Display device

Abstract

The present disclosure relates to the technical field of display, and provides a display device. The display device comprises a display panel, a back plate, a lamp panel, a flexible circuit board, and a reflective sheet. In the thickness direction of the display device, a back plate first surface and a back plate third surface are arranged opposite to each other. A back plate second surface is connected to the back plate first surface and the back plate third surface. The back plate second surface has a back plate inclined section. The back plate inclined section has a back plate first end close to the back plate first surface and a back plate second end close to the back plate third surface, wherein the back plate second end is closer to the center of the lamp panel relative to the back plate first end. A flexible circuit board first end is connected to the lamp panel, a flexible circuit board middle section at least covers the lamp panel, and a flexible circuit board second end is connected to the back plate inclined section. Embodiments of the present disclosure can reduce the occurrence of bulging at the joint between the flexible circuit board and the back plate and at the joint between the flexible circuit board and the lamp panel, thereby improving the display effect of the display device.

Description

Display device

[0001] Cross-reference to related applications

[0002] The present disclosure claims priority to Chinese applications filed on September 29, 2024, with application number 202411377401.9; filed on September 29, 2024, with application number 202422392820.1; filed on September 29, 2024, with application number 202422392635.2; filed on September 29, 2024, with application number 202422392687.X, the contents of which are hereby incorporated by reference in their entirety in the present disclosure. TECHNICAL FIELD

[0003] Embodiments of the present disclosure relate to the technical field of display. In particular, it relates to a display device. BACKGROUND

[0004] A display device is an electronic device for presenting visual information, which can convert digital signals into visual images or text for users to watch and interact.

[0005] The current display device mainly includes a display panel and a backlight module. The backlight module includes a direct type backlight module. When the direct type backlight module is applied in a large size display screen or a video wall, multiple backlight modules are usually spliced together to form an overall display area. The direct type backlight module includes a back plate, a lamp plate, a flexible circuit board and a reflective sheet. The flexible circuit board is bent at the lamp plate to connect the binding area on the lamp plate and the connector located on the other side of the lamp plate, so as to reduce the seam of the direct type backlight module. However, the current display device has the problem of poor display effect. SUMMARY

[0006] In a first aspect, the embodiments of the present disclosure provide a display device, which can include: a display panel having a display side; a back plate arranged on a side of the display panel away from the display side, the back plate including: a through hole extending in a thickness direction of the display device; a back plate first surface facing the display panel; a lamp plate arranged on the back plate first surface; a back plate second surface having a back plate inclined section; the back plate inclined section being arranged at the through hole; a back plate third surface arranged opposite the back plate first surface in the thickness direction of the display device; wherein the back plate second surface connects the back plate first surface and the back plate third surface; the back plate inclined section including: a back plate first end arranged close to the back plate first surface in the thickness direction of the display device; a back plate second end arranged close to the back plate third surface in the thickness direction of the display device; the back plate second end being closer to a center of the lamp plate than the back plate first end in a direction perpendicular to the thickness direction of the back plate; the lamp plate, the lamp plate being provided with a lamp body on a side close to the display panel; a flexible circuit board including: a flexible circuit board first end connected with the lamp plate; a flexible circuit board second end connected with the back plate inclined section; a flexible circuit board middle section covering at least an end of the lamp plate close to the through hole; the flexible circuit board middle section connecting the flexible circuit board first end and the flexible circuit board second end; a reflective sheet arranged on a side of the lamp plate and the flexible circuit board facing the display panel, for reflecting light of the lamp body.

[0007] In a second aspect, the display device can include a display panel having a display side; a back plate disposed on a side of the display panel away from the display side; a lamp plate disposed between the back plate and the display panel and connected with the back plate; the lamp plate can include a lamp plate first side facing the display panel, the lamp plate first side being provided with a lamp body; a lamp plate second side having a lamp plate inclined section; a lamp plate third side connected with the back plate; the lamp plate first side and the lamp plate third side are oppositely disposed along a thickness direction of the lamp plate, and the lamp plate second side connects the lamp plate first side and the lamp plate third side; the lamp plate inclined section can include a lamp plate first end close to the lamp plate first side along the thickness direction of the lamp plate; a lamp plate second end close to the lamp plate third side along the thickness direction of the lamp plate; the lamp plate second end is away from the lamp body relative to the lamp plate first end along a direction perpendicular to the thickness direction of the lamp plate; a flexible circuit board connected with the lamp plate; the flexible circuit board can include a flexible circuit board first end connected with the lamp plate first side, a flexible circuit board second end connected with the lamp plate third side, and a flexible circuit board middle section covering at least the lamp plate inclined section and connecting the flexible circuit board first end and the flexible circuit board second end; a reflective sheet disposed on a side of the lamp plate and the flexible circuit board facing the display panel, and used for reflecting light of the lamp body.

[0008] In a third aspect, the display device can include a display panel having a display side; a back plate disposed on a side of the display panel away from the display side, the back plate being provided with a through hole; a lamp plate disposed between the back plate and the display panel and connected with the back plate; the lamp plate being provided with a lamp body; a flexible circuit board, the flexible circuit board can include a flexible circuit board first end connected with the lamp plate and having a first opening, a flexible circuit board second end disposed on a side of the lamp plate away from the display panel, and a flexible circuit board middle section covering at least an end of the lamp plate close to the through hole; the flexible circuit board middle section connecting the flexible circuit board first end and the flexible circuit board second end; a reflective sheet used for reflecting light of the lamp body; the reflective sheet being disposed on a side of the flexible circuit board facing the display panel and having a second opening; the second opening and the first opening being in communication; the lamp body passing through the first opening and the second opening and being connected with the lamp plate; along a thickness direction of the display device, a normal projection of a hole edge of the first opening on a plane where the reflective sheet is located is surrounded by an outer periphery of the second opening.

[0009] In a fourth aspect, the embodiments of the present disclosure provide a display device, which can include: a display panel having a display side; a back plate arranged on a side of the display panel away from the display side, the back plate being provided with a through hole; a lamp plate arranged between the back plate and the display panel and connected with the back plate, the lamp plate being provided with a lamp body; a flexible circuit board, the flexible circuit board including: a first end of the flexible circuit board arranged on a side of the lamp plate close to the display panel and connected with the lamp plate, the first end of the flexible circuit board being provided with a first opening; a second end of the flexible circuit board arranged on a side of the lamp plate away from the display panel; a middle section of the flexible circuit board covering at least an end of the lamp plate close to the through hole, the middle section of the flexible circuit board connecting the first end of the flexible circuit board and the second end of the flexible circuit board; a reflective sheet for reflecting light of the lamp body, the reflective sheet being arranged on a side of the flexible circuit board facing the display panel and provided with a second opening, the second opening and the first opening being in communication, the lamp body being connected with the lamp plate through the first opening and the second opening; and a first adhesive, part of the first adhesive being covered on the first end of the flexible circuit board, part of the first adhesive being filled into the first opening, and the first adhesive wrapping the flexible circuit board and the lamp plate.

[0010] In a fifth aspect, the embodiments of the present disclosure provide a display device, which can include: a display panel having a display side; a back plate arranged on a side of the display panel away from the display side, the back plate being provided with a through hole; a lamp plate arranged between the back plate and the display panel and connected with the back plate, the lamp plate being provided with a lamp body; the lamp plate including: a lamp plate body area; a binding area connected with the lamp plate body area, the binding area being arranged close to the through hole relative to the lamp plate body area along a direction perpendicular to a thickness direction of the display device; a flexible circuit board, the flexible circuit board including: a first end of the flexible circuit board arranged on the binding area and connected with the binding area, the first end of the flexible circuit board being provided with a first opening; a second end of the flexible circuit board arranged on a side of the lamp plate away from the display panel; a middle section of the flexible circuit board covering at least an end of the lamp plate close to the through hole, the middle section of the flexible circuit board connecting the first end of the flexible circuit board and the second end of the flexible circuit board; a reflective sheet for reflecting light of the lamp body, the reflective sheet being arranged on a side of the flexible circuit board facing the display panel and provided with a second opening; the first opening and the second opening being in communication, the lamp body being connected with the lamp plate through the first opening and the second opening; and a first adhesive, the first adhesive including: a first adhesive section, part of the first adhesive section being covered on the first end of the flexible circuit board; and a second adhesive section covering part of the lamp plate body area and connected with the first adhesive. BRIEF DESCRIPTION OF DRAWINGS

[0011] FIG. 1 is a structural schematic diagram of a display device according to some embodiments;

[0012] FIG. 2 is a structural schematic diagram of a first view angle of a backlight module of the display device according to some embodiments;

[0013] FIG. 3 is a structural schematic diagram of a second view angle of the backlight module of the display device according to some embodiments;

[0014] FIG. 4 is a structural schematic diagram of a first view angle of a backplane of the display device according to some embodiments;

[0015] FIG. 5 is a structural schematic diagram of a second view angle of the backplane of the display device according to some embodiments;

[0016] FIG. 6 is a structural schematic diagram of the backplane and a lamp plate of the display device according to some embodiments;

[0017] FIG. 7 is a structural schematic diagram of a third view angle of the backplane of the display device according to some embodiments;

[0018] FIG. 8 is a structural schematic diagram of a second view angle of the backplane of the display device according to some embodiments;

[0019] FIG. 9 is a structural schematic diagram of a third view angle of the backlight module of the display device according to some embodiments;

[0020] FIG. 10 is a structural schematic diagram of a fourth view angle of the backlight module of the display device according to some embodiments;

[0021] FIG. 11 is an enlarged view of a region A in FIG. 10 according to some embodiments;

[0022] FIG. 12 is a structural schematic diagram of the backplane of the display device according to some embodiments;

[0023] FIG. 13 is a structural schematic diagram of a second view angle of the backlight module of the display device according to some embodiments;

[0024] FIG. 14 is a structural schematic diagram of a third view angle of the backlight module of the display device according to some embodiments;

[0025] FIG. 15 is an enlarged view of a region B in FIG. 14 according to some embodiments;

[0026] FIG. 16 is a structural schematic diagram of a first view angle of the lamp plate of the display device according to some embodiments;

[0027] FIG. 17 is a structural schematic diagram of a second view angle of the lamp plate of the display device according to some embodiments;

[0028] FIG. 18 is a structural schematic diagram of a second view angle of the lamp plate of the display device according to some embodiments;

[0029] FIG. 19 is a structural schematic diagram of a lamp plate and a flexible circuit board of a display device according to some embodiments;

[0030] FIG. 20 is a structural schematic diagram of a third view of a backlight module of a display device according to some embodiments;

[0031] FIG. 21 is a structural schematic diagram of a third view of a backlight module of a display device according to some embodiments;

[0032] FIG. 22 is a structural schematic diagram of a lamp plate, a flexible circuit board and a reflective sheet of a display device according to some embodiments;

[0033] FIG. 23 is a structural schematic diagram of a lamp plate and a reflective sheet of a display device according to some embodiments;

[0034] FIG. 24 is a structural schematic diagram of a reflective sheet of a display device according to some embodiments;

[0035] FIG. 25 is a structural schematic diagram of a second view of a backlight module of a display device according to some embodiments;

[0036] FIG. 26 is a structural schematic diagram of a second view of a backlight module of a display device according to some embodiments;

[0037] FIG. 27 is a structural schematic diagram of a lamp plate, a flexible circuit board and a first adhesive according to some embodiments;

[0038] FIG. 28 is a structural schematic diagram of a lamp plate, a flexible circuit board and a first adhesive according to some embodiments;

[0039] FIG. 29 is a structural schematic diagram of a back plate assembly of a display device according to some embodiments;

[0040] FIG. 30 is a structural schematic diagram of a back plate assembly of a display device according to some embodiments;

[0041] FIG. 31 is a structural schematic diagram of a back plate assembly of a display device according to some embodiments;

[0042] FIG. 32 is a structural schematic diagram of a C area in FIG. 31 according to some embodiments. DETAILED DESCRIPTION

[0043] A display device is an electronic device for presenting visual information, which can convert digital signals into visual images or text for users to watch and interact.

[0044] The current display device mainly comprises a display panel and a backlight module. The backlight module comprises a direct type backlight module. When the direct type backlight module is applied in a large size display screen or a video wall, a plurality of backlight modules are usually spliced together to form an integral display area. The direct type backlight module comprises a back plate, a lamp plate, a flexible circuit board and a reflective sheet. The lamp plate is provided with light sources, such as LED light sources, which are distributed on the lamp plate and used to provide light for the display panel. The flexible circuit board is bent at the lamp plate to connect the binding area on the lamp plate and the connector located on the other side of the lamp plate, so as to reduce the splicing seam of the direct type backlight module.

