Foreign matter preventing backlight module without middle iron frame and display device

Abstract

The utility model provides a foreign matter prevention backlight module without a middle iron frame, which comprises a bearing shell, at least two optical film components and at least two flexible anti-drop pieces, the bearing shell comprises a bottom plate and a frame body connected to the bottom plate, at least two mounting cavities are formed between the frame body and the bottom plate, and the mounting cavities are connected with the optical film components through the flexible anti-drop pieces. Mounting cavities are formed in the frame body, the optical film assemblies are correspondingly mounted in the mounting cavities, the flexible anti-falling parts and the mounting cavities are correspondingly arranged, one side edges of the flexible anti-falling parts are connected to the frame body, and the other side edges of the flexible anti-falling parts are connected to the upper surfaces of the optical film assemblies. According to the backlight module capable of preventing the foreign matters and without the middle iron frame, the product quality and the production efficiency can be improved, and the cost is reduced. The utility model further relates to a display device.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to a backlight module without a middle iron frame for preventing foreign matters and a display device. Background Art

[0002] In recent years, with the continuous improvement of people's awareness of driving safety, in-vehicle display screens have developed rapidly in the field of automotive electronics. It can provide real-time monitoring and display of the external environment of the carriage for the driver and passengers, providing guarantee for safe driving, and has become one of the essential devices for traffic safety. Automobile manufacturers have higher and higher requirements for the quality of in-vehicle display screens, and at the same time, higher requirements are also put forward for the control of foreign matters in visual effects and the control of material costs of in-vehicle display screens.

[0003] In the traditional in-vehicle backlight source, the middle iron frame and the die-cast part are connected by clamping blocks to fix the diaphragm assembly. This connection method has problems of falling of clamping chips and foreign matters during the three-comprehensive test or use process, and the cost of using the middle iron frame to fix the optical film is relatively high, and the labor cost and material cost are much more expensive. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a backlight module without a middle iron frame for preventing foreign matters, which can solve the problems existing in the prior art, improve the quality and production efficiency of products, and reduce costs.

[0005] The utility model provides a backlight module without a middle iron frame for preventing foreign matters, including a bearing shell, at least two optical film assemblies and at least two flexible anti-detachment parts. The bearing shell includes a bottom plate and a frame connected to the bottom plate. At least two installation cavities are formed between the frame and the bottom plate. Each optical film assembly is correspondingly installed in each installation cavity. Each flexible anti-detachment part is correspondingly arranged with each installation cavity. One side edge of each flexible anti-detachment part is connected to the frame, and the other side edge of each flexible anti-detachment part is connected to the upper surface of each optical film assembly.

[0006] In one embodiment, at least two connection steps are provided on the inner wall of the frame close to each installation cavity, and each flexible anti-detachment part is connected to each connection step.

[0007] In one embodiment, each connection step includes a connection surface and a limiting surface connected to each other. Each flexible anti-detachment part is at least partially connected to the connection surface, and the edge of each flexible anti-detachment part is in contact with or adjacent to the limiting surface; the connection surface is perpendicular to the limiting surface; the connection surface is parallel to the bottom plate.

[0008] In one embodiment, the flexible anti - detachment member is rectangular; or the connecting step is rectangular; or the flexible anti - detachment member includes a first pressing strip, a second pressing strip, a third pressing strip and a fourth pressing strip, and the connecting step includes a first step, a second step, a third step and a fourth step. The first pressing strip is connected to the first step, the second pressing strip is connected to the second step, the third pressing strip is connected to the third step, and the fourth pressing strip is connected to the fourth step.

[0009] In one embodiment, the first pressing strip and the third pressing strip are parallel and oppositely arranged, and the ends of the first pressing strip and the third pressing strip are perpendicularly connected to the second pressing strip; the first pressing strip, the second pressing strip and the third pressing strip are integrally formed; the ends of the first pressing strip and the third pressing strip away from the second pressing strip are adjacent to the fourth pressing strip, and the second pressing strip and the fourth pressing strip are parallel and oppositely arranged; the first pressing strip and the third pressing strip are parallel and oppositely arranged, one end of the first pressing strip and the third pressing strip is perpendicularly connected to the second pressing strip, and the other end of the first pressing strip and the third pressing strip is perpendicularly connected to the fourth pressing strip; the first pressing strip, the second pressing strip, the third pressing strip and the fourth pressing strip are integrally formed.

