Backlight module, display device and tiled display equipment

Abstract

The utility model provides a backlight module, a display device and a tiled display device, the backlight module comprises a back plate, and the back plate 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 splicing display equipment, the display effect of the display device and the splicing display equipment can be improved, and the material cost of the display device and the splicing display equipment can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of display technology, and in particular to a backlight module, a display device and a spliced ​​display equipment. Background Art

[0002] With the development of display technology, the display effect requirements of display devices are getting higher and higher. A spliced ​​display device can include multiple display devices, which can be placed closely together and can display a complete image together or separately.

[0003] In the prior art, when the display device of the spliced ​​display device displays an image, a bright band appears at the spliced ​​edge of the display device, resulting in poor display effects of the display device and the spliced ​​display device. In addition, in the prior art, the material cost of the display device and the spliced ​​display device is high. Utility Model Content

[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 spliced ​​display device, which can improve the display effect of the display device and the spliced ​​display device, and can reduce the material cost of the display device and the spliced ​​display device.

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

[0006] A backboard, comprising a backboard body and a bent portion arranged at an edge of the backboard body;

[0007] The middle frame includes a reflective portion, the reflective portion is arranged on the inner side of the bent portion close to the back plate body, and an anti-reflection structure is formed on a portion of the reflective portion away from the back plate body;

[0008] The reflective component is at least arranged on the inner side of the bent portion close to the back plate body, and the reflective component and the reflective portion jointly cover the inner side surface of the bent portion close to the back plate body.

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

[0010] Optionally, the plurality of convex portions and the plurality of concave portions are divided into a plurality of concave-convex groups, the plurality of concave-convex groups are spaced apart along the first direction, and each of the concave-convex groups includes a plurality of convex portions and a plurality of concave portions alternately distributed along the second direction;

[0011] The first direction is an extending direction from an end of the reflecting portion close to the back plate body to an end of the reflecting portion away from the back plate body, and the second direction is an extending direction of the reflecting portion perpendicular to the first direction.

[0012] Optionally, the protrusion of the convex portion relative to the inner surface of the reflective portion has a length greater than or equal to 0.5 mm and less than or equal to 1 mm; and / or the length of the convex portion in the second direction has a length greater than or equal to 0.5 mm and less than or equal to 1 mm; and / or the angles between the two side surfaces of the convex portion in the first direction and the inner surface of the reflective portion are both greater than or equal to 30° and less than or equal to 60°.

[0013] The first direction is an extension direction of the reflective portion from an end of the reflective portion close to the back plate body to an end of the reflective portion away from the back plate body, and the second direction is an 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 an inner surface of the reflective portion away from the bending portion to an outer surface of the reflective portion close to the bending portion, and the plurality of light-transmitting holes are distributed at intervals.

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

[0016] The first direction is an extending direction from an end of the reflecting portion close to the back plate body to an end of the reflecting portion away from the back plate body, and the second direction is an extending direction of the reflecting 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 center line of the radial cross-section 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 an extension direction of the reflective portion from an end of the reflective portion close to the back plate body to an end of the reflective portion away from the back plate body, and the second direction is an extension direction of the reflective portion perpendicular to the first direction.

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

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

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

[0023] A portion of the reflective component is attached to the inner surface of the bent portion, and another portion is attached to the inner surface of the back plate body close to the bent portion; or,

[0024] The reflective component includes a first part, a second part and a third part, wherein the first part is arranged on the inner side of the bending portion; the third part is arranged on the inner side of the back panel body close to the bending portion; the second part is located between the first part and the second part, and is connected to the two as a whole.

[0025] Optionally, the reflective component and the reflective portion have an orthographic projection on the inner surface of the bending portion that at least partially overlap.

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

[0027] Optionally, the reflective component includes 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 arranged 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 arranged on the outer side of the middle frame body away from the bent portion;

[0030] A limiting structure is further provided between the middle frame body and the outer frame, for limiting the outer frame from turning outward in a direction away from the middle frame body.

[0031] Optionally, the limiting structure includes a first limiting portion provided on the middle frame body, and a second limiting portion provided on the outer frame, and the first limiting portion is engaged with the second limiting portion.

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

[0033] The first limiting portion is a hook provided on the outer surface of the middle frame body away from the bending portion. The hook passes through the through hole and is clamped on 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 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 panel body.

[0035] Optionally, the bending portion is multiple and includes a first bending portion and a second bending portion provided 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-middle frame body is disposed on an outer side of the first bending portion away from the back panel body and is connected to a first end of the reflecting portion away from the back panel body. The second end of the reflecting portion is bent toward an inner side of the first bending portion close to the back panel body and extends in a direction close to the back panel body.

[0037] The second sub-middle frame body is arranged on a side of the end of the second bent portion away from the back panel body, and is connected to the first end of the other reflecting portion away from the back panel body. The second end of the reflecting portion is bent toward the inner side of the second bent portion close to the back panel body and extends in a direction close to the back panel body.

[0038] The first outer frame is arranged on the outer side of the first sub-middle frame body away from the first bending portion and is fixedly connected to the first sub-middle frame body; the limiting structure is provided between the first sub-middle frame body and the first outer frame;

[0039] The second outer frame is arranged on the outer side of the second bending portion away from the back plate body and is fixedly connected to the second bending portion.

[0040] Optionally, the backlight module further includes a shading structure, which is arranged on the outer side of the second bending portion away from the back panel body, and the shading structure and the second outer frame jointly cover the outer surface of the second bending portion away from the back panel body.

[0041] The present invention also provides a display device, comprising the backlight module provided by the present invention.

[0042] The present invention further provides a spliced ​​display device, comprising a plurality of the backlight modules provided by 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, 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 via the connecting structure.

