Backlight module, display device and tiled display equipment

Abstract

The invention provides a backlight module, a display device and tiled display equipment, and the backlight module comprises a back plate which comprises a back plate main body and a bending part arranged at the edge of the back plate main body; the middle frame comprises a reflection part, the reflection part is arranged on the inner side, close to the backboard body, of the bending part, and an antireflection structure is formed on the part, away from the backboard body, of the reflection part; and the reflection part is at least arranged on the inner side, close to the backboard main body, of the bending part, and the reflection part and the reflection part jointly cover the inner side surface, close to the backboard main body, of the bending part. According to the backlight module, the display device and the tiled display equipment, the display effect of the display device and the tiled display equipment can be improved, and the material cost of the display device and the tiled display equipment can be reduced.

Description

Technical Field

[0001] This invention relates to the field of display technology, specifically to a backlight module, a display device, and a splicing display equipment. Background Technology

[0002] With the development of display technology, the requirements for the display effect of display devices are becoming increasingly higher. A video wall display device can include multiple display devices that can be placed close together. These devices can display a complete image together, or each device can display a complete image separately.

[0003] In existing technologies, when displaying images, bright bands appear at the splicing edges of the display devices in splicing display equipment, resulting in poor display effects for both the display devices and the splicing display equipment. Furthermore, the material costs for the display devices and splicing display equipment in existing technologies are relatively high. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes a backlight module, a display device and a splicing display equipment, which can improve the display effect of the display device and the splicing display equipment and reduce the material cost of the display device and the splicing display equipment.

[0005] To achieve the above objectives, the present invention provides a backlight module, comprising:

[0006] The back panel includes a back panel body and a bent portion disposed at the edge of the back panel body;

[0007] The middle frame includes a reflective portion, which is disposed on the inner side of the bent portion near the back panel body, and the portion of the reflective portion away from the back panel body forms an anti-reflection structure;

[0008] A reflective component is disposed at least on the inner side of the bent portion near the back plate body, and the reflective component and the reflective portion together cover the inner surface of the bent portion near the back plate body.

[0009] Optionally, the anti-reflection structure includes a plurality of protrusions and a plurality of recesses, wherein the plurality of protrusions and the plurality of recesses are alternately distributed on the inner surface of the reflective portion away from the bending portion.

[0010] Optionally, the plurality of protrusions and the plurality of recesses are divided into multiple groups of protrusions and recesses, and the multiple groups of protrusions and recesses are spaced apart along a first direction. Each group of protrusions and recesses includes a plurality of protrusions and a plurality of recesses that are alternately distributed along a second direction.

[0011] The first direction is the extension direction from one end of the reflective portion near the back plate body to the end of the reflective portion away from the back plate body, and the second direction is the extension direction of the reflective portion perpendicular to the first direction.

[0012] Optionally, the length of the protrusion protruding relative to the inner surface of the reflective part is greater than or equal to 0.5 mm and less than or equal to 1 mm; and / or, the length of the protrusion in the second direction is greater than or equal to 0.5 mm and less than or equal to 1 mm; and / or, the angle between the two sides of the protrusion in the first direction and the inner surface of the reflective part is greater than or equal to 30° and less than or equal to 60°.

[0013] The first direction is the extension direction of the reflective portion from one end of the reflective portion near the back plate body to the end of the reflective portion away from the back plate body body, and the second direction is the extension direction of the reflective portion perpendicular to the first direction.

[0014] Optionally, the anti-reflection structure includes a plurality of light-transmitting holes, which extend from the inner surface of the reflective portion away from the bending portion to the outer surface of the reflective portion near the bending portion, and the plurality of light-transmitting holes are spaced apart.

[0015] Optionally, the plurality of light-transmitting holes are divided into multiple groups of light-transmitting holes, and the multiple groups of light-transmitting holes are spaced apart along a first direction. Each group of light-transmitting holes includes a plurality of light-transmitting holes spaced apart along a second direction, and the light-transmitting holes of two adjacent groups of light-transmitting holes are staggered in the second direction.

[0016] The first direction is the extension direction from one end of the reflective portion near the back plate body to the end of the reflective portion away from the back plate body, and the second direction is the extension direction of the reflective portion perpendicular to the first direction.

[0017] Optionally, the aperture of the light-transmitting hole gradually increases in the first direction.

[0018] Optionally, the aperture of the light-transmitting hole is greater than or equal to 1.8 mm and less than or equal to 3.2 mm; and / or, the spacing between two adjacent light-transmitting holes in the same group of light-transmitting holes is greater than or equal to 6 mm and less than or equal to 10 mm; and / or the angle between the line connecting the radial cross-section centers of two adjacent light-transmitting holes in two adjacent groups of light-transmitting holes and the second direction is greater than or equal to 30° and less than or equal to 60°.

[0019] The first direction is the extension direction of the reflective portion from one end of the reflective portion near the back plate body to the end of the reflective portion away from the back plate body body, and the second direction is the extension direction of the reflective portion perpendicular to the first direction.

[0020] Optionally, the anti-reflection structure is formed between the first end of the reflective portion away from the back plate body and the position where the distance between the reflective portion and the first end is greater than or equal to 2 mm and less than or equal to 10 mm.

[0021] Optionally, the angle between the portion of the reflective part near the back plate body and the back plate body is greater than or equal to 85° and less than or equal to 90°.

[0022] Optionally, the reflective component is fitted to the inner surface of the bent portion; or,

[0023] A portion of the reflective component is attached to the inner surface of the bend, and another portion is attached to the inner surface of the backplate body near the bend; or...

[0024] The reflective component includes a first part, a second part, and a third part, wherein the first part is disposed on the inner side of the bent portion; the third part is disposed on the inner side of the back plate body near the bent portion; and the second part is located between the first part and the second part, and is integrally connected with both.

[0025] Optionally, the orthographic projection of the reflective component and the reflective portion on the inner surface of the bend at least partially overlaps.

[0026] Optionally, the length of the overlapping portion of the reflective component and the reflective part in a first direction is greater than or equal to 1 mm; the first direction is the extension direction of the reflective part from one end of the reflective part near the back plate body to the other end of the reflective part away from the back plate body.

[0027] Optionally, the reflective component may include a white oil coating or a reflective film.

[0028] Optionally, the thickness of the white oil coating is greater than or equal to 20 μm and less than or equal to 50 μm; and / or, the reflectivity of the white oil coating is greater than or equal to 85% and less than or equal to 97%.

[0029] Optionally, the middle frame further includes a middle frame body, which is disposed on the outer side of the bent portion away from the back panel body and connected to the end of the reflective portion away from the back panel body; the backlight module further includes an outer frame, which is disposed on the outer side of the middle frame body away from the bent portion.

[0030] A limiting structure is also provided between the middle frame body and the outer frame to restrict the outer frame from turning outward in a direction away from the middle frame body.

[0031] Optionally, the limiting structure includes a first limiting part disposed on the middle frame body and a second limiting part disposed on the outer frame, wherein the first limiting part and the second limiting part are engaged.

[0032] Optionally, the second limiting portion is a through hole formed in the outer frame;

[0033] The first limiting part is a hook disposed on the outer surface of the middle frame body away from the bending part. The hook passes through the through hole and is engaged with the outer surface of the outer frame away from the middle frame body.

[0034] Optionally, the hook includes a hook body passing through the through hole and a hook portion bent relative to the hook body, the hook portion abutting against the outer surface of the outer frame away from the middle frame body and located on the side of the through hole away from the back plate body.

