CN114241948A - Electroluminescent signboard and preparation method thereof - Google Patents
Electroluminescent signboard and preparation method thereof Download PDFInfo
- Publication number
- CN114241948A CN114241948A CN202111562990.4A CN202111562990A CN114241948A CN 114241948 A CN114241948 A CN 114241948A CN 202111562990 A CN202111562990 A CN 202111562990A CN 114241948 A CN114241948 A CN 114241948A
- Authority
- CN
- China
- Prior art keywords
- electroluminescent
- layer
- signboard
- glass beads
- back electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000011521 glass Substances 0.000 claims abstract description 54
- 239000011324 bead Substances 0.000 claims abstract description 53
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 239000010410 layer Substances 0.000 claims description 111
- 238000001035 drying Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 239000011241 protective layer Substances 0.000 claims description 12
- 239000010954 inorganic particle Substances 0.000 claims description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 229920005749 polyurethane resin Polymers 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 4
- 229910002113 barium titanate Inorganic materials 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000004020 luminiscence type Methods 0.000 abstract description 13
- 239000000203 mixture Substances 0.000 abstract description 11
- 230000000052 comparative effect Effects 0.000 description 27
- 230000000694 effects Effects 0.000 description 26
- 230000009286 beneficial effect Effects 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 5
- 238000005401 electroluminescence Methods 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000002042 Silver nanowire Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/16—Signs formed of or incorporating reflecting elements or surfaces, e.g. warning signs having triangular or other geometrical shape
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/12—Reflex reflectors
- G02B5/126—Reflex reflectors including curved refracting surface
- G02B5/128—Reflex reflectors including curved refracting surface transparent spheres being embedded in matrix
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
- G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Geometry (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention relates to the technical field of reflective signs, in particular to an electroluminescent signboard and a preparation method thereof. The electroluminescent signboard comprises a substrate and a transparent conductive film, wherein a transparent microprism reflective film is arranged on one side of the transparent conductive film, and a luminescent layer is arranged on the other side of the transparent conductive film; a dielectric layer and a back electrode layer are sequentially arranged on the luminous layer, and the back electrode layer is positioned on the substrate; the composition of the light-emitting layer includes glass beads. The electroluminescent signboard has the advantages that the luminescent layer, the dielectric layer and the back electrode layer can perform self luminescence, the transparent microprism reflecting film can perform reflection, the electroluminescent signboard can perform luminescence and marking under the condition of no external light source due to the combination of the luminescent layer, the dielectric layer and the back electrode layer, and the electroluminescent signboard can more easily reflect the light source to perform luminescence and marking under the condition of the external light source.
Description
Technical Field
The invention relates to the technical field of reflective signs, in particular to an electroluminescent signboard and a preparation method thereof.
Background
Most of the existing signboard adopts a structure of a reflective film to enable the signboard to have a reflective effect, namely, the reflective film is attached to a pattern, and the pattern does not emit light. At night, such a signboard needs to display a pattern by reflecting external light such as a car, a street lamp, or the like as a light source.
However, under the condition of no external light source, the contents and patterns of the indicating boards cannot be recognized, so that the indicating boards lose the identification function and cannot play a warning function, and potential safety hazards exist.
Electroluminescence (EL) is a self-luminous mode. Electroluminescence is a physical phenomenon in which an electric field is generated by a voltage applied to two electrodes, electrons excited by the electric field collide with a luminescence center, and transition, change, and recombination of the electrons between energy levels are induced to cause luminescence. The film made of electroluminescent material has been widely used in the fields of advertisement and art, and has the characteristic of self-luminescence, thus having certain application prospect in the field of identification.
However, if the signboard is made of the electroluminescent material alone, since the electroluminescent material itself has low luminance, it is difficult to identify the pattern beyond a certain distance, resulting in poor display effect. If the brightness is increased by means of electrical current, the use of electroluminescent materials is of no significance.
Especially, for the signboard on both sides of the highway, the visible distance of the signboard and the recognition effect of the pattern are highly required. The traffic sign which is invisible or difficult to identify at a long distance is easy to cause various traffic accidents.
Disclosure of Invention
The invention aims to solve the technical problem of providing an electroluminescent signboard and a preparation method thereof.