[0045] However, when the flexible circuit board is bent at the lamp plate, mechanical stress is generated inside the flexible circuit board, which causes the bulging at the connection between the flexible circuit board and the lamp plate, and the bulging hinders the normal propagation of light on the lamp plate. In addition, due to the difference in reflectivity between the reflective sheet and the flexible circuit board, there is a problem of poor brightness uniformity in the binding area of the flexible circuit board and the lamp plate in the display device. In addition, the pads on the flexible circuit board and the pads on the lamp plate are connected by conductive adhesive, and during the use of the display device, heat may be generated at the connection between the lamp plate and the circuit board pads, and the conductive adhesive may age, reducing the connection strength between the lamp plate and the flexible circuit board. In addition, there is a problem of unstable optical distance in the display device. Therefore, the current display device has the problem of poor display effect.

[0046] Therefore, the display device provided in the embodiments of the present disclosure comprises a display panel, a back plate, a lamp plate, a flexible circuit board and a reflective sheet. By arranging the back plate inclined section on the back plate, when the flexible circuit board is bent, the first end of the flexible circuit board is connected with the lamp plate, the second end of the flexible circuit board is connected with the back plate inclined section, and the middle section of the flexible circuit board covers at least the end of the lamp plate close to the through hole. The back plate inclined section provides a smooth transition path for the bending of the flexible circuit board, reduces the bending angle of the flexible circuit board, avoids the sharp bending of the flexible circuit board during the connection process, reduces the mechanical stress generated by the bending of the flexible circuit board, and increases the connection area between the flexible circuit board and the back plate. In addition, the bulging problem at the connection between the flexible circuit board and the back plate and the connection between the flexible circuit board and the lamp plate is avoided, and the problem of affecting the light propagation uniformity of the lamp body caused by the bulging problem is also avoided.

[0047] In the embodiments of the present disclosure, by arranging the lamp plate inclined section on the lamp plate, the lamp plate inclined section provides a smooth transition path for the bending of the flexible circuit board, increases the bending angle at the connection between the first surface of the lamp plate and the lamp plate inclined section, and further reduces the bending angle of the flexible circuit board, avoids the sharp bending of the flexible circuit board during the connection process, reduces the mechanical stress generated by the bending of the flexible circuit board, and avoids the bulging problem at the connection between the flexible circuit board and the lamp plate.

[0048] In the embodiments of the present disclosure, along the thickness direction of the display device, the projection of the hole edge of the first opening on the surface where the reflective sheet is located is surrounded by the outer periphery of the second opening, so that the aperture of the second opening on the reflective sheet is not greater than the aperture size of the first opening of the flexible circuit board. The reflective sheet covers the hole edge of the first opening of the flexible circuit board, avoiding the reflection of light by the flexible circuit board, and the light emitted by the lamp panel is smoothly reflected by the reflective sheet to maximize the reflection and utilization of light, improve the propagation uniformity of light, and improve the brightness uniformity of the display device.

[0049] In the embodiments of the present disclosure, by setting the first adhesive and covering part of the first adhesive on the first end of the flexible circuit board, and filling part of the first adhesive into the first opening, the mechanical connection strength between the flexible circuit board and the lamp panel can be significantly enhanced. This design effectively reduces the risk of separation of the flexible circuit board and the lamp panel due to long-term use, and improves the connection stability of the lamp panel and the flexible circuit board. The use of the first adhesive not only enhances the connection strength of the lamp panel and the flexible circuit board, but also provides external protection for the lamp panel and the flexible circuit board, preventing environmental factors such as humidity, dust, etc. from eroding the connection part of the lamp panel and the flexible circuit board, thereby improving the reliability and service life of the flexible circuit board and the lamp panel, and improving the use performance of the display device.

[0050] In the embodiments of the present disclosure, by designing the mounting surface of the back plate assembly to be inclined towards the side away from the back plate cavity, the diffusion plate is pre-deformed during installation to avoid deformation of the diffusion plate in the direction of the display panel under external force during use. This design ensures that the diffusion plate will not be unnecessarily bent or deformed when subjected to external force, thereby maintaining the stability of its optical performance. It improves the stability of the optical distance in the display device, and further improves the display effect of the display device.

[0051] The embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all. The present disclosure provides a display device, and the display device provided by the present disclosure can have various implementation forms, such as a smart television, a laser projection device, a monitor, an electronic bulletin board, an electronic table, etc.

[0052] FIG. 1 is a structural schematic diagram of a display device; FIG. 2 is a structural schematic diagram of a first viewing angle of a backlight module of the display device; FIG. 3 is a structural schematic diagram of a second viewing angle of the backlight module of the display device; Referring to FIGS. 1-3, the display device provided by the embodiments of the present disclosure can include a display panel 100, a back plate 200, a lamp plate 300, a flexible circuit board 400, a reflective sheet 500, and a diffusion plate 600. Along the thickness direction of the display device, the back plate 200, the lamp plate 300, the reflective sheet 500, the diffusion plate 600, and the display panel 100 are sequentially arranged. The display panel 100 has a display side. The display panel 100 of the display device faces the user. The display panel 100 is the main interface for the user to view. The display panel 100 is used to display images or videos.

[0053] The back plate 200 is arranged on the side of the display panel 100 away from the display side. The back plate 200 is provided with a through hole 200a. The back plate 200 is used to provide structural support for the display device. By arranging the back plate 200, the mechanical strength of the entire display device is increased, preventing the display device from being damaged during installation and use.

[0054] The lamp plate 300 is used to support and fix the lamp body 340, ensuring that the position and angle of the lamp body 340 are appropriate so as to provide uniform backlight for the display panel 100. The lamp body 340 is used to provide a backlight source to illuminate the display panel 100.

[0055] The size of a single lamp plate 300 is limited and cannot cover a large-size display panel 100. In the display device provided by the embodiments of the present disclosure, multiple lamp plates 300 are spliced to achieve a larger display area, meeting the needs of large-size display devices. In order to achieve smooth splicing of the lamp plate 300, a flexible circuit board 400 is arranged at the edge of the lamp plate 300. The first end of the flexible circuit board 400 is connected to the lamp plate 300. The second end of the flexible circuit board 400 is connected to the connector 700. The middle section of the flexible circuit board 400 covers at least the end of the lamp plate 300 close to the through hole 200a. In this way, the flexible circuit board 400 is bent at the edge of the lamp plate 300 to achieve the connection between the lamp body 340 on the lamp plate 300 and the connector 700 on one side of the lamp plate 300. In this way, the lamp body 340 on the lamp plate 300 obtains external power supply and signal transmission through the connector 700.

[0056] At the same time, since the flexible circuit board 400 can be bent and adjusted in position, it can closely connect adjacent lamp plates 300, reduce physical gaps, and reduce the seams between the lamp plates 300, thereby achieving a more compact splicing effect. This not only improves the overall aesthetics of the lamp plate 300, but also reduces light leakage and unevenness.

[0057] The reflective sheet 500 is arranged on the side of the lamp panel 300 and the flexible circuit board 400 facing the display panel 100. The reflective sheet 500 is used for reflecting light. The reflective sheet 500 reflects the light emitted by the lamp body 340 (light source) back to the display panel 100, thereby increasing the brightness and light efficiency.

[0058] The diffusion plate 600 is arranged between the display panel 100 and the lamp panel 300. The diffusion plate 600 is used to uniformly disperse the light from the lamp body 340, thereby avoiding bright spots or dark spots.

[0059] In order to realize the arrangement of multiple lamp panels 300 on the back plate 200, the number of through holes 200a on the back plate 200 is multiple.

[0060] In some embodiments, referring to FIG. 4, the number of through holes 200a is multiple, and the multiple through holes 200a are arranged in sequence along a first direction. The first direction refers to the direction indicated by X in FIG. 4. The first direction is perpendicular to the thickness direction of the display device.

[0061] Along a second direction, the back plate 200 has a back plate center line 200d. The second direction refers to the direction indicated by Y in FIG. 4. The through hole 200a is arranged at the back plate center line 200d.

[0062] Referring to FIG. 1, by arranging multiple through holes 200a along the first direction and arranging the through hole 200a at the back plate center line 200d, the stress is uniformly dispersed, and the stress is not concentrated in a certain position, thereby improving the overall structural stability of the back plate 200 and improving the symmetry and balance of the back plate 200. At the same time, the multiple through holes 200a can effectively disperse and exhaust the heat inside the back plate 200, prevent overheating, and improve the heat dissipation performance of the display device.

[0063] In some embodiments, the first direction can be the length direction of the back plate 200. The second direction can be the width direction of the back plate 200.

[0064] In some embodiments, the first direction can be the width direction of the back plate 200. The second direction can be the length direction of the back plate 200.

[0065] In some embodiments, referring to FIG. 5, the through hole 200a includes a first through hole 200b and a second through hole 200c which are not connected to each other. The number of first through holes 200b is multiple, and the number of second through holes 200c is multiple. The multiple first through holes 200b are arranged one by one and correspond to the multiple second through holes 200c.

[0066] In the second direction, the first through holes 200b are arranged on the first side of the extension direction of the back plate center line 200d. The second through holes 200c are arranged on the second side opposite to the first side of the extension direction of the back plate center line 200d. The plurality of first through holes 200b and the plurality of second through holes 200c are arranged one by one. The distance between the corresponding first through hole 200b and the second through hole 200c is equal. In this way, the first through hole 200b and the second through hole 200c are arranged on both sides of the extension direction of the back plate center line 200d, forming a symmetrical distribution. This design can uniformly disperse stress and avoid stress concentration in a certain position, thereby improving the overall structural stability of the back plate 200. At the same time, the first through hole 200b and the second through hole 200c are used for the flexible circuit board 400 to pass through, improving the neatness and reliability of the back plate 200.

[0067] In some embodiments, referring to FIG. 6, the lamp plate 300 includes a first lamp plate 350 and a second lamp plate 360. The number of the first lamp plate 350 is a plurality. The number of the second lamp plate 360 is a plurality.

[0068] In the second direction, the plurality of first lamp plates 350 are arranged on the first side of the extension direction of the back plate center line 200d. The plurality of second lamp plates 360 are arranged on the second side opposite to the first side of the back plate center line 200d. The plurality of first lamp plates 350, the plurality of through holes 200a, and the plurality of second lamp plates 360 are arranged correspondingly.

[0069] It can be understood that each first lamp plate 350 is correspondingly provided with a flexible circuit board 400. Each second lamp plate 360 is correspondingly provided with a flexible circuit board 400.

[0070] In the second direction, the first lamp plate 350 is arranged close to the first side of the extension direction of the back plate center line 200d. The plurality of first lamp plates 350 and the plurality of through holes 200a are arranged one by one. The first end of the flexible circuit board is connected with the binding area 311 of the first lamp plate 350. At least part of the middle section of the flexible circuit board covers the end of the lamp plate 300 close to the through hole 200a. The second end of the flexible circuit board is connected with the connector 700. In this way, the connector 700 inputs external power and signal to the lamp plate 300, and the lamp body 340 on the lamp plate 300 emits light. By arranging the first lamp plate 350 and the through hole 200a one by one, and connecting the first lamp plate 350 to the connector 700 through the flexible circuit board 400, the independent control of each first lamp plate 350 is realized. Each connector 700 can independently transmit power and signal to the corresponding first lamp plate 350, so that each first lamp plate 350 can work independently, meeting different display effects.

[0071] In the second direction, the second lamp plate 360 is arranged close to the second side opposite to the first side of the center line 200d of the back plate. The plurality of second lamp plates 360 and the plurality of through holes 200a are arranged one by one. The first end of the flexible circuit board is connected to the binding area 311 of the second lamp plate 360. At least part of the middle section of the flexible circuit board covers the end of the lamp plate 300 close to the through hole 200a. The second end of the flexible circuit board is connected to the connector 700. In this way, the connector 700 inputs power and signals from the outside to the lamp plate 300, and the lamp body 340 on the lamp plate 300 emits light. By arranging the second lamp plate 360 and the through hole 200a one by one and connecting the second lamp plate 360 to the connector 700 through the flexible circuit board 400, the independent control of each second lamp plate 360 is realized. Each connector 700 can independently transmit power and signals to the corresponding second lamp plate 360, so that each second lamp plate 360 can work independently to meet different display effects.

[0072] In some embodiments, the distance between adjacent first lamp plates 350 is equal. The distance between adjacent second lamp plates 360 is equal. The distance between the corresponding first lamp plate 350 and the second lamp plate 360 is equal. The uniform spacing arrangement helps to realize the uniform arrangement of the lamp plate 300 and ensures the consistency of the display effect.

