Backlight source

Abstract

The utility model discloses a backlight source which comprises a frame, a reflector plate, a light guide plate, a diffusion film, a lower brightness enhancement film, a light bar, FPC lamp glue, an upper brightness enhancement film and shading glue. The reflector plate is arranged at the inner bottom of the frame; the light guide plate is pressed on the top of the reflector plate; the diffusion film is arranged at the top of the light guide plate; the two ends of the diffusion film are coated with shading films; the lower bright enhancement film is arranged at the top of the diffusion film; film lugs are arranged on the two sides of one end of the lower brightness enhancement film; the light bar is arranged at one end of the light guide plate; the FPC lamp glue is arranged at the top of the lamp strip; glue lugs are arranged at the two ends of the FPC lamp glue. The glue lug is adhered to the top of the film lug; the upper brightness enhancement film is arranged at the top of the lower brightness enhancement film; the shading glue is arranged on the top of the side edge of the upper brightness enhancement film and the top of the side edge of the frame.

Description

Technical Field

[0001] The utility model belongs to the technical field of backlight sources and specifically discloses a backlight source. Background Art

[0002] The backlight is a light source located behind the LCD. Its luminous effect will directly affect the visual effect of the LCD module. The LCD itself does not emit light, it displays graphics or the result of its light modulation. The backlight is mainly composed of a light source, a light guide plate, an optical film, and structural parts.

[0003] The optical film is usually composed of a reflective film, a diffusion film and a brightness enhancement film, and some brightness enhancement films are divided into a lower brightness enhancement film and an upper brightness enhancement film. Usually, the films, especially the diffusion film, the lower brightness enhancement film and the upper brightness enhancement film, are simply contacted and stacked with each other, resulting in insufficient tightness of the connection, and there is a risk of displacement and loosening in the event of impact. Utility Model Content

[0004] The utility model provides a backlight source to solve the above technical problems.

[0005] The solution adopted by the utility model to achieve its technical effect is:

[0006] A backlight source comprises a frame, a reflective sheet, a light guide plate, a diffusion film, a lower light-enhancing film, a light bar, an FPC light glue, an upper light-enhancing film and a light-shielding glue; the reflective sheet is arranged at the inner bottom of the frame; the light guide plate is pressed on the top of the reflective sheet; the diffusion film is arranged on the top of the light guide plate; both ends of the diffusion film are covered with light-shielding film; the lower light-enhancing film is arranged on the top of the diffusion film; film ears are arranged on both sides of one end of the lower light-enhancing film; the light bar is arranged at one end of the light guide plate; the FPC light glue is arranged on the top of the light bar; glue ears are arranged on both ends of the FPC light glue; the glue ears are bonded to the top of the film ears; the upper light-enhancing film is arranged on the top of the lower light-enhancing film; the light-shielding glue is arranged on the top of the side of the upper light-enhancing film and the top of the side of the frame.

[0007] Preferably, notches are provided on both sides of the same end of the diffusion film and the upper brightness enhancement film; the film ears extend through the notches to be bonded to the adhesive ears.

[0008] Preferably, a shading strip is provided at one end of the diffusion film; the shading strip is arranged adjacent to the FPC light glue; and the shading film at one end is coated on the outside of the shading strip.

[0009] Preferably, it also includes a connecting film; the connecting film is wrapped around the bottom of one end of the diffusion film and the top of one end of the upper brightness enhancement film; the connecting film is wrapped around the outer side of the shading film located outside the shading strip.

[0010] Preferably, one end of the frame is provided with an inwardly recessed positioning structure; one end of the reflective sheet, the light guide plate, the diffusion film, the lower brightness enhancement film and the upper brightness enhancement film are all provided with a corresponding inwardly recessed structure.

[0011] The beneficial effects of the utility model are as follows: 1. The FPC lamp glue is connected to the fixed film ear through the glue ear, thereby stabilizing the lower light-enhancing film, so that the lower light-enhancing film will not be easily displaced and loosened in the frame. 2. The light-shielding film is arranged at both ends of the diffusion film to prevent light leakage, and the cost of using glue film to shield light is lower than that of spray paint to shield light. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A top view of a backlight source disclosed in an embodiment of the utility model;

[0013] Figure 2 A top view of the backlight source shading adhesive disclosed in an embodiment of the utility model;

[0014] Figure 3 This is a top view of the backlight source without the frame, light shielding glue and connecting film disclosed in the embodiment of the utility model;

[0015] Figure 4 A schematic diagram of a diffusion membrane disclosed in an embodiment of the utility model;

[0016] Figure 5 A schematic diagram of a lower brightness enhancement film disclosed in an embodiment of the utility model;

[0017] Figure 6 A schematic diagram of an upper brightness enhancement film disclosed in an embodiment of the utility model;

[0018] Figure 7 A schematic diagram of the FPC light-shielding adhesive and the light bar disclosed in the embodiment of the utility model;

[0019] Figure 8 for Figure 2 A magnified schematic diagram of area A;

[0020] Fig. 9 for Figure 3 Enlarged schematic diagram of area B;

[0021] Fig.10 It is a schematic diagram of a partial explosion of a backlight source disclosed in an embodiment of the utility model.

