Display module capable of improving heat dissipation effect

Abstract

The utility model discloses a display module capable of improving heat dissipation effect, which comprises a display screen and a backlight, an iron stand is arranged on one side of the backlight, the iron stand surrounds the periphery of the display screen and the periphery of the backlight, an LED light bar used for emitting light is arranged in the backlight, and the LED light bar is used for emitting light. A double-layer graphite heat dissipation film used for dissipating heat generated by the LED lamp strip is arranged in the backlight. The display module has the effect that the heat of the LED light bar can be quickly conducted to the iron stand, so that the display screen and backlight components are prevented from losing efficacy due to high temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, in particular to a display module with improved heat dissipation effect. Background Art

[0002] With the rapid development of electronic products, the demand for higher brightness is increasing. This has led to a continuous increase in the number of backlight LEDs in display modules and their power consumption, resulting in a sharp increase in backlight temperature and increasing customer attention to backlight heat dissipation. LEDs have a low photoelectric conversion rate, and a large amount of electrical energy is converted into heat during operation. If this heat cannot be dissipated in a timely manner, the LED chip temperature will overheat, affecting the LED's lifespan, luminous efficiency, and stability. Furthermore, excessively high temperatures can affect the electro-optical performance of LCD screens, affecting the overall performance of the product. Therefore, improving heat dissipation capacity is a key technical issue facing LED backlights.

[0003] In the prior art, graphite sheets are usually attached to the backlight to achieve the effect of heat dissipation. However, bubbles are easily generated during the attachment process of traditional graphite sheets, which affects the appearance of the product. In order to prevent this problem, punching is often used. After punching, the hole structure in the middle of the graphite sheet will cause a large amount of thermal resistance during the heat conduction process, affecting the heat dissipation effect. Utility Model Content

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a display module with improved heat dissipation effect.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A display module for improving heat dissipation effect includes: a display screen and a backlight, an iron frame is provided on one side of the backlight, the iron frame surrounds the periphery of the display screen and the backlight, an LED light strip for emitting light is provided in the backlight, and a double-layer graphite heat dissipation film is provided in the backlight for dissipating heat generated by the LED light strip, the double-layer graphite heat dissipation film is located on the side of the iron frame facing the LED light strip, and the double-layer graphite heat dissipation film is arranged along the circumferential direction of the inner wall of the iron frame, the double-layer graphite heat dissipation film includes a substrate layer, a first graphite layer, a first adhesive layer, a second graphite layer and a second adhesive layer which are arranged in sequence, the second adhesive layer is located on the side of the iron frame facing the LED light strip, the substrate layer is in contact with the iron frame, and the double-layer graphite heat dissipation film is provided with anti-bubble holes for avoiding the generation of bubbles during the attachment process, the anti-bubble holes are opened in a long strip shape, and the anti-bubble holes are formed by punching the double-layer graphite heat dissipation film along the direction of heat conduction.

[0007] In one embodiment, the LED light strip is composed of a plurality of LED lights. The LED light strip is arranged at the inner bottom of the iron frame, and the LED light strip is arranged along the length direction of the lower end of the iron frame.

[0008] In one embodiment, the substrate layer is a PET film.

[0009] In one embodiment, the side of the substrate layer facing the iron frame is provided with glue.

[0010] In one embodiment, the first glue layer and the second glue layer are heat-conducting glue.

[0011] In one embodiment, both the first graphite layer and the second graphite layer are made of graphite material, and the thickness of the first graphite layer and the second graphite layer is 20μm - 40μm.

[0012] Compared with the prior art, the present utility model has at least the following advantages:

[0013] A display module for improving heat dissipation effect of the present utility model replaces the traditional graphite sheet by setting a double-layer graphite heat dissipation film. At the same time, the double-layer graphite heat dissipation film is slit along the heat conduction direction to form anti-bubble holes to replace the traditional punching method, reducing the thermal resistance. The heat generated by the LED light strip is quickly conducted to the iron frame with a lower temperature on the opposite side through the double-layer graphite heat dissipation film, so as to reduce the temperature at the LED light strip, improve the heat dissipation efficiency of the LED light strip under high temperature conditions, and avoid the failure of the LED light strip, the backlight component and the display screen component due to high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below.

