Casting backlight module structure and touch casting display module comprising same

Abstract

The utility model provides a casting backlight module structure and a touch control casting display module including the same, the backlight module comprises a backlight casting and a middle iron stand, the backlight casting and the middle iron stand are buckled through buckles in the X, Y and Z directions, the middle iron stand comprises a bottom surface folding edge and a folding edge groove, the backlight casting comprises a first inner groove and a second inner groove, and the first inner groove and the second inner groove are arranged in the middle iron stand. The first inner groove abuts against the bottom face folding edge, and the second inner groove abuts against the folding edge groove. An FPC folding position of the FOG liquid crystal glass is reserved at the bottom of the casting backlight module; wherein in the folding position, black and black glue is attached between the first inner groove and the abutting face of the bottom face folding edge, black and black glue is attached between the second inner groove and the abutting face of the folding edge groove, and the edge of the folding edge groove is coated with a black glue layer. According to the application, a piece of 0.05 mm black back adhesive is additionally pasted between the bottom surface of the middle iron stand and the bearing surface of the inner groove of the casting at the FPC folding position, the back adhesive can enable the bottom surface of the middle iron stand and the bearing surface of the inner groove of the casting to be preliminarily bonded together without generating a gap, and the black adhesive also has a light absorption effect, so that the hidden danger of light leakage is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of cast backlight modules, and more specifically, to a cast backlight module structure and a touch cast display module including the same. Background Art

[0002] Currently, in-vehicle display modules are getting larger and larger, and the matching backlight structures also need to be larger. Due to the high strength, good hardness and flatness of cast backlights, they have been gradually promoted by vehicle manufacturers. However, due to their large size, their internal structures are complex, with many assembly buckles and gaps, resulting in light leakage in local structures. Especially for the light leakage at the FPC folding position of FOG, it is very easy to have refracted external light leakage. Therefore, a better structural design solution for the FPC folding position is needed.

[0003] In the traditional structure, the cooperation between the iron frame in the cast backlight and the castings in the X, Y, and Z directions is completed through the buckles of the iron frame and the side grooves of the castings. However, due to machining errors of the buckles, there are likely to be installation gaps between the bottom surface of the iron frame and the bearing surface of the inner groove of the casting in the Z-axis direction, which pose a potential risk of light leakage. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a cast backlight module structure and a touch cast display module including the same, which can avoid the risk of light leakage at the folding position.

[0005] Specifically, the specific technical solution of the utility model is as follows: A cast backlight module structure includes a backlight casting and an iron frame. The backlight casting and the iron frame are snap-fitted in the X, Y, and Z directions. The iron frame includes a bottom surface fold edge and a fold edge groove, and the backlight casting includes a first inner groove and a second inner groove. The first inner groove abuts against the bottom surface fold edge, and the second inner groove abuts against the fold edge groove; a FPC folding position for the FOG liquid crystal glass is reserved at the bottom of the cast backlight module; wherein, at the folding position, black glue is attached between the abutting surfaces of the first inner groove and the bottom surface fold edge, black glue is attached between the abutting surfaces of the second inner groove and the fold edge groove, and a black glue layer is coated on the edge of the fold edge groove.

[0006] As a preferred technical solution, the thickness of the black glue is 0.05 mm.

[0007] As a preferred technical solution, the black glue layer is a black hot melt glue layer.

[0008] As a preferred technical solution, the thickness of the black glue layer is 0.3 - 0.8 mm.

[0009] As a preferred technical solution, the first inner groove bears the backlight lamp board, the backlight functional film, and the backlight light guide plate.

[0010] As a preferred technical solution, the backlight panel and the backlight light guide plate are arranged opposite to each other, and the backlight light guide plate is arranged above the backlight panel.

[0011] As a preferred technical solution, the bottom surface hem is arranged in an L shape.

[0012] As a preferred technical solution, the bottom surface hem is connected to the hem groove.

[0013] On the other hand, a touch casting display module is proposed, which includes the casting backlight module structure and the FOG liquid crystal glass as described above, and the casting backlight module structure and the FOG liquid crystal glass are bonded and fixed.

[0014] As a preferred technical solution, the FPC of the FOG liquid crystal glass passes through the FPC folding position of the casting backlight module structure and is attached to the back of the casting backlight module.

[0015] The beneficial effect of the present utility model is that in the FPC folding position of this application, a 0.05 mm black black adhesive is added between the bottom surface of the middle iron frame and the bearing surface of the inner groove of the casting. This adhesive can initially bond the bottom surface of the middle iron frame and the bearing surface of the inner groove of the casting together without gaps, and the black adhesive also has a light absorption effect, eliminating the hidden danger of light leakage. Due to the stress release after long-term placement of the cooperation between the middle iron frame and the casting, there is a risk of the double-sided adhesive popping open. At the same time, black thermosetting adhesive is applied at the hem groove to ensure the firm and reliable cooperation between the middle iron frame and the casting at this position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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 will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of a casting backlight module proposed by an embodiment of the present utility model;

[0018] Figure 2 It is a partial structural schematic diagram of a casting backlight module intercepted by an embodiment of the present utility model;

[0019] Figure 3 It is a schematic structural diagram at the FPC folding position proposed by an embodiment of the present utility model.

