Display device

Abstract

The embodiment of the utility model belongs to the technical field of display, and provides a display device which comprises a display panel, a backboard, a lamp panel, a flexible circuit board and a reflector plate. The lamp panel is arranged between the back plate and the display panel. The lamp panel is provided with a lamp panel first face, a lamp panel second face and a lamp panel third face. The lamp body is arranged on the lamp panel first face. The lamp panel second face is provided with a lamp panel inclined section. The lamp panel inclined section comprises a lamp panel first end close to the lamp panel first face and a lamp panel second end close to the lamp panel third face. The distance between the lamp panel inclined section and the display panel is gradually increased in the direction from the lamp panel first end to the lamp panel second end. The two ends of the flexible circuit board are connected with the first lamp panel face and the third lamp panel face respectively. The middle section of the flexible circuit board at least covers the lamp panel inclined section. According to the display device, the bending angle of the flexible circuit board is reduced, the problem that the flexible circuit board bulges is avoided, and the display effect of the display device is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of display technology, and more particularly to a display device. Background Art

[0002] A display device is an electronic device used to present visual information. It can convert digital signals into visual images or text for users to watch and interact with.

[0003] In the prior art, a display device includes a display panel and a backlight module. The backlight module includes a direct-type backlight module. When a direct-type backlight module is used in a large-size display screen or a spliced display wall (Video Wall), it is usually necessary to splice multiple backlight modules together to form an integrated display area. The direct-type backlight module includes a back panel, a light board, a flexible circuit board, and a reflective sheet. The flexible circuit board is bent at the light board to connect the binding area on the light board and the connector on the other side of the light board to reduce the seam of the direct-type backlight module.

[0004] However, existing display devices have the problem of poor display effects. Utility Model Content

[0005] An embodiment of the present application provides a display device, which improves the display effect of the display device.

[0006] An embodiment of the present application provides a display device, including:

[0007] a display panel having a display side;

[0008] A back plate, provided on a side of the display panel away from the display side;

[0009] The light board is arranged between the backboard and the display panel, and the light board and the backboard are connected;

[0010] The light board has:

[0011] A first surface of the light board, the first surface of the light board faces the display panel, and a lamp body is provided on the first surface of the light board;

[0012] The second side of the light board has a light board inclined section;

[0013] The third side of the light board is connected to the back board;

[0014] Along the thickness direction of the light board, the first surface of the light board and the third surface of the light board are arranged opposite to each other, and the second surface of the light board connects the first surface of the light board and the third surface of the light board;

[0015] The light panel tilt section includes:

[0016] The first end of the light board is close to the first surface of the light board along the thickness direction of the light board;

[0017] The second end of the lamp board, along the thickness direction of the lamp board, the second end of the lamp board is close to the third surface of the lamp board;

[0018] Along the direction perpendicular to the thickness direction of the lamp board, the second end of the lamp board faces away from the lamp body relative to the first end of the lamp board;

[0019] A flexible circuit board, connected to the lamp board,

[0020] The flexible circuit board includes:

[0021] The first end of the flexible circuit board, connected to the first surface of the lamp board

[0022] The second end of the flexible circuit board, connected to the third surface of the lamp board;

[0023] The middle section of the flexible circuit board at least covers the inclined section of the lamp board;

[0024] The middle section of the flexible circuit board connects the first end and the second end of the flexible circuit board.

[0025] A reflective sheet is arranged on the side of the lamp board and the flexible circuit board facing the display panel.

[0026] The above solution has the following advantages or beneficial effects: By arranging the inclined section on the lamp board, the inclined section of the lamp board provides a smooth transition path for the bending of the flexible circuit board, the first end of the flexible circuit board is connected to the first surface of the lamp board, the second end of the flexible circuit board is connected to the third surface of the lamp board, and the middle section of the flexible circuit board at least covers the inclined section of the lamp board, increasing the bending angle at the connection between the first surface of the lamp board and the inclined section of the lamp board, thereby reducing the bending angle of the flexible circuit board, avoiding sharp bending during the connection of the flexible circuit board, reducing the mechanical stress generated by the bending of the flexible circuit board, avoiding the problem of bulging at the connection between the flexible circuit board and the lamp board, and further avoiding the problem of the bulging affecting the light propagation uniformity of the lamp body.

[0027] In some embodiments of the present application, along the direction from the first end to the second end of the lamp board, the distance between the inclined section of the lamp board and the display panel gradually increases.

[0028] The above solution has the following advantages or beneficial effects: By setting the distance between the inclined section of the lamp board and the display panel to gradually increase, the bending angle of the flexible circuit board is reduced, the stress generated by the bending of the flexible circuit board is reduced, and further the problem of the bulging affecting the light propagation uniformity of the lamp body is avoided.

[0029] In some embodiments of the present application, along the first direction, the inclined section of the lamp board is arranged in the middle section of the second surface of the lamp board, and the first direction is perpendicular to the thickness direction of the display device.

[0030] The above solution has the following advantages or beneficial effects: The second side of the lamp board includes a vertical section and an inclined section of the lamp board. After the inclined section of the lamp board is arranged between two vertical sections of the lamp board, there is a step between the inclined section of the lamp board and the vertical section of the lamp board, and the step plays a limiting role on the flexible circuit board, avoiding the movement of the flexible circuit board and the problems of poor contact or open circuit caused by the movement of the flexible circuit board, and improving the connection stability of the flexible circuit board.

[0031] In some embodiments of the present application,

[0032] A chamfer structure is provided at the connection between the inclined section of the lamp board and the first side of the lamp board; and / or, a chamfer structure is provided at the connection between the inclined section of the lamp board and the third side of the lamp board.

[0033] The above solution has the following advantages or beneficial effects: The chamfer structure provides a smooth transition area for the flexible circuit board bent at the lamp board, avoiding the sharp bending of the flexible circuit board at the connection between the inclined section of the lamp board and the first side of the lamp board. In this way, the chamfer structure makes the connection between the flexible circuit board and the first side of the lamp board and the connection between the flexible circuit board and the third side of the lamp board smoother, avoiding the problem of bulging at the connection, and further maintaining the uniform propagation of the light of the lamp body and ensuring the visual effect and performance of the display panel.

[0034] In some embodiments of the present application, the surface of the inclined section of the lamp board is uneven.

[0035] The above solution has the following advantages or beneficial effects: The surface of the inclined section of the lamp board is a rough surface. The rough surface includes minute protrusions and depressions. The protrusions and depressions can increase the contact area between the flexible circuit board and the inclined section of the lamp board, increase the friction between the flexible circuit board and the inclined section of the lamp board, prevent the flexible circuit board from sliding or shifting during use, and further improve the connection stability between the flexible circuit board and the inclined section of the lamp board.

[0036] In some embodiments of the present application, the backplane has:

[0037] The center line of the backplane, along the second direction, the center line of the backplane is arranged in the middle section of the backplane;

[0038] Through holes, arranged at the center line of the backplane; the number of the through holes is multiple, and the multiple through holes are arranged at intervals along the first direction in sequence;

[0039] Wherein, 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.

[0040] The above solution has the following advantages or beneficial effects: By arranging the multiple through holes at intervals along the first direction and arranging the through holes at the center line of the backplane, the stress is evenly dispersed, avoiding stress concentration at a certain position, thereby improving the overall structural stability of the backplane and improving the symmetry and balance of the backplane.

[0041] In some embodiments of the present application, the through holes include:

[0042] A first through hole, along a second direction, the first through hole is disposed on a first side of the extension direction of the center line of the backplane;

[0043] A second through hole, along the second direction, the second through hole is disposed on a second side opposite to the first side of the extension direction of the center line of the backplane.

[0044] Wherein, the first through hole and the second through hole are not communicated with each other; the number of the first through holes is multiple, the number of the second through holes is multiple, and the multiple first through holes and the multiple second through holes are arranged in one-to-one correspondence.

[0045] The above solution has the following advantages or beneficial effects: The first through hole and the second through hole are respectively disposed on both sides of the extension direction of the center line of the backplane, forming a symmetric distribution. This design can evenly disperse stress, avoid stress concentration at a certain position, and thus improve the overall structural stability of the backplane. At the same time, the first through hole and the second through hole are used for the flexible circuit board to pass through, improving the neatness and reliability of the backplane.

[0046] In some embodiments of the present application, the lamp board includes:

[0047] A first lamp board, along the second direction, the first lamp board is disposed on a first side of the extension direction of the center line of the backplane;

[0048] A second lamp board, along the second direction, the second lamp board is disposed on a second side opposite to the first side of the extension direction of the center line of the backplane;

[0049] Wherein, the number of the first lamp boards is multiple, the number of the second lamp boards is multiple, the multiple first lamp boards and the multiple first through holes are arranged in one-to-one correspondence; the multiple second lamp boards and the multiple second through holes are arranged in one-to-one correspondence.

[0050] The above solution has the following advantages or beneficial effects: By arranging the first lamp board and the first through hole in one-to-one correspondence, and connecting the first lamp board to the connector through a flexible circuit board, individual control of each first lamp board is achieved. Each connector can independently transmit power and signals to the corresponding first lamp board, enabling each first lamp board to work independently and meeting different display effects.

[0051] By arranging the second lamp board and the second through hole in one-to-one correspondence, and connecting the second lamp board to the connector through a flexible circuit board, individual control of each second lamp board is achieved. Each connector can independently transmit power and signals to the corresponding second lamp board, enabling each second lamp board to work independently and meeting different display effects.

[0052] In some embodiments of the present application,

[0053] The inclined section of the first lamp board is arranged close to the first through hole;

[0054] And / or, the lamp board inclined section of the second lamp board is arranged close to the second through hole.

[0055] The above solution has the following advantages or beneficial effects: it facilitates the connection between the second end of the flexible circuit board and the connector, simplifies the installation process of the flexible circuit board, and is more convenient and quick when maintenance or replacement of the flexible circuit board is required.

[0056] In some embodiments of the present application, along the thickness direction of the display device, the orthographic projection of the inclined section of the light panel on the surface where the back panel is located, along the second direction, extends for a length T that satisfies:

[0057]

[0058] Wherein, K is the distance between the lamp body at the outermost edge of the lamp board and the through hole.