[0044] The utility model has the following beneficial effects:

[0045] The backlight module provided by the present invention, by arranging a reflecting portion on the inner side of the bending portion close to the back panel body, and at least arranging a reflecting component on the inner side of the bending portion close to the back panel body, and making the reflecting component and the reflecting portion jointly cover the inner surface of the bending portion close to the back panel body, can reflect light toward the display panel for displaying images with the help of the reflecting component and the reflecting portion, thereby being able to replace the reflecting portion in the prior art for partially playing the role of reflecting light, thereby being able to reduce the material used for the reflecting portion, thereby being able to reduce the material cost of the display device and the spliced ​​display equipment, and the backlight module provided by the present invention, by forming an anti-reflection structure on the portion of the reflecting portion away from the back panel body, thereby being able to reduce the intensity of light reflected from the reflecting portion to the display panel compared with the prior art, thereby being able to reduce the intensity of light at the edge of the display panel, thereby being able to reduce the bright band situation at the edge of the display panel, thereby being able to improve the display effect of the display device and the spliced ​​display equipment.

[0046] The display device provided by the present invention can improve the display effect of the display device and the spliced ​​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 spliced ​​display equipment.

[0047] The spliced ​​display device provided by the present invention can improve the display effects of the display device and the spliced ​​display device by means of the backlight module provided by the present invention, and can reduce the material costs of the display device and the spliced ​​display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic structural diagram of one side of a backlight module and a display device provided by an embodiment of the present utility model;

[0049] Figure 2 A schematic structural diagram of the other side of a backlight module and a display device provided by an embodiment of the present utility model;

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

[0051] Figure 4 A schematic diagram of a reflective portion of a backlight module provided by an embodiment of the present invention being close to a back panel body for reflection;

[0052] Figure 5 A schematic structural diagram of multiple concave portions and multiple convex portions of a backlight module provided by an embodiment of the present utility model;

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

[0054] Figure 7 A schematic structural diagram of multiple light-transmitting holes on the other side of a backlight module provided by an embodiment of the present utility model;

[0055] Figure 8 A schematic structural diagram of multiple light-transmitting holes of a backlight module provided by an embodiment of the present utility model;

[0056] Figure 9 A schematic structural diagram of a reflective film on one side of a backlight module provided by an embodiment of the present utility model;

[0057] Figure 10 A schematic structural diagram of a reflective film on the other side of a backlight module provided by an embodiment of the present utility model;

[0058] Figure 11 This is another structural schematic diagram of a reflective film on one side of a backlight module provided by an embodiment of the present utility model;

[0059] Figure 12 This is another structural schematic diagram of a reflective film on the other side of a backlight module provided by an embodiment of the present utility model;

[0060] Figure 13 A schematic diagram of another structure of a reflective film on one side of a backlight module provided by an embodiment of the present utility model;

[0061] Figure 14 A schematic diagram of another structure of a reflective film on the other side of a backlight module provided by an embodiment of the present utility model;

[0062] Figure 15 A schematic diagram of another structure of a reflective film on one side of a backlight module provided by an embodiment of the present utility model;

[0063] Figure 16 A schematic diagram of another structure of a reflective film on the other side of a backlight module provided by an embodiment of the present utility model;

[0064] Figure 17 for Figure 1 Schematic diagram of the enlarged structure of the part A in the middle;

[0065] Figure 18 A schematic structural diagram of an outer frame of a backlight module provided in an embodiment of the present utility model;

[0066] Figure 19 for Figure 18 Schematic diagram of the enlarged structure of the part B in the middle;

[0067] Figure 20 A schematic structural diagram of a middle frame of a backlight module provided by an embodiment of the present utility model;

[0068] Figure 21 for Figure 20 Schematic diagram of the enlarged structure of the local C in the middle;

[0069] Figure 22 A schematic structural diagram of a backlight module provided by an embodiment of the present invention, wherein the hook of the middle frame faces the back panel body;

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

[0071] Description of reference numerals:

[0072] 1-back panel; 11-back panel body; 12-bending portion; 12a-first bending portion; 12b-second bending portion; 2-middle frame; 21-reflecting portion; 211-anti-reflection structure; 2111-convex portion; 2112-concave portion; 2113-light-transmitting hole; 22-middle frame body; 22a-first sub-middle frame body; 22b-second sub-middle frame body; 221-hook; 2211-hook body; 2212-hook portion; 2213-chamfer; 23-reinforcement 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 tape; 71-display panel; 72-optical film; 73-diffuser plate; 74-backlight driver module; 81-spacer; 82-screw. DETAILED DESCRIPTION

[0073] In order to enable those skilled in the art to better understand the technical aspects of the present invention, the backlight module, display device and spliced ​​display equipment provided by the present invention are described in detail below with reference to the accompanying drawings.

[0074] like Figure 1 and Figure 2As shown, an embodiment of the utility model provides a backlight module, comprising: a back panel 1, comprising a back panel main body 11 and a bending portion 12 arranged at the edge of the back panel main body 11; a middle frame 2, comprising a reflecting portion 21, the reflecting portion 21 is arranged on the inner side of the bending portion 12 close to the back panel main body 11, and the portion of the reflecting portion 21 away from the back panel main body 11 is formed with an anti-reflection structure 211; a reflecting component 3, at least arranged on the inner side of the bending portion 12 close to the back panel main body 11, and the reflecting component 3 and the reflecting portion 21 jointly cover the inner surface of the bending portion 12 close to the back panel main body 11.

