickness of the luminescent ink layer 2 of the conductive luminescent label 100 is 8-10 μm; the thickness of the dielectric ink layer 3 of the conductive luminescent label 100 is 8-10 μm. By increasing the thickness of the luminescent layer and the dielectric layer, the present invention makes the thickness of both the luminescent ink layer 2 and the dielectric ink layer 3 reach 8-10 μm, which can isolate the upper and lower electric fields to prevent short circuits, make the light emission in the voltage-driven electric field more uniform, increase the electron transmittance, and enhance the light emission intensity.

[0035] Furthermore, the present invention also proposes a method for preparing a conductive luminescent tag 100, comprising the following steps:

[0036] S1. Print luminescent ink on substrate 1 to obtain luminescent ink layer 2;

[0037] S2. Print dielectric ink on the upper surface of the luminescent ink layer 2, and after drying, print dielectric ink again on its upper surface to obtain dielectric ink layer 3.

[0038] S3. Print conductive ink on the upper surface of the dielectric ink layer 3 to obtain the conductive ink layer 4.

[0039] S4. Insulating ink is printed on the upper surface of the conductive ink layer 4. After drying, a conductive luminescent label 100 is obtained.

[0040] In the technical solution of this invention, by printing the existing single-layer luminescent ink and dielectric ink multiple times to increase the thickness of the luminescent layer and dielectric layer, the upper and lower electric fields can be isolated to prevent short circuits, increase electron transmittance, and enhance luminescence intensity. Then, conductive ink and insulating ink are printed. After printing is completed, 110V AC power is used to turn it on to make it emit light. The luminescent label prepared by this invention can emit light continuously.

[0041] Furthermore, in step S1, the material of the substrate includes any one of transparent PET material, PC material, Mylar material, and coated paper. These materials have good physical and mechanical properties and can be used to make the luminescent conductive label of the present invention, which can be applied to products with folding requirements, such as soft electronic products.

[0042] In step S1 of this embodiment, the number of times the luminescent ink is printed is 2 to 3. In order to thicken the luminescent ink layer 2 and meet the thickness requirements of the present invention, the luminescent ink is printed 2 to 3 times in this step, preferably 2 times. By printing the luminescent ink layer 2, the ink can emit light evenly, while isolating the upper and lower electric fields to prevent short circuits, increasing electron transmittance, and enhancing luminescence intensity.

[0043] Furthermore, in step S2, the drying temperature is 80-100℃. Dielectric ink is printed on the luminescent ink layer 2 using a 200-250 mesh screen. Then, the printed semi-finished product is dried at 80-100℃. That is, the drying temperature can be 80℃, 85℃, 90℃, 95℃ or 100℃. Within this temperature range, the dielectric ink can be dried well, which is convenient for subsequent operations.

[0044] To ensure that the dielectric ink layer 3 is fully dried, the drying time in step S2 is 15 to 20 minutes. Within this drying time range, the dielectric ink has good adhesion.

[0045] The technical solution of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that the following embodiments are only used to explain the present invention and are not intended to limit the present invention.

[0046] Example 1

[0047] A conductive luminescent label includes a substrate, a luminescent ink layer, a dielectric ink layer, a conductive ink layer, and an insulating ink layer stacked sequentially.

[0048] Example 2

[0049] A conductive luminescent label includes a substrate, a luminescent ink layer, a dielectric ink layer, a conductive ink layer, and an insulating ink layer stacked sequentially. The dielectric ink layer comprises the following raw materials in the indicated mass fractions: 25% zinc sulfide, 0.01% Cu, 35% high-boiling-point ester-based mixed solvent, 24.97% diethylene glycol ethyl ether, 5% dimethyl adipate, 10% cyclohexanone, 0.01% polymerization inhibitor, and 0.01% anti-settling agent. The thickness of the luminescent ink layer and the dielectric ink layer is 8µm.

[0050] Example 3

[0051] A conductive luminescent label includes a substrate, a luminescent ink layer, a dielectric ink layer, a conductive ink layer, and an insulating ink layer stacked sequentially. The dielectric ink layer comprises the following raw materials in the indicated mass fractions: 30% zinc sulfide, 0.05% Mn, 25% high-boiling-point ester-based mixed solvent, 20% diethylene glycol ethyl ether, 9.88% dimethyl adipate, 15% cyclohexanone, 0.05% polymerization inhibitor, and 0.02% anti-settling agent. The thickness of the luminescent ink layer and the dielectric ink layer is 9µm.