[0059] The above solution has the following advantages or beneficial effects: it can effectively relieve the mechanical stress of the flexible circuit board and avoid bulging, while ensuring that the contact area between the lamp body and the lamp board is sufficient, which is conducive to the installation and fixation of the lamp body.

[0060] An embodiment of the present application provides a display device, including:

[0061] A display panel for displaying images;

[0062] a back plate, disposed on a side of the display panel facing away from a display side of the display panel;

[0063] The light board is set between the backboard and the display panel, and is connected to the backboard. The light board has:

[0064] The first side of the light board faces the display panel, and a lamp body is provided on the first side of the light board; the lamp body is used to provide light to the display panel;

[0065] The second side of the light board has a light board inclined section;

[0066] The third side of the light board; the third side of the light board is connected to the back board; the second end of the light board is away from the lamp body relative to the first end of the light board;

[0067] The distance between the inclined section of the light board and the display panel gradually increases from the first end to the second end of the light board;

[0068] The light panel tilt section includes:

[0069] The first end of the light board is close to the first surface of the light board along the thickness direction of the light board;

[0070] The second end of the light board is close to the third surface of the light board along the thickness direction of the light board;

[0071] In the thickness direction perpendicular to the lamp board, the second end of the lamp board faces away from the lamp body relative to the first end of the lamp board.

[0072] A flexible circuit board for bending around the lamp board, and at least the middle section of the flexible circuit board covers the inclined section of the lamp board.

[0073] A reflective sheet for reflecting the light of the lamp body.

[0074] The above solution has the following advantages or beneficial effects: By setting the inclined section of the lamp board, the bending angle of the flexible circuit board is reduced, the contact area between the flexible circuit board and the inclined section of the lamp board is increased, the mechanical stress of the flexible circuit board is reduced, and the problem of bulging at the connection between the flexible circuit board and the lamp board is avoided.

[0075] An embodiment of the present application provides a display device, including:

[0076] A display panel having a display side;

[0077] A backplane disposed on the side of the display panel away from the display side, and the backplane has:

[0078] A through hole extending in the thickness direction of the display device;

[0079] A first surface of the backplane facing the display panel; a lamp board is disposed on the first surface of the backplane;

[0080] A second surface of the backplane having an inclined section of the backplane; the inclined section of the backplane is disposed at the through hole;

[0081] A third surface of the backplane, the first surface and the third surface of the backplane are disposed opposite to each other in the thickness direction of the display device;

[0082] Wherein, the second surface of the backplane connects the first surface and the third surface of the backplane;

[0083] The inclined section of the backplane includes:

[0084] A first end of the backplane, and the first end of the backplane is disposed close to the first surface of the backplane in the thickness direction of the display device;

[0085] A second end of the backplane, and the second end of the backplane is disposed close to the third surface of the backplane in the thickness direction of the display device;

[0086] In the thickness direction perpendicular to the backplane, the second end of the backplane is closer to the center of the lamp board relative to the first end of the backplane;

[0087] A lamp board, and a lamp body is disposed on the side of the lamp board close to the display panel;

[0088] A flexible circuit board, and the flexible circuit board includes:

[0089] A first end of the flexible circuit board, connected to the lamp board;

[0090] The second end of the flexible circuit board is connected to the inclined section of the backplane;

[0091] The middle section of the flexible circuit board covers at least the end of the light board near the through hole;

[0092] The middle section of the flexible circuit board connects the first end and the second end of the flexible circuit board.

[0093] The reflective sheet is arranged on one side of the light board and the flexible circuit board facing the display panel.

[0094] The above solution has the following advantages or beneficial effects: By providing the inclined section of the backplane on the backplane, when the flexible circuit board is bent, the first end of the flexible circuit board is connected to the light board, the second end of the flexible circuit board is connected to the inclined section of the backplane, and the middle section of the flexible circuit board covers at least the end of the light board near the through hole. The inclined section of the backplane provides a smooth transition path for the bending of the flexible circuit board, reduces the bending angle of the flexible circuit board, avoids sharp bending of the flexible circuit board during the connection process, and reduces the mechanical stress generated by the bending of the flexible circuit board; At the same time, the setting of the inclined section of the backplane increases the connection area between the flexible circuit board and the backplane, avoids the problem of bulging at the connection between the flexible circuit board and the backplane and at the connection between the flexible circuit board and the light board, and further avoids the problem of the bulging affecting the light propagation uniformity of the lamp body.

[0095] In some embodiments of the present application, along the direction from the first end to the second end of the backplane, the distance between the inclined section of the backplane and the display panel gradually increases.

[0096] The above solution has the following advantages or beneficial effects: By setting the distance between the inclined section of the backplane and the display panel to gradually increase, the bending angle of the flexible circuit board is reduced, the stress generated by the bending of the flexible circuit board is reduced, and further the problem of the bulging affecting the light propagation uniformity of the lamp body is avoided.

[0097] In some embodiments of the present application, along the first direction, the inclined section of the backplane is arranged in the middle section of the second surface of the backplane; the first direction is perpendicular to the thickness direction of the display device;

[0098] The surface of the inclined section of the backplane facing the through hole forms a part of the inner wall of the through hole.

[0099] The above solution has the following advantages or beneficial effects: The second surface of the backplane includes a vertical section of the backplane and an inclined section of the backplane. Along the first direction, the two vertical sections of the backplane are arranged at opposite ends of the inclined section of the backplane. By arranging the inclined section of the backplane in the middle section of the second surface of the backplane, there is a step between the inclined section of the backplane and the vertical section of the backplane. The step plays a limiting role on the flexible circuit board, avoids the movement of the flexible circuit board, and avoids problems such as poor contact or open circuit caused by the movement of the flexible circuit board, improving the connection stability of the flexible circuit board.

[0100] In some embodiments of the present application, the inclined section of the backplane includes:

[0101] A first inclined section, which is connected to the first surface of the backplane;

[0102] A second inclined section, which is connected to the first inclined section;

[0103] A third inclined section, which is connected to the third surface of the backplane;

[0104] Wherein, the second inclined section connects the first inclined section and the third inclined section; the extending directions of the first inclined section and the third inclined section are parallel, and the extending direction of the second inclined section intersects with the extending directions of the first inclined section and the third inclined section;

[0105] The first inclined section includes:

[0106] A first inclined end, along the thickness direction of the display device, the first inclined end is arranged close to the first surface of the backplane;

[0107] A second inclined end, along the thickness direction of the display device, the second inclined end is arranged close to the third surface of the backplane; along the direction perpendicular to the thickness direction of the display device, the second inclined end is arranged closer to the center direction of the lamp board relative to the first inclined end;

[0108] Along the first inclined end to the second inclined end, the distance between the first inclined section and the display panel gradually increases.

[0109] The above solution has the following advantages or beneficial effects: By providing the first inclined section, the second inclined section and the third inclined section connected in sequence, more installation and fixing points are provided for the installation of the flexible circuit board, effectively increasing the contact area between the flexible circuit board and the inclined section of the backplane, facilitating the installation of the flexible circuit board, and improving the installation stability and reliability of the flexible circuit board.

[0110] In some embodiments of the present application, the surface of the inclined section of the backplane is uneven.

[0111] The above solution has the following advantages or beneficial effects: The surface of the inclined section of the backplane is a rough surface. The rough surface includes minute protrusions and depressions. The protrusions and depressions can increase the contact area between the flexible circuit board and the inclined section of the backplane, increase the friction between the flexible circuit board and the inclined section of the backplane, prevent the flexible circuit board from sliding or shifting during use, so as to further improve the connection stability between the flexible circuit board and the inclined section of the backplane, change the stress of the flexible circuit board, and avoid the problem of bulging between the flexible circuit board and the backplane, and between the flexible circuit board and the lamp board.

[0112] In some embodiments of the present application, the backplane has:

[0113] A backplane center line, along the second direction, the backplane center line is arranged in the middle section of the backplane;

[0114] Through holes are provided at the center line of the backplane; the number of through holes is multiple, and the multiple through holes are arranged at intervals in the first direction in sequence.

[0115] 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 pairwise.

[0116] The above solution has the following advantages or beneficial effects: By arranging multiple through holes at intervals in the first direction and setting the through holes at the center line of the backplane, the stress is evenly dispersed to avoid stress concentration at a certain position, thereby improving the overall structural stability of the backplane and enhancing the symmetry and balance of the backplane.

[0117] In some embodiments of the present application, the lamp board includes:

[0118] The first lamp board is arranged on the first side in the extending direction of the center line of the backplane along the second direction, and the number of the first lamp boards is multiple;

[0119] The second lamp board is arranged on the second side opposite to the first side in the extending direction of the center line of the backplane along the second direction; the number of the second lamp boards is multiple;

[0120] Among them, the multiple first lamp boards, the multiple through holes, and the multiple second lamp boards are arranged corresponding to each other.

[0121] The above solution has the following advantages or beneficial effects: By arranging the first lamp boards and the through holes in one-to-one correspondence and connecting the first lamp boards to the connectors through flexible circuit boards, individual control of each first lamp board is achieved. Each connector can independently transmit power and signals to the corresponding first lamp board, enabling each first lamp board to work independently and meeting different display effects. By arranging the second lamp boards and the through holes in one-to-one correspondence and connecting the second lamp boards to the connectors through flexible circuit boards, individual control of each second lamp board is achieved. Each connector can independently transmit power and signals to the corresponding second lamp board, enabling each second lamp board to work independently and meeting different display effects.

[0122] In some embodiments of the present application, the lamp board has:

[0123] The first surface of the lamp board faces the display panel, and lamp bodies are arranged on the first surface of the lamp board;

[0124] The second surface of the lamp board has an inclined section of the lamp board;

[0125] The third surface of the lamp board is connected to the first surface of the backplane;

[0126] Along the thickness direction of the display device, the first surface of the lamp board and the third surface of the lamp board are arranged opposite to each other, and the second surface of the lamp board connects the first surface of the lamp board and the third surface of the lamp board.

