An electroluminescent layer structure

Abstract

The utility model discloses a kind of electroluminescent layer structures, it is related to computer case technical field, including product shell, its surface is equipped with the luminous pattern of electrically conducting luminous, luminous pattern is successively from bottom to top insulating bottom layer, electroluminescent ink layer and protective ink layer. Insulating bottom layer uses high-temperature-resistant insulating ink, edge exceeds luminous area;Electroluminescent ink layer can be set as pattern, text and various styles, through the positive electrode and negative electrode of conductive silver paste material and conductor connection;Plug specification can be set to two or three, it is convenient and mainboard plug-in;Protective ink layer is high light transmittance polyurethane ink, edge and luminous layer flush. The scheme does not need lamp pearl, realizes self-defined luminous pattern by printing, luminous is uniform, assembly is simple, security and durability are good, in addition, electrically conducting luminous can be applied to the surface of any electronic product.

Description

Technical Field

[0001] This utility model relates to the field of computer chassis technology, and in particular to an electroluminescent layer structure. Background Technology

[0002] Currently, most computer case lighting decorations use LED beads or LED strips. These are installed inside or along the edges of the case, and combined with light guide plates or side panels to create a lighting effect. However, this traditional lighting method has several limitations: First, the beads or strips are relatively large, requiring additional installation space, and the case structure limits the precise rendering of complex patterns. Second, the luminous area is determined by the distribution of the beads, resulting in poor light uniformity and the appearance of light spots or uneven brightness. Third, the assembly of the beads to the case requires brackets and screws, a cumbersome process with complex wiring connections that can easily generate electromagnetic interference. Fourth, the patterns are fixed, preventing users from customizing the lighting patterns to their needs, thus lacking flexibility. Furthermore, the beads are prone to attenuation or damage after long-term use, affecting the overall lighting effect and lifespan, increasing maintenance costs. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model proposes an electroluminescent layer structure.

[0004] This utility model proposes an electroluminescent layer structure, including a product housing. The surface of the product housing is provided with a light-emitting pattern that emits light when energized. The light-emitting pattern includes an insulating base layer disposed on the surface of the product housing. An electroluminescent ink layer is disposed on the surface of the insulating base layer. A protective ink layer is disposed on the surface of the electroluminescent ink layer. The electroluminescent ink layer is connected to a main board in the product housing through a conductor to supply power to the electroluminescent ink layer.

[0005] Furthermore, the electroluminescent ink layer is configured as one or more of graphics, text, or letters, with a thickness of 20-30 μm.

[0006] Furthermore, conductive electrodes are printed on the surface of the electroluminescent ink layer, and the conductive electrodes are made of conductive silver paste.

[0007] Furthermore, the conductive electrode includes a positive electrode and a negative electrode, with one end of the positive electrode and the negative electrode connected to the electroluminescent ink layer and the other end connected to a conductor.

[0008] Furthermore, the end of the conductor is connected to a pin connector, which can be configured as a two-prong or three-prong connector to facilitate connection with pins on the motherboard.

[0009] Furthermore, the insulating underlayer is made of high-temperature resistant insulating ink with a thickness of 10-20μm, and the edge of the insulating underlayer extends 5-10mm beyond the edge of the electroluminescent ink layer.

[0010] Furthermore, the protective ink layer is configured as a high-transmittance polyurethane ink with a thickness of 5-10 μm, and the edge of the protective ink layer is flush with the edge of the electroluminescent ink layer.

[0011] The beneficial effects of this utility model are: the luminescent coating is a luminescent coating that uses inorganic electroluminescence. Electroluminescence is an optical and electrical phenomenon. This optical phenomenon causes the material to emit light. Under the condition of current passing through or a strong electric field, the electroluminescent layer can emit bright light.

[0012] By sequentially setting an insulating base layer, an electroluminescent ink layer, and a protective ink layer on the surface of the product casing, the electroluminescent ink's light-emitting properties replace traditional LED beads. This eliminates the need for additional LED beads and brackets. It not only enables the precise presentation of any custom patterns such as graphics and text through printing processes, but also provides uniform light emission without light spots. Meanwhile, the insulating base layer and protective ink layer ensure safety and durability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram showing the disassembled structure of the luminescent pattern in this utility model;

[0015] Figure 3 This is a schematic diagram showing the connection between the electroluminescent ink layer and the wires in this utility model;

[0016] Figure 4 This is a schematic diagram of the assembly structure of the luminescent pattern in this utility model.