[0075] The backlight module provided by the embodiment of the present invention is provided with a reflective portion 21 on the inner side of the bending portion 12 close to the back panel main body 11, and a reflective component 3 is provided at least on the inner side of the bending portion 12 close to the back panel main body 11, and the reflective component 3 and the reflective portion 21 jointly cover the inner surface of the bending portion 12 close to the back panel main body 11, and the reflective component 3 and the reflective portion 21 can jointly reflect light toward the display panel 71 for displaying images, thereby being able to replace the reflective portion 21 in the prior art with the reflective component 3 to partially reflect light, thereby being able to reduce The material used in the reflective portion 21 is reduced, thereby reducing the material cost of the display device and the spliced ​​display equipment. In addition, the backlight module provided by the embodiment of the utility model can form an anti-reflection structure 211 on the part of the reflective portion 21 away from the back panel body 11, so that the intensity of light reflected from the reflective portion 21 to the display panel 71 can be weakened compared with the prior art, thereby weakening the light intensity at the edge of the display panel 71, and then the bright band at the edge of the display panel 71 can be weakened or even eliminated, thereby improving the display effect of the display device and the spliced ​​display equipment.

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

[0077] By arranging a reflecting portion 21 on the inner side of the bending portion 12 close to the back panel main body 11, and arranging a reflecting component 3 at least on the inner side of the bending portion 12 close to the back panel main body 11, and making the reflecting component 3 and the reflecting portion 21 jointly cover the inner surface of the bending portion 12 close to the back panel main body 11, the reflecting component 3 and the reflecting portion 21 can jointly reflect the light directed to the inner surface of the bending portion 12 toward the display panel 71 arranged opposite to the back panel main body 11. Specifically, the reflecting component 3 can be arranged on the inner side of the part of the bending portion 12 close to the back panel body 11 (that is, the part of the bending portion 12 away from the display panel 71), covering the inner surface of the part of the bending portion 12 close to the back panel body 11, and the reflecting portion 21 can be arranged on the inner side of the part of the bending portion 12 away from the back panel body 11 (that is, the part of the bending portion 12 close to the display panel 71), covering the inner surface of the part of the bending portion 12 away from the back panel body 11. The reflecting component 3 can reflect the light directed to the inner surface of the part of the bending portion 12 close to the back panel body 11 toward the display panel 71, and the reflecting portion 21 can reflect the light directed to the inner surface of the part of the bending portion 12 away from the back panel body 11 toward the display panel 71. Compared with the prior art in which the reflecting portion 21 is only provided on the inner side of the bending portion 12 close to the back panel body 11, and the light directed toward the inner surface of the bending portion 12 is reflected toward the display panel 71 only through the reflecting portion 21, the reflecting component 3 and the reflecting portion 21 can jointly reflect the light directed toward the inner surface of the bending portion 12 toward the display panel 71, thereby being able to replace the reflecting portion 21 in the prior art with the reflecting component 3 to partially reflect the light, thereby being able to reduce the material used for the reflecting portion 21, and thereby being able to reduce the material cost of the display device and the spliced ​​display equipment.

[0078] By forming an anti-reflection structure 211 on the part of the reflecting part 21 away from the back panel body 11 (i.e., the part of the reflecting part 21 close to the display panel 71), the light directed to the part of the reflecting part 21 away from the back panel body 11 can be reflected by the anti-reflection structure 211 toward the display panel 71. Compared with the prior art that directly reflects the light directed to the part of the reflecting part 21 away from the back panel body 11 toward the display panel 71 through the reflecting part 21, the intensity of the light reflected from the reflecting part 21 to the display panel 71 can be weakened, thereby weakening the light intensity at the edge of the display panel 71, and then the bright band at the edge of the display panel 71 can be weakened or even eliminated, thereby improving the display effect of the display device and the spliced ​​display equipment.

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

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

[0081] Optionally, the thickness of the back plate body 11 and / or the bent portion 12 may be in the range of 0.8 mm to 1.5 mm.

[0082] Optionally, the back plate 1 may be an integrated structure.

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

[0084] In practical applications, the back plate 1 serves as the main supporting structure of the backlight module and provides the main support for the backlight module.

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

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

[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 further include a substrate 62 . The substrate 62 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 material of the substrate 62 may include aluminum.

[0090] Optionally, the substrate 62 may be bonded to the inner surface of the back panel body 11 .

[0091] Optionally, the substrate 62 may be bonded to the inner surface of the back panel body 11 by a double-sided adhesive tape 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 may be white, which can facilitate the reflection of light by the reflective portion 21 .

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

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

[0096] With this design, when light is directed toward the inner surface of the reflective portion 21 away from the bending portion 12 , the multiple protrusions 2111 and the multiple recesses 2112 can diffusely reflect the light, thereby reducing the intensity of the light reflected from the reflective portion 21 to the display panel 71 .

[0097] In one embodiment of the present invention, multiple protrusions 2111 and multiple concave portions 2112 can be divided into multiple groups of concave-convex groups, and the multiple groups of concave-convex groups are arranged at intervals along the first direction, and each group of concave-convex groups includes multiple protrusions 2111 and multiple concave portions 2112 alternately distributed along the second direction; the first direction is the extension direction from one end of the reflecting portion 21 close to the back panel body 11 to the end of the reflecting portion 21 away from the back panel body 11, and the second direction is the extension direction of the reflecting portion 21 perpendicular to the first direction.

[0098] That is, multiple rows of concave-convex groups can be arranged in the first direction, and each row of concave-convex groups can include multiple convex portions 2111 and multiple concave portions 2112 alternately distributed in the second direction. This design can enhance the diffuse reflection effect of the multiple convex portions 2111 and multiple concave 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 protrusion 2111 is protruded relative to the inner surface of the reflective portion 21 by a length (eg Figure 5 The length h) 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 (eg Figure 5 The length w) 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 side surfaces of the convex portion 2111 in the first direction and the inner surface of the reflective portion 21 (eg Figure 5 The angles (shown as angles b) can be greater than or equal to 30° and less than or equal to 60°. That is, the two side surfaces of the convex portion 2111 in the first direction are inclined relative to the inner surface of the reflective portion 21.