[0127] The above solution has the following advantages or beneficial effects: by providing the inclined section of the light board, the bending angle of the flexible circuit board is reduced, the contact area between the flexible circuit board and the inclined section of the light board is increased, the mechanical stress of the flexible circuit board is reduced, and the problem of bulging at the connection between the flexible circuit board and the light board is avoided;

[0128] In some embodiments of the present application, the light panel inclined section is connected to the back panel inclined section, and the light panel inclined section includes:

[0129] The first end of the light board is close to the first surface of the light board along the thickness direction of the display device;

[0130] The second end of the light board is close to the third surface of the light board along the thickness direction of the display device; the second end of the light board is away from the lamp body relative to the first end of the light board;

[0131] The distance between the inclined section of the light board and the display panel gradually increases from the first end to the second end of the light board.

[0132] The above scheme has the following advantages or beneficial effects: by setting the inclined section of the light board and setting the inclined section of the light board as the first end and the second end of the light board, the mechanical stress of the flexible circuit board is reduced, and the problem of bulging at the connection between the flexible circuit board and the light board is avoided.

[0133] In some embodiments of the present application, a chamfered structure is provided at the connection between the inclined section of the back panel and the inclined section of the light panel.

[0134] The above scheme has the following advantages or beneficial effects: the chamfer structure provides a smooth transition area for the flexible circuit board at the connection between the light board and the back panel, reducing the sharp bending of the flexible circuit board at the connection between the inclined section of the light board and the inclined section of the back panel; avoiding the problem of bulging at the connection, thereby maintaining the uniform propagation of light from the lamp body and ensuring the visual effect and performance of the display panel.

[0135] An embodiment of the present application provides a display device, including:

[0136] A display panel for displaying images;

[0137] The backplane is provided on the side of the display panel away from the display side of the display panel, and has:

[0138] a through hole extending along a thickness direction of the display device;

[0139] The first surface of the back panel faces the display panel; a light panel is provided on the first surface of the back panel;

[0140] The second surface of the back plate has a back plate inclined section; the back plate inclined section is arranged at the through hole;

[0141] The third surface of the back plate is arranged opposite to the first surface of the back plate and the third surface of the back plate along the thickness direction of the display device;

[0142] Wherein, the second surface of the back plate is connected to the first surface of the back plate and the third surface of the back plate;

[0143] The back plate tilt section includes:

[0144] The first end of the back plate is arranged close to the first surface of the back plate along the thickness direction of the display device;

[0145] The second end of the back plate is arranged close to the third surface of the back plate along the thickness direction of the display device;

[0146] Along the direction perpendicular to the thickness of the back plate, the second end of the back plate is closer to the center of the light board relative to the first end of the back plate;

[0147] A light board is provided with a light body on one side of the light board close to the display panel; the light body is used to provide light to the display panel;

[0148] A flexible circuit board, the flexible circuit board is used to bend around the light board and the back board, at least part of the flexible circuit board covers at least the end of the light board near the through hole; at least part of the flexible circuit board covers the inclined section of the back board;

[0149] Reflective sheet, used to reflect light.

[0150] By setting a back panel inclined section on the back panel, when the flexible circuit board is bent, the first end of the flexible circuit board is connected to the light board, the second end of the flexible circuit board is connected to the inclined section of the back panel, and the middle section of the flexible circuit board at least covers the end of the light board close to the through hole. The inclined section of the back panel provides a smooth transition path for the bending of the flexible circuit board, reduces the bending angle of the flexible circuit board, avoids sharp bending of the flexible circuit board during the connection process, and reduces the mechanical stress generated by the bending of the flexible circuit board; at the same time, the setting of the back panel inclined section increases the connection area between the flexible circuit board and the back panel, avoids bulging problems at the connection between the flexible circuit board and the back panel, and at the connection between the flexible circuit board and the light board, thereby avoiding the problem of bulging problems affecting the uniformity of light propagation of the lamp body.

[0151] An embodiment of the present application provides a display device, including:

[0152] a display panel having a display side;

[0153] A back plate is provided on a side of the display panel away from the display side, and is provided with a through hole;

[0154] The light board is arranged between the backboard and the display panel, and the light board and the backboard are connected; the light board is provided with a lamp body;

[0155] Flexible circuit boards, flexible circuit boards include:

[0156] The first end of the flexible circuit board is disposed on one side of the lamp board close to the display panel and is connected to the lamp board; the first end of the flexible circuit board has:

[0157] A first opening;

[0158] The second end of the flexible circuit board is disposed on the side of the lamp board facing away from the display panel;

[0159] The middle section of the flexible circuit board at least covers the end of the lamp board close to the through hole;

[0160] The middle section of the flexible circuit board connects the first end and the second end of the flexible circuit board;

[0161] A reflective sheet is disposed on the side of the flexible circuit board facing the display panel, and the reflective sheet has:

[0162] A second opening, and the second opening communicates with the first opening,

[0163] wherein a part of the lamp body passes through the first opening and the second opening and is connected to the lamp board; along the thickness direction of the display device, the positive projection of the hole edge of the first opening on the plane where the reflective sheet is located surrounds the outer periphery of the second opening.

[0164] The above solution has the following advantages or beneficial effects: The aperture of the second opening on the reflective sheet is not larger than the aperture size of the first opening of the flexible circuit board. The reflective sheet covers the hole edge of the flexible circuit board provided with the first opening, avoiding the reflection of light by the flexible circuit board. The light emitted by the lamp board is smoothly reflected by the reflective sheet, so as to reflect and utilize the light to the greatest extent, improve the uniformity of light propagation, and improve the brightness uniformity of the display device.

[0165] In some embodiments of the present application, the aperture of the first opening is not less than the aperture of the second opening.

[0166] And / or, the aperture of the second opening is not less than the diameter of the lamp body.

[0167] The above solution has the following advantages or beneficial effects: By setting the aperture of the first opening to be not less than the aperture of the second opening and setting the aperture of the second opening to be not less than the aperture of the lamp body, in this way, the light will not be blocked or shielded by the flexible circuit board and the side wall of the second opening, thereby improving the light efficiency and display effect and ensuring smooth light transmission.

[0168] By setting the aperture of the second opening of the reflective sheet to be not larger than the diameter of the first opening of the flexible circuit board, it is avoided that the light emitted by the lamp body is reflected by the flexible circuit board, minimizing the loss of light during transmission, ensuring that the light can effectively irradiate the display panel, and improving the light utilization rate.

[0169] In some embodiments of the present application, the centers of the first opening, the second opening, and the lamp body coincide.

[0170] The above solution has the following advantages or beneficial effects: It ensures that the light emitted by the lamp body can smoothly pass through the second opening and the first opening along the shortest path, reducing the scattering and loss of light, and improving the light efficiency and display effect.

[0171] In some embodiments of the present application, the radial dimension of the second opening near the lamp board end is not greater than the radial dimension of the second opening away from the lamp board end.

[0172] The above solution has the following advantages or beneficial effects: The second opening forms a gradually expanding channel, which helps to guide and concentrate the light emitted by the lamp body, enabling the light to pass through the second opening more effectively, reducing the scattering and loss of light, and improving the light efficiency and display effect.

[0173] In some embodiments of the present application, the radial dimension of the second opening near the lamp board end is equal to the radial dimension of the second opening away from the lamp board end.

[0174] The above solution has the following advantages or beneficial effects: The equal-diameter second opening design on the reflective sheet simplifies the design and manufacturing process, reduces complexity and manufacturing costs, and improves production efficiency and product consistency.

[0175] In some embodiments of the present application, the radial dimension of the first opening near the lamp board end is equal to the radial dimension of the first opening away from the lamp board end.

[0176] The above solution has the following advantages or beneficial effects: The flexible circuit board will not cause loss to the transmission of light, ensuring that the light can effectively irradiate the display panel and improving the light utilization rate. At the same time, the equal-diameter first opening design simplifies the design and manufacturing process, reduces complexity and manufacturing costs, and improves production efficiency and product consistency.

[0177] In some embodiments of the present application, the reflective sheet includes:

[0178] A first reflection section provided with a reflective sheet opening;

[0179] A second reflection section connected to the first reflection section, with a second opening provided on the second reflection section; along the thickness direction of the display device, the orthographic projection of the flexible circuit board on the plane where the lamp board is located covers the second reflection section;

[0180] Wherein, the aperture of the reflective sheet opening is not greater than the aperture of the second opening.

[0181] The above solution has the following advantages or beneficial effects: Considering the different reflectivities of the flexible circuit board and the reflector, it is necessary to consider the size relationship among the diameter of the lamp body when the flexible circuit board is provided, the aperture of the first opening on the flexible circuit board, and the aperture of the second opening on the reflector. The aperture of the opening on the reflector is smaller than the aperture of the second opening, so as to further reduce the loss of light when passing through the reflector, ensure that more light can be effectively utilized, and improve the light utilization rate.

[0182] In some embodiments of the present application, the ratio of the aperture of the first opening to the aperture of the second opening is greater than 1 and less than 1.2.

[0183] The above solution has the following advantages or beneficial effects: By controlling the ratio of the aperture of the first opening to the aperture of the second opening to be greater than 1 and less than 1.2, the transmission efficiency of light when passing through the opening is maximized, the occlusion and loss of light are reduced, and the light effect and display effect are improved.

[0184] In some embodiments of the present application, the backplane has:

[0185] The backplane center line, along the thickness direction perpendicular to the display device, is disposed in the middle section of the backplane;

[0186] Through holes, the through holes include:

[0187] The first through holes, along the thickness direction perpendicular to the display device, are disposed on the first side of the extending direction of the backplane center line, and the number of the first through holes is multiple;

[0188] The second through holes, which are not communicated with the first through holes; along the thickness direction perpendicular to the display device, the second through holes are disposed on the second side opposite to the first side of the extending direction of the backplane center line; the number of the second through holes is multiple

[0189] Wherein, the multiple first through holes and the multiple second through holes are arranged in one-to-one correspondence;

[0190] The lamp board includes:

[0191] The first lamp board, along the thickness direction perpendicular to the display device, multiple first lamp boards are disposed on the first side of the extending direction of the backplane center line, and the number of the first lamp boards is multiple;

[0192] The second lamp board, along the thickness direction perpendicular to the display device, multiple second lamp boards are disposed on the second side opposite to the first side of the extending direction of the backplane center line; the number of the second lamp boards is multiple;

[0193] Wherein, the multiple first lamp boards and the multiple first through holes are arranged in one-to-one correspondence; the multiple second lamp boards and the multiple second through holes are arranged in one-to-one correspondence.

