Frame structure, backlight module and display device

Abstract

To provide a frame structure for narrowing the edge of a display device, and to provide a backlight module and a display device .SOLUTION: The frame structure includes an edge 10 and a back plate 20. In the edge, a plurality of assembly parts 11 separated from one another are formed. In the circumferential edge of the back plate, a plurality of engagement parts 21 separated from one another are formed. The assembly parts and the engagement parts are located to respectively engage with each other. The backlight module includes the frame structure and a light source built in the frame structure. The display device includes the backlight module and a display panel provided in the upper part of the edge.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present application relates to a frame structure, a backlight module and a display device, and more particularly to a frame structure for a backlight module and a display device using the backlight module. [Background technology]

[0002] Currently, in order to increase the display area of ​​the effective area of ​​the display device, the frame of the display device tends to become narrower and narrower.

[0003] As shown in FIG. 14, the display device includes a backlight module and a panel 70 assembled to the backlight module.

[0004] The backlight module comprises an outer frame 80 and a fixing plate 90. The outer frame 80 comprises a support wall 81 and an outer wall 82 extending downward from the support wall 81. The peripheral edge of the fixing plate 90 is bent upward to form a side wall 91, and the outer wall 82 and the side wall 91 are respectively formed with corresponding locking holes 83 and locking devices 92, so that the outer frame 80 is assembled around the side wall 91 of the fixing plate 90 via the outer wall 82, and the support wall 81 is used to support the panel 70.

[0005] In order for the outer frame 80 to have a certain assembly strength, the outer wall 82 must be pressed tightly against the side wall 91 of the fixing plate 90 to prevent the fasteners 92 from slipping out of the fastening holes 83. Therefore, the outer wall 82 and the side wall 91 must both have a certain thickness to avoid insufficient strength to support the panel 70, and the frame of the display device must be greater than or equal to the total thickness of the thickness T1 of the outer wall 82, the thickness T2 of the side wall 91, and the width T3 of a portion of the support wall 81. However, this design is disadvantageous to the objective of a narrow frame, and there is room for improvement. Summary of the Invention [Problem to be solved by the invention]

[0006] The main purpose of this application is to provide a frame structure, a backlight module and a display device to improve the problem that the frame structure of the conventional backlight module is disadvantageous to the narrow frame design of the display device. [Means for solving the problem]

[0007] In order to achieve the above object, the present application provides a frame structure that separates a light emitting side from a rear side on the opposite side, comprising: at least one picture frame having a plurality of spaced assemblies; a back plate having a plurality of spaced apart engagement portions, the positions of the assembly portions and the engagement portions corresponding to each other, and the assembly portions and the engagement portions engaging with each other; Each engagement portion has two engagement surfaces, a bottom surface connecting the two engagement surfaces, and an opening located at the outer edge of the back plate opposite the bottom surface, and there is a width distance between the two engagement surfaces of each engagement portion, and the width distance adjacent to the opening is smaller than the width distance adjacent to the bottom surface.

[0008] In order to achieve the above object, the backlight module provided by the present application comprises: The frame structure, wherein an assembly space is formed between the frame and the back plate; a light source provided on the back plate and positioned within the assembly space and facing the light guide plate.

[0009] In order to achieve the above object, the display device provided by the present application comprises: the backlight module, wherein the light exit opening formed by being surrounded by a frame of the frame structure is in communication with the assembly space; a display panel that is installed in the frame and positioned on the light exit side of the light exit port. [Effects of the Invention]

