Display device and preparation method for back panel

Abstract

Disclosed are a display device and a preparation method for a back panel (1). The device comprises a display panel (2) and a back panel (1), the back panel (1) comprising: a back panel body (10) arranged behind the display panel (2) and at a distance from the display panel (2); a side panel (11) formed by protruding forward from an edge of the back panel body (10); and a support panel (13) arranged opposite the back panel body (10), wherein a first end (13a) of the support panel (13) is connected to an inner wall of the side panel (11), the side of the support panel (13) facing away from the back panel body (10) is provided with an adhesive tape (3) for fixing the display panel (2), a second end (13b) of the support panel (13) is arranged opposite the first end (13a), the support panel (13) is bent forwards or backwards at least once between the first end (13a) and the second end (13b) to form a first support portion (131) and at least one second support portion (132) stacked on the first support portion (131), and the projection of the adhesive tape (3) on the back panel body (10) at least partially overlaps with the projection of the second support portion (132) on the back panel body (10). The strength of a stressed surface of the back panel is improved, the problem of partial depression under the action of an external force is avoided, and the problems of cracking of the adhesive tape and leakage of panel light are solved.

Description

Display device and backplane manufacturing method

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese applications filed on December 29, 2023, with application numbers 202311852393.4; filed on December 29, 2023, with application numbers 202311847449.7; filed on December 29, 2023, with application numbers 202311852357.8; and filed on April 1, 2024, with application numbers 202410389313.4, the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the field of display technology, and in particular to a display device and a method for manufacturing a backplane. Background Art

[0004] Competition in display products is becoming increasingly fierce. The industry generally adopts F-shaped bent backplane structure to achieve ultra-narrow appearance and low-cost advantages.

[0005] In the F-shaped bent backplane structure, the panel is attached to the backplane's load-bearing surface with panel tape. During assembly, rotation, and use, the TV is subjected to external forces perpendicular to the panel, supported by the backplane's load-bearing surface to ensure overall structural stability and reliability. In the industry, backplanes are typically formed using cold stamping, with a load-bearing surface width of less than 8mm. This bending process can easily lead to insufficient strength, a key factor affecting overall structural reliability. When the load-bearing surface is insufficiently strong, it can sag or sag locally under external forces, leading to issues such as tape cracking or panel light leakage.

[0006] Summary of the Invention

[0007] In a first aspect, an embodiment of the present disclosure provides a display device, which may include: a display panel, which can be used to display image information; a back panel, which may include: a back panel body, which is arranged at a distance from the display panel on the rear side of the display panel; a side panel, which may be formed by the edge of the back panel body protruding forward; a support plate, which may be arranged opposite to the back panel body, and the first end of the support plate is connected to the inner wall of the side panel, and the side of the support plate facing away from the back panel body may be provided with a tape for fixing the display panel; wherein, the second end of the support plate is arranged opposite to the first end, and the support plate is bent forward or backward at least once between the first end and the second end to form a layer of first supporting portion and at least one layer of second supporting portion stacked with the first supporting portion; the projection of the tape on the back panel body at least partially overlaps with the projection of the second supporting portion on the back panel body.

[0008] In a second aspect, an embodiment of the present disclosure provides a method for preparing a backboard, which may include: providing a stamping raw material, wherein the stamping raw material includes a main body, a first part, a second part, a third part and a fourth part connected in sequence; a first axis is set between the main body and the first part, a second axis is set between the first part and the second part, a third axis is set between the second part and the third part, and a fourth axis is set between the third part and the fourth part; with the fourth axis as the bending axis, the fourth part is bent toward the first surface of the main body, and the bending angle of the fourth part is greater than 90 degrees; with the second axis as the bending axis, the second part is bent toward the first surface of the main body. The bending angle of the second part is less than 90 degrees; with the fourth axis as the bending axis, the fourth part is bent toward the third part, and the fourth part is fitted with the third part; with the first axis as the bending axis, the first part is bent toward the second surface of the main body, and the bending angle of the first part is less than 90 degrees; with the second axis as the bending axis, the second part is bent toward the first part, and the second part is fitted with the first part; with the third axis as the bending axis, the third part is bent toward the second part; with the first axis as the bending axis, the first part is bent toward the first surface of the main body, and the bending angle of the first part is greater than 90 degrees, so as to form the back panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG1 is a schematic structural diagram of a display device according to some embodiments;

[0010] FIG2 is a schematic diagram of a structure in which a back plate is bent backward twice according to some embodiments;

[0011] FIG3 is a schematic diagram of a structure in which a back plate is bent backward once according to some embodiments;

[0012] FIG4 is a schematic diagram of a structure in which a back plate is bent forward twice according to some embodiments;

[0013] FIG5 is a diagram illustrating the dimensions of a backplane according to some embodiments;

[0014] FIG6 is a schematic diagram of a structure in which a back panel is bent backward twice and abutted and fixed against side panels according to some embodiments;

[0015] FIG7 is a schematic diagram of a structure in which a back panel is bent backward once and abutted and fixed against a side panel according to some embodiments;

[0016] FIG8 is a schematic structural diagram of a back panel that is bent forward twice and abuts against and fixed to the side panels according to some embodiments;

[0017] FIG9 is a schematic diagram of a structure in which a first supporting portion and a second supporting portion are arranged at an angle according to some embodiments;

[0018] FIG10 is a schematic diagram of a structure in which a back plate is bent backward once and arranged at an angle according to some embodiments;

[0019] FIG11 is a schematic structural diagram of a reinforcement plate provided on a support plate according to some embodiments;

[0020] FIG12 is a schematic diagram of the projection relationship between the adhesive tape and the reinforcing plate on the back plate body according to some embodiments;

[0021] FIG13 is another schematic diagram of the projection relationship between the adhesive tape and the reinforcing plate on the back plate body according to some embodiments;

[0022] FIG14 is another schematic diagram of the projection relationship between the adhesive tape and the reinforcing plate on the back plate body according to some embodiments;

[0023] FIG15 is another schematic diagram of the projection relationship between the adhesive tape and the reinforcing plate on the back plate body according to some embodiments;

[0024] FIG16 is another schematic diagram illustrating the projection relationship between the adhesive tape and the reinforcing plate on the back plate body according to some embodiments;

[0025] FIG17 is a schematic diagram of a structure in which a reinforcing plate and a side plate are abutted and fixed according to some embodiments;

[0026] FIG18 is a flow chart of a method for preparing a backplane according to some embodiments;

[0027] FIG19 is a schematic diagram of the structure of a stamped raw material according to some embodiments;

[0028] FIG20 is a schematic structural diagram of a backplane according to some embodiments;

[0029] FIG21 is a schematic diagram of bending the fourth portion toward the first surface of the main body according to some embodiments;

[0030] FIG22 is a schematic structural diagram of a first bending assembly according to some embodiments;

[0031] FIG23 is a schematic diagram of bending the fourth portion using the first fixing member and the first upper die punch according to some embodiments;

[0032] FIG24 is a schematic diagram of bending the fourth portion using the first fixing member and the first lower die punch according to some embodiments;

[0033] FIG25 is another schematic diagram of bending the fourth portion using the first fixing member and the first lower die punch according to some embodiments;

[0034] FIG26 is a schematic diagram of bending the second portion and the fourth portion according to some embodiments;

[0035] FIG27 is a schematic structural diagram of a second bending assembly according to some embodiments;

[0036] FIG28 is a schematic diagram illustrating bending the second portion using a second fixing member and a second upper die punch according to some embodiments;

[0037] FIG29 is a schematic diagram illustrating bending the fourth portion using a second upper punch and a second lower punch according to some embodiments;

[0038] FIG30 is a schematic diagram of bending a first portion, a second portion, and a third portion according to some embodiments;

[0039] FIG31 is a schematic structural diagram of a third bending assembly according to some embodiments;

[0040] FIG32 is a schematic diagram of bending the first portion using a third fixing member and a third upper die punch according to some embodiments;

[0041] 33 is a schematic diagram of bending the second portion and the third portion using a third fixing member, a third upper die punch, and a third lower die punch according to some embodiments;

[0042] FIG34 is a schematic diagram of bending the first portion according to some embodiments;

[0043] FIG35 is a schematic structural diagram of a fourth bending assembly according to some embodiments;

[0044] FIG36 is a schematic diagram of bending the first portion using a fourth fixing member and a fourth upper die punch according to some embodiments;

[0045] Description of reference numerals:

[0046] 1. Back panel; 10. Back panel body; 11. Side panel; 12. Connecting plate; 13. Support plate; 13a. First end; 13b. Second end; 131. First supporting portion; 132. Second supporting portion; 14. Reinforcing plate; 14a. Third end; 14b. Fourth end; 141. Third side; 142. Fourth side; 2. Display panel; 3. Adhesive tape; 301. First side; 301. Second side; 4. Optical assembly; 5. Rear shell; 6. Front shell assembly; 7. Middle frame.

[0047] A11, bottom surface; A12, outer surface; A13, side surface; A14, front surface; A15, back surface;

[0048] A100, stamping material; A110, main body; A111, first axis; A120, first part; A121, second axis; A130, second part; A131, third axis; A140, third part; A141, fourth axis; A150, fourth part;

[0049] A200, first bending assembly; A210, first fixing member; A211, first base; A212, first stripper plate; A213, first bonding surface; A220, first upper die punch; A230, first lower die punch; A231, second bonding surface;

[0050] A300, second bending assembly; A310, second fixing member; A311, second base; A312, second stripper plate; A320, second upper die punch; A321, third bonding surface; A330, second lower die punch; A331, fourth bonding surface;

[0051] A400, third bending component; A410, third fixing member; A411, fifth bonding surface; A412, sixth bonding surface; A420, third upper die punch; A421, seventh bonding surface; A430, third lower die punch; A431, eighth bonding surface; A432, ninth bonding surface;

[0052] A500, fourth bending assembly; A510, fourth fixing piece; A511, fourth base; A512, fourth stripping plate; A520, fourth upper die punch. DETAILED DESCRIPTION

[0053] FIG1 is a schematic structural diagram of a display device according to some embodiments. As shown in FIG1 , the display device may include:

[0054] Display panel 2 is used to display image information. Display panel 2 itself does not generate light, but instead receives light from the backlight module to form images. When external image information is input to the main control board, the main control board controls display panel 2. After receiving the electrical signal, the main control board controls the liquid crystal inside display panel 2 to deflect, allowing the backlight to pass through or blocking it. The liquid crystal layer then converts the backlight into tiny pixels, generating point, line, and surface images.

[0055] A back panel 1 is provided on the rear side of the display panel 2 and is used to support the display panel 22;

[0056] a rear shell 5, provided on the rear side of the back side;

[0057] Middle frame 7;

[0058] A front housing assembly 6 is provided on the front side of the display panel 2 , and an edge of the front housing assembly 6 is fixedly connected to an edge of the rear housing 5 ;

[0059] The backlight module, located between the display panel 2 and the backplane 1, ensures more uniform brightness, lowers power consumption, and reduces weight. The backlight module comprises a light bar that emits light and an optical assembly 4, which includes a reflector, a diffuser, and a membrane. The light bar is located in front of the backplane 1, and the diffuser is located in front of the light bar. When the light bar is powered on and emits light, the light enters the diffuser, which randomly refracts the light in various directions, ensuring that the light from the light-emitting surface of the backlight module is as uniform as possible, thus resolving the problem of uneven light from the light source in the light bar.

