A sealed dustproof display module

Abstract

The utility model discloses a sealed and dustproof display module, comprising: a cover plate, a display component, a backlight component, a conductive cloth and a shielding film; the display component comprises an FPC, one end of the FPC is fixed to a side of the display component close to the cover plate, and the other end is bent to a side of the display component away from the cover plate, the FPC comprises a component area and a bending area, the conductive cloth is attached to the outside of the bending area, the shielding film is laminated and attached to a side of the conductive cloth away from the FPC, and the shielding film extends to the component area. After the product is treated at high temperature, the high temperature resistant conductive cloth is still stably bonded to the cover plate surface, and the shielding film is arranged above the conductive cloth, the bonding area between the two is large, and the shielding film will not fall off from the conductive cloth due to the wrinkles of the shielding film. Therefore, the design of adding the conductive cloth improves the bonding stability of the shielding film and the cover plate surface, thereby ensuring the sealing of the FPC at the bending opening and preventing foreign matter from entering the product.

Description

Technical Field

[0001] The utility model relates to the field of display screens, in particular to a sealed and dustproof display module. Background Art

[0002] With the development of the automobile industry, the driving experience is constantly improving, and the use of large-size LCD screens for vehicle-mounted central control screens has become very popular; among them, a central control display module structure has gradually been promoted by vehicle manufacturers. It is mainly composed of a cover plate, optical glue, FOG display screen and casting backlight. Due to the large size of this structure, the FPC of its FOG display screen needs to be bent from one side of the cover plate to the back. In order to ensure the sealing and EMC performance of the opening at the bend of the FPC, the EMI shielding film attached to the FPC component area is required to extend and fold onto the cover plate to ensure that the opening at the bend of the FPC is completely sealed. However, the EMI shielding film material will shrink and wrinkle after the product withstands high temperature, and because the area of ​​the EMI shielding film folded to the cover plate surface is small, this part of the EMI shielding film will be wrinkled, causing the shielding film to detach from the cover plate, and the sealing of the FPC opening cannot be guaranteed. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a sealed and dustproof display module.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A sealed and dustproof display module comprises: a cover plate, a display component, a backlight component, a conductive cloth and a shielding film; the cover plate, the display component and the backlight component are connected in sequence, the cover plate comprises a visible area and a non-visible area, the display component comprises an FPC, one end of the FPC is fixed to a side of the display component close to the cover plate, and the other end is bent to a side of the display component away from the cover plate, the FPC comprises a component area and a bending area, one side of the conductive cloth is sticky, and the sticky side of the conductive cloth is attached to the outside of the bending area, the shielding film is laminated and attached to a side of the conductive cloth away from the FPC, and the shielding film is extended and attached to the component area, and the backlight component provides lighting for the display component.

[0006] In one embodiment, the shielding film is a black EMI film.

[0007] In one embodiment, the length of the shielding film is greater than the length of the conductive cloth, and the width of the shielding film is greater than the width of the conductive cloth.

[0008] In one embodiment, the conductive cloth includes a first section and a second section; the first section is bonded to the inner side of the cover plate, and the second section is bonded to the bending area of ​​the FPC.

[0009] In one embodiment, the first section is bonded to the non-visible area of ​​the cover.

[0010] In one embodiment, the display component further comprises an insulating film, wherein the insulating film is arranged on a surface of the component region, and the shielding film is arranged on a side of the insulating film away from the component region.

[0011] In one embodiment, the length of the insulating film is greater than the length of the component region, and the width of the insulating film is greater than the width of the component region.

[0012] In one embodiment, the insulating film is a PET film.

[0013] In one embodiment, the thickness of the insulating film is 0.1 mm.

[0014] In one embodiment, the display assembly further includes OCA glue, and the cover plate is bonded to the display assembly via the OCA glue.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The utility model discloses a sealed and dustproof display module by setting a cover plate, a display assembly, a backlight assembly, a conductive cloth and a shielding film. The cover plate, the display assembly and the backlight assembly are connected in sequence. The display assembly includes an FPC, and the FPC includes a component area and a bending area. One side of the conductive cloth is sticky, and the sticky side of the conductive cloth is attached to the outer side of the bending area. The shielding film is laminated and attached to the side of the conductive cloth away from the FPC, and the shielding film is extended and attached to the component area. The conductive cloth has the characteristic of high temperature resistance. After the product is treated at high temperature, the conductive cloth will not wrinkle and is still stably bonded to the cover plate surface. The shielding film is arranged above the conductive cloth. The bonding area between the conductive cloth and the shielding film is large, and the shielding film will not fall off from the conductive cloth due to the wrinkles of the shielding film. Therefore, the design of adding the conductive cloth improves the bonding stability of the shielding film and the cover plate surface, thereby ensuring the sealing of the FPC at the bending opening, and preventing foreign objects such as dust and pebbles from entering the interior of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1This is a schematic cross-sectional structure diagram of a sealed and dustproof display module in one embodiment of the utility model;

[0019] Figure 2 for Figure 1 A is a schematic diagram of the partially enlarged structure of the middle part;

[0020] Figure 3 A schematic diagram of the structure of the cover plate, FPC, conductive cloth and shielding film in one embodiment of the utility model

[0021] Figure 4 It is a schematic diagram of the back structure of a display assembly in an embodiment of the utility model.