[0194] The above scheme has the following advantages or beneficial effects: by arranging multiple through holes at intervals along the first direction and arranging the through holes at the center line of the backplane, the stress is evenly dispersed to avoid stress concentration at a certain position, thereby improving the overall structural stability of the backplane and improving the symmetry and balance of the backplane.

[0195] The first and second through-holes are symmetrically positioned on either side of the backplane's centerline. This design evenly distributes stress, preventing it from concentrating in a single location and improving the backplane's overall structural stability. Furthermore, the first and second through-holes allow for the passage of flexible printed circuit boards, enhancing the backplane's cleanliness and reliability.

[0196] By setting a one-to-one correspondence between the first light boards and the through holes, and connecting the first light boards to the connectors via a flexible circuit board, each first light board can be individually controlled. Each connector can independently transmit power and signals to the corresponding first light board, allowing each first light board to operate independently and meet different display effects. By setting a one-to-one correspondence between the second light boards and the through holes, and connecting the second light boards to the connectors via a flexible circuit board, each second light board can be individually controlled. Each connector can independently transmit power and signals to the corresponding second light board, allowing each second light board to operate independently and meet different display effects.

[0197] An embodiment of the present application provides a display device, including:

[0198] A display panel for displaying images;

[0199] A back plate is provided on a side of the display panel away from the display side of the display panel, and a through hole is provided on the back plate;

[0200] The light board is arranged between the backboard and the display panel, and the light board and the backboard are connected; the light board is provided with a lamp body;

[0201] Flexible circuit boards, flexible circuit boards include:

[0202] The first end of the flexible circuit board is arranged on a side of the light board close to the display panel and is connected to the light board;

[0203] The first end of the flexible circuit board has:

[0204] first opening;

[0205] The second end of the flexible circuit board is arranged on a side of the light board facing away from the display panel;

[0206] The middle section of the flexible circuit board at least covers the end portion of the light board close to the through hole;

[0207] The middle section of the flexible circuit board connects the first end of the flexible circuit board and the second end of the flexible circuit board;

[0208] Reflector, used to reflect light from the lamp body;

[0209] The reflective sheet has:

[0210] a second opening, the second opening being connected to the first opening;

[0211] Part of the lamp body passes through the first opening and the second opening and is connected to the lamp board; along the thickness direction of the display device, the orthographic projection of the edge of the first opening on the surface where the reflective sheet is located is used to surround the outer periphery of the second opening.

[0212] The above scheme has the following advantages or beneficial effects: the aperture of the second opening on the reflective sheet is not larger than the aperture size of the first opening of the flexible circuit board, and the reflective sheet covers the edge of the hole where the first opening is provided on the flexible circuit board to prevent light from being reflected by the flexible circuit board. The light emitted by the light board is smoothly reflected by the reflective sheet to maximize the reflection and utilization of light, thereby improving the uniformity of light propagation and improving the brightness uniformity of the display device.

[0213] An embodiment of the present application provides a display device, including:

[0214] a display panel having a display side;

[0215] A back plate is provided on a side of the display panel away from the display side, and is provided with a through hole;

[0216] The light board is arranged between the backboard and the display panel, and the light board and the backboard are connected; the light board is provided with a lamp body;

[0217] Flexible circuit boards, flexible circuit boards include:

[0218] The first end of the flexible circuit board is arranged on a side of the light board close to the display panel and is connected to the light board;

[0219] The first end of the flexible circuit board has:

[0220] first opening;

[0221] The second end of the flexible circuit board is arranged on a side of the light board facing away from the display panel;

[0222] The middle section of the flexible circuit board at least covers the end portion of the light board close to the through hole;

[0223] The middle section of the flexible circuit board connects the first end of the flexible circuit board and the second end of the flexible circuit board;

[0224] A reflective sheet is provided on a side of the flexible circuit board facing the display panel;

[0225] The reflective sheet has:

[0226] a second opening, the second opening being connected to the first opening;

[0227] Part of the lamp body is connected to the lamp board through the first opening, the second opening;

[0228] The first colloid partially covers the first end of the flexible circuit board, partially fills the first opening, and wraps the flexible circuit board and the light board.

[0229] The above solution has the following advantages or beneficial effects: by providing the first colloid and partially covering the first end of the flexible circuit board, and partially filling the first opening, the mechanical connection strength between the flexible circuit board and the light board is improved, thereby enhancing the stability of the connection between the light board and the flexible circuit board. This design effectively reduces the risk of separation between the flexible circuit board and the light board due to prolonged use.

[0230] In some embodiments of the present application, the flexible circuit board includes:

[0231] The first board section is arranged on the side of the light board facing the display panel.

[0232] The second plate segment is connected to the end of the light board close to the through hole;

[0233] The third board segment is connected to a side of the light board facing away from the display panel;

[0234] The second plate segment connects the first plate segment and the third plate segment.

[0235] The above solution has the following advantages or beneficial effects: The first board segment is connected to the light board, ensuring the stability of the electrical and mechanical connection between the first board segment and the light board. The second board segment at least partially covers the end of the light board near the through-hole. The third board segment is positioned on the side of the back panel facing away from the display panel. In this way, by bending the flexible printed circuit board, circuits can be spanned across both sides of the light board, effectively utilizing space.

[0236] In some embodiments of the present application, along the thickness direction of the display device, the orthographic projection of the first colloid on the surface where the light board is located covers the first board segment.

[0237] The above solution has the following advantages or beneficial effects: the first colloid forms a covering layer around the first plate segment. This covering layer provides additional mechanical support, enhances the stability of the connection between the first plate segment and the light board, and prevents the connection between the first plate segment and the light board from loosening or breaking due to vibration or impact during use.

[0238] In some embodiments of the present application, the first colloid includes a plurality of colloid segments;

[0239] The first plate section includes a first plate body, a first side, a second side, a third side and a fourth side, wherein the first side, the second side, the third side and the fourth side are connected end to end in sequence;

[0240] At least four colloid segments respectively cover the first side, the second side, the third side, and the fourth side in a one-to-one correspondence; at least part of the colloid segments are filled in the first opening.

[0241] The above solution has the following advantages or beneficial effects: Multiple colloid segments of the first colloid respectively cover the four sides of the first plate segment, forming a complete covering structure. This covering structure can provide additional mechanical support, enhance the connection stability between the first plate segment and the lamp board, and prevent loosening or breaking of the connection caused by vibration or impact during use.

[0242] In some embodiments of the present application, a lamp board pad is provided on the side of the lamp board facing away from the back board;

[0243] A circuit board pad is provided on the side of the first plate segment close to the lamp board;

[0244] The lamp board and the flexible circuit board are electrically connected through the lamp board pad and the circuit board pad.

[0245] The above solution has the following advantages or beneficial effects: The lamp board pad is used to provide electrical connection points, and the circuits on the lamp board are used to electrically connect the various lamp bodies on the lamp board to form a complete circuit. The circuit board pad on the flexible circuit board is used to make electrical connection with the lamp board pad on the lamp board, thereby realizing signal and power transmission between the flexible circuit board and the lamp board.

[0246] In some embodiments of the present application, the lamp board pad and the circuit board pad are connected by a second colloid.

[0247] The above solution has the following advantages or beneficial effects: It realizes the electrical connection between the lamp board pad and the circuit board pad during use, and ensures the connection strength between the lamp board and the flexible circuit board.

[0248] In some embodiments of the present application, the first colloid includes an ultraviolet light-curable adhesive or a transparent acrylate adhesive.

[0249] And / or, the second colloid includes an anisotropic conductive adhesive.

[0250] The above solution has the following advantages or beneficial effects: Ultraviolet curable adhesives usually have high transparency after curing and will not affect the propagation of light from the lamp body. In addition, the shrinkage rate of ultraviolet curable adhesives during curing is relatively low, which can maintain the dimensional stability of the bonding part, reduce stress concentration and deformation. Transparent acrylate adhesives usually have high transparency after curing and will not affect the propagation of light from the lamp body. Transparent acrylate adhesives usually have a relatively fast curing speed, which can improve production efficiency.

[0251] In some embodiments of the present application, the thickness of the first colloid is greater than 40 μm and less than 50 μm.

[0252] The above solution has the following advantages or beneficial effects: it improves the connection strength between the flexible circuit board and the lamp board, ensures the connection stability between the flexible circuit board and the lamp board, and at the same time avoids the excessive thickness of the backlight module.

[0253] In some embodiments of the present application, the backplane has:

[0254] The center line of the backplane is arranged in the middle section of the backplane along the thickness direction perpendicular to the display device.

[0255] Through holes, and the through holes include:

[0256] The first through hole is arranged on the first side of the extension direction of the backplane center line along the thickness direction perpendicular to the display device, and the number of the first through holes is multiple.

[0257] The second through hole is not communicated with the first through hole; along the thickness direction perpendicular to the display device, the second through hole is arranged on the second side opposite to the first side of the extension direction of the backplane center line; the number of the second through holes is multiple

[0258] Wherein, the multiple first through holes and the multiple second through holes are arranged in one-to-one correspondence.

[0259] The lamp board includes:

[0260] The first lamp board is arranged on the first side of the extension direction of the backplane center line along the thickness direction perpendicular to the display device, and the number of the first lamp boards is multiple.

[0261] The second lamp board is arranged on the second side opposite to the first side of the extension direction of the backplane center line along the thickness direction perpendicular to the display device; the number of the second lamp boards is multiple;

[0262] Wherein, the multiple first lamp boards and the multiple first through holes are arranged in one-to-one correspondence; the multiple second lamp boards and the multiple second through holes are arranged in one-to-one correspondence.

[0263] The above solution has the following advantages or beneficial effects: The first through hole and the second through hole are respectively arranged on both sides of the extension direction of the backplane center line, forming a symmetric distribution. This design can evenly disperse stress, avoid stress concentration at a certain position, thereby improving the overall structural stability of the backplane. At the same time, the first through hole and the second through hole are used for the flexible circuit board to pass through, improving the neatness and reliability of the backplane.

[0264] By setting a one-to-one correspondence between the first light boards and the through holes, and connecting the first light boards to the connectors via a flexible circuit board, each first light board can be individually controlled. Each connector can independently transmit power and signals to the corresponding first light board, allowing each first light board to operate independently and meet different display effects. By setting a one-to-one correspondence between the second light boards and the through holes, and connecting the second light boards to the connectors via a flexible circuit board, each second light board can be individually controlled. Each connector can independently transmit power and signals to the corresponding second light board, allowing each second light board to operate independently and meet different display effects.