[0102] Optionally, the protrusion 2111 may be tooth-shaped.

[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 reflecting portion 21 away from the bending portion 12 to the outer surface of the reflecting portion 21 close to the bending portion 12, and the plurality of light-transmitting holes 2113 are distributed at intervals.

[0104] With such a design, when light is directed toward the inner surface of the reflecting part 21 away from the bending part 12, the light can pass through the light-transmitting hole 2113 from the inner surface of the reflecting part 21 away from the bending part 12 to the outer surface of the reflecting part 21 close to the bending part 12 without being reflected by the reflecting part 21, thereby reducing the reflection area of ​​the reflecting part 21 and further weakening the intensity of the light reflected by the reflecting part 21 to the display panel 71.

[0105] like Figure 6-Figure 8 As shown, in one embodiment of the present invention, a plurality of light-transmitting holes 2113 can be divided into a plurality of light-transmitting hole groups, and the plurality of light-transmitting hole groups are arranged at intervals along a first direction, and each light-transmitting hole group includes a plurality of light-transmitting holes 2113 arranged at intervals along a second direction, and the light-transmitting holes 2113 of two adjacent light-transmitting hole groups are staggered in the second direction; the first direction is an extension direction from one end of the reflecting portion 21 close to the back panel body 11 to an end of the reflecting portion 21 away from the back panel body 11, and the second direction is an extension direction of the reflecting portion 21 perpendicular to the first direction.

[0106] That is, multiple rows of light-transmitting hole groups can be arranged in the first direction, and each row of light-transmitting hole groups can include multiple light-transmitting holes 2113 spaced apart in the second direction, with each light-transmitting hole 2113 corresponding to a position between two adjacent light-transmitting holes 2113 in another row of light-transmitting hole groups. This design can enhance the diffuse reflection effect of the multiple protrusions 2111 and the multiple recesses 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.

[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 portion of the reflective portion 21 closer to the display panel 71 smaller, thereby further reducing the intensity of the light reflected from the reflective portion 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 (shown as pore diameter X, pore diameter Y and pore diameter Z).

[0110] Optionally, the hole spacing between two adjacent light-transmitting holes 2113 in the same light-transmitting hole group 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).

[0111] Optionally, the angle between the radial cross-section center line of two adjacent light-transmitting holes 2113 of 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 (shown at angle c).

[0112] Table 1 below takes the division of multiple light-transmitting holes 2113 into three groups of light-transmitting hole groups as an example, and gives specific example parameters of the light-transmitting holes 2113 in the three groups of light-transmitting hole groups, as well as the obviousness of the bright bands on the edge of the display device when visually observed under different parameters. The three groups of light-transmitting hole groups are an upper light-transmitting hole group farthest from the back panel body 11, a lower light-transmitting hole group closest to the back panel body 11, and a middle light-transmitting hole group located between the upper light-transmitting hole group and the lower light-transmitting hole group in the first direction. If the obviousness of the bright band is obvious, it indicates that the display effect of the display device is poor, and if the obviousness of the bright band is not obvious, it indicates that the display effect of the display device is better.

[0113]

[0114] Table 1

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

[0116] That is to say, the anti-reflection structure 211 can be set from the first end of the reflecting portion 21 away from the back panel body 11 to the position where the reflecting portion 21 is greater than or equal to 2 mm and less than or equal to 10 mm away from the first end, that is, the anti-reflection structure 211 can be set starting from the first end of the reflecting portion 21 away from the back panel body 11, and the setting of the anti-reflection structure 211 can be ended at the position where the reflecting portion 21 is greater than or equal to 2 mm and less than or equal to 10 mm away from the first end.

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

[0118] Compared with the prior art, this design increases the angle between the part of the reflecting part 21 close to the back panel body 11 and the back panel body 11, so that the part of the reflecting part 21 close to the back panel body 11 is close to perpendicular to the back panel body 11. Compared with the prior art, the light reflected from the part of the reflecting part 21 close to the back panel body 11 to the display panel 71 needs to pass through a longer path before it can reach the display panel 71, thereby further weakening the intensity of the light reflected from the reflecting part 21 to the display panel 71, and further weakening the light intensity at the edge of the display panel 71, and further weakening or even eliminating the bright band at the edge of the display panel 71, thereby further improving the display effect of the display device and the spliced ​​display equipment.

[0119] That is to say, the reflecting portion 21 has a portion away from the back panel main body 11 and a portion close to the back panel main body 11, wherein the portion of the reflecting portion 21 away from the back panel main body 11 can be formed with an anti-reflection structure 211. Compared with the prior art, the anti-reflection structure 211 can be used to weaken the intensity of light reflected from the reflecting portion 21 to the display panel 71, and the angle between the portion of the reflecting portion 21 close to the back panel main body 11 and the back panel main 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 from the reflecting portion 21 to the display panel 71 can also be weakened, thereby weakening the intensity of light reflected from the reflecting portion 21 as a whole to the display panel 71 compared with the prior art.

[0120] like Figure 4 As shown, optionally, 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 equal to 90°.

[0121] That is, the portion of the reflective portion 21 close to the back plate body 11 may 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] Such a design can reflect the light directed toward the inner surface of the bent portion 12 with the help of the reflective component 3 .