[0073] When the flexible circuit board 400 is used to bend around the lamp plate 300, the flexible circuit board 400 will deform under its own stress. At this time, a bulge will be generated between the flexible circuit board 400 and the lamp plate 300, which will affect the light emission of the lamp body 340 on the lamp plate 300 and the display effect of the display device. To solve the problem of bulging, the present disclosure provides the following embodiments.

[0074] In some embodiments, as shown in FIGS. 7-9, the back plate 200 has a back plate first surface 210, a back plate second surface 220, and a back plate third surface 230 connected in sequence. In the thickness direction of the display device, the back plate first surface 210 and the back plate third surface 230 are arranged opposite to each other. The back plate second surface 220 connects the back plate first surface 210 and the back plate third surface 230. The back plate second surface 220 has a back plate inclined section 221. The back plate inclined section 221 is arranged at the through hole 200a.

[0075] The lamp plate 300 is arranged on the back plate first surface 210. The back plate inclined section 221 includes a back plate first end arranged close to the back plate first surface 210 and a back plate second end arranged close to the back plate third surface 230. In the direction perpendicular to the thickness direction of the back plate 200, the back plate second end is closer to the center of the lamp plate 300 than the back plate first end;

[0076] In the direction from the back plate first end to the back plate second end, the distance between the back plate inclined section 221 and the display panel 100 gradually increases. That is, the angle between the direction from the back plate first end to the back plate second end and the back plate first surface 210 is an acute angle.

[0077] The flexible circuit board 400 comprises a flexible circuit board first end, a flexible circuit board middle section and a flexible circuit board second end connected in sequence.

[0078] The flexible circuit board first end is connected with the lamp plate 300. The flexible circuit board second end is connected with the back plate inclined section 221, and the flexible circuit board second end is connected with the connector 700. The flexible circuit board middle section covers at least an end of the lamp plate 300 close to the through hole 200a.

[0079] The lamp plate 300 is arranged on the back plate first surface 210. The lamp plate 300 is connected with the back plate first surface 210. The connector 700 is arranged on the back plate inclined section 221.

[0080] The display device provided by the embodiment of the present disclosure sets the back plate inclined section 221 on the back plate 200. When the flexible circuit board 400 is bent, the flexible circuit board first end is connected with the lamp plate 300, the flexible circuit board second end is connected with the back plate inclined section 221, and the flexible circuit board middle section covers at least an end of the lamp plate 300 close to the through hole 200a. The back plate inclined section 221 provides a smooth transition path for the bending of the flexible circuit board 400, reduces the bending angle of the flexible circuit board 400, avoids sharp bending of the flexible circuit board 400 during connection, reduces the mechanical stress generated by the bending of the flexible circuit board 400, and increases the connection area of the flexible circuit board 400 and the back plate 200. In addition, the setting of the back plate inclined section 221 avoids the bulging problem at the connection between the flexible circuit board 400 and the back plate 200 and the connection between the flexible circuit board 400 and the lamp plate 300, thereby avoiding the problem that the bulging problem affects the uniformity of light propagation of the lamp body 340.

[0081] In some embodiments, as shown in FIGS. 7-11, along a first direction, the back plate inclined section 221 is arranged at a middle section of the back plate second surface 220. The first direction is perpendicular to the thickness direction of the display device.

[0082] The surface of the back plate inclined section 221 facing the through hole 200a forms part of the inner wall of the through hole 200a.

[0083] In some embodiments, the number of through holes 200a on the back plate 200 is one. The back plate second surface 220 comprises a back plate vertical section and the back plate inclined section 221. Along a first direction, two back plate vertical sections are arranged at opposite ends of the back plate inclined section 221, and the first direction is shown by X in FIG. 7. By arranging the back plate inclined section 221 at the middle section of the back plate second surface 220, a step is formed between the back plate inclined section 221 and the back plate vertical section. The step limits the movement of the flexible circuit board 400, avoids poor contact or open circuit caused by the movement of the flexible circuit board 400, and improves the connection stability of the flexible circuit board 400.

[0084] In some embodiments, referring to FIG. 12, the backboard inclined section 221 is in a stepped shape. The backboard inclined section 221 includes a first inclined section 222, a second inclined section 223 and a third inclined section 224 connected in sequence. The first inclined section 222 is connected with the first surface 210 of the backboard. The third inclined section 224 is connected with the third surface 230 of the backboard. The second inclined section 223 is connected with the first inclined section 222 and the third inclined section 224.

[0085] In the thickness direction of the display device, the first inclined section 222 includes a first inclined end disposed close to the first surface 210 of the backboard and a second inclined end disposed close to the third surface 230 of the backboard. In the direction perpendicular to the thickness direction of the display device, the second inclined end is disposed close to the center of the lamp panel 300 relative to the first inclined end.

[0086] From the first inclined end to the second inclined end, the distance between the first inclined section 222 and the display panel 100 gradually increases.

[0087] The extension direction of the first inclined section 222 is parallel to the extension direction of the third inclined section 224. The extension direction of the second inclined section 223 intersects with the extension direction of the first inclined section 222 and the third inclined section 224.

[0088] The display device provided by the embodiments of the present disclosure provides more mounting and fixing points for the installation of the flexible circuit board 400 by arranging the first inclined section 222, the second inclined section 223 and the third inclined section 224 connected in sequence, effectively increases the contact area between the flexible circuit board 400 and the backboard inclined section 221, facilitates the installation of the flexible circuit board 400, and improves the stability and reliability of the installation of the flexible circuit board 400. FIG. 12 shows a structure schematic diagram when the backboard inclined section 221 has one step.

[0089] It can be understood that a plurality of inclined sections can be arranged on the backboard inclined section 221.

[0090] In some embodiments, the surface of the backboard inclined section 221 is uneven.

[0091] In some embodiments, the surface of the backboard inclined section 221 is a rough surface. The rough surface includes tiny protrusions and recesses. In this way, the flexible circuit board 400 can be deformed at the protrusions and recesses. The protrusions and recesses can increase the contact area between the flexible circuit board 400 and the backboard inclined section 221, increase the friction between the flexible circuit board 400 and the backboard inclined section 221, prevent the flexible circuit board 400 from sliding or shifting during use, and further improve the connection stability between the flexible circuit board 400 and the backboard inclined section 221, change the stress of the flexible circuit board 400, and avoid the problem of bulging between the flexible circuit board 400 and the backboard 200 and between the flexible circuit board 400 and the lamp panel 300.

[0092] Referring to FIGS. 13-15, the lamp plate 300 has a lamp plate first face 310, a lamp plate second face 320, and a lamp plate third face 330 connected in sequence. The lamp plate first face 310 and the lamp plate third face 330 are oppositely arranged along the thickness direction of the display device.

[0093] The lamp plate first face 310 faces the display panel 100. The lamp plate first face 310 is provided with a lamp body 340. The lamp plate second face 320 connects the lamp plate first face 310 and the lamp plate third face 330. The lamp plate third face 330 is connected with the back plate first face 210.

[0094] In some embodiments, the angle between the direction from the back plate first end to the back plate second end and the lamp plate second face 320 is greater than 110° and less than 130°.

[0095] When the angle between the direction from the back plate first end to the back plate second end and the lamp plate second face 320 is less than 110°, the bending angle of the flexible circuit board 400 is still too large, which cannot effectively relieve the mechanical stress at the bending position, which will cause stress concentration and increase the risk of fracture or damage of the flexible circuit board 400. At the same time, the small angle cannot effectively increase the contact area between the flexible circuit board 400 and the lamp plate inclined section 321, resulting in reduced connection stability. Insufficient contact area will affect the fixation and stability of the circuit board, increasing the installation difficulty and uncertainty. In addition, based on the angle between the lamp plate second face 320 and the lamp plate third face 330 being 90°, in order to realize the angle between the back plate inclined section 221 and the lamp plate second face 320 being less than 110°, the angle between the back plate first face 210 and the back plate inclined section 221 must be less than 20°. This design will increase the manufacturing difficulty and complexity of the back plate 200, which is not conducive to mass production and quality control.

[0096] When the angle between the direction from the back plate first end to the back plate second end and the lamp plate second face 320 is greater than 130°, the contact area between the flexible circuit board 400 and the lamp plate inclined section 321 is reduced, resulting in reduced connection stability. Insufficient contact area will affect the fixation and stability of the circuit board, increasing the installation difficulty and uncertainty.

[0097] Therefore, the embodiments of the present disclosure set the angle between the direction from the back plate first end to the back plate second end and the lamp plate second face 320 to be greater than 110° and less than or equal to 130°, so as to effectively disperse the bending stress of the flexible circuit board 400, reduce stress concentration, and avoid the bulging phenomenon. At the same time, the contact area between the flexible circuit board 400 and the back plate 200 is ensured.

[0098] In some embodiments, an angle between a direction from the first end of the back plate to the second end of the back plate and the second surface of the lamp plate 320 can be 115°, 120°, or 125°. The lamp plate 300 is arranged between the back plate 200 and the display panel 100. The lamp plate 300 is connected to the back plate 200. The lamp body 340 can be an LED lamp.

[0099] Referring to FIGS. 13-15, the second surface of the lamp plate 320 has a lamp plate inclined section 321. In a thickness direction of the lamp plate 300, the lamp plate inclined section 321 includes a first end close to the first surface of the lamp plate 310 and a second end close to the third surface of the lamp plate 330. In a direction perpendicular to the thickness direction of the lamp plate 300, the second end is away from the lamp body 340 relative to the first end. In a direction from the first end to the second end, a distance between the lamp plate inclined section 321 and the display panel 100 gradually increases. That is, an angle between the direction from the first end to the second end and an extension direction of the first surface of the lamp plate 310 is an obtuse angle.

[0100] The flexible circuit board 400 is bent at an edge of the lamp plate 300. The flexible circuit board includes a first end, a middle section, and a second end connected in sequence. The first end of the flexible circuit board is connected to the first surface of the lamp plate 310. The second end of the flexible circuit board is connected to the third surface of the lamp plate 330, and the second end of the flexible circuit board is connected to the connector 700. The middle section of the flexible circuit board covers at least the lamp plate inclined section 321. In this way, the lamp body 340 on the lamp plate 300 obtains external power supply and signal transmission through the connector 700.

[0101] The display device provided by the embodiments of the present disclosure provides a smooth transition path for the bending of the flexible circuit board 400 by arranging the lamp plate inclined section 321 on the lamp plate 300. The first end of the flexible circuit board is connected to the first surface of the lamp plate 310, the second end of the flexible circuit board is connected to the third surface of the lamp plate 330, and the middle section of the flexible circuit board covers at least the lamp plate inclined section 321. The bending angle at the connection between the first surface of the lamp plate 310 and the lamp plate inclined section 321 is increased, thereby reducing the bending angle of the flexible circuit board 400, avoiding sharp bending of the flexible circuit board 400 during connection, reducing mechanical stress generated by the bending of the flexible circuit board 400, avoiding the problem of bulging at the connection between the flexible circuit board 400 and the lamp plate 300, and thereby avoiding the problem of the uniformity of light propagation of the lamp body 340 affected by the bulging problem. At the same time, the arrangement of the lamp plate inclined section 321 increases the connection area of the flexible circuit board 400 and the lamp plate 300, and improves the connection stability of the flexible circuit board 400 and the lamp plate 300.

[0102] In some embodiments, the lamp plate 300 includes a first lamp plate 350 and a second lamp plate 360. The number of the first lamp plate 350 is a plurality, and the number of the second lamp plate 360 is a plurality.

[0103] In the second direction, the plurality of first lamp panels 350 are arranged on the first side of the extension direction of the back plate center line 200d. The plurality of second lamp panels 360 are arranged on the second side opposite to the first side of the extension direction of the back plate center line 200d.

[0104] The plurality of first lamp panels 350 and the plurality of first through holes 200b are arranged one-to-one. The plurality of second lamp panels 360 and the plurality of second through holes 200c are arranged one-to-one.

[0105] It can be understood that each first lamp panel 350 is correspondingly arranged with a flexible circuit board 400. Each second lamp panel 360 is correspondingly arranged with a flexible circuit board 400.

[0106] In some embodiments, the flexible circuit board first end and the first lamp panel 350 are connected, at least part of the flexible circuit board middle section covers the lamp panel inclined section 321, the flexible circuit board second end and the lamp panel third surface 330 are connected, and the flexible circuit board second end and the connector 700 located in the first through hole 200b are connected. In this way, the connector 700 inputs external power and signals to the lamp panel 300, and the lamp body 340 on the lamp panel 300 emits light. By arranging the first lamp panel 350 and the first through hole 200b one-to-one, and connecting the first lamp panel 350 to the connector 700 through the flexible circuit board 400, the independent control of each first lamp panel 350 is realized. Each connector 700 can independently transmit power and signals to the corresponding first lamp panel 350, so that each first lamp panel 350 can work independently to meet different display effects.

