Composite board, optical module and display equipment
By providing protrusions on the second metal plate of the composite plate and contacting the first metal plate, the problem of poor heat dissipation effect of the composite plate is solved, and rapid transfer of heat and effective cooling in the composite plate are achieved.
Patent Information
- Application Number
- CN202420367646.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-02-27
AI Technical Summary
The existing composite panels have poor heat dissipation effect and are difficult to effectively reduce the temperature.
A composite plate is designed, by providing a projection on the second metal plate and contacting the first metal plate through the through holes on the plastic interlayer, the high thermal conductivity of the metal plate is used to accelerate heat transfer, so that heat can be quickly transferred from one side of the composite plate to the other side.
The good heat dissipation effect of the composite panel is achieved, significantly reducing the temperature of the optical module and display equipment.
Smart Images
Figure CN222590913U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of composite panels, and in particular to a composite panel, an optical module and a display device. Background Art
[0002] Composite panels usually use metal plates and plastic plates to form a sandwich structure. The metal plates can not only withstand heavy loads and have very high rigidity and strength, but also have a fire resistance level that can reach flame retardant or non-combustible levels. At the same time, the middle layer uses lightweight plastic materials, which can effectively reduce the overall specific gravity of the composite panel for easy transportation and construction.
[0003] However, the existing composite panels have the problem of poor heat dissipation effect. Utility Model Content
[0004] Based on this, the embodiments of the present application provide a composite board, an optical module and a display device.
[0005] In a first aspect, an embodiment of the present application provides a composite plate, comprising a first metal plate and a second metal plate arranged opposite to each other, and a plastic interlayer arranged between the first metal plate and the second metal plate;
[0006] A protrusion is provided on a surface of the second metal plate on one side facing the first metal plate, a first through hole corresponding to the protrusion is provided on the plastic interlayer, and the protrusion passes through the first through hole and contacts the first metal plate.
[0007] In some embodiments, the second metal plate includes a plate body and a protrusion connected to the plate body, a hollow structure is provided inside the plate body, and a coolant is provided inside the hollow structure.
[0008] In some embodiments, the protrusion is cylindrical; and / or
[0009] The hollow structures and the projections of the protrusions on the first metal plate are arranged alternately at intervals.
[0010] In some embodiments, the hollow structure is columnar, and an extension direction of the hollow structure is parallel to a surface of the first metal plate facing the second metal plate.
[0011] In some embodiments, the hollow structure is cylindrical, and the diameter of the cross section of the hollow structure is 0.9 mm to 1.5 mm.
[0012] In some embodiments, the composite board further includes a first double-sided adhesive tape and a second double-sided adhesive tape;
[0013] The first double-sided adhesive tape is disposed between the first metal plate and the plastic interlayer, and the first double-sided adhesive tape is provided with a second through hole corresponding to the first through hole;
[0014] The second double-sided adhesive tape is disposed between the second metal plate and the plastic interlayer, and a third through hole corresponding to the first through hole is disposed on the second double-sided adhesive tape.
[0015] In some embodiments, the thermal conductivity of the first double-sided adhesive tape and the thermal conductivity of the second double-sided adhesive tape are each 2W / (m·K) to 3W / (m·K); and / or
[0016] The thermal conductivity of the plastic interlayer is 2.5W / (m·K) to 5W / (m·K).
[0017] In some embodiments, the thickness of the first metal plate is 0.2 mm to 0.7 mm; and / or
[0018] The thickness of the first double-sided adhesive tape is 0.05 mm to 0.15 mm; and / or
[0019] The thickness of the plastic interlayer is 0.2 mm to 0.7 mm; and / or
[0020] The thickness of the second double-sided adhesive tape is 0.05 mm to 0.15 mm; and / or
[0021] The thickness of the second metal plate is 1.5 mm to 2.1 mm.
[0022] An embodiment of the present application further provides an optical module, including a light source and a composite plate connected to the light source, wherein the composite plate is the composite plate described above.
[0023] An embodiment of the present application also provides a display device, comprising the optical module as described above.
[0024] The composite plate provided in the embodiment of the present application is provided with a protrusion on the surface of one side of the second metal plate facing the first metal plate, and the protrusion is provided to pass through the first through hole on the plastic interlayer to contact the first metal plate. Since the heat dissipation performance of the first metal plate and the second metal plate are both greater than the heat dissipation performance of the plastic interlayer, and the first metal plate and the second metal plate are respectively located on both sides of the composite plate, when the first metal plate or the second metal plate contacts the heat source, the heat generated by the heat source can be transferred to the second metal plate via the first metal plate, or transferred to the first metal plate via the second metal plate, thereby accelerating the transfer of heat in the composite plate, so that the heat can be quickly transferred from one side of the composite plate to the other side, so that the composite plate has a better heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments.