[0010] In one embodiment, each of the optical film assemblies includes a reflective film, a light guide plate and an optical film. The reflective film is disposed on the bottom plate, the light guide plate is disposed on the reflective film, the optical film is disposed on the light guide plate, and the flexible anti - detachment member is connected to the upper surface of the optical film.

[0011] In one embodiment, the frame body includes a frame border and at least one spacer beam. The frame border is connected to the periphery of the bottom plate, the spacer beam is connected to the bottom plate, both ends of the spacer beam are connected to the inner wall of the frame border, and the spacer beam separates the two mounting cavities.

[0012] In one embodiment, each of the flexible anti - detachment members is a foam adhesive or a PET adhesive strip.

[0013] In one embodiment, the thickness of each of the flexible anti - detachment members is 0.2 mm to 1.0 mm.

[0014] The present utility model further relates to a display device, including the above - mentioned backlight module without a middle iron frame for preventing foreign objects.

[0015] In the backlight module of the present utility model, each optical film group is correspondingly installed in each installation cavity. One side of each flexible anti-disengagement member is connected to the frame body, and the other side is connected to the optical film assembly. By using the flexible anti-disengagement member to fix the optical film assembly, not only the labor cost and material cost are low, but also the phenomenon of chip dropping or foreign object falling caused by snap-fastening between the lower iron frame and the middle frame in the prior art is avoided, thereby improving the product quality. 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 should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic cross-sectional structure diagram of the backlight module according to the first embodiment of the present utility model.

[0018] Figure 2 It is a schematic cross-sectional structure diagram of the carrier shell according to the first embodiment of the present utility model.

[0019] Figure 3 It is a schematic disassembled structure diagram of the backlight module according to the first embodiment of the present utility model.

[0020] Explanation of the reference numerals in the drawings: installation cavity - 101; carrier shell - 11; bottom plate - 111; frame body - 112; frame border - 112a; spacer beam - 112b; connection step - 1121; connection surface - 11211; limiting surface - 11212; optical film assembly - 12; reflection film - 121; light guide plate - 122; flexible anti-disengagement member - 13.

[0021] The realization, functional features and advantages of the object of the present utility model will be further described in conjunction with the embodiments and with reference to the drawings. Detailed Embodiments

[0022] The following will describe in detail specific embodiments of the present utility model with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the description of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0023] In the description of the present utility model, unless otherwise clearly specified and defined, terms such as "arranged", "installed", "connected", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is habitually placed during use. It is only for the convenience of description and simplification of the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0025] Terms such as "first", "second", "third", etc. are only used to distinguish elements with similar attributes, rather than indicating or implying relative importance or a specific order.

[0026] The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion. In addition to the listed elements, it may also include other elements not explicitly listed.

[0027] The first embodiment

[0028] As Figures 1 to 3 shown, the backlight module without an iron frame for preventing foreign objects includes a carrier shell 11, at least two optical film assemblies 12, and at least two flexible anti-detachment members 13. The carrier shell 11 includes a bottom plate 111 and a frame body 112 connected to the bottom plate 111. At least two installation cavities 101 are formed between the frame body 112 and the bottom plate 111. Each optical film assembly 12 is correspondingly installed in each installation cavity 101. Each flexible anti-detachment member 13 is correspondingly arranged with each installation cavity 101. One side edge of each flexible anti-detachment member 13 is connected to the frame body 112, and the other side edge of each flexible anti-detachment member 13 is connected to the upper surface of each optical film assembly 12.

[0029] In the backlight module of the present utility model, each optical film group is correspondingly installed in each installation cavity 101. One side of each flexible anti-detachment member 13 is connected to the frame body 112, and the other side is connected to the optical film assembly 12. By using the flexible anti-detachment member 13 to fix the optical film assembly 12, not only the labor cost and material cost are low, but also the phenomenon of chip shedding or foreign object dropping caused by the snap-fastening between the lower iron frame and the middle frame in the prior art is avoided, improving the product quality.