[0035] Optionally, there are multiple bending portions, including first bending portions and second bending portions disposed on different side edges of the back panel body; the middle frame body includes a first sub-middle frame body and a second sub-middle frame body; the outer frame includes a first outer frame and a second outer frame; wherein,

[0036] The first sub-frame body is located on the outside of the first bent portion away from the back plate body, and is connected to the first end of the reflective portion away from the back plate body. The second end of the reflective portion is bent toward the inside of the first bent portion near the back plate body, and extends in the direction close to the back plate body.

[0037] The second sub-frame body is disposed on the end of the second bent portion away from the back plate body, and is connected to the first end of the other reflective portion away from the back plate body. The second end of the reflective portion bends toward the inner side of the second bent portion near the back plate body and extends in the direction close to the back plate body.

[0038] The first outer frame is disposed on the outer side of the first sub-frame body away from the first bend, and is fixedly connected to the first sub-frame body; the limiting structure is provided between the first sub-frame body and the first outer frame;

[0039] The second outer frame is disposed on the outer side of the second bend away from the back panel body and is fixedly connected to the second bend.

[0040] Optionally, the backlight module further includes a light-shielding structure, which is disposed on the outer side of the second bent portion away from the back panel body, and the light-shielding structure and the second outer frame together cover the outer surface of the second bent portion away from the back panel body.

[0041] The present invention also provides a display device including the backlight module as described in the present invention.

[0042] The present invention also provides a splicing display device, including a plurality of backlight modules as provided in the present invention, wherein the plurality of backlight modules are arranged in a direction parallel to the outer surface of the back panel body away from the bending portion.

[0043] Optionally, the splicing display device further includes a splicing frame, and a connecting structure is provided on the outer side of the back panel body of the backlight module away from the bent portion, and the backlight module is connected to the splicing frame through the connecting structure.

[0044] The present invention has the following beneficial effects:

[0045] The backlight module provided by this invention provides a reflective portion on the inner side of the bent portion near the back panel body, and a reflective component on at least the inner side of the bent portion near the back panel body, with the reflective component and the reflective portion jointly covering the inner surface of the bent portion near the back panel body. This allows light to be reflected towards the display panel used for displaying images, thereby replacing the reflective portion's function of reflecting light in the prior art. This reduces the material used in the reflective portion, thus lowering the material cost of the display device and splicing display equipment. Furthermore, by forming an anti-reflection structure on the portion of the reflective portion away from the back panel body, the backlight module provided by this invention reduces the intensity of light reflected from the reflective portion to the display panel compared to the prior art, thereby reducing the light intensity at the edge of the display panel and reducing or even eliminating bright bands at the edge of the display panel, thus improving the display effect of the display device and splicing display equipment.

[0046] The display device provided by the present invention can improve the display effect of the display device and the splicing display equipment by means of the backlight module provided by the present invention, and can reduce the material cost of the display device and the splicing display equipment.

[0047] The splicing display device provided by the present invention can improve the display effect of the display device and the splicing display device by means of the backlight module provided by the present invention, and can reduce the material cost of the display device and the splicing display device. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of one side of a backlight module and display device provided in an embodiment of the present invention;

[0049] Figure 2 This is a schematic diagram of the other side of a backlight module and display device provided in an embodiment of the present invention;

[0050] Figure 3A schematic diagram of diffuse reflection in an anti-reflection structure of a backlight module provided in an embodiment of the present invention;

[0051] Figure 4 A schematic diagram of a backlight module's reflective portion reflecting near the backplate body, provided in an embodiment of the present invention;

[0052] Figure 5 This is a schematic diagram of the structure of a backlight module with multiple recesses and multiple protrusions provided in an embodiment of the present invention;

[0053] Figure 6 A schematic diagram of a plurality of light-transmitting holes on one side of a backlight module provided in an embodiment of the present invention;

[0054] Figure 7 A schematic diagram of the structure of multiple light-transmitting holes on the other side of a backlight module provided in an embodiment of the present invention;

[0055] Figure 8 This is a schematic diagram of the structure of multiple light-transmitting holes in a backlight module provided in an embodiment of the present invention;

[0056] Figure 9 This is a schematic diagram of a reflective film on one side of a backlight module provided in an embodiment of the present invention;

[0057] Figure 10 A schematic diagram of a reflective film on the other side of a backlight module provided in an embodiment of the present invention;

[0058] Figure 11 This is a schematic diagram of another structure of a reflective film on one side of a backlight module, provided as an embodiment of the present invention.

[0059] Figure 12 This is a schematic diagram of another structure of a reflective film on the other side of a backlight module, provided in an embodiment of the present invention.

[0060] Figure 13 This is another structural schematic diagram of a reflective film on one side of a backlight module provided in an embodiment of the present invention;

[0061] Figure 14 This is a schematic diagram of another structure of a reflective film on the other side of a backlight module provided in an embodiment of the present invention;

[0062] Figure 15 This is a schematic diagram of another structure of a reflective film on one side of a backlight module provided in an embodiment of the present invention;

[0063] Figure 16 This is a schematic diagram of another structure of a reflective film on the other side of a backlight module provided in an embodiment of the present invention;

[0064] Figure 17 for Figure 1 A magnified structural diagram of part A in the middle;

[0065] Figure 18 This is a schematic diagram of the outer frame of a backlight module provided in an embodiment of the present invention;

[0066] Figure 19 for Figure 18 A magnified structural diagram of part B in the middle;

[0067] Figure 20 This is a schematic diagram of the structure of the middle frame of a backlight module provided in an embodiment of the present invention;

[0068] Figure 21 for Figure 20 A magnified structural diagram of part C in the middle;

[0069] Figure 22 This is a schematic diagram of the structure of the backlight module's mid-frame with the hooks facing the back panel body, provided in an embodiment of the present invention;

[0070] Figure 23 A comparison diagram of edge brightness curves of a display device and a prior art display device provided in an embodiment of the present invention;

[0071] Explanation of reference numerals in the attached figures:

[0072] 1-Back panel; 11-Back panel body; 12-Bending part; 12a-First bending part; 12b-Second bending part; 2-Middle frame; 21-Reflective part; 211-Anti-reflective structure; 2111-Protrusion; 2112-Recess; 2113-Light transmission hole; 22-Middle frame body; 22a-First sub-middle frame body; 22b-Second sub-middle frame body; 221-Hook; 2211-Hook body; 2212-Hook part; 2213-Chamfer; 23-Reinforcing part; 3-Reflective component; 31-First part; 32-Second part; 33-Third part; 4-Outer frame; 4a-First outer frame; 4b-Second outer frame; 41-Through hole; 5-Light shielding structure; 61-Light source; 62-Substrate; 63-Double-sided adhesive; 71-Display panel; 72-Optical film; 73-Diffuser plate; 74-Backlight driving module; 81-Spacer; 82-Screw. Detailed Implementation

[0073] To enable those skilled in the art to better understand the technical methods of the present invention, the backlight module, display device, and splicing display equipment provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0074] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a backlight module, including: a back plate 1, including a back plate body 11 and a bent portion 12 disposed on the edge of the back plate body 11; a middle frame 2, including a reflective portion 21, the reflective portion 21 being disposed on the inner side of the bent portion 12 near the back plate body 11, and the portion of the reflective portion 21 away from the back plate body 11 forming an anti-reflection structure 211; and a reflective component 3, at least disposed on the inner side of the bent portion 12 near the back plate body 11, and the reflective component 3 and the reflective portion 21 together cover the inner surface of the bent portion 12 near the back plate body 11.