[0026] Figure 1 A schematic diagram of the first structure of the composite plate provided in an embodiment of the present application.
[0027] Figure 2 A second structural schematic diagram of the composite plate provided in an embodiment of the present application.
[0028] Figure 3 A schematic diagram of the structure of an optical module provided in an embodiment of the present application.
[0029] Component Symbols:
[0030] 110-composite plate; 10-first metal plate; 30-plastic interlayer; 31-first through hole; 20-second metal plate; 21-plate body; 22-protrusion; 215-hollow structure; 40-first double-sided tape; 41-second through hole; 50-second double-sided tape; 51-third through hole; 100-optical module; 120-light source. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.
[0032] See also Figure 1 and Figure 2 An embodiment of the present application provides a composite plate 110 , including a first metal plate 10 and a second metal plate 20 that are arranged opposite to each other, and a plastic interlayer 30 arranged between the first metal plate 10 and the second metal plate 20 .
[0033] A protrusion 22 is provided on a surface of the second metal plate 20 facing the first metal plate 10 , and a first through hole 31 corresponding to the protrusion 22 is provided on the plastic interlayer 30 . The protrusion 22 passes through the first through hole 31 and contacts the first metal plate 10 .
[0034] Exemplarily, a plurality of protrusions 22 arranged at intervals may be provided on the second metal plate 20. In the embodiment of the present application, a plurality refers to two or more, such as three, four, five, six, seven, eight, etc.
[0035] The composite plate 110 provided in the embodiment of the present application is provided with a protrusion 22 on the surface of the second metal plate 20 on one side facing the first metal plate 10, and the protrusion 22 is provided to pass through the first through hole 31 on the plastic interlayer 30 to contact the first metal plate 10. Since the heat dissipation performance of the first metal plate 10 and the second metal plate 20 are both greater than the heat dissipation performance of the plastic interlayer 30, and the first metal plate 10 and the second metal plate 20 are respectively located on both sides of the composite plate 110, when the first metal plate 10 or the second metal plate 20 contacts the heat source, the heat generated by the heat source can be transferred to the second metal plate 20 via the first metal plate 10, or transferred to the first metal plate 10 via the second metal plate 20, thereby accelerating the transfer of heat in the composite plate 110, so that the heat can be quickly transferred from one side of the composite plate 110 to the other side, so that the composite plate 110 has a better heat dissipation effect.
[0036] See also Figure 1 and Figure 2 The second metal plate 20 includes a plate body 21 and a protrusion 22 connected to the plate body 21 . A hollow structure 215 is provided inside the plate body 21 . A coolant is provided inside the hollow structure 215 .
[0037] Exemplarily, a plurality of hollow structures 215 arranged at intervals may be provided inside the plate body 21 , wherein a plurality refers to two or more, such as three, four, five, six, seven, eight, and the like.
[0038] Exemplarily, the coolant can be ethanol, which has good thermal conductivity. When liquid ethanol is heated, part of the liquid ethanol absorbs heat and is converted into ethanol vapor. The ethanol vapor is in full contact with the inner surface of the hollow structure 215, thereby expanding the contact area between the ethanol and the inner surface of the hollow structure 215, thereby accelerating the heat conduction speed.
[0039] It is understandable that by providing a coolant inside the hollow structure 215 of the second metal plate 20 , the heat conduction speed in the composite plate 110 can be further accelerated, thereby improving the heat dissipation effect of the composite plate 110 .
[0040] See also Figure 1 and Figure 2 , the protrusion 22 is cylindrical. It can be understood that, at this time, the first through hole 31 on the plastic interlayer 30 is a circular hole.
[0041] See also Figure 1 and Figure 2 The projections of the hollow structures 215 and the protrusions 22 on the first metal plate 10 are arranged alternately at intervals.
[0042] See also Figure 1 and Figure 2The hollow structure 215 is columnar, and an extending direction of the hollow structure 215 is parallel to a side surface of the first metal plate 10 facing the second metal plate 20 .
