Metal composite screen heat dissipation film for OLED screen

Abstract

The utility model discloses a metal composite screen heat dissipation film for an OLED screen. The metal composite screen heat dissipation film comprises an aluminum foil, a heat conduction graphite layer arranged on the upper end face of the aluminum foil in a coating mode, a curing adhesive layer arranged on the lower end face of the aluminum foil and a copper foil layer arranged on the lower end face of the curing adhesive layer. The utility model has the advantages that the aluminum foil is matched with the copper foil to realize support, and compared with the copper foil with the same thickness, the weight can be effectively reduced by 30-40%. By arranging the heat conduction graphite layer, heat conduction and heat dissipation can be effectively carried out.

Description

Technical Field

[0001] The utility model relates to the field of heat dissipation films, in particular to a metal composite screen heat dissipation film for an OLED screen. Background Art

[0002] OLED (Organic Light Emitting Diode) displays have attracted much attention for their bright colors, high contrast, and energy saving. However, behind this eye-catching technology, screen cooling film (SCF) technology plays a vital role in electrical connections. With the public's demand for lightweight electronic products, the screen cooling film (SCF) with a single copper foil structure cannot achieve weight reduction while maintaining its original performance, and the single aluminum foil structure cannot meet the required electrical conductivity, thermal conductivity, and support. Therefore, an upgrade is made to use a copper-aluminum film composite structure as the main body.

[0003] In view of this, it is necessary to provide a metal composite screen heat dissipation film for a new OLED screen. Summary of the invention

[0004] The utility model provides a metal composite screen heat dissipation film for a novel OLED screen, which effectively solves the problem of heavy weight of the existing screen heat dissipation film.

[0005] The technical solution adopted by the utility model is

[0006] A metal composite screen heat dissipation film for an OLED screen comprises an aluminum foil, a thermally conductive graphite layer coated and arranged on the upper end surface of the aluminum foil, a cured adhesive layer arranged on the lower end surface of the aluminum foil, and a copper foil arranged on the lower end surface of the cured adhesive layer.

[0007] Furthermore, the thickness of the copper foil is in the range of 0.005 mm to 0.020 mm.

[0008] Furthermore, the thickness of the aluminum foil is in the range of 0.005 mm to 0.020 mm.

[0009] Furthermore, the thickness of the cured adhesive layer is in the range of 0.002 mm to 0.004 mm.

[0010] Furthermore, the thickness of the thermally conductive graphite layer ranges from 0.015 mm to 0.025 mm.

[0011] Beneficial effects of the utility model: Aluminum foil and copper foil are used to achieve support, which can effectively reduce weight by 30% to 40% compared with copper foil of the same thickness. By providing a thermally conductive graphite layer, heat conduction and heat dissipation can be effectively performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1An overall schematic diagram of a metal composite screen heat dissipation film for an OLED screen provided in an embodiment of the present application.

[0013] The markings in the figure are: 1. copper foil; 2. aluminum foil; 3. cured adhesive layer; 4. thermal conductive graphite layer; DETAILED DESCRIPTION

[0014] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0015] A metal composite screen heat dissipation film for an OLED screen comprises an aluminum foil 2, a thermally conductive graphite layer 4 coated and arranged on the upper end surface of the aluminum foil 2, a cured adhesive layer 3 arranged on the lower end surface of the aluminum foil 2, and a copper foil layer 1 arranged on the lower end surface of the cured adhesive layer 3.

[0016] In the actual manufacturing process, the temperature of the cured adhesive layer 3 can be set at 80-110°C and the speed is 10-30M / min when the coating oven is dried. It is also necessary to perform hot pressing at 120-150°C and a pressure of 2.0kN-3.0kN, and place it at room temperature for 48 hours after pressing; the curing adhesive is an epoxy resin system resin, with a compound curing agent such as polyamide and bisphenol amine. The temperature of the end surface of the aluminum foil 2 can be set at 90-180°C and the speed is 10-30M / min when the coating oven is dried, and the curing temperature is 24 hours. The bonding force of the metal composite screen heat dissipation film prepared in this application for the new OLED screen is greater than 1500gf / 25mm at room temperature, and the yield strength in the mechanical direction is greater than 200MPa, which is better than the aluminum foil 2 of the same thickness. The tensile strength in the mechanical direction is greater than 250MPa, which is better than the aluminum foil 2 of the same thickness. The elastic modulus in the mechanical direction is greater than 50000Pa, which is better than the aluminum foil 2 of the same thickness. Environmental testing can meet the requirements of more than 85480h without any abnormality on the surface.

[0017] The aluminum foil 2, the copper foil 1, the thermally conductive graphite layer 4 and the cured adhesive layer 3 cooperate with each other to achieve support, thermal conductivity and electrical conduction. The thermally conductive graphite layer 4 not only achieves electrical conduction but also mainly plays a role in heat dissipation.

[0018] In the above design, the aluminum foil 2 cooperates with the copper foil 1 to achieve support, which can effectively reduce the weight by 30% to 40% compared with the copper foil 1 of the same thickness. The heat-conducting graphite layer 4 can be provided to effectively conduct heat and dissipate heat.

[0019] Specifically, the thickness of the copper foil 1 is in the range of 0.005 mm to 0.020 mm.

[0020] In the above design, the thickness of the copper foil 1 can meet the requirement of thinning the product and can achieve the functions of support, heat conduction and electricity conduction.

[0021] Specifically, the thickness of the aluminum foil 2 is in the range of 0.005 mm to 0.020 mm.

[0022] In the above design, the thickness of the aluminum foil 2 can meet the requirement of thinning the product, and can cooperate to achieve the functions of support, heat conduction and electricity conduction, thereby reducing the overall weight.

[0023] Specifically, the thickness of the cured adhesive layer 3 is in the range of 0.002 mm to 0.004 mm.

[0024] In the above design, the design of the curing adhesive layer 3 can effectively fix the copper foil layer 1 and the aluminum foil layer 2.

[0025] Specifically, the thickness of the thermally conductive graphite layer 4 is in the range of 0.015 mm to 0.025 mm.

[0026] In the above design, the thickness design of the thermally conductive graphite layer 4 can achieve good thermal and electrical conductivity.

[0027] To further explain in detail, it should be understood that the above is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal composite screen heat dissipation film for an OLED screen, characterized in that: It comprises an aluminum foil (2), a heat-conducting graphite layer (4) coated and arranged on the upper end surface of the aluminum foil (2), a cured adhesive layer (3) arranged on the lower end surface of the aluminum foil (2), and a copper foil (1) arranged on the lower end surface of the cured adhesive layer (3).

2. The metal composite screen heat dissipation film for OLED screen according to claim 1, characterized in that: The thickness of the copper foil (1) ranges from 0.005 mm to 0.020 mm.

3. The metal composite screen heat dissipation film for OLED screen according to claim 1, characterized in that: The thickness of the aluminum foil (2) ranges from 0.005 mm to 0.020 mm.

4. The metal composite screen heat dissipation film for OLED screen according to claim 1, characterized in that: The thickness of the cured adhesive layer (3) is in the range of 0.002 mm to 0.004 mm.

5. The metal composite screen heat dissipation film for OLED screen according to claim 1, characterized in that: The thickness of the thermally conductive graphite layer (4) ranges from 0.015 mm to 0.025 mm.

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