Heat dissipation display module and mobile terminal

Abstract

The utility model discloses a heat dissipation display module which comprises a display screen module which comprises a screen assembly and a metal back plate, and the screen assembly is arranged on one side of the metal back plate; the heat conduction layer is arranged on one side, back to the screen assembly, of the metal back plate; and the heat radiation layer is arranged on one side, back to the metal back plate, of the heat conduction layer. The heat dissipation display module has heat dissipation effects of heat conduction and heat radiation. The utility model discloses a mobile terminal which comprises the heat dissipation display module.

Description

Technical Field

[0001] The utility model relates to display technology, in particular to a heat dissipation display module and a mobile terminal. Background Art

[0002] A display module mainly consists of a cover plate, a polarizer, a liquid crystal display, a backlight, etc. When the liquid crystal display and the backlight are working, a large amount of heat will be generated. The commonly used treatment method at present is to attach a graphite sheet on the iron frame of the backlight, which is the back of the display module. Through the contact between the graphite sheet and the heat dissipation components on the whole machine case, and by using the heat conduction effect of graphite, the heat generated by the display module is conducted to the whole machine, and the heat is absorbed or dissipated through the heat dissipation components of the whole machine case.

[0003] However, in the overall machine design, due to the differences in the overall machine design, there are a large number of components, and the design structures of each component are complex. Due to reasons such as tolerances and errors, there are sometimes situations where the graphite sheet on the back of the display module cannot directly contact the heat dissipation components on the whole machine case. And the conventional graphite sheet mainly conducts the heat of the display module through heat conduction. If the graphite sheet cannot directly contact the heat dissipation components on the whole machine case, the heat of the display module cannot be effectively conducted out. Summary of the Utility Model

[0004] In order to solve the above deficiencies of the prior art, the utility model provides a heat dissipation display module with heat dissipation effects of both heat conduction and heat radiation.

[0005] A mobile terminal includes the above heat dissipation display module.

[0006] The technical problems to be solved by the utility model are realized through the following technical solutions:

[0007] A heat dissipation display module includes:

[0008] A display screen module, including a screen component and a metal backplane, and the screen component is arranged on one side of the metal backplane;

[0009] A heat conduction layer is arranged on the side of the metal backplane facing away from the screen component;

[0010] A heat radiation layer is arranged on the side of the heat conduction layer facing away from the metal backplane.

[0011] Further, the heat conduction layer is a graphite sheet, a copper foil, an aluminum plate or a heat pipe.

[0012] Further, the thickness of the heat conduction layer is between 0.5 mm and 2.0 mm.

[0013] Further, the heat radiation layer is a nano-carbon coating, an alumina coating, a chromium oxide coating, a silicon carbide coating or a porous ceramic coating.

[0014] Further, the thickness of the heat radiation layer is between 10 nm and 50 nm.

[0015] Further, the heat dissipation display module further includes a double-sided adhesive layer, and the double-sided adhesive layer is attached between the metal backplane and the heat conduction layer.

[0016] Further, the double-sided adhesive layer is thermally conductive silicone.

[0017] Further, the metal backplane is an iron frame, a stainless steel frame or an aluminum alloy frame.

[0018] A mobile terminal includes a whole machine case and the above heat dissipation display module. The heat dissipation display module is disposed in the whole machine case, and the heat radiation layer is in contact with the whole machine case.

[0019] Further, a heat dissipation component is disposed in the whole machine case, and the heat dissipation component is in contact with the heat radiation layer.

[0020] The present utility model has the following beneficial effects: The heat dissipation display module of the present utility model sequentially arranges the heat conduction layer and the heat radiation layer on the metal backplane of the display screen module, and uses the cooperation of the heat conduction layer and the heat radiation layer to simultaneously achieve the conduction heat dissipation and radiation heat dissipation of the display screen module. During the assembly of the whole machine, the whole machine case of the mobile terminal is directly in contact with the heat radiation layer, so that the heat generated by the screen assembly can be conducted to the whole machine case through the metal backplane, the heat conduction layer and the heat radiation layer in sequence for heat dissipation. Even if the whole machine case has large tolerances and errors due to reasons such as the difference in the overall design of the whole machine and cannot be directly in contact with the heat radiation layer, the heat radiation layer can also effectively radiate the heat into the gap between it and the whole machine case through heat radiation, and then use the whole machine heat dissipation system such as a fan of the mobile terminal for heat dissipation. Description of the Drawings

[0021] Figure 1 It is a stacked structure diagram of the heat dissipation display module provided by the present utility model.

[0022] Figure 2 It is a stacked structure diagram of the display screen module in the heat dissipation display module provided by the present utility model.