[0107] Among them, in the thickness direction of the display device, the lamp panel first end of the lamp panel inclined section 321 on the first lamp panel 350 extends towards the lamp body 340 on the first lamp panel 350 relative to the lamp panel second end of the lamp panel inclined section 321 on the first lamp panel 350.

[0108] The flexible circuit board first end and the second lamp panel 360 are connected, at least part of the flexible circuit board middle section covers the lamp panel inclined section 321, the flexible circuit board second end and the lamp panel third surface 330 are connected, and the flexible circuit board second end and the connector 700 located in the second through hole 200c are connected. In this way, the connector 700 inputs external power and signals to the lamp panel 300, and the lamp body 340 on the lamp panel 300 emits light. By arranging the second lamp panel 360 and the second through hole 200c one-to-one, and connecting the second lamp panel 360 to the connector 700 through the flexible circuit board 400, the independent control of each second lamp panel 360 is realized. Each connector 700 can independently transmit power and signals to the corresponding second lamp panel 360, so that each second lamp panel 360 can work independently to meet different display effects.

[0109] The lamp plate first end of the lamp plate inclined segment 321 on the second lamp plate 360 extends towards the lamp body 340 on the second lamp plate 360 relative to the lamp plate second end of the lamp plate inclined segment 321 on the second lamp plate 360 along the thickness direction of the display device.

[0110] In some embodiments, the number of the first lamp plates 350 can be four. The number of the first through holes 200b can be four. The number of the second lamp plates 360 can be four. The number of the second through holes 200c can be four. The lamp plate inclined segment 321 is arranged at the middle segment of the lamp plate second face 320 along the first direction. The first direction is perpendicular to the thickness direction of the display device.

[0111] Referring to FIGS. 15-19, the binding area 311 of the lamp plate 300 is located between the edge lamp body and the sub-edge lamp body on the lamp plate 300. The edge lamp body refers to the lamp body 340 closest to the lamp plate second face 320 on the lamp plate 300. The sub-edge lamp body refers to the lamp body 340 closest to the lamp plate second face 320 on the lamp plate 300 except the edge lamp body 340 on the lamp plate 300.

[0112] Referring to FIGS. 15-16, the binding area 311 is located on the first face of the lamp plate 300. The binding area 311 is arranged near the middle segment of the lamp plate first face 310 along the first direction, so that the electrical connection points are concentrated and managed, facilitating manufacturing and maintenance. The first direction is shown by X in FIG. 16. The first end of the flexible circuit board is bound to the lamp plate first face 310 at the binding area 311. The second end of the flexible circuit board is connected to the lamp plate third face 330, and the second end of the flexible circuit board is connected to the connector 700. The middle segment of the flexible circuit board covers at least the lamp plate inclined segment 321. In this way, the lamp plate first face 310 and the lamp plate inclined segment 321 provide a smooth path for the flexible circuit board 400. Compared with the conventional display device in which part of the flexible circuit board 400 is bent at an angle of 90° between the lamp plate first face 310 and the lamp plate second face 320, the bending angle between the lamp plate first face 310 and the lamp plate inclined segment 321 in the embodiment of the present disclosure is an obtuse angle, which reduces the bending angle of the flexible circuit board 400, reduces the mechanical stress generated by the flexible circuit board 400, improves the connection stability of the flexible circuit board 400 and the lamp plate 300, avoids the problem of bulging at the connection between the flexible circuit board 400 and the lamp plate 300, and further avoids the problem of affecting the uniformity of light propagation of the lamp body 340 caused by the bulging problem.

[0113] The second surface 320 of the lamp plate comprises a lamp plate vertical section 322 and a lamp plate inclined section 321. In the first direction, two lamp plate vertical sections 322 are arranged at opposite ends of the lamp plate inclined section 321, so that the lamp plate inclined section 321 corresponds to the binding area 311 in position, the lamp plate inclined section 321 is arranged at the middle section of the second surface 320 of the lamp plate extending in the first direction, and the binding area 311 is arranged at the middle section of the first surface 310 of the lamp plate in the first direction. The binding area 311 and the lamp plate inclined section 321 are concentratedly arranged in the middle section, which helps to optimize the space utilization of the lamp plate 300.

[0114] When the lamp plate inclined section 321 is arranged between the two lamp plate vertical sections 322, a step is formed between the lamp plate inclined section 321 and the lamp plate vertical section 322. The step serves as a limiting position for the flexible circuit board 400, avoiding movement of the flexible circuit board 400 and contact failure or disconnection caused by movement of the flexible circuit board 400, thereby improving the connection stability of the flexible circuit board 400.

[0115] It can be understood that the second surface 320 of the lamp plate can be a lamp plate inclined section 321, so as to simplify the manufacturing process, reduce the production steps, and thereby improve the production efficiency.

[0116] In some embodiments, a chamfer structure 800 is arranged at the connection between the lamp plate inclined section 321 and the first surface 310 of the lamp plate.

[0117] Referring to FIG. 15, a chamfer structure 800 is arranged at the connection between the lamp plate inclined section 321 and the third surface 330 of the lamp plate. A chamfer structure 800 is arranged at the connection between the lamp plate inclined section 321 and the first surface 310 of the lamp plate. The chamfer structure 800 provides a smooth transition area for the flexible circuit board 400 bent at the lamp plate inclined section 321, avoiding sharp bending of the flexible circuit board 400 at the connection between the lamp plate inclined section 321 and the first surface 310 of the lamp plate. Thus, the chamfer structure 800 makes the connection between the lamp plate inclined section 321 and the first surface 310 of the lamp plate more smooth, avoids the occurrence of a bulge at the connection, and thereby maintains uniform propagation of light of the lamp body 340, ensuring the visual effect and performance of the display panel 100. At the same time, the chamfer structure 800 can effectively disperse stress, avoiding stress concentration of the flexible circuit board 400 at a certain point, thereby improving the durability and reliability of the flexible circuit board 400.

[0118] In some embodiments, the corner structure 800 is provided at the junction between the inclined section 321 and the first surface 310 of the lamp panel. The corner structure 800 is provided at the junction between the inclined section 321 and the third surface 330 of the lamp panel. The corner structure 800 provides a smooth transition area for the flexible circuit board 400 bending at the inclined section 321, reducing the sharp bending of the flexible circuit board 400 at the junction between the inclined section 321 and the first surface 310 or the third surface 330 of the lamp panel. Thus, the corner structure 800 makes the junction between the inclined section 321 and the first surface 310 or the third surface 330 of the lamp panel smoother, avoiding stress concentration of the flexible circuit board 400 at a certain point, thereby improving the durability and reliability of the flexible circuit board 400.

[0119] In some embodiments, the corner structure 800 is provided at the junction between the inclined section 321 and the first surface 310 of the lamp panel. The corner structure 800 is provided at the junction between the inclined section 321 and the third surface 330 of the lamp panel. The corner structure 800 provides a smooth transition area for the flexible circuit board 400 bending at the inclined section 321, reducing the sharp bending of the flexible circuit board 400 at the junction between the inclined section 321 and the first surface 310 or the third surface 330 of the lamp panel. Thus, the corner structure 800 makes the junction between the inclined section 321 and the first surface 310 or the third surface 330 of the lamp panel smoother, avoiding stress concentration of the flexible circuit board 400 at a certain point, thereby improving the durability and reliability of the flexible circuit board 400.

[0120] In some embodiments, when the corner structure 800 is a rounded corner, the radius of the corner structure 800 is greater than 0.15 mm and less than 0.25 mm, so as to effectively disperse stress and make the flexible circuit board 400 transition smoothly.

[0121] When the radius of the corner structure 800 is greater than 0.25 mm, the radius of the corner structure 800 is too large. The corner structure with a size that is too large can reduce the effective cross-sectional area of the lamp panel 300 and reduce the strength of the lamp panel 300. In addition, the corner structure 800 with a size that is too large can increase the complexity and difficulty of the manufacturing process, requiring more precise processing equipment and technology, resulting in an increase in manufacturing costs.

[0122] When the radius of the corner structure 800 is less than 0.15 mm, the radius of the corner structure 800 is too small. The corner structure 800 with a size that is too small cannot effectively disperse stress, which can cause stress to concentrate in certain areas, increasing the risk of damage to the flexible circuit board 400 and the lamp panel 300. At the same time, the corner structure 800 with a size that is too small cannot provide sufficient smooth transition, and the flexible circuit board 400 can still bear a large mechanical stress at the bending position, increasing the possibility of damage.

[0123] Therefore, in the embodiments of the present disclosure, the radius of the corner structure 800 is greater than 0.15 mm and less than 0.25 mm, so as to effectively disperse stress and make the flexible circuit board 400 transition smoothly.

[0124] In some embodiments, the radius of the corner structure 800 is 0.2 mm.

[0125] In some embodiments, the surface of the inclined section 321 of the lamp panel is uneven.

[0126] In some embodiments, the surface of the lamp plate inclined section 321 is rough. The rough surface includes tiny protrusions and depressions. In this way, the flexible circuit board 400 can deform at the protrusions and depressions. The protrusions and depressions can increase the contact area of the flexible circuit board 400 and the lamp plate inclined section 321, increase the friction between the flexible circuit board 400 and the lamp plate inclined section 321, prevent the flexible circuit board 400 from sliding or shifting during use, and further improve the connection stability of the flexible circuit board 400 and the lamp plate inclined section 321, thereby avoiding the bulging problem between the flexible circuit board 400 and the lamp plate 300.

[0127] In some embodiments, the lamp plate 300 is an aluminum plate. For example, the surface of the lamp plate inclined section 321 is treated using a sandpaper tool to make the surface of the lamp plate 300 uneven.

[0128] In some embodiments, along the thickness direction of the display device, the extension length T of the lamp plate inclined section 321 in the second direction in the orthographic projection on the surface of the back plate 200 satisfies:

[0129] wherein K is the distance from the lamp body 340 of the most edge of the lamp plate 300 to the through hole 200a.

[0130] When the value of T is less than one half of K, the extension length of the lamp plate inclined section 321 in the second direction is too small. In this way, the stress relief of the lamp plate inclined section 321 to the bending of the flexible circuit board 400 is limited, and the flexible circuit board 400 can still bulge, and the bulging flexible circuit board 400 can still affect the light emission of the lamp plate 300.

[0131] When the value of T is greater than three fourths of K, the extension length of the lamp plate inclined section 321 in the second direction is too large. In this way, the contact area of the most edge lamp body 340 and the lamp plate 300 is limited, which is not conducive to the installation of the lamp body 340 and reduces the use performance of the lamp plate 300. Therefore, the extension length T of the lamp plate inclined section 321 on the back plate 200 satisfies the following formula:

[0132] In this way, the bending stress of the flexible circuit board 400 can be effectively relieved to avoid the bulging phenomenon, and at the same time, the contact area of the lamp body 340 and the lamp plate 300 is sufficient to facilitate the installation and fixation of the lamp body 340.

[0133] In some embodiments, the value of T is two thirds of K.

[0134] In some embodiments, the lamp plate inclined section 321 of the first lamp plate 350 is arranged close to the first through hole 200b, facilitating the connection of the second end of the flexible circuit board 400 and the connector 700, and simplifying the installation process of the flexible circuit board 400. Meanwhile, when the flexible circuit board 400 needs to be maintained or replaced, it is also more convenient and fast.

[0135] In some embodiments, the lamp plate inclined section 321 of the second lamp plate 360 is arranged close to the second through hole 200c. This facilitates the connection of the second end of the flexible circuit board 400 and the connector 700, and simplifies the installation process of the flexible circuit board 400. Meanwhile, when the flexible circuit board 400 needs to be maintained or replaced, it is also more convenient and fast.

[0136] In some embodiments, as shown in FIG. 20, along the thickness direction of the display device, the lamp plate inclined section 321 includes a lamp plate first end close to the lamp plate first face 310 and a lamp plate second end close to the lamp plate third face 330. The lamp plate first end is inclined towards the lamp body 340 relative to the lamp plate second end. The lamp plate inclined section 321 is connected with the back plate inclined section 221.

[0137] In some embodiments, the angle between the direction from the lamp plate first end to the lamp plate second end and the lamp plate first face 310 is greater than 150° and less than 170°. When the angle between the direction from the lamp plate first end to the lamp plate second end and the lamp plate first face 310 is less than 150°, the bending angle of the flexible circuit board 400 is still too large, and the mechanical stress of the flexible circuit board 400 is too large. The excessive mechanical stress is likely to cause the flexible circuit board 400 to break or be damaged. Moreover, when the angle between the direction from the lamp plate first end to the lamp plate second end and the lamp plate first face 310 is less than 150°, the contact area of the flexible circuit board 400 and the lamp plate inclined section 321 cannot be effectively increased, and the connection stability of the flexible circuit board 400 and the lamp plate inclined section 321 is reduced.