[0075] The backlight module provided in this embodiment of the invention provides a reflective portion 21 on the inner side of the bent portion 12 near the back panel body 11, and a reflective component 3 is provided at least on the inner side of the bent portion 12 near the back panel body 11. The reflective component 3 and the reflective portion 21 together cover the inner surface of the bent portion 12 near the back panel body 11. The reflective component 3 and the reflective portion 21 together reflect light towards the display panel 71 used to display images. Thus, the reflective component 3 can replace part of the light reflection function of the reflective portion 21 in the prior art, thereby reducing the material used of the reflective portion 21 and reducing the material cost of the display device and splicing display equipment. Furthermore, the backlight module provided in this embodiment of the invention forms an anti-reflection structure 211 on the part of the reflective portion 21 away from the back panel body 11, which can reduce the light intensity reflected by the reflective portion 21 to the display panel 71 compared with the prior art. This can reduce the light intensity at the edge of the display panel 71, thereby reducing or even eliminating the bright band at the edge of the display panel 71, and thus improving the display effect of the display device and splicing display equipment.

[0076] Specifically, the edge of the back panel body 11 may be provided with a bent portion 12. The bent portion 12 can be bent relative to the back panel body 11. The side of the bent portion 12 closer to the back panel body 11 is the inner side of the bent portion 12, and the side of the bent portion 12 away from the back panel body 11 is the outer side of the bent portion 12. The side of the back panel body 11 closer to the bent portion 12 is the inner side of the back panel body 11, and the side of the back panel body 11 away from the bent portion 12 is the outer side of the back panel body 11. In practical applications, a light source 61 may be provided on the inner side of the back panel body 11, and a display panel 71 may be provided on the opposite side of the inner surface of the back panel body 11. The display panel 71 may be connected to the backlight module. A portion of the light emitted by the light source 61 may be directly directed toward the opposite side of the back panel body 11, thereby directly reaching the display panel 71. Another portion of the light emitted by the light source 61 may be directed toward the surrounding area of ​​the light source 61, and a portion of the light directed toward the surrounding area of ​​the light source 61 may be directed toward the inner surface of the bent portion 12.

[0077] By providing a reflective portion 21 on the inner side of the bent portion 12 near the back panel body 11, and providing a reflective component 3 on at least the inner side of the bent portion 12 near the back panel body 11, and by having the reflective component 3 and the reflective portion 21 together cover the inner surface of the bent portion 12 near the back panel body 11, the light incident on the inner surface of the bent portion 12 can be reflected towards the display panel 71 located opposite the back panel body 11 by means of the reflective component 3 and the reflective portion 21. Specifically, the reflective component 3 can be disposed on the inner side of the portion of the bent portion 12 near the back panel body 11 (i.e., the portion of the bent portion 12 away from the display panel 71), covering the inner surface of the portion of the bent portion 12 near the back panel body 11. The reflective component 21 can be disposed on the inner side of the portion of the bent portion 12 away from the back panel body 11 (i.e., the portion of the bent portion 12 near the display panel 71), covering the inner surface of the portion of the bent portion 12 away from the back panel body 11. The reflective component 3 can reflect light incident on the inner surface of the portion of the bent portion 12 near the back panel body 11 toward the display panel 71, and the reflective component 21 can reflect light incident on the inner surface of the portion of the bent portion 12 away from the back panel body 11 toward the display panel 71. Compared to the prior art where the reflective part 21 is only provided on the inner side of the bending part 12 near the back panel body 11, and the light incident on the inner surface of the bending part 12 is reflected to the display panel 71 only by the reflective part 21, the reflective part 3 and the reflective part 21 can be used together to reflect the light incident on the inner surface of the bending part 12 to the display panel 71. Thus, the reflective part 3 can replace part of the light reflection function of the reflective part 21 in the prior art, thereby reducing the material used for the reflective part 21 and thus reducing the material cost of the display device and splicing display equipment.

[0078] By forming an anti-reflection structure 211 on the part of the reflective portion 21 away from the back panel body 11 (i.e., the part of the reflective portion 21 close to the display panel 71), light incident on the part of the reflective portion 21 away from the back panel body 11 can be reflected back to the display panel 71 by the anti-reflection structure 211. Compared with the prior art, which directly reflects light incident on the part of the reflective portion 21 away from the back panel body 11 to the display panel 71 through the reflective portion 21, the intensity of light reflected from the reflective portion 21 to the display panel 71 can be reduced, thereby reducing the light intensity at the edge of the display panel 71. Consequently, the bright band at the edge of the display panel 71 can be reduced or even eliminated, thereby improving the display effect of the display device and the splicing display equipment.

[0079] Optionally, the back panel body 11 and / or the bent portion 12 may be plate-shaped.

[0080] Optionally, the material of the back panel 1 may include galvanized steel or aluminum alloy.

[0081] Optionally, the thickness of the back panel body 11 and / or the bent portion 12 can range from 0.8 mm to 1.5 mm.

[0082] Optionally, the back panel 1 can be a one-piece structure.

[0083] Optionally, the backplate 1 can be formed by die stamping.

[0084] In practical applications, the backplate 1 serves as the main support structure for the backlight module, providing the main support for the backlight module.

[0085] like Figure 1 and Figure 2 As shown, optionally, the backlight module may also include a light source 61, which may be disposed on the inner surface of the back panel body 11.

[0086] Optionally, the light source 61 can be in the shape of a strip.

[0087] Optionally, the light source 61 may include a light-emitting diode (LED).

[0088] like Figure 1 and Figure 2 As shown, optionally, the backlight module may also include a substrate 62, which may be disposed on the inner surface of the back panel body 11, and the light source 61 may be disposed on the inner surface of the substrate 62 away from the back panel body 11.

[0089] Optionally, the substrate 62 may be made of aluminum.

[0090] Optionally, the substrate 62 can be bonded to the inner surface of the backplate body 11.

[0091] Optionally, the substrate 62 can be bonded to the inner surface of the backplate body 11 using double-sided adhesive 63.

[0092] Optionally, the material of the middle frame 2 may include polycarbonate (abbreviated as PC, also known as PC plastic).

[0093] Optionally, the middle frame 2 can be white. This can help the reflective part 21 reflect light.

[0094] Optionally, the middle frame 2 can be injection molded.

[0095] like Figures 1-5 As shown, in one embodiment of the present invention, the anti-reflection structure 211 may include a plurality of protrusions 2111 and a plurality of recesses 2112, which are alternately distributed on the inner surface of the reflective portion 21 away from the bent portion 12.

[0096] With this design, when light shines on the inner surface of the reflective part 21 away from the bending part 12, the multiple protrusions 2111 and multiple concave parts 2112 can diffusely reflect the light, thereby reducing the intensity of the light reflected from the reflective part 21 to the display panel 71.

[0097] In one embodiment of the present invention, a plurality of protrusions 2111 and a plurality of recesses 2112 can be divided into a plurality of groups of protrusions and recesses, and the plurality of groups of protrusions and recesses are spaced apart along a first direction. Each group of protrusions and recesses includes a plurality of protrusions 2111 and a plurality of recesses 2112 that are alternately distributed along a second direction. The first direction is the extension direction from one end of the reflective part 21 near the back plate body 11 to one end of the reflective part 21 away from the back plate body 11, and the second direction is the extension direction of the reflective part 21 perpendicular to the first direction.

[0098] In other words, multiple rows of raised and recessed sections can be arranged in the first direction, and each row of raised and recessed sections can include multiple raised portions 2111 and multiple recessed portions 2112 that are alternately distributed in the second direction. This design can improve the diffuse reflection effect of the multiple raised portions 2111 and multiple recessed portions 2112 of the anti-reflection structure 211, thereby further reducing the intensity of light reflected from the reflective portion 21 to the display panel 71.

