Backlight source structure convenient for product assembly

Abstract

The utility model discloses a backlight source structure convenient for product assembly. The backlight source structure comprises a frame, a sealing ring and a light guide plate assembly, the frame is provided with a mounting groove and a cross-shaped groove; clamping grooves are oppositely formed in the inner wall surface of the mounting groove; the sealing ring is arranged outside the light guide plate assembly in a sleeving mode, and a buckle is arranged outside the sealing ring. The sealing ring is arranged in the mounting groove through the matching of the buckle and the clamping groove; the light guide plate assembly comprises a light guide plate, and a diffusion film and a bright enhancement film which are arranged on the surface of one side of the light guide plate; a connecting convex part is arranged outside the light guide plate; connecting grooves are formed in the positions, corresponding to the connecting protruding parts, of the outer portions of the diffusion film and the bright enhancement film. The diffusion film and the bright enhancement film are arranged on the light emitting surface of the light guide plate through the matching of the connecting groove and the connecting convex part; and the diffusion film and the brightness enhancement film are positioned, so that the diffusion film and the brightness enhancement film cannot move horizontally.

Description

Technical Field

[0001] The utility model relates to the technology of backlight source field, in particular to a backlight source structure which is convenient for product assembly. Background Art

[0002] Liquid crystal displays (LCDs) are widely used in the field of display technology. With the improvement of products and technologies, people's requirements for thinner and more portable electronic products such as mobile phones, PADs, and notebooks are becoming increasingly prominent. As the main component of the above electronic products, LCDs cannot emit light by themselves, so they need a backlight source to achieve the purpose of displaying images.

[0003] The backlight source is mainly composed of a light source, a light guide plate, an optical mold, and structural parts. Among them, the light source mainly includes three types of backlight sources: EL, CCFL and LED; the light guide plate is divided into printing, chemical etching (Etching), precision mechanical engraving (V-cut), photolithography (Stamper), internal diffusion, and hot pressing; the optical molds include brightening films / sheets, diffusion films / sheets, reflective films, and black / white glue; the structural parts mainly include back panels, glue frames, lamp tube racks, aluminum profiles, and aluminum base strips.

[0004] For example, a backlight source assembly structure is used to fix a light source component and a light guide plate, including a lower iron frame and a plastic frame, the plastic frame is buckled on the lower iron frame from the front, at least three sides of the lower iron frame are located inside the plastic frame, and one side of the lower iron frame is located outside the plastic frame, each side of the lower iron frame is provided with a retaining wall, at least one protruding boss is provided on the retaining wall, and a corresponding position on the plastic frame is provided with an avoidance position, the backlight source assembly structure also includes a light source component fixed in the side of the lower iron frame, and a reflective film, a light guide plate, a diffusion film, a lower enhancement film, which are stacked in the lower iron frame from bottom to top. The light guide plate, the diffusion film, the lower light enhancement film, and the upper light enhancement film are stacked in the lower iron frame from bottom to top, and the above film components are laminated in sequence by laminating. Since the front structure of the light guide plate of this backlight source is flat and there is no fixed structure, the film components will move back and forth during the assembly process and become loose. Secondly, the components are easily offset during the laminating process. In addition, the film components are prone to loosening and abnormal noise during the vibration test, resulting in poor quality of the display screen.

[0005] Therefore, it is necessary to study a new technical solution to solve the above problems. Utility Model Content

[0006] In view of this, the present invention aims to solve the deficiencies in the prior art, and its main purpose is to provide a backlight source structure that is easy for product assembly. The diffusion film and the brightness enhancement film are positioned through the structural design and coordination between the frame, the sealing ring and the light guide plate assembly, so that the diffusion film and the brightness enhancement film cannot move horizontally.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A backlight source structure that is convenient for product assembly, comprising a frame, a sealing ring and a light guide plate assembly;

[0009] The frame has a mounting groove for mounting the light guide plate assembly and the sealing ring, and a cross groove for mounting and positioning with the cross protrusion on the matching piece; wherein the inner wall surface of the mounting groove is oppositely provided with a clamping groove;