[0022] Reference numerals:

[0023] The cover plate 10 , the display component 20 , the FPC 21 , the bending area 22 , the backlight component 30 , the conductive cloth 40 , the first section 41 , the second section 42 , the shielding film 50 , and the insulating film 60 . DETAILED DESCRIPTION

[0024] 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.

[0025] This application proposes a sealed and dustproof display module, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , including: a cover plate 10, a display component 20 and a backlight component 30 connected in sequence. The display component 20 includes an FPC 21, one end of the FPC 21 is fixed to the side of the display component 20 close to the cover plate 10, and the other end is bent to the side of the display component 20 away from the cover plate 10, so as to reduce the size of the product. The FPC 21 includes a component area and a bending area 22, one side of the conductive cloth 40 is sticky, and the sticky side of the conductive cloth 40 is attached to the outside of the bending area 22. The shielding film 50 is laminated and attached to the side of the conductive cloth 40 away from the FPC 21, and the shielding film 50 extends and is attached to the component area. The conductive cloth 40 has the characteristic of high temperature resistance. After the product is treated with high temperature, the conductive cloth 40 will not wrinkle and will still be stably bonded to the cover surface. The shielding film 50 is arranged above the conductive cloth 40. The bonding area between the conductive cloth 40 and the shielding film 50 is large. The shielding film 50 will not fall off the conductive cloth 40 due to wrinkles of the shielding film 50. Therefore, the design of adding the conductive cloth 40 improves the bonding stability between the shielding film 50 and the cover surface, thereby ensuring the sealing of the FPC21 at the bending opening, preventing foreign matter such as dust and pebbles from entering the interior of the product.

[0026] It should be noted that the sticky surfaces of the conductive cloth 40 and the shielding film 50 are both conductive, and the sticky surfaces are non-conductive. The sticky surfaces of the conductive cloth 40 and the shielding film 50 are respectively connected to the metal shell of the grounded backlight assembly 30, and then connected to the ground. When static electricity from the outside hits the conductive cloth 40 and the shielding film 50, the static electricity on the conductive cloth 40 and the shielding film 50 is respectively discharged from the metal shell of the backlight assembly 30 through their respective sticky surfaces, without affecting the operation of the electronic devices on the FPC 21, thereby improving the anti-interference ability of a sealed and dustproof display module.

[0027] Specifically, the cover plate 10 includes a visible area and an invisible area. The visible area presents the screen image for users to watch, while the invisible area is usually black. The cover plate 10 is provided with a black solid ink layer on the invisible area to cover the internal structure under the invisible area, thereby enhancing the user's sense of mystery about the structure and the sense of luxury of the product. The backlight assembly 30 provides illumination for the display assembly 20, so that the image formed by the liquid crystal molecules of the display assembly 20 can be displayed.

[0028] It should be noted again that the display assembly 20 also includes a display screen, an upper polarizer and a lower polarizer. The upper polarizer, the display screen and the lower polarizer are stacked in sequence. The display screen is filled with liquid crystal molecules, and the upper polarizer is bonded to the cover plate 10 by optical glue. The display screen is a FOG liquid crystal screen. The backlight assembly 30 mainly consists of an LED lamp, a reflective sheet, a light guide plate, an upper light-enhancing film, a lower light-enhancing film, a diffusion film, a backlight FPC and a backlight frame. The LED lamp is arranged on the side of the backlight frame, and the LED lamp is electrically connected to the backlight FPC. The reflective sheet, the light guide plate, the diffusion film, the lower light-enhancing film and the upper light-enhancing film are stacked in sequence and arranged in the accommodation space of the backlight frame. The reflective sheet abuts the backlight frame, and the light emitted by the LED lamp is reflected to the light guide plate via the reflective sheet. The backlight FPC is bent and fixed on the backlight frame. The light passes through the light guide plate, the diffusion film, the lower light-enhancing film and the upper light-enhancing film in sequence. The light guide plate converts the point light source of the LED lamp into a surface light source for uniform illumination. The upper and lower brightness enhancement films gather the scattered light emitted by the LED lamp toward the front direction to increase the brightness. The diffuser diffuses the light to make it more evenly illuminated. The reflector is also used to enhance the brightness of the light.