[0265] An embodiment of the present application provides a display device, the display device comprising:

[0266] A display panel for displaying images;

[0267] A back plate is provided on a side of the display panel away from the display side of the display panel, and a through hole is provided on the back plate;

[0268] The light board is arranged between the backboard and the display panel, and the light board and the backboard are connected; the light board is provided with a lamp body;

[0269] Flexible circuit board; flexible circuit board includes:

[0270] The first end of the flexible circuit board is arranged on a side of the light board close to the display panel and is connected to the light board;

[0271] The first end of the flexible circuit board has:

[0272] first opening;

[0273] The second end of the flexible circuit board is arranged on a side of the light board facing away from the display panel;

[0274] The middle section of the flexible circuit board at least covers the end portion of the light board close to the through hole;

[0275] The middle section of the flexible circuit board connects the first end of the flexible circuit board and the second end of the flexible circuit board;

[0276] A reflective sheet is provided on a side of the flexible circuit board facing the display panel;

[0277] The reflective sheet has:

[0278] a second opening, the second opening being connected to the first opening;

[0279] Part of the lamp body is connected to the lamp board through the first opening, the second opening;

[0280] The first colloid is used to wrap the flexible circuit board and the light board.

[0281] The above solution has the following advantages or beneficial effects: by providing the first colloid and partially covering the first end of the flexible circuit board, and partially filling the first opening, the mechanical connection strength between the flexible circuit board and the light board is improved, thereby enhancing the stability of the connection between the light board and the flexible circuit board. This design effectively reduces the risk of separation between the flexible circuit board and the light board due to prolonged use.

[0282] An embodiment of the present application provides a display device, including:

[0283] a display panel having a display side;

[0284] A back plate is provided on a side of the display panel away from the display side, and is provided with a through hole;

[0285] The light board is arranged between the backboard and the display panel, and the light board and the backboard are connected; the light board is provided with a lamp body;

[0286] The light board includes:

[0287] Light board body area,

[0288] The binding area is connected to the light board body area and is arranged near the through hole relative to the light board body area along a thickness direction perpendicular to the display device;

[0289] Flexible circuit boards, flexible circuit boards include:

[0290] The first end of the flexible circuit board is disposed in the binding area and connected to the binding area; the first end of the flexible circuit board is provided with a first opening;

[0291] The second end of the flexible circuit board is arranged on a side of the light board facing away from the display panel;

[0292] The middle section of the flexible circuit board at least covers the end portion of the light board close to the through hole;

[0293] Wherein, the middle section of the flexible circuit board connects the first end of the flexible circuit board and the second end of the flexible circuit board;

[0294] A reflective sheet is provided on a side of the flexible circuit board facing the display panel;

[0295] The reflective sheet has:

[0296] The second opening; the first opening and the second opening are connected, and a portion of the lamp body is connected to the lamp board through the first opening and the second opening;

[0297] The first colloid includes:

[0298] a first colloid segment, wherein a portion of the first colloid segment covers the first end of the flexible circuit board;

[0299] The second colloid segment is connected to the first colloid segment, and the second colloid segment covers a part of the lamp board body area.

[0300] The above solution has the following advantages or beneficial effects: By setting the first colloid as the first colloid segment and the second colloid segment, the bonding area between the flexible circuit board and the lamp board is improved, and the connection strength between the flexible circuit board and the lamp board body area is enhanced, preventing the connection between the flexible circuit board and the lamp board from loosening or disconnecting due to external force, improving the connection stability between the lamp board and the flexible circuit board, increasing the service life of the display device, and improving the performance of the display device.

[0301] An embodiment of the present application provides a display device, including:

[0302] A display panel having a display side;

[0303] A diffusion plate disposed on a side of the display panel facing away from the display side;

[0304] A backplane assembly having a backplane cavity with one end open, the opening facing the display panel, and the backplane assembly is disposed on a side of the diffusion plate facing away from the display panel; the backplane assembly has:

[0305] An installation surface provided on a side of the installation surface close to the opening; the installation surface includes:

[0306] A first end of the installation surface, along the thickness direction of the display device, the first end of the installation surface is close to the display panel;

[0307] A second end of the installation surface, along the thickness direction of the display device, the second end of the installation surface faces away from the display panel;

[0308] Along the direction perpendicular to the thickness direction of the display device, the second end of the installation surface is closer to the backplane cavity relative to the first end of the installation surface;

[0309] A lamp board located in the backplane cavity, and the lamp board is connected to the backplane assembly; the lamp board has:

[0310] A lamp body disposed on a side of the lamp board close to the diffusion plate;

[0311] A driving chip disposed on a side of the lamp board close to the diffusion plate; the driving chip is used to control the working state of the lamp body;

[0312] A support portion disposed on the driving chip, the first end of the support portion covers the driving chip, and the second end of the support portion contacts the diffusion plate.

[0313] The above - mentioned solution has the following advantages or beneficial effects: During the installation process of the diffusion plate, the diffusion plate will undergo pre - deformation towards the back - plate cavity of the back - plate assembly. The diffusion plate bends towards the back - plate cavity. And the pre - deformation can change the mechanical equilibrium state of the diffusion plate, making it easier to reach the equilibrium state during operation. By setting the installation surface, the diffusion plate will undergo pre - deformation during installation. In this way, after installation, the diffusion plate is in an equilibrium position close to the working state. Thus, during the use of the display device, the additional deformation and stress of the diffusion plate caused by external forces are reduced.

[0314] In some embodiments of the present application, along the direction from the first end to the second end of the installation surface, the distance between the installation surface and the display panel gradually increases.

[0315] The above - mentioned solution has the following advantages or beneficial effects: By setting the installation surface, along the direction from the first end to the second end of the installation surface, the distance between the installation surface and the display panel gradually increases; in this way, the diffusion plate will undergo pre - deformation during installation. In this way, after installation, the diffusion plate is in an equilibrium position close to the working state. Thus, during the use of the display device, the additional deformation and stress of the diffusion plate caused by external forces are reduced.

[0316] In some embodiments of the present application, the back - plate assembly includes:

[0317] The back - plate; the back - plate includes:

[0318] The back - plate bottom plate, on which a lamp body is provided;

[0319] The back - plate side plates, the back - plate bottom plate and the back - plate side plates surround to form a back - plate cavity, and the diffusion plate and the display panel are arranged at the opening of the back - plate cavity; an installation surface is formed at the end of the back - plate side plate close to the display side.

[0320] The above - mentioned solution has the following advantages or beneficial effects: By setting the installation surface on the side of the back - plate side plate close to the opening and installing the end of the diffusion plate on the installation surface, the diffusion plate undergoes pre - bending during installation. Since the installation surface is inclined towards the direction close to the back - plate cavity relative to the plane where the display panel is located, such a design avoids the problem that the diffusion plate deforms towards the display panel during use, improves the stability of the optical distance in the display device, and further improves the display effect of the display device.

[0321] In some embodiments of the present application, the back - plate side plates include a top - side side plate, a right - side side plate, a bottom - side side plate and a left - side side plate that are connected in sequence, and the left - side side plate is connected to the top - side side plate;

[0322] Along the first direction, the left - side side plate and the right - side side plate are oppositely arranged; along the second direction, the top - side side plate and the bottom - side side plate are oppositely arranged;

[0323] The thickness direction of the display device is parallel to the third direction, and the first, second, and third directions are perpendicular to each other in pairs.

[0324] At the ends of the top side side plate and the bottom side side plate close to the diffusion plate, a first mounting surface is formed; the first mounting surface includes:

[0325] A first mounting end, along the thickness direction of the display device, the first mounting end is close to the display panel;

[0326] A second mounting end, along the thickness direction of the display device, the second mounting end faces away from the display panel; the second mounting end is closer to the backplane cavity relative to the first mounting end.

[0327] 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.

[0328] At the ends of the left side side plate and the right side side plate close to the diffusion plate, a second mounting surface is formed; the second mounting surface includes:

[0329] A third mounting end, along the thickness direction of the display device, the third mounting end is arranged close to the display panel.

[0330] A fourth mounting end, along the thickness direction of the display device, the fourth mounting end faces away from the display panel; the fourth mounting end is closer to the backplane cavity relative to the third mounting end.

[0331] 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;

[0332] The first mounting surface and the second mounting surface form a mounting surface.

[0333] The above solution has the following advantages or beneficial effects: Each end of the diffusion plate is pre-bent under the guidance of the mounting surface, increasing the contact area between the diffusion plate and the backplane side plate, thereby improving the structural stability of the diffusion plate, avoiding deformation of the diffusion plate during use, improving the stability of the optical distance in the display device, and improving the display effect of the display device.

[0334] In some embodiments of the present application, the backplane assembly further includes a surrounding side plate;

[0335] The first end of the surrounding side plate is connected to the backplane side plate, and the second end of the surrounding side plate extends towards the direction close to the display panel.

[0336] The above solution has the following advantages or beneficial effects: It avoids light leakage from the edge of the diffusion plate, ensures that the light is concentrated in the display area, and improves the contrast and clarity of the display effect. In addition, the connection between the surrounding side plate and the backplane side plate increases the structural stability of the entire backplane assembly.

[0337] In some embodiments of the present application, the backplane assembly further includes a middle frame, which is disposed on the side of the backplane close to the diffusion plate; the middle frame is connected to the backplane;

[0338] An installation surface is provided on the side of the middle frame close to the opening.

[0339] The above solution has the following advantages or beneficial effects: Such a design enables the middle frame to directly support and fix the diffusion plate. The combination of the backplane and the middle frame provides higher structural stability. The backplane provides the overall mechanical strength, while the middle frame provides precise support for the diffusion plate.

[0340] In some embodiments of the present application, the support portion includes a dispensing layer, and both ends of the dispensing layer are respectively connected to the driving chip and the diffusion plate; the end of the dispensing layer close to the diffusion plate does not exceed the end of the installation surface close to the lamp board;

[0341] The display device further includes a reflector, which is disposed on the side of the lamp board facing the display panel.