[0010] The sealing ring is sleeved outside the light guide plate assembly, and a buckle for matching with the card slot is arranged on the outside of the sealing ring; the sealing ring is installed in the installation slot through the cooperation between the buckle and the card slot;

[0011] The light guide plate assembly includes a light guide plate and a diffusion film and a light enhancement film arranged on one side surface of the light guide plate; the light guide plate has a connecting protrusion on the outside; the diffusion film and the light enhancement film are arranged on the light output surface of the light guide plate; the diffusion film and the light enhancement film are both provided with connecting grooves at the corresponding connecting protrusions on the outside; the diffusion film and the light enhancement film are arranged on the light output surface of the light guide plate through the cooperation of the connecting grooves and the connecting protrusions.

[0012] As a preferred embodiment, the cross groove includes a longitudinal groove and a transverse groove, and the longitudinal groove passes through the transverse groove in the vertical direction of the frame; the mating piece has a frame mounting surface, and the frame mounting surface is provided with a cross protrusion; the cross protrusion is arranged along the length extension direction of the mating piece, the frame is arranged on the mating piece, and the cross groove is snap-fitted and fixed on the cross protrusion.

[0013] As a preferred embodiment, the frame is further provided with a first screw mounting hole, and correspondingly, the mating piece is provided with a second screw mounting hole. The frame is provided on the mating piece, and is locked on the mating piece by passing a locking piece through the first screw mounting hole and the second screw mounting hole respectively.

[0014] As a preferred solution, the buckle is integrally injection-molded on the sealing ring, and an avoidance position is provided on the sealing ring corresponding to the connecting protrusion.

[0015] As a preferred solution, the sealing ring is made of chloroprene rubber.

[0016] As a preferred solution, the buckle is provided with a guiding slope to facilitate the squeezing of the buckle and the assembly of the sealing ring.

[0017] As a preferred solution, a notch is further provided on the frame at the side corresponding to the mounting groove to facilitate the subsequent removal of the sealing ring.

[0018] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that it is mainly through the structural design and cooperation between the frame, the sealing ring and the light guide plate assembly, the diffusion film and the light enhancement film are arranged on the light emitting surface of the light guide plate of the light guide plate through the cooperation of the connecting groove and the connecting convex part, so as to position the diffusion film and the light enhancement film, so that the diffusion film and the light enhancement film cannot move horizontally;

[0019] Secondly, the design of the sealing ring can fill the gap between the light guide plate assembly and the installation groove, and can enhance the friction between the light guide plate assembly and the frame, so as to avoid the light guide plate assembly from loosening;

[0020] There is also the design of the cross slot and the first screw mounting hole. When it is assembled on the mating part, the cross slot is used to engage and fix it on the cross protrusion, and then the locking piece is passed through the first screw mounting hole and the second screw mounting hole respectively to lock it on the mating part, performing double locking, thereby improving the overall stability of the frame relative to the mating part.

[0021] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of an embodiment of the utility model;

[0023] Figure 2 It is a cross-sectional view of an embodiment of the utility model;

[0024] Figure 3 It is a front view of the framework of the embodiment of the utility model;

[0025] Figure 4 is a cross-sectional view of a light guide plate assembly according to an embodiment of the present utility model;

[0026] Figure 5 yes Figure 2 A partial enlarged view of the middle A;

[0027] Figure 6 yes Figure 4 A partial enlarged view of point B in the middle;

[0028] Figure 7 It is a schematic diagram of the assembly and application of an embodiment of the utility model;

[0029] Figure 8 It is a rear view of the framework of the embodiment of the utility model;

[0030] Fig. 9 It is a front view of the matching piece of the embodiment of the utility model.