[0023] Figure 3 It is a stacked structure diagram of the mobile terminal provided by the present utility model. Detailed Embodiments

[0024] The present utility model will be described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0026] In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0027] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", "set", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may also be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Embodiment 1

[0029] As Figure 1 shown, a heat dissipation display module includes:

[0030] A display screen module 100, including a screen assembly 110 and a metal backplane 120, and the screen assembly 110 is disposed on one side of the metal backplane 120;

[0031] A heat conduction layer 300 is disposed on the side of the metal backplane 120 facing away from the screen assembly 110;

[0032] The heat radiation layer 400 is disposed on the side of the heat conduction layer 300 facing away from the metal backplane 120.

[0033] In the heat dissipation display module of the present utility model, the heat conduction layer 300 and the heat radiation layer 400 are sequentially disposed on the metal backplane 120 of the display module 100. By the cooperation of the heat conduction layer 300 and the heat radiation layer 400, the conduction heat dissipation and the radiation heat dissipation of the display module 100 are simultaneously realized. During the assembly of the whole machine, the whole machine case of the mobile terminal is in direct contact with the heat radiation layer 400. In this way, the heat generated by the screen assembly 110 can be conducted to the whole machine case for heat dissipation through the metal backplane 120, the heat conduction layer 300, and the heat radiation layer 400 in sequence. Even if the whole machine case has large tolerances and errors due to reasons such as the overall design differences of the whole machine and cannot be in direct contact with the heat radiation layer 400, the heat radiation layer 400 can also effectively radiate the heat into the gap between it and the whole machine case by means of heat radiation, and then use the whole machine heat dissipation system such as a fan of the mobile terminal for heat dissipation.

[0034] The heat conduction layer 300 can be, but is not limited to, a graphite sheet, a copper foil, an aluminum plate, or a heat pipe. The thickness of the heat conduction layer 300 is between 0.5 mm and 2.0 mm. The heat radiation layer 400 can be, but is not limited to, a nano-carbon coating, an alumina coating, a chromium oxide coating, a silicon carbide coating, or a porous ceramic coating. The thickness of the heat radiation layer 400 is between 10 nm and 50 nm.

[0035] Preferably, the heat conduction layer 300 is a graphite sheet, and the heat radiation layer 400 is a nano-carbon coating.

[0036] The graphite sheet is a material with high thermal conductivity and is widely used in the heat dissipation field of electronic devices. It has a unique grain orientation, can conduct heat uniformly in two directions, and its sheet-like structure can well adapt to different surfaces, effectively shielding heat sources and components, and improving the performance of consumer electronic products. The thermal conductivity of the graphite sheet can reach 150 - 1500 W / m-K. The ultra-high thermal conductivity within this range makes it an outstanding material choice for heat management solutions. The chemical composition of the graphite sheet is mainly a single carbon element, which has electrical and thermal conductivity, and also has good process properties such as plasticity, chemical stability, and lubricity. These characteristics enable the graphite sheet to be widely used in fields such as electronics, communications, lighting, aviation, and national defense. Another advantage of the graphite sheet is that it is thin, light, and flexible, with a specific gravity of only 1.0 - 1.3 and a thickness that can be as thin as 0.012 mm, making it easy to process and fit on various-shaped electronic devices.

[0037] The nano-carbon coating not only has an extremely high thermal conductivity but also has excellent thermal radiation ability. Its heat dissipation power is usually between 1000 and 6000, which is much higher than that of natural graphite (about 400) and synthetic graphite (about 1500). Due to its high thermal conductivity and good thermal radiation performance, the nano-carbon coating can not only cooperate with the graphite sheet to quickly transfer the heat generated by the screen assembly 110 to the whole machine housing for heat dissipation, but also, when it cannot be in direct contact with the whole machine housing due to assembly tolerance, it can still utilize its excellent thermal radiation ability to radiate the heat generated by the screen assembly 110 into the gap between it and the whole machine housing, and then use the whole machine heat dissipation system such as a fan in the mobile terminal for heat dissipation.

[0038] The heat dissipation display module further includes a double-sided adhesive layer 200, and the double-sided adhesive layer 200 is bonded between the metal backplane 120 and the heat conduction layer 300.

[0039] Preferably, the double-sided adhesive layer 200 can be but is not limited to thermally conductive silica gel.

[0040] The thermally conductive silica gel is a kind of silica gel mainly composed of organic silica gel, and is kneaded with high molecular materials such as fillers and thermally conductive materials. It has excellent thermal conductivity and can quickly conduct heat from the heat source to other positions to improve the heat dissipation efficiency. Its thermal conductivity is usually between 0.85 and 2.5 W / (m·K). At the same time, the thermally conductive silica gel has good electrical insulation performance, which can ensure the electrical safety of electronic devices during use, and can maintain stable performance within a wide temperature range. It can usually work at a temperature of -60°C to 280°C (up to 400°C in the short term) and is suitable for various extreme environments. The thermally conductive silica gel has excellent anti-aging performance and can maintain the stability of its physical and chemical properties for a long time.