[0043] It can be understood that when the extension direction of the hollow structure 215 is parallel to the side surface of the first metal plate 10 facing the second metal plate 20, it means that the side of the hollow structure 215 is set toward the first metal plate 10. Since the area of the side of the hollow structure 215 is larger, and at this time the side of the hollow structure 215 is the contact surface between the coolant and the plate body 21 of the second metal plate 20, the contact surface between the coolant and the plate body 21 of the second metal plate 20 can be increased, so that heat can be quickly transferred between the coolant and the second metal plate 20, thereby accelerating the heat conduction speed in the composite plate 110 and improving the heat dissipation effect of the composite plate 110.
[0044] See also Figure 1 and Figure 2 The hollow structure 215 is cylindrical, and the diameter of the cross section of the hollow structure 215 is 0.9 mm to 1.5 mm, for example, 0.9 mm, 1 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, etc.
[0045] See also Figure 1 and Figure 2 The composite board 110 further includes a first double-sided adhesive tape 40 and a second double-sided adhesive tape 50 .
[0046] The first double-sided adhesive tape 40 is disposed between the first metal plate 10 and the plastic interlayer 30 . The first double-sided adhesive tape 40 is provided with a second through hole 41 corresponding to the first through hole 31 .
[0047] The second double-sided adhesive tape 50 is disposed between the second metal plate 20 and the plastic interlayer 30 . The second double-sided adhesive tape 50 is provided with a third through hole 51 corresponding to the first through hole 31 .
[0048] Exemplarily, the thermal conductivity of the first double-sided tape 40 and the thermal conductivity of the second double-sided tape 50 are respectively 2W / (m·K) to 3W / (m·K), for example, 2.2W / (m·K), 2.5W / (m·K), 2.7W / (m·K), 3W / (m·K), etc.
[0049] It can be understood that since the first double-sided tape 40 and the second double-sided tape 50 have a higher thermal conductivity coefficient, that is, the first double-sided tape 40 and the second double-sided tape 50 have better thermal conductivity, they can accelerate the heat transfer between the plastic interlayer 30 and the first metal plate 10 and the second metal plate 20, thereby improving the heat dissipation performance of the composite plate 110.
[0050] Exemplarily, the thermal conductivity of the plastic interlayer 30 is 2.5W / (m·K) to 5W / (m·K), for example, 2.5W / (m·K), 3W / (m·K), 3.5W / (m·K), 4W / (m·K), 4.5W / (m·K), 5W / (m·K), etc.
[0051] Exemplarily, the thickness of the first metal plate 10 is 0.2 mm to 0.7 mm, for example, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, etc.
[0052] It is understandable that when the plastic interlayer 30 has a higher thermal conductivity, it means that the plastic interlayer 30 has better thermal conductivity, thereby accelerating the heat transfer between the plastic interlayer 30 and the first metal plate 10 and the second metal plate 20, thereby improving the heat dissipation performance of the composite plate 110.
[0053] Exemplarily, the thickness of the first double-sided tape 40 is 0.05 mm to 0.15 mm, such as 0.05 mm, 0.08 mm, 0.1 mm, 0.12 mm, 0.15 mm, etc.
[0054] Exemplarily, the thickness of the plastic interlayer 30 is 0.2 mm to 0.7 mm, such as 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, etc.
[0055] Exemplarily, the thickness of the second double-sided tape 50 is 0.05 mm to 0.15 mm, such as 0.05 mm, 0.08 mm, 0.1 mm, 0.12 mm, 0.15 mm, etc.
[0056] Exemplarily, the thickness of the plate body 21 of the second metal plate 20 is 1.5 mm to 2.1 mm, for example, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 2.1 mm, etc.
[0057] It can be understood that the thickness of the protrusion 22 of the second metal plate 20 is equal to the sum of the thicknesses of the first double-sided adhesive tape 40 , the plastic interlayer 30 and the second double-sided adhesive tape 50 .
[0058] In some embodiments, the thickness of the first metal plate 10 and the plastic interlayer 30 are both 0.5 mm, the thickness of the first double-sided tape 40 and the second double-sided tape 50 are both 0.1 mm, and the thickness of the plate body 21 of the second metal plate 20 is 1.8 mm.
[0059] In some embodiments, the first metal plate 10 may be an ordinary steel plate, and the second metal plate 20 may be a nickel-plated steel plate. The heat dissipation performance of the nickel-plated steel plate is better than that of the ordinary steel plate that is not nickel-plated. When the side of the second metal plate 20 facing away from the first metal plate 10 is used to directly contact a heat source (such as a light source), heat can be quickly transferred from the heat source to the second metal plate 20, thereby improving the heat dissipation speed of the composite plate 110.
[0060] It can be understood that when the first metal plate 10 and the second metal plate 20 are both steel plates, the composite plate 110 is a steel-plastic plate.