[0060] In the display device structure, in order to achieve an ultra-narrow appearance and low cost, the back panel 1 is generally thinned. However, since the back panel 1 also plays the role of supporting the display panel 2, the minimum thickness of the back panel 1 of a traditional display device is currently 8 mm. When subjected to an external force perpendicular to the direction of the display panel 2, the strength of the force-bearing surface of the back panel 1 is insufficient, and local depression or sagging is prone to occur, resulting in abnormal problems such as cracking of the tape 3 or light leakage from the display panel 2.

[0061] In order to solve the problem of insufficient strength of the force-bearing surface of the back plate 1 and the occurrence of local depression, an embodiment of the present disclosure provides a display device, which mainly improves the structure of the back plate 1 mentioned above. As shown in Figures 2 to 5, the back panel 1 may include: a back panel body 10, which is a flat plate-like structure and is located on the rear side of the display panel 2 and spaced apart from the display panel 2 when installed; a side panel 11, which is arranged on the front side of the back panel body 10 and is formed by the edge of the back panel body 10 protruding forward, and the side panel 11 is formed on the top, left and right sides of the back panel body 10; a support plate 13, which is arranged opposite to the back panel 1, and the support plate 13 has a first end 13a and a second end 13b that are arranged opposite to each other, and the first end 13a of the support plate 13 is connected to the inner wall of the side panel 11, and the second end 13b of the support plate 13 is a free end. A side of the support plate 13 facing away from the back panel body 10 is provided with a tape 3 for fixing the display panel 2, and the top, left and right sides of the display panel 2 are fixedly connected to the support plate 13 on the top, left and right sides of the back panel 1 by the tape 3 respectively, and the support plate 13 supports the display panel 2.

[0062] On the left side of the display device, the first end 13a of the support plate 13 is located to the left of the second end 13b; the support plate 13 is bent forward or backward at least once between the first end 13a and the second end 13b to form a first support portion 131 and at least one second support portion 132 stacked with the first support portion 131.

[0063] In some embodiments, as shown in Figures 3 and 4, when the support plate 13 is bent once, a layer of first support portion 131 and a layer of second support portion 132 are formed; when the support plate 13 is bent twice, a layer of first support portion 131 and two layers of second support portions 132 are formed; and as shown in Figure 2, when the support plate 13 is bent n times, a layer of first support portion 131 and n layers of second support portions 132 are formed, where n is a positive number greater than 0.

[0064] The bending direction of the support plate 13 can be forward bending or backward bending. When the support plate 13 bends backward, the second support portion 132 is formed on the rear side of the first support portion 131, and the tape 3 is arranged on the front side of the first support portion 131; when the support plate 13 bends forward, the second support portion 132 is formed on the front side of the first support portion 131, and the tape 3 is arranged on the front side of the second support portion 132 at the frontmost side.

[0065] In some embodiments, as shown in Figure 3, the bending direction of the support plate 13 is backward, and the second support portion 132 is formed on the rear side of the first support portion 131; as shown in Figure 4, the bending direction of the support plate 13 is forward, and the second support portion 132 is formed on the front side of the first support portion 131.

[0066] It should be noted that the first support portion 131 is formed between the first end 13a of the support plate 13 and the first bending point from the first end 13a to the second end 13b, and the second support portion 132 is formed between the first bending point from the first end 13a to the second end 13b and the second end 13b, that is, between any two bending points between the first bending point and the second end 13b, and between the last bending point and the second end 13b.

[0067] In order to ensure that when subjected to external forces, the back panel 1 does not sag, causing the adhesive tape 3 to crack and fail, thereby preventing light leakage, in some embodiments of the present disclosure, the width of the second support portion 132 needs to be set according to the position of the adhesive tape 3 and the width of the adhesive tape 3. For example, the projection of the adhesive tape 3 on the back panel body 10 at least partially overlaps with the projection of the second support portion 132 on the back panel body 10, so as to enhance the strength of the support plate 13 corresponding to the adhesive tape 3 and prevent the adhesive tape 3 from cracking and completely failing due to the sag of the support plate 13. In other words, at least a portion of the support plate 13 is thickened at a position relatively above the adhesive tape 3, so that this portion of the support plate 13 is less likely to sag under the action of external forces. Even if other positions sag or sag, it will not affect the overall sealing effect of the adhesive tape 3.

[0068] In order to further improve the strength of the support plate 13, the bending angles of all the bending points formed between the first end 13a and the second end 13b of the support plate 13 are all 180°, so that the second support portion 132 is arranged in contact with the first support portion 131, thereby forming a support plate 13 with double thickness, achieving the effect of enhancing the strength of the support plate 13.

[0069] In some embodiments, as shown in FIG. 5, the width of the second support portion 132 is A1, and the width of the tape 3 is C. To meet the strength requirements of the support plate 13, the value of A1 should be at least not less than C / 3, so as to truly strengthen the strength of the support plate 13.

[0070] In some embodiments, taking the left side of the display device as an example, when the value of A1 is too small, the overlapping surface of the second support portion 132 and the first support portion 131 is small and concentrated at the free end of the support plate 13. In this way, only the strength of the free end of the support plate 13 can be strengthened. When an external force acts on the display panel 2, the thickness of the support plate 13 on the left side of the second support portion 132 does not increase, and the support strength is still insufficient, which is likely to cause local depressions, and further lead to phenomena such as cracking and light leakage of the tape 3.

[0071] In some embodiments, the projection of the tape 3 on the backplane body 10 is located within the projection of the second support portion 132 on the backplane body 10. That is to say, at the position corresponding to the tape 3, the second support portion 132 is provided, so as to thicken the support plate 13 at the position corresponding to the tape 3, thereby improving the strength of the support plate 13 at the position corresponding to the tape 3, and avoiding the depression of the support plate 13 at the position corresponding to the tape 3 when subjected to an external force, which affects the sealing effect of the tape 3.

[0072] In some embodiments, in order to improve the strength of the support plate 13 at various places, the width of the second support portion 132 needs to be as large as possible, but the width of the second support portion 132 needs to be smaller than the width of the first support portion 131. In the most preferred embodiment, the width of the second support portion 132 is infinitely close to the width of the first support portion 131, but the second support portion 132 and the side plate 11 can be in contact without requiring fixation.

[0073] In some embodiments, the minimum distance between the second support portion 132 and the side plate 11 is x, and 0 < x < C / 3. When x > C / 3, the overall width of the second support portion 132 is small, which will affect the strength of the support plate 13.

[0074] In some embodiments, since the support plate 13 is bent to form a first support portion 131 and at least one second support portion 132, which is equivalent to doubling the thickness of the support plate 13, the overall thickness of the back plate 1 can be thinned. In some embodiments of the present disclosure, the material of the back plate 1 is galvanized steel plate, and the thickness of the back plate 1 is less than or equal to 0.6 mm. Even if the thickness of the back plate 1 is thinned, since the thickness of the support plate 13 is doubled, it can still enhance the support strength and avoid layout depression.

[0075] In some embodiments, the support plate 13 is bent backward between the first end 13a and the second end 13b to form a first support portion 131 and a second support portion 132 located between the first support portion 131 and the back panel body 10, and there is a gap between the second support portion 132 away from the first support portion 131 and the back panel body 10, that is, there is a gap between the second support portion 132 on the rearmost side and the back panel body 10, which does not affect the fixed installation of the backlight assembly.

[0076] Taking into account the installation of the backlight assembly and the overall thickness of the display device, in some embodiments of the present disclosure, it is only necessary to bend the support plate 13 backward once to form a first support portion 131 and a second support portion 132. The bending angle of the support plate 13 bent backward is 180°, so that the second support portion 132 is arranged to fit the rear side surface of the first support portion 131, thereby effectively improving the strength.

[0077] The support plate 13 can be separately provided from the back panel body 10 and the side panel 11 and fixed together by welding or other fixing methods, or it can also be formed by bending the back panel body 10 using a stamping process. The back panel 1 formed by bending the back panel body 10 is an F-shaped back panel.

[0078] In some embodiments of the present disclosure, the side panel 11 is formed by bending the top, left and right sides of the back panel body 10 forward, and the side panel 11 is bent inward 180 degrees to form a connecting plate 12, and the connecting plate 12 is fitted with the inner wall of the side panel 11, and the connecting plate 12 is bent 90° to form a support plate 13. The support plate 13 is formed at one end of the connecting plate 12 close to the back panel body 10, and there is a certain distance between the support plate 13 and the front end of the side panel 11 to form a mounting groove on the front side of the back panel 1 for placing the display panel 2.

[0079] In some embodiments, after the support plate 13 is bent to form the first support portion 131 and the second support portion 132, the second support portion 132 needs to be flattened so that the first support portion 131 and the second support portion can fit together. In addition, in order to solve the problem of local depression of the support plate 13 after being subjected to force, it can also be achieved without the above-mentioned bending method. For example, as shown in Figure 11, in order to strengthen the structural strength of the support plate 13, a reinforcing plate 14 is provided on the side of the support plate 13 facing the back plate 1, that is, a reinforcing plate 14 is provided on the rear side of the support plate 13, and the reinforcing plate 14 is fixed to the rear side of the support plate 13.

[0080] The projection of the adhesive tape 3 on the back plate body 10 at least partially overlaps with the projection of the reinforcing plate 14 on the back plate body 10 .

[0081] In some embodiments, the projection of the tape 3 on the back panel body 10 includes a first side edge 301 and a second side edge 301 that are relatively arranged, and the first side edge 301 and the second side edge 301 are both parallel to the side panel 11. The projection of the reinforcing plate 14 on the back panel body 10 includes a third side edge 141 and a fourth side edge 142, and the third side edge 141 and the fourth side edge 142 are parallel to the side panel 11.

[0082] As shown in FIG12 , the first side 301 overlaps with the third side 141 , and the second side 301 overlaps with the fourth side 142 . At this time, the projection of the adhesive tape 3 on the back plate body 10 completely overlaps with the projection of the reinforcing plate 14 on the back plate body 10 .

[0083] Alternatively, one of the first side 301 and the second side 301 is located between the third side 141 and the fourth side 142, and the other overlaps with the third side 141 or the fourth side 142. In this case, one side of the projection of the adhesive tape 3 on the back panel body 10 overlaps with the projection of the reinforcing plate 14 on the back panel body 10, and the other side falls within the projection of the reinforcing plate 14 on the back panel body 10.

[0084] Alternatively, as shown in FIG14 and FIG15 , one of the first side 301 and the second side 301 is located between the third side 141 and the fourth side 142, and the other is located outside the third side 141 or the fourth side 142. That is, one side of the projection of the adhesive tape 3 on the back plate body 10 is located within the projection of the reinforcing plate 14 on the back plate body 10, and the other side is located outside the projection of the reinforcing plate 14 on the back plate body 10.

[0085] Alternatively, as shown in FIG13 , the first side 301 and the second side 301 are both located between the third side 141 and the fourth side 142. In other words, the projection of the tape 3 on the back plate body 10 completely falls within the projection of the reinforcing plate 14 on the back plate body 10.

[0086] In addition, as shown in FIG. 16 , the third side 141 and the fourth side 142 are both located between the first side 301 and the second side 301 .

