BACKLIGHT MODULE AND DISPLAY DEVICE THEREOF

Abstract

A backlight module and a display device thereof are provided. The backlight module includes a light guide plate, a frame body, and a light source. The frame body is disposed around the light guide plate. The light source is disposed between the light guide plate and the frame. A via hole defined on the light guide plate. An outer convex is disposed on a side plate of the light guide plate away from the light source behind the via hole, and/or an inner recess is disposed on a side frame of the frame body away from the light source behind the via hole.

Claims

1. A backlight module, comprising: a light guide plate; a frame body, wherein the frame body is disposed around the light guide plate; a light source, wherein the light source is disposed between the light guide plate and the frame body; and a via hole defined on the light guide plate; wherein an outer convex is disposed on a side plate of the light guide plate away from the light source behind the via hole, and/or an inner recess is disposed on a side frame of the frame body away from the light source behind the via hole.

2. The backlight module according to claim 1, wherein a surface shape of the outer convex comprises a circular-arc.

3. The backlight module according to claim 1, wherein a shape of the inner recess corresponds to a shape of the outer convex.

4. The backlight module according to claim 3, wherein a surface shape of the inner recess comprises a circular-arc.

5. The backlight module according to claim 1, further comprising: a backplate; a reflective plate, wherein the reflective plate is disposed on the backplate, and the light guide plate is disposed on the reflective plate; and an optical film disposed on the light guide plate.

6. The backlight module according to claim 1, further comprising: a light strip circuit board, wherein the light strip circuit board is connected to the light source; and a light shielding glue, wherein the light shielding glue is disposed on the light strip circuit board.

7. The backlight module according to claim 5, wherein the optical film comprises: a lower diffusion plate, wherein the lower diffusion plate is disposed on the light guide plate; a prism plate, wherein the prism plate is disposed on the lower diffusion plate; and an upper diffusion plate disposed on the prism plate.

8. The backlight module according to claim 6, wherein the light strip circuit board is connected to the frame body and the light guide plate through a double-sided tape.

9. A display device comprising the backlight module of claim 1.

10. The display device according to claim 9, wherein a surface shape of the outer convex comprises a circular-arc.

11. The display device according to claim 9, wherein a shape of the inner recess corresponds to a shape of the outer convex.

12. The display device according to claim 11, wherein a surface shape of the inner recess comprises a circular-arc.

13. The display device according to claim 9, further comprising: a backplate; a reflective plate, wherein the reflective plate is disposed on the backplate, and the light guide plate is disposed on the reflective plate; and an optical film disposed on the light guide plate.

14. The display device according to claim 9, further comprising: a light strip circuit board, wherein the light strip circuit board is connected to the light source; and a light shielding glue, wherein the light shielding glue is disposed on the light strip circuit board.

15. The display device according to claim 13, wherein the optical film comprises: a lower diffusion plate, wherein the lower diffusion plate is disposed on the light guide plate; a prism plate, wherein the prism plate is disposed on the lower diffusion plate; and an upper diffusion plate disposed on the prism plate.

16. The display device according to claim 14, wherein the light strip circuit board is connected to the frame body and the light guide plate through a double-sided tape.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments, the drawings described in the description of the embodiments are briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings can also be obtained from those skilled persons in the art based on drawings without any creative effort.

[0027] FIG. 1 is a schematic view of a backlight module according to one embodiment of the present invention.

[0028] FIG. 2 is a plan view of a light guide plate and a frame body according to a first embodiment of the present invention.

[0029] FIG. 3 is a plan view of a light guide plate and a frame body according to a second embodiment of the present invention.

[0030] FIG. 4 is a plan view of a light guide plate and a casing according to a third embodiment of the present invention.

[0031] Reference numerals are described below:

[0032] reflective plate 1; light guide plate 2; optical film 3; frame body 4; light source 5; light strip circuit board 6; light shielding glue 7; double-sided tape 8; first side plate 21; second side plate 22; via hole 23; outer convex 24; first side frame 41; second side frame 42; and inner recess 43.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0033] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Those skilled persons in the art will easily understand how to implement the invention. The invention can be implemented by the embodiments, so that the technical content of the disclosure will be clear, so that those skilled persons in the art will understand how to implement the invention. The present invention may be accomplished in many different embodiments, and the scope of the invention is not limited to the embodiments described herein.

[0034] Directional terms mentioned in this application, such as “up,” “down,” “forward,” “backward,” “left,” “right,” “inside,” “outside,” “side,” etc., are merely indicated the direction of the drawings. Therefore, the directional terms are used for illustrating and understanding of the application rather than limiting thereof.

[0035] In the drawings, identical components are marked with the same reference numerals, and structural or components having similar functions are marked with similar reference numerals. Moreover, the size and thickness of each component shown in the drawings are arbitrarily shown for understanding and describing, and the invention does not limit the size and thickness of each component.

