Backlight module with folded reflective sheet, and display device

Abstract

A backlight module with a folded reflective sheet, and a display device. The display device comprises said backlight module, wherein said backlight module is provided with a reflective unit and a light source on a light incident side of a light guide plate of said backlight module, and a first reflective sheet of the reflective unit has an attachment portion located on the light incident side, and an extension portion extending from the attachment portion along a light emergent surface. By means of light reflection characteristics of the first reflective sheet, light of the light source not directly projected to the light incident side of the light guide plate is reflected back into the light guide plate, and light emitted to an edge region of the light emergent surface adjacent to the light incident side is reflected back into the light guide plate by means of the extension portion, thereby reducing light leakage and hot spots, and improving the efficiency of light energy utilization.

Description

Backlight module with folding design and display device TECHNICAL FIELD

[0001] The present invention relates to a backlight module, in particular, to a backlight module for providing a back light source for a display panel in a display device. BACKGROUND

[0002] Currently, most of the display devices are liquid crystal display devices. Generally, the liquid crystal panel of a liquid crystal display device is provided with a backlight source by a backlight module. In order to meet the demand of thin display device, the backlight module is mostly in a side light type, that is, the light source is arranged at one side of the light guide plate, and the light incident from the one side of the light guide plate is converted into a surface light source by the total reflection of the light guide plate, or further, the optical film sheet arranged on the light exit surface of the light guide plate is used to homogenize or brighten the surface light source, so as to provide a picture display backlight source for the liquid crystal panel arranged on the light exit surface of the light guide plate.

[0003] However, in the backlight module of the display device, when the light source is arranged at the light incident side of the light guide plate, part of the light will leak out of the light exit surface of the light guide plate when the light source projects light to the light incident side of the light guide plate. In addition, the edge area adjacent to the light incident side of the light exit surface has a higher brightness due to the proximity of the light source, which causes the temperature to be too high, resulting in the appearance of the edge area adjacent to the light source of the backlight module of the display panel due to light leakage and hot spot, etc. Therefore, in order to ensure the quality of the display device, it is necessary to further overcome the light leakage problem of the backlight module.

[0004] SUMMARY

[0005] The present invention provides a backlight module with a folding design of a reflective sheet and a display device including the same, which solves the technical problems of light leakage and hot spot in the existing backlight module.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a backlight module with a folding design of a reflective sheet, which comprises:

[0007] a light guide plate, opposite sides of which are respectively a light exit surface and a back surface, the light exit surface and the back surface are connected with a light incident side;

[0008] a reflective unit, which comprises a first reflective sheet, the first reflective sheet has an attached part and an extension part, the attached part is located at the light incident side, and the extension part extends from the attached part along the light exit surface; and

[0009] a light source arranged at the light incident side of the light guide plate.

[0010] To achieve the foregoing and other objects, the present application further provides a display device, comprising:

[0011] A backlight module with a folding design is provided.

[0012] A display panel is disposed on the backlight module with a folding design.

[0013] The present application provides a backlight module with a folding design and a display device, wherein the first reflective sheet of the reflective unit has an attaching portion and an extending portion, the attaching portion is disposed on the light-incident side of the light guide plate, and the extending portion extends from the attaching portion along the light-incident side of the light guide plate. Thus, the light-reflecting property of the first reflective sheet is utilized to reflect the light not directly projected by the light source to the light-incident side of the light guide plate into the light guide plate, and the extending portion is utilized to provide light-reflecting and shielding effects on the edge area of the light-incident side of the light guide plate, so as to reflect the light projected to the edge area back into the light guide plate, effectively reducing light leakage and hot spots, and improving the light energy utilization rate. Therefore, the optimized backlight module provides a good backlight source for the display panel, and improves the problem of poor appearance of the display device caused by light leakage and hot spots at the light-incident position of the existing backlight module.

[0014] In the backlight module with a folding design of the present application, the reflective unit can further comprise a second reflective sheet disposed on the back surface of the light guide plate to assist the light projected to the back surface of the light guide plate to be reflected into the light guide plate. Moreover, the second reflective sheet can further extend to the connecting attaching portion of the first reflective sheet, so that the second reflective sheet and the extending portion of the first reflective sheet are disposed on the opposite sides of the light source, effectively reflecting the light projected by the light source to the light-incident side and the back surface of the light guide plate into the light guide plate, so as to reduce light leakage and achieve a better light energy utilization rate.