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

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

[0126] like Figure 1-Figure 4 As shown, optionally, the portion of the reflective component 3 that is attached to the inner surface of the back panel body 11 can extend to below 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 arranged on the inner side of the bending portion 12; the third part 33 is arranged on the inner side of the back panel body 11 close to the bending portion 12; the second part 32 is located between the first part 31 and the second part 32, and is connected to the two as a whole.

[0128] For example, the first portion 31 can be attached to the inner surface of the reflective portion 21 away from the bend portion 12, that is, the first portion 31 can be attached to the inner surface of the portion of the reflective portion 21 that is close to perpendicular to the back panel body 11 and is not formed with the anti-reflection structure 211, or the first portion 31 can be arranged between the reflective portion 21 and the bend portion 12, the third portion 33 can be attached to the inner surface of the substrate 62 or the inner surface of the back panel body 11, and the second portion 32 is located between the first portion 31 and the second portion 32, and is respectively connected to the first portion 31 and the second portion 32 as a whole. Such a design can further increase the area of ​​the reflective component 3, so that the reflective component 3 can further reflect the light directed to the inner surface of the bend portion 12 and the light directed to the inner surface of the back panel body 11 close to the bend portion 12.

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

[0130] Compared with the design in which the second part 32 is perpendicular to the first part 31 and the third part 33, on the one hand, this design can make the light reflected by the second part 32 be reflected obliquely toward the display panel 71, so that the light reflected from the second part 32 to the display panel 71 can reach the display panel 71 through a shorter path, and then the light reflected from the reflecting part 21 to the display panel 71 has a higher intensity, so that the image displayed on the display panel 71 can have sufficient brightness. On the other hand, it can reduce the material used in the second part 32, thereby reducing the material used in the reflective component 3, and thus reducing the material cost of the display device and the spliced ​​display equipment.

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

[0132] Such a design can prevent the light directed toward the inner surface of the bending portion 12 from being unable to be reflected by the reflecting component 3 or the reflecting portion 21 , thereby ensuring that all the light directed toward the inner surface of the bending portion 12 can be reflected by the reflecting component 3 or the reflecting portion 21 .

[0133] Optionally, the length of the overlapping part of the reflecting component 3 and the reflecting portion 21 in the first direction can be greater than or equal to 1 mm; the first direction is the extension direction of the reflecting portion 21 from one end of the reflecting portion 21 close to the back panel body 11 to the end of the reflecting portion 21 away from the back panel 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 portion 31, a second portion 32, and a third portion 33. Figure 9 and Figure 10 As shown, the first portion 31 can be attached to the inner surface of the portion of the reflective portion 21 close to the back panel body 11, the third portion 33 can be attached to the inner surface of the substrate 62, and the second portion 32 can be located between the first portion 31 and the second portion 32 and connected to the two as a whole. Or, as Figure 11 and Figure 12 As shown, the first portion 31 can be attached to the inner surface of the portion of the reflective portion 21 close to the back panel body 11, the third portion 33 can be attached to the inner surface of the back panel body 11, and the second portion 32 can be located between the first portion 31 and the second portion 32 and connected to the two as a whole. Or, as Figure 13 and Figure 14As shown, the first portion 31 can be disposed between the reflective portion 21 and the bent portion 12, the third portion 33 can be attached to the inner surface of the substrate 62, and the second portion 32 can be located between the first portion 31 and the second portion 32 and connected to the two as a whole. Alternatively, as Figure 15 and Figure 16 As shown, the first part 31 can be arranged between the reflecting part 21 and the bending 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 connected to the two as a whole.

[0136] In actual application, the first part 31 of the reflective film can be adhered to the inner surface of the part of the reflective part 21 close to the back panel body 11, and the third part 33 can be adhered to the inner surface of the substrate 62 or the inner surface of the back panel body 11. When the first part 31 of the reflective film is arranged between the reflective part 21 and the bending part 12, it is not necessary to adhere to the reflective part 21 and the bending part 12.

[0137] like Figure 1-Figure 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 material cost of the white oil coating is low and will not interfere with the reflective portion 21 .

[0139] like Figure 1-Figure 4 As shown, in actual application, the white oil coating can be applied to the inner surface of the bending portion 12, and extend along the inner surface of the bending portion 12 toward the back panel body 11, and bend and apply to the inner surface of the back panel body 11 at the connection between the bending portion 12 and the back panel body 11.

[0140] Optionally, the thickness of the white oil coating may 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 may 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 arranged on the outer side of the bending portion 12 away from the back panel body 11 and is connected to the end of the reflecting portion 21 away from the back panel body 11; the backlight module may further include an outer frame 4, which is arranged on the outer side of the middle frame body 22 away from the bending portion 12; a limiting structure may further be provided between the middle frame body 22 and the outer frame 4, for limiting the outer frame 4 from turning outward in a direction away from the middle frame body 22.

[0143] In actual application, 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, the display panel 71 can be provided on the optical film 72, and the outer frame 4 can be provided on the outside of the middle frame body 22 away from the bending portion 12, and can be against the top edge of the display panel 71, and can be connected to the bending portion 12, so that the display panel 71, the optical film 72 and the diffuser plate 73 can be fixed on the top of the backlight module with the help of the outer frame 4 and the middle frame body 22.

[0144] The backlight module provided by the embodiment of the present invention provides a limiting structure between the middle frame body 22 and the outer frame 4. With the help of the limiting structure, the outer frame 4 is restricted from turning outward in a direction away from the middle frame body 22. This can avoid the light emitted by the light source 61 from leaking out from 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 caused by the outer frame 4 turning outward in a direction away from the middle frame body 22. This can improve the edge light leakage of the display device and the spliced ​​display equipment, and can further improve the bright band situation at the edge of the display panel 71 to be reduced or even eliminated, thereby further improving the display effect of the display device and the spliced ​​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 may 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 die stamping.