[0087] In the aforementioned possible embodiments, the adhesive tape 3 and the reinforcing plate 14 are partially or completely overlapped. Where the reinforcing plate 14 is provided, the back plate 1's support strength for the display panel 2 is increased. Because the reinforcing plate 14 and the adhesive tape 3 partially overlap, the support plate 13 is less likely to sag at the overlapped portion, and the adhesive tape 3 is less likely to crack at the overlapped portion. This prevents complete failure of the adhesive tape 3 and eliminates light leakage from the display device due to cracking of the adhesive tape 3.

[0088] In some embodiments, the width of the reinforcing plate 14 is less than or equal to the width of the supporting plate 13 .

[0089] In some embodiments, the side of the reinforcing plate 14 away from the side plate 11 does not protrude beyond the side of the supporting plate 13 away from the side plate 11. This prevents the reinforcing plate 14 from blocking the backlight assembly in the display device and affecting the performance of the backlight assembly.

[0090] In some embodiments, the distance between the side surface of the reinforcing plate 14 facing the side panel 11 and the inner wall of the side panel 11 is y, where y ≥ 0. In other words, the side surface of the reinforcing plate 14 facing the side panel 11 may abut against the inner wall of the side panel 11, or may form a gap between the side surface and the inner wall of the side panel 11. Whether the reinforcing plate 14 abuts against the inner wall of the side panel 11 or not does not affect the function of the reinforcing plate 14.

[0091] The material of the back panel 1 is also galvanized steel plate, and the thickness of the back panel 1 is less than or equal to 0.6 mm. Even if the thickness of the back panel 1 is thinned, the reinforcing plate 14 is provided at the support plate 13, which can still enhance the supporting strength and avoid local depression.

[0092] In the above embodiment, two solutions are provided to improve the local depression of the support plate 13. Whether bending the support plate 13 or setting a reinforcing plate 14 on the support plate 13, both are to thicken the support plate 13. By thickening the support plate 13, the strength of the support plate 13 is improved, thereby avoiding the occurrence of local depression when subjected to external force, and thus avoiding the problem of light leakage caused by cracking of the tape 3.

[0093] In addition, in order to solve the problem of insufficient strength of the force-bearing surface of the back plate 1 and the occurrence of tilting and collapsing, the embodiment of the present disclosure also provides a display device.

[0094] The structure of this display device is similar to that of the display device in the above embodiment, and the similarities are not repeated here. The difference lies in the support plate 13 .

[0095] In some embodiments, in combination with Figures 6 to 10, the second end 13b of the support plate 13 is arranged opposite to the first end 13a, and the support plate 13 is bent at least once between the first end 13a and the second end 13b to form a layer of first support portion 131 and at least one layer of second support portion 132, and the second support portion 132 abuts against the inner wall of the side panel 11 and is fixedly connected to the side panel 11.

[0096] In this way, the structure of the support plate 13 is strengthened at the first end 13a of the support plate 13 (that is, the root of the support plate 13), thereby improving the strength of the connection between the support plate 13 and the side plate 11, thereby avoiding the problem of the support plate 13 tilting and collapsing due to the weak connection strength between the support plate 13 and the side plate 11 under the action of external force.

[0097] In some embodiments, the second support portion 132 and the first support portion 131 may be arranged in close contact or at an angle.

[0098] In some embodiments, as shown in Figures 6 to 8 , the bending angles of all bends formed between the first end 13a and the second end 13b of the support plate 13 are 180°. In other words, the second support portions 132 are stacked on top of the first support portions 131, and each layer of second support portions 132 is fixedly connected to the side panel 11. The support plate 13 in Figure 6 bends backward twice, the support plate 13 in Figure 7 bends backward once, and the support plate 13 in Figure 8 bends forward once. The angles of the bends in Figures 6 and 7 are all 180°.

[0099] In some embodiments, the support plate 13 is bent backward between the first end 13a and the second end 13b to form a first support portion 131 and a second support portion 132 located between the first support portion 131 and the back panel body 10. The second support portion 132 is formed on the rear side surface of the first support portion 131. The first support portion 131 is parallel to the back panel body 10. The second support portion 132 can be parallel to the first support portion 131 or be set at an angle to the first support portion 131.

[0100] In some embodiments, as shown in Figures 9 and 10 , the angle α between the first support portion 131 and the second support portion 132 adjacent to the first support portion 131 is 0°≤α≤45°. The support plate 13 in Figure 9 is bent backward multiple times, while the support plate 13 in Figure 10 is bent backward once. As α increases, the strength of the support plate 13 increases. However, due to the assembly relationship and production process requirements of the display device, comprehensive mechanical calculations and verification have determined that α is required to be no greater than 15°. When α is no greater than 15°, optimal support strength and thickness of the display panel 2 can be achieved.

[0101] In some embodiments, two adjacent layers of second support portions 132 form an angle β with α≤β≤2α. When β=α, the second support portions 132 of the odd-numbered layers formed from the first end 13a to the second end 13b of the support plate 13 are tilted relative to the first support portion 131, while the second support portions 132 of the even-numbered layers are parallel to the first support portion 131. When β=2α, all second support portions 132 have the same angle with the first support portion 131.

[0102] In some embodiments, as shown in Figures 7 and 10, the support plate 13 is bent backward once between the first end 13a and the second end 13b to form a first support portion 131 and a second support portion 132. The second end 13b of the support plate 13 is abutted and fixed against the inner wall of the side panel 11. As shown in Figures 6 to 8, the first support portion 131 can be arranged parallel to the second support portion 132. Alternatively, as shown in Figures 9 and 10, the second support portion 132 can be arranged at an angle α to the first support portion 131. The second end 13b of the support plate 13 is abutted and fixed against the inner wall of the side panel 11, thereby improving the connection strength of the support plate 13 at the base and preventing the support plate 13 from tilting and collapsing.

[0103] The back plate 1 is also an F-shaped back plate 1 formed by a stamping process.

[0104] In addition, as shown in FIG. 17 , providing a reinforcing plate 14 on the support plate 13 can also help prevent the support plate 13 from having low strength and tilting and collapsing.

[0105] In some embodiments, the reinforcing plate 14 is also arranged on the rear side of the support plate 13 and fixedly connected to the support plate 13, and the third end 14a of the reinforcing plate 14 extends to the inner wall of the side plate 11 and is fixedly connected to the inner wall of the side plate 11, so that the reinforcing plate 14 is abutted and fixed to the inner wall of the side plate 11, thereby improving the connection strength between the overall supporting structure formed by the support plate 13 and the reinforcing plate 14 and the side plate 11, and avoiding the problem of tilting and collapsing of the support plate 13 when subjected to external force, thereby avoiding the problem of cracking and light leakage of the tape 3.

[0106] To ensure the overall strength of the support structure, the width of the reinforcing plate 14 is required to be as close as possible to the width of the supporting plate 13. In other words, the fourth end 14b of the reinforcing plate 14 is as close as possible to the side of the supporting plate 13 away from the side plate 11. The fourth end 14b of the reinforcing plate 14 is the end of the reinforcing plate 14 away from the side plate 11. The projection of the fourth end 14b of the reinforcing plate 14 on the back panel body 10 is the fourth side 142, and the projection of the third end 14a of the reinforcing plate 14 on the back panel body 10 is the third side 141. However, considering the assembly and use effects of the backlight assembly, in a preferred embodiment, the fourth end 14b of the reinforcing plate 14 does not protrude beyond the side of the supporting plate 13 away from the side plate 11. In other words, the fourth section of the reinforcing plate 14 does not protrude beyond the second end 13b of the support plate 13.

[0107] In some embodiments, the projection of the adhesive tape 3 on the back panel body 10 at least partially overlaps with the projection of the reinforcing plate 14 on the back panel body 10. Taking the left side of the display device as an example, the fourth end 14b of the reinforcing plate 14 extends at least to a position flush with the left side of the adhesive tape 3. This thickens the support structure corresponding to the adhesive tape 3, thereby increasing its strength. Even when subjected to external forces, the support plate 13 will not completely tilt or collapse, and at least the area between the third end 14a and the fourth end 14b of the reinforcing plate 14 is unlikely to tilt or collapse. Even if partial tilting occurs, it will not cause complete failure of the adhesive tape 3, thus avoiding the problem of light leakage from the display device.

[0108] In some embodiments, the projection of the adhesive tape 3 on the back panel body 10 is located within the projection of the reinforcing plate 14 on the back panel body 10. Taking the left side of the display device as an example, the second end 13b of the reinforcing plate 14 extends to a position flush with the right side edge of the adhesive tape 3, or extends to the right of the right side edge of the adhesive tape 3, so that the projection of the adhesive tape 3 on the back panel body 10 is completely located within the projection of the reinforcing plate 14 on the back panel body 10. This not only structurally strengthens the connection between the support plate 13 and the side panel 11, but also strengthens the position where the adhesive tape 3 is set, preventing the support plate 13 from tilting and collapsing.

[0109] The wider the width of the reinforcing plate 14, the greater the degree of reinforcement it provides to the support plate 13, and the less likely the support plate 13 is to tilt or sag. When the third end 14a of the reinforcing plate 14 is abutted and fixed to the side plate 11, since the fourth end 14b of the reinforcing plate 14 does not protrude from the side of the support plate 13 away from the side plate 11, the closer the second end 13b of the reinforcing plate 14 is to being flush with the side of the support plate 13 away from the side plate 11, the greater the supporting strength it provides. In the most preferred embodiment, the third end 14a of the reinforcing plate 14 is abutted and fixed to the side plate 11, and the fourth end 14b of the reinforcing plate 14 is flush with the side of the support plate 13 away from the side plate 11, that is, the width of the reinforcing plate 14 is the same as the width of the support plate 13.

[0110] In some embodiments, the reinforcing plate 14 and the supporting plate 13 are fixed together by welding.

[0111] In summary, in order to solve the problem of insufficient stress strength on the stress-bearing surface of the back panel 1, which causes the stress-bearing surface to sag or tilt and collapse, and further causes the problem of cracking of the adhesive tape 3 or light leakage from the panel, the embodiment of the present disclosure thickens the support plate 13. The thickening method includes bending the support plate 13 to form a first support portion 131 and a second support portion 132 that are stacked, or providing a reinforcing plate 14 on the rear side of the support plate 13. In order to solve the problem of sag, it is only necessary to thicken the positions that are prone to sag when subjected to stress, especially the positions where the adhesive tape 3 is provided, that is, to provide the second support portion 132 or the reinforcing plate 14 at these positions; in order to solve the problem of tilt and collapse, the second support portion 132 or the reinforcing plate 14 needs to abut against the bottom wall of the side panel 11 and be fixedly connected to the inner wall of the side panel 11.

[0112] The disclosed embodiment strengthens the structural strength of the support plate 13 by bending the support plate 13 or providing a reinforcing plate 14 on the rear side of the support plate 13. This prevents the support plate 13 from sinking or tilting and collapsing when subjected to external forces, and solves abnormal problems such as cracking of the adhesive tape 3 and light leakage from the panel caused by the sinking or collapsing of the support plate 13. Furthermore, since the structure at the support plate 13 is strengthened to meet the force requirements, the overall thickness of the back plate 1 can be reduced. After the thinning, the back plate 1 can still provide good support due to the structural reinforcement at the support plate 13, which is more conducive to the ultra-thin display device and reduces production costs.