[0010] The frame and backplate of the frame structure of the present application are engaged with each other via the assembly part and the engagement part, so that the frame is directly assembled to the periphery of the backlight, thereby narrowing the outer frame of the backlight module, and the width of the outer frame of the display device of the present application does not affect the thickness of the backplate, thereby realizing a narrow frame design. Here, the design of the width distance of the engagement part is varied to improve the assembly stability of the assembly part and the engagement part, effectively prevent the frame and backplate from separating, improve the structural stability of the frame structure of the present application, and provide the backlight module with a certain assembly strength. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a partially exploded schematic diagram of a first preferred embodiment of a frame structure according to the present application. [Figure 2] FIG. 2 is a schematic plan view of a partially exploded frame structure according to the present application. [Figure 3] FIG. 3 is a schematic plan view of the frame structure according to the present application as seen from the bottom. [Figure 4] FIG. 4 is a partial plan view schematically illustrating an engagement portion of the backlight module according to the present application as viewed from the front. [Figure 5] FIG. 5 is a partial schematic plan view of the engaging portion of the frame structure according to the present application as viewed from the bottom. [Figure 6] FIG. 6 is a schematic cross-sectional side view of another embodiment of the assembly portion and engagement portion of the frame structure according to the present application. [Figure 7] FIG. 7 is a schematic three-dimensional view of an engagement portion of the frame structure according to the present application. [Figure 8] FIG. 8 is a partial cross-sectional side schematic view of the first preferred embodiment of the backlight module according to the present application. [Figure 9] FIG. 9 is a partial cross-sectional schematic side view of the first preferred embodiment of the display device according to the present application. [Figure 10] FIG. 10 is a partially exploded schematic view of a second preferred embodiment of a frame structure according to the present application. [Figure 11] FIG. 11 is a partial schematic three-dimensional view of a second preferred embodiment of a frame structure according to the present application. [Figure 12] FIG. 12 is a partial cross-sectional side schematic view of the second preferred embodiment of the backlight module according to the present application. [Figure 13] FIG. 13 is a partial cross-sectional schematic side view of a second preferred embodiment of a display device according to the present application. [Figure 14] FIG. 14 is a partial cross-sectional schematic diagram of a conventional display device. DETAILED DESCRIPTION OF THE INVENTION

[0012] 1 to 3, which show a preferred embodiment of a frame structure according to the present application, Light emission The frame structure is divided into a side and a rear side. 、 Picture frame 10 and Backplate 20 Equipped with The frame 10 is provided on the periphery of the back plate 20. 。

[0013] The frame 10 has a plurality of spaced apart assemblies 11, where the plurality of assemblies 11 are located on the rear edge of the frame 10. In this embodiment, the frame 10 has side walls 14, and the plurality of assemblies 11 are located on the rear edge of the side walls 14.

[0014] The back plate 20 has a plurality of spaced engagement portions 21, and the positions of the plurality of assembly portions 11 and the plurality of engagement portions 21 correspond to each other. As shown in FIG. 3, the plurality of assembly portions 11 and the plurality of engagement portions 21 can engage with each other, thereby preventing the assembly portions 11 of the frame 10 from slipping out of the engagement portions 21 of the back plate 20, and ensuring a stable assembly of the frame 10 and the back plate 20.

[0015] As shown in Figures 1, 2 and 4 to 7, each engagement portion 21 has two engagement surfaces 22, a bottom surface 23 connecting the two engagement surfaces 22, and an opening 24 located on the outer edge of the back plate 20 opposite the bottom surface 23. As shown in Figure 7, there is a width distance between the two opposing engagement surfaces 22 of each engagement portion 21, and the assembly portion of the assembly portion 11 and the engagement portion 21 has a thickness.

[0016] In order to briefly explain the embodiments of the present application, the direction in which the frame structure of the present application faces from the back side to the light-emitting side is defined as a first direction D1, the back side is located at the rear end of the first direction D1, and the light-emitting side is located at the front end of the first direction D1, the direction in which the bottom surface 23 of the engagement portion 21 faces the opening 24 is defined as a second direction D2, the bottom surface 23 is located at the rear end of the second direction D2, and the opening 24 is located at the front end of the second direction D2, and the multiple engagement portions 21 are arranged on the back plate 20 along a third direction D3, and in this embodiment, the third direction D3 is a direction perpendicular to the first direction D1 and the second direction D2, and the first direction D1, the second direction D2, and the third direction D3 are shown in Figures 1 to 13, and the assembly relationship between the multiple assembly portions 11 and the multiple engagement portions 21 will be described with reference to the following paragraphs.