[0015] The reflective sheet of the present application has a backlight module with a folding design, and an optical film set is further arranged on the light exit surface of the light guide plate. The optical film set has a plurality of optical films stacked in sequence. The reflective unit has a positioning step on the extension of the first reflective sheet. The optical films form a positioning gap corresponding to the width change of the positioning step. The positioning step and the positioning gap correspond to each other and are fixed on the extension. Alternatively, the reflective unit has two positioning protrusions on both ends of the extension of the first reflective sheet along the light entrance side direction. The plurality of optical films have a positioning hole corresponding to the position of the positioning protrusions. The positioning protrusions are respectively positioned through the positioning holes. Alternatively, the extension of the first reflective sheet has a group of connecting holes on both ends along the light entrance side direction. The plurality of optical films have an assembly hole corresponding to the position of the group of connecting holes. The light guide plate forms a group of assembly protrusions corresponding to the position of the group of connecting holes. The group of assembly protrusions are positioned through the group of connecting holes of the extension and the assembly holes of the optical films. In this way, the reflective unit provides good support and fixing performance for the optical film set, and improves the assembly convenience and positioning accuracy of the optical film set arranged on the light exit surface of the light guide plate. The combination structure of the optical elements in the backlight module is optimized, and the production is more efficient. In this way, the positioning and assembly of the first reflective sheet, the optical film, and other components are convenient, the light uniformity of the overall backlight module is improved, the rework and cleaning time caused by poor assembly positioning of multiple components or residual burrs and foreign matters is reduced, the product production yield is increased, and the improvement cost caused by poor fixing structure of the light guide plate is avoided.

[0016] In the backlight module with a folding design of the present application, the light source includes a circuit substrate and a plurality of light emitting elements arranged on the circuit substrate. The attachment part of the reflective unit has a through hole corresponding to the position of each light emitting element. The attachment part is fixed on the circuit substrate. The light emitting elements respectively project light to the light entrance side through the corresponding through hole. The attachment part of the reflective unit provides the function of supporting and fixing the light source, and each light emitting element can accurately project light to the light entrance side of the light guide plate. Meanwhile, the attachment part with light reflection characteristics is arranged on the side of each light emitting element, and the light source is scattered to the outside of the light entrance side. The light is effectively reflected to the light guide plate by the attachment part and the extension of the first reflective sheet or in combination with the second reflective sheet, which reduces light leakage and improves light utilization. BRIEF DESCRIPTION OF DRAWINGS

[0017] FIG. 1 is a perspective exploded view of a first embodiment of the backlight module of the present application.

[0018] FIG. 2 is a partial cross-sectional view of the combined first embodiment of the backlight module shown in FIG. 1.

[0019] Figure 3 is a reference diagram of the first embodiment of the backlight module shown in Figures 1 and 2 in a use state when the light source emits light.

[0020] Figure 4 is a perspective exploded view of a second embodiment of the backlight module of the present application.

[0021] Figure 5 is a partial cross-sectional view of the second embodiment of the backlight module shown in Figure 4 after assembly.

[0022] Figure 6 is a reference diagram of the second embodiment of the backlight module shown in Figures 4 and 7 in a use state when the light source emits light.

[0023] Figure 7 is a partial enlarged perspective exploded view of the reflective unit and the optical film set in the first embodiment of the backlight module shown in Figure 1.

[0024] Figure 8 is a partial cross-sectional view of the first embodiment of the backlight module shown in Figure 1 after assembly.

[0025] Figure 9 is a partial enlarged perspective exploded view of the second embodiment of the backlight module shown in Figure 4.

[0026] Figure 10 is a partial enlarged perspective exploded view of another embodiment of the backlight module of the present application.

[0027] Figure 11 is a partial cross-sectional view of an embodiment of the display device of the present application.

[0028] Figure 12 is a partial cross-sectional view of another embodiment of the display device of the present application including a frame. DETAILED DESCRIPTION

[0029] In accordance with the content described in the foregoing summary of the application, the present application relates to a backlight module and a display device including the same, and the specific configurations of the backlight module and the display device are described below with reference to the accompanying drawings.

[0030] As shown in Figure 1, a first embodiment of the backlight module 1 of the present application is disclosed, which mainly includes a light guide plate 10, a reflective unit 20, and a light source 30.