[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 an embodiment of the present invention, the limiting structure may include a first limiting portion provided on the middle frame body 22 and a second limiting portion provided on the outer frame 4 , and the first limiting portion is engaged with the second limiting portion.

[0150] In actual application, when the middle frame 2 and the outer frame 4 are assembled, the first limiting portion of the middle frame body 22 can be engaged with the second limiting portion of the outer frame 4, so that the first limiting portion can limit the engagement of the second limiting portion with the aid of the first limiting portion, thereby limiting the outer frame 4 from turning outward in a direction away from the middle frame body 22.

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

[0152] In actual application, when the middle frame 2 and the outer frame 4 are assembled, the hook 221 provided on the outer surface of the middle frame body 22 away from the bent portion 12 is passed through the through hole 41 formed in the outer frame 4, so that 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 abutted and 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, so that the outer frame 4 can be clamped and limited by the hook 221, thereby limiting 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 221 body passing through the through hole 41 and a hook portion 2212 bent relative to the hook 221 body, the hook portion 2212 is 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 panel body 11.

[0154] That is, after the hook 221 passes through the through hole 41, the hook 221 body and the hook portion 2212 are both located outside the outer frame 4, wherein the hook portion 2212 abuts against the outer surface of the outer frame 4 to limit the outer frame 4. This design facilitates the hook 221 to pass through the through hole 41 formed in the outer frame 4.

[0155] However, the hook portion 2212 is not limited to being located on the side of the through hole 41 away from the back plate body 11. Figure 22 As shown, the hook portion 2212 may also be located on a side of the through hole 41 close to the back plate body 11 .

[0156] like Figure 1 and Figure 17 As shown, optionally, the outer frame 4 can have a first protrusion and a first recessed portion, the first recessed portion is in contact with the middle frame body 22, and a through hole 41 is formed therein, the first protrusion is away from the middle frame body 22 relative to the recessed portion, and the hook 221 can be close to the middle frame body 22 relative to the outer side surface of the first protrusion away from the middle frame body 22.

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

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

[0159] Optionally, the chamfer 2213 may be a straight chamfer 2213 .

[0160] Optionally, the length of the right-angle side of the straight chamfer 2213 may 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 portion 2212 and the outer surface of the first protrusion (eg Figure 17 The center spacing Pp) can be greater than or equal to 0.5mm.

[0162] Optionally, the distance between the outer surface of the first protruding portion and the inner surface of the first recessed portion (eg Figure 19 The center distance 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 (eg Figure 19 The middle diameter (shown as G) 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 (eg Figure 21 The length (shown as 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 middle frame body 22 away from the outer surface of the bent portion 12 (as shown by the 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, the bending portion 12 can be multiple, and include a first bending portion 12a and a second bending portion 12b arranged on different side edges of the back panel body 11; the middle frame body 22 can include a first sub-middle frame body 22a and a second sub-middle frame body 22b; the outer frame 4 can include a first outer frame 4a and a second outer frame 4b; wherein the first sub-middle frame body 22a is arranged on the outside of the first bending portion 12a away from the back panel body 11, and is connected to the first end of the reflecting portion 21 away from the back panel body 11, and the second end of the reflecting portion 21 is bent toward the inner side of the first bending portion 12a close to the back panel body 11, and extends in a direction close to the back panel body 11; the second sub-middle frame body 22a is arranged on the outside of the first bending portion 12a away from the back panel body 11, and is connected to the first end of the reflecting portion 21 away from the back panel body 11, and the second end of the reflecting portion 21 is bent toward the inner side of the first bending portion 12a close to the back panel body 11, and extends in a direction close to the back panel body 11; The middle frame body 22b is arranged on the side of the end of the second bending portion 12b away from the back panel body 11, and is connected to the first end of the other reflecting portion 21 away from the back panel body 11. The second end of the reflecting portion 21 is bent toward the inner side of the second bending portion 12b close to the back panel body 11, and extends in the direction close to the back panel body 11; the first outer frame 4a is arranged on the outer side of the first sub-middle frame body 22a away from the first bending portion 12a, and is fixedly connected to the first sub-middle frame body 22a; a limiting structure is provided between the first sub-middle frame body 22a and the first outer frame 4a; the second outer frame 4b is arranged on the outer side of the second bending portion 12b away from the back panel body 11, and is fixedly connected to the second bending portion 12b.

[0167] That is to say, in actual application, there can be multiple bending portions 12, and multiple bending portions 12 can be arranged on different side edges of the back panel main body 11. Each bending portion 12 can be correspondingly provided with a reflecting portion 21 and an outer frame 4. Each reflecting portion 21 can reflect the light emitted by the light source 61 to the corresponding bending portion 12. Each outer frame 4 can be respectively connected to the corresponding bending portion 12. Multiple outer frames 4 can commonly fix the display panel 71 and fix the display panel 71 to the backlight module.

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

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

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

[0171] This design is because a backlight driving module 74 needs to be set between the first bending portion 12a and the first outer frame 4a. Therefore, a larger space is required between the first bending portion 12a and the first outer frame 4a. By setting a reinforcement portion 23 between the first bending portion 12a and the first outer frame 4a, the structural strength of the side where the first bending portion 12a and the first outer frame 4a of the backlight module are located can be strengthened with the help of the reinforcement portion 23.

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

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

[0174] like Figure 2 As shown, optionally, the light-shielding structure 5 may include a black oil coating, which is coated on the outer surface of the second bent portion 12b.

