Backlight display module easy to dissipate heat

Abstract

The utility model discloses a backlight display module easy to dissipate heat, which comprises a display module body, the display module body comprises a cover plate, a display screen and a backlight module which are arranged in sequence, and a graphite sheet for dissipating heat is arranged in the back of the backlight module. The graphite flake contains magnetic particles which are used for facilitating grounding connection of the backlight module and the mobile phone middle frame. The backlight display module has the advantages that heat of the backlight module can be dissipated conveniently, and grounding connection of the backlight module and the middle frame of the mobile phone is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, in particular to a backlight display module which is easy to dissipate heat. Background Art

[0002] Liquid crystal display devices are widely used in various information, communication and consumer electronic products. Liquid crystal display modules are mainly composed of liquid crystal display screens and backlight modules. The surface of the liquid crystal display screen is usually provided with a cover plate for protection, which provides hardness for the liquid crystal display screen. The backlight module provides light source for the liquid crystal display screen, and the light source enters the liquid crystal display screen and displays various colors. The backlight module generates heat when it emits light. In order to dissipate heat for the display module, current mobile phone manufacturers and module manufacturers will attach graphite sheets on the back of the display module to dissipate heat for the display module through the graphite sheets.

[0003] In the prior art, the position where the graphite sheet is attached to the back of the display module cannot be effectively grounded with the mobile phone middle frame or the entire device, which reduces the effective grounding area between the display module and the mobile phone middle frame or the entire device and affects the grounding effect. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a backlight display module that is easy to dissipate heat.

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

[0006] A backlight display module that is easy to dissipate heat comprises: a display module body, wherein the display module body comprises a cover plate, a display screen and a backlight module which are arranged in sequence, a graphite sheet for dissipating heat is built into the back of the backlight module, and the graphite sheet contains magnetic particles for facilitating the grounding connection between the backlight module and a mobile phone middle frame.

[0007] In one embodiment, the backlight module includes a plastic frame and an iron frame, the iron frame is provided with a plurality of openings, the plurality of openings are evenly distributed on the iron frame, and the graphite sheet is disposed in the openings.

[0008] In one embodiment, the openings are arranged in the shape of a circle or a regular hexagon with a circumscribed circle.

[0009] In one embodiment, the radius of the opening is 4 mm-6 mm.

[0010] In one embodiment, the opening located near the left or right edge of the iron frame is 3mm-5mm away from the edge of the iron frame, and the opening located near the upper edge of the iron frame is 6mm-8mm away from the upper edge of the iron frame.

[0011] In one embodiment, a water drop position is provided near the upper edge of the display module body, and the distance between the opening near the water drop position and the water drop position is 2 mm-4 mm.

[0012] In one embodiment, the graphite sheet is mainly made of graphite material.

[0013] In one embodiment, the thickness of the graphite sheet is 25um-35um, and the color of the graphite sheet is gray or black.

[0014] In one embodiment, the diameter of the magnetic particles is 1 um-5 um, and the magnetic particles are evenly distributed in the graphite sheet.

[0015] In one embodiment, an FPC is bound to the display screen, one end of the FPC is bent to the back side of the backlight module and attached to the back side of the iron frame, the iron frame does not have the opening at the pasting position relative to the FPC, and the opening located at the lowermost side is 25mm-35mm away from the bending position of the FPC.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] The utility model discloses a backlight display module that is easy to dissipate heat. By arranging a graphite sheet inside an iron frame, the heat generated by the backlight module can be evenly and effectively dispersed, achieving a good heat dissipation effect. Magnetic particles are arranged in the graphite sheet, which will not affect the grounding connection between the backlight module and the middle frame of the mobile phone. The graphite sheet is built into the iron frame, which makes the weight of the iron frame lighter, thereby making the entire display module lighter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0019] Figure 1 A schematic diagram of the structure of a backlight display module that is easy to dissipate heat provided by the utility model;

[0020] Figure 2 A schematic diagram of the back structure of a backlight display module that is easy to dissipate heat provided by the utility model;

[0021] Figure 3 The utility model provides a structural schematic diagram of a graphite sheet in a backlight display module that is easy to dissipate heat.

[0022] Description of the drawings: 10, display module body; 20, cover plate; 30, display screen; 31, FPC; 40, backlight module; 41, plastic frame; 42, iron frame; 421, opening; 50, graphite sheet; 51, magnetic particles; 60, water drop position. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0024] A backlight display module that is easy to dissipate heat, referring to Figure 1 , including a display module body 10, the display module body 10 includes a cover plate 20, a display screen 30 and a backlight module 40 arranged in sequence, the cover plate 20 is attached to the display screen 30, and the cover plate 20 and the display screen 30 are fixed together by OCA optical glue. The backlight module 40 is located on the side of the display screen 30 away from the cover plate 20, and the backlight module 40 includes a glue frame 41 and an iron frame 42, the glue frame 41 is a rectangular hollow setting, the iron frame 42 is an opening on one side, and the iron frame 42 and the glue frame 41 are combined to form a concave backlight module 40. The side of the iron frame 42 away from the glue frame 41 is the back side of the display module body 10.

[0025] Reference Figure 1 A light guide plate is arranged in the backlight module 40, and the light guide plate is arranged along the length direction of the iron frame 42, and the light guide plate is limited in the rubber frame 41 and the iron frame 42. A reflective sheet is arranged on the light incident surface of the light guide plate, an optical film is arranged on the light emitting surface of the light guide plate, and an LED lamp is also arranged on the light incident surface of the light guide plate. The LED lamp generates heat when working, and the generated heat needs to be dissipated in time to ensure the normal use of the display module body 10.