[0342] The above solution has the following advantages or beneficial effects: The end of the dispensing layer close to the diffusion plate does not exceed the end of the installation surface close to the lamp board. This design ensures that the dispensing layer does not interfere with the installation of the diffusion plate and the light propagation path, optimizes the installation space, and improves the installation efficiency.

[0343] In some embodiments of the present application, the backplane bottom plate, the backplane side plate, and the enclosure side plate are integrally formed parts.

[0344] The above solution has the following advantages or beneficial effects: By setting the backplane bottom plate, the backplane side plate, and the enclosure side plate as integrally formed parts, since there are no splicing or welding points, the overall structure of the backplane assembly is more robust, reducing the quality differences caused by splicing or welding, and improving the structural strength and stability of the backplane assembly.

[0345] In some embodiments of the present application, the diffusion plate is connected to the installation surface through a connecting adhesive.

[0346] The above solution has the following advantages or beneficial effects: The connecting adhesive can provide a strong adhesive force to ensure that the diffusion plate is firmly fixed on the installation surface, preventing loosening or falling off. The high-transparency connecting adhesive can ensure that the light is not disturbed when passing through the bonding layer, maintaining the purity and uniformity of the light, and improving the display effect. Using the connecting adhesive can simplify the installation process, reduce the use of mechanical fasteners, and improve the installation efficiency.

[0347] In some embodiments of the present application,

[0348] The included angle range between the direction from the first end to the second end of the installation surface and the plane where the display panel is located is greater than 5° and less than 30°;

[0349] And / or, along the thickness direction of the display device, the orthographic projection of the mounting surface on the surface where the display panel is located has an extension length range greater than 3 mm and less than 5 mm along the thickness direction perpendicular to the display device.

[0350] The above scheme has the following advantages or beneficial effects: the angle range formed by the plane where the display panel is located in the direction from the first end of the mounting surface to the second end of the mounting surface is set to be greater than 5° and equal to 30°. This angle range can form an appropriate support angle between the diffuser plate and the mounting surface, avoid deformation of the diffuser plate during use, and ensure the structural stability and durability of the diffuser plate.

[0351] The projection of the mounting surface onto the display panel should extend from less than 3mm to greater than 5mm perpendicular to the thickness of the display device. This ensures sufficient contact area between the diffuser and the mounting surface of the backplane assembly, ensuring a secure fit. This also minimizes the backplane assembly's impact on light transmission, preventing light spots and dark areas, and improving display uniformity.

[0352] An embodiment of the present application provides a display device, including:

[0353] A display panel for displaying images;

[0354] a diffusion plate, disposed on a side of the display panel facing away from a display side of the display panel;

[0355] A back plate assembly having a back plate cavity with an opening at one end, the opening facing the display panel, and the back plate assembly is arranged on a side of the diffuser away from the display panel;

[0356] The backplane assembly has:

[0357] A mounting surface, the mounting surface being arranged on a side close to the opening;

[0358] Mounting surfaces include:

[0359] A first end of the mounting surface is close to the display panel along the thickness direction of the display device;

[0360] a second end of the mounting surface, the second end of the mounting surface being away from the display panel along the thickness direction of the display device;

[0361] Along a direction perpendicular to the thickness of the display device, the second end of the mounting surface is closer to the back panel cavity relative to the first end of the mounting surface;

[0362] The light board is located in the back panel cavity, and the light board and the back panel assembly are connected;

[0363] The light board has:

[0364] The lamp body is arranged on the side of the lamp board close to the diffuser plate;

[0365] A driving chip, which is disposed on the side of the lamp board close to the diffusion plate; the driving chip is used to control the working state of the lamp body;

[0366] A supporting part, which is used to support the diffusion plate.

[0367] The above solution has the following advantages or beneficial effects: Since the distance between the mounting surface and the display panel gradually increases in the direction from the first end to the second end of the mounting surface; that is to say, the mounting surface is inclined. In this way, during the installation of the diffusion plate, the diffusion plate will undergo pre-deformation towards the backplane cavity of the backplane assembly. The diffusion plate bends towards the backplane cavity. The pre-deformation can change the mechanical equilibrium state of the diffusion plate, making it easier to reach the equilibrium state during operation. By setting the mounting surface, the diffusion plate undergoes pre-deformation during installation. In this way, the diffusion plate is in an equilibrium position close to the working state after installation, and during the use of the display device, the additional deformation and stress of the diffusion plate caused by external forces are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0368] In order to more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0369] Figure 1 It is a schematic structural diagram of a display device provided by an embodiment of the present application;

[0370] Figure 2 It is a schematic structural diagram of the backlight module of the display device provided by an embodiment of the present application from a first perspective Figure 1 ;

[0371] Figure 3 It is a schematic structural diagram of the backlight module of the display device provided by an embodiment of the present application from a second perspective;

[0372] Figure 4 It is a schematic structural diagram of the backplane of the display device provided by an embodiment of the present application from a first perspective Figure 1 ;

[0373] Figure 5 It is a schematic structural diagram of the backplane of the display device provided by an embodiment of the present application from a first perspective Figure 2 ;

[0374] Figure 6 It is a schematic structural diagram of the backplane and the lamp board of the display device provided by an embodiment of the present application;

[0375] Figure 7 It is a schematic structural diagram of the backplane of the display device provided by an embodiment of the present application from a first perspective Figure 3;

[0376] Figure 8 It is a schematic structural diagram of the second perspective of the backplane of the display device provided by the embodiment of the present application;

[0377] Figure 9 It is a schematic structural diagram of the third perspective of the backlight module of the display device provided by the embodiment of the present application Figure 1 ;

[0378] Figure 10 It is a schematic structural diagram of the third perspective of the backlight module of the display device provided by the embodiment of the present application Figure 2 ;

[0379] Figure 11 It is Figure 10 an enlarged view of area A;

[0380] Figure 12 It is a schematic structural diagram of the backplane of the display device provided by the embodiment of the present application;

[0381] Figure 13 It is a schematic structural diagram of the first perspective of the backlight module of the display device provided by the embodiment of the present application Figure 2 ;

[0382] Figure 14 It is a schematic structural diagram of the third perspective of the backlight module of the display device provided by the embodiment of the present application Figure 3 ;

[0383] Figure 15 It is Figure 14 an enlarged view of area B;

[0384] Figure 16 It is a schematic structural diagram of the first perspective of the lamp board of the display device provided by the embodiment of the present application Figure 1 ;

[0385] Figure 17 It is a schematic structural diagram of the first perspective of the lamp board of the display device provided by the embodiment of the present application Figure 2 ;

[0386] Figure 18 It is a schematic structural diagram of the second perspective of the lamp board of the display device provided by the embodiment of the present application;

[0387] Figure 19 It is a schematic structural diagram of the lamp board and the flexible circuit board of the display device provided by the embodiment of the present application;

[0388] Figure 20 It is a schematic structural diagram of the third perspective of the backlight module of the display device provided by the embodiment of the present application Figure 4 ;

[0389] Figure 21Schematic diagram of the structure of the backlight module of the display device provided by the embodiment of the present application from the third perspective Figure 5 ;

[0390] Figure 22 Schematic diagram of the structure of the lamp board, flexible circuit board and reflector of the display device provided by the embodiment of the present application;

[0391] Figure 23 Schematic diagram of the structure of the lamp board and reflector of the display device provided by the embodiment of the present application ​ ;

[0392] ​ Schematic diagram of the structure of the lamp board and reflector of the display device provided by the embodiment of the present application ​ ;

[0393] ​ Schematic diagram of the structure of the lamp board and reflector of the display device provided by the embodiment of the present application ​ ;

[0394] ​ Schematic diagram of the structure of the reflector of the display device provided by the embodiment of the present application;

[0395] ​ Schematic diagram of the structure of the backlight module of the display device provided by the embodiment of the present application from the second perspective ​ ;

[0396] ​ Schematic diagram of the structure of the backlight module of the display device provided by the embodiment of the present application from the second perspective ​ ;

[0397] ​ Schematic diagram of the structure of the lamp board and flexible circuit board of the display device provided by the embodiment of the present application;

[0398] ​ Schematic diagram of the structure of the lamp board, flexible circuit board and first colloid provided by the embodiment of the present application ​ ;

[0399] ​ Schematic diagram of the structure of the lamp board, flexible circuit board and first colloid provided by the embodiment of the present application ​ ;

[0400] ​ Schematic diagram of the structure of the lamp board, flexible circuit board and first colloid provided by the embodiment of the present application ​ ;

[0401] ​ Schematic diagram of the structure of the backplane assembly of the display device provided by the embodiment of the present application ​ ;

[0402] ​ Schematic diagram of the backplane assembly of the display device provided by the embodiment of the present application ​ ;

[0403] ​ Schematic diagram of the backplane assembly of the display device provided by the embodiment of the present application ​ ;

[0404] ​ is ​ Schematic diagram of the structure of area C in

[0405] Description of reference numerals:

[0406] 100: Display panel;

[0407] 200: Backplane; 200a: Through hole; 200b: First through hole; 200c: Second through hole; 200d: Backplane center line; 210: First surface of the backplane; 220: Second surface of the backplane; 221: Inclined section of the backplane; 222: First inclined section; 223: Second inclined section; 224: Third inclined section; 230: Third surface of the backplane; 240: Backplane bottom plate; 250: Backplane side plate; 251: Top side side plate; 252: Bottom side side plate; 253: Left side side plate; 254: Right side side plate; 260: Middle frame; 270: Mounting surface;

[0408] 300: Lamp board; 310: First surface of the lamp board; 311: Bonding area; 312: Lamp board body area; 320: Second surface of the lamp board; 321: Inclined section of the lamp board; 322: Vertical section of the lamp board; 330: Third surface of the lamp board; 340: Lamp body; 350: First lamp board; 360: Second lamp board; 370: Lamp board pad;

[0409] 400: Flexible circuit board; 400a: First opening; 410: First board section; 420: Second board section; 430: Third board section; 440: Circuit board pad;

[0410] 500: Reflector; 510: First reflection section; 511: Reflector opening; 520: Second reflection section; 521: Second opening;

[0411] 600: Diffusion plate;

[0412] 700: Connector;

[0413] 800: Chamfer structure;

[0414] 900: First colloid; 910: First colloid section; 920: Second colloid section; 930: Colloid section. Detailed implementation manners

[0415] A display device is an electronic device used to present visual information, capable of converting digital signals into visible images or text for users to view and interact with.

