Liquid crystal display screen with heat insulation function

Abstract

The utility model discloses a liquid crystal display screen with a heat insulation function, which comprises a lower frame, the lower frame comprises a bottom plate and a side wall extending upwards from the edge of the bottom plate, and a reflector plate, a light guide plate, an optical film group, a middle frame, a lower polaroid, a lower substrate, an upper substrate and an upper polaroid are sequentially stacked on the upper surface of the bottom plate from bottom to top. The lower substrate is longer than the upper substrate and extends outwards to form a step, a driving IC is arranged on the upper surface of the lower substrate located at the step, an LED lamp is fixed to the side wall and located below the driving IC, and a heat insulation layer is arranged on the upper surface of the middle frame located between the driving IC and the LED lamp. The heat insulation layer can isolate heat emitted between the driving IC and the LED lamp, so that the heat of the LED lamp and the heat of the driving IC are transmitted at the backlight module and the display module respectively, the heat emitted by the LED lamp and the heat emitted by the driving IC are not overlapped, and the temperature rise of a single area is prevented from exceeding the standard.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically, to a liquid crystal display screen with heat insulation function. Background Art

[0002] In-vehicle modules are required to have high brightness. As the LCD PPI gets larger and larger, the backlight brightness also increases accordingly. The backlight source is a major heat source of the module; the LCD's own driving IC is another major heat source. Especially for INCELL products, the display and touch ICs are integrated in one IC, resulting in higher power consumption and more serious heat generation. The combined heat of the backlight source and the driving IC brings a problem that the temperature rise of a single area of the module exceeds the standard, thereby causing the function of the liquid crystal display screen to decline or completely fail, reducing the competitiveness of the product. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is how to avoid the superposition of the heat of the backlight source and the driving IC, avoid the temperature rise of a single area exceeding the standard, ensure the normal operation of the liquid crystal display screen, and improve the competitiveness of the product.

[0004] The technical problem to be solved by the utility model is realized through the following technical solutions:

[0005] To solve the above technical problem, the utility model provides a liquid crystal display screen with heat insulation function, which includes a lower frame. The lower frame includes a bottom plate and side walls extending upward from the edge of the bottom plate. On the upper surface of the bottom plate, a reflective sheet, a light guide plate, an optical film group, a middle frame, a lower polarizer, a lower substrate, an upper substrate, and an upper polarizer are sequentially stacked from bottom to top. The lower substrate is longer than the upper substrate and extends outward to form a step. A driving IC is arranged on the upper surface of the lower substrate at the step. An LED lamp is fixed on the side wall, and the LED lamp is located below the driving IC. A heat insulation layer is arranged on the upper surface of the middle frame between the driving IC and the LED lamp.

[0006] As a preferred embodiment of the liquid crystal display screen with heat insulation function provided by the utility model, the heat insulation layer includes a black adhesive, an aerogel polymer closed-cell foam layer, a heat dissipation layer, and a white single-sided PET tape, which are sequentially stacked from bottom to top.

[0007] As a preferred embodiment of the liquid crystal display screen with heat insulation function provided by the utility model, the material of the lower frame is aluminum or aluminum alloy.

[0008] As a preferred embodiment of the liquid crystal display screen with heat insulation function provided by the utility model, a first graphite sheet is fixed on the lower surface of the lower substrate at the driving IC.

[0009] As a preferred embodiment of the liquid crystal display screen with heat insulation function provided by the present utility model, a second graphite sheet is fixed on the lower surface of the bottom plate at the position of the LED lamp.

[0010] As a preferred embodiment of the liquid crystal display screen with heat insulation function provided by the present utility model, a foam is provided between the middle frame and the lower polarizer.

[0011] As a preferred embodiment of the liquid crystal display screen with heat insulation function provided by the present utility model, the thickness of the heat insulation layer is less than or equal to the thickness of the foam.

[0012] As a preferred embodiment of the liquid crystal display screen with heat insulation function provided by the present utility model, the foam and the heat insulation layer are integrally formed.

[0013] As a preferred embodiment of the liquid crystal display screen with heat insulation function provided by the present utility model, the heat insulation layer is arranged on the lower surface of the foam.

[0014] As a preferred embodiment of the liquid crystal display screen with heat insulation function provided by the present utility model, the thickness of the foam is 4 to 5 times the thickness of the heat insulation layer.