[0052] Example 4

[0053] A conductive luminescent label includes a substrate, a luminescent ink layer, a dielectric ink layer, a conductive ink layer, and an insulating ink layer stacked sequentially. The dielectric ink layer comprises the following raw materials in the indicated mass fractions: 40% zinc sulfide, 0.1% Ag, 20% high-boiling-point ester-based mixed solvent, 20% diethylene glycol ethyl ether, 5.83% dimethyl adipate, 14% cyclohexanone, 0.02% polymerization inhibitor, and 0.05% anti-settling agent. The thickness of the luminescent ink layer and the dielectric ink layer is 10 μm.

[0054] Example 5

[0055] A conductive luminescent label includes a substrate, a luminescent ink layer, a dielectric ink layer, a conductive ink layer, and an insulating ink layer stacked sequentially. The dielectric ink layer comprises the following raw materials in the indicated mass fractions: 25% zinc sulfide, 0.05% Cu, 20% high-boiling-point ester-based mixed solvent, 25% diethylene glycol ethyl ether, 9.88% dimethyl adipate, 20% cyclohexanone, 0.05% polymerization inhibitor, and 0.02% anti-settling agent. The thickness of the luminescent ink layer and the dielectric ink layer is 10 μm.

[0056] Example 6

[0057] A conductive luminescent label includes a substrate, a luminescent ink layer, a dielectric ink layer, a conductive ink layer, and an insulating ink layer stacked sequentially. The dielectric ink layer comprises the following raw materials in the indicated mass fractions: 25% zinc sulfide, 0.05% Ag, 20% high-boiling-point ester-based mixed solvent, 24.88% diethylene glycol ethyl ether, 10% dimethyl adipate, 20% cyclohexanone, 0.05% polymerization inhibitor, and 0.02% anti-settling agent. The thickness of the luminescent ink layer and the dielectric ink layer is 10 μm.

[0058] Example 7

[0059] A conductive luminescent label includes a substrate, a luminescent ink layer, a dielectric ink layer, a conductive ink layer, and an insulating ink layer stacked sequentially. The dielectric ink layer comprises the following raw materials in the indicated mass fractions: 25% zinc sulfide, 0.01% Cu, 35% high-boiling-point ester-based mixed solvent, 24.97% diethylene glycol ethyl ether, 5% dimethyl adipate, 10% cyclohexanone, and 0.02% polymerization inhibitor. The thickness of the luminescent ink layer and the dielectric ink layer is 8 μm.

[0060] Example 8

[0061] A conductive luminescent label includes a substrate, a luminescent ink layer, a dielectric ink layer, a conductive ink layer, and an insulating ink layer stacked sequentially. The dielectric ink layer comprises the following raw materials in the indicated mass fractions: 30% zinc sulfide, 0.05% Mn, 25% high-boiling-point ester-based mixed solvent, 20% diethylene glycol ethyl ether, 9.88% dimethyl adipate, 15% cyclohexanone, and 0.03% polymerization inhibitor. The thickness of the luminescent ink layer and the dielectric ink layer is 9µm.

[0062] Example 9

[0063] A conductive luminescent label includes a substrate, a luminescent ink layer, a dielectric ink layer, a conductive ink layer, and an insulating ink layer stacked sequentially. The dielectric ink layer comprises the following raw materials in the indicated mass fractions: 30% zinc sulfide, 0.05% Mn, 25% high-boiling-point ester-based mixed solvent, 20% diethylene glycol ethyl ether, 9.88% dimethyl adipate, 15% cyclohexanone, and 0.03% polymerization inhibitor. The thickness of the luminescent ink layer is 9 μm, and the thickness of the dielectric ink layer is 10 μm.

[0064] Example 10

[0065] The preparation of conductive luminescent tags includes the following steps:

[0066] (1) Print luminescent ink twice on PET material to obtain a luminescent ink layer;

[0067] (2) Print the dielectric ink of Example 2 on the upper surface of the luminescent ink layer, dry it at 80°C for 15 minutes, and print the above dielectric ink again on its upper surface to obtain a dielectric ink layer.

[0068] (3) Print conductive ink on the upper surface of the dielectric ink layer to obtain a conductive ink layer;

[0069] (4) Insulating ink is printed on the upper surface of the conductive ink layer and dried to obtain a conductive luminescent label.