[0113] As mentioned above, the backplane is an important component of the display device. However, in practical applications, the preparation process of the backplane usually requires bending the stamped raw material through stamping or other methods to make the backplane have a bent structure that connects and fixes the display module.

[0114] Because the bending structure of the backplane is relatively complex, it is usually necessary to use more than eight stations to perform multiple stamping and forming on the stamping raw material, which makes the preparation process of the backplane complicated and the preparation efficiency low. For example, as shown in Figures 19 and 20, in actual applications, the preparation process of the backplane usually requires bending the stamping raw material A100 by stamping or other methods so that the backplane 10 has a bending structure for connecting and fixing the display module. Among them, the stamping raw material A100 may include a main body A110, a first part A120, a second part A130, a third part A140 and a fourth part A150 connected in sequence. A first axis A111 is set between the main body A110 and the first part A120, a second axis A121 is set between the first part A120 and the second part A130, a third axis A131 is set between the second part A130 and the third part A140, and a fourth axis A141 is set between the third part A140 and the fourth part A150.

[0115] During the preparation of the back plate 10, due to the limitation of the fixed moving direction of the upper mold and the lower mold of the stamping equipment, interference and the like are prone to occur during the multiple stamping processes of the stamping raw material A100. It is usually necessary to first bend the fourth portion A150 toward the first surface of the main body A110 with the fourth axis A141 as the bending axis, and the bending angle of the fourth portion A150 is equal to 90 degrees. Then, with the fourth axis A141 as the bending axis, the fourth portion A150 is bent toward the first surface of the main body A110, and the bending angle of the fourth portion A150 is less than 90 degrees. Then, with the fourth axis A141 as the bending axis, the fourth portion A150 is bent toward the first surface of the main body A110, so that the fourth portion A150 can fit the third portion A140.

[0116] Then, using the second axis A121 as the bending axis, bend the second part A130 toward the first surface of the main body A110, and the bending angle of the second part A130 is equal to 90 degrees, so that the second part A130 is perpendicular to the main body A110; then using the second axis A121 as the bending axis, bend the second part A130 toward the first part A120, and the second part A130 is fitted with the first part A120; using the third axis A131 as the bending axis, bend the third part A140 toward the second part A130.

[0117] Finally, the first portion A120 is bent toward the first surface of the main body A110 with the first axis A111 as the bending axis. The bending angle of the first portion A120 is equal to 90 degrees to form the back plate 10.

[0118] It should be noted that after the stamping material A100 is stamped and bent multiple times, the main body A110 of the stamping material A100 can be used to form the bottom surface A11 of the back panel 10. The first portion A120 of the stamping material A100 can be used to form the outer side surface A12 of the back panel 10. The second portion A130 of the stamping material A100 can be used to form the side surface A13 of the back panel 10. The third portion A140 of the stamping material A100 can be used to form the front surface A14 of the back panel 10. The fourth portion A150 of the stamping material A100 can be used to form the back surface A15 of the back panel 10.

[0119] Since the bending structure of the back panel 10 is relatively complex, and different stamping directions need to be implemented at different workstations during the stamping process, and since the shape of the stamping material A100 is constantly bending and changing, the stamping process of the stamping material A100 requires multiple shaping and positioning. The multiple stamping processes of the stamping material A100 are also prone to interference and the like. Therefore, it is usually necessary to use more than eight workstations to perform multiple stamping forming on the stamping material A100, which makes the preparation process of the back panel 10 complicated and the preparation efficiency low.

[0120] In view of this, an embodiment of the present disclosure provides a method for preparing a backplane. When a stamped raw material is bent by stamping or other methods, a fourth portion can be bent toward the first surface of the main body at a single station, with the bending angle of the fourth portion being greater than 90 degrees. Since bending the second portion toward the first surface of the main body and bending the fourth portion toward the third portion do not interfere with each other, the above process can be accomplished at a single station, thereby simplifying the backplane preparation process.

[0121] Then, since the processes of bending the first part toward the second surface of the main body, bending the second part toward the first part, and bending the third part toward the second part will not cause interference, the above processes can be implemented using one workstation, and the first part can be bent toward the first surface of the main body using one workstation to form a back panel.

[0122] Compared with the related art that requires more than eight workstations to realize multiple stamping processes of stamping raw materials, the embodiment of the present disclosure provides a method for preparing a backboard, which can set different stamping processes so that some of the stamping processes can be integrated into the same workstation, so that only four workstations are needed to realize the preparation process of the backboard, thereby simplifying the preparation process of the backboard and improving the preparation efficiency of the backboard.

[0123] 18 to 20 , a method for preparing a backplane provided by an embodiment of the present disclosure may include the following steps:

[0124] S101, providing a stamping material, wherein the stamping material includes a main body, a first part, a second part, a third part, and a fourth part connected in sequence;

[0125] 19 and 20 , in some embodiments, the stamping material A100 can be a metal plate. The stamping material A100 can be subjected to multiple stamping and bending operations to form a bent structure of the first portion A120, the second portion A130, the third portion A140, and the fourth portion A150 of the stamping material A100. This allows the stamping material A100 to be bent into shape to form the back panel 10.

[0126] In some embodiments, the back plate 10 may include an F-shaped bending structure disposed on the first surface of the bottom surface A11 of the back plate 10 , thereby connecting and fixing the display module to the main body A110 through the F-shaped bending structure.

[0127] The F-shaped bending structure may include an outer side surface A12, a side surface A13, a front surface A14, and a back surface A15 connected in sequence. The first end of the outer side surface A12 is connected to the bottom surface A11 of the back plate 10, the second end of the outer side surface A12 may extend away from the first surface of the bottom surface A11, and the outer side surface A12 may be perpendicular to the bottom surface A11. The side surface A13 may be disposed on the inner side of the outer side surface A12, and the side surface A13 may be in contact with the outer side surface A12, with the end of the side surface A13 facing away from the outer side surface A12 extending toward the bottom surface A11. The length of the side surface A13 is less than the length of the outer side surface A12.

[0128] The first end of the front side A14 can be connected to the end of the side surface A13 facing away from the outer side surface A12. The second end of the front side A14 can extend in a direction away from the outer side surface A12. The extension direction of the front side A14 can be perpendicular to the extension direction of the side surface A13. The back side A15 is connected to the second end of the front side A14. The end of the back side A15 facing away from the second end of the front side A14 can extend toward the side surface A13. The back side A15 can be disposed on the side of the front side A14 facing the bottom surface A11. The back side A15 can be attached to the front side A14. The length of the back side A15 can be less than the length of the front side A14.

[0129] It is easy to understand that after the stamping material A100 is stamped and bent multiple times, the main body A110 of the stamping material A100 can be used to form the bottom surface A11 of the back panel 10. The first portion A120 of the stamping material A100 can be used to form the outer side surface A12 of the back panel 10. The second portion A130 of the stamping material A100 can be used to form the side surface A13 of the back panel 10. The third portion A140 of the stamping material A100 can be used to form the front surface A14 of the back panel 10. The fourth portion A150 of the stamping material A100 can be used to form the back surface A15 of the back panel 10.

[0130] In some embodiments, a first axis A111 may be defined between the body A110 and the first portion A120. A second axis A121 may be defined between the first portion A120 and the second portion A130. A third axis A131 may be defined between the second portion A130 and the third portion A140. A fourth axis A141 may be defined between the third portion A140 and the fourth portion A150.

[0131] It should be noted that at least one of the first axis A111, the second axis A121, the third axis A131, and the fourth axis A141 may be drawn on the surface of the stamping material A100 by marking or the like. Alternatively, at least one of the first axis A111, the second axis A121, the third axis A131, and the fourth axis A141 may be virtual, and the first axis A111, the second axis A121, the third axis A131, and the fourth axis A141 may be straight lines parallel to each other, used to indicate the positions of various parts of the stamping material A100.

[0132] For example, the portion of the stamped material A100 located on the first axis A111 away from the second axis A121 is set as the main body A110. The portion of the stamped material A100 located between the first axis A111 and the second axis A121 is set as the first portion A120. The portion of the stamped material A100 located between the second axis A121 and the third axis A131 is set as the second portion A130. The portion of the stamped material A100 located between the third axis A131 and the fourth axis A141 is set as the third portion A140. The portion of the stamped material A100 located on the fourth axis A141 away from the third axis A131 is set as the fourth portion A150.

[0133] In some embodiments, after providing the stamping material A100, the preparation method may further include: forming a first pre-stressing portion on the stamping material A100, the first pre-stressing portion corresponds to the second axis A121, and the first pre-stressing portion can be located on the first surface of the stamping material A100, and / or, a second pre-stressing portion can be formed on the stamping material A100, the second pre-stressing portion corresponds to the third axis A131, and the second pre-stressing portion is located on the second surface of the stamping material A100, and / or, a third pre-stressing portion can be formed on the stamping material A100, the third pre-stressing portion corresponds to the fourth axis A141, and the third pre-stressing portion is located on the first surface of the stamping material A100.

[0134] In some embodiments, at least one of the first pre-pressing portion, the second pre-pressing portion, and the third pre-pressing portion can be formed on the stamping material A100 by stamping or the like.

[0135] For example, a pre-bending punch can be used to form two stamping lines on the first surface of the stamped material A100. One of the stamping lines can coincide with the second axis A121, and the other can coincide with the fourth axis A141. The stamping line coinciding with the second axis A121 can form a first pre-pressed portion, and the stamping line coinciding with the fourth axis A141 can form a third pre-pressed portion.

[0136] A pre-bending punch may be used to form a stamping line on the second surface of the stamped material A100. The stamping line may coincide with the third axis A131, and the stamping line coincident with the third axis A131 may form a second pre-stressed portion.

[0137] By forming a first pre-pressing portion on the stamping material A100, the subsequent rotation process of the second part A130 around the second axis A121 can be made more stable. By forming a second pre-pressing portion on the stamping material A100, the subsequent rotation process of the third part A140 around the third axis A131 can be made more stable. By forming a third pre-pressing portion on the stamping material A100, the subsequent rotation process of the third part A140 around the third axis A131 can be made more stable, thereby making the forming process of the stamping material A100 more stable and the structure of the back plate 10 more stable and accurate.

[0138] S102, bending the fourth portion toward the first surface of the main body with the fourth axis as the bending axis, wherein the bending angle of the fourth portion is greater than 90 degrees;

[0139] 21-23 , in some embodiments, the fourth portion A150 may be bent toward the first surface of the main body A110 (ie, counterclockwise in the figures) by the first bending component A200 , and the bending angle of the fourth portion A150 is greater than 90 degrees.

[0140] In which, the first bending component A200 can include a first fixing member A210, a first upper die punch A220 and a first lower die punch A230, so that the fourth part A150 is bent toward the first surface of the main body A110 through the matching first fixing member A210, the first upper die punch A220 and the first lower die punch A230.

[0141] In some embodiments, the first fixing member A210 may include a first base A211 and a first stripper plate A212. The first base A211 and the first stripper plate A212 may be arranged in a vertical direction, and the first stripper plate A212 may be disposed above the first base A211. The first base A211 may be used to fit the first surface of the stamping material A100, and the first stripper plate A212 may be used to fit the second surface of the stamping material A100, thereby enabling the stamping material A100 to be fixed by the mutual cooperation of the first base A211 and the first stripper plate A212.