[0031] As shown in Figures 1 and 2, the light guide plate 10 has a plate body with total internal reflection characteristics, and opposite sides of the light guide plate 10 are respectively a light exit face 11 and a back face 12. One side end of the light guide plate 10 has a light entrance side 13 connecting the light exit face 11 and the back face 12. The light exit face 11 defines a main light exit area 111 and a peripheral area 112 around the main light exit area 111, and the ranges of the main light exit area 111 and the peripheral area 112 are determined according to the area of the display screen of the display device.

[0032] As shown in FIG. 1 and FIG. 2, the reflection unit 20 includes a first reflection sheet 21, which is an optical component having light reflection performance, and has an attaching portion 211 located at the light-incident side 13 of the light guide plate 10 and an extending portion 212 extending from the attaching portion 211 along the light- emitting surface 11 of the light guide plate 10. Basically, the extending portion 212 is arranged on the edge area 112 of the light-emitting surface 11 adjacent to the light-incident side 13, so as not to affect the main light-emitting area 111 of the light-emitting surface 11 of the light guide plate 10.

[0033] As shown in FIG. 1 and FIG. 2, the light source 30 is arranged at the light-incident side 13 of the light guide plate 10 and can project light toward the light-incident side 13, so that the incident light can be uniformly emitted from the light-emitting surface 11 of the light guide plate 10 by the total reflection of light and other light guiding performance of the back surface 12 of the light guide plate 10.

[0034] As shown in FIG. 3, the light source 30 projects light toward the light-incident side 13 of the light guide plate 10, and the first reflection sheet 21 of the reflection unit 20 can be arranged outside the space between the light source 30 and the light-incident side 13 of the light guide plate 10 to provide light reflection performance, so as to scatter the light L1 scattered by the light source 30 outside the light-incident side 13 to the light guide plate 10 through the extending portion 212, and to reflect the light L2 projected to the edge area 112 of the light-emitting surface 11 of the light guide plate 10 adjacent to the light-incident side 13 back to the light guide plate 10 by the extending portion 212, so as to reduce light leakage and hot spot and improve light energy utilization.

[0035] As shown in FIG. 2, in the present embodiment, the light source 30 is selected as a light bar, which includes a circuit substrate 31 and a plurality of light-emitting elements 32 arranged on the circuit substrate 31. Preferably, the light-emitting elements 32 are selected as light-emitting diodes (LEDs), so as to have low power consumption and long service life.

[0036] As shown in FIG. 2, in order to combine the light source 30 located at the light-incident side 13 of the light guide plate 10 with the attaching portion 211 of the first reflective sheet 21, the attaching portion 211 is provided with a through hole 2111 corresponding to the position of each light emitting element 32, and the attaching portion 211 is fixed to the side of the circuit substrate 31 facing the light-incident side 13 of the light guide plate 10. The light emitting element 32 can be fixed to the circuit substrate 31 by the through hole 2111, and each light emitting element 32 can be accurately positioned at the predetermined position of the light-incident side 13 of the light guide plate 10. As shown in FIG. 3, the attaching portion 211 with light reflection characteristics is arranged opposite to the light-incident side 13 and located at the side of each light emitting element 32, so that the light scattered by the light source 30 to the outside of the light-incident side 13 is reflected to the light guide plate 10 by the attaching portion 211 and the extension portion 212, thereby reducing light leakage and effectively improving light energy utilization.

[0037] As shown in FIG. 1 and FIG. 2, the backlight module 1 further includes an optical film set 40 arranged on the light-incident side 11 of the light guide plate 10 and having a plurality of optical films 41 stacked in sequence. The optical film 41 has specific optical properties, for example, the optical film 41 can be a diffusion film with light diffusion properties, or a brightness enhancement film with brightness enhancement properties, or a prism film with light turning properties, etc. The number of optical films 41 and the selection of their optical properties are determined according to the use requirements of the backlight module 1. After the light emitted by the light source 30 is guided by the light guide plate 10 and emitted from the light-incident side 11, the light is diffused and brightened by the optical film set 40, thereby improving the brightness and uniformity of the backlight module 1.

[0038] As shown in FIG. 4 and FIG. 5, the second embodiment further includes a second reflective sheet 22 arranged on the back surface 12 of the light guide plate 10. The second reflective sheet 22 is arranged on the back surface 12 of the light guide plate 10 to provide light reflection performance and assist the light guide plate 10 in guiding light towards the light-incident side 11.