The technical scheme for solving the technical problems is as follows:
the invention provides an electroluminescent signboard, which comprises a substrate, wherein an electroluminescent film is fixed on one side of the substrate; the electroluminescent film comprises a transparent conductive film, a transparent microprism reflecting film is arranged on one side of the transparent conductive film, and a light-emitting layer is arranged on the other side of the transparent conductive film; a dielectric layer and the back electrode layer are sequentially arranged on the light-emitting layer, and the back electrode layer is positioned on the substrate; the component of the luminescent layer comprises glass beads.
The technical scheme of the invention has the beneficial effects that: the electroluminescent signboard has the advantages that the luminescent layer, the dielectric layer and the back electrode layer can perform self luminescence, the transparent microprism reflecting film can perform reflection, the electroluminescent signboard can perform luminescence and marking under the condition of no external light source due to the combination of the luminescent layer, the dielectric layer and the back electrode layer, and the electroluminescent signboard can more easily reflect the light source to perform luminescence and marking under the condition of the external light source.
The invention can be realized by the following further technical scheme:
further, the light-emitting layer comprises the following components in percentage by mass: 43-56% of ZnS-Cu luminescent material, 40-52% of resin, 2-3% of glass beads and 2-3% of curing agent.
The beneficial effect of adopting the further technical scheme is that: the luminescent layer containing the components has good luminescent brightness, and meanwhile, the content of the glass beads can effectively improve the visible distance and also has good identification effect.
Further, the resin is at least one of a polyurethane resin and an epoxy resin.
The beneficial effect of adopting the further technical scheme is that: polyurethane resins and epoxy resins have good stability and have the advantages of being readily available and low in cost.
Further, the glass beads comprise one or two of 1000-mesh glass beads, 1300-mesh glass beads and 1500-mesh glass beads.
The beneficial effect of adopting the further technical scheme is that: by adopting 1000-mesh glass beads, 1300-mesh glass beads and 1500-mesh glass beads, the problem that the reflection capacity is reduced due to the undersize of the particle size of the glass beads and the problem that the distribution is difficult to be uniform due to the oversized particle size of the glass beads can be solved.
Further, the light-emitting layer comprises the following components in percentage by mass: 52% of ZnS-Cu luminescent material, 3% of polyurethane resin, 40% of epoxy resin, 1% of 1300-mesh glass beads, 2% of 1500-mesh glass beads and 2% of curing agent.
The beneficial effect of adopting the further technical scheme is that: the luminescent layer of the above composition has good luminescent and reflecting effects.
Further, the thickness of the light emitting layer is 20-50 μm.
The beneficial effect of adopting the further technical scheme is that: the luminescent layer with the thickness can ensure that the luminescent layer can have both self-luminous and reflective functions; the signboard has enough self-luminous brightness to ensure that the signboard can be completely identified; meanwhile, the preparation is easy, and the cost is reduced.
Further, the dielectric layer comprises the following components in percentage by mass: 48-49% of inorganic particle medium, 48% of resin and 3-4% of curing agent; and the sum of the mass percentages of the inorganic particles, the resin and the curing agent is 100%; the inorganic particles are at least two of barium titanate, barium sulfate and titanium dioxide.
Further, the sheet resistance of the transparent conductive film is 20-150 omega/□.
The beneficial effect of adopting the further technical scheme is that: within the range of sheet resistance, the transparent conductive film has good conductive effect.
Furthermore, transparent protective layers are respectively arranged on the transparent microprism reflective film and between the back electrode layer and the substrate.
The beneficial effect of adopting the further technical scheme is that: by arranging the transparent protective layer, the problem of reduced reflecting capacity caused by abrasion of the reflecting film of the transparent microprism can be prevented; the transparent protective layer is arranged between the back electrode layer and the base material, so that the protective effect can be further enhanced.
The invention also provides a preparation method of the electroluminescent signboard, which comprises the following steps:
attaching the transparent micro-prism layer to one side of the transparent conductive film; obtaining the electroluminescent film;
respectively preparing ink solutions of the light-emitting layer and the dielectric layer, and preparing conductive slurry of the back electrode layer;
printing the ink solution of the light-emitting layer on the other side of the transparent conductive film, and drying;
printing the ink solution of the dielectric layer on the dried luminescent layer, and drying;
printing the conductive slurry of the back electrode layer on the dried dielectric layer, and drying;
and fixing the back electrode layer of the electroluminescent film on one side of the substrate.
The preparation method has the advantages of simple steps, high preparation efficiency and good effect.