[0017] As shown in FIGS. 1 to 4, the shapes of the assembly parts 11 correspond to the engaging parts 21. The assembly parts 11 and the engaging parts 21 may engage with each other at points or at surfaces, which can be selected by manufacturers according to their needs or processing equipment. Here, the point engagement mode refers to partial contact between the assembly parts 11 and the engaging parts 21, and the frame 10 and the back plate 20 are engaged with each other to prevent slippage in the first direction D1 and the second direction D2 (not shown). The surface engagement mode refers to close contact between the assembly parts 11 and the engaging parts 21, and in particular, refers to close contact between the assembly parts 11 and the engaging parts 21 and the engaging surfaces 22 or bottom surfaces 23 of the engaging parts 21, thereby providing better assembly stability between the frame 10 and the back plate 20.

[0018] 2, 3 and 7, the width distance between the two engagement surfaces 22 of each engagement portion 21 gradually changes, and depending on the assembly direction of the assembly portion 11 and the engagement portion 12, the width distance between the two engagement surfaces 22 gradually decreases along the first direction D1, and the width distance between the two engagement surfaces 22 both gradually decreases along the second direction D2.

[0019] Referring to Figures 2 and 4, in this embodiment, the two engagement surfaces 22 have a first distance h1 at a position close to the light-emitting side in the first direction D1, and a second distance h2 at a position close to the back side, where the first distance h1 is smaller than the second distance h2, so that when the assembly part 11 and the engagement part 21 engage with each other, the assembly part 11 can be ensured not to slip out along the first direction D1.

[0020] 3 and 5, the two engagement surfaces 22 have a third distance h3 at a position close to the opening 24 of the engagement portion 21 in the second direction D2, and a fourth distance h4 at a position close to the bottom surface 23 of the engagement portion 21, where the third distance h3 is smaller than the fourth distance h4, thereby ensuring that the assembly part 11 does not slip out along the second direction D2 when the assembly part 11 and the engagement portion 21 engage with each other.

[0021] 1 to 5, the shape of the assembly part 11 corresponds to the engaging part 21, so that the width of the assembly part 11 in the first direction D1 is narrow at the front end and wide at the rear end, and the width of the assembly part 11 in the second direction D2 is narrow at the front end and wide at the rear end, thereby matching the width distances in the first direction D1 and the second direction D2 of the engaging part 21. That is, the width distance of the assembly part 11 gradually decreases from the back side toward the light-emitting side and from the bottom surface 23 toward the opening 24, so that the width of the assembly part 11 can gradually decrease along the first direction D1 and along the second direction D2.

[0022] 7, the characteristics of the engagement portions 21 will be further described. Because the first distance h1 adjacent to the light-emitting side is smaller than the second distance h2 adjacent to the back side, an included angle θ1 is formed between the engagement surface 22 of each engagement portion 21 and the back side of the back plate 20, and the included angle θ1 is an acute angle. Meanwhile, because the third distance h3 adjacent to the opening 24 is smaller than the fourth distance h4 adjacent to the bottom surface 23, an included angle θ2 is formed between the engagement surface 22 of each engagement portion 21 and the bottom surface 23, and the included angle θ2 is an acute angle.

[0023] Since the included angles θ1 and θ2 of the engaging portions 20 are acute angles, when the frame 10 is pulled or subjected to an external force, the assembly portions 11 of the frame 10 will not escape from the engaging portions 21 of the back plate 20 in the first direction D1 and the second direction D2, thereby providing sufficient structural strength to the frame structure of the present application. Here, the structure of the plurality of assembly portions 11 and the plurality of engaging portions 21 can be slightly deformed when pressed into each other, and can recover to their original state and maintain tight engagement after being engaged with each other.

[0024] In one embodiment of the frame 10 according to this embodiment, the thickness of the frame 10 in the second direction D2 is the same, and the first distance h1 is smaller than the second distance h2, and the third distance h3 is smaller than the fourth distance h4, thereby ensuring the assembly stability of the assembly part 11 and the engagement part 12.

