Backlight structure for preventing light leakage of backlight buckle

Abstract

The utility model discloses a backlight structure for preventing light leakage of a backlight buckle, which comprises a backlight frame, an optical component and a shading film, the backlight frame is provided with a limiting cavity, and one side wall of the backlight frame is provided with a first limiting clamping hole; the optical assembly is arranged in the limiting cavity, the optical assembly comprises a backlight film material and a light guide plate, the backlight film material is provided with a first limiting buckle, the first limiting buckle extends into the first limiting clamping hole, and a reflecting film is arranged on one side wall, close to the first limiting clamping hole, of the first limiting buckle and the light guide plate; the shading film is attached to the backlight frame and covers the first limiting clamping hole. Reflecting films are arranged on the first limiting buckle and the side wall, close to the first limiting clamping hole, of the light guide plate to replace white glue to reflect light rays so as to reduce loss of the light rays and improve the brightness of the backlight source, and meanwhile the first limiting clamping hole is covered with a shading film which only plays a shading role so as to play a role in preventing light leakage of the backlight buckle.

Description

Technical Field

[0001] The utility model relates to the technical field of display, in particular to a backlight structure for preventing backlight buckles from leaking light. Background Art

[0002] In display modules, a backlight structure is usually used to provide light source for the display of the display module. For example, the current vehicle-mounted display modules are getting bigger and bigger, so the matching backlight structure is also getting bigger and bigger. In order to ensure the reliability of the backlight structure, the larger the backlight structure, the more complicated its internal structure design will be. Among them, various buckle structures need to be set in the backlight structure to ensure the installation stability of each component. However, after the buckle is set, there will be the problem of buckle light leakage.

[0003] However, the buckle positions of the existing backlight structure are usually covered with black and white glue to prevent light leakage at the backlight buckle positions. However, since the black and white glue is compounded by white glue and black glue and cut according to a 1:1 ratio, the white glue surface not only reflects light, but also transmits light, causing the light to be emitted from the side of the white glue, thereby causing light leakage at the side of the black and white glue, that is, causing light leakage at the backlight buckle positions. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a backlight structure that prevents light leakage from a backlight buckle.

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

[0006] A backlight structure for preventing light leakage from a backlight buckle, comprising: a backlight frame, an optical component and a shading film, wherein a limit cavity is provided on the backlight frame, and a first limit card hole is provided on a side wall of the backlight frame, and the first limit card hole is communicated with the limit cavity; the optical component is arranged in the limit cavity, the optical component comprises a backlight film material and a light guide plate, the backlight film material and the light guide plate are stacked, a first limit card buckle is provided on a side edge of the backlight film material close to the first limit card hole, the first limit card buckle extends into the first limit card hole, and a reflective film is provided on a side wall of the first limit card buckle and the light guide plate close to the first limit card hole; the shading film is attached to the backlight frame, and the shading film covers the first limit card hole.

[0007] In one embodiment, a plurality of the first position-limiting holes are provided, and a plurality of the first position-limiting buckles are also provided, and each of the first position-limiting buckles extends into each of the first position-limiting holes respectively.

[0008] In one embodiment, a second limit buckle is provided on a side of the light guide plate close to the first limit buckle hole, the second limit buckle extends into the first limit buckle hole, and a reflective film is provided on a side wall of the second limit buckle close to the first limit buckle hole.

[0009] In one embodiment, the backlight film material includes an upper brightness enhancement film, a lower brightness enhancement film and a diffusion film, and the upper brightness enhancement film, the lower brightness enhancement film, the diffusion film and the light guide plate are stacked in sequence toward the bottom of the limiting cavity.

[0010] In one of the embodiments, the backlight film further includes a reflective sheet, and the reflective sheet is disposed at the bottom of the limiting cavity.

[0011] In one embodiment, the shading film is a completely black shading film.

[0012] In one of the embodiments, an alignment structure is disposed on the back side of the backlight frame, and the alignment structure is used for attaching and aligning the light-shielding film.

[0013] In one of the embodiments, an LED light bar is further included, wherein the LED light bar is arranged on a side wall of the limiting cavity, and the LED lights on the LED light bar face the light guide plate.

[0014] In one of the embodiments, a second limiting hole is further formed on the backlight frame, and a limiting protrusion is provided on a side of the light guide plate facing the second limiting hole, and the limiting protrusion extends into the second limiting hole.

[0015] In one embodiment, a plurality of the second limit clamping holes are provided.