[0138] When the angle between the direction from the lamp plate first end to the lamp plate second end and the lamp plate first face 310 is greater than 170°, the lamp plate inclined section 321 almost becomes a horizontal section, which is not conducive to the bending of the flexible circuit board 400. The excessive angle increases the splicing area between adjacent lamp plates 300, causing the splicing to be not tight enough, affecting the stability and aesthetics of the overall structure of the display device. Moreover, the increased splicing area may cause light leakage, affecting the uniformity and consistency of light output and reducing the display effect.

[0139] Therefore, in the embodiments of the present disclosure, the angle between the direction from the lamp plate first end to the lamp plate second end and the lamp plate first face 310 is set to be greater than 150° and less than 170°, so as to disperse the bending stress of the flexible circuit board 400, reduce stress concentration, avoid the bulging phenomenon, and at the same time, reduce the splicing area between adjacent lamp plates 300, make the splicing more tight, and improve the stability and aesthetics of the overall structure of the display device.

[0140] In some embodiments, the angle between the direction from the first end of the lamp plate to the second end of the lamp plate and the first surface 310 of the lamp plate is 155°, 160°, 165°.

[0141] The flexible circuit board 400 comprises a first segment, a second segment and a third segment connected in sequence. The first segment covers part of the first surface 310 of the lamp plate. The second segment covers part of the second surface 320 of the lamp plate. The third segment covers part of the inclined segment 221 of the back plate.

[0142] By setting the inclined segment 321 of the lamp plate, the bending angle at the connection between the first segment and the second segment is reduced, the contact area between the second segment and the inclined segment 321 of the lamp plate is increased, the mechanical stress at the connection between the first segment and the second segment is reduced, and the problem of bulging at the connection between the flexible circuit board 400 and the lamp plate 300 is avoided. By setting the inclined segment 221 of the back plate, the bending angle at the connection between the second segment and the third segment is reduced, the contact area between the third segment and the inclined segment 221 of the back plate is increased, the mechanical stress caused by the bending of the second segment and the third segment is reduced, and the problem of bulging at the connection between the flexible circuit board 400 and the back plate 200 is avoided, thereby avoiding the problem of bulging between the first segment and the lamp plate 300.

[0143] In some embodiments, a chamfer structure 800 is arranged at the connection between the inclined segment 221 of the back plate and the inclined segment 321 of the lamp plate.

[0144] In some embodiments, a chamfer structure 800 is arranged at the connection between the inclined segment 321 of the lamp plate and the inclined segment 221 of the back plate. The chamfer structure 800 provides a smooth transition area for the flexible circuit board 400 at the connection between the lamp plate 300 and the back plate 200, reducing the sharp bending of the flexible circuit board 400 at the connection between the inclined segment 321 of the lamp plate and the inclined segment 221 of the back plate. The chamfer structure 800 makes the connection between the inclined segment 321 of the lamp plate and the inclined segment 221 of the back plate smoother, avoiding the problem of bulging at the connection, thereby maintaining the uniform propagation of light of the lamp body 340 and ensuring the visual effect and performance of the display panel 100. At the same time, the chamfer structure 800 can effectively disperse stress, avoiding stress concentration of the flexible circuit board 400 at a certain point, thereby improving the durability and reliability of the flexible circuit board 400.

[0145] In some embodiments, the chamfer structure 800 comprises an inverted right angle and an inverted round angle.

[0146] In some embodiments, as shown in FIGS. 21-23, the first end of the flexible circuit board is provided with a first opening 400a. The reflector 500 is arranged on the side of the flexible circuit board 400 facing the display panel 100. The second opening 521 is arranged on the reflector 500.

[0147] The first opening 400a and the second opening 521 are in communication, and part of the lamp body 340 is connected with the lamp panel 300 through the first opening 400a and the second opening 521. In the thickness direction of the display device, the orthographic projection of the hole edge of the first opening 400a on the plane where the reflective sheet 500 is located is circumscribed around the outer periphery of the second opening 521.

[0148] In some embodiments, during the assembly of the display device, the lamp body 340 is bonded to the lamp panel 300 by applying glue on the side of the lamp panel 300 away from the back plate 200. Then, the flexible circuit board 400 and the lamp panel 300 are connected. The side of the lamp panel 300 close to the display panel 100 is provided with a solder pad. The solder pad on the flexible circuit board 400 and the solder pad on the lamp panel 300 are connected. At the same time, the lamp body 340 passes through the first opening 400a on the flexible circuit board 400. Then, the reflective sheet 500 is arranged on the side of the flexible circuit board 400 away from the lamp panel 300, and at this time, the lamp body 340 passes through the second opening 521 on the reflective sheet 500.

[0149] Since the reflectivity of the reflective sheet 500 is higher than that of the flexible circuit board 400, in order to improve the reflectivity of the light, it is necessary to avoid the light emitted by the lamp body 340 being reflected by the flexible circuit board 400. At this time, it is necessary to control the size relationship between the first opening 400a and the second opening 521. In the display device provided in the embodiments of the present disclosure, in the thickness direction of the display device, the orthographic projection of the hole edge of the first opening 400a on the plane where the reflective sheet 500 is located is circumscribed around the outer periphery of the second opening 521, so that the aperture of the second opening 521 on the reflective sheet 500 is not greater than the aperture size of the first opening 400a of the flexible circuit board 400, the reflective sheet 500 covers the hole edge of the flexible circuit board 400 where the first opening 400a is arranged, avoiding the light being reflected by the flexible circuit board 400, and the light emitted by the lamp panel 300 is smoothly reflected by the reflective sheet 500, so as to maximize the reflection and utilization of the light, improve the uniformity of the light propagation, and improve the brightness uniformity of the display device.

[0150] In some embodiments, referring to ① shown in FIG. 23, the aperture of the first opening 400a is not less than the aperture of the second opening 521.

[0151] In some embodiments, the aperture of the second opening 521 is not less than the diameter of the lamp body 340. By setting the aperture of the first opening 400a to be not less than the aperture of the second opening 521 and setting the aperture of the second opening 521 to be not less than the diameter of the lamp body 340, it is ensured that the light emitted by the lamp body 340 can smoothly pass through the first opening 400a and the second opening 521, and the reflection of the light on the side walls of the first opening 400a and the second opening 521 is avoided. In this way, the light is not blocked or shielded by the flexible circuit board 400 and the side walls of the second opening 521, so as to improve the light efficiency and display effect and ensure smooth light transmission.

[0152] By setting the aperture of the second opening 521 of the reflective sheet 500 to be no greater than the diameter of the first opening 400a of the flexible circuit board 400, the light emitted by the lamp body 340 is prevented from being reflected by the flexible circuit board 400, the loss of light during transmission is minimized, and the light can effectively irradiate the display panel 100, thereby improving light utilization.

[0153] In some embodiments, the center of the first opening 400a, the center of the second opening 521, and the center of the lamp body 340 coincide. In this way, the first opening 400a and the second opening 521 are coaxially arranged, and the light emitted by the lamp body 340 can pass through the first opening 400a and the second opening 521 to the greatest extent, ensuring that the light emitted by the lamp body 340 can smoothly pass through the second opening 521 and the first opening 400a along the shortest path, reducing scattering and loss of light, and improving light efficiency and display effect.

[0154] In some embodiments, the radial dimension of the second opening 521 near one end of the lamp plate 300 is no greater than the radial dimension of the second opening 521 away from the one end of the lamp plate 300.

[0155] In some embodiments, as shown in ② and ③ of FIG. 23, along the thickness direction of the display device, the second opening 521 forms a gradually expanding channel, which helps to guide and concentrate the light emitted by the lamp body 340, so that the light can pass through the second opening 521 more effectively, reducing scattering and loss of light, and improving light efficiency and display effect. In this way, the light is more evenly distributed on the display panel 100 after passing through the second opening 521, avoiding the appearance of bright or dark spots, thereby improving display quality. In addition, the gradually expanding opening design can provide more operating space during assembly, facilitating the alignment and installation of the reflective sheet 500, and improving assembly efficiency and precision.

[0156] In some embodiments, the radial dimension of the second opening 521 near one end of the lamp plate 300 is equal to the radial dimension of the second opening 521 away from the one end of the lamp plate 300.

[0157] In some embodiments, the radial dimension of the first opening 400a near one end of the lamp plate 300 is equal to the radial dimension of the first opening 400a away from the one end of the lamp plate 300.

[0158] In some embodiments, the radial dimension of the first aperture 400a near one end of the lamp plate 300 is equal to the radial dimension of the first aperture 400a away from the one end of the lamp plate 300. The radial dimension of the second aperture 521 near one end of the lamp plate 300 is equal to the radial dimension of the second aperture 521 away from the one end of the lamp plate 300. In this way, the flexible circuit board 400 does not cause loss of light transmission, ensuring that light can effectively irradiate the display panel 100, improving light utilization. At the same time, the equal-diameter design of the first aperture 400a and the second aperture 521 simplifies the design and manufacturing process, reduces complexity and manufacturing cost, and improves production efficiency and product consistency.

[0159] In some embodiments, the radial dimension of the first aperture 400a near one end of the lamp plate 300 is equal to the radial dimension of the first aperture 400a away from the one end of the lamp plate 300. The radial dimension of the second aperture 521 near one end of the lamp plate 300 is less than the radial dimension of the second aperture 521 away from the one end of the lamp plate 300. The equal-diameter design of the first aperture 400a ensures smooth passage of light, while the gradually expanding design of the second aperture 521 can guide light to pass through the aperture more effectively, reducing light obstruction and loss, and improving light efficiency and display effect. The gradually expanding design of the second aperture 521 can reduce light scattering at the edge of the aperture, allowing more light to pass directly through the aperture and improving light utilization. Part of the light emitted by the lamp body 340 is emitted towards the second aperture 521, and at this time, the part of the light is emitted through the second aperture 521 after being reflected by the side wall surface of the reflective sheet 500. The light loss of the lamp body 340 is small.

[0160] Referring to FIG. 24, the reflective sheet 500 can include a first reflective segment 510 and a second reflective segment 520 connected to each other. In the thickness direction of the display device, the flexible circuit board 400 covers the second reflective segment 520 in the orthographic projection on the plane where the lamp plate 300 is located.

[0161] The first reflective segment 510 is provided with a reflective sheet aperture 511, and the second reflective segment 520 is provided with a second aperture 521. The aperture diameter of the reflective sheet aperture 511 is not greater than the aperture diameter of the second aperture 521.

[0162] In some embodiments, a portion of the lamp plate 300 is covered by the flexible circuit board 400. Another portion of the lamp plate 300 is not covered by the flexible circuit board 400. The reflective sheet 500 is arranged on the side of the lamp plate 300 close to the display panel 100. A portion of the reflective sheet 500 is arranged above the flexible circuit board 400. Another portion of the reflective sheet 500 is directly arranged above the lamp plate 300. Considering the difference in reflectivity between the flexible circuit board 400 and the reflective sheet 500, the diameter of the lamp body 340, the aperture diameter of the first aperture 400a on the flexible circuit board 400, and the aperture diameter of the second aperture 521 on the reflective sheet 500 need to be considered.

[0163] The reflective sheet 500 not covering the flexible circuit board 400 is a first reflective section 510. The first reflective section 510 is provided with a reflective sheet opening 511. The reflective sheet 500 covering the flexible circuit board 400 is a second reflective section 520. The second reflective section 520 is provided with a second opening 521. The reflective sheet opening 511 is provided, the first reflective section 510 directly covers the lamp plate 300 close to the display panel 100 side, and there is no need to consider the reflectivity difference problem of the flexible circuit board 400 and the reflective sheet 500, so the aperture of the reflective sheet opening 511 is greater than the diameter of the lamp body 340, and there is no need to consider the aperture relationship of the second opening 521. In this way, the aperture of the reflective sheet opening 511 is smaller than the aperture of the second opening 521, so as to further reduce the loss of light when passing through the reflective sheet 500, ensure that more light can be effectively utilized, and improve the light utilization rate.

[0164] In some embodiments, the ratio of the aperture of the first opening 400a to the aperture of the second opening 521 is greater than 1 and less than 1.2. When the ratio of the aperture of the first opening 400a to the aperture of the second opening 521 is greater than 1.2, the ratio of the first opening 400a and the second opening 521 is too large, and the light may be more blocked and scattered when passing through the smaller second opening 521, resulting in a decrease in light transmission efficiency and affecting the light efficiency and display effect.