[0142] The first upper die punch A220 and the first lower die punch A230 are arranged on one side of the first fixing member A210 in the horizontal direction. The first upper die punch A220 and the first lower die punch A230 can be arranged in the vertical direction, and the first upper die punch A220 can be arranged above the first lower die punch A230.

[0143] For example, when the stamping material A100 is horizontally arranged between the first base A211 and the first stripper plate A212, at least part of the stamping material A100 can be arranged on the outside of the first base A211 and the first stripper plate A212, so that the stamping material A100 can be stamped and formed using the first upper die punch A220 and the first lower die punch A230, so that the part of the stamping material A100 arranged on the outside of the first base A211 and the first stripper plate A212 can be bent.

[0144] In some embodiments, the fourth portion A150 may be bent toward the first surface of the main body A110 by the first bending assembly A200 , which may include: fixing the horizontally placed third portion A140 by the first fixing member A210 .

[0145] It should be understood that the main body A110, the first part A120, the second part A130 and the third part A140 can all be placed between the first base A211 and the first blanking plate. The first base A211 fits the first surface of the stamping material A100, and the first stripper plate A212 fits the second surface of the stamping material A100, so that the fourth part A150 can be located on the outside of the first base A211 and the first stripper plate A212. Alternatively, the third part A140 can be placed between the first base A211 and the first blanking plate. Alternatively, the third part A140, and one or two of the main body A110, the first part A120 and the second part A130 can also be placed between the first base A211 and the first blanking plate. The embodiment of the present disclosure does not impose further restrictions on this, as long as it can ensure that the fourth part A150 is located on the outside of the first base A211 and the first stripper plate A212.

[0146] After the horizontally placed third part A140 is fixed by the first fixing part A210, the fourth part A150 can be bent toward the first surface of the main body A110 by the first fixing part A210 and the first upper die punch A220 with the fourth axis A141 as the bending axis, and the bending angle of the fourth part A150 can be less than or equal to 90 degrees.

[0147] The fourth portion A150 can be bent toward the first surface of the main body A110 by the first fixing member A210 and the first lower die punch A230 with the fourth axis A141 as the bending axis, and the bending angle of the fourth portion A150 can be less than or equal to 90 degrees.

[0148] It should be noted that, by bending the fourth part A150 toward the first surface of the main body A110 through the first bending component A200, the fourth part A150 can be stamped twice through the mutual cooperation between the first fixing part A210, the first upper die punch A220 and the first lower die punch A230 in the first bending component A200, so that the bending angle of the fourth part A150 is less than or equal to 90 degrees each time, and the two stamping processes will not cause interference, so that the process of bending the fourth part A150 toward the first surface of the main body A110 and the bending angle of the fourth part A150 is greater than 90 degrees can be achieved through one workstation.

[0149] In some embodiments, referring to Figures 21-25 , in the first bending assembly A200, the first fixing member A210 may be provided with a first affixed surface A213. The first affixed surface A213 may be provided on a side of the first base A211 near the first upper die punch A220 and the first lower die punch A230. The first affixed surface A213 may be tilted. For example, in a vertically downward direction, the first affixed surface A213 may be tilted away from the first lower die punch A230.

[0150] When the stamping material A100 is horizontally positioned, the fourth axis A141 can coincide with the top of the first joining surface A213, and the angle formed between the fourth portion A150 and the first joining surface A213 can be greater than 90 degrees. As the fourth portion A150 rotates toward the first surface of the main body A110, the angle formed between the fourth portion A150 and the first joining surface A213 gradually decreases.

[0151] The first lower die punch A230 may be provided with a second fitting surface A231, and the second fitting surface A231 may be arranged parallel to the first fitting surface A213, so that the first fitting surface A213 and the second fitting surface A231 are used in conjunction with each other to achieve bending of the fourth portion A150.

[0152] The first upper die punch A220 can move vertically, and the first lower die punch A230 can move vertically toward the first upper die punch A220. After the third portion A140 is fixed by the first fixing member A210, the preparation method may include controlling the first upper die punch A220 to move vertically downward to cause the fourth portion A150 to bend toward the first fitting surface A213, with the bending angle of the fourth portion A150 being equal to 90 degrees.

[0153] Referring to Figures 21 to 24, the first fitting surface A213 is tilted in a direction away from the first lower die punch A230, and the angle formed by the first fitting surface A213 and the fourth part A150 is greater than 90 degrees. When the bending angle of the fourth part A150 is equal to 90 degrees, an angle is formed between the fourth part A150 and the first fitting surface A213, and the fourth part A150 is not fitted with the first fitting surface A213.

[0154] Then, the first lower die punch A230 can be controlled to move upward in the vertical direction, and the second fitting surface A231 drives the fourth part A150 to bend toward the first fitting surface A213. The first surface of the fourth part A150 fits with the first fitting surface A213, and the second surface of the fourth part A150 fits with the second fitting surface A231, so that the bending angle of the fourth part A150 is greater than 90 degrees.

[0155] Alternatively, referring to Figures 21-25 , the first upper die punch A220 can move vertically, and the first lower die punch A230 can move horizontally toward or away from the first fixing member A210. After the third portion A140 is fixed by the first fixing member A210, the preparation method can further include controlling the first upper die punch A220 to move vertically downward to cause the fourth portion A150 to bend toward the first fitting surface A213. The bending angle of the fourth portion A150 can be equal to 90 degrees.

[0156] The first fitting surface A213 is tilted in a direction away from the first lower die punch A230, and the angle formed between the first fitting surface A213 and the fourth part A150 is greater than 90 degrees. When the bending angle of the fourth part A150 is equal to 90 degrees, an angle is formed between the fourth part A150 and the first fitting surface A213, and the fourth part A150 is not fitted with the first fitting surface A213.

[0157] Then, the first lower die punch A230 is controlled to move horizontally toward the first fixing part A210, and the second fitting surface A231 drives the fourth part A150 to bend toward the first fitting surface A213. The first surface of the fourth part A150 fits with the first fitting surface A213, and the second surface of the fourth part A150 fits with the second fitting surface A231, so that the bending angle of the fourth part A150 is greater than 90 degrees.

[0158] In some embodiments, the fourth portion A150 is bent toward the first surface of the main body A110, and the bending angle of the fourth portion A150 can be set to be greater than or equal to 100 degrees and less than or equal to 130 degrees. For example, the bending angle of the fourth portion A150 can be set within any angle range of 100 degrees to 110 degrees, 110 degrees to 120 degrees, and 120 degrees to 130 degrees.

[0159] By adopting the above-mentioned technical solution, when the stamping material A100 is stamped and bent by the first bending component A200, the first upper die punch A220 moves downward in the vertical direction, thereby realizing the first bending of the stamping material A100 by the first bending component A200 through the first fixing member A210 and the first upper die punch A220; the first lower die punch A230 moves in the vertical direction or horizontal direction, so that the first lower die punch A230 and the first fixing member A210 realize the second bending of the stamping material A100 by the first bending component A200, thereby preventing interference in the two bending processes of the stamping material A100 by the first bending component A200, and making the bending process of the fourth part A150 more stable.

[0160] Moreover, since the first bending component A200 will not interfere with the two bending processes of the stamping material A100, the two stamping and bending processes of the stamping material A100 by the first bending component A200 can be implemented in one workstation. Compared with the related art that requires two stamping and bending processes to be implemented separately in two workstations, the preparation method of the backboard 10 in the embodiment of the present disclosure can reduce the number of workstations and simplify the preparation process of the backboard 10.

[0161] After the fourth portion A150 is bent toward the first surface of the main body A110 by the first bending assembly A200, the first lower die punch A230 is controlled to separate from the stamping material A100, and then the first upper die punch A220 is controlled to separate from the stamping material A100. The first stripper plate A212 is then moved vertically to separate from the stamping material A100, thereby allowing the stamping material A100 to be removed from between the first stripper plate A212 and the first base A211.

[0162] S103, bending the second portion toward the first surface of the main body with the second axis as the bending axis, wherein the bending angle of the second portion is less than 90 degrees;

[0163] 26-28 , in some embodiments, the second portion A130 may be bent toward the first surface of the main body A110 (ie, counterclockwise in the figures) by the second bending assembly A300 , and the bending angle of the second portion A130 is less than 90 degrees.

[0164] Among them, the second bending component A300 includes a second fixing part A310, a second upper die punch A320 and a second lower die punch A330, so as to bend the second part A130 toward the first surface of the main body A110 through the matching second fixing part A310, the second upper die punch A320 and the second lower die punch A330.

[0165] In some embodiments, the second fixing member A310 may include a second base A311 and a second stripper plate A312. The second base A311 and the second stripper plate A312 may be arranged in a vertical direction, and the second stripper plate A312 may be disposed above the second base A311.

[0166] The second base A311 can be used to fit the first surface of the stamping material A100, and the second stripper plate A312 can be used to fit the second surface of the stamping material A100, so that the stamping material A100 can be fixed by the mutual cooperation of the second base A311 and the second stripper plate A312.

[0167] The second upper die punch A320 and the second lower die punch A330 are arranged on one side of the second fixing member A310 in the horizontal direction. The second upper die punch A320 and the second lower die punch A330 can be arranged in the vertical direction, and the second upper die punch A320 can be arranged above the second lower die punch A330.

[0168] For example, when the stamping material A100 is horizontally arranged between the second base A311 and the second stripper plate A312, at least part of the stamping material A100 can be arranged on the outside of the second base A311 and the second stripper plate A312, so that the stamping material A100 can be stamped and formed using the second upper die punch A320 and the second lower die punch A330, so that the part of the stamping material A100 arranged on the outside of the second base A311 and the second stripper plate A312 can be bent.

[0169] In some embodiments, the second portion A130 is bent toward the first surface of the main body A110 by the second bending assembly A300, including: the first portion A120 can be fixed horizontally by a second fixing member A310. Then, the second portion A130 can be bent toward the first surface of the main body A110 by the second fixing member A310 and the second upper punch A320 with the second axis A121 as the bending axis, with the bending angle of the second portion A130 being less than 90 degrees.

[0170] In some embodiments, in the second bending assembly A300, the second upper die punch A320 can move in a vertical direction. The second upper die punch A320 can have a third abutment surface A321, and the third abutment surface A321 can be tilted. For example, in a vertically downward direction, the third abutment surface A321 can be tilted away from the second base A311.

[0171] In some embodiments, after fixing the first part A120 by the second fixing member A310, the preparation method further includes: controlling the second upper die punch A320 to move downward in the vertical direction to drive the second part A130 to bend downward, and the second part A130 is bonded to the third bonding surface A321, and at least part of the fourth part A150 is located above the fourth bonding surface A331.

[0172] The second upper die punch A320 moves downward in the vertical direction, and the third fitting surface A321 abuts against the top surface of the second part A130, driving the second part A130 to bend downward in the vertical direction. The second part A130 fits with the third fitting surface A321, and the bending angle of the second part A130 is less than 90 degrees.

[0173] It should be noted that the second portion A130 is bent toward the first surface of the main body A110, and the bending angle of the second portion A130 can be set to be greater than or equal to 45 degrees and less than or equal to 80 degrees. For example, the bending angle of the second portion A130 can be set to any angle range of 45 degrees to 50 degrees, 50 degrees to 60 degrees, 60 degrees to 70 degrees, and 70 degrees to 80 degrees.