[0099] Optionally, the length of the protrusion 2111 relative to the inner surface of the reflective portion 21 (e.g., Figure 5 The length h (as shown) can be greater than or equal to 0.5 mm and less than or equal to 1 mm.

[0100] Optionally, the length of the protrusion 2111 in the second direction (e.g.) Figure 5 The length w (as shown) can be greater than or equal to 0.5 mm and less than or equal to 1 mm.

[0101] Optionally, the angles between the two sides of the protrusion 2111 in the first direction and the inner surface of the reflector 21 (e.g.) Figure 5 The angle (as shown in angle b) can be greater than or equal to 30° and less than or equal to 60°. That is, the two sides of the protrusion 2111 in the first direction are inclined relative to the inner surface of the reflector 21.

[0102] Optionally, the protrusion 2111 may be toothed.

[0103] like Figure 6 and Figure 7 As shown, in one embodiment of the present invention, the anti-reflection structure 211 may include a plurality of light-transmitting holes 2113, which extend from the inner surface of the reflective part 21 away from the bent part 12 to the outer surface of the reflective part 21 near the bent part 12, and the plurality of light-transmitting holes 2113 are distributed at intervals.

[0104] With this design, when light shines on the inner surface of the reflective part 21 away from the bending part 12, the light can pass through the light-transmitting hole 2113 from the inner surface of the reflective part 21 away from the bending part 12 to the outer surface of the reflective part 21 near the bending part 12 without being reflected by the reflective part 21. This reduces the reflective area of ​​the reflective part 21 and weakens the intensity of the light reflected from the reflective part 21 to the display panel 71.

[0105] like Figures 6-8 As shown, in one embodiment of the present invention, the plurality of light-transmitting holes 2113 can be divided into multiple groups of light-transmitting holes. The multiple groups of light-transmitting holes are spaced apart along a first direction. Each group of light-transmitting holes includes a plurality of light-transmitting holes 2113 spaced apart along a second direction. The light-transmitting holes 2113 of two adjacent groups of light-transmitting holes are staggered in the second direction. The first direction is the extension direction from one end of the reflective part 21 near the back plate body 11 to the end of the reflective part 21 away from the back plate body 11. The second direction is the extension direction of the reflective part 21 perpendicular to the first direction.

[0106] In other words, multiple rows of light-transmitting holes can be arranged in the first direction. Each row of light-transmitting holes can include multiple light-transmitting holes 2113 spaced apart in the second direction, and the positions of each light-transmitting hole 2113 correspond to the positions of two adjacent light-transmitting holes 2113 in another row of light-transmitting holes. This design can improve the diffuse reflection effect of the multiple protrusions 2111 and multiple recesses 2112 of the anti-reflection structure 211, thereby further reducing the intensity of light reflected from the reflective part 21 to the display panel 71.

[0107] like Figure 8 As shown, in one embodiment of the present invention, the aperture of the light-transmitting hole 2113 can gradually increase in the first direction.

[0108] In other words, the aperture of the light-transmitting hole 2113 is larger the further away from the back panel body 11, that is, the aperture of the light-transmitting hole 2113 is larger the closer to the display panel 71. This design can make the reflective area of ​​the part of the reflective part 21 closer to the display panel 71 smaller, thereby further reducing the intensity of the light reflected from the reflective part 21 to the display panel 71.

[0109] Optionally, the aperture of the light-transmitting hole 2113 is greater than or equal to 1.8 mm and less than or equal to 3.2 mm (e.g., Figure 8 (As shown in the diagram, the aperture X, aperture Y, and aperture Z are calibers).

[0110] Optionally, the spacing between two adjacent light-transmitting holes 2113 in the same group of light-transmitting holes is greater than or equal to 6 mm and less than or equal to 10 mm (e.g., Figure 8 (The hole spacing S is shown in the figure).

[0111] Optionally, the angle between the radial cross-section center line of two adjacent light-transmitting holes 2113 in two adjacent light-transmitting hole groups and the second direction is greater than or equal to 30° and less than or equal to 60° (e.g., Figure 8 (As shown by angle c).

[0112] Table 1 below takes the multiple light-transmitting holes 2113 as divided into three groups of light-transmitting holes as an example, and gives specific example parameters of the light-transmitting holes 2113 in the three groups of light-transmitting holes, as well as the degree of brightness of the edge of the display device under different parameters. The three groups of light-transmitting holes are the upper light-transmitting hole group furthest from the back plate body 11, the lower light-transmitting hole group closest to the back plate body 11, and the middle light-transmitting hole group located between the upper and lower light-transmitting hole groups in the first direction. If the brightness of the bright band is obvious, it means that the display effect of the display device is poor, and if the brightness of the bright band is not obvious, it means that the display effect of the display device is good.

[0113]

[0114] Table 1

[0115] In one embodiment of the present invention, the anti-reflection structure 211 may be formed between the first end of the reflective portion 21 away from the back plate body 11 and the position of the reflective portion 21 at a distance greater than or equal to 2 mm and less than or equal to 10 mm from the first end.

[0116] In other words, the anti-reflection structure 211 can be set from the first end of the reflective part 21 away from the back panel body 11 to a position where the distance between the reflective part 21 and the first end is greater than or equal to 2 mm and less than or equal to 10 mm. That is, the anti-reflection structure 211 can be set from the first end of the reflective part 21 away from the back panel body 11 and the setting of the anti-reflection structure 211 can end at a position where the distance between the reflective part 21 and the first end is greater than or equal to 2 mm and less than or equal to 10 mm.

[0117] In one embodiment of the present invention, the angle between the portion of the reflective part 21 near the back plate body 11 and the back plate body 11 (e.g., Figure 4 The angle (as shown in angle a) can be greater than or equal to 85° and less than or equal to 90°.

[0118] Compared with existing technologies, this design increases the angle between the portion of the reflective part 21 near the back panel body 11 and the back panel body 11, making the portion of the reflective part 21 near the back panel body 11 nearly perpendicular to the back panel body 11. Compared with existing technologies, this design allows light reflected from the portion of the reflective part 21 near the back panel body 11 to the display panel 71 to travel a longer path before reaching the display panel 71. This further reduces the intensity of light reflected from the reflective part 21 to the display panel 71, thereby further reducing the light intensity at the edge of the display panel 71. Consequently, it further reduces or even eliminates the bright band at the edge of the display panel 71, thereby further improving the display effect of the display device and splicing display equipment.

[0119] In other words, the reflective portion 21 has a portion away from the back panel body 11 and a portion close to the back panel body 11. The portion of the reflective portion 21 away from the back panel body 11 can be formed with an anti-reflection structure 211. Compared with the prior art, the intensity of light reflected by the reflective portion 21 to the display panel 71 can be reduced by means of the anti-reflection structure 211. The angle between the portion of the reflective portion 21 close to the back panel body 11 and the back panel body 11 can be greater than or equal to 85° and less than or equal to 90°. Compared with the prior art, the intensity of light reflected by the reflective portion 21 to the display panel 71 can also be reduced. Thus, compared with the prior art, the intensity of light reflected by the reflective portion 21 as a whole to the display panel 71 is reduced.

[0120] like Figure 4 As shown, optionally, the angle between the portion of the reflective part 21 near the back plate body 11 and the back plate body 11 can be equal to 90°.

[0121] In other words, the portion of the reflective part 21 near the back plate body 11 can be perpendicular to the back plate body 11.

[0122] In one embodiment of the present invention, the reflective component 3 may be attached to the inner surface of the bent portion 12.

[0123] This design allows the reflective component 3 to reflect light rays directed toward the inner surface of the bent portion 12.