[0030] Preferably, at least two connecting steps 1121 are provided on the inner wall of the frame body 112 close to each installation cavity 101, and each flexible anti-disengagement member 13 is connected to each connecting step 1121; each connecting step 1121 includes a connecting surface 11211 and a limiting surface 11212 that are connected to each other. At least part of each flexible anti-disengagement member 13 is connected to the connecting surface 11211. The connecting surface 11211 is perpendicular to the limiting surface 11212, and the connecting surface 11211 is parallel to the bottom plate 111.

[0031] In another preferred embodiment, the edge of each flexible anti-disengagement member 13 is adjacent to the limiting surface 11212.

[0032] Preferably, the flexible anti-disengagement member 13 is rectangular, and the connecting step 1121 is rectangular; or the flexible anti-disengagement member 13 is arc-shaped, and the connecting step 1121 is arc-shaped, which is convenient for the installation and pasting of the flexible anti-disengagement member 13, but is not limited thereto.

[0033] Preferably, two flexible anti-disengagement members 13 are provided, and the two flexible anti-disengagement members 13 are arranged oppositely. One flexible anti-disengagement member 13 fixes one end of the optical film assembly 12, and the other flexible anti-disengagement member fixes the other end of the optical film assembly 12.

[0034] Preferably, each optical film assembly 12 includes a reflective film 121, a light guide plate 122, and an optical film. The reflective film 121 is arranged on the bottom plate 111, the light guide plate 122 is arranged on the reflective film 121, the optical film is arranged on the light guide plate 122, and the flexible anti-disengagement member 13 is connected to the upper surface of the optical film.

[0035] Preferably, the frame body 112 includes a frame 112a and at least one spacer beam 112b. The frame 112a is connected to the periphery of the bottom plate 111, the spacer beam 112b is connected to the bottom plate 111, and both ends of the spacer beam 112b are connected to the inner wall of the frame 112a. The spacer beam 112b separates the two installation cavities 101.

[0036] Preferably, each flexible anti-disengagement member 13 is a foam adhesive or a PET adhesive strip, and the thickness of each flexible anti-disengagement member 13 is 0.2 mm to 1.0 mm, preferably 0.2 mm, 0.5 mm or 1 mm, etc., but is not limited thereto.

[0037] Second Embodiment

[0038] The backlight module of this embodiment is substantially the same in structure as the backlight module of the first embodiment, except that the structure of the flexible anti-disengagement member 13 is different.

[0039] Specifically, the flexible anti-disengagement member 13 includes a first pressing strip, a second pressing strip, a third pressing strip, and a fourth pressing strip. The connecting step 1121 includes a first step, a second step, a third step, and a fourth step. The first pressing strip is connected to the first step, the second pressing strip is connected to the second step, the third pressing strip is connected to the third step, and the fourth pressing strip is connected to the fourth step.

[0040] Preferably, the first pressing strip and the third pressing strip are parallel and oppositely arranged. The end portions of the first pressing strip and the third pressing strip are respectively perpendicularly connected to the second pressing strip. The first pressing strip, the second pressing strip, and the third pressing strip are integrally formed.

[0041] In another preferred embodiment, the first pressing strip and the third pressing strip are parallel and oppositely arranged, the second pressing strip and the fourth pressing strip are parallel and oppositely arranged. The end portions of the first pressing strip and the third pressing strip away from the second pressing strip are adjacent to the fourth pressing strip, that is, the first pressing strip, the second pressing strip, the third pressing strip, and the fourth pressing strip are respectively arranged at intervals.

[0042] In another preferred embodiment, the first pressing strip and the third pressing strip are parallel and oppositely arranged. One end portion of the first pressing strip and one end portion of the third pressing strip are perpendicularly connected to the second pressing strip, and the other end portion of the first pressing strip and the other end portion of the third pressing strip are perpendicularly connected to the fourth pressing strip. The first pressing strip, the second pressing strip, the third pressing strip, and the fourth pressing strip are integrally formed.

[0043] The present utility model also relates to a display device, including a backlight module with a non-ferrous iron frame for preventing foreign objects. The display device is, for example, a high-end in-vehicle instrument, an in-vehicle central control display, an in-vehicle driving recorder, an in-vehicle DVD navigation, an in-vehicle integrated display on the driver's console, an in-vehicle streaming media rearview mirror, a headrest display for an automobile seat, or an industrial control medical device, etc., but is not limited thereto.

[0044] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the appended claims.