[0416] In the prior art, a display device includes a display panel and a backlight module. The backlight module includes a direct-lit backlight module. When the direct-lit backlight module is applied in a large-size display screen or a video wall, multiple backlight modules usually need to be spliced together to form an integral display area. The direct-lit backlight module includes a back plate, a lamp board, a flexible circuit board, and a reflector. Light sources, such as LED light sources, are arranged on the lamp board, and the light sources are distributed on the lamp board to provide light for the display panel. The flexible circuit board is bent at the lamp board to connect the bonding area on the lamp board and the connector located on the other side of the lamp board, so as to reduce the seam of the direct-lit backlight module.

[0417] However, when the flexible circuit board is bent at the lamp board, mechanical stress is generated inside the flexible circuit board, which will cause bulges at the connection between the flexible circuit board and the lamp board, and the bulges will hinder the normal propagation of light on the lamp board. In addition, due to the different reflectivities of the reflector and the flexible circuit board, there is a problem of poor brightness uniformity in the bonding area between the flexible circuit board and the lamp board in the existing display device. In addition, the pads on the flexible circuit board and the pads on the lamp board are connected by conductive adhesive. During the use of the display device, heat may be generated at the connection between the lamp board and the circuit board pads, and the conductive adhesive may age, reducing the connection strength between the lamp board and the flexible circuit board. In addition, there is a problem of unstable optical distance in the display device. Therefore, the existing display device has a problem of poor display effect.

[0418] In view of this, an embodiment of the present application provides a display device, including a display panel, a back plate, a lamp board, a flexible circuit board, a reflector, and a diffuser plate. By providing a 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 to the lamp board, the second end of the flexible circuit board is connected to the back plate inclined section, and at least the middle section of the flexible circuit board covers the end of the lamp board 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 sharp bending during the connection of the flexible circuit board, reduces the mechanical stress generated by the bending of the flexible circuit board. At the same time, the setting of the back plate inclined section increases the connection area between the flexible circuit board and the back plate, avoiding the problem of bulges at the connection between the flexible circuit board and the back plate and at the connection between the flexible circuit board and the lamp board, and further avoiding the problem that the bulges affect the light propagation uniformity of the lamp body.

[0419] By setting an inclined section of the light board on the light board, the inclined section of the light board 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 light board and the inclined section of the light board, thereby reducing the bending angle of the flexible circuit board, avoiding sharp bending of the flexible circuit board during the connection process, reducing the mechanical stress generated by the bending of the flexible circuit board, avoiding the problem of bulging at the connection between the flexible circuit board and the light board, and thus avoiding the problem of bulging problem affecting the uniformity of light propagation of the lamp body.

[0420] In the display device provided by the embodiment of the present application, along the thickness direction of the display device, the orthographic projection of the edge of the first opening on the surface where the reflective sheet is located is arranged around the periphery of the second opening. In this way, the aperture of the second opening on the reflective sheet is not larger than the aperture size of the first opening of the flexible circuit board. The reflective sheet covers the edge of the hole where the first opening is provided on the flexible circuit board to prevent light from being reflected by the flexible circuit board. The light emitted by the light board is smoothly reflected by the reflective sheet to maximize the reflection and utilization of light, improve the uniformity of light propagation, and improve the brightness uniformity of the display device.

[0421] By providing a first colloid, partially covering the first end of the flexible circuit board, and partially filling the first opening with the first colloid, the mechanical connection strength between the flexible circuit board and the light board can be significantly enhanced. This design effectively reduces the risk of separation between the flexible circuit board and the light board due to prolonged use, and improves the stability of the connection between the light board and the flexible circuit board. The use of the first colloid not only enhances the connection strength between the light board and the flexible circuit board, but also provides external protection for the light board and the flexible circuit board, preventing environmental factors (such as moisture, dust, etc.) from corroding the connection between the light board and the flexible circuit board, thereby improving the reliability and service life of the flexible circuit board and the light board, and improving the performance of the display device.

[0422] By designing the backplane assembly's mounting surface to tilt away from the backplane cavity, the diffuser plate is pre-deformed during installation, preventing it from deforming toward the display panel again under external forces during use. This design ensures that the diffuser plate does not experience unnecessary bending or deformation when subjected to external forces, thereby maintaining the stability of its optical performance. This improves the stability of the optical distance in the display device, thereby enhancing the display quality.

[0423] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0424] Note that the brief description of terms in this application is only for facilitating the understanding of the following-described embodiments, rather than intending to limit the embodiments of this application. Unless otherwise specified, these terms should be understood in their ordinary and common sense.

[0425] In addition, the terms "comprise" and "have" and any variations thereof are intended to cover but not exclusively include. For example, a product or device comprising a series of components does not necessarily have to be limited to those components clearly listed, but may include other components not clearly listed or inherent to these products or devices.

[0426] In the description of this application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this application.

[0427] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0428] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", and "couple" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0429] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0430] An embodiment of the present application provides a display device. The display device provided in the embodiment of the present application can have various implementation forms, for example, it can be a smart TV, a laser projection device, a monitor, an electronic whiteboard, an electronic desktop, etc.

[0431] Reference ​ As shown, the display device provided in an embodiment of the present application includes a display panel 100, a backplane 200, a light board 300, a flexible circuit board 400, a reflective sheet 500, and a diffuser plate 600. Along the thickness direction of the display device, the backplane 200, light board 300, reflective sheet 500, diffuser plate 600, and display panel 100 are arranged in sequence. 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 primary viewing interface for the user. The display panel 100 is used to display images or videos.

[0432] The backplate 200 is disposed on the side of the display panel 100 facing away from the display side. A through-hole 200a is provided on the backplate 200. The backplate 200 provides structural support for the display device. The backplate 200 increases the mechanical strength of the display device and protects it from damage during installation and use.

[0433] The lamp board 300 is used to support and fix the lamp body 340, ensuring that the position and angle of the lamp body 340 are appropriate 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.

[0434] The size of a single lamp board 300 is limited and cannot cover a large-sized display panel 100. In the display device provided in the embodiment of the present application, multiple lamp boards 300 are spliced together to achieve a larger display area, meeting the requirements of large-sized display devices. In order to achieve smooth splicing of the lamp boards 300, a flexible circuit board 400 is provided at the edge of the lamp board 300. The first end of the flexible circuit board 400 is connected to the lamp board 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 at least covers the end of the lamp board 300 near the through hole 200a. In this way, the flexible circuit board 400 is bent at the edge of the lamp board 300 to achieve the connection between the upper lamp body 340 of the lamp board 300 and the connector 700 on one side of the lamp board 300. In this way, the lamp body 340 on the lamp board 300 obtains external power supply and signal transmission through the connector 700.

[0435] At the same time, since the flexible circuit board 400 can be bent and adjusted in position, it can be closely connected to adjacent light boards 300, reducing the physical gap and the seams between the light boards 300, thus achieving a closer splicing effect. This not only improves the overall aesthetics of the light board 300 but also reduces problems such as light leakage and unevenness.

[0436] The reflective sheet 500 is disposed on the side of the light board 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, increasing the brightness and the utilization rate of the light effect.

[0437] The diffusion plate 600 is disposed between the display panel 100 and the light board 300. The diffusion plate 600 is used for evenly dispersing the light from the lamp body 340 to avoid the appearance of bright spots or dark spots.

[0438] To implement the setting of multiple light boards 300 on the backplane 200, the number of through holes 200a on the backplane 200 is multiple.

[0439] As a feasible implementation, referring to ​ as shown, the number of through holes 200a is multiple, and the multiple through holes 200a are sequentially arranged at intervals in the first direction. The first direction refers to the direction shown by X in ​ . The first direction is perpendicular to the thickness direction of the display device.

[0440] Along the second direction, the backplane 200 has a backplane center line 200d. The second direction refers to the direction shown by Y in ​ . The through hole 200a is disposed at the backplane center line 200d.

[0441] Referring to ​ as shown, by arranging the multiple through holes 200a at intervals in the first direction and disposing the through holes 200a at the backplane center line 200d, the stress is evenly dispersed to avoid stress concentration at a certain position, thereby improving the overall structural stability of the backplane 200 and enhancing the symmetry and balance of the backplane 200. At the same time, the multiple through holes 200a can effectively disperse and discharge the heat inside the backplane 200, prevent overheating, and improve the heat dissipation performance of the display device.

[0442] In some embodiments, the first direction can be the length direction of the backplane 200. The second direction can be the width direction of the backplane 200.

[0443] In other embodiments, the first direction can be the width direction of the backplane 200. The second direction can be the length direction of the backplane 200.

[0444] As a feasible implementation, referring to ​As shown, the through-hole 200a includes a first through-hole 200b and a second through-hole 200c that are not connected to each other. The number of the first through-holes 200b is multiple, and the number of the second through-holes 200c is multiple. The multiple first through-holes 200b and the multiple second through-holes 200c are arranged in a one-to-one correspondence.

[0445] Along the second direction, the first through-holes 200b are arranged on the first side of the extension direction of the backplane 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 backplane center line 200d. The multiple first through-holes 200b and the multiple second through-holes 200c are arranged in a one-to-one correspondence. The distance between the corresponding first through-hole 200b and the second through-hole 200c is equal. In this way, the first through-holes 200b and the second through-holes 200c are respectively arranged on both sides of the extension direction of the backplane center line 200d, forming a symmetric distribution. This design can evenly disperse stress, avoid stress concentration at a certain position, and thus improve the overall structural stability of the backplane 200. At the same time, the first through-holes 200b and the second through-holes 200c are used for the flexible circuit board 400 to pass through, improving the neatness and reliability of the backplane 200.

[0446] As an implementable embodiment, referring to ​ As shown, the lamp board 300 includes a first lamp board 350 and a second lamp board 360. The number of the first lamp boards 350 is multiple. The number of the second lamp boards 360 is multiple.

[0447] Along the second direction, the multiple first lamp boards 350 are arranged on the first side of the extension direction of the backplane center line 200d. The multiple second lamp boards 360 are arranged on the second side opposite to the first side of the backplane center line 200d. The multiple first lamp boards 350, the multiple through-holes 200a, and the multiple second lamp boards 360 are arranged in a one-to-one correspondence.

