Adhesive tape used in display screen body

Abstract

The utility model discloses an adhesive tape used in a display screen body. The adhesive tape comprises an aluminum alloy layer, a graphene coating arranged on the surface of one side of the aluminum alloy layer in a coating manner, a black heat-conducting silica gel layer arranged on the surface of the other side of the aluminum alloy layer in a coating manner, and a matte reticulated release film of which one side is attached to one side, far away from the aluminum alloy layer, of the black heat-conducting silica gel layer. The electromagnetic shielding plate has the advantages that a good electromagnetic shielding effect and weight reduction can be achieved through the aluminum alloy layer, the aluminum alloy layer is coated with the graphene layer, the synergistic effect of heat radiation and heat conduction can be achieved through the good heat dissipation performance of the graphene layer, the heat dissipation effect is further improved, and by coating the other face of the aluminum alloy layer with the black heat conduction silica gel layer, the heat dissipation efficiency is improved. The black heat conduction silica gel layer has heat conduction and heat dissipation functions, meanwhile, good shock resistance, buffering and absorption performance can be formed through spiral arrangement of silica gel molecules, the matte reticulate release film can make the glue face of the black heat conduction silica gel layer matte, and reflection of light attached to a screen body is reduced.

Description

Technical Field

[0001] The utility model relates to the field of tapes, in particular to a tape for use inside a display screen body. Background Art

[0002] In the current high-strength support, buffering, absorption and heat dissipation structure inside the tablet computer display screen, which is abbreviated as the SCF structure. In order to ensure the heat conduction and heat dissipation performance and the support performance, currently, mainly copper foil or stainless steel with high strength performance is used to meet the support requirements. For large-size applications, the weight is relatively heavy, and the user experience is not good. The buffering performance is mainly solved by attaching imported foam, and the heat dissipation function needs to be solved by additionally attaching a graphite layer at the whole machine stage. Graphite + copper foil + imported foam + double-sided tape, this multi-layer composite structure has a complex processing technology, large loss, and there is a risk of delamination in the multi-layer composite structure. The buffering foam also depends on imported materials, and the density of copper foil and stainless steel is relatively high. For large-size applications, it does not have an advantage in weight and does not conform to the development trend of weight reduction and light weight of electronic products. And the double-sided tape under the imported foam is a polyester film structure without heat conduction effect and even plays a heat insulation effect, which instead reduces the heat conduction performance.

[0003] For example, the Chinese patent with the publication number CN216550235U discloses an OLED screen buffering mechanism, including a foam layer, a PI film layer, a graphite layer, a copper foil layer and an adhesive layer. The copper foil layer is attached to the adhesive layer, the PI film layer is arranged on the copper foil layer, the foam layer is attached to the PI film layer, the graphite layer is embedded between the PI film layer and the copper foil layer. The surface of the copper foil layer in contact with the graphite layer extends to form a number of first heat conduction wires, and the first heat conduction wires sequentially pass through the graphite layer, the PI film layer and the foam layer and form a contact surface on the surface of the foam layer. The surface of the copper foil layer in contact with the adhesive layer extends to form a number of second heat conduction wires, and the second heat conduction wires pass through the adhesive layer and form a contact surface on the surface of the adhesive layer. In the above OLED screen buffering mechanism, the foam layer is used as the buffer layer, and the heat dissipation effect of the foam is not good, reducing the overall heat dissipation effect; using the copper foil layer as the shielding and substrate layer greatly increases the weight of the overall tape.

[0004] In view of this, it is necessary to provide a tape for use inside a display screen body. Summary of the Invention

[0005] The tape for use inside a display screen body provided by the utility model effectively solves the problems of large weight and poor heat conduction performance of the existing tape.

[0006] The technical solution adopted by the utility model is as follows:

[0007] The tape for use inside a display screen body includes an aluminum alloy layer, a graphene coating coated on one side surface of the aluminum alloy layer, a black thermal conductive silicone gel layer coated on the other side surface of the aluminum alloy layer, and a matte textured release film single-sidedly attached to the side of the black thermal conductive silicone gel layer away from the aluminum alloy layer.

[0008] Further: The thickness range of the aluminum alloy layer is 0.03 mm to 0.3 mm.

[0009] Further: The thickness range of the black thermal conductive silicone gel layer is 0.05 mm to 0.3 mm.