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

[0017] The backlight structure of the utility model for preventing the backlight buckle from leaking light is achieved by opening a first limiting card hole on the backlight frame, and setting a first limiting card hole on the backlight film material, and allowing the first limiting card hole to extend into the first limiting card hole, thereby forming an installation limit for the backlight film material and the light guide plate; at the same time, a reflective film is set on a side wall of the first limiting card hole and the light guide plate close to the first limiting card hole, and the reflective film is set to replace the white glue in the traditional black and white glue to reflect light, so as to reduce the loss of light and improve the brightness of the backlight light source. At the same time, the first limiting card hole is covered by a shading film that only plays a shading role, so as to prevent the backlight buckle from leaking light. 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 It is a schematic structural diagram of a backlight structure for preventing light leakage from a backlight buckle in one embodiment of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of removing the light-shielding film from the backlight structure of the backlight buckle to prevent light leakage;

[0021] Figure 3 for Figure 2 A schematic diagram of a partially enlarged structure of a backlight structure for preventing light leakage from a backlight buckle;

[0022] Figure 4 It is a schematic diagram of a partially enlarged structure of a backlight structure at position B for preventing light leakage from a backlight buckle in one embodiment of the present utility model. 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] Please combine Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a backlight structure for preventing backlight buckle from leaking light comprises: a backlight frame 100, an optical component and a light shielding film 200, a limited cavity is provided on the backlight frame 100, and a first limited card hole 110 is provided on a side wall of the backlight frame 100, and the first limited card hole 110 is connected to the limited cavity; the optical component is arranged in the limited cavity, and the optical component comprises a backlight film material 300 and a light guide plate 400, and the backlight film material 300 and the light guide plate 400 are connected to each other. 00 stacked arrangement, a first limit buckle 310 is arranged on one side of the backlight film material 300 close to the first limit card hole 110, the first limit buckle 310 extends into the first limit card hole 110, and a reflective film is arranged on the side wall of the first limit buckle 310 and the light guide plate 400 close to the first limit card hole 110; the shading film 200 is attached to the backlight frame 100, and the shading film 200 covers the first limit card hole 110.

[0025] It should be noted that the limiting cavity is used to place the optical component, and the optical component is limited by the limiting cavity. In order to further improve the installation stability of the optical component, a first limiting card hole 110 is opened on the backlight frame 100, and a first limiting buckle 310 is set on the backlight film 300, and the first limiting buckle 310 extends into the first limiting card hole 110, thereby playing a role in limiting and fixing the backlight film 300 and the light guide plate 400. Furthermore, the first limit card hole 110 and the limit card buckle of the optical component form a backlight card buckle in the backlight structure. In order to prevent the backlight card buckle from leaking light, a reflective film is provided on a side wall of the first limit card hole 110 and the light guide plate 400 close to the first limit card hole 110, and the white glue in the original black and white glue structure is replaced by the reflective film to reflect light, so that the light is reflected back to the display area, thereby reducing the loss of light and improving the brightness of the backlight source of the backlight structure; at the same time, a layer of shading film 200 is covered on the first limit card hole 110, and the shading film 200 here only plays a role of shading, thereby preventing light leakage; in addition, since the first limit card hole 110 and the light guide plate 400 are provided with a reflective film (for example Figure 3 The dotted frame area C, but not limited to the dotted frame area C, the attachment area of ​​the reflective film can also be larger than the dotted frame area C), so it will not be affected by the shading film 200 and a dark area will appear. At the same time, the shading film 200 does not have the problem of transmitting light, so the risk of light leakage from the backlight buckle can be prevented.

[0026] Preferably, a plurality of first position-limiting holes 110 are provided, and a plurality of first position-limiting buckles 310 are also provided, and each first position-limiting buckle 310 extends into each first position-limiting hole 110. In this way, the installation stability of the optical component can be improved.

[0027] Furthermore, a second limit buckle 410 is provided on one side of the light guide plate 400 near the first limit hole 110. The second limit buckle 410 extends into the first limit hole 110, and a reflective film is provided on one side wall of the second limit buckle 410 near the first limit hole 110. Since the light guide plate 400 is thicker and harder than the backlight film material 300, in order to further improve the installation stability of the optical component, a second limit buckle 410 is also provided on the light guide plate 400; at the same time, a reflective film (e.g. Figure 3 The dotted frame area C, but not limited to the dotted frame area C, the attachment area of ​​the reflective film can also be larger than the dotted frame area C, and mainly needs to cover the dotted frame area C), and the reflective film replaces the white glue in the traditional black and white glue to reflect the light of the light guide plate 400 back to the display area.

[0028] Furthermore, the backlight film material 300 includes an upper brightness enhancement film, a lower brightness enhancement film and a diffusion film, and the upper brightness enhancement film, the lower brightness enhancement film, the diffusion film and the light guide plate 400 are stacked in sequence toward the bottom of the limiting cavity. The upper brightness enhancement film, the lower brightness enhancement film and the diffusion film make the brightness of the light of the backlight structure higher and more uniform.