Drawings
Fig. 1 is a schematic structural view of an electroluminescent signboard of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a transparent protective layer; 2. a transparent microprism reflective film; 3. a transparent conductive film; 4. a light emitting layer; 5. a dielectric layer; 6. a back electrode layer; 7. a substrate.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the electroluminescent signboard of the present invention includes a substrate 7, an electroluminescent film is fixed on one side of the substrate 7; the electroluminescent film comprises a transparent conductive film 3, one side of the transparent conductive film 3 is provided with a transparent microprism reflective film 2, and the other side is provided with a luminescent layer 4; a dielectric layer 5 and a back electrode layer 6 are sequentially arranged on the light-emitting layer 4, and the back electrode layer 6 is positioned on the substrate 7; the composition of the light-emitting layer 4 includes glass beads.
The electroluminescent signboard of the invention has the advantages that the luminescent layer 4, the dielectric layer 5 and the back electrode layer 6 can carry out self luminescence, the transparent microprism reflective film 2 can carry out reflection, the combination of the two can ensure that the electroluminescent signboard can also carry out luminescence and marking under the condition of no external light source, and the electroluminescent signboard can more easily reflect the light source to carry out luminescence and marking under the condition of the external light source.
The glass micro-beads are good reflecting materials, are widely applied to the fields of road markings, reflective clothes and the like, have good reflecting effect, the micro-prism type reflecting film is a reflecting material prepared on the basis of the refraction and total reflection principles of the cubic pyramids, the surface smoothness of each cubic pyramid exceeds 5nm (nanometer), the angle error is less than 0.01 arc second, 10000 micro-prisms are distributed in each square centimeter, and the micro-prism type reflecting film is a reflecting product completely realized by ultra-precise craftsman technology and process. The invention introduces the glass beads into the electroluminescent film, combines with the microprism, has longer visible distance and better recognition effect, can effectively solve the problems of non-luminescence at night, low electroluminescent brightness, short reflective distance and the like of the common signboard, and obtains excellent indication effect.
The electroluminescent signboard has a long visible distance and an identification effect, and has important significance in practical use. Especially for traffic signs on highways, the service objects are often drivers of the vehicles. In the driving process, the early and fast identification of the content on the signboard can greatly avoid the problems of driving errors and the like, and can effectively avoid various traffic accidents.
The components of the luminous layer 4 and the mass percentages of the components are 43-56% of ZnS-Cu luminous material, 40-52% of resin, 2-3% of glass beads and 2-3% of curing agent; the sum of the mass percentages of the luminescent material, the resin, the glass beads and the curing agent is 100 percent; the luminescent layer 4 containing the components has good luminescent brightness, and meanwhile, the content of the glass beads can effectively improve the visible distance and has good identification effect.
In the above embodiment, preferably, the resin is at least one of a polyurethane resin and an epoxy resin.
In the above embodiment, preferably, the glass beads include one or two of 1000 mesh glass beads, 1300 mesh glass beads and 1500 mesh glass beads; by adopting 1000-mesh glass beads, 1300-mesh glass beads and 1500-mesh glass beads, the problem that the reflection capacity is reduced due to the undersize of the particle size of the glass beads and the problem that the distribution is difficult to be uniform due to the oversized particle size of the glass beads can be solved.
In the above embodiment, it is preferable that the composition of the light emitting layer 4 includes 52% of ZnS — Cu luminescent material, 3% of urethane resin, 40% of epoxy resin, 1% of 1300 mesh glass beads, 2% of 1500 mesh glass beads, and 2% of curing agent.
In the above embodiment, the thickness of the light emitting layer 4 is preferably 20 to 50 μm; the luminescent layer 4 with the thickness can ensure that the luminescent layer has both self-luminescence and reflection; when the thickness of the light-emitting layer 4 is too small, the self-luminous brightness of the light-emitting layer is too low, so that the signboard is difficult to identify easily; when the thickness of the luminescent layer 4 is too large, the glass beads contained therein are too much, which not only increases the complexity of the preparation, but also causes the overall thickness of the signboard to be too thick, thereby causing unnecessary waste.