[0015] The present utility model has the following beneficial effects:

[0016] Since a heat insulation layer is arranged on the upper surface of the middle frame between the driving IC and the LED lamp, the heat insulation layer can isolate the heat dissipated between the driving IC and the LED lamp, so that the heat of the LED lamp and the driving IC is respectively transferred at the backlight module and the display module, and the heat dissipated by the LED lamp and the driving IC is not superposed on each other, thereby avoiding the temperature rise of a single area exceeding the standard, ensuring the normal operation of the liquid crystal display screen, and improving the competitiveness of the product. Description of the Drawings

[0017] In order to more clearly illustrate the solutions in the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of a liquid crystal display screen with heat insulation function provided by the present utility model.

[0019] Figure 2 For Figure 1 the schematic structural diagram of the heat insulation layer in

[0020] Explanation of the reference numerals in the drawings:

[0021] Lower frame 1; bottom plate 11; side wall 12; middle frame 2; lower substrate 3; upper substrate 4; driving IC 5; LED lamp 6; heat insulation layer 7; black adhesive 71; aerogel polymer closed-cell foaming layer 72; heat equalizing layer 73; white single-sided PET tape 74; first graphite sheet 8; second graphite sheet 9; foam 10. Specific embodiments

[0022] In order to enable those skilled in the art to better understand the solution of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 a limitation of the present invention.

[0024] In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood 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 at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0025] The utility model provides a liquid crystal display screen with a heat insulation function, which comprises a lower frame. The lower frame includes a bottom plate and a side wall extending upward from the edge of the bottom plate. On the upper surface of the bottom plate, a reflective sheet, a light guide plate, an optical film group, a middle frame, a lower polarizer, a lower substrate, an upper substrate and an upper polarizer are sequentially stacked from bottom to top. The lower substrate is longer than the upper substrate and extends outward to form a step. A driving IC is arranged on the upper surface of the lower substrate at the step. An LED lamp is fixed on the side wall, and the LED lamp is located below the driving IC. A heat insulation layer is arranged on the upper surface of the middle frame between the driving IC and the LED lamp.

[0026] Since a heat insulation layer is arranged on the upper surface of the middle frame between the driving IC and the LED lamp, the heat insulation layer can isolate the heat dissipated between the driving IC and the LED lamp, so that the heat of the LED lamp and the driving IC is respectively transferred at the backlight module and the display module, and the heat dissipated by the LED lamp and the driving IC does not overlap with each other, thereby avoiding the over-temperature of a single area, ensuring the normal operation of the liquid crystal display screen, and improving the competitiveness of the product.

[0027] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the drawings. The present invention will be described in detail below with reference to the drawings and embodiments. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0028] Example 1, please refer to Figure 1, A liquid crystal display screen with a heat insulation function provided by the present utility model, which includes a lower frame 1. The lower frame 1 includes a bottom plate 11 and side walls 12 extending upward from the edge of the bottom plate 11. On the upper surface of the bottom plate 11, a reflective sheet, a light guide plate, an optical film group, a middle frame 2, a lower polarizer, a lower substrate 3, an upper substrate 4, and an upper polarizer are sequentially stacked from bottom to top. The lower substrate 3 is longer than the upper substrate 4 and extends outward to form a step. On the upper surface of the lower substrate 3 at the step, a driving IC 5 is provided. An LED lamp 6 is fixed on the side wall 12, and the LED lamp 6 is located below the driving IC 5. On the upper surface of the middle frame 2 between the driving IC 5 and the LED lamp 6, a heat insulation layer 7 is provided. Since the heat insulation layer 7 is provided on the upper surface of the middle frame 2 between the driving IC 5 and the LED lamp 6, the heat insulation layer 7 can isolate the heat dissipated between the driving IC 5 and the LED lamp 6, so that the heat of the LED lamp 6 and the driving IC 5 is respectively transferred at the backlight module and the display module, and the heat dissipated by the LED lamp 6 and the driving IC 5 is not superimposed on each other, thereby avoiding the over-temperature of a single area, ensuring the normal operation of the liquid crystal display screen, and improving the competitiveness of the product.