[0174] S104, bending the fourth portion toward the third portion with the fourth axis as the bending axis, so that the fourth portion is in contact with the third portion;

[0175] 26 to 29 , in some embodiments, the fourth portion A150 may be bent toward the third portion A140 by the second bending assembly A300 , thereby enabling the bending process of the second portion A130 and the fourth portion A150 to be achieved by the second bending assembly A300 .

[0176] In some embodiments, the fourth portion A150 can be bent toward the third portion A140 using the second upper punch A320 and the second lower punch A330 with the fourth axis A141 as the bending axis, so that the fourth portion A150 fits with the third portion A140.

[0177] In the second bending assembly A300, the second lower die punch A330 can move toward the second upper die punch A320 along the vertical direction. The second lower die punch A330 has a fourth fitting surface A331, and the fourth fitting surface A331 is parallel to the third fitting surface A321.

[0178] Bending the fourth part A150 toward the third part A140 through the second bending component A300 can include: controlling the second lower die punch A330 to move upward in the vertical direction to drive the fourth part A150 to bend upward, the first surface of the fourth part A150 is in contact with the third fitting surface A321, and the second surface of the fourth part A150 is in contact with the fourth fitting surface A331.

[0179] By adopting the above-mentioned technical solution, the second upper die punch A320 is controlled to move downward in the vertical direction to drive the second part A130 to bend downward, the second part A130 is fitted with the third fitting surface A321, and at least part of the fourth part A150 is located above the fourth fitting surface A331, so that the bending of the second part A130 can be achieved by the second upper die punch A320, and at least part of the fourth part A150 is located above the fourth fitting surface A331.

[0180] The second lower die punch A330 is controlled to move upward in the vertical direction to drive the fourth part A150 to bend upward, at least part of the fourth part A150 is located above the fourth fitting surface A331, and the fourth part A150 is also fitted to the third part A140, so that the fourth fitting surface A331 can drive the fourth part A150 to bend, the first surface of the fourth part A150 is fitted to the third fitting surface A321, and the second surface of the fourth part A150 is fitted to the fourth fitting surface A331.

[0181] In some embodiments, the bending of the second part A130 and the fourth part A150 can be achieved through the mutual cooperation between the second fixing member A310, the second upper die punch A320 and the second lower die punch A330 in the second bending component A300. The two stamping processes will not cause interference, so that the two stamping and bending processes of the stamping raw material A100 by the second bending component A300 can be achieved in one workstation. Compared with the related art that requires two stamping and bending processes to be achieved separately at two workstations, the preparation method of the backboard 10 in the embodiment of the present disclosure can reduce the number of workstations and simplify the preparation process of the backboard 10.

[0182] After the stamping material A100 is bent toward the first surface of the main body A110 by the second bending assembly A300, the second lower die punch A330 is controlled to separate from the stamping material A100, and then the second upper die punch A320 is controlled to separate from the stamping material A100. The second stripper plate A312 is then moved vertically to separate from the stamping material A100, thereby allowing the stamping material A100 to be removed from between the second stripper plate A312 and the second base A311.

[0183] S105, bending the first portion toward the second surface of the main body with the first axis as the bending axis, wherein the bending angle of the first portion is less than 90 degrees;

[0184] 30-32 , in some embodiments, the first portion A120 may be bent toward the second surface of the body A110 by a third bending assembly A400 . The third bending assembly A400 may include a third fixing member A410 and a third upper die punch A420 .

[0185] In the third bending assembly A400, the third fixing member A410 may be provided with a fifth affixed surface A411. The fifth affixed surface A411 may be tilted and may face the third upper die punch A420. The fifth affixed surface A411 may be tilted upward in a direction close to the third lower die punch A430.

[0186] In some embodiments, the third upper die punch A420 may be provided with a seventh joining surface A421, which may be parallel to the fifth joining surface A411. The third upper die punch A420 may be movable vertically toward the third fixing member A410 so that the seventh joining surface A421 cooperates with the fifth joining surface A411.

[0187] In some embodiments, bending the first portion A120 by the third bending assembly A400 includes: fixing the horizontally placed main body A110 by the third fixing member A410. The main body A110 can be placed on the surface of the third fixing member A410 facing the third upper die punch A420, so that the third fixing member A410 provides a certain degree of support and fixation for the main body A110.

[0188] The main body A110 can be directly placed on the third fixing member A410. Alternatively, the main body A110 can be fixed to the third fixing member A410 through a fixing member to make the connection between the main body A110 and the third fixing member A410 more stable and reduce the possibility of the main body A110 being offset.

[0189] Then, the first portion A120 can be bent toward the second surface of the main body A110 by the third fixing member A410 and the third upper die punch A420 with the first axis A111 as the bending axis, and the bending angle of the first portion A120 is less than 90 degrees.

[0190] In some embodiments, the third upper die punch A420 can be controlled to move downward in the vertical direction toward the third fixing member A410 to drive the first part A120 to bend upward, the first surface of the first part A120 is fitted with the fifth fitting surface A411, and the second surface of the first part A120 is fitted with the seventh fitting surface A421, thereby realizing the bending process of the first part A120.

[0191] It should be noted that the first surface of the first portion A120 may be completely in contact with the fifth contact surface A411, or the first surface may be partially in contact with the fifth contact surface A411. The second surface of the first portion A120 may be completely in contact with the seventh contact surface A421.

[0192] In some embodiments, the first portion A120 is bent toward the second surface of the main body A110, and the bending angle of the first portion A120 can be set to be greater than or equal to 5 degrees and less than or equal to 20 degrees. For example, the bending angle of the first portion A120 can be set to any angle range of 5 degrees to 10 degrees, 10 degrees to 15 degrees, and 15 degrees to 20 degrees.

[0193] S106, using the second axis as a bending axis, bending the second portion toward the first portion, so that the second portion is in contact with the first portion; using the third axis as a bending axis, bending the third portion toward the second portion;

[0194] 30-33 , in some embodiments, the second portion A130 can be bent toward the first portion A120 and the third portion A140 can be bent toward the second portion A130 by a third bending assembly A400. The third bending assembly A400 can include a third lower die punch A430, which can be moved toward or away from the third fixing member A410 in a horizontal direction.

[0195] In some embodiments, in the third bending assembly A400, the third fixing member A410 may be provided with a sixth affixed surface A412. The sixth affixed surface A412 may be tilted and may face the third lower die punch A430. The sixth affixed surface A412 may be tilted downward in a direction approaching the third lower die punch A430.

[0196] The third lower die punch A430 may be provided with an eighth fitting surface A431 and a ninth fitting surface A432.

[0197] The eighth joining surface A431 can be parallel to the fifth joining surface A411, and the ninth joining surface A432 can be parallel to the sixth joining surface A412. The third lower die punch A430 can be moved horizontally toward the third fixing member A410 and the third upper die punch A420 so that the eighth joining surface A431 cooperates with the fifth joining surface A411, and the ninth joining surface A432 cooperates with the sixth joining surface A412.

[0198] In some embodiments, the second portion A130 can be bent toward the first portion A120 using the third fixture A410 and the third lower die punch A430 with the second axis A121 as the bending axis, so that the second portion A130 is aligned with the first portion A120. The third portion A140 can be bent toward the second portion A130 using the third fixture A410 and the third lower die punch A430 with the third axis A131 as the bending axis.

[0199] After bending the first part A120 by the third upper die punch A420 and the third fixing part A410, the method may include: controlling the second lower die punch A330 to move horizontally toward the third fixing part A410 and the third upper die punch A420; the ninth fitting surface A432 drives the second part A130 to fit with the first part A120, and the ninth fitting surface A432 fits with the surface of the second part A130 away from the first part A120.

[0200] The third lower die punch A430 can drive the third part A140 to bend toward the second part A130 through the eighth fitting surface A431. The eighth fitting surface A431 fits with the surface of the third part A140 away from the fourth part A150. The sixth fitting surface A412 fits with the surface of the fourth part A150 away from the third part A140.

[0201] In this way, when the first part A120, the second part A130 and the third part A140 are bent by the third bending component A400, the first part A120 can be bent toward the second surface of the main body A110 by the third fixing part A410 and the third upper die punch A420, the second part A130 can be bent by the third fixing part A410 and the third lower die punch A430, the second part A130 is fitted with the first part A120, and the third part A140 can be bent by the third fixing part A410 and the third lower die punch A430.

[0202] The third upper die punch A420 is controlled to move downward in the vertical direction toward the third fixing member A410 to drive the first part A120 to bend upward, and the second lower die punch A330 is controlled to move horizontally toward the third fixing member A410 and the third upper die punch A420 to drive the second part A130 to bend. The eighth fitting surface A431 drives the third part A140 to bend toward the second part A130. The eighth fitting surface A431 is fitted with the surface of the third part A140 away from the fourth part A150, so that the first part A120, the second part A130 and the third part A140 can be bent by using the matching third fixing member A410, the third upper die punch A420 and the third lower die punch A430, and the above-mentioned stamping process will not cause interference, so that it can be achieved through one workstation.

[0203] After the stamping material A100 is bent by the third bending assembly A400, the third lower die punch A430 can be controlled to separate from the stamping material A100, and then the third upper die punch A420 can be controlled to separate from the stamping material A100. The stamping material A100 is then moved in a vertical direction to be removed from the third fixing member A410.

[0204] S107 , using the first axis as a bending axis, bend the first portion toward the first surface of the main body, wherein the bending angle of the first portion is greater than 90 degrees, to form a back plate.

[0205] 34-36 , in some embodiments, the first portion A120 can be bent toward the first surface of the body A110 by a fourth bending assembly A500. The fourth bending assembly A500 can include a fourth fixing member A510 and a fourth upper die punch A520. The fourth upper die punch A520 can move vertically to achieve bending of the first portion A120 through the cooperation of the fourth fixing member A510 and the fourth upper die punch A520.

[0206] In some embodiments, the fourth fixing member A510 may include a fourth base A511 and a fourth stripper plate A512. The fourth base A511 and the fourth stripper plate A512 may be arranged in a vertical direction, and the fourth stripper plate A512 may be disposed above the fourth base A511. The fourth base A511 may be used to fit the first surface of the stamping material A100, and the fourth stripper plate A512 may be used to fit the second surface of the stamping material A100, thereby enabling the stamping material A100 to be fixed by the mutual cooperation of the fourth base A511 and the fourth stripper plate A512.

[0207] When the stamping material A100 is horizontally arranged between the fourth base A511 and the fourth stripping plate A512, at least part of the stamping material A100 can be arranged on the outside of the fourth base A511 and the fourth stripping plate A512, so that the stamping material A100 can be stamped and formed using the fourth upper die punch A520, so that the part of the stamping material A100 arranged on the outside of the fourth base A511 and the fourth stripping plate A512 can be bent.

[0208] In some embodiments, the first portion A120 is bent toward the first surface of the main body A110 by the fourth bending assembly A500, including: the main body A110 can be fixed horizontally by the fourth fixing member A510. Then, the first portion A120 can be bent toward the first surface of the main body A110 by the fourth fixing member A510 and the fourth upper die punch A520 with the first axis A111 as the bending axis, and the bending angle of the first portion A120 is greater than 90 degrees.