[0015] Figure 1 It is a schematic structural diagram of a display module for improving heat dissipation effect provided by the present utility model;

[0016] Figure 2 It is a schematic stacked structural diagram of a double-layer graphite heat dissipation film in a display module for improving heat dissipation effect provided by the present utility model;

[0017] Figure 3 It is a schematic structural diagram of a double-layer graphite heat dissipation film in a display module for improving heat dissipation effect provided by the present utility model.

[0018] BRIEF DESCRIPTION OF THE DRAWINGS: 10. Display screen; 20. Backlight; 21. Iron frame; 30. LED light strip; 40. Double-layer graphite heat dissipation film; 41. Substrate layer; 42. First graphite layer; 43. First glue layer; 44. Second graphite layer; 45. Second glue layer; 50. Anti-bubble hole. Detailed implementation mode

[0019] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0020] A display module for improving heat dissipation effect, referring to Figure 1 , includes a display screen 10 and a backlight 20. The display screen 10 is accommodated in the backlight 20. A steel frame 21 is provided on one side of the backlight 20. The steel frame 21 is arranged on the periphery of the backlight 20, and the steel frame 21 surrounds the peripheries of the display screen 10 and the backlight 20.

[0021] Referring to Figure 1 , an LED light bar 30 for emitting light is provided in the backlight 20. The LED light bar 30 is composed of a plurality of LED lights. The LED light bar 30 is arranged at the inner bottom of the steel frame 21, and the LED light bar 30 is arranged along the length direction of the lower end of the steel frame 21. Since a large amount of heat is generated when the LED light bar 30 emits light, the LED light bar 30 will gather inside the backlight 20 and affect the heat dissipation of the display module. Therefore, a double-layer graphite heat dissipation film 40 for dissipating the heat generated by the LED light bar 30 is provided in the backlight 20. The double-layer graphite heat dissipation film 40 is located on the side of the steel frame 21 facing the LED light bar 30, and the double-layer graphite heat dissipation film 40 is arranged along the circumferential direction of the inner wall of the steel frame 21 to dissipate heat from the display screen 10 and the backlight 20 inside the steel frame 21.

[0022] Referring to Figure 1 , the heat source at the LED light bar 30 is concentrated, and the temperature at the position of the steel frame 21 on the opposite side of the heat source is relatively low. Therefore, the double-layer graphite heat dissipation film 40 is used to conduct the heat at the LED light bar 30 to the steel frame 21 on the opposite side for dissipation.

[0023] Referring to Figure 2 , the double-layer graphite heat dissipation film 40 includes a substrate layer 41, a first graphite layer 42, a first adhesive layer 43, a second graphite layer 44, and a second adhesive layer 45 arranged in sequence. The second adhesive layer 45 is located on the side of the steel frame 21 facing the LED light bar 30, and the substrate layer 41 is in contact with the steel frame 21.

[0024] Furthermore, referring to Figure 2 , the substrate layer 41 is a PET film. The side of the substrate layer 41 facing the steel frame 21 is provided with adhesive, and the substrate layer 41 can be pasted onto the steel frame 21 to fix the double-layer graphite heat dissipation film 40 on the steel frame 21.

[0025] Furthermore, referring to Figure 2 , the first adhesive layer 43 and the second adhesive layer 45 are heat-conducting adhesives. The first adhesive layer 43 and the second adhesive layer 45 are used to conduct heat to the first graphite layer 42 and the second graphite layer 44 respectively, so as to transfer the heat layer by layer to the steel frame 21 on the opposite side of the LED light bar 30.