[0041] In this embodiment, as Figure 2 shown, the screen assembly 110 includes a liquid crystal screen 111 and a backlight assembly 112. The metal backplane 120 includes a bottom plate 121 and side plates 122 provided on four sides of the bottom plate 121. An assembly space for accommodating and assembling the backlight assembly 112 is jointly enclosed between the bottom plate 121 and the side plates 122 on four sides; the side plates 122 on four sides are folded inward to form a support platform 123 surrounding the upper part of the backlight assembly 112, and the liquid crystal screen 111 is adhesively fixed on the support platform 123.

[0042] The backlight assembly 112 includes an LED light bar 112a, a light guide plate 112b, and an optical film group 112c. The LED light bar 112a is disposed on the light-incident side surface of the light guide plate 112b, and the optical module is disposed on the light-emitting side top surface of the light guide plate 112b. The optical film group 112c mainly includes a brightness enhancement film and a diffusion film stacked on each other, etc.

[0043] The liquid crystal screen 111 includes a lower polarizer 111a, a lower substrate 111b, an upper substrate 111c, and an upper polarizer 111d stacked in sequence from bottom to top. Among them, one side of the lower substrate 111b extends outside the upper substrate 111c and is bonded with a driving IC 111e.

[0044] In this embodiment, the LED light bar 112a and the driving IC 111e are the main heat sources. Therefore, the positions of the heat conduction layer 300 and the heat radiation layer 400 on the bottom plate 121 of the metal backplane 120 are as close as possible to the LED light bar 112a and the driving IC 111e.

[0045] The metal backplane 120 can be, but is not limited to, an iron frame, a stainless steel frame, or an aluminum alloy frame.

[0046] Embodiment 2

[0047] As Figure 3 shown, a mobile terminal includes a whole machine case 1 and the heat dissipation display module 2 described in Embodiment 1. The heat dissipation display module 2 is disposed in the whole machine case 1, and the heat radiation layer 400 is in contact with the whole machine case 1.

[0048] In a specific implementation manner, the whole machine case 1 is a metal case with good heat dissipation performance, so that the heat dissipation display module 2 directly dissipates heat through the whole machine case 1.

[0049] In another specific embodiment, the whole machine case 1 is a plastic case or a glass case with poor heat dissipation performance. Preferably, heat dissipation components such as copper tubes (not shown in the figure) are provided in the whole machine case 1, and the heat dissipation components are in contact with the heat radiation layer 400.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention and are not intended to limit them. Although the embodiments of the present invention have been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the embodiments of the present invention can still be modified or equivalently replaced, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat dissipation display module, characterized in that: include: A display screen module, comprising a screen assembly and a metal back plate, wherein the screen assembly is arranged on one side of the metal back plate; A heat conduction layer is disposed on a side of the metal back plate facing away from the screen assembly; The heat radiation layer is arranged on the side of the heat conduction layer facing away from the metal back plate.

2. The heat dissipation display module according to claim 1, characterized in that: The heat conducting layer is a graphite sheet, a copper foil, an aluminum plate or a heat dissipating plate.

3. The heat dissipation display module according to claim 1 or 2, characterized in that: The thickness of the heat conduction layer is between 0.5 mm and 2.0 mm.

4. The heat dissipation display module according to claim 1, characterized in that: The heat radiation layer is a nano-carbon coating, an aluminum oxide coating, a chromium oxide coating, a silicon carbide coating or a porous ceramic coating.

5. The heat dissipation display module according to claim 1 or 2, characterized in that: The thickness of the heat radiation layer is between 10nm and 50nm.

6. The heat dissipation display module according to claim 1, characterized in that: The heat dissipation display module further comprises a double-sided adhesive layer, and the double-sided adhesive layer is adhered between the metal back plate and the heat conduction layer.

7. The heat dissipation display module according to claim 6, characterized in that: The double-sided adhesive layer is thermally conductive silica gel.

8. The heat dissipation display module according to claim 1, characterized in that: The metal back plate is an iron frame, a stainless steel frame or an aluminum alloy frame.

9. A mobile terminal, characterized in that: It comprises a whole machine casing and the heat dissipation display module according to claim 1, wherein the heat dissipation display module is arranged in the whole machine casing, and the heat radiation layer is in contact with the whole machine casing.

10. The mobile terminal according to claim 9, characterized in that: A heat dissipation component is arranged in the whole machine casing, and the heat dissipation component is in contact with the heat radiation layer.

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