[0020] Explanation of reference numerals: casting backlight module 1; backlight casting 2; middle iron frame 3; bottom surface hem 4; hem groove 5; first inner groove 61; second inner groove 62; FPC folding position 7; black black adhesive 8; black adhesive layer 9; backlight panel 10; backlight functional film 11; backlight light guide plate 12. Detailed Implementation Manner

[0021] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art.

[0022] In addition, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of this application. However, those skilled in the art will realize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of this application.

[0023] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0024] The flowcharts shown in the accompanying drawings are merely illustrative and not necessarily include all the content and operations / steps, nor are they necessarily executed in the described order. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to the actual situation.

[0025] It should be noted that: "a plurality" mentioned in this article refers to two or more.

[0026] Example 1

[0027] As Figure 1 shown, a casting backlight module structure proposed in this embodiment includes a backlight casting and a middle iron frame. The backlight casting and the middle iron frame are snap-fitted in the X, Y, and Z directions. The middle iron frame includes a bottom surface flange and a flange groove. The backlight casting includes a first inner groove and a second inner groove. The first inner groove abuts against the bottom surface flange, and the second inner groove abuts against the flange groove. An FPC folding position for the FOG liquid crystal glass is reserved at the bottom of the casting backlight module. Among them, at the folding position, black glue is attached between the abutting surfaces of the first inner groove and the bottom surface flange, black glue is attached between the abutting surfaces of the second inner groove and the flange groove, and a black glue layer is coated on the edge of the flange groove.

[0028] Preferably, the thickness of the black glue is 0.05 mm.

[0029] Preferably, the black glue layer is a black hot melt glue layer.

[0030] Preferably, the thickness of the black glue layer is 0.3 - 0.8 mm.

[0031] Preferably, the first inner groove bears a backlight panel, a backlight functional film, and a backlight light guide plate.

[0032] Preferably, the backlight panel and the backlight light guide plate are arranged opposite to each other, and the backlight light guide plate is arranged above the backlight panel.

[0033] Preferably, the bottom surface hem is arranged in an L shape.

[0034] Preferably, the bottom surface hem is connected to the hem groove.

[0035] Example 2

[0036] This embodiment provides a touch casting display module, which includes the casting backlight module structure and the FOG liquid crystal glass in Embodiment 1, and the casting backlight module structure and the FOG liquid crystal glass are bonded and fixed.

[0037] Preferably, the FPC of the FOG liquid crystal glass passes through the FPC folding position of the casting backlight module structure and is attached to the back of the casting backlight module. There will be no light leakage problem at the FPC folding position of this touch casting display module.

[0038] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A casting backlight module structure, characterized in that: It comprises a backlight casting and a middle iron frame, which are engaged with each other in the X, Y and Z directions by snap-fitting, the middle iron frame comprises a bottom folded edge and a folded edge groove, the backlight casting comprises a first inner groove and a second inner groove, the first inner groove abuts against the bottom folded edge, and the second inner groove abuts against the folded edge groove; an FPC folding position for FOG liquid crystal glass is reserved at the bottom of the casting backlight module; wherein, at the folding position, black glue is adhered between the abutting surface of the first inner groove and the bottom folded edge, black glue is adhered between the abutting surface of the second inner groove and the folded edge groove, and the edge of the folded edge groove is coated with a black glue layer.

2. The casting backlight module structure according to claim 1, characterized in that: The thickness of the black glue is 0.05 mm.

3. The casting backlight module structure according to claim 1, characterized in that: The black adhesive layer is a black hot-melt adhesive layer.

4. The casting backlight module structure according to claim 3, characterized in that: The thickness of the black glue layer is 0.3-0.8 mm.

5. The casting backlight module structure according to claim 1, characterized in that: The first inner groove carries the backlight lamp board, the backlight functional film and the backlight light guide plate.

6. The casting backlight module structure according to claim 5, characterized in that: The backlight panel is arranged opposite to the backlight guide plate, and the backlight guide plate is arranged above the backlight panel.

7. A casting backlight module structure according to any one of claims 1 to 6, characterized in that: The bottom folded edge is arranged in an L shape.

8. A casting backlight module structure according to any one of claims 1 to 6, characterized in that: The bottom fold is connected to the fold groove.

9. A touch casting display module, characterized in that: It comprises the casting backlight module structure and FOG liquid crystal glass as described in any one of claims 1 to 8, wherein the casting backlight module structure and FOG liquid crystal glass are bonded and fixed.

10. A touch casting display module according to claim 9, characterized in that: The FPC of the FOG liquid crystal glass passes through the FPC folding position of the casting backlight module structure and is attached to the back side of the casting backlight module.

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