In the above embodiment, preferably, the components of the dielectric layer 5 and the mass percentages of the components are 48-49% of inorganic particles, 48% of resin and 3-4% of curing agent; and the sum of the mass percentages of the inorganic particles, the resin and the curing agent is 100 percent; the inorganic particles are at least two of barium titanate, barium sulfate and titanium dioxide
In the above embodiment, it is preferable that the sheet resistance of the transparent conductive film 3 is 20 to 150 Ω/□; within this range of sheet resistance, the transparent conductive film 3 has a good conductive effect.
In the above embodiment, preferably, the transparent protective layer 1 is respectively disposed on the transparent microprism reflective film 2, between the back electrode layer 6 and the substrate 7; the transparent protective layer 1 is arranged on the transparent microprism reflective film 2, so that the problem of reduced reflective capacity caused by abrasion of the transparent microprism reflective film 2 can be prevented; the protective effect can be further enhanced by providing a transparent protective layer 1 between the back electrode layer 6 and the substrate 7.
In the above embodiment, preferably, the thickness of the dielectric layer 5 is 20 to 50 μm, the thickness of the back electrode layer 6 is 5 to 15 μm, the thickness of the transparent protective layer 1 is 3 to 5mm, and the thickness of the substrate 7 is 3 to 5 mm; the thickness range of each layer can ensure that the whole electroluminescent signboard has thinner thickness under the condition of ensuring the normal implementation of the functions of each layer, so that the electroluminescent signboard is convenient to transport and install.
In the above embodiment, preferably, the material of the back electrode layer 6 is conductive silver paste; the transparent protective layer 1 is made of one of PC and acrylic plate.
In the above embodiment, the base material 7 is preferably transparent and made of PC or acrylic.
In the above embodiment, the substrate 7 may be preferably opaque and may be made of aluminum alloy, stainless steel, or plastic plate.
In the above embodiment, preferably, the transparent conductive film 3 is one of a silver nanowire transparent conductive film, a metal mesh transparent conductive film, and a polymer conductive material transparent conductive film.
The preparation method of the electroluminescent signboard is characterized by comprising the following steps of:
attaching a transparent micro prism layer 2 to one side of a transparent conductive film 3; an electroluminescent film is obtained.
Wherein, the printing mode is to use a 250-mesh screen plate for printing; the drying mode is that the mixture is placed into an oven for drying, the drying temperature is 88-132 ℃, and the preferred temperature is 110 ℃; the drying time is 8-12 min, preferably 10 min.
Preferably, a transparent protective layer 1 is affixed to the transparent microprism layer 2.
And respectively preparing ink solutions of the light-emitting layer 4 and the dielectric layer 5, and preparing conductive slurry of the back electrode layer 6.
Wherein, the printing mode is to use a 250-mesh screen plate for printing; the drying mode is that the mixture is placed into an oven for drying, the drying temperature is 88-132 ℃, and the preferred temperature is 110 ℃; the drying time is 8-12 min, preferably 10 min.
Printing the ink solution of the luminous layer 4 on the other side of the transparent conductive film 3, and drying;
printing the ink solution of the dielectric layer 5 on the dried luminous layer 4, and drying;
and printing the conductive slurry of the back electrode layer 6 on the dried dielectric layer 5, and drying.
Wherein, the printing mode is to use a 250-mesh screen plate for printing.
The drying mode is that the mixture is placed into an oven for drying, the drying temperature is 88-132 ℃, and the preferred temperature is 110 ℃; the drying time is 8-12 min, preferably 10 min.
When the transparent protective layer 1 is not arranged between the back electrode layer 6 and the substrate 7, the back electrode layer 6 of the electroluminescent film is fixed on one side of the substrate 7; when the transparent protection layer 1 is arranged between the transparent protection layers 1, the transparent protection layer 1 is fixed on the back electrode 6, and then the transparent protection layer 1 is fixed on one side of the substrate 7.
The preparation method has the advantages of simple steps, high preparation efficiency and good effect.