[0209] It should be noted that since the first part A120 is facing the second surface of the main body A110, when the first part A120 is bent toward the first surface of the main body A110 by the fourth bending component A500 so that the first part A120 is perpendicular to the main body A110, the bending angle of the first part A120 is greater than 90 degrees.

[0210] After the stamping material A100 is bent toward the first surface of the main body A110 by the fourth bending assembly A500, the fourth upper die punch A520 can be controlled to separate from the stamping material A100. The fourth stripper plate A512 is then moved vertically to separate from the stamping material A100, thereby allowing the stamping material A100 to be removed from between the fourth stripper plate A512 and the fourth base A511.

[0211] The present disclosure also provides a backboard manufacturing device for bending a stamped material A100. The stamped material A100 includes a main body A110, a first portion A120, a second portion A130, a third portion A140, and a fourth portion A150 connected in sequence. A first axis A111 is defined between the main body A110 and the first portion A120, a second axis A121 is defined between the first portion A120 and the second portion A130, a third axis A131 is defined between the second portion A130 and the third portion A140, and a fourth axis A141 is defined between the third portion A140 and the fourth portion A150.

[0212] The backplane manufacturing device may include a first bending assembly A200, a second bending assembly A300, a third bending assembly A400, and a fourth bending assembly A500. The device may include one or more of the first bending assembly A200, the second bending assembly A300, the third bending assembly A400, and the fourth bending assembly A500. Specifically, the device may be configured as follows:

[0213] In some embodiments, the first bending component A200 can be configured as follows: with the fourth axis A141 as the bending axis, the first bending component A200 is used to bend the fourth portion A150 toward the first surface of the main body A110, and the bending angle of the fourth portion A150 is greater than 90 degrees.

[0214] The first bending assembly A200 may include a first fixing member A210, a first upper die punch A220 and a first lower die punch A230, so as to bend the fourth part A150 toward the first surface of the main body A110 through the matching first fixing member A210, the first upper die punch A220 and the first lower die punch A230.

[0215] In some embodiments, the first fixing member A210 may include a first base A211 and a first stripper plate A212.

[0216] The first base A211 and the first stripper plate A212 can be arranged in a vertical direction, and the first stripper plate A212 can be disposed above the first base A211. The first base A211 can be used to fit the first surface of the stamping material A100, and the first stripper plate A212 can be used to fit the second surface of the stamping material A100, so that the stamping material A100 can be fixed by the mutual cooperation of the first base A211 and the first stripper plate A212.

[0217] The first upper die punch A220 and the first lower die punch A230 are arranged on one side of the first fixing member A210 in the horizontal direction. The first upper die punch A220 and the first lower die punch A230 can be arranged in the vertical direction, and the first upper die punch A220 can be arranged above the first lower die punch A230.

[0218] In some embodiments, the first fixing member A210 in the first bending assembly A200 may be provided with a first affixed surface A213. The first affixed surface A213 may be provided on a side of the first base A211 near the first upper die punch A220 and the first lower die punch A230. The first affixed surface A213 may be tilted. For example, in a vertically downward direction, the first affixed surface A213 may be tilted away from the first lower die punch A230.

[0219] When the stamping material A100 is horizontally positioned, the fourth axis A141 can coincide with the top of the first joining surface A213, and the angle formed between the fourth portion A150 and the first joining surface A213 can be greater than 90 degrees. As the fourth portion A150 rotates toward the first surface of the main body A110, the angle formed between the fourth portion A150 and the first joining surface A213 gradually decreases.

[0220] The first lower die punch A230 may be provided with a second fitting surface A231, and the second fitting surface A231 may be arranged parallel to the first fitting surface A213, so that the first fitting surface A213 and the second fitting surface A231 are used in conjunction with each other to achieve bending of the fourth portion A150.

[0221] In the first bending assembly A200, the first upper die punch A220 can move vertically, and the first lower die punch A230 can move vertically toward the first upper die punch A220. Alternatively, in the first bending assembly A200, the first upper die punch A220 can move vertically, and the first lower die punch A230 can move horizontally toward or away from the first fixing member A210.

[0222] The second bending assembly A300 can be configured to bend the second portion A130 toward the first surface of the body A110 with the second axis A121 as the bending axis, with the bending angle of the second portion A130 being less than 90 degrees. The second bending assembly A300 can be configured to bend the fourth portion A150 toward the third portion A140 with the fourth axis A141 as the bending axis, so that the fourth portion A150 is aligned with the third portion A140.

[0223] In some embodiments, the second bending component A300 includes a second fixing member A310, a second upper die punch A320 and a second lower die punch A330 to bend the second part A130 toward the first surface of the main body A110 through the matching second fixing member A310, the second upper die punch A320 and the second lower die punch A330.

[0224] In some embodiments, the second fixing member A310 may include a second base A311 and a second stripper plate A312. The second base A311 and the second stripper plate A312 may be arranged in a vertical direction, and the second stripper plate A312 may be disposed above the second base A311. The second base A311 may be used to fit the first surface of the stamping material A100, and the second stripper plate A312 may be used to fit the second surface of the stamping material A100, thereby enabling the stamping material A100 to be fixed by the mutual cooperation of the second base A311 and the second stripper plate A312.

[0225] The second upper die punch A320 and the second lower die punch A330 are arranged on one side of the second fixing member A310 in the horizontal direction. The second upper die punch A320 and the second lower die punch A330 can be arranged in the vertical direction, and the second upper die punch A320 can be arranged above the second lower die punch A330.

[0226] In the second bending assembly A300, the second upper die punch A320 can move in a vertical direction. The second upper die punch A320 can have a third abutment surface A321, which can be tilted. For example, in a vertically downward direction, the third abutment surface A321 can be tilted away from the second base A311.

[0227] The second upper die punch A320 can move downward in the vertical direction, and the third fitting surface A321 abuts against the top surface of the second part A130, and drives the second part A130 to bend downward in the vertical direction. The second part A130 fits with the third fitting surface A321, and the bending angle of the second part A130 is less than 90 degrees.

[0228] The second lower die punch A330 can move toward the second upper die punch A320 along the vertical direction. The second lower die punch A330 has a fourth fitting surface A331, and the fourth fitting surface A331 is parallel to the third fitting surface A321.

[0229] The third bending assembly A400 can be configured to bend the second portion A130 toward the first portion A120 with the second axis A121 as the bending axis, so that the second portion A130 is aligned with the first portion A120. The third bending assembly A400 can be configured to bend the third portion A140 toward the second portion A130 with the third axis A131 as the bending axis.

[0230] The third bending assembly A400 may include a third fixing member A410 and a third upper die punch A420 that cooperate with each other.

[0231] In some embodiments, in the third bending assembly A400, the third fixing member A410 may be provided with a fifth affixed surface A411. The fifth affixed surface A411 may be tilted and may face the third upper die punch A420. The fifth affixed surface A411 may be tilted upward in a direction approaching the third lower die punch A430.

[0232] In some embodiments, the third upper die punch A420 may be provided with a seventh joining surface A421, which may be parallel to the fifth joining surface A411. The third upper die punch A420 may be movable vertically toward the third fixing member A410 so that the seventh joining surface A421 cooperates with the fifth joining surface A411.

[0233] In the third bending assembly A400, the third fixing member A410 may be provided with a sixth bonding surface A412. The sixth bonding surface A412 may be tilted and may face the third lower die punch A430. The sixth bonding surface A412 may be tilted downward in a direction close to the third lower die punch A430.

[0234] The third lower die punch A430 may be provided with an eighth fitting surface A431 and a ninth fitting surface A432.

[0235] The eighth joining surface A431 can be parallel to the fifth joining surface A411, and the ninth joining surface A432 can be parallel to the sixth joining surface A412. The third lower die punch A430 can be moved horizontally toward the third fixing member A410 and the third upper die punch A420 so that the eighth joining surface A431 cooperates with the fifth joining surface A411, and the ninth joining surface A432 cooperates with the sixth joining surface A412.

[0236] The fourth bending component A500 can be configured as follows: with the first axis A111 as the bending axis, the fourth bending component A500 is used to bend the first portion A120 toward the first surface of the main body A110, and the bending angle of the first portion A120 is greater than 90 degrees to form the back panel 10.

[0237] In some embodiments, the fourth bending assembly A500 may include a fourth fixing member A510 and a fourth upper die punch A520. The fourth upper die punch A520 may be movable in a vertical direction to achieve bending of the first portion A120 through the matching fourth fixing member A510 and the fourth upper die punch A520.

[0238] In some embodiments, the fourth fixing member A510 may include a fourth base A511 and a fourth stripper plate A512. The fourth base A511 and the fourth stripper plate A512 may be arranged in a vertical direction, and the fourth stripper plate A512 may be disposed above the fourth base A511. The fourth base A511 may be used to fit the first surface of the stamping material A100, and the fourth stripper plate A512 may be used to fit the second surface of the stamping material A100, thereby enabling the stamping material A100 to be fixed by the mutual cooperation of the fourth base A511 and the fourth stripper plate A512.

Claims

1. A display device, comprising: A display panel for displaying image information; A backplane, comprising: A backplane body, which is disposed at an interval from the display panel at the rear side of the display panel; Side plates, which are formed by protruding forward from the edge of the backplane body; A support plate, which is disposed opposite to the backplane body, and a first end of the support plate is connected to the inner wall of the side plate, and a tape for fixing the display panel is provided on a side surface of the support plate facing away from the backplane body; Wherein, a second end of the support plate is disposed opposite to the first end, and the support plate is bent forward or backward at least once between the first end and the second end to form a first support portion and at least one second support portion stacked with the first support portion; At least a part of the projection of the tape on the backplane body coincides with the projection of the second support portion on the backplane body.

2. The display device according to claim 1, wherein the bending angles of all the bending points formed between the first end and the second end of the support plate are all 180°.

3. The display device according to claim 2, wherein the width of the second support portion is A1, the width of the tape is C, and A1≥C / 3.

4. The display device according to claim 2, wherein the projection of the tape on the backplane body is located within the projection of the second support portion on the backplane body.

5. The display device according to claim 4, wherein the width of the second support portion is smaller than the width of the first support portion.

6. The display device according to claim 3, wherein the minimum distance between the second support portion and the side plate is x, and 0<x<C / 3.

7. The display device according to any one of claims 1 to 6, wherein the material of the backplane is galvanized steel sheet, and the thickness of the backplane is less than or equal to 0.6 mm.

8. The display device according to claim 1, wherein the support plate is bent backward between the first end and the second end to form the first support portion and the second support portion located between the first support portion and the backplane body, and there is a gap between one layer of the second support portion far from the first support portion and the backplane body.

9. The display device according to claim 1, wherein the side plate is formed by bending the backplane body forward, and the side plate is bent inward twice to form a connecting plate and the support plate, the connecting plate is attached to the inner wall of the side plate, and the support plate is formed at one end of the connecting plate close to the backplane body.

10. The display device according to claim 9, wherein the angle of the first inward bend of the side plate is 180°, and the angle of the second bend of the side plate is 90°.

11. The display device according to claim 1, wherein the side plate is formed on the front side of the backplane body and is connected to the edge of the backplane body; The first support portion is formed between the first end of the support plate and the first bending point from the first end to the second end, the second support portion is formed between the first bending point from the first end to the second end and the second end, and the second support portion abuts against the inner wall of the side plate and is fixedly connected to the side plate.