[0010] Further: The thickness range of the matte textured release film is 0.03 mm to 0.2 mm.

[0011] Further: The thickness range of the graphene coating is 0.003 mm to 0.03 mm.

[0012] Advantages of the utility model: The use of the aluminum alloy layer can achieve good electromagnetic shielding effect and weight reduction. Coating the graphene layer on the aluminum alloy layer can utilize the good heat dissipation performance of the graphene layer to achieve the synergistic effect of thermal radiation and heat conduction, further improving the heat dissipation effect. By coating the black thermal conductive silicone gel layer on the other side of the aluminum alloy layer, while the black thermal conductive silicone gel layer has both heat conduction and heat dissipation capabilities, it can also utilize the helical arrangement of silicone molecules to form good earthquake resistance, buffering and absorption properties. The matte textured release film can make the adhesive surface of the black thermal conductive silicone gel layer become matte, reducing the light reflection when attached to the screen body. Description of the Drawings

[0013] Figure 1 It is an overall schematic diagram of the tape for use inside a display screen body provided by the embodiment of the present application.

[0014] The markings in the figure are: 1, aluminum alloy layer; 2, graphene coating; 3, black thermal conductive silicone gel layer; 4, matte textured release film; Detailed Embodiment

[0015] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings.

[0016] As Figure 1 shown, a tape for use inside a display screen body provided by the embodiment of the present application has a structure including an aluminum alloy layer 1, a graphene coating 2 coated on one side surface of the aluminum alloy layer 1, a black thermal conductive silicone gel layer 3 coated on the other side surface of the aluminum alloy layer 1, and a matte textured release film 4 single-sidedly attached to the side of the black thermal conductive silicone gel layer 3 away from the aluminum alloy layer 1.

[0017] For the tape of the present application, a graphene coating 2 is coated on one surface of the aluminum alloy by a coater using a coating process to form a heat-dissipating graphene coating 2. After the graphene coating 2 is cured, a black thermally conductive silicone gel film with thermally conductive and buffering properties is coated on the other surface of the aluminum alloy layer 1 to form a black thermally conductive silicone gel layer 3. Then, a matte textured release film 4 is attached to the black thermally conductive silicone gel layer 3 on one side.

[0018] The aluminum alloy layer 1 is made of 3-series aluminum alloy, with a thermal conductivity of 145 W / mk, an elastic modulus of 72 GPa, an X-Y direction resistance of 0.005 Ω / inch2, a Z-direction resistance of 0.005 Ω / inch2, a density of 2.7 g / cm3, and a shielding effectiveness of 95.086 - 108.105 dB, having a good electromagnetic shielding effect. The graphene has a thermal conductivity as high as 5,300 W / m·K, far higher than that of carbon nanotubes, graphite, and metals, and has a high heat-dissipating performance. The thermal radiation coefficient of the metal surface is generally low, so the role of the thermal radiation effect on the metal surface in the entire heat exchange process can be almost negligible. However, if a graphene thermal radiation coating is sprayed on the metal surface, it will bring a qualitative leap. Therefore, coating a layer of graphene coating on the aluminum alloy surface can achieve the synergistic effect of heat conduction and heat radiation, greatly improving the heat-dissipating efficiency and bringing a qualitative leap in heat-dissipating performance. The black thermally conductive silicone gel layer 3 uses a silicone-based buffer gel. The silicone-based buffer gel has a high molecular bond energy (Si-O-Si 106 Kcal / mol, C-C 84.9 cal / mol), high stability, a helical molecular spatial arrangement, and good anti-buffering performance. It is a glue formed by mixing liquid glue and thermally conductive powder and is coated on the aluminum alloy by a coater to form a sticky thermally conductive silicone gel layer. The matte textured release film 4 is a PET release film, which is a release film obtained by pressing 0.133 mm * 0.13 mm square grids on the surface of a plain release film. The matte textured release film 4 on the surface of the black thermally conductive silicone gel will form a grid on the surface of the black thermally conductive silicone gel. When contacting the adhered surface, the grid on the glue surface can enhance the exhaust performance and prevent the generation of bubbles. The role of the textured release film is to form a grid on the surface of the black thermally conductive silicone gel layer 3 and protect the glue surface. It will be torn off during later use, and the release surface of the grid film is matte-treated. After the black thermally conductive silicone gel layer 3 is attached to the matte textured release film 4, the glue surface of the black thermally conductive silicone gel layer 3 becomes matte, reducing the problem of light reflection when the glue is adhered to the screen body later.