The effects and effects of the present invention are illustrated and verified by the following examples:
the invention provides 15 examples, and the components, the mass percentages and the thicknesses of the light-emitting layer 4 and the dielectric layer 5 in each example are shown in tables 1 and 2:
TABLE 1 compositions and mass percentages and thicknesses of the luminescent layers 4 of examples 1 to 15
TABLE 2 compositions and mass percentages and thicknesses of dielectric layers 5 of examples 1-15
| Examples | 1-5 | 6-10 | 11-15 |
| Barium titanate (mass%) | 20 | 40 | 28 |
| Barium sulfate (mass%) | 20 | 0 | 10 |
| Titanium dioxide (mass%) | 9 | 9 | 10 |
| Polyurethane (mass%) | 48 | 0 | 24 |
| Epoxy resin (mass%) | 0 | 48 | 24 |
| Curing agent (mass%) | 3 | 4 | 4 |
| Thickness (μm) | 35 | 20 | 50 |
The effect of the electroluminescent sign according to the invention is verified by comparison in a number of comparative tests as follows:
This comparative experiment 1 was conducted by using the electroluminescent signboard of example 9, and the electroluminescent signboard of comparative example 1, which was compared with the above, contained no glass beads in the luminescent layer 4, and the composition ratio and thickness of the other layers were the same.
The specific comparative test is that the electroluminescent signs of example 9 and comparative example 1 are made into signs with the same size, external light sources are respectively provided for the two signs at the same position, and then the visibility and the recognition effect of the two signs are tested at different distances. In this comparative test, the test visibility and the recognition effect are the same person, that is, the eyesight is fixed.
The test results are reported in Table 3:
table 3 degree of visibility and discrimination of example 9 and comparative example 1
As can be seen from the experimental results of table 3, example 9 of the present invention and comparative example 1 are both visible in the range of 50 to 300 meters because both have the light emitting layer 4 that is self-luminous. However, at 200 meters, the effect of the representation of comparative example 1 containing no glass beads was significantly reduced, while at the positions of 250 meters and 300 meters, the representation of comparative example 1 had substantially completely lost the effect of the marking; the signboard of the embodiment 9 of the present invention can still recognize the outline of the representation at the position of 300 meters, that is, the signboard of the embodiment 9 still has an effective marking function at the position of 300 meters.
The comparison test verifies the identification effect of adding the glass beads and not adding the glass beads.
This comparative experiment 2 was tested using the electroluminescent signs of examples 1, 3, 5 and comparative examples 2 and 3 described above. Wherein, the light-emitting layer 4 of example 1 contains 1000 mesh glass beads, the light-emitting layer 4 of example 3 contains 1300 mesh glass beads, and the light-emitting layer 4 of example 5 contains 1500 mesh glass beads; the glass beads of 200 mesh were contained in comparative example 2, and the glass beads of 1800 mesh were contained in comparative example 3; the composition ratios and thicknesses of the other layers of comparative examples 2 and 3 were within the range defined by the present invention.
In a specific comparative test, the electroluminescent signs of examples 1, 3 and 5 and comparative examples 2 and 3 were marked with the same size.
The electroluminescent signs were illuminated with the same external light source at different distances, and when the luminous signs of examples 1, 3 and 5 were visible and only the outline could be recognized, the graphic display of the electroluminescent signs was observed at the position of the distance.
It was observed that the reflection ability of comparative example 2 using the glass beads having a small particle size was decreased, and it was difficult to recognize the pattern of the luminescent signboard of comparative example 2 when the luminescent signboard of examples 1, 3, and 5 could recognize only the outline.
The signboard of comparative example 3 with larger glass bead particle size is adopted, and the signboard can be still visible and recognized at the position; however, the edge of the pattern of comparative example 3 was not uniform in light reflection and not sharp in profile because the glass beads thereof had too large a particle size, resulting in non-uniform distribution thereof in the light-emitting layer 4.
It can be seen that the visual and identification effects of comparative examples 2 and 3 are lower than those of the signboards of examples 1, 3 and 5 of the present invention. Although comparative example 3 can recognize the pattern in the comparative test, the edge of the pattern is unclear and the reflection brightness is uneven, so that the pattern is difficult to recognize when a thin pattern is displayed, and the marking effect is lost.
It can be seen from the above comparative experiments 1 and 2 that the electroluminescent signboard of the present invention has a longer visible distance and a better recognition effect due to the glass beads added in the luminescent layer 4. The electroluminescent signboard has wide application scenes, can mark various patterns of different types, can ensure long identification distance and good identification effect, and is particularly suitable for being used as traffic signboards on two sides of a highway for identification and use.