[0070] Example 11

[0071] The preparation of conductive luminescent tags includes the following steps:

[0072] (1) Print luminescent ink twice on PC material to obtain a luminescent ink layer;

[0073] (2) Print the dielectric ink of Example 3 on the upper surface of the luminescent ink layer, dry it at 90°C for 18 minutes, and print the above dielectric ink again on its upper surface to obtain a dielectric ink layer.

[0074] (3) Print conductive ink on the upper surface of the dielectric ink layer to obtain a conductive ink layer;

[0075] (4) Insulating ink is printed on the upper surface of the conductive ink layer and dried to obtain a conductive luminescent label.

[0076] Example 12

[0077] The preparation of conductive luminescent tags includes the following steps:

[0078] (1) Print luminescent ink three times on Mylar material to obtain a luminescent ink layer;

[0079] (2) Print the dielectric ink of Example 4 on the upper surface of the luminescent ink layer, dry it at 100°C for 20 min, and print the above dielectric ink again on its upper surface to obtain a dielectric ink layer.

[0080] (3) Print conductive ink on the upper surface of the dielectric ink layer to obtain a conductive ink layer;

[0081] (4) Insulating ink is printed on the upper surface of the conductive ink layer and dried to obtain a conductive luminescent label.

[0082] Example 13

[0083] The preparation of conductive luminescent tags includes the following steps:

[0084] (1) Print luminescent ink three times on Mylar material to obtain a luminescent ink layer;

[0085] (2) Print the dielectric ink of Example 5 on the upper surface of the luminescent ink layer, dry it at 100°C for 20 min, and print the above dielectric ink again on its upper surface to obtain a dielectric ink layer.

[0086] (3) Print conductive ink on the upper surface of the dielectric ink layer to obtain a conductive ink layer;

[0087] (4) Insulating ink is printed on the upper surface of the conductive ink layer and dried to obtain a conductive luminescent label.

[0088] Example 14

[0089] The preparation of conductive luminescent tags includes the following steps:

[0090] (1) Print luminescent ink three times on Mylar material to obtain a luminescent ink layer;

[0091] (2) Print the dielectric ink of Example 6 on the upper surface of the luminescent ink layer, dry it at 100°C for 20 min, and print the above dielectric ink again on its upper surface to obtain a dielectric ink layer.

[0092] (3) Print conductive ink on the upper surface of the dielectric ink layer to obtain a conductive ink layer;

[0093] (4) Insulating ink is printed on the upper surface of the conductive ink layer and dried to obtain a conductive luminescent label.

[0094] Example 15

[0095] The preparation of conductive luminescent tags includes the following steps:

[0096] (1) Print luminescent ink three times on Mylar material to obtain a luminescent ink layer;

[0097] (2) Print the dielectric ink of Example 7 on the upper surface of the luminescent ink layer, dry it at 100°C for 20 min, and print the above dielectric ink again on its upper surface to obtain a dielectric ink layer.

[0098] (3) Print conductive ink on the upper surface of the dielectric ink layer to obtain a conductive ink layer;

[0099] (4) Insulating ink is printed on the upper surface of the conductive ink layer and dried to obtain a conductive luminescent label.

[0100] Example 16

[0101] The preparation of conductive luminescent tags includes the following steps:

[0102] (1) Print luminescent ink three times on Mylar material to obtain a luminescent ink layer;

[0103] (2) Print the dielectric ink of Example 8 on the upper surface of the luminescent ink layer, dry it at 100°C for 20 min, and print the above dielectric ink again on its upper surface to obtain a dielectric ink layer.

[0104] (3) Print conductive ink on the upper surface of the dielectric ink layer to obtain a conductive ink layer;

[0105] (4) Insulating ink is printed on the upper surface of the conductive ink layer and dried to obtain a conductive luminescent label.

[0106] Example 17

[0107] The preparation of conductive luminescent tags includes the following steps:

[0108] (1) Print luminescent ink three times on Mylar material to obtain a luminescent ink layer;

[0109] (2) Print the dielectric ink of Example 9 on the upper surface of the luminescent ink layer, dry it at 100°C for 20 min, and print the above dielectric ink again on its upper surface to obtain a dielectric ink layer.

[0110] (3) Print conductive ink on the upper surface of the dielectric ink layer to obtain a conductive ink layer;

[0111] (4) Insulating ink is printed on the upper surface of the conductive ink layer and dried to obtain a conductive luminescent label.