[0039] As shown in FIG. 4 and FIG. 5, the first reflective sheet 21 and the second reflective sheet 22 can be integrally formed; or the second reflective sheet 22 and the first reflective sheet 21 can be separate components.

[0040] As shown in FIG. 4 and FIG. 5, preferably, the second reflecting sheet 22 extends from the back surface 12 of the light guide plate 10 to the first reflecting sheet 21 and is connected to the side edge of the attaching portion 211 away from the extending portion 212. As shown in FIG. 6, by configuring the second reflecting sheet 22 and the extending portion 212 of the first reflecting sheet 21 on opposite sides of the light source 30, and combining the configuration of the attaching portion 211 attached to the light source 30, the reflecting unit 20 can provide light reflecting performance on three different sides of the space between the light source 30 and the light-incident side 13 of the light guide plate 10, and more effectively reflects the light rays L1, L2, L3 scattered by the light source 30 to the outside to the light guide plate 10, so as to reduce light leakage and achieve better light energy utilization.

[0041] In order to easily assemble and position the optical film set 40 on the light- emitting surface 11 of the light guide plate 10, it can be assembled and positioned by the reflecting unit 20, or the light guide plate 10 combined with the reflecting unit 20 can be used to assemble and position the optical film set 40, and at least the following several combination structures can be achieved, which can be combined with the first embodiment shown in FIG. 1 to FIG. 3 or the second embodiment shown in FIG. 4 to FIG. 6, but not limited thereto.

[0042] In one combination structure of the embodiment shown in FIG. 7, a positioning step 213 is provided on the extending portion 212 of the first reflecting sheet 21, the positioning step 213 forms stepped protrusions 213a, 213b, the optical film 41 of the optical film set 40 sequentially forms positioning notches 42a, 42b corresponding to the width change of the positioning step 213, and the outermost optical film 41 can be provided with or without the positioning notch. As shown in FIG. 7 and FIG. 8, the protrusions 213a, 213b of the positioning step 213 correspond to and are fixed on the extending portion 212 respectively with the positioning notches 42a, 42b, and the adhesive element 2131 can be provided between the positioning step 213 and the outermost optical film 41, so that the optical film set 40 is assembled and positioned on the light-emitting surface 11 of the light guide plate 10 by the first reflecting sheet 21, and the first reflecting sheet 21 has the functions of providing support and positioning for the optical film set 40.

[0043] For example, the step-like protrusions 213a, 213b of the positioning step 213 gradually decrease in width, i.e., the protrusion 213a at the base of the positioning step 213 is the widest, and the protrusion 213b at the next step is the second widest. In the optical film set 40, the positioning notches 42a, 42b of the optical films 41 gradually decrease in size according to their distance from the light guide plate 10, i.e., the positioning notch 42a of the optical film 41 closest to the light guide plate 10 corresponds to the widest protrusion 213a at the base of the positioning step 213, and the positioning notch 42b of the optical film 41 second closest to the light guide plate 10 corresponds to the second widest protrusion 213b at the next step of the positioning step 213, and so on. Each optical film 41 has a corresponding positioning notch 42a, 42b that matches the protrusion 213a, 213b of the positioning step 213. The outermost optical film 41 is positioned on the outermost protrusion 213b. This achieves the effect of positioning each optical film 41 in the optical film set 40, and the effect of simplifying the assembly process.

[0044] In another combined structure of the embodiment shown in FIG. 9, the extension 212 of the first reflective sheet 21 has two positioning protrusions 214 at each end along the light entry side 13. The optical film set 40 has a positioning hole 43 corresponding to each positioning protrusion 214. The positioning protrusions 214 are respectively positioned through the positioning holes 43. The optical film set 40 is positioned and assembled on the light exit side 11 of the light guide plate 10 by the first reflective sheet 21. The first reflective sheet 21 provides support and positioning for the optical film set 40, and achieves the effect of simplifying the assembly process of the optical film set 40.

[0045] In the above embodiment shown in FIG. 9, the positioning protrusions 214 can further have a positioning recess 215 on the side facing the light guide plate 10. The light guide plate 10 has a positioning protrusion 14 corresponding to the positioning recess 215. The positioning recess 215 and the positioning protrusion 14 are combined to position the optical film set 40, the first reflective sheet 21, and the light guide plate 10 together, which improves the stability and support of the combination of the three.