In the description of the present invention, it should be noted that the terms "thickness", "upper", "one side", "the other side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "printing", "mounting" and "fixing" are to be interpreted broadly, and those skilled in the art can specifically understand the meaning of the above terms in the present invention.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. An electroluminescent signboard, which comprises a substrate (7), and is characterized in that an electroluminescent film is fixed on one side of the substrate (7);
the electroluminescent film comprises a transparent conductive film (3), wherein a transparent microprism reflecting film (2) is arranged on one side of the transparent conductive film (3), and a light-emitting layer (4) is arranged on the other side of the transparent conductive film;
a dielectric layer (5) and a back electrode layer (6) are sequentially arranged on the light-emitting layer (4), and the back electrode layer (6) is positioned on the base material (7);
the component of the light-emitting layer (4) comprises glass beads.
2. An electroluminescent signboard as claimed in claim 1, characterized in that the luminescent layer (4) consists of the following components in mass percent: 43-56% of ZnS-Cu luminescent material, 40-52% of resin, 2-3% of glass beads and 2-3% of curing agent.
3. The electroluminescent sign according to claim 2, wherein the resin is at least one of a polyurethane resin and an epoxy resin.
4. The electroluminescent signboard of claim 3 wherein the glass beads comprise one or both of 1000 mesh glass beads, 1300 mesh glass beads and 1500 mesh glass beads.
5. An electroluminescent signboard as claimed in claim 4, characterized in that the luminescent layer (4) consists of the following components in mass percent: 52% of ZnS-Cu luminescent material, 3% of polyurethane resin, 40% of epoxy resin, 1% of 1300-mesh glass beads, 2% of 1500-mesh glass beads and 2% of curing agent.
6. An electroluminescent signboard as claimed in any one of claims 1 to 5 wherein the thickness of the light-emitting layer (4) is 20 to 50 μm.
7. The electroluminescent signboard of any one of claims 1 to 5, wherein the dielectric layer (5) comprises the following components in mass percent: 48-49% of inorganic particle medium, 48% of resin and 3-4% of curing agent; and the sum of the mass percentages of the inorganic particles, the resin and the curing agent is 100%; the inorganic particles are at least two of barium titanate, barium sulfate and titanium dioxide.
8. The electroluminescent sign according to any one of claims 1 to 5, wherein the transparent conductive film has a sheet resistance of 20 to 150 Ω/□.
9. The electroluminescent signboard of any one of claims 1 to 5, wherein a transparent protective layer (1) is respectively disposed on the transparent microprism reflective film (2) and between the back electrode layer (6) and the substrate (7).
10. A method of making an electroluminescent sign according to any one of claims 1 to 9, comprising the steps of:
attaching the transparent micro prism layer (2) to one side of the transparent conductive film (3); obtaining the electroluminescent film;
respectively preparing ink solutions of the light-emitting layer (4) and the dielectric layer (5), and preparing conductive slurry of the back electrode layer (6);
printing the ink solution of the light-emitting layer (4) on the other side of the transparent conductive film (3), and drying;
printing the ink solution of the dielectric layer (5) on the dried luminescent layer (4), and drying;
printing the conductive slurry of the back electrode layer (6) on the dried dielectric layer (5), and drying;
fixing the back electrode layer (6) of the electroluminescent film on one side of the substrate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111562990.4A CN114241948A (en) | 2021-12-20 | 2021-12-20 | Electroluminescent signboard and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111562990.4A CN114241948A (en) | 2021-12-20 | 2021-12-20 | Electroluminescent signboard and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114241948A true CN114241948A (en) | 2022-03-25 |
Family
ID=80759295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111562990.4A Pending CN114241948A (en) | 2021-12-20 | 2021-12-20 | Electroluminescent signboard and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114241948A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6267482B1 (en) * | 1999-01-29 | 2001-07-31 | General Security Services Corporation | Safety vest |