[0124] like Figures 1-4 As shown, in one embodiment of the present invention, a portion of the reflective component 3 may be attached to the inner surface of the bent portion 12, and another portion may be attached to the inner surface of the back plate body 11 near the bent portion 12.

[0125] For example, the reflective component 3 can be attached to the inner surface of the bent portion 12 and extend along the inner surface of the bent portion 12 toward the back panel body 11, and bend and attach to the inner surface of the back panel body 11 at the connection between the bent portion 12 and the back panel body 11. This design can increase the area of ​​the reflective component 3, thereby enabling the reflective component 3 to reflect light incident on the inner surface of the bent portion 12 and light incident on the back panel body 11 near the inner surface of the bent portion 12.

[0126] like Figures 1-4 As shown, optionally, the portion of the reflective component 3 that is attached to the inner surface of the backplate body 11 can extend to the underside of the substrate 62.

[0127] like Figures 9-16 As shown, in one embodiment of the present invention, the reflective component 3 may include a first part 31, a second part 32 and a third part 33, wherein the first part 31 is disposed on the inner side of the bent part 12; the third part 33 is disposed on the inner side of the back plate body 11 near the bent part 12; and the second part 32 is located between the first part 31 and the second part 32 and is integrally connected with the two.

[0128] For example, the first part 31 can be attached to the inner surface of the reflective part 21 away from the bending part 12. That is, the first part 31 can be attached to the inner surface of the portion of the reflective part 21 that is nearly perpendicular to the back plate body 11 and does not have an anti-reflection structure 211 formed thereon. Alternatively, the first part 31 can be disposed between the reflective part 21 and the bending part 12. The third part 33 can be attached to the inner surface of the substrate 62 or the inner surface of the back plate body 11. The second part 32 is located between the first part 31 and the second part 32, and is integrally connected to the first part 31 and the second part 32, respectively. This design can further increase the area of ​​the reflective component 3, thereby enabling further reflection of light incident on the inner surface of the bending part 12 and light incident on the back plate body 11 near the inner surface of the bending part 12 by means of the reflective component 3.

[0129] like Figures 9-16 As shown, optionally, the second part 32 may be tilted relative to the first part 31 and the third part 33.

[0130] Compared to the design where the second part 32 is perpendicular to the first part 31 and the third part 33, this design allows the light reflected from the second part 32 to be reflected at an angle toward the display panel 71. This enables the light reflected from the second part 32 to reach the display panel 71 via a shorter path, thereby increasing the intensity of the light reflected from the reflective part 21 to the display panel 71. This, in turn, allows the image displayed on the display panel 71 to have sufficient brightness. Furthermore, it reduces the amount of material used in the second part 32, thereby reducing the amount of material used in the reflective component 3 and ultimately lowering the material cost of the display device and the splicing display equipment.

[0131] like Figures 1-4 and Figures 9-16 As shown, in one embodiment of the present invention, the reflective member 3 may at least partially overlap with the orthographic projection of the reflective part 21 on the inner surface of the bent part 12.

[0132] This design can prevent light rays that hit the inner surface of the bending portion 12 from being unable to be reflected by the reflective component 3 or the reflective component 21, so that all light rays hitting the inner surface of the bending portion 12 can be reflected by the reflective component 3 or the reflective component 21.

[0133] Optionally, the length of the overlapping portion of the reflective component 3 and the reflective part 21 in the first direction can be greater than or equal to 1 mm; the first direction is the extension direction of the reflective part 21 from one end of the reflective part 21 close to the back plate body 11 to the other end of the reflective part 21 away from the back plate body 11.

[0134] like Figures 9-16 As shown, in one embodiment of the present invention, the reflective component 3 may include a reflective film.

[0135] like Figures 9-16 As shown, in practical applications, the reflective film may include a first part 31, a second part 32, and a third part 33. For example... Figure 9 and Figure 10 As shown, the first part 31 can be attached to the inner surface of the portion of the reflective part 21 near the backplate body 11, the third part 33 can be attached to the inner surface of the substrate 62, and the second part 32 can be located between the first part 31 and the second part 32, and integrated with both. Alternatively, as... Figure 11 and Figure 12 As shown, the first part 31 can be attached to the inner surface of the portion of the reflective part 21 near the back plate body 11, the third part 33 can be attached to the inner surface of the back plate body 11, and the second part 32 can be located between the first part 31 and the second part 32, and integrated with both. Alternatively, as... Figure 13 and Figure 14As shown, the first part 31 can be disposed between the reflective part 21 and the bent part 12, the third part 33 can be attached to the inner surface of the substrate 62, and the second part 32 can be located between the first part 31 and the second part 32, and be integrated with both. Alternatively, as... Figure 15 and Figure 16 As shown, the first part 31 can be disposed between the reflective part 21 and the bent part 12, the third part 33 can be attached to the inner surface of the back panel body 11, and the second part 32 can be located between the first part 31 and the second part 32, and be integrated with the two.

[0136] In practical applications, the first part 31 of the reflective film can be pasted to the inner surface of the part of the reflective part 21 near the back plate body 11, and the third part 33 can be pasted to the inner surface of the substrate 62 or the inner surface of the back plate body 11. When the first part 31 of the reflective film is disposed between the reflective part 21 and the bent part 12, it is not necessary to paste it to the reflective part 21 and the bent part 12.

[0137] like Figures 1-4 As shown, in one embodiment of the present invention, the reflective component 3 may include a white oil coating.

[0138] In practical applications, the white oil coating has a lower material cost and will not interfere with the reflective part 21.

[0139] like Figures 1-4 As shown, in practical applications, the white oil coating can be applied to the inner surface of the bent portion 12 and extend along the inner surface of the bent portion 12 toward the back plate body 11, and bend and apply to the inner surface of the back plate body 11 at the connection between the bent portion 12 and the back plate body 11.

[0140] Optionally, the thickness of the white oil coating can be greater than or equal to 20 μm and less than or equal to 50 μm.

[0141] Optionally, the reflectivity of the white oil coating can be greater than or equal to 85% and less than or equal to 97%.

[0142] like Figure 1 and Figure 17 As shown, in one embodiment of the present invention, the middle frame 2 may further include a middle frame body 22, which is disposed on the outer side of the bent portion 12 away from the back plate body 11 and connected to the end of the reflective portion 21 away from the back plate body 11; the backlight module may further include an outer frame 4, which is disposed on the outer side of the middle frame body 22 away from the bent portion 12; a limiting structure may also be provided between the middle frame body 22 and the outer frame 4 to restrict the outer frame 4 from turning outward in a direction away from the middle frame body 22.

[0143] In practical applications, a diffuser plate 73 can be provided on the middle frame body 22, an optical film 72 can be provided on the diffuser plate 73, a display panel 71 can be provided on the optical film 72, and an outer frame 4 can be provided on the outer side of the middle frame body 22 away from the bending part 12, and can abut against the top edge of the display panel 71 and can be connected to the bending part 12. Thus, the display panel 71, the optical film 72 and the diffuser plate 73 can be fixed on the top of the backlight module by means of the outer frame 4 and the middle frame body 22.

[0144] The backlight module provided in this embodiment of the invention, by setting a limiting structure between the middle frame body 22 and the outer frame 4, restricts the outer frame 4 from turning outward in a direction away from the middle frame body 22. This prevents light emitted by the light source 61 from leaking out through the gap between the outer frame 4 and the middle frame body 22 due to the gap between the outer frame 4 and the middle frame body 22. This improves the edge light leakage of the display device and the splicing display equipment, and further reduces or even eliminates the bright band at the edge of the display panel 71, thereby further improving the display effect of the display device and the splicing display equipment.