12. The display device according to claim 11, wherein the first support portion is disposed in contact with at least one layer of the second support portions.

13. The display device according to claim 12, wherein the bending angles of all the bending points formed between the first end and the second end of the support plate are all 180°.

14. The display device according to claim 11, wherein the support plate is bent backward between the first end and the second end to form the first support portion and a second support portion located between the first support portion and the backplane body.

15. The display device according to claim 14, wherein the included angle between the first support portion and an adjacent layer of the second support portions is α, and 0° ≤ α ≤ 5°.

16. The display device according to claim 15, wherein the included angle between any two adjacent layers of the second support portions is β, and α ≤ β ≤ 2α.

17. The display device according to claim 11, wherein the support plate is bent backward once between the first end and the second end to form one layer of the first support portion and one layer of the second support portion, and the second end of the support plate is in contact and fixed with the inner wall of the side plate.

18. The display device according to claim 11, wherein the side plate is formed by bending the backplane body forward, and the side plate is bent inward twice to form a connecting plate and the support plate. The connecting plate is in contact with the inner wall of the side plate, and the support plate is formed at one end of the connecting plate close to the backplane body.

19. The display device according to claim 17, wherein the angle of the first inward bend of the side plate is 180°, and the angle of the second bend of the side plate is 90°.

20. The display device according to claim 1, further comprising: a reinforcing plate, which is in contact and fixed with the side of the support plate facing the backplane body; wherein, at least a part of the projection of the tape on the backplane body coincides with the projection of the reinforcing plate on the backplane body.

21. The display device according to claim 20, wherein the projection of the tape on the backplane body includes a first side edge and a second side edge which are oppositely arranged, and both the first side edge and the second side edge are parallel to the side plate; the projection of the reinforcing plate on the backplane body includes a third side edge and a fourth side edge which are oppositely arranged, and both the third side edge and the fourth side edge are parallel to the side plate; one of the first side edge and the second side edge is located between the third side edge and the fourth side edge, and the other coincides with the third side edge or the fourth side edge or is located outside the projection of the reinforcing plate on the backplane body.

22. The display device according to claim 21, wherein both the first side edge and the second side edge are located between the third side edge and the fourth side edge; or, both the third side edge and the fourth side edge are located between the first side edge and the second side edge.

23. The display device according to claim 21, wherein the first side edge coincides with the third side edge, and the second side edge coincides with the fourth side edge.

24. The display device according to claim 20, wherein the width of the reinforcing plate is less than or equal to the width of the support plate, and one side surface of the reinforcing plate away from the side plate does not protrude from one side surface of the support plate away from the side plate.

25. The display device according to claim 20, wherein the distance between one side surface of the reinforcing plate facing the side plate and the inner wall of the side plate is x, and x > 0.

26. The display device according to claim 20, wherein the material of the back plate is galvanized steel sheet, and the thickness of the back plate is less than or equal to 0.6 mm.

27. The display device according to claim 20, wherein one end of the reinforcing plate extends to the inner wall of the side plate and is fixedly connected to the inner wall of the side plate.

28. The display device according to claim 27, wherein at least a part of the projection of the tape on the back plate body coincides with the projection of the reinforcing plate on the back plate body.

29. The display device according to claim 27, wherein the projection of the tape on the back plate body is located within the projection of the reinforcing plate on the back plate body.

30. A method for manufacturing a back plate, applied to the display device according to any one of claims 1-29, the display device including a back plate, the method comprising: providing a stamping raw material, the stamping raw material including a main body, a first part, a second part, a third part and a fourth part connected in sequence; a first axis is provided between the main body and the first part, a second axis is provided between the first part and the second part, a third axis is provided between the second part and the third part, and a fourth axis is provided between the third part and the fourth part; taking the fourth axis as a bending axis, bending the fourth part towards the first surface of the main body, and the bending angle of the fourth part is greater than 90 degrees; taking the second axis as a bending axis, bending the second part towards the first surface of the main body, and the bending angle of the second part is less than 90 degrees; taking the fourth axis as a bending axis, bending the fourth part towards the third part, and the fourth part fits with the third part; taking the first axis as a bending axis, bending the first part towards the second surface of the main body, and the bending angle of the first part is less than 90 degrees; taking the second axis as a bending axis, bending the second part towards the first part, and the second part fits with the first part; taking the third axis as a bending axis, bending the third part towards the second part; taking the first axis as a bending axis, bending the first part towards the first surface of the main body, and the bending angle of the first part is greater than 90 degrees to form the back plate.

31. The method according to claim 30, wherein the fourth part is bent by a first bending assembly, the first bending assembly including a first fixing member, a first upper die punch and a first lower die punch; bending the fourth part towards the first surface of the main body by the first bending assembly includes: fixing the horizontally placed third part by the first fixing member; Taking the fourth axis as the bending axis, bend the fourth part towards the first surface of the main body through the first fixing member and the first upper die punch, and the bending angle of the fourth part is less than or equal to 90 degrees; Taking the fourth axis as the bending axis, bend the fourth part towards the first surface of the main body through the first fixing member and the first lower die punch, and the bending angle of the fourth part is less than or equal to 90 degrees.

32. The method according to claim 31, in the first bending assembly, the first fixing member is provided with a first fitting surface, the first fitting surface is inclined, the first lower die punch is provided with a second fitting surface, and the second fitting surface is parallel to the first fitting surface; the first upper die punch can move in the vertical direction, and the first lower die punch can move towards the first upper die punch in the vertical direction; the method further includes: After fixing the third part through the first fixing member, control the first upper die punch to move downward in the vertical direction to drive the fourth part to bend towards the first fitting surface, and the bending angle of the fourth part is equal to 90 degrees; Control the first lower die punch to move upward in the vertical direction, and the second fitting surface drives the fourth part to bend towards the first fitting surface, the first surface of the fourth part is in contact with the first fitting surface, and the second surface of the fourth part is in contact with the second fitting surface; or, the first upper die punch can move in the vertical direction, and the first lower die punch can move horizontally closer to or away from the first fixing member; The method further includes: After fixing the third part through the first fixing member, control the first upper die punch to move downward in the vertical direction to drive the fourth part to bend towards the first fitting surface, and the bending angle of the fourth part is equal to 90 degrees; Control the first lower die punch to move horizontally towards the first fixing member, and the second fitting surface drives the fourth part to bend towards the first fitting surface, the first surface of the fourth part is in contact with the first fitting surface, the fourth second surface is in contact with the second fitting surface.

33. The method according to claim 30, the second part and the third part are bent by a second bending assembly; the second bending assembly includes a second fixing member, a second upper die punch and a second lower die punch; bending the second part and the third part through the second bending assembly includes: Fix the horizontally placed first part through the second fixing member; Taking the second axis as the bending axis, bend the second part towards the first surface of the main body through the second fixing member and the second upper die punch, and the bending angle of the second part is less than 90 degrees; Taking the fourth axis as the bending axis, bend the fourth part towards the third part through the second upper die punch and the second lower die punch, and the fourth part is in contact with the third part.

34. According to the method described in claim 33, in the second bending assembly, the second upper die punch is movable in the vertical direction; the second upper die punch has a third fitting surface, and the third fitting surface is inclined; the second lower die punch is movable in the vertical direction towards the second upper die punch; The second lower die punch has a fourth fitting surface, and the fourth fitting surface is parallel to the third fitting surface; the method further includes: After fixing the first part through the second fixing member, control the second upper die punch to move downward in the vertical direction to drive the second part to bend downward, the second part is attached to the third attachment surface, and at least part of the fourth part is located above the fourth attachment surface; Control the second lower die punch to move upward in the vertical direction to drive the fourth part to bend upward, the first surface of the fourth part is attached to the third attachment surface, and the second surface of the fourth part is attached to the fourth attachment surface.

35. The method according to claim 30, wherein the first part, the second part and the third part are bent by a third bending assembly; the third bending assembly includes a third fixing member, a third upper die punch and a third lower die punch; Bending the first part, the second part and the third part by the third bending assembly includes: Fix the horizontally placed main body through the third fixing member; Taking the first axis as the bending axis, bend the first part towards the second surface of the main body through the third fixing member and the third upper die punch, and the bending angle of the first part is less than 90 degrees; Taking the second axis as the bending axis, bend the second part towards the first part through the third fixing member and the third lower die punch, and the second part is attached to the first part; taking the third axis as the bending axis, bend the third part towards the second part through the third fixing member and the third lower die punch.

36. The method according to claim 35, in the third bending assembly, the third fixing member is provided with a fifth attachment surface and a sixth attachment surface, the fifth attachment surface is inclined, the fifth attachment surface faces the third upper die punch, the sixth attachment surface is inclined, and the sixth attachment surface faces the third lower die punch; The third upper die punch is provided with a seventh attachment surface, and the seventh attachment surface is parallel to the fifth attachment surface; the third upper die punch can move towards the third fixing member in the vertical direction; The third lower die punch is provided with an eighth fitting surface and a ninth fitting surface, the eighth fitting surface is parallel to the fifth fitting surface, and the ninth fitting surface is parallel to the sixth fitting surface; The third lower die punch can move towards the third fixing member and the third upper die punch in the horizontal direction; the method further includes: After fixing the main body through the third fixing member, control the third upper die punch to move downward towards the third fixing member in the vertical direction to drive the first part to bend upward, the first surface of the first part is attached to the fifth attachment surface, and the second surface of the first part is attached to the seventh attachment surface; Control the third lower die punch to move towards the third fixing member and the third upper die punch in the horizontal direction; the ninth attachment surface drives the second part to be attached to the first part, and the ninth attachment surface is attached to the surface of the second part facing away from the first part; The eighth attachment surface drives the third part to bend towards the second part, the eighth attachment surface is attached to the surface of the third part facing away from the fourth part, and the sixth attachment surface is attached to the surface of the fourth part facing away from the third part.

37. The method according to claim 30, wherein the first part is bent by a fourth bending assembly, and the fourth bending assembly comprises a fourth fixing member and a fourth upper die punch; Bending the first part towards the first surface of the main body by the fourth bending assembly comprises: Fixing the horizontally placed main body by the fourth fixing member; Taking the first axis as the bending axis, and bending the first part towards the first surface of the main body by the fourth fixing member and the fourth upper die punch, wherein the bending angle of the first part is greater than or equal to 90 degrees.

38. The method according to claim 30, further comprising: Bending the fourth part towards the first surface of the main body, wherein the bending angle of the fourth part is greater than or equal to 100 degrees and less than or equal to 130 degrees; and / or, bending the second part towards the first surface of the main body, wherein the bending angle of the second part is greater than or equal to 45 degrees and less than or equal to 80 degrees; and / or, bending the first part towards the second surface of the main body, wherein the bending angle of the first part is greater than or equal to 5 degrees and less than or equal to 20 degrees; and / or, after providing the stamping raw material, the preparation method further comprises: Forming a first pre-pressing portion on the stamping raw material, the first pre-pressing portion corresponding to the second axis and being located on the first surface of the stamping raw material; and / or, forming a second pre-pressing portion on the stamping raw material, the second pre-pressing portion corresponding to the third axis and being located on the second surface of the stamping raw material; and / or, forming a third pre-pressing portion on the stamping raw material, the third pre-pressing portion corresponding to the fourth axis and being located on the first surface of the stamping raw material.

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