[0026] Reference Figure 1 The iron frame 42 has a graphite sheet 50 for heat dissipation built in it, and the graphite sheet 50 is embedded in the iron frame 42. The iron frame 42 is provided with a plurality of openings 421, and the graphite sheet 50 is disposed in the openings 421.

[0027] Further, refer to Figure 2 , the opening 421 is a regular hexagonal arrangement of a circle or a circumscribed circle, and the radius of the opening 421 is 4mm-6mm. Multiple openings 421 are evenly distributed on the iron frame 42. The opening 421 located near the left or right edge of the iron frame 42 is 3mm-5mm away from the edge of the iron frame 42. The opening 421 is 6mm-8mm away from the upper edge of the iron frame 42. A water drop position 60 is provided near the upper edge of the display module body 10, and the distance between the opening 421 located near the water drop position 60 and the water drop position 60 is 2mm-4mm.

[0028] Further, refer to Figure 2The display screen 30 is bound with FPC 31, one end of FPC 31 is bound to the display screen 30, and the other end of FPC 31 is bent to the back of the backlight module 40 and attached to the back of the iron frame 42. FPC 31 is attached to the iron frame 42 by conductive double-sided adhesive, and the iron frame 42 is not provided with an opening 421 at the adhesive position of FPC 31 to avoid affecting the adhesive fixation of FPC 31.

[0029] Further, refer to Figure 2 The distance between the opening 421 at the bottom and the bending position of the FPC 31 is 25 mm-35 mm to ensure that there is no opening 421 at the pasting position of the FPC 31.

[0030] Reference Figure 2 The graphite sheet 50 is mainly made of graphite material, and the material can be WS-25, KGS025 and KGS032. The thickness of the graphite sheet 50 is 25um-35um, and the color of the graphite sheet 50 is gray or black, so as to effectively prevent the light of the backlight module 40 from overflowing from the graphite sheet 50.

[0031] Reference Figure 3 The graphite sheet 50 contains magnetic particles 51, the diameter of the magnetic particles 51 is 1um-5um, and the density of the magnetic particles 51 is 4.0-7.5g / cm^3. The magnetic particles 51 are elliptical metal magnetic particles 51, and the magnetic particles 51 are evenly distributed in the graphite sheet 50, so that when the display module body 10 is grounded to the mobile phone middle frame, the backlight module 40 is better grounded to the mobile phone middle frame.

[0032] Reference Figure 1-3 By setting the graphite sheet 50 inside the iron frame 42, the heat generated by the backlight module 40 can be evenly and effectively dispersed, achieving a good heat dissipation effect, and the graphite sheet 50 is provided with magnetic particles 51, which will not affect the ground connection between the backlight module 40 and the mobile phone middle frame. Using the graphite sheet 50 inside the iron frame 42 makes the weight of the iron frame 42 lighter, thereby making the entire display module body 10 lighter.

[0033] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A backlight display module that is easy to dissipate heat, characterized in that: include: A display module body (10), the display module body (10) comprising a cover plate (20), a display screen (30) and a backlight module (40) which are arranged in sequence, a graphite sheet (50) for heat dissipation being built into the back of the backlight module (40), the graphite sheet (50) containing magnetic particles (51) for facilitating ground connection between the backlight module (40) and a mobile phone middle frame.

2. The backlight display module that is easy to dissipate heat according to claim 1, characterized in that: The backlight module (40) comprises a plastic frame (41) and an iron frame (42); a plurality of openings (421) are provided on the iron frame (42); the plurality of openings (421) are evenly distributed on the iron frame (42); and the graphite sheet (50) is arranged in the openings (421).

3. A backlight display module that is easy to dissipate heat according to claim 2, characterized in that: The opening (421) is arranged in the shape of a circle or a regular hexagon with a circumscribed circle.

4. The backlight display module that is easy to dissipate heat according to claim 3, characterized in that: The radius of the opening (421) is 4 mm to 6 mm.

5. A backlight display module that is easy to dissipate heat according to claim 4, characterized in that: The opening (421) located near the left or right edge of the iron frame (42) is 3 mm to 5 mm away from the edge of the iron frame (42), and the opening (421) located near the upper edge of the iron frame (42) is 6 mm to 8 mm away from the upper edge of the iron frame (42).

6. A backlight display module that is easy to dissipate heat according to claim 5, characterized in that: A water drop position (60) is provided near the upper edge of the display module body (10), and the distance between the opening (421) near the water drop position (60) and the water drop position (60) is 2 mm-4 mm.

7. The backlight display module that is easy to dissipate heat according to claim 6, characterized in that: The graphite sheet (50) is mainly made of graphite material.

8. The backlight display module that is easy to dissipate heat according to claim 7, characterized in that: The thickness of the graphite sheet (50) is 25 um-35 um, and the color of the graphite sheet (50) is gray or black.

9. The backlight display module that is easy to dissipate heat according to claim 1, characterized in that: The diameter of the magnetic particles (51) is 1 um-5 um, and the magnetic particles (51) are evenly distributed in the graphite sheet (50).

10. The backlight display module that is easy to dissipate heat according to claim 6, characterized in that: The display screen (30) is bound with an FPC (31), one end of the FPC (31) is bent to the back side of the backlight module (40) and attached to the back side of the iron frame (42), the iron frame (42) does not have the opening (421) at the attachment position of the FPC (31), and the distance between the opening (421) located at the bottom and the bending position of the FPC (31) is 25 mm-35 mm.

Images