[0017] In the diagram: 1. Product casing; 2. Illuminated pattern; 21. Electroluminescent ink layer; 22. Conductor; 23. Conductive electrode; 231. Positive electrode; 232. Negative electrode; 24. Pin connector; 25. Insulating underlayer; 26. Protective ink layer. Detailed Implementation

[0018] Reference Figure 1-4 The present invention proposes an electroluminescent layer structure, including a product shell 1, and a flat area reserved on the surface of the computer host body 1 for setting the luminescent pattern 2, such as a side panel or front panel. This area is pre-treated by grinding and degreasing to improve the ink adhesion performance.

[0019] It should be noted that the product casing includes computer peripherals such as mice, keyboards, computer cases, graphics cards, and cooling fans.

[0020] The luminous pattern 2 is set as follows:

[0021] First, an insulating underlayer 25 is printed in a preset area of ​​the product housing 1. High-temperature resistant insulating ink, such as epoxy resin insulating ink, is used. It is formed by screen printing. After printing, it is baked at 120°C for 30 minutes to cure. The thickness is controlled at 10-20μm to ensure effective insulation protection for the subsequent electroluminescent ink layer 21.

[0022] An electroluminescent ink layer 21 is printed on the surface of the insulating base layer 25 according to a preset pattern. The ink layer is made of zinc sulfide phosphor, silver nanowire conductive medium and acrylate resin. It is formed by screen printing or UV inkjet process. After printing, it is semi-cured by baking at 80°C for 20 minutes. The thickness is controlled at 20-30μm to realize the function of emitting light when powered.

[0023] A protective ink layer 26 is printed on the surface of the electroluminescent ink layer 21. The high-transmittance polyurethane ink is used to cover the entire electroluminescent ink layer 21 through screen printing. After being baked at 60℃ for 30 minutes, it is cured and has a thickness of 5-10μm, which plays a protective role against scratches and oxidation.

[0024] The electroluminescent ink layer 21 is connected to the motherboard in the product housing 1 through the conductor 22. The conductor 22 is made of tin-plated copper wire with a wire diameter of 0.3-0.5mm². One end is connected to the conductive electrode of the electroluminescent ink layer 21, and the other end is connected to the motherboard power supply interface through the pin connector to achieve stable power supply.

[0025] It should be noted that the conductor material can be a wire harness or an FFC flexible circuit board. The conductor is connected to the computer host for power supply to achieve the function of lighting. Moreover, the color of the light can be adjusted according to the color of the coating, which is a conventional technical method. In addition, the bottom of the light-emitting layer of this patent is provided with an insulating layer, so it will not affect the computer host.

[0026] Among them, the electroluminescent ink layer 21 can be set as graphics, such as brand logo, geometric texture, text, such as product model or letters, such as brand abbreviation, or one or more combinations thereof, according to design requirements. Its thickness is precisely controlled by the printing process. Specifically, during printing, the screen mesh number is adjusted to 200-300 mesh and the squeegee pressure is 5-10N to ensure that the thickness of the ink layer is stable at 20-30μm after curing, and that the surface is uniform without bubbles or missing prints, thus ensuring uniform light emission.

[0027] Conductive electrodes 23 are set on the surface of the electroluminescent ink layer 21 by screen printing. The conductive electrodes 23 are made of conductive silver paste with a conductivity resistance of ≤0.1Ω / cm. During printing, the conductive silver paste is printed on the edge area of ​​the electroluminescent ink layer 21 through a 150-mesh screen printing plate. After printing, it is baked at 100℃ for 20 minutes to cure, forming a conductive path that is in close contact with the electroluminescent ink layer 21, ensuring that the current is uniformly conducted to the entire ink layer.

