TWM593071U - Electroluminescence equipment - Google Patents

Abstract

An electrical excitation device is provided with a first conductive layer, a dielectric spacer layer, an electrical excitation light layer and a second conductive layer, the dielectric spacer layer and the electrical excitation light layer are located between the first conductive layer and the second conductive layer The dielectric spacer layer is located between the first conductive layer and the electro-luminescence layer. The electro-luminescence layer is located between the dielectric spacer layer and the second conductive layer. The electrical spacing layer, the electrical excitation light layer, and the second conductive layer achieve the effect of mass production and high-quality electrical excitation light equipment.

Description

Electrical excitation equipment

An electroluminescence device, in particular, an electroluminescence device that can be formed on the surface of a substrate with a complex contour and is convenient for mass production and has the effect of high-quality electroluminescence devices.

Electroluminescence (EL) is a phenomenon that uses electroluminescence. The basic principle is to sandwich a suitable luminescent material between two conductive layers. When current flows, the luminescent material will emit visible light, and The light-emitting element manufactured by using this light-emitting mode has the advantages of light weight and thin thickness; therefore, in recent years, light-emitting elements such as electroluminescence (EL) have been used for self-luminous display devices of pixels, so-called light-emitting devices striking. As light-emitting elements used for such self-luminous display devices, organic light-emitting diodes (OLEDs) and EL elements have attracted attention, and have been applied to EL displays and the like. Since these light emitting elements emit light by themselves, the visibility of their pixels is better than that of a liquid crystal display, and therefore no backlight is required.

Electroluminescence (EL) technology has been widely used in display devices, and its relatively low power consumption, relative brightness, and ability to be formed in relatively thin-film configurations have shown that it is superior to light-emitting diode (LED) and incandescent lamp technologies for many applications . Traditionally, electroluminescence (EL) equipment has been manufactured commercially using blade coating and printing processes (such as screen printing or recent inkjet printing). For applications that require relatively flat EL devices, these processes work quite well because they can be mass-produced through relatively effective and reliable quality control. However, for applications that require EL devices to be applied to surfaces with complex contours (such as convex, concave, and inverted surfaces), traditional processes are inherently limited.

Part of the solution has been developed so far, where an EL decal of opposite film is applied to the surface, and the decal is subsequently encapsulated in a polymer matrix. Although moderately successful, this solution has several essential weaknesses. First of all, although decals are acceptable for gentle concave/convex surfaces, they cannot conform to tight radius curves without stretching or wrinkling. In addition, the decal itself does not form a chemical bond or a mechanical bond with the encapsulating polymer, and basically retains foreign matter embedded in the encapsulating matrix. Nowadays, the manufacturing cost of electroluminescence devices cannot be easily reduced. Furthermore, the substrates used for electroluminescence devices are all hard materials, so the application field is limited, such as soft materials such as hats and clothes, or Objects with uneven surfaces cannot be implemented.

Therefore, in this case, how to break through its technical bottlenecks through innovation and achieve mass-produced electrical excitation devices with the effect of high-quality EL devices is an important subject of creative research.

The main purpose of this creation is to provide an electroluminescent device, including a laminated and film-like first conductive layer, a dielectric spacer layer, an electroluminescent layer, and a second conductive layer to achieve mass production and high quality The effect of electrical excitation equipment.

To achieve the above purpose, the electroluminescence device of the present invention is provided with a first conductive layer, a dielectric spacer layer, an electroluminescent layer and a second conductive layer. The dielectric spacer layer and the electroluminescent layer are located on the first conductive layer Between the second conductive layer, the dielectric spacer layer is located between the first conductive layer and the electrical excitation light layer, the electrical excitation light layer is located between the dielectric spacer layer and the second conductive layer, the first conductive layer is essentially A conductive polymer, an environmentally friendly solvent and a binder are mixed, and a thin film formed by coating in a liquid state and dried, and a dielectric spacer layer is formed by mixing a dielectric material powder with a high dielectric coefficient, an environmentally friendly solvent and a binder, It is coated on the first conductive layer in a liquid state and then dried to form a thin film. The electro-excited layer is formed by mixing the electro-excited powder, environmentally friendly solvent and adhesive, and applied on the dielectric spacer layer in a liquid state The post-dried film and the second conductive layer are made of a mixture of light-transmitting conductive materials and environmentally friendly solvents. They are applied on the electro-luminescent layer through the liquid state and then dried and formed. The first conductive layer and the second conductive layer The layer is used to connect the conductive wire and the external power supply to form an electrical excitation device.