[0031] Description of the accompanying drawings:

[0032] 10. Frame 11. Mounting slot

[0033] 12. Cross groove 121. Longitudinal groove

[0034] 122, transverse groove 13, first screw mounting hole

[0035] 14. Notch 111. Card slot

[0036] 20. Sealing ring 21. Buckle

[0037] 30. Light guide plate assembly 31. Light guide plate

[0038] 32. Diffusion film 33. Brightness enhancement film

[0039] 34. Connecting convex part 35. Connecting concave part

[0040] 40. Matching parts 41. Frame mounting surface

[0041] 42. Cross protrusion 43. Second screw mounting hole. DETAILED DESCRIPTION

[0042] Please refer to Figures 1 to 9 As shown, it shows the specific structure of an embodiment of the utility model.

[0043] In the description of the present invention, it should be noted that directional words such as the terms "up", "down", "front", "back", "left", "right", etc., which indicate directions and positional relationships, are based on the directions or positional relationships shown in the drawings or during normal wearing and use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0044] A backlight source structure which is convenient for product assembly includes a frame 10, a sealing ring 20 and a light guide plate assembly 30.

[0045] The frame 10 has a mounting groove 11 for mounting the light guide plate assembly 30 and the sealing ring 20, and a cross groove 12 for mounting and positioning with the cross protrusion 42 on the mating piece 40; preferably, the cross groove 12 includes a longitudinal groove 121 and a transverse groove 122, and the longitudinal groove 121 passes through the transverse groove 122 along the vertical direction of the frame 10. Preferably, the frame 10 is also provided with a first screw mounting hole 13. Among them, the inner wall surface of the mounting groove 11 is relatively provided with a clamping groove 111; preferably, the frame 10 is also provided with a notch 14 on the side corresponding to the mounting groove 11 to facilitate the removal of the sealing ring 20.

[0046] The sealing ring 20 is sleeved on the outside of the light guide plate assembly 30, and a buckle 21 for matching with the card slot 111 is arranged on the outside of the sealing ring 20; the sealing ring 20 is installed in the installation groove 11 through the cooperation between the buckle 21 and the card slot 111; preferably, the buckle 21 is integrally injection-molded on the sealing ring 20, and an avoidance position (not shown in the figure) is arranged on the sealing ring 20 corresponding to the connecting protrusion 34. Preferably, the buckle 21 has a guiding inclined surface (not shown in the figure). Preferably, the sealing ring 20 is made of chloroprene rubber.

[0047] The light guide plate assembly 30 includes a light guide plate 31 and a diffusion film 32 and a brightness enhancement film 33 arranged on one side surface of the light guide plate 31; the outside of the light guide plate 31 has a connecting protrusion 34; the diffusion film 32 and the brightness enhancement film 33 are arranged on the light emitting surface of the light guide plate 31; the outsides of the diffusion film 32 and the brightness enhancement film 33 are both provided with connecting grooves 35 corresponding to the connecting protrusions 34; the diffusion film 32 and the brightness enhancement film 33 are arranged on the light emitting surface of the light guide plate 31 of the light guide plate 31 through the cooperation of the connecting grooves 35 and the connecting protrusions 34.

[0048] The light guide plate 31 includes a light emitting surface and a light incident surface. The light from the light source enters from the light incident surface and is emitted from the light emitting surface.

[0049] The light guide plate 31 is in the shape of a plate and is made of optical materials such as acrylic or PC. The bottom surface of the light guide plate 31 is printed with light guide points by laser engraving, V-shaped cross grid engraving, and UV screen printing technology to convert the line light source into a surface light source. When placing the diffusion film 32 and the light enhancement film 33, firstly make the connection groove 35 of the diffusion film 32 and the light enhancement film 33 correspond to the connection convex part 34, and then place the diffusion film 32 and the light enhancement film 33 on the light emitting surface, so that the connection convex part 34 positions the diffusion film 32 and the light enhancement film 33, so that the diffusion film 32 and the light enhancement film 33 cannot move horizontally.

[0050] The light guide plate 31 also includes a reflective film (not shown) and a reflective polarizing film (not shown), wherein the reflective polarizing film is used to selectively reflect the light of the light source, so that part of the light of the light source at the full viewing angle can be reused, thereby increasing the brightness. The reflective film is arranged under the light incident surface of the light guide plate 31; and the reflective film and the reflective polarizing film are both provided with connecting grooves 35.