[0029] In one embodiment, the backlight film 300 further includes a reflective sheet, which is disposed at the bottom of the limiting cavity to reflect light back and reduce light loss.

[0030] In one embodiment, the light shielding film 200 is a completely black light shielding film 200. That is, the light shielding film 200 is a completely black light shielding film 200, which only plays a role of shielding, thereby preventing the risk of light leakage from the backlight buckle. In addition, the light shielding film 200 can also be other darker light shielding films.

[0031] See also Figure 2 As shown, in one embodiment, a positioning structure 500 is provided on the back of the backlight frame 100, and the positioning structure 500 is used for attaching and aligning the light shielding film 200. For example, the positioning structure 500 can be an alignment line, and the positioning structure 500 is used to facilitate the alignment and attachment of the light shielding film 200 to prevent the light shielding film 200 from being attached in an offset position.

[0032] Specifically, the backlight structure further includes an LED light bar, which is disposed on a side wall of the limiting cavity, and the LED lights on the LED light bar face the light guide plate 400. The LED light bar provides a light source.

[0033] See also Figure 4 As shown, in one embodiment, in order to further improve the installation stability of the optical component, a second limit card hole 120 is further provided on the backlight frame 100, and a limit block 420 is provided on the side of the light guide plate 400 facing the second limit card hole 120, and the limit block 420 extends into the second limit card hole 120. The second limit card hole 120 is located on the opposite side of the first limit card hole 110, and a layer of light shielding film 200 is also required to be covered in the second limit card hole 120, and the light shielding film 200 plays a role in preventing light leakage. Preferably, a plurality of second limit card holes 120 are provided, and similarly, a plurality of limit blocks 420 are also provided.

[0034] 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 structure for preventing backlight buckle light leakage, characterized in that: include: A backlight frame, wherein a limiting cavity is provided on the backlight frame, and a first limiting hole is provided on a side wall of the backlight frame, wherein the first limiting hole is in communication with the limiting cavity; An optical component, wherein the optical component is disposed in the limiting cavity, the optical component comprises a backlight film material and a light guide plate, the backlight film material and the light guide plate are stacked, a first limiting buckle is disposed on one side of the backlight film material close to the first limiting card hole, the first limiting buckle extends into the first limiting card hole, and a reflective film is disposed on one side wall of the first limiting buckle and the light guide plate close to the first limiting card hole; and A light-shielding film is attached to the backlight frame and covers the first limit-holding hole.

2. The backlight structure for preventing backlight buckle light leakage according to claim 1, characterized in that: A plurality of the first position-limiting holes are provided, and a plurality of the first position-limiting buckles are also provided, and each of the first position-limiting buckles extends into each of the first position-limiting holes respectively.

3. The backlight structure for preventing backlight buckle light leakage according to claim 2, characterized in that: A second limit buckle is arranged on one side of the light guide plate close to the first limit buckle hole, the second limit buckle extends into the first limit buckle hole, and a reflective film is arranged on one side wall of the second limit buckle close to the first limit buckle hole.

4. The backlight structure for preventing backlight buckle light leakage according to claim 1, characterized in that: The backlight film material comprises an upper brightness enhancement film, a lower brightness enhancement film and a diffusion film, and the upper brightness enhancement film, the lower brightness enhancement film, the diffusion film and the light guide plate are stacked in sequence in a direction close to the bottom of the limiting cavity.

5. The backlight structure for preventing backlight buckle light leakage according to claim 1, characterized in that: The backlight film material further includes a reflective sheet, and the reflective sheet is arranged at the bottom of the limiting cavity.

6. The backlight structure for preventing backlight buckle light leakage according to claim 1, characterized in that: The shading film is a completely black shading film.

7. The backlight structure for preventing backlight buckle light leakage according to claim 1, characterized in that: The back side of the backlight frame is provided with an alignment structure, and the alignment structure is used for attaching and aligning the light-shielding film.

8. The backlight structure for preventing backlight buckle light leakage according to claim 1, characterized in that: It also includes an LED light bar, which is arranged on a side wall of the limiting cavity, and the LED lights on the LED light bar face the light guide plate.

9. The backlight structure for preventing backlight buckle light leakage according to claim 1, characterized in that: A second position-limiting hole is further provided on the backlight frame, and a position-limiting protrusion is provided on a side of the light guide plate facing the second position-limiting hole, and the position-limiting protrusion extends into the second position-limiting hole.

10. The backlight structure for preventing backlight buckle light leakage according to claim 9, characterized in that: A plurality of the second limit clamping holes are provided.

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