[0165] When the ratio of the diameter of the first opening 400a to the diameter of the second opening 521 is less than 1, part of the flexible circuit board 400 is exposed in the thickness direction of the display device and faces the display panel 100. Since the reflectivity of the flexible circuit board 400 is lower than that of the reflective sheet 500, this will reduce the reflectivity of the light and affect the reflection of the light.

[0166] Therefore, in the embodiments of the present disclosure, by controlling the ratio of the aperture of the first opening 400a to the aperture of the second opening 521 to be greater than 1 and less than 1.2, the transmission efficiency of the light when passing through the opening is maximized, the blocking and loss of the light are reduced, and the light efficiency and display effect are improved.

[0167] In some embodiments, the ratio of the aperture of the first opening 400a to the aperture of the second opening 521 is 1.05, 1.1, or 1.15.

[0168] In some embodiments, there is a problem of unstable connection between the lamp plate 300 and the flexible circuit board 400 during use of the display device. In the display device provided in the embodiments of the present disclosure, the display device further includes a first adhesive 900. The first adhesive 900 is used to improve the connection strength of the lamp plate 300 and the flexible circuit board 400. Referring to FIGS. 25 and 26, part of the first adhesive 900 covers the first end of the flexible circuit board. Part of the first adhesive 900 fills the first opening. The first adhesive 900 wraps the flexible circuit board 400 and the lamp plate 300.

[0169] The display device provided by the embodiments of the present disclosure improves the mechanical connection strength between the flexible circuit board 400 and the lamp plate 300 by setting the first adhesive 900 and covering part of the first adhesive 900 on the first end of the flexible circuit board 400, and filling part of the first adhesive 900 into the first opening. The connection stability of the lamp plate 300 and the flexible circuit board 400 is improved. This design effectively reduces the risk of separation of the flexible circuit board 400 and the lamp plate 300 caused by long-term use. The use of the first adhesive 900 not only enhances the connection strength of the flexible circuit board 400 and the lamp plate 300, but also provides external protection for the flexible circuit board 400 and the lamp plate 300, preventing environmental factors (such as humidity, dust, etc.) from eroding the connection part of the lamp plate 300 and the flexible circuit board 400, thereby improving the reliability and service life of the entire display device. It can be understood that the first adhesive 900 will not affect the light emitted by the lamp body 340.

[0170] In some embodiments, referring to FIG. 26, the lamp plate 300 is provided with a lamp plate pad 370 on the side away from the back plate 200. The lamp plate pad 370 is used to provide an electrical connection point, and the circuit on the lamp plate 300 is used to electrically connect each lamp body 340 on the lamp plate 300 to form a complete circuit. The first plate segment 410 is provided with a circuit board pad 440 on the side close to the lamp plate 300. The lamp plate 300 and the flexible circuit board 400 are electrically connected through the lamp plate pad 370 and the circuit board pad 440. The circuit board pad 440 on the flexible circuit board 400 is used to electrically connect with the lamp plate pad 370 on the lamp plate 300, so as to realize the signal and power transmission between the flexible circuit board 400 and the lamp plate 300.

[0171] In some embodiments, the lamp plate pad 370 and the circuit board pad 440 are connected by a second adhesive. The second adhesive includes anisotropic conductive adhesive. Anisotropic conductive film (ACF adhesive) is a material used for electronic component connection. ACF adhesive is composed of conductive particles uniformly distributed in insulating adhesive, which can provide conductivity in a specific direction (usually vertical direction) while maintaining insulation in other directions. Among them, the conductive particles are usually gold-plated or silver-plated microspheres, which can form a conductive path during hot pressing. The insulating adhesive is usually a thermosetting resin, which can soften and fix during heating or pressing, providing mechanical strength and insulation performance.

[0172] On the lamp plate 300, a plurality of lamp plate pads 370 and lines are designed and manufactured in advance. The lamp plate pads 370 can be made of a conductive material (such as copper) and are electroplated to ensure good conductivity and durability. The lines are used to connect the plurality of lamp bodies 340 on the lamp plate 300 to form the required circuit. The first end of the flexible circuit board 400 is also provided with circuit board pads 440, which are matched in position and size with the lamp plate pads 370 on the lamp plate 300. The flexible circuit board 400 is usually made of polyimide and has good flexibility and heat resistance.

[0173] In the process of connecting the flexible circuit board 400 and the lamp plate 300, the ACF film is first attached to the circuit board pads 440 on the flexible circuit board 400, ensuring that the anisotropic conductive adhesive covers all the areas of the circuit board pads 440 that need to be connected and is free of bubbles or impurities. Subsequently, the first end of the flexible circuit board 400 is aligned with the lamp plate 300, and the circuit board pads 440 (covered with ACF film) on the flexible circuit board 400 are accurately aligned with the lamp plate pads 370. Then, the aligned flexible circuit board 400 and lamp plate 300 are thermally compressed using a hot-pressing device. The hot-pressing device activates the ACF film at a certain temperature and pressure, causing the conductive particles to form a conductive path in the vertical direction, while the insulating board adhesive remains insulating in the horizontal direction. After hot-pressing is completed, the ACF film solidifies during the cooling process, forming a stable electrical connection and mechanical fixation.

[0174] By providing the second adhesive, electrical connection between the lamp plate pads 370 and the circuit board pads 440 during use is achieved, ensuring the connection strength of the lamp plate 300 and the flexible circuit board 400.

[0175] In some embodiments, the flexible circuit board 400 includes a first board segment 410, a second board segment 420, and a third board segment 430 connected in sequence. The first board segment 410 is arranged on the side of the lamp plate 300 facing the display panel 100. The second board segment 420 and the lamp plate 300 are connected near the end of the through hole 200a. The third board segment 430 and the lamp plate 300 are connected on the side of the lamp plate 300 away from the display panel 100.

[0176] In some embodiments, the first board segment 410 is arranged on the side of the lamp plate 300 facing the display panel 100. The first board segment 410 and the lamp plate 300 are connected to ensure the stability of the electrical connection and mechanical connection between the first board segment 410 and the lamp plate 300. At least part of the second board segment 420 covers the end of the lamp plate 300 near the through hole 200a. The third board segment 430 is arranged on the side of the back plate 200 away from the display panel 100. In this way, by designing the flexible circuit board to be bent, the electrical circuits on both sides of the lamp plate 300 are bridged and the space is effectively utilized.

[0177] In some embodiments, to improve the connection stability of the lamp plate 300 and the first plate segment 410, the first glue 900 connects the first plate segment 410 and the lamp plate 300, ensuring the reliability and mechanical strength of the electrical connection between the lamp plate 300 and the first plate segment 410. The first glue 900 can also fill the gap between the first plate segment 410 and the lamp plate 300, further improving the connection strength of the lamp plate 300 and the flexible circuit board 400, and preventing the lamp plate 300 and the flexible circuit board 400 from loosening or breaking due to vibration or impact during use.

[0178] The first glue 900 has a certain protective effect, which can protect the lines and pads on the first plate segment 410 and the lamp plate 300 from the influence of the external environment, such as humidity, dust, etc., and improve the durability and reliability of the entire display device.

[0179] In some embodiments, referring to the left side of FIG. 27, along the thickness of the display device, the first glue 900 covers the first plate segment 410 in the orthographic projection of the surface where the lamp plate 300 is located. In this way, the first glue 900 forms a covering layer around the first plate segment 410. This covering layer can provide additional mechanical support and enhance the connection stability between the first plate segment 410 and the lamp plate 300, preventing the first plate segment 410 and the lamp plate 300 from loosening or breaking due to vibration or impact during use. The covering layer of the first glue 900 can effectively protect the lines and pads on the first plate segment 410 from the influence of the external environment, such as humidity, dust, etc., and improve the durability and reliability of the entire display device.

[0180] In some embodiments, referring to the right side of FIG. 27, the first glue 900 includes a plurality of glue segments 930.

[0181] The first plate segment 410 includes a first plate body, a first side edge, a second side edge, a third side edge, and a fourth side edge. The first side edge, the second side edge, the third side edge, and the fourth side edge are sequentially connected end to end.

[0182] The at least four glue segments 930 correspondingly cover the first side edge, the second side edge, the third side edge, and the fourth side edge. At least part of the glue segments 930 fill the first opening.

[0183] In some embodiments, the plurality of glue segments 930 of the first glue 900 respectively cover the four side edges of the first plate segment 410, forming a complete covering structure. This covering structure can provide additional mechanical support and enhance the connection stability between the first plate segment 410 and the lamp plate 300, preventing loosening or breaking due to vibration or impact during use.

[0184] The colloid section 930 of the first colloid 900 can effectively fix the position of the first plate section 410, prevent displacement and misalignment during installation and use, and ensure the accuracy and reliability of electrical connection. At least part of the colloid section 930 is filled in the first opening, which not only enhances the bonding force between the first colloid 900 and the first plate section 410, but also fixes the position of the lamp body 340, prevents displacement of the lamp body 340 during use, and improves the stability of the display device.

[0185] In some embodiments, the first colloid 900 includes ultraviolet light curing glue or transparent acrylic adhesive.

[0186] In some embodiments, the first colloid 900 can be ultraviolet light curing glue. Ultraviolet curing glue (UV glue) is an adhesive that is cured by ultraviolet light irradiation. Ultraviolet curing glue can be quickly cured under ultraviolet irradiation, usually only a few seconds to a few minutes. Ultraviolet curing glue usually has high transparency after curing, which does not affect the propagation of light of the lamp body 340. In addition, the shrinkage rate of ultraviolet curing glue during curing is low, which can maintain the dimensional stability of the bonding site and reduce stress concentration and deformation.

[0187] In some embodiments, the first colloid 900 can be transparent acrylic adhesive. Transparent acrylic adhesive usually has high transparency after curing, which does not affect the propagation of light of the lamp body 340. Transparent acrylic adhesive usually has a fast curing speed, which can improve production efficiency.

[0188] In some embodiments, the thickness of the first colloid 900 is greater than 40 μm and less than 50 μm. The first colloid 900 with this thickness range can provide sufficient mechanical strength and adhesion without being too thick to affect the overall thickness and aesthetics of similar devices.

[0189] When the thickness of the first colloid 900 is greater than 50 μm, the excessively thick first colloid 900 will significantly increase the overall thickness of the backlight module. The excessively thick first colloid 900 layer will increase the thermal resistance, affecting the heat dissipation performance of the circuit board and the lamp plate 300, which may cause the device to overheat, affecting its normal operation and service life. The excessively thick glue layer may generate a large internal stress during the curing process, causing the circuit board to deform or the solder joints to be unevenly stressed, affecting the reliability of the connection.

[0190] When the thickness of the first colloid 900 is less than 40 μm, the excessively thin first colloid 900 may not be able to provide sufficient adhesion, resulting in a connection between the flexible circuit board 400 and the lamp plate 300 that is not firm, affecting the reliability of the display device. The excessively thin first colloid 900 may not be able to completely fill the gap between the circuit board and the lamp plate 300, leaving air bubbles or voids, which affects the stability and reliability of the connection.

[0191] Therefore, in the embodiments of the present disclosure, the thickness of the first adhesive 900 is set to be greater than 40 μm and less than 50 μm, so as to improve the connection strength between the flexible circuit board 400 and the lamp plate 300, and ensure the connection stability between the flexible circuit board 400 and the lamp plate 300.

[0192] In some embodiments, referring to FIG. 28, along the direction perpendicular to the thickness direction of the display device, the lamp plate 300 includes the binding area 311 and the lamp plate body area 312 connected to each other. The binding area 311 is arranged close to the through hole 200a relative to the lamp plate body area 312.

[0193] The flexible circuit board 400 includes a flexible circuit board first end, a flexible circuit board middle section and a flexible circuit board second end connected in sequence. The flexible circuit board first end is arranged in the binding area 311 and connected to the binding area 311. The flexible circuit board first end is provided with a first opening. The flexible circuit board middle section covers at least the end of the lamp plate 300 close to the through hole 200a. The flexible circuit board second end is arranged on the side of the lamp plate 300 away from the display panel 100.

[0194] The first adhesive 900 includes a first adhesive section 910 and a second adhesive section 920 connected to each other. Part of the first adhesive section 910 covers the flexible circuit board first end. The second adhesive section 920 covers part of the lamp plate body area 312.

[0195] The display device provided by the embodiments of the present disclosure improves the connection strength of the flexible circuit board 400 and the binding area 311 of the lamp plate 300, the flexible circuit board 400 and the lamp plate body area 312 by arranging the first adhesive 900 as the first adhesive section 910 and the second adhesive section 920, prevents the connection between the flexible circuit board 400 and the lamp plate 300 from loosening or breaking due to external force, improves the connection stability of the lamp plate 300 and the flexible circuit board 400, improves the service life of the display device, and improves the use performance of the display device.