[0145] Optionally, the material of the outer frame 4 may include stainless steel (SUS) or hot-dip galvanized aluminum alloy (SGLC).

[0146] Optionally, the thickness of the outer frame 4 can be greater than or equal to 0.2 mm and less than or equal to 0.3 mm.

[0147] Optionally, the outer frame 4 can be formed by stamping with a mold.

[0148] like Figure 1 and Figure 2 As shown, optionally, the outer frame 4 and the bent portion 12 can be fixed by screws 82.

[0149] In one embodiment of the present invention, the limiting structure may include a first limiting part disposed on the middle frame body 22 and a second limiting part disposed on the outer frame 4, wherein the first limiting part and the second limiting part are engaged.

[0150] In practical applications, when assembling the middle frame 2 and the outer frame 4, the first limiting part of the middle frame body 22 can be engaged with the second limiting part of the outer frame 4, thereby limiting the outer frame 4 from turning outward away from the middle frame body 22 by means of the engagement of the first limiting part with the second limiting part.

[0151] like Figures 17-21 As shown, in one embodiment of the present invention, the second limiting part is a through hole 41 formed in the outer frame 4; the first limiting part is a hook 221 provided on the outer surface of the middle frame body 22 away from the bending part 12, the hook 221 passes through the through hole 41 and is engaged on the outer surface of the outer frame 4 away from the middle frame body 22.

[0152] In practical applications, when assembling the middle frame 2 and the outer frame 4, by passing the hook 221, which is located on the outer surface of the middle frame body 22 away from the bending part 12, through the through hole 41 formed in the outer frame 4, the hook 221 can be located on the outer side of the outer frame 4 away from the middle frame body 22, and the hook 221 can be engaged with the outer surface of the outer frame 4 away from the middle frame body 22. When the outer frame 4 is turned outward in the direction away from the middle frame body 22, the hook 221 and the outer surface of the outer frame 4 away from the middle frame body 22 will generate a relative force, thereby using the hook 221 to engage and limit the outer frame 4, and thus restrict the outer frame 4 from turning outward in the direction away from the middle frame body 22.

[0153] like Figure 17 , Figure 20 and Figure 21 As shown, in one embodiment of the present invention, the hook 221 may include a hook body 2211 passing through the through hole 41 and a hook portion 2212 bent relative to the hook body 2211. The hook portion 2212 abuts against the outer surface of the outer frame 4 away from the middle frame body 22 and is located on the side of the through hole 41 away from the back plate body 11.

[0154] In other words, after the hook 221 passes through the through hole 41, both the hook body 2211 and the hook portion 2212 are located on the outside of the outer frame 4. The hook portion 2212 abuts against the outer surface of the outer frame 4, thus limiting the outer frame 4. This design facilitates the hook 221 passing through the through hole 41 formed in the outer frame 4.

[0155] However, the hook 2212 is not limited to being located on the side of the through hole 41 away from the back plate body 11, for example, as Figure 22 As shown, the hook 2212 can also be located on the side of the through hole 41 near the back plate body 11.

[0156] like Figure 1 and Figure 17 As shown, optionally, the outer frame 4 may have a first protrusion and a first recess. The first recess fits into the middle frame body 22 and forms a through hole 41. The first protrusion is away from the middle frame body 22 relative to the recess. The hook 221 can approach the middle frame body 22 relative to the outer side of the first protrusion away from the middle frame body 22.

[0157] This design allows the hook 221 to be engaged on the outer surface of the first recess away from the main body 22 of the middle frame. The hook 221 will not protrude relative to the outer side of the outer frame 4, thereby avoiding the hook 221 from affecting the splicing of multiple backlight modules.

[0158] like Figure 17 , Figure 21 and Figure 22As shown, optionally, the outer surface of the hook 2212 away from the middle frame body 22 is provided with a chamfer 2213.

[0159] Optionally, chamfer 2213 can be a straight chamfer 2213.

[0160] Optionally, the length of the right-angled side of the chamfer 2213 can be greater than or equal to 0.3 mm and less than or equal to 0.5 mm.

[0161] Optionally, the distance between the outer surface of the hook 2212 and the outer surface of the first protrusion (e.g.) Figure 17 The center spacing (Pp) can be greater than or equal to 0.5 mm.

[0162] Optionally, the distance between the outer surface of the first protrusion and the inner surface of the first recess (e.g.) Figure 19 The center spacing (P) can be greater than or equal to 1.5 mm and less than or equal to 2.5 mm.

[0163] Optionally, the diameter of the through hole 41 in the first direction (e.g.) Figure 19 The diameter (G) shown can be greater than or equal to 2 mm and less than or equal to 2.5 mm.

[0164] Optionally, the length of the hook 221 in the first direction (e.g.) Figure 21 The length (g) can be greater than or equal to 1.5 mm and less than or equal to 2 mm.

[0165] Optionally, the length of the hook 221 relative to the outer surface of the middle frame body 22 away from the bend 12 (as shown by length p in the figure) can be greater than or equal to 1.1 mm and less than or equal to 2.1 mm.

[0166] like Figure 1 and Figure 2As shown, in one embodiment of the present invention, there may be multiple bending portions 12, including first bending portions 12a and second bending portions 12b disposed on different side edges of the back panel body 11; the middle frame body 22 may include a first sub-middle frame body 22a and a second sub-middle frame body 22b; the outer frame 4 may include a first outer frame 4a and a second outer frame 4b; wherein, the first sub-middle frame body 22a is disposed on the outer side of the first bending portion 12a away from the back panel body 11, and is connected to the first end of the reflective portion 21 away from the back panel body 11, and the second end of the reflective portion 21 bends toward the inner side of the first bending portion 12a near the back panel body 11, and extends in the direction close to the back panel body 11; the second sub-middle frame body 22a is disposed on the outer side of the first bending portion 12a away from the back panel body 11, and is connected to the first end of the reflective portion 21 away from ... The frame body 22b is located on the end of the second bent portion 12b away from the back panel body 11, and is connected to the first end of another reflective portion 21 away from the back panel body 11. The second end of the reflective portion 21 bends toward the inner side of the second bent portion 12b near the back panel body 11 and extends in the direction close to the back panel body 11. The first outer frame 4a is located on the outer side of the first sub-frame body 22a away from the first bent portion 12a and is fixedly connected to the first sub-frame body 22a. A limiting structure is provided between the first sub-frame body 22a and the first outer frame 4a. The second outer frame 4b is located on the outer side of the second bent portion 12b away from the back panel body 11 and is fixedly connected to the second bent portion 12b.

[0167] In other words, in practical applications, there can be multiple bending portions 12. Multiple bending portions 12 can be set on different side edges of the back panel body 11. Each bending portion 12 can be provided with a reflective portion 21 and an outer frame 4. Each reflective portion 21 can reflect the light from the light source 61 directed towards the corresponding bending portion 12. Each outer frame 4 can be connected to the corresponding bending portion 12. Multiple outer frames 4 can be used to fix the display panel 71 together, thus fixing the display panel 71 to the backlight module.

[0168] like Figure 1 As shown, optionally, the backlight module may also include a backlight driving module 74, which may be disposed between the first bending portion 12a and the first outer frame 4a. The backlight driving module 74 is connected to the light source 61 and is used to drive the light source 61 to emit light.

[0169] like Figure 1 As shown, optionally, the backlight module may also include a spacer 81, which may be disposed between the first bending portion 12a and the backlight driving module 74, and contact the first bending portion 12a and the backlight driving module 74 respectively.