[0061] See also Figure 3 The embodiment of the present application further provides an optical module 100, including a light source 120 and a composite plate 110 connected to the light source 120, wherein the composite plate 110 is the composite plate 110 in any of the above embodiments.
[0062] For example, the optical module 100 may be a backlight module used in a liquid crystal display, such as Figure 3 As shown, the backlight module may be a direct-lit backlight module. In other embodiments, the backlight module may also be an edge-lit backlight module.
[0063] The inventor of the present application has found through experimental tests that Figure 3 In the direct-type backlight module shown, when the back panel below the light source 120 is the composite panel 110 provided in the embodiment of the present application, the temperature inside the back panel can be reduced by more than 10% compared with when the back panel below the light source 120 is a traditional steel-plastic panel. In other words, the composite panel 110 provided in the embodiment of the present application can significantly reduce the temperature of the optical module 100, and thereby reduce the temperature of the display device including the optical module 100.
[0064] See also Figure 3 When the second metal plate 20 in the composite plate 110 includes a plate body 21 and a protrusion 22 connected to the plate body 21, a hollow structure 215 is provided inside the plate body 21, and a coolant is provided inside the hollow structure 215, the side of the plate body 21 away from the protrusion 22 is arranged close to the light source 120, so that the heat generated by the light source 120 can be quickly transferred to the coolant, and the coolant can be used to quickly conduct the heat to the first metal plate 10.
[0065] An embodiment of the present application further provides a display device, comprising the optical module 100 in any of the above embodiments.
[0066] Exemplarily, the electronic device may be a terminal such as a television, a mobile phone, or a tablet computer, and may also be a gaming device, an augmented reality (AR) device, a virtual reality (VR) device, a data storage device, an audio playback device, a video playback device, a wearable device, or other device with a display screen, wherein the wearable device may be a smart bracelet, smart glasses, a smart watch, smart decoration, etc.
[0067] The composite board, optical module and display device provided in the embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the present application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.
Claims
1. A composite board, characterized in that: It comprises a first metal plate and a second metal plate which are arranged opposite to each other and a plastic interlayer arranged between the first metal plate and the second metal plate; A protrusion is provided on a surface of the second metal plate on one side facing the first metal plate, a first through hole corresponding to the protrusion is provided on the plastic interlayer, and the protrusion passes through the first through hole and contacts the first metal plate.
2. The composite panel according to claim 1, characterized in that: The second metal plate includes a plate body and a protrusion connected to the plate body. A hollow structure is provided inside the plate body, and a coolant is provided inside the hollow structure.
3. The composite panel according to claim 2, characterized in that: The protrusion is cylindrical; and / or The hollow structures and the projections of the protrusions on the first metal plate are arranged alternately at intervals.
4. The composite panel according to claim 2, characterized in that: The hollow structure is columnar, and an extending direction of the hollow structure is parallel to a surface of the first metal plate facing the second metal plate.
5. The composite panel according to claim 4, characterized in that: The hollow structure is cylindrical, and the diameter of the cross section of the hollow structure is 0.9 mm to 1.5 mm.
6. The composite panel according to claim 1, characterized in that: The composite board also includes a first double-sided adhesive tape and a second double-sided adhesive tape; The first double-sided adhesive tape is disposed between the first metal plate and the plastic interlayer, and the first double-sided adhesive tape is provided with a second through hole corresponding to the first through hole; The second double-sided adhesive tape is disposed between the second metal plate and the plastic interlayer, and a third through hole corresponding to the first through hole is disposed on the second double-sided adhesive tape.
7. The composite panel according to claim 6, characterized in that: The thermal conductivity of the first double-sided adhesive tape and the thermal conductivity of the second double-sided adhesive tape are each 2W / (m·K) to 3W / (m·K); and / or The thermal conductivity of the plastic interlayer is 2.5W / (m·K) to 5W / (m·K).
8. The composite panel according to claim 6, characterized in that: The thickness of the first metal plate is 0.2 mm to 0.7 mm; and / or The thickness of the first double-sided adhesive tape is 0.05 mm to 0.15 mm; and / or The thickness of the plastic interlayer is 0.2 mm to 0.7 mm; and / or The thickness of the second double-sided adhesive tape is 0.05 mm to 0.15 mm; and / or The thickness of the second metal plate is 1.5 mm to 2.1 mm.
9. An optical module, characterized in that: It comprises a light source and a composite plate connected to the light source, wherein the composite plate is the composite plate as claimed in claim 1.
10. A display device, characterized in that: Comprising the optical module as claimed in claim 9.