[0196] Referring to FIGS. 29-31, the back plate assembly has a back plate cavity with one end open. The opening faces the display panel 100. The back plate assembly is arranged on the side of the diffusion plate 600 away from the display panel 100. The side of the back plate assembly close to the opening is provided with a mounting surface 270. Along the thickness direction of the display device, the mounting surface 270 includes a mounting surface first end close to the display panel 100 and a mounting surface second end away from the display panel 100. Along the direction perpendicular to the thickness direction of the display device, the mounting surface second end is close to the back plate cavity relative to the mounting surface first end. Along the direction from the mounting surface first end to the mounting surface second end, the distance between the mounting surface 270 and the display panel 100 gradually increases.

[0197] The lamp plate 300 is located in the back plate cavity. The lamp plate 300 and the back plate assembly are connected. The lamp plate 300 is provided with a lamp body and a driving chip on one side close to the diffusion plate 600. The driving chip is used to control the working state of the lamp body.

[0198] The support part is provided on the driving chip, the first end of the support part covers the driving chip, and the second end of the support part is in contact with the diffusion plate 600.

[0199] The distance between the diffusion plate 600 and the lamp body of the lamp plate 300 is an optical distance. The optical distance (Optical Distance, OD) refers to the distance from the light source emitted by the lamp body to the diffusion plate 600. The size of the OD value has an important influence on the optical performance of the display device. The OD value will affect the uniformity of light on the diffusion plate 600. In the prior art, the OD value is evolving towards smaller and smaller. The material of the diffusion plate 600 includes polycarbonate (Polycarbonate, PC), polystyrene (Polystyrene, PS), and methyl methacrylate-styrene copolymer (Methyl Methacrylate-Styrene Copolymer, MS). The larger the size of the display device, the larger the size of the diffusion plate 600. In addition, part of the electric energy of the driving chip on the lamp plate 300 is converted into heat energy during use. The generated heat energy will cause the diffusion plate 600 to deform towards the side of the display panel 100. The larger the size of the diffusion plate 600, the greater the deformation of the diffusion plate 600 along the thickness direction of the display device, which will affect the OD value of the display device.

[0200] In the embodiment of the present disclosure, along the thickness direction of the display device, the mounting surface 270 includes a mounting surface first end close to the display panel 100 and a mounting surface second end away from the display panel 100. The distance between the mounting surface 270 and the display panel 100 gradually increases in the direction from the mounting surface first end to the mounting surface second end. In this way, during the installation process of the diffusion plate 600, the diffusion plate 600 will be pre-deformed. The diffusion plate 600 protrudes outward towards the direction of the back plate cavity. The pre-deformation can change the mechanical equilibrium state of the diffusion plate 600, so that it is easier to reach the equilibrium state during work. By setting the mounting surface 270, the diffusion plate 600 is pre-deformed during installation. In this way, the diffusion plate 600 is in a balance position close to the working state after installation, and the additional deformation and stress of the diffusion plate 600 caused by external forces during use of the display device are reduced, for example, the deformation of the diffusion plate 600 under the action of the thermal stress of the driving chip.

[0201] The display device provided by the embodiment of the present disclosure avoids the problem that the diffusion plate 600 deforms towards the display panel 100 under the action of external forces, improves the stability of the optical distance in the display device, and further improves the display effect of the display device.

[0202] In some embodiments, the backboard assembly comprises a backboard 200. The backboard 200 comprises a backboard bottom plate 240 and a backboard side plate 250. The backboard bottom plate 240 and the backboard side plate 250 surround to form a backboard cavity. The diffusion plate 600 and the display panel 100 are disposed at the opening of the backboard cavity. The end of the backboard side plate 250 close to the display side is formed with a mounting surface 270.

[0203] In some embodiments, the backboard bottom plate 240 is the main part of the backboard assembly. The backboard bottom plate 240 is the basic support of the backboard assembly. The backboard side plate 250 is perpendicular to the backboard bottom plate 240. The backboard side plate 250 surrounds the backboard bottom plate 240. The backboard side plate 250 and the backboard bottom plate 240 jointly constitute the boundary of the backboard cavity. The backboard cavity is used to accommodate the lamp plate 300 and the reflector sheet 500.

[0204] By providing the mounting surface 270 on the side of the backboard side plate 250 close to the opening, and mounting the end of the diffusion plate 600 on the mounting surface 270, the diffusion plate 600 is pre-bent when mounted. Since the diffusion plate 600 is already convex towards the direction close to the backboard cavity when the diffusion plate 600 is mounted, such design avoids the problem of deformation of the diffusion plate 600 towards the display panel 100 during use, improves the stability of the optical distance in the display device, and further improves the display effect of the display device.

[0205] In some embodiments, the backboard side plate 250 comprises a top side plate 251, a right side plate 254, a ground side plate 252 and a left side plate 253 connected in sequence. The left side plate 253 and the top side plate 251 are connected.

[0206] Along the first direction, the left side plate 253 and the right side plate 254 are oppositely arranged. Along the second direction, the top side plate 251 and the ground side plate 252 are oppositely arranged. The thickness direction of the display device is parallel to the third direction, and the first direction, the second direction and the third direction are perpendicular to each other in pairs; the first mounting surface is formed on the end of the top side plate 251 and the ground side plate 252 close to the diffusion plate 600. Along the thickness direction of the display device, the first mounting surface comprises a first mounting end close to the display panel 100 and a second mounting end away from the display panel 100. The second mounting end is closer to the backboard cavity than the first mounting end; along the direction from the first mounting end to the second mounting end, the distance between the first mounting surface and the display panel gradually increases; the second mounting surface is formed on the end of the left side plate 253 and the right side plate 254 close to the diffusion plate 600. Along the thickness direction of the display device, the second mounting surface comprises a third mounting end close to the display panel 100 and a fourth mounting end away from the display panel 100. The fourth mounting end is closer to the backboard cavity than the third mounting end. Along the direction from the third mounting end to the fourth mounting end, the distance between the second mounting surface and the display panel gradually increases.

[0207] The first mounting surface and the second mounting surface form a mounting surface 270.

[0208] In some embodiments, referring to FIGS. 29-30, the left side plate 253 and the right side plate 254 are oppositely arranged along a first direction. The first direction is indicated by X in FIG. 29. The top side plate 251 and the bottom side plate 252 are oppositely arranged along a second direction. The second direction is indicated by Y in FIG. 30. By forming the first mounting surface at the end of the top side plate 251 and the bottom side plate 252 close to the diffusion plate 600 and forming the second mounting surface at the end of the left side plate 253 and the right side plate 254 close to the diffusion plate 600, each end of the diffusion plate 600 is connected to the back plate side plate 250, so that each end of the diffusion plate 600 is pre-bent under the guidance of the mounting surface 270, the contact area between the diffusion plate 600 and the back plate side plate 250 is increased, the stability of the diffusion plate 600 structure is improved, the deformation of the diffusion plate 600 during use is avoided, the stability of the optical distance in the display device is improved, and the display effect of the display device is improved.

[0209] In some embodiments, the back plate assembly further comprises an enclosure side plate. A first end of the enclosure side plate is connected to the back plate side plate 250. A second end of the enclosure side plate extends towards the display panel 100. By arranging the enclosure side plate, light leakage from the edge of the diffusion plate 600 is avoided, ensuring that light is concentrated in the display area, improving the contrast and clarity of the display effect. In addition, the connection of the enclosure side plate and the back plate side plate 250 increases the structural stability of the entire back plate assembly.

[0210] In some embodiments, the number of lamp bodies is multiple, and the multiple lamp bodies are arranged in an array on the lamp plate 300; a driving chip is arranged between adjacent lamp bodies.

[0211] In some embodiments, the multiple lamp bodies are arranged in an array on the lamp plate 300 to ensure uniform distribution of light sources and reduce the occurrence of light spots and dark areas, thereby improving the uniformity of light of the diffusion plate 600.

[0212] In some embodiments, the support portion comprises a dispensing layer, both ends of the dispensing layer are connected to the driving chip and the diffusion plate 600, respectively; and the end of the dispensing layer close to the diffusion plate 600 does not exceed the end of the mounting surface close to the lamp plate 300. This design ensures that the dispensing layer does not interfere with the installation and light propagation path of the diffusion plate 600, optimizes the installation space, and improves the installation efficiency.

[0213] In some embodiments, the diffuser plate 600 is connected to the mounting surface via an adhesive. The adhesive provides strong adhesion, ensuring the diffuser plate 600 is securely fixed to the mounting surface and preventing loosening or detachment. The highly transparent adhesive ensures that light passes through the adhesive layer without interference, maintaining light purity and uniformity, and improving display performance. Using adhesive simplifies the installation process, reduces the use of mechanical fasteners, and improves installation efficiency.

[0214] In some embodiments, the back panel base plate 240, the back panel side plate 250, and the enclosure side plate are integrally molded. By making the back panel base plate 240, the back panel side plate 250, and the enclosure side plate integrally molded, the overall structure of the back panel assembly is more robust due to the absence of splicing or welding points, reducing quality differences caused by splicing or welding, and improving the structural strength and stability of the back panel assembly. Simultaneously, the integrally molded back panel assembly can effectively reduce light leakage from the gaps in the back panel 200, improving the contrast and clarity of the display effect.

[0215] In some embodiments, referring to Figures 31 and 32, the backplate assembly further includes a middle frame 260. The middle frame 260 is disposed on the side of the backplate 200 near the diffuser plate 600. The middle frame 260 and the backplate 200 are connected. A mounting surface 270 is provided on the side of the middle frame 260 near the opening.

[0216] In some embodiments, the backplate 200 is the main support structure of the entire backplate assembly, and the backplate 200 can be made of metal or high-strength plastic. The backplate 200 provides mechanical strength and structural stability. The middle frame 260 is located on the side of the backplate 200 closest to the diffuser plate 600, a design that allows the middle frame 260 to directly support and secure the diffuser plate 600. The combination of the backplate 200 and the middle frame 260 provides greater structural stability. The backplate 200 provides overall mechanical strength, while the middle frame 260 provides precise support for the diffuser plate 600.

[0217] In some embodiments, the angle between the direction from the first end to the second end of the mounting surface and the plane where the display panel 100 is located is greater than 5° and less than 30°.

[0218] When the angle between the direction from the first end to the second end of the mounting surface and the plane where the display panel 100 is located is less than 5°, the pre-bending degree of the diffuser plate 600 is limited. During use, the diffuser plate 600 will still bend towards the display panel 100, affecting the optical distance (OD) value of the display device. Furthermore, the bending of the diffuser plate 600 towards the display panel 100 may cause friction between the diffuser plate 600 and the display panel 100, potentially damaging the display panel 100. Additionally, if the tilt angle of the mounting surface 270 is too small, it will increase the difficulty of manufacturing the mounting surface 270.

[0219] When the angle formed by the direction from the first end of the mounting surface to the second end of the mounting surface to the plane on which the display panel 100 is located is greater than 30°, that is, the inclination angle of the mounting surface 270 is large, the mounting surface 270 is steep, and thus the diffusion plate 600 is prone to stress concentration, deformation or rupture, which is not conducive to the structural stability of the diffusion plate 600. At the same time, the large angle of the mounting inclined surface causes uneven stress distribution of the connecting glue during curing, which easily causes cracking or peeling of the connecting glue, affecting the bonding strength and stability of the diffusion plate 600 and the back plate assembly.

[0220] Therefore, in the embodiments of the present disclosure, the angle range formed by the direction from the first end of the mounting surface to the second end of the mounting surface to the plane on which the display panel 100 is located is set to be greater than 5° and equal to 30°. Such an angle range can form a proper support angle between the diffusion plate 600 and the mounting surface 270, avoid deformation of the diffusion plate 600 during use, and ensure the structural stability and durability of the diffusion plate 600. At the same time, the diffusion plate 600 and the mounting surface 270 have sufficient contact area, and the connecting glue can provide sufficient bonding force to ensure the stable fixation of the diffusion plate 600.

[0221] In some embodiments, along the thickness direction of the display device, the projection of the mounting surface 270 on the plane on which the display panel 100 is located has an extension length range perpendicular to the thickness direction of the display device greater than 3 mm and less than 5 mm.