The embodiments embodying the features and advantages of the present case will be described in detail in the following paragraphs. It should be understood that this case can have various changes in different forms, and they all do not deviate from the scope of this case, and the descriptions and illustrations therein are essentially used for explanation, not for limiting the case.

Please refer to the first figure, the electro-luminescence equipment in this case can be covered on the substrate 1 to form an electro-luminescence (Electroluminescent; EL for short) equipment. The substrate 1 can be a flexible material, and its surface can be concave/ Convex surface, but not limited to this; the above-mentioned electrical excitation light device includes a first conductive layer 2 and a dielectric spacer layer 3, an electrical excitation light layer 4 and a second stacked on the first conductive layer 2 in sequence Conductive layer 5.

The above-mentioned dielectric spacer layer 3 and the electroluminescent layer 4 are located between the first conductive layer 2 and the second conductive layer 5, and the dielectric spacer layer 3 is located between the first conductive layer 2 and the electroluminescent layer 4, The electroluminescence layer 4 is located between the dielectric spacer layer 3 and the second conductive layer 5.

The above-mentioned first conductive layer 2 is composed of an intrinsically conductive polymer, an environmentally friendly solvent and a binder, and is a thin film formed by coating in a liquid state and dried, and is formed as a first electrode portion, which can be connected to a conductive wire. For connection with external power supply. In this embodiment, the intrinsically conductive polymer may be 5-40% by weight. The intrinsically conductive polymer may be conductive polymer, highly conductive metal powder or conductive pigment; the highly conductive metal powder may be a common single metal powder or a mixture of multiple metals The metal alloy powder is a single metal such as one of gold, silver, copper, nickel, zinc, tin and aluminum. The metal alloy powder is preferably an alloy powder composed of copper and other metals. The metal alloy is copper silver alloy or copper. One of zinc alloy, copper-nickel alloy, copper-tin alloy; conductive pigments include any one or more of silver flakes, silver nanowires, silver nanoparticles, copper flakes, copper nanowires, copper nanoparticles, nickel flakes, nickel Nanowires, nickel nanoparticles, silver-plated copper flakes, silver-plated copper nanowires, carbon nanotubes, graphene, metal-coated particles or other intrinsically conductive particles, usually silver flakes or silver-plated copper flakes to achieve the first conductivity Layer 2 has a highly reliable conductive surface layer film. In this embodiment, the intrinsically conductive polymer is preferably silver-plated copper; the environmentally friendly solvent can be 51 to 94 weight percent, and the environmentally friendly solvent can be miscible with alcohols or ethers Environmentally friendly solvent, which helps the powder deposition of the intrinsically conductive polymer and the flow after deposition; the binder can be 1-9 weight percent. The binder includes acrylic, polyurethane, vinyl, latex, cellulose acetate butyrate or Any one or more of the others, preferably polyurethane, or acrylic. Of course, the first conductive layer 2 of this embodiment can also be added with a suitable dispersant. The dispersant can be a polyether phosphate-based dispersant, which has a highly dispersing effect, making it easy to mix intrinsically conductive polymers, environmentally friendly solvents, and adhesives. The spraying process is carried out in a liquid state.

The above-mentioned dielectric spacer layer 3 is a thin film formed by mixing a dielectric material powder with a high dielectric coefficient, an environmentally friendly solvent and a binder, and coating the first conductive layer 2 in a liquid state and then drying. In this embodiment, the high dielectric constant powder can be 5-40% by weight. The high dielectric constant powder can include barium titanate, strontium titanate, titanium dioxide, lead zirconate titanate, and tantalum oxide. And one or more of alumina or other high-dielectric solids; the environmental protection solvent can be 51~94% by weight. The environmental protection solvent includes environmentally friendly solvents that can be miscible with alcohols or ethers. The material powder and the dielectric resin are conveniently mixed into a liquid state to implement the spraying process, and the environmentally friendly solvent helps the deposition of the dielectric material powder with high dielectric coefficient and the flow after deposition; the adhesive can be 1-9 weight percent, the adhesive Including any one or more of acrylic acid, polyurethane, vinyl, latex, cellulose acetate butyrate or others, preferably polyurethane or acrylic; of course, the dielectric spacer layer 3 of this embodiment can also be added with a suitable dispersant to disperse The agent can be a polyether carboxylic acid amine dispersant, which has a high dispersion effect, which helps the dielectric spacer layer 3 to be applied in a liquid state during the coating process. When it is atomized to the surface of the first conductive layer 2, the high dielectric constant The dielectric material powder flows uniformly and uniformly into a thin film.