Claims

1. A backlight module without an iron frame for preventing foreign objects, characterized in that, It includes a carrier shell (11), at least two optical film components (12) and at least two flexible anti - detachment members (13). The carrier shell (11) includes a bottom plate (111) and a frame body (112) connected to the bottom plate (111). At least two installation cavities (101) are formed between the frame body (112) and the bottom plate (111). Each of the optical film components (12) is correspondingly installed in each of the installation cavities (101). Each of the flexible anti - detachment members (13) is correspondingly arranged with each of the installation cavities (101). One side edge of each of the flexible anti - detachment members (13) is connected to the frame body (112), and the other side edge of each of the flexible anti - detachment members (13) is connected to the upper surface of each of the optical film components (12).

2. The backlight module without an iron frame for preventing foreign objects as described in claim 1, wherein At least two connecting steps (1121) are provided on the inner wall of the frame body (112) close to each of the installation cavities (101), and each of the flexible anti - detachment members (13) is connected to each of the connecting steps (1121).

3. The backlight module without an iron frame for preventing foreign objects according to claim 2, wherein, It includes at least one of the following: Each of the connecting steps (1121) includes a connecting surface (11211) and a limiting surface (11212) connected to each other. At least a part of each of the flexible anti - detachment members (13) is connected to the connecting surface (11211), and the edge of each of the flexible anti - detachment members (13) is in contact with or adjacent to the limiting surface (11212). The connecting surface (11211) is perpendicular to the limiting surface (11212). The connecting surface (11211) is parallel to the bottom plate (111).

4. The backlight module without an iron frame for preventing foreign objects according to claim 2, wherein It includes at least one of the following: The flexible anti - detachment member (13) is rectangular; The connecting step (1121) is rectangular; The flexible anti - detachment member (13) includes a first pressing strip, a second pressing strip, a third pressing strip and a fourth pressing strip. The connecting step (1121) includes a first step, a second step, a third step and a fourth step. The first pressing strip is connected to the first step, the second pressing strip is connected to the second step, the third pressing strip is connected to the third step, and the fourth pressing strip is connected to the fourth step.

5. The backlight module without an iron frame for preventing foreign objects according to claim 4, characterized in that It includes at least one of the following: The first pressing strip and the third pressing strip are parallel and oppositely arranged, and the ends of the first pressing strip and the third pressing strip are perpendicularly connected to the second pressing strip; The first pressing strip, the second pressing strip and the third pressing strip are integrally formed; The ends of the first pressing strip and the third pressing strip away from the second pressing strip are adjacent to the fourth pressing strip. The second pressing strip and the fourth pressing strip are parallel and oppositely arranged; The first pressing strip and the third pressing strip are parallel and oppositely arranged. One end of the first pressing strip and the third pressing strip is perpendicularly connected to the second pressing strip, and the other end of the first pressing strip and the third pressing strip is perpendicularly connected to the fourth pressing strip; The first pressing strip, the second pressing strip, the third pressing strip and the fourth pressing strip are integrally formed.

6. The backlight module without an iron frame for preventing foreign objects as described in claim 1, wherein, Each of the optical film assemblies (12) includes a reflective film (121), a light guide plate (122), and an optical film. The reflective film (121) is disposed on the bottom plate (111), the light guide plate (122) is disposed on the reflective film (121), the optical film is disposed on the light guide plate (122), and the flexible anti-disengagement member (13) is connected to the upper surface of the optical film.

7. The backlight module without an iron frame for preventing foreign objects as described in claim 1, characterized in that, The frame body (112) includes a frame edge (112a) and at least one spacer beam (112b). The frame edge (112a) is connected to the periphery of the bottom plate (111), the spacer beam (112b) is connected to the bottom plate (111), two ends of the spacer beam (112b) are connected to the inner wall of the frame edge (112a), and the spacer beam (112b) separates the two mounting cavities (101).

8. The backlight module without an iron frame for preventing foreign objects according to any one of claims 1 to 7, characterized in that Each of the flexible anti-disengagement members (13) is a foam adhesive or a PET adhesive strip.

9. The backlight module without an iron frame for preventing foreign objects according to any one of claims 1 to 7, characterized in that, The thickness of each of the flexible anti-disengagement members (13) is 0.2 mm to 1.0 mm.

10. A display device, characterized in that, It includes a backlight module without a middle iron frame for preventing foreign objects according to any one of claims 1 to 9.

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