[0222] When, along the thickness direction of the display device, the projection of the mounting surface 270 on the plane on which the display panel 100 is located has an extension length range perpendicular to the thickness direction of the display device less than 3 mm, the contact area of the diffusion plate 600 and the back plate assembly is limited, and the back plate assembly cannot provide sufficient support force for the diffusion plate 600. The diffusion plate 600 is prone to deformation or damage when subjected to external force, affecting the stability of the overall structure. In addition, the small extension length of the mounting surface 270 along the direction perpendicular to the thickness direction of the display device can result in insufficient contact area of the diffusion plate 600 and the connecting glue, which can cause the diffusion plate 600 to loosen or fall off. Moreover, the small extension length of the mounting surface 270 can increase the difficulty of alignment and fixation during installation of the diffusion plate 600, reducing the installation efficiency.

[0223] When, along the thickness direction of the display device, the projection of the mounting surface 270 on the plane on which the display panel 100 is located has an extension length range perpendicular to the thickness direction of the display device greater than 5 mm, the mounting surface 270 will block the light emitted by the lamp body, increase the light loss, reduce the utilization efficiency of the light, and affect the display effect.

[0224] Therefore, in the embodiments of the present disclosure, along the thickness direction of the display device, the extension length of the normal projection of the mounting surface 270 on the surface where the display panel 100 is located in the thickness direction of the display device is less than 3 mm and greater than 5 mm, so as to ensure that the diffusion plate 600 and the mounting surface 270 of the back plate assembly have sufficient contact area, and ensure that the diffusion plate 600 is firmly fixed. At the same time, it avoids the influence of the back plate assembly on the propagation of light, avoids light spots and dark areas, and improves the uniformity of the display effect.

Claims

1. A display device, comprising: a display panel having a display side; a back plate disposed on a side of the display panel away from the display side, the back plate comprising: a through hole extending along a thickness direction of the display device; a first back plate surface facing the display panel; a lamp plate disposed on the first back plate surface; a second back plate surface having a back plate inclined section disposed at the through hole; a third back plate surface disposed opposite the first back plate surface along the thickness direction of the display device; wherein the second back plate surface connects the first back plate surface and the third back plate surface; the back plate inclined section comprising: a first back plate end disposed close to the first back plate surface along the thickness direction of the display device; a second back plate end disposed close to the third back plate surface along the thickness direction of the display device; the second back plate end being closer to a center of the lamp plate than the first back plate end along a direction perpendicular to the thickness direction of the back plate; the lamp plate having a lamp body disposed on a side of the lamp plate close to the display panel; a flexible circuit board comprising: a first flexible circuit board end connected to the lamp plate; a second flexible circuit board end connected to the back plate inclined section; a middle flexible circuit board section covering at least an end of the lamp plate close to the through hole; the middle flexible circuit board section connecting the first flexible circuit board end and the second flexible circuit board end; a reflective sheet disposed on a side of the lamp plate and the flexible circuit board facing the display panel, for reflecting light of the lamp body. 2.The display device of claim 1, wherein a distance between the back plate inclined section and the display panel gradually increases along a direction from the first back plate end to the second back plate end. 3.The display device of claim 2, wherein the back plate inclined section is disposed on a middle section of the second back plate surface along a first direction perpendicular to the thickness direction of the display device; and wherein a surface of the back plate inclined section facing the through hole forms part of an inner wall of the through hole. 4.The display device of claim 3, wherein the back plate inclined section comprises: a first inclined section connected to the first back plate surface; a second inclined section connected to the first inclined section; and a third inclined section connected to the third back plate surface; wherein the second inclined section connects the first inclined section and the third inclined section; an extension direction of the first inclined section and the third inclined section is parallel, and an extension direction of the second inclined section intersects the extension direction of the first inclined section and the third inclined section; and wherein the first inclined section comprises: a first inclined end disposed close to the first back plate surface along the thickness direction of the display device; and a second inclined end disposed close to the third back plate surface along the thickness direction of the display device; the second inclined end is disposed closer to the center of the lamp plate than the first inclined end along a direction perpendicular to the thickness direction of the display device; and a distance between the first inclined section and the display panel increases along a direction from the first inclined end to the second inclined end. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 5. The display device of claim 4, wherein the back plate comprises: a back plate center line arranged at a middle section of the back plate along a second direction; and a plurality of through holes arranged at the back plate center line along a first direction.

6. The display device of claim 5, wherein the lamp plate comprises: a plurality of first lamp plates arranged at a first side of an extension direction of the back plate center line along the second direction; and a plurality of second lamp plates arranged at a second side of the extension direction of the back plate center line opposite to the first side along the second direction.

7. The display device of claim 6, wherein the lamp plate comprises: a first surface of the lamp plate facing the display panel, the first surface of the lamp plate being provided with lamp bodies; a second surface of the lamp plate provided with a lamp plate inclined section; and a third surface of the lamp plate connected with the back plate, the first surface of the lamp plate and the third surface of the lamp plate being oppositely arranged along a thickness direction of the lamp plate, and the second surface of the lamp plate connecting the first surface of the lamp plate and the third surface of the lamp plate.

8. The display device of claim 7, wherein the lamp plate inclined section comprises: a first end of the lamp plate inclined section close to the first surface of the lamp plate along the thickness direction of the lamp plate; and a second end of the lamp plate inclined section close to the third surface of the lamp plate along the thickness direction of the lamp plate, the second end of the lamp plate inclined section being opposite to the first end of the lamp plate inclined section and away from the lamp bodies along a direction perpendicular to the thickness direction of the lamp plate.

9. The display device of claim 8, wherein the back plate comprises: a back plate center line arranged at a middle section of the back plate along a second direction; and a first through hole arranged at a first side of an extension direction of the back plate center line along the second direction. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ A second through hole is arranged on a second side opposite to the first side of the extension direction of the center line of the back plate along the second direction; wherein the first through hole and the second through hole are not communicated with each other; the number of the first through hole is multiple, the number of the second through hole is multiple, and the multiple first through holes and the multiple second through holes are correspondingly arranged.

10. A display device, comprising: a display panel having a display side; a back plate arranged on a side of the display panel away from the display side, the back plate being provided with a through hole; a lamp plate arranged between the back plate and the display panel and connected with the back plate, the lamp plate being provided with a lamp body; a flexible circuit board, comprising: a first end of the flexible circuit board connected with the lamp plate and having a first aperture; a second end of the flexible circuit board arranged on a side of the lamp plate away from the display panel; a middle section of the flexible circuit board covering at least an end of the lamp plate close to the through hole; the middle section of the flexible circuit board connecting the first end and the second end of the flexible circuit board; a reflective sheet for reflecting light of the lamp body, the reflective sheet being arranged on a side of the flexible circuit board facing the display panel and having a second aperture, the second aperture and the first aperture being communicated, the lamp body passing through the first aperture and the second aperture and being connected with the lamp plate, and along the thickness direction of the display device, a projection of a hole edge of the first aperture on a plane where the reflective sheet is located encloses an outer periphery of the second aperture.

11. The display device of claim 10, wherein the reflective sheet comprises: a first reflective section provided with a reflective sheet aperture; a second reflective section connected with the first reflective section, the second reflective section being provided with the second aperture; along the thickness direction of the display device, a projection of the flexible circuit board on a plane where the lamp plate is located covers the second reflective section, and wherein an aperture diameter of the reflective sheet aperture is not greater than an aperture diameter of the second aperture.

12. The display device of claim 10, wherein the back plate comprises: a center line of the back plate arranged on a middle section of the back plate along a direction perpendicular to the thickness direction of the display device; the display device further comprises: a first through hole arranged on a first side of the extension direction of the center line of the back plate along a direction perpendicular to the thickness direction of the display device, the number of the first through hole being multiple; a second through hole not communicated with the first through hole, the second through hole being arranged on a second side opposite to the first side of the extension direction of the center line of the back plate along a direction perpendicular to the thickness direction of the display device, the number of the second through hole being multiple, and wherein the multiple first through holes and the multiple second through holes are correspondingly arranged; the lamp plate comprises: a first lamp plate, the number of the first lamp plate being multiple, and the multiple first lamp plates being arranged on the first side of the extension direction of the center line of the back plate along a direction perpendicular to the thickness direction of the display device. A second lamp plate is arranged on a second side opposite to a first side of the center line of the back plate in a direction perpendicular to the thickness direction of the display device; the number of the second lamp plates is plural; the first lamp plates and the first through holes are arranged one by one in correspondence; the second lamp plates and the second through holes are arranged in correspondence.

13. A display device, comprising: a display panel having a display side; a back plate arranged on a side of the display panel away from the display side, the back plate being provided with a through hole; a lamp plate arranged between the back plate and the display panel and connected with the back plate, the lamp plate being provided with a lamp body; a flexible circuit board, comprising: a first end of the flexible circuit board arranged on a side of the lamp plate close to the display panel and connected with the lamp plate; the first end of the flexible circuit board being provided with a first opening; a second end of the flexible circuit board arranged on a side of the lamp plate away from the display panel; a middle section of the flexible circuit board covering at least an end of the lamp plate close to the through hole; the middle section of the flexible circuit board connecting the first end and the second end of the flexible circuit board; a reflecting sheet for reflecting light of the lamp body; the reflecting sheet being arranged on a side of the flexible circuit board facing the display panel and provided with a second opening, the second opening and the first opening being in communication; the lamp body being connected with the lamp plate through the first opening and the second opening; a first adhesive, part of the first adhesive being arranged on the first end of the flexible circuit board, part of the first adhesive being filled into the first opening, and the first adhesive wrapping the flexible circuit board and the lamp plate.

14. The display device of claim 13, the flexible circuit board comprising: a first plate section arranged on a side of the lamp plate facing the display panel, a second plate section connected with an end of the lamp plate close to the through hole; a third plate section connected with a side of the lamp plate away from the display panel; wherein the second plate section connects the first plate section and the third plate section.

15. The display device of claim 14, in the thickness direction of the display device, a projection of the first adhesive on a plane where the lamp plate is arranged covers the first plate section.

16. The display device of claim 14, the first adhesive comprising a plurality of adhesive sections; the first plate section comprising a first plate body, a first side edge, a second side edge, a third side edge and a fourth side edge, the first side edge, the second side edge, the third side edge and the fourth side edge being sequentially connected end to end; at least four of the adhesive sections correspondingly covering the first side edge, the second side edge, the third side edge and the fourth side edge; and at least part of the adhesive sections being filled into the first opening.

17. The display device of claim 16, a lamp plate pad being arranged on a side of the lamp plate away from the back plate; a circuit board pad being arranged on a side of the first plate section close to the lamp plate; the lamp plate and the flexible circuit board being electrically connected through the lamp plate pad and the circuit board pad; the lamp plate pad and the circuit board pad being connected through a second adhesive.

18. The display device of any one of claims 13-17, the back plate comprising: a back plate center line disposed in a middle section of the back plate along a direction perpendicular to a thickness direction of the display device; the through holes comprising: first through holes disposed on a first side of an extension direction of the back plate center line along a direction perpendicular to the thickness direction of the display device, the first through holes being a plurality in number; second through holes disposed on a second side opposite to the first side of the extension direction of the back plate center line along a direction perpendicular to the thickness direction of the display device, the second through holes being a plurality in number, the first through holes and the second through holes being disposed correspondingly; the lamp plate comprising: first lamp plates disposed on the first side of the extension direction of the back plate center line along a direction perpendicular to the thickness direction of the display device, the first lamp plates being a plurality in number; second lamp plates disposed on the second side opposite to the first side of the extension direction of the back plate center line along a direction perpendicular to the thickness direction of the display device, the second lamp plates being a plurality in number; wherein the first lamp plates and the first through holes are disposed correspondingly one by one, and the second lamp plates and the second through holes are disposed correspondingly one by one.

19. A display device comprising: a display panel having a display side; a back plate disposed on a side of the display panel away from the display side, the back plate being provided with a through hole; a lamp plate disposed between the back plate and the display panel and connected with the back plate, the lamp plate being provided with a lamp body, the lamp plate comprising: a lamp plate body area; a binding area connected with the lamp plate body area, the binding area being disposed closer to the through hole than the lamp plate body area along a direction perpendicular to a thickness direction of the display device; a flexible circuit board comprising: a first end of the flexible circuit board disposed in the binding area and connected with the binding area, the first end of the flexible circuit board being provided with a first opening; a second end of the flexible circuit board disposed on a side of the lamp plate away from the display panel; a middle section of the flexible circuit board covering at least an end of the lamp plate closer to the through hole, the middle section of the flexible circuit board connecting the first end and the second end of the flexible circuit board; a reflective sheet for reflecting light of the lamp body, the reflective sheet being disposed on a side of the flexible circuit board facing the display panel and having a second opening, the first opening and the second opening being in communication, the lamp body being connected with the lamp plate through the first opening and the second opening; a first adhesive comprising: a first adhesive section covering part of the first end of the flexible circuit board; a second adhesive section covering part of the lamp plate body area and connected with the first adhesive.

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