[0019] In the above design, the use of the aluminum alloy layer 1 can achieve good electromagnetic shielding effect and weight reduction. Coating the graphene layer on the aluminum alloy layer 1 can utilize the good heat dissipation performance of the graphene layer to achieve the synergistic effect of thermal radiation and heat conduction, further improving the heat dissipation effect. By coating the black thermal conductive silicone gel layer 3 on the other side of the aluminum alloy layer 1, the black thermal conductive silicone gel layer 3 not only has heat conduction and heat dissipation functions, but also can form good earthquake resistance, buffering and absorption performance by the helical arrangement of silicone molecules. The matte texture release film 4 can make the adhesive surface of the black thermal conductive silicone gel layer 3 become matte, reducing the light reflection attached to the screen body.

[0020] Specifically: the thickness range of the aluminum alloy layer 1 is 0.03 mm to 0.3 mm.

[0021] In the above design, 3-series aluminum alloy is used for the aluminum alloy. When the thickness range of the 3-series aluminum alloy is 0.03 mm to 0.3 mm, the actual tensile strength data is 450 MPa, the Vickers hardness is 137 HV, the strength can completely replace the supporting performance of rolled hard copper, the thermal conductivity is 145 W / mk, the elastic modulus is 72 GPa, the X-Y direction resistance is 0.005 Ω / inch2, the Z-direction resistance is 0.005 Ω / inch2, the density is 2.7 g / cm3, and the shielding effectiveness is 95.086 - 108.105 dB. While ensuring the thinness of the product, it can not only provide good electromagnetic shielding performance and thermal conductivity, but also effectively save costs.

[0022] Specifically: the thickness range of the black thermal conductive silicone gel layer 3 is 0.05 mm to 0.3 mm.

[0023] In the above design, when the thickness range of the black thermal conductive silicone gel layer 3 is 0.05 mm to 0.3 mm, the falling ball impact force absorption rate is 47%, the buffering and absorption performance is equivalent to that of imported foam, the peel strength is greater than 1200 gf / 25 mm, and the elastic modulus is 0.18 MPa. The thermal conductivity is 0.4 W / mk, which can not only achieve good thermal conductivity, but also has good adhesion performance and buffering and earthquake resistance performance.

[0024] Specifically: the thickness range of the matte texture release film 4 is 0.03 mm to 0.2 mm.

[0025] In the above design, when the thickness range of the matte texture release film 4 is 0.03 mm to 0.2 mm, the release force is 10 - 40 gf, the residual adhesion is greater than 85%, and the glossiness of the release film is less than 3, which can ensure the adhesion force with the black thermal conductive silicone gel layer 3.

[0026] Specifically: the thickness range of the graphene coating 2 is 0.003 mm to 0.03 mm.

[0027] In the above design, the thermal conductivity of graphene is as high as 5300 W / m·K, and it can meet the requirements of product thinning and heat dissipation performance in the range of 0.003 mm to 0.03 mm.

[0028] For further detailed description, it should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. The tape used inside the display screen body, characterized in that: It includes an aluminum alloy layer (1), a graphene coating (2) coated on one side surface of the aluminum alloy layer (1), a black thermal conductive silicone gel layer (3) coated on the other side surface of the aluminum alloy layer (1), and a matte texture release film (4) single-sidedly attached to the side of the black thermal conductive silicone gel layer (3) away from the aluminum alloy layer (1).

2. The tape for use in a display screen body according to claim 1, wherein: The thickness range of the aluminum alloy layer (1) is 0.03 mm to 0.3 mm.

3. The tape for use in a display screen body according to claim 1, wherein: The thickness range of the black thermal conductive silicone gel layer (3) is 0.05 mm to 0.3 mm.

4. The tape for use in a display body according to claim 1, wherein: The thickness range of the matte texture release film (4) is 0.03 mm to 0.2 mm.

5. The tape for use in a display screen body according to claim 1, characterized in that: The thickness range of the graphene coating (2) is 0.003 mm to 0.03 mm.

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