[0029] In one embodiment, the display component 20 further includes OCA glue, one side of the OCA glue is bonded to the cover plate 10, and the other side is bonded to the display component 20. Since the OCA glue is sticky on both sides and has excellent light transmittance, it does not affect the display of the picture.

[0030] Preferably, the shielding film 50 is a black EMI film.

[0031] In one embodiment, the length of the shielding film 50 is greater than the length of the conductive cloth 40, and the width of the shielding film 50 is greater than the width of the conductive cloth 40. When the product is subjected to high-temperature treatment, the shielding film 50 is subjected to the high temperature and wrinkles. This design makes the length and width of the shielding film 50 respectively greater than the length and width of the conductive cloth 40, and a margin is set for the heat wrinkles of the shielding film 50, thereby ensuring the shielding effect of the shielding film 50 on interference signals.

[0032] Please refer again Figure 2 and Figure 3 The conductive cloth 40 includes a first section 41 and a second section 42, which are connected at an obtuse angle, and the same side of the first section 41 and the second section 42 is sticky. The first section 41 is stably bonded to the inner side of the cover 10, unaffected by high temperature, to prevent the shielding film 50 from falling off the cover 10, and the second section 42 is bonded to the outer side of the bending area 22 of the FPC 21, doubly sealing the opening formed by the bending of the FPC 21, ensuring the sealing of the opening and the dustproof effect inside the product. The first section 41 is bonded to the invisible area of ​​the cover 10, covering the bonding between the conductive cloth 40 and the cover 10, and improving the aesthetics.

[0033] Please refer again Figure 3 The display assembly 20 further includes an insulating film 60, which is disposed on the surface of the component area to prevent the components on the component area from contacting other electronic devices and conducting electrical signals, thereby causing abnormal operation. The shielding film 50 is disposed on a side of the insulating film 60 away from the component area to prevent external electromagnetic interference from affecting the normal operation of the components in the component area and ensure EMC performance.

[0034] Furthermore, the length of the insulating film 60 is greater than the length of the component area, and the width of the insulating film 60 is greater than the width of the component area, so that the insulating film 60 can completely cover the component area to ensure the insulation effect of all components in the component area.

[0035] In addition, the insulating film 60 is a PET film, wherein the thickness of the insulating film 60 is 0.1 mm, so as to prevent the insulating film 60 from being pierced by sharp components, thereby affecting the insulating effect.

[0036] 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 sealed and dustproof display module, characterized in that: include: Cover plate, display assembly, backlight assembly, conductive fabric and shielding film; The cover plate, the display component and the backlight component are connected in sequence, the cover plate includes a visible area and a non-visible area, the display component includes an FPC, one end of the FPC is fixed to a side of the display component close to the cover plate, and the other end is bent to a side of the display component away from the cover plate, the FPC includes a component area and a bending area, one side of the conductive cloth is sticky, and the sticky side of the conductive cloth is attached to the outside of the bending area, the shielding film is stacked and attached to a side of the conductive cloth away from the FPC, and the shielding film is extended and attached to the component area, and the backlight component provides lighting for the display component.

2. A sealed and dustproof display module according to claim 1, characterized in that: The shielding film is a black EMI film.

3. The sealed and dustproof display module according to claim 1, characterized in that: The length of the shielding film is greater than the length of the conductive cloth, and the width of the shielding film is greater than the width of the conductive cloth.

4. The sealed and dustproof display module according to claim 1, characterized in that: The conductive cloth includes a first section and a second section; the first section is bonded to the inner side of the cover plate, and the second section is bonded to the bending area of ​​the FPC.

5. The sealed and dustproof display module according to claim 4, characterized in that: The first section is bonded to the non-visible area of ​​the cover plate.

6. The sealed and dustproof display module according to claim 1, characterized in that: The display component further comprises an insulating film, wherein the insulating film is arranged on a surface of the component region, and the shielding film is arranged on a side of the insulating film away from the component region.

7. The sealed and dustproof display module according to claim 6, characterized in that: The length of the insulating film is greater than the length of the component region, and the width of the insulating film is greater than the width of the component region.

8. The sealed and dustproof display module according to claim 6, characterized in that: The insulating film is a PET film.

9. The sealed and dustproof display module according to claim 6, characterized in that: The thickness of the insulating film is 0.1 mm.

10. The sealed and dustproof display module according to claim 1, characterized in that: The display assembly further includes OCA glue, and the cover plate is bonded to the display assembly via the OCA glue.

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