| CN102354473A (en) * | 2011-10-31 | 2012-02-15 | 安徽海盛纳米新材料科技有限公司 | High-brightness long-afterglow luminescent indicator plate and preparation method thereof |
| CN106905871A (en) * | 2017-03-08 | 2017-06-30 | 常州华日升反光材料有限公司 | From light-accumulated luminous Microprism reflective membrane |
| WO2018028251A1 (en) * | 2016-08-08 | 2018-02-15 | 福建三昊科技有限公司 | Reflective film surface layer, surface protection film, reflective film and manufacturing process thereof |
| DE102017218187A1 (en) * | 2017-10-12 | 2019-04-18 | Robert Bosch Gmbh | Miniature spectrometer and method for the spectral analysis of an object |
| CN110267405A (en) * | 2019-06-21 | 2019-09-20 | 广东彩乐智能包装科技有限公司 | A kind of all print electroluminescent device and preparation method thereof |
| CN209657733U (en) * | 2019-04-16 | 2019-11-19 | 山东创安交通预警工程有限公司 | Self-luminous Penetrating Fog sign board |
| CN112820835A (en) * | 2020-12-31 | 2021-05-18 | 湖南鼎一致远科技发展有限公司 | Electroluminescent device of PVC (polyvinyl chloride) base material and preparation method |
| US20210245473A1 (en) * | 2020-02-10 | 2021-08-12 | Chance Line Industrial Co., Ltd. | Fiber with light-reflective and luminescent functions and textile with such fiber |
-
2021
- 2021-12-20 CN CN202111562990.4A patent/CN114241948A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6267482B1 (en) * | 1999-01-29 | 2001-07-31 | General Security Services Corporation | Safety vest |
| CN102354473A (en) * | 2011-10-31 | 2012-02-15 | 安徽海盛纳米新材料科技有限公司 | High-brightness long-afterglow luminescent indicator plate and preparation method thereof |
| WO2018028251A1 (en) * | 2016-08-08 | 2018-02-15 | 福建三昊科技有限公司 | Reflective film surface layer, surface protection film, reflective film and manufacturing process thereof |
| CN106905871A (en) * | 2017-03-08 | 2017-06-30 | 常州华日升反光材料有限公司 | From light-accumulated luminous Microprism reflective membrane |
| DE102017218187A1 (en) * | 2017-10-12 | 2019-04-18 | Robert Bosch Gmbh | Miniature spectrometer and method for the spectral analysis of an object |
| CN209657733U (en) * | 2019-04-16 | 2019-11-19 | 山东创安交通预警工程有限公司 | Self-luminous Penetrating Fog sign board |
| CN110267405A (en) * | 2019-06-21 | 2019-09-20 | 广东彩乐智能包装科技有限公司 | A kind of all print electroluminescent device and preparation method thereof |
| US20210245473A1 (en) * | 2020-02-10 | 2021-08-12 | Chance Line Industrial Co., Ltd. | Fiber with light-reflective and luminescent functions and textile with such fiber |
| CN112820835A (en) * | 2020-12-31 | 2021-05-18 | 湖南鼎一致远科技发展有限公司 | Electroluminescent device of PVC (polyvinyl chloride) base material and preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100459780B1 (en) | Electroluminescent retroreflective article | |
| JP4225599B2 (en) | Image display sheet and image display system | |
| JPH11175007A (en) | Self-luminous retroreflection sheet capable and manufacture thereof | |
| TWM575766U (en) | Improved electroluminescent sticker | |
| US20010035716A1 (en) | Electroluminescent multiple segment display device | |
| US7357551B2 (en) | Image display device with microlight sources and soft light panel | |
| CN114241948A (en) | Electroluminescent signboard and preparation method thereof | |
| CN201054824Y (en) | EL slice with new structure | |
| CN114255679A (en) | Electroluminescent signboard and preparation method thereof | |
| CN106190110A (en) | Electroluminescent device and there is its self-luminous Vehicular skylight | |
| CN206149559U (en) | Electroluminescent device | |
| CN101271945A (en) | Electroluminescent panel, its production method and electroluminescent display device | |
| CN211295151U (en) | Flexible electroluminescent sheet | |
| CN201413616Y (en) | Luminous light-reflecting dual display board | |
| CN111305549B (en) | Aluminum alloy template with two-dimensional code label | |
| CN202584645U (en) | Light reflecting and emitting sign | |
| CN2256139Y (en) | Luminous device of advertisement or demonstrative boards | |
| CN206024188U (en) | Electroluminor | |
| CN220324107U (en) | Flexible luminous device with staff | |
| KR101400422B1 (en) | Lighting structure of inorganic el panel and display device using the same | |
| CN219032989U (en) | Traffic sign board capable of emitting light on two sides | |
| CN210420915U (en) | Self-luminous marking line | |
| CN2570918Y (en) | Ultra-thin luminous flickering cautionary mark for traffic system and vehicle | |
| CN2566409Y (en) | Built-in driving source energy-storage luminlus emergency marker lamp | |
| JPH07210091A (en) | Stop display plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220325 |
|
| RJ01 | Rejection of invention patent application after publication |