The above-mentioned electro-excited light layer 4 is a film formed by mixing electro-excited light powder, environmentally friendly solvent and adhesive, and coated on the dielectric spacer layer 3 in a liquid state and dried to form. In this embodiment, the electric excitation powder may be 5-30% by weight. The electric excitation powder includes metal-doped zinc sulfide phosphor, metal-doped zinc selenide phosphor, metal-doped and natural crystalline At least one of the oxides in any combination of groups, such as Ga 2 O 3, ZnGa 2 O 4, Ca 2 O 4, Zn 2 SiO 7, Zn 2 SiO 4, Y 2 SiO 5 any one or Multiple, and in some combinations, a group of at least one of strontium (Sr), gallium (Ga), barium (Ba), and europium (Eu) oxide phosphors in any combination, or other electrically excited light Phosphor, ITO conductive paste, ATO conductive liquid, graphene, or one or more of silver nanowires. In the embodiment of the present invention, the fluorescent powder is preferably used; the environmental protection solvent can be 61~ 94% by weight, environmentally friendly solvents include environmentally friendly solvents that can be miscible with alcohols or ethers. Not only can the electro-excited powder and the binder be easily mixed into a liquid state to implement the spraying process, but also the environmentally friendly solvent can help the powder deposition of the electro-excited powder And the flow after deposition; the adhesive may be 1-9 weight percent, the adhesive includes any one or more of acrylic acid, polyurethane, vinyl, latex, cellulose acetate butyrate or others, preferably polyurethane, or acrylic; of course, The electro-luminescence layer 4 of this embodiment can also be added with a suitable dispersant. The dispersant can be a polyether salt-based dispersant, which has a high dispersion effect, which is helpful for the electro-optical powder coating process in the liquid state. When atomized to the surface of the dielectric spacer layer 3, the electrical excitation light powder is allowed to flow into a thin film uniformly and uniformly.

The above-mentioned second conductive layer 5 is made of a mixture of light-transmitting conductive materials and environmentally friendly solvents, applied on the electroluminescent layer 4 in a liquid state, and then dried to form a thin film, and forms a second electrode portion, which can be connected to the conductive Line for connection to an external power supply. In this embodiment, the light-transmitting conductive material may be 0.5 to 1.9 weight percent, and the light-transmitting conductive material includes one or more of ITO conductive paste, ATO conductive liquid, graphene or nano silver wire; The environmentally friendly solvent can be 97.1-99.5 weight percent. Environmentally friendly solvents include environmentally friendly solvents that can be miscible with alcohols or ethers. Not only can the electro-optical powder and binder be easily mixed into a liquid state to implement the spraying process, but environmentally friendly solvents can help The deposition of light conductive material and the flow after deposition.

In a specific implementation, the first electrode portion of the first conductive layer 25 and the second electrode portion of the second conductive layer 5 are respectively connected to conductive lines (not shown) of the external power source, so that the first conductive layer 2 and the second The conductive layer 5 can excite the dielectric spacer layer 3 and the electrical excitation light layer 4 by the current provided by an external power source, so that the electrical excitation light layer 4 generates bright light, and is projected to the outside through the transparent second conductive layer 5 to form an electricity Excitation light equipment.