[0051] The mating piece 40 has a frame mounting surface 41, and the frame mounting surface 41 is provided with a cross protrusion 42; the cross protrusion 42 is arranged along the length extension direction of the mating piece 40, the frame 10 is arranged on the mating piece 40, and the cross groove 12 is fixed on the cross protrusion 42. The mating piece 40 is provided with a second screw mounting hole 43, and the frame 10 is arranged on the mating piece 40, and is locked on the mating piece 40 by passing through the first screw mounting hole 13 and the second screw mounting hole 43 respectively through the locking piece. Among them, the mating piece 40 is a machine table of the equipment.

[0052] The design focus of the utility model is that: it is mainly through the structural design and cooperation between the frame, the sealing ring and the light guide plate assembly, the diffusion film and the light enhancement film are arranged on the light emitting surface of the light guide plate of the light guide plate through the cooperation of the connecting groove and the connecting convex part, so as to position the diffusion film and the light enhancement film, so that the diffusion film and the light enhancement film cannot move horizontally;

[0053] Secondly, the design of the sealing ring can fill the gap between the light guide plate assembly and the installation groove, and can enhance the friction between the light guide plate assembly and the frame, so as to avoid the light guide plate assembly from loosening;

[0054] There is also the design of the cross slot and the first screw mounting hole. When it is assembled on the mating part, the cross slot is used to engage and fix it on the cross protrusion, and then the locking piece is passed through the first screw mounting hole and the second screw mounting hole respectively to lock it on the mating part, performing double locking, thereby improving the overall stability of the frame relative to the mating part.

[0055] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A backlight structure that facilitates product assembly, characterized in that: It includes a frame, a sealing ring and a light guide plate assembly; The frame has a mounting groove for mounting the light guide plate assembly and the sealing ring, and a cross groove for mounting and positioning with the cross protrusion on the matching piece; wherein the inner wall surface of the mounting groove is oppositely provided with a clamping groove; The sealing ring is sleeved outside the light guide plate assembly, and a buckle for matching with the card slot is arranged on the outside of the sealing ring; the sealing ring is installed in the installation slot through the cooperation between the buckle and the card slot; The light guide plate assembly includes a light guide plate and a diffusion film and a light enhancement film arranged on one side surface of the light guide plate; the light guide plate has a connecting protrusion on the outside; the diffusion film and the light enhancement film are arranged on the light output surface of the light guide plate; the diffusion film and the light enhancement film are both provided with connecting grooves at the corresponding connecting protrusions on the outside; the diffusion film and the light enhancement film are arranged on the light output surface of the light guide plate through the cooperation of the connecting grooves and the connecting protrusions.

2. The backlight source structure for facilitating product assembly according to claim 1, characterized in that: The cross groove includes a longitudinal groove and a transverse groove, and the longitudinal groove passes through the transverse groove in the vertical direction of the frame; the mating piece has a frame mounting surface, and the frame mounting surface is provided with a cross protrusion; the cross protrusion is arranged along the length extension direction of the mating piece, the frame is arranged on the mating piece, and the cross groove is clamped and fixed on the cross protrusion.

3. The backlight source structure for facilitating product assembly according to claim 2, characterized in that: The frame is also provided with a first screw mounting hole, and correspondingly, the mating piece is provided with a second screw mounting hole. The frame is provided on the mating piece, and is locked on the mating piece by passing a locking piece through the first screw mounting hole and the second screw mounting hole respectively.

4. The backlight source structure for facilitating product assembly according to claim 1, characterized in that: The buckle is integrally injection-molded on the sealing ring, and an avoidance position is arranged on the sealing ring corresponding to the connecting convex part.

5. The backlight source structure for facilitating product assembly according to claim 1 or 4, characterized in that: The sealing ring is made of chloroprene rubber.

6. The backlight source structure for facilitating product assembly according to claim 1 or 4, characterized in that: The buckle is provided with a guiding inclined surface.

7. The backlight source structure for facilitating product assembly according to claim 1 or 4, characterized in that: The frame is also provided with a notch on the side corresponding to the installation groove.

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