[0036] When a component is described as “on” another component, the component can be disposed directly on the other component. Also, one component is disposed on an intermediate component, and the intermediate component is disposed on another component. When a component is described as “installed” or “connected” to another component, it can be understood as directly “installed” or “connected” to another component.

First Embodiment

[0037] As shown in FIG. 1, it is a schematic view of a backlight module according to one embodiment of the present invention. The backlight module includes a backplate (not shown), a reflective plate 1, a light guide plate 2, an optical film 3, a frame body 4, a light source 5, a light strip circuit board 6, and a light shielding glue 7.

[0038] The reflective plate 1 is disposed on the backplate and is mainly used for reflecting leaking light from the bottom of the light guide plate 2 back into the light guide plate 2 for improving light availability.

[0039] As shown in FIG. 1 and FIG. 2, the light guide plate 2 is disposed on the reflective plate 1. A via hole 23 is defined on the light guide plate 2. The light guide plate 2 includes a first side plate 21 and a second side plate 22 corresponding to the first side plate 21. The second side plate 22 is a side plate of the light guide plate 2 away from the light source 5 behind the via hole 23.

[0040] As shown in FIG. 1 and FIG. 2, the frame body 4 is disposed around the light guide plate 2. The frame body 4 includes a first side frame 41 parallel to the first side plate 21 and a second side frame 42 parallel to the second side plate 22. The second side frame 42 is a side frame of the frame body 4 away from the light source 5 behind the via hole 23. The light source 5 is disposed between the first side plate 21 and the first side frame 41.

[0041] As shown in FIG. 2, an outer convex 24 is disposed on the second side plate 22 of the light guide plate 2 behind the via hole 23. A surface shape of the outer convex 24 is a circular-arc. The light is reflected multiple times at the outer convex 24 through the outer convex 24 having a circular-arc shape of the second side plate 22. Therefore, more light reaches behind the via hole, and the brightness of the light guide plate behind the via hole is improved, thereby improving the brightness uniformity of the entire backlight module, optical property, and customer experience satisfaction.

[0042] An optical film 3 is disposed on the light guide plate 2. Specifically, the optical film 3 includes a lower diffusion plate, a prism plate, and an upper diffusion plate. The lower diffusion plate is disposed on the light guide plate. The prism plate is disposed on the lower diffusion plate. The upper diffusion plate is disposed on the prism plate. A light shielding plate is disposed on the upper diffusion plate. The lower diffusion plate and the upper diffusion plate include a plurality of granular objects, and the light received by the light guide plate 2 may be diffused, so that the light is propagated toward the front of the display panel, thereby widening the viewing angle and concealing pattern formed on the light guide plate 2. The prism plate collects the diffused light so as to emit the diffused light at a certain angle, thereby improving the brightness of the display panel.

[0043] The light strip circuit board 6 is connected to the light source 5. The light strip circuit board 6 is connected to the frame body 4 and the light guide plate 2 through a double-sided tape.

[0044] The light shielding glue 7 is disposed on the light strip circuit board 6. It is mainly used to position the optical film 3 and shade a side of the frame 4 of the display device.

Second Embodiment

[0045] As shown in FIG. 3, the difference between the second embodiment and the first embodiment is that an inner recess 43 is disposed on a second side frame 42 of the frame body 4 away from the light source 5 behind the via hole 23. A shape of the inner recess 43 corresponds to a shape of the outer convex 24. A surface shape of the inner recess 43 includes a circular-arc.

[0046] The light is reflected multiple times at the inner recess 43 through the he inner recess 43 of the frame body 4. Therefore, more light reaches behind the via hole, and the brightness of the light guide plate behind the via hole is improved, thereby improving the brightness uniformity of the entire backlight module, optical property, and customer experience satisfaction.

Third Embodiment

[0047] As shown in FIG. 4, the difference between the third embodiment and the second embodiment is that an outer convex 24 is disposed on a second side plate 22 of a light guide plate 2 away from the light source 5 behind the via hole 23. An inner recess 43 is disposed on a second side frame 42, which corresponds to the outer convex 24, of the frame body 4 away from the light source 5 behind the via hole 23.

[0048] A shape similar to a concave mirror is formed through the circular-arc outer convex 24 of the second side plate 22 and circular-arc the inner recess 43 of the second side frame 42. The light is reflected multiple times at the convex and recess, and more light reaches behind the via hole, thereby improving the brightness of the light guide plate behind the via hole, the brightness uniformity of the entire backlight module, optical property, and customer experience satisfaction.

[0049] A display device is also provided. The display device includes above backlight module. Since the backlight module has the same structure and the same technical effect, it is not be described herein

[0050] The backlight module and the display device provided are described in detail above. It is understood that the exemplary embodiments described herein are considered as illustrative only, and are not intended to limit the invention. Descriptions of features or aspects in each exemplary embodiment should generally be considered as suitable features or aspects in other exemplary embodiments. While the invention has been described with reference to the preferred embodiments thereof, various modifications and changes can be made by those skilled persons in the art. The invention is intended to cover various modifications within the scope of the appended claims.

[0051] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the invention are included within the scope of the invention.