[0170] like Figure 1 As shown, optionally, the middle frame 2 may also include a reinforcing part 23, which may be disposed between the first bending part 12a and the first outer frame 4a and connected to the first sub-middle frame body 22a.

[0171] This design is necessary because a backlight driving module 74 needs to be installed between the first bending portion 12a and the first outer frame 4a. Therefore, a large space is required between the first bending portion 12a and the first outer frame 4a. By providing a reinforcing portion 23 between the first bending portion 12a and the first outer frame 4a, the structural strength of the backlight module on the side where the first bending portion 12a and the first outer frame 4a are located can be strengthened by the reinforcing portion 23.

[0172] like Figure 2 As shown, in one embodiment of the present invention, the backlight module may further include a light-shielding structure 5, which is disposed on the outer side of the second bending portion 12b away from the back panel body 11, and the light-shielding structure 5 and the second outer frame 4b together cover the outer surface of the second bending portion 12b away from the back panel body 11.

[0173] This design is because there is no need to set a backlight driving module 74 between the second bending part 12b and the second outer frame 4b. Therefore, the second outer frame 4b can contact the outer surface of the second bending part 12b. The second bending part 12b and the second outer frame 4b have sufficient structural strength. Therefore, the light-shielding function of the second outer frame 4b can be replaced by the light-shielding structure 5, thereby reducing the material used in the second outer frame 4b and further reducing the material cost of the display device and splicing display equipment.

[0174] like Figure 2 As shown, optionally, the light-shielding structure 5 may include a black oil coating applied to the outer surface of the second bend 12b.

[0175] This design allows the color of the outer surface of the second bend 12b to match the color of the second outer frame 4b. On the other hand, it eliminates the need for the light-shielding structure 5 to be connected to the second bend 12b via connecting components. Compared with existing technologies, this design saves on connecting components between the second outer frame 4b and the portion of the second bend 12b coated with black oil. Consequently, it not only reduces the material costs of the display device and splicing display equipment but also reduces the labor assembly costs of the display device and splicing display equipment.

[0176] like Figure 2 As shown, optionally, the second bent portion 12b may have a second recessed portion and a second protruding portion, the second outer frame 4b may have a third recessed portion and a third protruding portion, the third recessed portion may contact the outer surface of the second recessed portion, the third protruding portion may contact the outer surface of the second sub-frame body 22b, and a light-shielding structure 5 may be provided on the outer side of the second protruding portion.

[0177] like Figure 1 and Figure 2 As shown, embodiments of the present invention also provide a display device, including a backlight module as provided in embodiments of the present invention.

[0178] The display device provided in this embodiment of the invention can improve the display effect of the display device and the splicing display equipment by means of the backlight module provided in this embodiment of the invention, and can reduce the material cost of the display device and the splicing display equipment.

[0179] Optionally, the display device may also include a display panel 71, which may be disposed on the opposite side of the inner surface of the back panel body 11 and connected to the backlight module.

[0180] Optionally, the display device can be used as the display device for the splicing display equipment.

[0181] like Figure 23 As shown, Figure 23 This is a comparison diagram of the edge brightness curve of a display device in the prior art and the edge brightness curve of the display device provided in the embodiments of the present invention. During actual display, when the relative brightness is greater than 1, the image appears brighter. Relative brightness refers to the ratio of the display brightness value at one location on the display panel 71 to the average of the display brightness values ​​at multiple locations on the display panel 71. The average of the display brightness values ​​at multiple locations on the display panel 71 represents the overall display brightness of the display panel 71. If the relative brightness at one location on the display panel 71 is greater than 1, it indicates that that location on the display panel 71 is brighter relative to the overall display panel 71; the greater the relative brightness at one location on the display panel 71 is than 1, the brighter that location on the display panel 71 is relative to the overall display panel 71. If the relative brightness at one location on the display panel 71 is less than 1, it indicates that that location on the display panel 71 is darker relative to the overall display panel 71; the smaller the relative brightness at one location on the display panel 71 is than 1, the darker that location on the display panel 71 is relative to the overall display panel 71.

[0182] like Figure 23 As shown, existing display devices exhibit noticeable bright bands in areas with a relative brightness greater than 1 in the 10mm-45mm range from the edge of the display device. In contrast, the display device provided in this embodiment exhibits significantly lower relative brightness in the same 10mm-45mm range compared to existing display devices. This indicates that the bright bands at the edges of the display device provided in this embodiment are reduced or even eliminated, resulting in a significant improvement in display performance. Furthermore, the brightness uniformity of the display device provided in this embodiment in the 10mm-50mm range from the edge of the display device is significantly better than that of existing display devices. In other words, the brightness and darkness of the display device provided in this embodiment are more uniform in this range compared to existing technologies, further demonstrating the significant improvement in display performance.

[0183] This invention also provides a splicing display device, including a plurality of backlight modules as provided in this invention embodiment, wherein the plurality of backlight modules are arranged along a direction parallel to the outer surface of the back panel body 11 away from the bending portion 12.

[0184] The splicing display device provided in this embodiment of the invention can improve the display effect of the display device and the splicing display device by means of the backlight module provided in this embodiment of the invention, and can reduce the material cost of the display device and the splicing display device.

[0185] In practical applications, the direction parallel to the outer surface of the back panel body 11 away from the bending portion 12 includes the relative direction between the first outer frame 4a and the second outer frame 4b, and the direction perpendicular to the relative direction between the first outer frame 4a and the second outer frame 4b (i.e., the second direction). Multiple backlight modules can be closely attached along the direction parallel to the outer surface of the back panel body 11 away from the bending portion 12, without necessarily needing to be glued or connected. For example, in the relative direction between the first outer frame 4a and the second outer frame 4b, the two sides of one backlight module can be closely attached to the other two backlight modules one by one. The outer surface of the first outer frame 4a of the backlight module can be closely attached to the outer surface of the second outer frame 4b of the adjacent backlight module and part of the outer surface of the bending portion 12. The outer surface of the second outer frame 4b of the backlight module and part of the outer surface of the bending portion 12 can be closely attached to the first outer frame 4a of the adjacent backlight module.

[0186] In one embodiment of the present invention, the splicing display device may further include a splicing frame, and a connecting structure is provided on the outer side of the back panel body 11 of the backlight module away from the bending portion 12, and the backlight module is connected to the splicing frame through the connecting structure.

[0187] In practical applications, multiple backlight modules can be connected to the splicing frame through their respective connection structures, and two adjacent backlight modules can be placed close to each other to form a splicing display device.

[0188] Optionally, the connection structure may include threaded holes. The splicing frame may be provided with multiple through holes. By passing screws through the through holes of the splicing frame and threading them into the threaded holes of the backlight modules, the backlight modules can be connected to the splicing frame. By passing multiple screws through the multiple through holes one by one and threading them into the threaded holes of the multiple backlight modules one by one, multiple backlight modules can be connected to the splicing frame.

[0189] In summary, the backlight module, display device, and splicing display equipment provided by the embodiments of the present invention can improve the display effect of the display device and splicing display equipment, and reduce the material cost of the display device and splicing display equipment.

[0190] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A backlight module, characterized in that, include: The back panel includes a back panel body and a bent portion disposed at the edge of the back panel body; The middle frame includes a reflective portion, which is disposed on the inner side of the bent portion near the back panel body, and the portion of the reflective portion away from the back panel body forms an anti-reflection structure; A reflective component is disposed at least on the inner side of the bent portion near the back plate body, and the reflective component and the reflective portion together cover the inner surface of the bent portion near the back plate body.

