CN218037611U

CN218037611U - Cooling fin, backlight module and display screen

Info

Publication number: CN218037611U
Application number: CN202222266244.7U
Authority: CN
Inventors: 陈俊杰; 许福生; 王剑峰
Original assignee: Jiangxi Holitech Technology Co Ltd
Current assignee: Jiangxi Holitech Technology Co Ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-12-13
Anticipated expiration: 2032-08-26

Abstract

The utility model provides a radiating fin, a backlight module and a display screen, wherein the radiating fin comprises an insulating layer, heat-conducting silica gel and an attaching layer, one side of the insulating layer and one side of the attaching layer are attached all around to form a filling cavity, the heat-conducting silica gel is arranged in the filling cavity, one side of the insulating layer and one side of the attaching layer are tightly attached to the heat-conducting silica gel, and an unfilled region is formed in the filling cavity; the other surface of the attaching layer is used for attaching the heating piece; the heat-conducting silica gel is light in weight and good in heat-conducting effect, the size and the thickness of the heat-conducting silica gel can be automatically cut, the heat-conducting silica gel is set according to the space limitation of the power heating amount of the backlight source and the assembly environment, and the heat-radiating effect can be met under the size meeting the space limitation.

Description

Cooling fin, backlight module and display screen

Technical Field

The utility model relates to a backlight technical field particularly, relates to a fin, backlight unit and display screen.

Background

Liquid crystal display is as the output device at present various terminals, people are more and more high to its performance requirement that shows, the luminance of display screen has often influenced the display quality of display screen, therefore present liquid crystal display luminance demand is more and more high, the current consumption is more and more big, so calorific capacity is also more and more big, and the too high stability that can influence electronic components on liquid crystal display of heat, and then lead to the display effect not good, so it is very important to liquid crystal display's stable output to improve liquid crystal display's heat dispersion in a poor light, although have on the market through attached metal heat radiation fin on the backlight or lay the heat pipe and improve the heat dissipation of backlight, but have the following problem:

attaching metal heat dissipation fins or disposing heat pipes is usually only suitable for larger lcd screens, and because of its larger space, some mobile terminal displays with limited space, such as mobile phones, tablet computers, notebook computers, etc., often require portability, and the limited space is not suitable for attaching metal heat dissipation fins or disposing heat pipes.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a heat sink, a backlight module and a display screen to solve the above problems.

The utility model adopts the following scheme:

the application provides a radiating fin which comprises an insulating layer, heat-conducting silica gel and an attached layer, wherein a filling cavity is formed by one surface of the insulating layer and one surface of the attached layer in a surrounding fit mode, the heat-conducting silica gel is arranged in the filling cavity, one surface of the insulating layer and one surface of the attached layer are tightly attached to the heat-conducting silica gel, and an unfilled region is formed in the filling cavity; the other side of the attaching layer is used for attaching the heating piece.

Preferably, attached layer adopts the double faced adhesive tape of heat conduction, the another side on attached layer is still attached and is used for the protection the double faced adhesive tape face from the type membrane, just easily tear from the type membrane and separate, be convenient for the assembly of fin.

Preferably, the insulating layer is a solid black ink insulating layer.

Preferably, the other surface of the solid black ink insulating layer is provided with a groove for increasing the heat dissipation area.

Preferably, the PET protective layer is attached to the other side of the insulating layer.

The fin, through being provided with insulating layer, heat conduction silica gel and attached layer, heat conduction silica gel not only the quality is lighter, has good heat conduction effect, and its size and thickness can cut the setting by oneself, gives out heat and assembles the space restriction of environment according to backlight power and sets up, can satisfy radiating effect under the size that accords with the space restriction.

The utility model also provides a backlight unit, backlight unit's backlight source facing has the fin, the another side on the attached layer of fin in the back of backlight source.