[0025] 6, in another embodiment of the frame 10 and the back plate 20 of this embodiment, the two engagement surfaces 22 selectively have a fifth distance h5 at a position close to the light-emitting side and a sixth distance h6 at a position close to the back side in the second direction D2, where the fifth distance h5 is smaller than the sixth distance h6. In other words, because the fifth distance h5 close to the light-emitting side is smaller than the sixth distance h6 close to the back side, an included angle θ3 is formed between the bottom surface 23 of each engagement portion 21 and the bottom side of the back plate 20, and the included angle θ3 is an acute angle. The thickness of the assembly part 11 of the frame 10 in the second direction D2 gradually increases from the light-emitting side to the back side according to the included angle θ3, thereby improving the mechanical strength of the assembly part 11 of the frame 10 and making the assembly part 11 less likely to collapse.

[0026] In short, the frame structure of the present application has only the thickness of the frame 10 in the second direction D2, which can provide sufficient assembly strength, and since the backplate 20 does not bend toward the first direction D1, the frame structure of the present application can be used in a display device to increase the area of ​​the effective display area of ​​the display device and further achieve the effect of a narrow frame.

[0027] In the first preferred embodiment of the frame structure according to the present application, the side walls 14 of the frame 10 are assembled to part of the edge of the backplate 20, i.e., they may be assembled to two or three adjacent sides of the backplate 20, or a plurality of the frames 10 may be assembled together to different areas of the edge of the backplate 20. If the frame 10 is integrally molded, the shape of the side walls 14 of the frame 10 will fit and surround the edge of the backplate 20. For example, if the backplate 20 is a polygonal, circular, or arc-shaped plate structure on the edge, the frame 10 will correspond to the periphery of the backplate 20 and may be a polygonal frame, an annular frame, or a strip-like structure corresponding to part of the edge of the bookplate.

[0028] Furthermore, if the peripheral length of the frame 10 is slightly smaller than the sum of the side lengths (not shown) of the back plate 20, when the frame 10 is assembled to the peripheral edge of the back plate 20, the frame 10 must expand and deform outward to match the peripheral length of the back plate 20. Therefore, the assembly parts 11 of the frame 10 are pressed into the corresponding engagement parts 21 of the back plate 20, causing the frame 10 to tilt with respect to the first direction D1, and the frame 10 expands and deforms outward, generating a recovery elastic force, causing the multiple assembly parts 11 to adhere closely to the bottom surfaces 23 of the multiple engagement parts 21, thereby improving the assembly strength between the multiple assembly parts 11 and the multiple engagement parts 21.

[0029] The frame structure of the present application can be applied to a direct-type backlight module or a side-loading type backlight module. Referring to Figure 8, a first preferred embodiment of a backlight module according to the present application is shown, which includes the above-mentioned frame structure and a light source 30. An assembly space 12 is formed between a frame 10 of the frame structure and a backplate 20, and the light source 30 is mounted on the backplate 20 and located within the assembly space 12. Taking a side-loading type backlight module as an example, the backlight module includes a light guide plate 40 that is mounted on the backplate 20 and located within the assembly space 12, with the light source 30 facing the light guide plate 40 and emitting light to one side of the light guide plate 40.

[0030] Referring to Figure 9, a first preferred embodiment of the display device of the present application is shown, which comprises the above-mentioned backlight module and a display panel 50, in which the frame structure 10 surrounds and forms a light outlet 13, the assembly space 12 communicates with the light outlet 13, the display panel 50 is mounted on the frame 10 and is located on the light outlet side of the light outlet 13, and the display panel 50 is directly supported by the top of the frame 10, so that the width of the outer frame of the display device of the present application is only the thickness W1 of the frame 10.

[0031] 10 to 12, a second preferred embodiment of the frame structure according to the present application is shown, in which the frame 10 has side walls 14 and a support portion 15, the plurality of assembly portions 11 are located on the edges of the side walls 14, the support portion 15 is provided on the light-emitting side of the frame 10, and the support portion 15 extends from the periphery of the frame 10 toward the inside of the frame structure along the second direction D2, and a display panel 50 is installed on the support portion 15.