2. The backlight module according to claim 1, characterized in that, The anti-reflection structure includes multiple protrusions and multiple recesses, which are alternately distributed on the inner surface of the reflective portion away from the bending portion.

3. The backlight module according to claim 2, characterized in that, The plurality of protrusions and the plurality of recesses are divided into multiple groups of protrusions and recesses, and the multiple groups of protrusions and recesses are spaced apart along a first direction. Each group of protrusions and recesses includes a plurality of protrusions and a plurality of recesses that are alternately distributed along a second direction. The first direction is the extension direction from one end of the reflective portion near the back plate body to the end of the reflective portion away from the back plate body, and the second direction is the extension direction of the reflective portion perpendicular to the first direction.

4. The backlight module according to claim 2 or 3, characterized in that, The length of the protrusion relative to the inner surface of the reflective part is greater than or equal to 0.5 mm and less than or equal to 1 mm; and / or, the length of the protrusion in the second direction is greater than or equal to 0.5 mm and less than or equal to 1 mm; and / or, the angle between the two sides of the protrusion in the first direction and the inner surface of the reflective part is greater than or equal to 30° and less than or equal to 60°. The first direction is the extension direction of the reflective portion from one end of the reflective portion near the back plate body to the end of the reflective portion away from the back plate body body, and the second direction is the extension direction of the reflective portion perpendicular to the first direction.

5. The backlight module according to claim 1, characterized in that, The anti-reflection structure includes multiple light-transmitting holes, which extend from the inner surface of the reflective part away from the bending part to the outer surface of the reflective part near the bending part, and the multiple light-transmitting holes are distributed at intervals.

6. The backlight module according to claim 5, characterized in that, The plurality of light-transmitting holes are divided into multiple groups of light-transmitting holes, and the multiple groups of light-transmitting holes are spaced apart along a first direction. Each group of light-transmitting holes includes a plurality of light-transmitting holes spaced apart along a second direction, and the light-transmitting holes of two adjacent groups of light-transmitting holes are staggered in the second direction. The first direction is the extension direction from one end of the reflective portion near the back plate body to the end of the reflective portion away from the back plate body, and the second direction is the extension direction of the reflective portion perpendicular to the first direction.

7. The backlight module according to claim 6, characterized in that, The aperture of the light-transmitting hole gradually increases in the first direction.

8. The backlight module according to any one of claims 5-7, characterized in that, The aperture of the light-transmitting hole is greater than or equal to 1.8 mm and less than or equal to 3.2 mm; and / or the spacing between two adjacent light-transmitting holes in the same group of light-transmitting holes is greater than or equal to 6 mm and less than or equal to 10 mm; and / or the angle between the line connecting the radial cross-section centers of two adjacent light-transmitting holes in two adjacent groups of light-transmitting holes and the second direction is greater than or equal to 30° and less than or equal to 60°. The first direction is the extension direction of the reflective portion from one end of the reflective portion near the back plate body to the end of the reflective portion away from the back plate body body, and the second direction is the extension direction of the reflective portion perpendicular to the first direction.

9. The backlight module according to claim 1, characterized in that, The anti-reflection structure is formed between the first end of the reflective part away from the main body of the back plate and the position where the distance between the reflective part and the first end is greater than or equal to 2 mm and less than or equal to 10 mm.

10. The backlight module according to claim 1, characterized in that, The angle between the portion of the reflective part near the back plate body and the back plate body is greater than or equal to 85° and less than or equal to 90°.

11. The backlight module according to claim 1, characterized in that, The reflective component is fitted to the inner surface of the bent portion; or... A portion of the reflective component is attached to the inner surface of the bend, and another portion is attached to the inner surface of the backplate body near the bend; or... The reflective component includes a first part, a second part, and a third part, wherein the first part is disposed on the inner side of the bent portion; the third part is disposed on the inner side of the back plate body near the bent portion; and the second part is located between the first part and the second part, and is integrally connected with both.

12. The backlight module according to claim 1 or 11, characterized in that, The orthographic projections of the reflective component and the reflective portion on the inner surface of the bent portion at least partially overlap.

13. The backlight module according to claim 12, characterized in that, The length of the overlapping portion of the reflective component and the reflective part in a first direction is greater than or equal to 1 mm; the first direction is the extension direction of the reflective part from one end of the reflective part near the back plate body to one end of the reflective part away from the back plate body.

14. The backlight module according to claim 1, characterized in that, The reflective component includes a white oil coating or a reflective film.

15. The backlight module according to claim 14, characterized in that, The thickness of the white oil coating is greater than or equal to 20 μm and less than or equal to 50 μm; and / or, the reflectivity of the white oil coating is greater than or equal to 85% and less than or equal to 97%.

16. The backlight module according to claim 1, characterized in that, The middle frame further includes a middle frame body, which is disposed on the outer side of the bent portion away from the back plate body and connected to the end of the reflective portion away from the back plate body; the backlight module further includes an outer frame, which is disposed on the outer side of the middle frame body away from the bent portion. A limiting structure is also provided between the middle frame body and the outer frame to restrict the outer frame from turning outward in a direction away from the middle frame body.

17. The backlight module according to claim 16, characterized in that, The limiting structure includes a first limiting part disposed on the middle frame body and a second limiting part disposed on the outer frame, wherein the first limiting part and the second limiting part are engaged.

18. The backlight module according to claim 17, characterized in that, The second limiting part is a through hole formed in the outer frame; The first limiting part is a hook disposed on the outer surface of the middle frame body away from the bending part. The hook passes through the through hole and is engaged with the outer surface of the outer frame away from the middle frame body.

19. The backlight module according to claim 18, characterized in that, The hook includes a hook body passing through the through hole and a hook portion bent relative to the hook body. The hook portion abuts against the outer surface of the outer frame away from the middle frame body and is located on the side of the through hole away from the back plate body.

20. The backlight module according to claim 16, characterized in that, The bending portion is multiple, including a first bending portion and a second bending portion disposed on different side edges of the back panel body; the middle frame body includes a first sub-middle frame body and a second sub-middle frame body; the outer frame includes a first outer frame and a second outer frame; wherein... The first sub-frame body is located on the outside of the first bent portion away from the back plate body, and is connected to the first end of the reflective portion away from the back plate body. The second end of the reflective portion is bent toward the inside of the first bent portion near the back plate body, and extends in the direction close to the back plate body. The second sub-frame body is disposed on the end of the second bent portion away from the back plate body, and is connected to the first end of the other reflective portion away from the back plate body. The second end of the reflective portion bends toward the inner side of the second bent portion near the back plate body and extends in the direction close to the back plate body. The first outer frame is disposed on the outer side of the first sub-frame body away from the first bend, and is fixedly connected to the first sub-frame body; the limiting structure is provided between the first sub-frame body and the first outer frame; The second outer frame is disposed on the outer side of the second bend away from the back panel body and is fixedly connected to the second bend.

21. The backlight module according to claim 20, characterized in that, The backlight module also includes a light-shielding structure, which is disposed on the outer side of the second bent portion away from the back panel body, and the light-shielding structure and the second outer frame together cover the outer surface of the second bent portion away from the back panel body.

22. A display device, characterized in that, Includes the backlight module as described in any one of claims 1-21.

23. A splicing display device, characterized in that, It includes a plurality of backlight modules as described in any one of claims 1-21, wherein the plurality of backlight modules are arranged in a direction parallel to the outer surface of the back panel body away from the bending portion.

24. The splicing display device according to claim 23, characterized in that, The splicing display device also includes a splicing frame, and a connecting structure is provided on the outer side of the back panel body of the backlight module away from the bending part, and the backlight module is connected to the splicing frame through the connecting structure.

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