[0028] The conductive electrode 23 includes a positive electrode 231 and a negative electrode 232 that are parallel to each other. They are respectively disposed on both sides of the electroluminescent ink layer 21. One end of the positive electrode 231 and the negative electrode 232 are in complete contact with the electroluminescent ink layer 21 through a printing process, and the contact length is not less than 80% of the width of the ink layer. The other end is connected to the wire of the conductor 22 through a spot welding process. The solder joint is wrapped with an insulating sleeve to prevent short circuit and ensure that the current is input from the positive electrode, passes through the electroluminescent ink layer and is output from the negative electrode to form a closed loop.

[0029] It should be noted that the direct current is converted to alternating current, and the alternating voltage varies from 80 to 220V.

[0030] The power consumption varies depending on the transformer, roughly around A4 9W, A3 18W, and A2 32W.

[0031] The end of conductor 22 away from conductive electrode 23 is connected to pin connector 24 by soldering process. The pin connector 24 can be configured as a two-prong or three-prong connector. Its pin definitions correspond one-to-one with the interface pins on the computer motherboard, including power positive, signal, and ground. During assembly, the pin connector 24 is directly plugged into the ARGB interface pins on the motherboard without additional adapters, realizing convenient electrical connection and signal communication with the motherboard.

[0032] The insulating base layer 25 uses high-temperature resistant insulating ink, such as polyimide ink, with a temperature resistance range of not less than 120℃ and a volume resistivity ≥10¹²Ω・cm. During screen printing, the printing thickness is strictly controlled, resulting in a cured thickness of 10-20μm. Simultaneously, the printing area of ​​the insulating base layer 25 completely covers the electroluminescent ink layer 21, and its edge extends 5-10mm beyond the edge of the luminescent pattern 2, ensuring no leakage risk between the electroluminescent ink layer 21 and the product casing 1.

[0033] The protective ink layer 26 uses high-transmittance polyurethane ink with a transmittance of ≥90%, ensuring that the light from the electroluminescent ink layer 21 can be effectively transmitted. When printing by screen printing, the amount of ink is controlled so that the thickness after curing is 5-10μm, and the edge of the protective ink layer 26 is completely flush with the edge of the electroluminescent ink layer 21, which not only ensures the full protection of the light-emitting area, but also does not obscure the outline of the preset light-emitting pattern, so that the pattern is displayed clearly and completely.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An electroluminescent layer structure, comprising a product casing (1), characterized in that, The surface of the product housing (1) is provided with a light-emitting pattern (2) that emits light when powered. The light-emitting pattern (2) includes an insulating base layer (25) provided on the surface of the product housing (1). An electroluminescent ink layer (21) is provided on the surface of the insulating base layer (25). A protective ink layer (26) is provided on the surface of the electroluminescent ink layer (21). The electroluminescent ink layer (21) is connected to the main board in the product housing (1) through a conductor (22) to supply power to the electroluminescent ink layer (21).

2. The electroluminescent layer structure according to claim 1, characterized in that, The electroluminescent ink layer (21) is configured as one or more of graphics, text or letters, with a thickness of 20-30 μm.

3. The electroluminescent layer structure according to claim 1, characterized in that, The surface of the electroluminescent ink layer (21) is printed with a conductive electrode (23), which is made of conductive silver paste.

4. The electroluminescent layer structure according to claim 3, characterized in that, The conductive electrode (23) includes a positive electrode (231) and a negative electrode (232). One end of the positive electrode (231) and the negative electrode (232) are connected to the electroluminescent ink layer (21), and the other end is connected to the conductor (22).

5. The electroluminescent layer structure according to claim 1, characterized in that, The end of the conductor (22) is connected to a pin connector (24), which can be configured as a two-prong or three-prong connector to facilitate connection with pins on the motherboard.

6. The electroluminescent layer structure according to claim 1, characterized in that, The insulating base layer (25) is made of high temperature resistant insulating ink with a thickness of 10-20μm, and the edge of the insulating base layer (25) extends 5-10mm beyond the edge of the electroluminescent ink layer (21).

7. The electroluminescent layer structure according to claim 1, characterized in that, The protective ink layer (26) is made of high light transmittance polyurethane ink with a thickness of 5-10 μm. The edge of the protective ink layer (26) is flush with the edge of the electroluminescent ink layer (21).

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