[0046] In the embodiment shown in FIG. 10, the extension 212 of the first reflective sheet 21 has a set of holes 216 at each end along the light entry side 13. The optical film set 40 has an assembly hole 44 corresponding to each hole 216. The light guide plate 10 has an assembly protrusion 15 corresponding to each hole 216. The assembly protrusion 15 is positioned through the hole 216 of the extension 212 and the assembly hole 44 of the optical film 41. This makes it easy to assemble the optical film set 40, the first reflective sheet 21, and the light guide plate 10 together.

[0047] As shown in FIG. 11, an embodiment of the display device of the present application is disclosed, which comprises a backlight module 1 and a display panel 5, the specific component structure of the backlight module 1 has been described in the previous embodiments, which will not be repeated here, and the display panel 5 is arranged on the backlight module 1. In this embodiment, the backlight module 1 is provided with an optical film group 40 on the light exit surface 11 of the light guide plate 10, and the display panel 5 is arranged on the optical film group 40. The display panel 5 is a liquid crystal panel, the display panel 5 is provided with a light source 30 by the backlight module 1, and the light rays of the light source 30 which are not directly projected to the light entrance side 13 of the light guide plate 10 are reflected into the light guide plate 10 by the light reflection characteristics of the first reflecting sheet 21 of the reflecting unit 20, and the light reflection and shielding effects are provided by the extension part 212 on the edge area 112 of the light exit surface 11 of the light guide plate 10 adjacent to the light entrance side 13, so that the light rays projected to the edge area 112 are reflected back into the light guide plate 10, which effectively reduces the light leakage and hot spot and the like.

[0048] As shown in FIG. 11, the display panel 5 comprises a display area 51 and a black border area 52 located around the display area 51, and in the light exit surface 11 of the light guide plate 10, the area of the main light exit area 111 matches the range of the display area 51 of the display panel 5, and the edge area 112 located around the main light exit area 111 corresponds to the range of the black border area 52 located around the display area 51. Therefore, the optimized backlight module 1 can provide a good backlight source for the display panel 5, so that the display panel 5 can display a clear and bright picture under control, and the problem of poor appearance of the display device caused by light leakage and hot spot at the light exit position of the existing backlight module 1 is also overcome.

[0049] As shown in FIG. 12, another embodiment of the display device of the present application is disclosed, which further comprises a frame 6, and the backlight module 1 and the display panel 5 are arranged in the frame 6. The frame 6 comprises a back plate 61 and a side wall 62 protruding from the side of the back plate 61, the back plate 61 can carry the second reflecting sheet 22 of the reflecting unit 20 and the light guide plate 10 thereon, and the circuit substrate 31 of the light source 30 is attached to the side wall 62 by the adhesive 33, and the first reflecting sheet 21 is attached to the circuit substrate 31 by the attachment part 211, so that the side wall 62 of the frame 6 provides support and fixing effects for the light source 30 and the first reflecting sheet 21 of the reflecting unit 20.

[0050] As described above, in the present application, the attachment part 211 of the first reflecting sheet 21 of the reflecting unit 20 is directly attached to the light source 30, and the extension part 212 of the first reflecting sheet 21 extends above the light exit surface 11 of the light guide plate 10, so as to solve the hot spot phenomenon of the light source 30, which not only achieves the effect of convenient assembly, but also improves the light exit uniformity of the light guide plate 10.

[0051] Furthermore, in the present application, each embodiment can achieve the optimization of the support and fixing mechanism of the first reflective sheet, optical film sheet and other components of the reflection unit in the backlight module, and the combination architecture between the optical elements in the backlight module. In an embodiment of the present application, a positioning step is formed by the first reflective sheet located on the light entrance side of the light guide plate, so that the optical film sheet group is positioned by the first reflective sheet on the light exit surface of the light guide plate, thereby eliminating the risk of poor light emission surface of the backlight module caused by the additional positioning structure of the light guide plate for fixing the optical film sheet, and reducing the mold cost of the light guide plate. In another embodiment of the present application, the positioning and assembly of the first reflective sheet, optical film sheet and other components can be completed at the same time by using the assembly protrusions on the same light guide plate, thereby improving the assembly convenience and shortening the working hours.