It can be seen from the above description that the electrical excitation light equipment in this case can be covered on the substrate 1 to form an electrical excitation light equipment, of course, the electrical excitation light equipment can be further provided with a light-transmitting protective cover layer 6 (as shown in the first figure) to form The appearance protection of an electrical excitation device. The above-mentioned light-transmitting protective cover layer 6 is made of a resin composition and an environmentally friendly solvent, and is applied to the second conductive layer 5 in a liquid state and dried to form a thin film. In this embodiment, the essential resin composition may be a resin composition of a transparent material; environmentally friendly solvents include environmentally friendly solvents that are miscible with alcohols or ethers, which not only allows the resin composition to be easily mixed into a liquid state to implement the spraying process, and is environmentally friendly The solvent contributes to the deposition of the resin composition and the flow after deposition; of course, the light-transmitting protective cover layer 6 of this embodiment can also be added with a suitable dispersant, which can be a polyether carboxylic acid amine dispersant, which helps When the light-transmitting protective cover layer 6 is applied in a liquid state coating process and atomized onto the surface of the second conductive layer 5, the resin composition is allowed to flow uniformly and uniformly into a thin film. Therefore, in specific implementation, the first electrode portion of the first conductive layer 25 and the second electrode portion of the second conductive layer 5 are respectively connected to the conductive wires (not shown) of the external power supply, so that the first conductive layer 2 and the second The second conductive layer 5 can excite the dielectric spacer layer 3 and the electrically excited light layer 4 by the current provided by the external power source, so that the electrically excited light layer 4 generates bright light, and passes through the transparent second conductive layer 5 and the transparent protective cover layer 6 Projected to the outside to form an electric excitation device, so it should be on the uneven locomotive components such as the rear grip of the locomotive to improve the safety of the locomotive at night, and can even be applied to helmets, raincoats or road traffic numbers Objects such as Zhi that need to be conspicuous at night are extremely industrially usable.

Of course, the above-mentioned processes of the dielectric spacer layer 3, the electroluminescent layer 4 and the light-transmissive protective cover layer 6 can further use an aqueous environmentally friendly solvent to make the first conductive layer 2, the dielectric spacer layer 3, the electroluminescent layer 4 and the transparent The photoprotective cover layer 6 exhibits water when in a liquid state, so as to increase the operability of coating and adhesion, and has a faster drying speed.

The above-mentioned liquid state coating process, in one embodiment, may be an embodiment in which spray coating is applied by high-pressure low-volume spray technology, in which each coating is atomized by compressed air and deposited on the conformal substrate in this way , And then the coating is properly flowed after deposition; in another embodiment, it can be implemented by aerosol spray technology, each coating is atomized by the propellant in the tank, and in this way Deposited on the conformal substrate, and then the coating flows after deposition to obtain an appropriate film thickness; the above-mentioned liquid state coating process, in yet another embodiment, may be an embodiment of applying spraying by electrostatic spraying technology, where each A coating is atomized by compressed air and deposited on the charged surface of the conformal substrate in this way, and then the coating flows after deposition to obtain an appropriate film thickness.

In summary, the present invention provides an electroluminescence device, the main electroluminescence device, in particular, through a liquid state spraying process to form a thin film-like dielectric spacer layer and an electroluminescence light sequentially stacked on the film-like first conductive layer The layer and the second conductive layer are implemented on the surface of the substrate with a complex contour to form an electrical excitation device, which achieves the effect of mass production and high-quality electrical excitation device.

Even though this case has been described in detail by the above-mentioned embodiments and can be modified by any person skilled in the art as a craftsman, it does not detract from the protection of the patent application.

1: substrate 2: The first conductive layer 3: dielectric spacer 4: electric excitation light layer 5: Second conductive layer 6: Translucent protective cover

The first figure is a schematic cross-sectional view of the electrical excitation device in this case.

1: substrate

2: The first conductive layer

3: dielectric spacer

4: electric excitation light layer

5: Second conductive layer

6: Translucent protective cover

Claims (20)