[0175] On the one hand, such a design can make the color of the outer surface of the second bent portion 12b consistent with the color of the second outer frame 4b. On the other hand, the shading structure 5 does not need to be connected to the second bent portion 12b through connecting components. Compared with the existing technology, it can save the connecting components between the second outer frame 4b and the second bent portion 12b coated with black oil coating, thereby not only reducing the material cost of the display device and the spliced ​​display equipment, but also reducing the manual assembly cost of the display device and the spliced ​​display equipment.

[0176] like Figure 2 As shown, optionally, the second bending portion 12b may have a second concave portion and a second convex portion, the second outer frame 4b may have a third concave portion and a third convex portion, the third concave portion may be in contact with the outer surface of the second concave portion, the third convex portion may be in contact with the outer surface of the second sub-middle frame body 22b, and a shading structure 5 may be provided on the outer side of the second convex portion.

[0177] like Figure 1 and Figure 2 As shown, an embodiment of the present invention further provides a display device, including the backlight module provided by the embodiment of the present invention.

[0178] The display device provided by the embodiment of the present invention can improve the display effect of the display device and the spliced ​​display device with the help of the backlight module provided by the embodiment of the present invention, and can reduce the material cost of the display device and the spliced ​​display device.

[0179] Optionally, the display device may further include a display panel 71 . The display panel 71 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 may serve as a display device of a spliced ​​display device.

[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 a display device provided by an embodiment of the present invention. When the display device is actually displaying, when the relative brightness is greater than 1, the picture appears brighter visually. The relative brightness refers to the ratio of the display brightness value of a position on the display panel 71 to the average of the display brightness values ​​of multiple positions on the display panel 71. The average of the display brightness values ​​of multiple positions on the display panel 71 can represent the overall display brightness of the display panel 71. If the relative brightness of a position on the display panel 71 is greater than 1, it means that the position on the display panel 71 is brighter than the overall display panel 71. The greater the relative brightness of a position on the display panel 71 is greater than 1, the brighter the position on the display panel 71 is relative to the overall display panel 71. If the relative brightness of a position on the display panel 71 is less than 1, it means that the position on the display panel 71 is darker than the overall display panel 71. The less the relative brightness of a position on the display panel 71 is less than 1, the darker the position on the display panel 71 is relative to the overall display panel 71.

[0182] like Figure 23As shown, the relative brightness of the display device of the prior art in the area 10mm-45mm away from the edge of the display device is much greater than 1, and thus has a distinct bright band. However, the relative brightness of the display device provided by the embodiment of the present invention in the area 10mm-45mm away from the edge of the display device is lower than the relative brightness of the display device of the prior art in the area 10mm-45mm away from the edge of the display device. This indicates that the bright band at the edge of the display device provided by the embodiment of the present invention has been reduced or even eliminated, and the display effect of the display device has been significantly improved. In addition, the brightness uniformity of the display device provided by the embodiment of the present invention in the area 10mm-50mm away from the edge of the display device is significantly better than that of the display device of the prior art. In other words, the brightness and darkness of the display device provided by the embodiment of the present invention in the area 10mm-50mm away from the edge of the display device is more uniform than that of the prior art. From this aspect, it can also be seen that the display effect of the display device provided by the embodiment of the present invention has been significantly improved.

[0183] The present invention also provides a spliced ​​display device, comprising a plurality of backlight modules as provided in the present invention. The plurality of backlight modules are arranged in a direction parallel to the outer surface of the back panel body 11 away from the bending portion 12 .

[0184] The spliced ​​display device provided by the embodiment of the present invention can improve the display effect of the display device and the spliced ​​display device with the help of the backlight module provided by the embodiment of the present invention, and can reduce the material cost of the display device and the spliced ​​display device.

[0185] In actual applications, the direction parallel to the outer surface of the back panel body 11 away from the bending portion 12 includes the relative direction of the first outer frame 4a and the second outer frame 4b, and the direction perpendicular to the relative direction of the first outer frame 4a and the second outer frame 4b (i.e., the second direction). Multiple backlight modules can be closely arranged 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 pasted or connected. For example, in the relative direction of the first outer frame 4a and the second outer frame 4b, the two sides of a backlight module can be closely adjacent to the other two backlight modules in a one-to-one correspondence, 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 an adjacent backlight module and part of the outer surface of the bending portion 12, and 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 another adjacent backlight module.

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

[0187] In practical applications, a plurality of backlight modules can be connected to the splicing frame through respective connection structures, and two adjacent backlight modules can be closely attached to each other, thereby forming a splicing display device.

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

[0189] In summary, the backlight module, display device and spliced ​​display apparatus provided by the embodiments of the present invention can improve the display effects of the display device and the spliced ​​display apparatus and can reduce the material costs of the display device and the spliced ​​display apparatus.

[0190] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present invention, and such 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: A backboard, comprising a backboard body and a bent portion arranged at an edge of the backboard body; The middle frame includes a reflective portion, the reflective portion is arranged on the inner side of the bent portion close to the back plate body, and an anti-reflection structure is formed on a portion of the reflective portion away from the back plate body; The reflective component is at least arranged on the inner side of the bent portion close to the back plate body, and the reflective component and the reflective portion jointly cover the inner side surface of the bent portion close to the back plate body.

2. The backlight module according to claim 1, wherein: The anti-reflection structure includes a plurality of convex portions and a plurality of concave portions, and the plurality of convex portions and the plurality of concave portions are alternately distributed on the inner side surface of the reflective portion away from the bending portion.

3. The backlight module according to claim 2, wherein: The plurality of convex portions and the plurality of concave portions are divided into a plurality of concave-convex groups, the plurality of concave-convex groups are spaced apart along the first direction, and each of the concave-convex groups includes a plurality of convex portions and a plurality of concave portions alternately distributed along the second direction; The first direction is an extending direction from an end of the reflecting portion close to the back plate body to an end of the reflecting portion away from the back plate body, and the second direction is an extending direction of the reflecting portion perpendicular to the first direction.