[0112] Comparative Example 1

[0113] Labels made with fluorescent ink.

[0114] Comparative Example 2

[0115] LED labels.

[0116] Comparative Example 3

[0117] The preparation of conductive luminescent tags includes the following steps:

[0118] (1) Print luminescent ink once on PET material to obtain a luminescent ink layer;

[0119] (2) Print the dielectric ink of Example 2 on the luminescent ink layer, and dry it at 80°C for 15 minutes to obtain a semi-finished product;

[0120] (3) Conductive ink and insulating ink are printed sequentially on the semi-finished product to obtain a conductive luminescent label.

[0121] The luminous effects of the luminous tags in Examples 10-17 and Comparative Examples 1-3 were tested, and the results are shown in Table 1.

[0122] Group Ink uniformity luminescence persistence Example 10 uniform Continuous luminescence Example 11 uniform Continuous luminescence Example 12 uniform Continuous luminescence Example 13 uniform Continuous luminescence Example 14 uniform Continuous luminescence Example 15 Uneven Continuous luminescence Example 16 Uneven Continuous luminescence Example 17 Uneven Continuous luminescence Comparative Example 1 Uneven Cannot emit light continuously Comparative Example 2 none Cannot emit light continuously Comparative Example 3 uniform Cannot emit light continuously

[0123] Compared to the fluorescent ink labels and LED labels in Comparative Examples 1 and 2, which cannot emit light continuously and can only emit light for a period of time under specific conditions, the conductive light-emitting labels in Examples 10-17 can emit light continuously and are not affected by the material environment. The conductive light-emitting labels in Examples 15-17 do not contain anti-settling agents, and the ink layer printing is uneven. Compared to the conductive light-emitting labels in Comparative Example 3, which are printed with light-emitting ink and dielectric ink only once, the conductive light-emitting labels in Examples 10-17 are printed 2 or 3 times to achieve a thickness of 8-10 μm, allowing them to emit light continuously without short circuits.

[0124] In summary, the conductive luminescent label prepared by this invention will not short-circuit after being energized and can emit light continuously. The dielectric ink used has good dispersibility and smooth printing, further enhancing the luminescent effect.

[0125] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the patent protection scope of the present invention.

Claims

1. A conductive luminescent label, characterized in that, The conductive luminescent label comprises a substrate, a luminescent ink layer, a dielectric ink layer, a conductive ink layer, and an insulating ink layer stacked sequentially. The dielectric ink layer comprises the following raw materials in the following mass fractions: 25%–40% zinc sulfide, 0.01%–0.1% of any one of Cu, Mn, and Ag, 20%–35% high-boiling-point ester-based mixed solvent, 20%–25% diethylene glycol ethyl ether, 5%–10% dimethyl adipate, 10%–20% cyclohexanone, and 0.01%–0.05% polymerization inhibitor; the dielectric ink layer also comprises an anti-settling agent, wherein the anti-settling agent has a mass fraction of 0.01%–0.05%. The thickness of the luminescent ink layer of the conductive luminescent label is 8-10 μm; and / or, the thickness of the dielectric ink layer of the conductive luminescent label is 8-10 μm.

2. The conductive light-emitting tag as described in claim 1, characterized in that, The polymerization inhibitor includes p-tert-butylcatechol.

3. A method for preparing a conductive luminescent tag as described in any one of claims 1 to 2, characterized in that, Includes the following steps: S1. Print luminescent ink on the substrate to obtain a luminescent ink layer; S2. Print dielectric ink on the upper surface of the luminescent ink layer, and after drying, print dielectric ink again on the upper surface to obtain a dielectric ink layer. S3. Print conductive ink on the upper surface of the dielectric ink layer to obtain a conductive ink layer; S4. Insulating ink is printed on the upper surface of the conductive ink layer. After drying, a conductive luminescent label is obtained.

4. The method for preparing the conductive light-emitting tag as described in claim 3, characterized in that, In step S1, the material of the substrate includes any one of transparent PET material, PC material, Mylar material, and coated paper.

5. The method for preparing a conductive light-emitting tag as described in claim 3, characterized in that, In step S1, the luminescent ink is printed 2 to 3 times.

6. The method for preparing a conductive light-emitting tag as described in claim 3, characterized in that, In step S2, the drying temperature is 80-100°C.

7. The method for preparing a conductive light-emitting tag as described in claim 3, characterized in that, In step S2, the drying time is 15 to 20 minutes.

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