[0032] As shown in Fig. 10, before the frame 10 is assembled with the backplate 20, an included angle θ4 is formed between the sidewall 14 and the support portion 15 of the frame 10. The included angle θ4 is preferably less than or equal to 90 degrees, and is slightly smaller than 90 degrees. As shown in Fig. 11, when the assembly portion 11 of the frame 10 is press-fitted into the engagement portion 21 of the backplate 20, the included angle θ4 between the sidewall 14 and the support portion 15 of the frame 10 widens to form an included angle θ4'. This allows the frame 10 to apply a biasing force to the two adjacent sides of the backplate 20 through the tension of its own material, thereby improving the assembly strength between the assembly portions 11 and the engagement portions 21. For example, the included angle θ4 may range from 88 degrees to 90 degrees, including the end values. If the included angle θ4 is less than 88 degrees, when the frame 10 engages with the back plate 20, the side wall 14 and the support portion 15 will be subjected to excessive stress and will be prone to breakage; if the included angle θ4 exceeds 90 degrees, the frame 10 will not be able to apply force to the edge of the back plate 20, and the assembly strength between the multiple assembly portions 11 and the multiple engagement portions 21 will not be improved.

[0033] Referring to FIG. 12, a second preferred embodiment of a backlight module according to the present application is shown, which includes the above-mentioned frame structure and a light source 30. An assembly space 12 is formed between the frame 10 of the frame structure and the backplate 20, and the light source 30 is mounted on the backplate 20 and located within the assembly space 12. Taking a side-entry type backlight module as an example, the backlight module includes a light guide plate 40, which is mounted on the backplate 20 and located within the assembly space 12, and the light source 30 faces the light guide plate 40 and projects light onto one side of the light guide plate 40.

[0034] Referring to Figure 13, a second preferred embodiment of the display device according to the present application is shown, which comprises the above-mentioned backlight module and a display panel 50, wherein the frame 10 of the frame structure surrounds and forms the light outlet 13, the assembly space 12 is connected to the light outlet 13, the display panel 50 is mounted on the support part 15 of the frame 10 and is located on the light outlet side of the light outlet 13, wherein the support part 15 supports the display panel 50 and extends toward the center of the backlight module, thereby ensuring that the display panel 50 has a sufficient bonding area and improving the assembly stability of the display panel 50, and the width of the outer frame of the display device according to the present application is the sum of the thickness W1 of the frame 10 (i.e., the thickness of the side wall 14) and the width W2 of the support part 15.

[0035] As shown in Figure 9, the width of the outer frame of the first preferred embodiment of the display device of the present application is the thickness W1 of the frame 10, and as shown in Figure 13, the width of the outer frame of the second preferred embodiment of the display device of the present application is the sum of the thickness W1 of the frame 10 (i.e., the thickness of the side wall 14) and the width W2 of the support portion 15. In either case, the width of the outer frame of the display device is smaller than the width of the outer frame of the conventional display device, and therefore the area of ​​the effective area of ​​the display device of the present application is larger than the effective area of ​​the conventional display device, so that the display device of the present application can reliably meet the market needs for narrow frame.

[0036] In short, due to the design of the frame structure, the frame 10 of the backlight module is directly assembled to the periphery of the backplate 20 and has a certain assembly strength, so that the outer frame of the backlight module can be narrowed, and the width of the outer frame of the display device of the present application is not affected by the thickness of the backplate 20, and the area of ​​the light output side of the display device does not change, so by increasing the area of ​​the light output port 13, the area of ​​the effective area of ​​the display device is increased, and a narrow frame design of the display device is realized. [Explanation of symbols]

[0037] 10...Picture frame 11…Assembly department 12...Assembly space 13...Light exit port 14…Side wall 15...Support part 20…Backplate 21...Engagement portion 22…Engagement surface 23...Bottom 24…Aperture 30...Support part 40...Light guide plate 50...Light source 60...Display panel 70...Panel 80...Outer frame 81…Supporting wall 82...Exterior wall 83...Latching hole 90…Fixing plate 91...Side wall 92...Latching device D1...first direction D2...Second direction h1...first distance h2...second distance h3...Third distance h4...fourth distance h5...fifth distance h6...6th distance θ1, θ2, θ3, θ4, θ4'...included angle W1: Thickness of the frame W2: Width of support T1: Thickness of the outer wall T2: Thickness of the side wall T3: Width of part of the supporting wall