[0029] Please refer to Figure 2 , Further, the heat insulation layer 7 includes a black adhesive 71, an aerogel polymer closed-cell foaming layer 72, a heat dissipation layer 73, and a white single-sided PET tape 74, which are sequentially stacked from bottom to top.

[0030] Further, the material of the lower frame 1 is aluminum or aluminum alloy. Aluminum or aluminum alloy has a high thermal conductivity, which can quickly dissipate the heat dissipated by the LED lamp 6 to the outside, thereby avoiding overheating.

[0031] Further, a first graphite sheet 8 is fixed on the lower surface of the lower substrate 3 at the position of the driving IC 5, and the heat at the driving IC 5 is dissipated through the first graphite sheet 8, thereby achieving the effect of rapid cooling.

[0032] Further, a second graphite sheet 9 is fixed on the lower surface of the bottom plate 11 at the position of the LED lamp 6, and the heat at the LED lamp 6 is dissipated through the second graphite sheet 9, thereby achieving the effect of rapid cooling.

[0033] Embodiment 2, please refer to Figure 1 , As a further optimized solution of Embodiment 1, in this embodiment, a foam 10 is provided between the middle frame 2 and the lower polarizer. The foam 10 can not only play a buffering role but also play a dust-proof role.

[0034] Further, the thickness of the heat insulation layer 7 is less than or equal to the thickness of the foam 10 to avoid increasing the height of the module.

[0035] Furthermore, the foam 10 and the heat insulation layer 7 are integrally formed. When attaching the foam 10, the heat insulation layer 7 can be attached at the same time, reducing the attaching process, lowering the assembly cost, and enhancing the competitiveness of the product.

[0036] Furthermore, the heat insulation layer 7 is disposed on the lower surface of the foam 10 to enable better integral formation of the foam 10 and the heat insulation layer 7. The thickness of the foam 10 is 4 to 5 times the thickness of the heat insulation layer 7 to reduce the thickness of the module.

[0037] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection, an electrical connection, or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. 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.

[0038] Obviously, the embodiments described above are only a part of the embodiments of the present application, rather than all of them. The drawings show the preferred embodiments of the present application, but do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent substitution on some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present application in other related technical fields is equally within the scope of the patent protection of the present application.

Claims

1. A liquid crystal display with heat insulation function, characterized in that, It includes a lower frame, the lower frame includes a bottom plate and side walls extending upward from the edge of the bottom plate. On the upper surface of the bottom plate, a reflective sheet, a light guide plate, an optical film group, a middle frame, a lower polarizer, a lower substrate, an upper substrate, and an upper polarizer are sequentially stacked from bottom to top. The lower substrate is longer than the upper substrate and extends outward to form a step. A driving IC is disposed on the upper surface of the lower substrate at the step. An LED lamp is fixed on the side wall, and the LED lamp is located below the driving IC. A heat insulation layer is disposed on the upper surface of the middle frame between the driving IC and the LED lamp.

2. The liquid crystal display screen with heat insulation function according to claim 1, characterized in that, The heat insulation layer includes a black adhesive, an aerogel polymer closed-cell foaming layer, a heat equalizing layer, and a white single-sided PET tape, which are sequentially stacked from bottom to top.

3. The liquid crystal display screen with heat insulation function according to claim 1, characterized in that, The material of the lower frame is aluminum or aluminum alloy.

4. The liquid crystal display screen with heat insulation function according to claim 1, wherein A first graphite sheet is fixed on the lower surface of the lower substrate at the position of the driving IC.

5. The liquid crystal display screen with heat insulation function according to claim 1, wherein, A second graphite sheet is fixed on the lower surface of the bottom plate at the position of the LED lamp.

6. The liquid crystal display screen with heat insulation function according to claim 1, characterized in that, A foam is disposed between the middle frame and the lower polarizer.

7. The liquid crystal display screen with heat insulation function according to claim 6, characterized in that, The thickness of the heat insulation layer is less than or equal to the thickness of the foam.

8. The liquid crystal display screen with heat insulation function according to claim 6, characterized in that, The foam and the heat insulation layer are integrally formed.

9. The liquid crystal display screen with heat insulation function according to claim 6, characterized in that, The heat insulation layer is disposed on the lower surface of the foam.

10. The liquid crystal display screen with heat insulation function according to claim 9, characterized in that, The thickness of the foam is 4 to 5 times the thickness of the heat insulation layer.

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