[0026] Referring to Figure 2 , both the first graphite layer 42 and the second graphite layer 44 are made of graphite material, and the thickness of the first graphite layer 42 and the second graphite layer 44 is 20μm - 40μm. By providing a double-layer graphite layer of the first graphite layer 42 and the second graphite layer 44, the heat conduction effect of the double-layer graphite heat dissipation film 40 is improved. Compared with the traditional graphite heat dissipation film that can only conduct a single-point heat source to the graphite layer and then conduct heat in the horizontal direction, the double-layer graphite heat dissipation film 40 can conduct the heat of the LED strip 30 to the second graphite layer 44 and then quickly conduct it in two horizontal directions. After the heat is conducted to the second graphite layer 44, it becomes a new surface heat source, and then in cooperation with the first adhesive layer 43 and the first graphite layer 42, the heat generated by the LED strip 30 is quickly conducted to the iron frame 21 on the opposite side of the heat source to achieve the cooling effect.

[0027] Referring to Figure 3 , in order to avoid generating air bubbles during the attachment process of the double-layer graphite heat dissipation film 40, anti-air bubble holes 50 are provided on the double-layer graphite heat dissipation film 40, and the anti-air bubble holes 50 are formed in a long strip shape. The anti-air bubble holes 50 are formed by slitting the double-layer graphite heat dissipation film 40 along the heat conduction direction. Compared with the prior art of drilling round holes in the graphite sheet, it can prevent air bubbles from being generated during the attachment process and can also greatly reduce the thermal resistance generated during the conduction process.

[0028] The display module replaces the traditional graphite sheet by providing the double-layer graphite heat dissipation film 40. At the same time, the double-layer graphite heat dissipation film 40 is slit along the heat conduction direction to form anti-air bubble holes 50 to replace the traditional drilling method, reducing the thermal resistance. The heat generated by the LED strip 30 is quickly conducted to the iron frame 21 with a lower temperature on the opposite side through the double-layer graphite heat dissipation film 40, so as to reduce the temperature at the LED strip 30, improve the heat dissipation efficiency of the LED strip 30 under high-temperature conditions, and avoid the LED strip 30, the backlight 20 component, and the display screen 10 component from failing due to high temperature.

[0029] The above embodiments only represent several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A display module for improving heat dissipation effect, characterized in that Comprising: A display screen (10) and a backlight (20), a steel frame (21) is provided on one side of the backlight (20), the steel frame (21) surrounds the periphery of the display screen (10) and the backlight (20), an LED light bar (30) for emitting light is provided in the backlight (20), a double-layer graphite heat dissipation film (40) for dissipating the heat generated by the LED light bar (30) is provided in the backlight (20), the double-layer graphite heat dissipation film (40) is located on the side of the steel frame (21) facing the LED light bar (30), and the double-layer graphite heat dissipation film (40) is arranged along the circumferential direction of the inner wall of the steel frame (21), the double-layer graphite heat dissipation film (40) comprises a base material layer (41), a first graphite layer (42), a first adhesive layer (43), a second graphite layer (44) and a second adhesive layer (4)(5) arranged in sequence, the second adhesive layer (45) is located on the side of the steel frame (21) facing the LED light bar (30), the base material layer (41) is in contact with the steel frame (21), anti-bubble holes (50) for preventing bubbles from being generated during the pasting process are provided on the double-layer graphite heat dissipation film (40), the anti-bubble holes (50) are arranged in a long strip shape, and the anti-bubble holes (50) are formed by slitting the double-layer graphite heat dissipation film (40) along the heat conduction direction.

2. The display module for improving heat dissipation effect according to claim 1, wherein The LED light bar (30) is composed of a plurality of LED lights, the LED light bar (30) is arranged at the inner bottom of the steel frame (21), and the LED light bar (30) is arranged along the length direction of the lower end of the steel frame (21).

3. The display module for improving heat dissipation effect according to claim 1, wherein The base material layer (41) is a PET film.

4. The display module for improving heat dissipation effect according to claim 3, wherein The side of the base material layer (41) facing the steel frame (21) is provided with adhesive.

5. The display module for improving heat dissipation effect according to claim 1, wherein The first adhesive layer (43) and the second adhesive layer (45) are heat-conducting adhesives.

6. The display module for improving heat dissipation effect according to claim 1, wherein Both the first graphite layer (42) and the second graphite layer (44) are made of graphite material, and the thicknesses of the first graphite layer (42) and the second graphite layer (44) are 20μm - 40μm.

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