Claims

1. A frame structure that separates a light emitting side from a rear side on the opposite side, at least one picture frame having a plurality of spaced assemblies; a back plate having a plurality of spaced apart engagement portions, the positions of the assembly portions and the engagement portions corresponding to each other, and the assembly portions and the engagement portions engaging with each other; Each engagement portion has two engagement surfaces, a bottom surface connecting the two engagement surfaces, and an opening located at the outer edge of the back plate opposite the bottom surface, and there is a width distance between the two engagement surfaces of each engagement portion, and the width distance close to the opening is smaller than the width distance close to the bottom surface, and a light exit port is formed by being surrounded by the frame of the frame structure, and the light exit port side constitutes the light exit side and the back plate side constitutes the back side.

2. The frame structure of claim 1, wherein the direction from the back side toward the light-emitting side is defined as a first direction, the direction from the bottom surface of the engagement portion toward the opening is defined as a second direction, the two engagement surfaces have a first distance at a position close to the light-emitting side in the first direction, and a second distance at a position close to the back side, the first distance being smaller than the second distance, an included angle being formed between the engagement surface of the engagement portion and the bottom side of the back plate, and the included angle being an acute angle.

3. The frame structure according to claim 2 , wherein the width distance between the two engagement surfaces of each engagement portion gradually decreases from the back side toward the light-emitting side along the first direction.

4. 3. The frame structure according to claim 2, wherein the two engagement surfaces have a third distance at a position close to the opening of the engagement portion in the second direction, and a fourth distance at a position close to the bottom surface of the engagement portion, the third distance being smaller than the fourth distance, an included angle being formed between the engagement surfaces and the bottom surface of the engagement portion, and the included angle being an acute angle.

5. The frame structure according to claim 4 , wherein the width distance between the two engagement surfaces of each engagement portion gradually decreases from the bottom surface toward the opening along the second direction.

6. 2. The frame structure of claim 1, wherein the direction from the back side toward the light-emitting side is defined as a first direction, the direction from the bottom surface of the engagement portion toward the opening is defined as a second direction, the multiple engagement portions are arranged on the edge of the backplate along a third direction and penetrate the light-emitting side and backside of the backplate in the first direction, and the third direction is a direction that is not parallel to both the first direction and the second direction.

7. The frame structure of claim 6, wherein the width of the assembly portion gradually decreases in the first direction from the back side toward the light-emitting side, and the width of the assembly portion gradually decreases in the second direction from the bottom surface toward the opening.

8. The frame structure according to claim 6 , wherein the frame includes a side wall, and the assembly portion is arranged on a lower edge of the side wall along the third direction and protrudes along the first direction.

9. The frame structure according to claim 8 , wherein the frame further comprises a support portion provided on the light-emitting side of the side wall and extending inward from a peripheral edge of the side wall.

10. The frame structure according to claim 9 , wherein the included angle between the side wall and the support is less than or equal to 90 degrees.

11. An included angle is formed between the bottom surface of the engagement portion and the bottom side of the back plate, and the included angle is an acute angle; The frame structure according to claim 6 , wherein the thickness of the engaging portion of the frame in the second direction gradually increases from the light-emitting side toward the back side according to the included angle.

12. The frame structure according to claim 1 , wherein the peripheral length of the frame is smaller than the sum of the lengths of the outer edges of the back plate.

13. The frame structure according to any one of claims 1 to 12, wherein an assembly space is formed between the frame and the back plate; a light guide plate provided on the back plate and positioned within the assembly space; a light source provided on the back plate and positioned within the assembly space and facing the light guide plate.

14. The backlight module according to claim 13, wherein the light exit port and the assembly space are in communication with each other; a display panel that is installed in the frame and positioned on the light exit side of the light exit port.

Images