[0052] In summary, the present application has the whole composition architecture of the reflection unit on the light entrance side of the light guide plate, which is more suitable for mass production. The positioning and assembly of the first reflective sheet, optical film sheet and other components are convenient, the light emission uniformity of the whole backlight module is improved, the rework and cleaning time caused by the poor assembly positioning of the multiple components and the residual of burrs and foreign matters is reduced, the product production yield is increased, and the additional improvement cost caused by the poor fixing structure of the light guide plate is avoided.

[0053] [Symbol Description] 1: backlight module 10: light guide plate 11: light exit surface 111: main light exit area 112: edge area 12: back surface 13: light entrance side 14: positioning protrusion 15: assembly protrusion 20: reflection unit 21: first reflective sheet 211: attached part 2111: perforation 212: extension part 213: positioning step 213a, 213b: protrusion 2131: adhesive element 214: positioning protrusion 215: positioning recess 216: assembly hole 22: second reflective sheet 23: adhesive member 30: light source 31: circuit substrate 32: light emitting element 33: adhesive member 40: optical film sheet group 41: optical film sheet 42a, 42b: positioning gap 43: positioning hole 44: assembly hole 5: display panel 51: display area 52: black border area L1, L2, L3: light ray 6: frame 61: back plate 62: side wall.

Claims

1. A backlight module with a folding design, comprising: a light guide plate, having opposite sides of an out-coupling surface and a back surface, the out-coupling surface and the back surface being connected to an in-coupling side respectively; a reflection unit, comprising a first reflection sheet, the first reflection sheet having an attachment portion and an extension portion, the attachment portion being located at the in-coupling side, the extension portion extending from the attachment portion along the out-coupling surface; and a light source, disposed at the in-coupling side of the light guide plate. The reflection unit further comprises a second reflection sheet, the second reflection sheet being disposed at the back surface of the light guide plate.

2. The backlight module with the folding design of claim 1, wherein, The first reflection sheet is connected to the second reflection sheet.

3. The backlight module with the folding design of claim 1, wherein, The extension portion of the first reflection sheet has a positioning step.

4. The backlight module with the folding design of claim 1, wherein, The backlight module with the folding design further comprises an optical film set, disposed at the out-coupling surface of the light guide plate, the optical film set having a plurality of optical films stacked in sequence, the optical films sequentially forming positioning gaps corresponding to a width variation of the positioning step, the positioning step and the positioning gaps corresponding to each other and being fixed on the extension portion. The extension portion of the first reflection sheet has two positioning protrusions at each end along the in-coupling side direction.

5. The backlight module with the folding design of claim 1, wherein, The backlight module with the folding design further comprises an optical film set, disposed at the out-coupling surface of the light guide plate, the optical film set having a plurality of optical films stacked in sequence, the plurality of optical films each having a positioning hole corresponding to a position of the positioning protrusion, the positioning protrusions being respectively positioned and penetrating the positioning holes. The side of the positioning protrusion facing the light guide plate forms a positioning recess, the light guide plate corresponding to the position of the positioning recess forms a positioning protrusion, and the positioning recess and the positioning protrusion are positioned and combined.

6. The backlight module with the folding design of the reflective sheet according to claim 5, wherein, The extension portion of the first reflection sheet has a set of holes at each end along the in-coupling side direction.

7. The reflector sheet having a folding design of the backlight module according to claim 1, wherein, The backlight module with the folding design further comprises an optical film set, disposed at the out-coupling surface of the light guide plate, the optical film set having a plurality of optical films stacked in sequence, the plurality of optical films each having an assembly hole corresponding to a position of the set of holes: The light guide plate corresponding to the position of the set of holes forms an assembly protrusion, the assembly protrusion is positioned and penetrates the set of holes of the extension portion and the assembly hole of the optical film. The light source comprises a circuit substrate and a plurality of light emitting elements disposed on the circuit substrate, the attachment portion corresponding to the position of each of the light emitting elements has a through hole, the attachment portion is fixedly disposed on the circuit substrate, and the light emitting elements respectively emit light to the in-coupling side through the through hole corresponding to the position.

8. The backlight module with the folding design of claim 1, wherein, A sticking member is disposed between the attachment portion and the circuit substrate.

9. The backlight module with the folding design of claim 8, wherein, 10.A display device, comprising: the backlight module with the folding design according to any one of claims 1 to 9; and a display panel, disposed on the backlight module with the folding design. ​ ​

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