[0022] Label description: 1-frame, 2-reflector, 3-light guide plate, 4-diffusion film, 5-lower light enhancement film, 6-light strip, 7-FPC light glue, 8-upper light enhancement film, 9-light-shielding glue, 10-light-shielding film, 11-film ear, 12-glue ear, 13-light-shielding strip, 14-connecting film, 15-positioning structure. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. It should be noted that when an element is referred to as "fixed on" or "set on" another element, it can be directly on the other element or there may be a centering element at the same time. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there may be a centering element at the same time. When an element is referred to as being "fixedly connected to" another element, it can be a common fixed connection method such as welding, bolting or gluing.

[0024] Please refer to Figure 1-10 In a preferred embodiment of the utility model, a backlight source is disclosed, comprising a frame 1, a reflective sheet 2, a light guide plate 3, a diffusion film 4, a lower light-enhancing film 5, a light bar 6, an FPC light glue 7, an upper light-enhancing film 8 and a light-shielding glue 9; the reflective sheet 2 is arranged at the inner bottom of the frame 1; the light guide plate 3 is pressed on the top of the reflective sheet 2; the diffusion film 4 is arranged on the top of the light guide plate 3; both ends of the diffusion film 4 are covered with light-shielding films 10; the lower light-enhancing film 5 is arranged on the top of the diffusion film 4; film ears 11 are arranged on both sides of one end of the lower light-enhancing film 5; the light bar 6 is arranged at one end of the light guide plate 3; the FPC light glue 7 is arranged on the top of the light bar 6; glue ears 12 are arranged on both ends of the FPC light glue 7; the glue ears 12 are bonded to the top of the film ears 11; the upper light-enhancing film 8 is arranged on the top of the lower light-enhancing film 5; the light-shielding glue 9 is arranged on the side top of the upper light-enhancing film 8 and the side top of the frame 1.

[0025] Specifically, notches are provided on both sides of the same end of the diffusion film 4 and the upper brightness enhancement film 8 ; the film ears 11 extend through the notches to be bonded to the adhesive ears 12 .

[0026] Specifically, a shading strip 13 is provided at one end of the diffusion film 4; the shading strip 13 is arranged adjacent to the FPC light glue 7; and the shading film 10 at one end is covered on the outside of the shading strip 13. The shading strip 13 cooperates with the shading film 10 to effectively prevent light leakage from the FPC light glue 7.

[0027] Specifically, it also includes a connecting film 14; the connecting film 14 is wrapped around the bottom of one end of the diffusion film 4 and the top of one end of the upper brightness enhancement film 8; the connecting film 14 is wrapped around the outer side of the light shielding film 10 located outside the light shielding strip 13. The connecting film 14 makes the diffusion film 4 and the upper brightness enhancement film 8 more tightly connected, and the lower brightness enhancement film 5 is more firmly sandwiched between the two, so that the diffusion film 4, the lower brightness enhancement film 5 and the upper brightness enhancement film 8 are more firmly integrated in the frame, and the film sheets are not easily loosened or misaligned.

[0028] Specifically, one end of the frame 1 is provided with an inwardly recessed positioning structure 15; one end of the reflective sheet 2, the light guide plate 3, the diffusion film 4, the lower brightness enhancement film 5 and the upper brightness enhancement film 8 are all provided with corresponding inwardly recessed structures.

[0029] It can be seen from the above description that the internal structure of the utility model is stable and each diaphragm will not be easily displaced.

[0030] The preferred embodiments of the present invention are described in detail above in conjunction with the drawings in the specification. It should be noted that the protection scope of the present invention includes but is not limited to the above embodiments. The specific structures disclosed in the drawings in the specification are only preferred embodiments of the present invention. Technical personnel in the field can also develop other embodiments on this basis. Any simple deformation or equivalent substitution that does not deviate from the innovative concept of the present invention is covered by the present invention and belongs to the protection scope of the present invention.

Claims

1. A backlight source, characterized in that: include; frame; A reflective sheet; the reflective sheet is arranged at the inner bottom of the frame; Light guide plate; The light guide plate is pressed on the top of the reflective sheet; Diffusor membrane; The diffusion film is arranged on the top of the light guide plate; both ends of the diffusion film are covered with light shielding films; A lower brightness enhancement film; the lower brightness enhancement film is arranged on the top of the diffusion film; film ears are arranged on both sides of one end of the lower brightness enhancement film; A light bar; the light bar is arranged at one end of the light guide plate; FPC light glue; The FPC light glue is arranged on the top of the light bar; glue ears are arranged at both ends of the FPC light glue; The adhesive ear is bonded to the top of the membrane ear; An upper brightness enhancement film; the upper brightness enhancement film is arranged on the top of the lower brightness enhancement film; Light-shielding glue; the light-shielding glue is arranged on the top of the side edge of the upper brightness enhancement film and the top of the side edge of the frame.

2. A backlight source according to claim 1, characterized in that: Notches are arranged on both sides of the same end of the diffusion film and the upper brightness enhancement film; the film ears extend through the notches and are bonded to the adhesive ears.

3. The backlight source according to claim 1, characterized in that: A shading strip is arranged at one end of the diffusion film; the shading strip is arranged adjacent to the FPC light glue; and the shading film at one end is covered on the outside of the shading strip.

4. A backlight source according to claim 3, characterized in that: It also includes a connecting film; the connecting film is wrapped around the bottom of one end of the diffusion film and the top of one end of the upper brightness enhancement film; the connecting film is wrapped around the outer side of the shading film located outside the shading strip.

5. The backlight source according to claim 1, characterized in that: One end of the frame is provided with an inwardly recessed positioning structure; one end of the reflector, the light guide plate, the diffusion film, the lower brightness enhancement film and the upper brightness enhancement film are all provided with corresponding inwardly recessed structures.

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