An electrical excitation device is provided with a first conductive layer, a dielectric spacer layer, an electrical excitation light layer and a second conductive layer, the dielectric spacer layer and the electrical excitation light layer are located between the first conductive layer and the second conductive layer Between, the dielectric spacer layer is located between the first conductive layer and the electrical excitation light layer, the electrical excitation light layer is located between the dielectric spacer layer and the second conductive layer, the first conductive layer is made of intrinsically conductive polymer, environmentally friendly solvent It is mixed with adhesive, and is formed by coating in a liquid state and dried to form a thin film. The dielectric spacer layer is formed by mixing a dielectric material powder with a high dielectric coefficient, an environmentally friendly solvent, and a binder, and coating in a liquid state. After the first conductive layer is dried and formed into a film, the electro-excited light layer is formed by mixing the electro-excited light powder, environmentally friendly solvent and binder, and coated on the dielectric spacer layer in a liquid state and dried to form the film. The second conductive layer is made of a mixture of light-transmitting conductive materials and environmentally friendly solvents. It is applied to the electroluminescent layer through a liquid state and then dried to form a thin film. The first conductive layer and the second conductive layer are used to connect conductive wires Connect with external power supply to form an electrical excitation device. The electrical excitation device according to claim 1, wherein the surface of the second conductive layer is formed by mixing a resin composition and an environmentally friendly solvent, applying the liquid on the second conductive layer, and drying the formed film through The light protection cover layer is such that the second conductive layer is located between the electrical excitation light layer and the light-transmitting protection cover layer. The electrical excitation device as described in claim 1, wherein the intrinsically conductive polymer of the first conductive layer is 5-40% by weight, the environmentally friendly solvent is 41-94% by weight, and the adhesive is 1-19% by weight. The electro-luminescence device according to claim 1, wherein the intrinsic conductive polymer of the first conductive layer is a conductive polymer. The electrical excitation device as claimed in claim 1, wherein the intrinsically conductive polymer of the first conductive layer is a highly conductive metal powder. The electrical excitation device according to claim 5, wherein the highly conductive metal powder material is gold, silver, copper, nickel, zinc, tin, aluminum, copper-silver alloy, copper-zinc alloy, copper-nickel alloy, or copper-tin alloy. The electro-luminescent device according to claim 1, wherein the intrinsic conductive polymer of the first conductive layer is a conductive pigment. The electrical excitation light device as described in item 7 of the patent application scope, wherein the conductive pigment is silver flakes, silver nanowires, silver nanoparticles, copper flakes, copper nanowires, copper nanoparticles, nickel flakes, nickel nanowires, nickel Nanoparticles, silver-plated copper flakes, silver-plated copper nanowires, carbon nanotubes, graphene or metal coated particles. The electro-luminescence device according to claim 1, wherein the first conductive layer is further added with a dispersant, and the dispersant is a polyether phosphate-based dispersant. The electro-luminescence device as described in claim 1, wherein the high dielectric constant powder of the dielectric spacer layer is 5-40% by weight, the environmentally friendly solvent is 51-94% by weight, and the adhesive is 1-9% by weight percentage. The electro-luminescence device according to claim 1, wherein the high dielectric constant powder of the dielectric spacer layer is selected from barium titanate, strontium titanate, titanium dioxide, lead zirconate titanate, tantalum oxide or oxide aluminum. The electro-luminescence device according to claim 1, wherein the dielectric spacer layer is further added with a dispersant, and the dispersant is a polyether carboxylic acid amine dispersant. The electrical excitation light equipment according to claim 1, wherein the electrical excitation light powder of the electrical excitation light layer is 5-30% by weight, the environmental protection solvent is 61-94% by weight, and the binder is 1-9% by weight. The electrical excitation light device according to claim 1, wherein the electrical excitation light powder of the electrical excitation light layer is a zinc sulfide phosphor, a metal-doped zinc selenide phosphor, or a metal-doped natural crystalline oxide. The electrical excitation light device according to claim 1, wherein the electrical excitation light powder of the electrical excitation light layer is selected from oxide phosphors of strontium, gallium, barium or europium. The electrical excitation light device according to claim 1, wherein the electrical excitation light powder of the electrical excitation light layer is ITO conductive paste, ATO conductive liquid, graphene, nano silver wire or phosphor powder. The electrical excitation light device according to claim 1, wherein the electrical excitation light layer is added with a dispersant, and the dispersant is a polyetherate type dispersant. The electrical excitation light equipment according to claim 1, wherein the light-transmitting conductive material of the second conductive layer is 0.5 to 1.9 weight percent, and the environmentally friendly solvent is 97.1 to 99.5 weight percent. The electroluminescence device according to claim 1, wherein the environmentally friendly solvent used in the first conductive layer, the dielectric spacer layer, the electroluminescence layer and the second conductive layer is an environmentally compatible solvent in which alcohols or ethers are miscible. The electroluminescence device according to claim 1, wherein the adhesive used in the first conductive layer, the dielectric spacer layer and the electroluminescence layer is acrylic, polyurethane, vinyl, latex or cellulose acetate butyrate.

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