The utility model also provides a display screen, including liquid crystal display and set up in the liquid crystal display back backlight unit.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a heat sink according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a backlight module according to an embodiment of the present invention;

icon: backlight module 10, heat sink 20, insulation layer 21, heat conductive silica gel 22, adhesive layer 23, release film 24, PET protection layer 25, unfilled region 26

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Examples

Referring to fig. 1 and fig. 2, the present embodiment provides a heat sink 20, including an insulating layer 21, a heat conductive silica gel 22, and an attachment layer 23, wherein a filling cavity is formed by attaching one surface of the insulating layer 21 and one surface of the attachment layer 23, the heat conductive silica gel 22 is disposed in the filling cavity, one surface of the insulating layer 21 and one surface of the attachment layer 23 are tightly attached to the heat conductive silica gel 22, and an unfilled region is further formed in the filling cavity; the other surface of the attaching layer 23 is used for attaching a heating element; the heat-conducting silica gel 22 is a high-activity heat-absorbing material, a good microporous structure is formed inside the material, the microporous structure has a strong heat-absorbing function and an active heat-radiating function, and the heat-conducting silica gel 22 has certain deformation after being extruded, and the unfilled area 26 provides a deformation space for the heat-conducting silica gel 22, so that the situation that the heat-conducting silica gel 22 is full of the whole filling cavity and overflows due to external extrusion is avoided; and the size and the thickness of the heat-conducting silica gel 22 can be set according to the power calorific value of the backlight source and the space limitation of the assembly environment.

In this embodiment, the attachment layer 23 is made of a heat-conductive double-sided adhesive tape, a release film 24 for protecting a surface of the double-sided adhesive tape is further attached to the other surface of the attachment layer 23, and the release film 24 is easy to tear, so as to facilitate assembly of the heat sink 20; the insulating layer 21 is a solid black ink insulating layer 21, grooves for increasing the heat dissipation area are distributed on the whole other surface of the solid black ink insulating layer 21, and a PET (polyethylene terephthalate) protective layer 25 is further attached to the insulating layer 21.

Fin 20, through being provided with insulating layer 21, heat conduction silica gel 22 and attached layer 23, heat conduction silica gel 22 not only the quality is lighter, has good heat conduction effect, and its size and thickness can cut the setting by oneself, sets up according to the space restriction of backlight power calorific capacity and assembly environment, can satisfy radiating effect under the size that accords with the space restriction.

The utility model also provides a backlight unit 10, backlight unit 10's backlight source upper berth have fin 20, the another side of the attached layer 23 of fin 20 in the back of backlight source.

The utility model also provides a display screen, including liquid crystal display and set up in at the liquid crystal display back backlight unit 10.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Claims

1. A radiating fin is characterized by comprising an insulating layer, heat-conducting silica gel and an attached layer, wherein a filling cavity is formed by attaching one surface of the insulating layer and one surface of the attached layer all around, the heat-conducting silica gel is arranged in the filling cavity, one surface of the insulating layer and one surface of the attached layer are tightly attached to the heat-conducting silica gel, and an unfilled area is formed in the filling cavity; the other side of the attaching layer is used for attaching the heating piece.

2. The heat sink as claimed in claim 1, wherein the attaching layer is made of a heat-conducting double-sided adhesive tape, a release film for protecting the surface of the double-sided adhesive tape is further attached to the other surface of the attaching layer, and the release film is easy to tear, thereby facilitating the assembly of the heat sink.

3. The heat sink as recited in claim 1 wherein the insulating layer is a solid black ink insulating layer.

4. A heat sink as claimed in claim 3, wherein the other side of the solid black ink insulating layer is provided with a groove for increasing a heat dissipation area.

5. The heat sink as claimed in claim 1, further comprising a PET protective layer attached to the other side of the insulating layer.

6. The backlight module is characterized in that the heat dissipation sheet as claimed in any one of claims 1 to 5 is attached to the backlight source of the backlight module, and the other surface of the heat dissipation sheet attachment layer is attached to the back surface of the backlight source.

7. A display screen, comprising a liquid crystal display screen and the backlight module set forth in claim 6 disposed on the back of the liquid crystal display screen.