4. The backlight module according to claim 2 or 3, wherein: The protrusion has a protruding length relative to the inner surface of the reflective portion of greater than or equal to 0.5 mm and less than or equal to 1 mm; and / or the protrusion has a length in the second direction of greater than or equal to 0.5 mm and less than or equal to 1 mm; and / or the angles between the two side surfaces of the protrusion in the first direction and the inner surface of the reflective portion are both greater than or equal to 30° and less than or equal to 60°. The first direction is an extension direction of the reflective portion from an end of the reflective portion close to the back plate body to an end of the reflective portion away from the back plate body, and the second direction is an extension direction of the reflective portion perpendicular to the first direction.

5. The backlight module according to claim 1, wherein: 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 close to the bending portion, and the plurality of light-transmitting holes are distributed at intervals.

6. The backlight module according to claim 5, wherein: The plurality of light-transmitting holes are divided into a plurality of light-transmitting hole groups, the plurality of light-transmitting hole groups are spaced apart along the first direction, each light-transmitting hole group includes a plurality of light-transmitting holes spaced apart along the second direction, and the light-transmitting holes of two adjacent light-transmitting hole groups are staggered in the second direction; The first direction is an extending direction from an end of the reflecting portion close to the back plate body to an end of the reflecting portion away from the back plate body, and the second direction is an extending direction of the reflecting portion perpendicular to the first direction.

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

8. The backlight module according to any one of claims 5 to 7, wherein: 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 center lines of radial cross-sections 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 an extension direction of the reflective portion from an end of the reflective portion close to the back plate body to an end of the reflective portion away from the back plate body, and the second direction is an extension direction of the reflective portion perpendicular to the first direction.

9. The backlight module according to claim 1, wherein: The anti-reflection structure is formed between the first end of the reflective portion away from the back plate body and a position where the reflective portion is greater than or equal to 2 mm and less than or equal to 10 mm away from the first end.

10. The backlight module according to claim 1, wherein: An included angle between a portion of the reflective portion close to the back panel body and the back panel body is greater than or equal to 85° and less than or equal to 90°.

11. The backlight module according to claim 1, wherein: The reflective component is attached to the inner surface of the bent portion; or A portion of the reflective component is attached to the inner surface of the bent portion, and another portion is attached to the inner surface of the back plate body close to the bent portion; or, The reflective component includes a first part, a second part and a third part, wherein the first part is arranged on the inner side of the bending portion; the third part is arranged on the inner side of the back panel body close to the bending portion; the second part is located between the first part and the second part, and is connected to the two as a whole.

12. The backlight module according to claim 1 or 11, wherein: The reflective component and the orthographic projection of the reflective portion on the inner surface of the bent portion at least partially overlap.

13. The backlight module according to claim 12, wherein: The length of the overlapping portion of the reflective component and the reflective portion in the first direction is greater than or equal to 1 mm; the first direction is the extending direction of the reflective portion from one end of the reflective portion close to the back panel body to the end of the reflective portion away from the back panel body.

14. The backlight module according to claim 1, wherein: The reflective component includes a white oil coating or a reflective film.

15. The backlight module according to claim 14, wherein: 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, wherein: The middle frame further includes a middle frame body, which is arranged 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 arranged on the outer side of the middle frame body away from the bent portion; A limiting structure is further provided between the middle frame body and the outer frame, for limiting the outer frame from turning outward in a direction away from the middle frame body.

17. The backlight module according to claim 16, wherein: The limiting structure includes a first limiting portion provided on the middle frame body and a second limiting portion provided on the outer frame, and the first limiting portion is engaged with the second limiting portion.

18. The backlight module according to claim 17, wherein: The second limiting portion is a through hole formed in the outer frame; The first limiting portion is a hook provided on the outer surface of the middle frame body away from the bending portion. The hook passes through the through hole and is clamped on the outer surface of the outer frame away from the middle frame body.

19. The backlight module according to claim 18, wherein: 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 a side of the through hole away from the back plate body.

20. The backlight module according to claim 16, wherein: There are multiple bending parts, including a first bending part and a second bending part provided on different side edges of the back plate 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-middle frame body is disposed on an outer side of the first bending portion away from the back panel body and is connected to a first end of the reflecting portion away from the back panel body. The second end of the reflecting portion is bent toward an inner side of the first bending portion close to the back panel body and extends in a direction close to the back panel body. The second sub-middle frame body is arranged on a side of the end of the second bent portion away from the back panel body, and is connected to the first end of the other reflecting portion away from the back panel body. The second end of the reflecting portion is bent toward the inner side of the second bent portion close to the back panel body and extends in a direction close to the back panel body. The first outer frame is arranged on the outer side of the first sub-middle frame body away from the first bending portion and is fixedly connected to the first sub-middle frame body; the limiting structure is provided between the first sub-middle frame body and the first outer frame; The second outer frame is arranged on the outer side of the second bending portion away from the back plate body and is fixedly connected to the second bending portion.

21. The backlight module according to claim 20, wherein: The backlight module further includes a shading structure, which is arranged on the outer side of the second bending portion away from the back panel body, and the shading structure and the second outer frame jointly cover the outer surface of the second bending portion away from the back panel body.

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

23. A splicing display device, characterized in that: It comprises a plurality of backlight modules according to any one of claims 1 to 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 spliced ​​display device according to claim 23, wherein: The splicing display device further includes a splicing frame. A connecting structure is provided on the outer side of the back panel body of the backlight module away from the bent portion. The backlight module is connected to the splicing frame via the connecting structure.

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