[0448] It can be understood that each first lamp board 350 is correspondingly provided with a flexible circuit board 400. Each second lamp board 360 is correspondingly provided with a flexible circuit board 400.

[0449] Along the second direction, the first light board 350 is disposed on the first side close to the extending direction of the backplane center line 200d. A plurality of first light boards 350 and a plurality of through holes 200a are arranged in one-to-one correspondence. The first end of the flexible circuit board is connected to the bonding area 311 of the first light board 350. At least a part of the middle section of the flexible circuit board covers the end of the light board 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 external power and signals into the light board 300, and the light bodies 340 on the light board 300 emit light. By arranging the first light boards 350 and the through holes 200a in one-to-one correspondence and connecting the first light boards 350 to the connector 700 through the flexible circuit board 400, individual control of each first light board 350 is achieved. Each connector 700 can independently transmit power and signals to the corresponding first light board 350, enabling each first light board 350 to work independently and meeting different display effects.

[0450] Along the second direction, the second light board 360 is disposed on the second side opposite to the first side of the backplane center line 200d. A plurality of second light boards 360 and a plurality of through holes 200a are arranged in one-to-one correspondence. The first end of the flexible circuit board is connected to the bonding area 311 of the second light board 360. At least a part of the middle section of the flexible circuit board covers the end of the light board 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 external power and signals into the light board 300, and the light bodies 340 on the light board 300 emit light. By arranging the second light boards 360 and the through holes 200a in one-to-one correspondence and connecting the second light boards 360 to the connector 700 through the flexible circuit board 400, individual control of each second light board 360 is achieved. Each connector 700 can independently transmit power and signals to the corresponding second light board 360, enabling each second light board 360 to work independently and meeting different display effects.

[0451] Exemplarily, the distances between adjacent first light boards 350 are equal. The distances between adjacent second light boards 360 are equal. The distances between the corresponding first light board 350 and the second light board 360 are equal. This setting of uniform spacing helps to achieve the uniform arrangement of the light boards 300 and ensure the consistency of the display effect.

[0452] When the flexible circuit board 400 is used to bend around the light board 300, the flexible circuit board 400 will deform under its own stress. At this time, a bulge will occur between the flexible circuit board 400 and the light board 300, affecting the light emission of the light bodies 340 on the light board 300 and the display effect of the display device. To solve the bulge problem, the present application provides the following embodiments.

[0453] As an achievable implementation manner, referring to ​As shown, the backplane 200 has a first backplane surface 210, a second backplane surface 220, and a third backplane surface 230 that are sequentially connected. Along the thickness direction of the display device, the first backplane surface 210 and the third backplane surface 230 are oppositely arranged. The second backplane surface 220 connects the first backplane surface 210 and the third backplane surface 230. The second backplane surface 220 has a backplane inclined section 221. The backplane inclined section 221 is provided at the through hole 200a.

[0454] A light board 300 is provided on the first backplane surface 210.

[0455] The backplane inclined section 221 includes a first backplane end close to the first backplane surface 210 and a second backplane end close to the third backplane surface 230. Along the direction perpendicular to the thickness direction of the backplane 200, the second backplane end is closer to the center of the light board 300 relative to the first backplane end;

[0456] Along the direction from the first backplane end to the second backplane end, the distance between the backplane inclined section 221 and the display panel 100 gradually increases. That is, the angle between the direction from the first backplane end to the second backplane end and the first backplane surface 210 is an acute angle.

[0457] The flexible circuit board 400 includes a first end of the flexible circuit board, a middle section of the flexible circuit board, and a second end of the flexible circuit board that are sequentially connected.

[0458] The first end of the flexible circuit board is connected to the light board 300. The second end of the flexible circuit board is connected to the backplane inclined section 221, and the second end of the flexible circuit board is connected to the connector 700. The middle section of the flexible circuit board at least covers the end of the light board 300 close to the through hole 200a.

[0459] The light board 300 is provided on the first backplane surface 210. The light board 300 is connected to the first backplane surface 210. The connector 700 is provided on the backplane inclined section 221.

[0460] In the display device provided by the embodiment of the present application, by providing the backplane inclined section 221 on the backplane 200, when the flexible circuit board 400 is bent, the first end of the flexible circuit board is connected to the light board 300, the second end of the flexible circuit board is connected to the backplane inclined section 221, the middle section of the flexible circuit board at least covers the end of the light board 300 close to the through hole 200a, and the backplane 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 a sharp bend of the flexible circuit board 400 during the connection process, and reduces the mechanical stress generated by the bending of the flexible circuit board 400; at the same time, the setting of the backplane inclined section 221 increases the connection area between the flexible circuit board 400 and the backplane 200, avoids the problem of bulging at the connection between the flexible circuit board 400 and the backplane 200 and at the connection between the flexible circuit board 400 and the light board 300, and further avoids the problem of the bulging affecting the light propagation uniformity of the lamp body 340.

[0461] As an implementable embodiment, referring to ​ As shown, along the first direction, the backplane inclined section 221 is disposed in the middle section of the second surface 220 of the backplane. The first direction is perpendicular to the thickness direction of the display device.

[0462] The surface of the backplane inclined section 221 facing the through hole 200a forms a part of the inner wall of the through hole 200a.

[0463] Exemplarily, the number of the through holes 200a on the backplane 200 is one. The second surface 220 of the backplane includes a backplane vertical section and a backplane inclined section 221. Along the first direction, the two backplane vertical sections are disposed at opposite ends of the backplane inclined section 221, and the first direction refers to the direction shown by X in ​ . By disposing the backplane inclined section 221 in the middle section of the second surface 220 of the backplane, there is a step between the backplane inclined section 221 and the backplane vertical section, and the step plays a role in limiting the flexible circuit board 400, avoiding the movement of the flexible circuit board 400, and avoiding problems such as poor contact or open circuit caused by the movement of the flexible circuit board 400, thereby improving the connection stability of the flexible circuit board 400.

[0464] As an implementable embodiment, referring to ​ As shown, the backplane inclined section 221 is stepped. The backplane inclined section 221 includes a first inclined section 222, a second inclined section 223, and a third inclined section 224 that are connected in sequence. The first inclined section 222 is connected to the first surface 210 of the backplane. The third inclined section 224 is connected to the third surface 230 of the backplane. The second inclined section 223 connects the first inclined section 222 and the third inclined section 224.

[0465] Along 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 backplane and a second inclined end disposed close to the third surface 230 of the backplane. Along the direction perpendicular to the thickness direction of the display device, the second inclined end is disposed closer to the center direction of the lamp board 300 relative to the first inclined end.

[0466] Along the first inclined end to the second inclined end, the distance between the first inclined section 222 and the display panel 100 gradually increases.

[0467] The extending directions of the first inclined section 222 and the third inclined section 224 are parallel. The extending direction of the second inclined section 223 intersects the extending directions of the first inclined section 222 and the third inclined section 224.

[0468] The display device provided by the embodiment of the present application provides more installation and fixing points for the installation of the flexible circuit board 400 by arranging a first inclined section 222, a second inclined section 223, and a third inclined section 224 connected in sequence, effectively increasing the contact area between the flexible circuit board 400 and the backplane inclined section 221, facilitating the installation of the flexible circuit board 400, and improving the stability and reliability of the installation of the flexible circuit board 400. ​ The figure shows a schematic structural diagram of the backplane inclined section 221 having a step.

[0469] It can be understood that multiple inclined sections can be arranged on the backplane inclined section 221.

[0470] As an implementable embodiment, the surface of the backplane inclined section 221 is uneven.

[0471] In some embodiments, the surface of the backplane inclined section 221 is a rough surface. The rough surface includes minute protrusions and depressions. In this way, the flexible circuit board 400 can be deformed at the protrusions and depressions. The protrusions and depressions can increase the contact area between the flexible circuit board 400 and the backplane inclined section 221, increase the friction between the flexible circuit board 400 and the backplane inclined section 221, prevent the flexible circuit board 400 from sliding or shifting during use, so as to further improve the connection stability between the flexible circuit board 400 and the backplane 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 backplane 200, and between the flexible circuit board 400 and the lamp board 300.

[0472] As an implementable embodiment, referring to ​ , the lamp board 300 has a lamp board first surface 310, a lamp board second surface 320, and a lamp board third surface 330 connected in sequence. Along the thickness direction of the display device, the lamp board first surface 310 and the lamp board third surface 330 are oppositely arranged.

[0473] The lamp board first surface 310 faces the display panel 100. A lamp body 340 is arranged on the lamp board first surface 310. The lamp board second surface 320 connects the lamp board first surface 310 and the lamp board third surface 330. The lamp board third surface 330 is connected to the backplane first surface 210.

[0474] Exemplarily, the included angle range between the direction from the first end to the second end of the backplane and the lamp board second surface 320 is greater than 110° and less than 130°.

[0475] When the angle between the direction from the first end to the second end of the backplane and the second surface 320 of the lamp board is less than 110°, the bending angle of the flexible circuit board 400 is still too large to effectively relieve the mechanical stress at the bending part, which will cause stress concentration and increase the risk of fracture or damage of the flexible circuit board 400. At the same time, when the angle is too small, the contact area between the flexible circuit board 400 and the inclined section 321 of the lamp board cannot be effectively increased, 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, on the basis that the angle between the second surface 320 and the third surface 330 of the lamp board is 90°, in order to make the angle between the inclined section 221 of the backplane and the second surface 320 of the lamp board less than 110°, the angle between the first surface 210 of the backplane and the inclined section 221 of the backplane must be less than 20°. This design will increase the manufacturing difficulty and complexity of the backplane 200, which is not conducive to mass production and quality control.

[0476] When the angle between the direction from the first end to the second end of the backplane and the second surface 320 of the lamp board is greater than 130°, the contact area between the flexible circuit board 400 and the inclined section 321 of the lamp board 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.

[0477] Therefore, in the present application, the angle range between the direction from the first end to the second end of the backplane and the second surface 320 of the lamp board is set 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, ensure the contact area between the flexible circuit board 400 and the backplane 200.

[0478] Optionally, in the present application, the angle between the direction from the first end to the second end of the backplane and the second surface 320 of the lamp board can be 115°, 120°, 125°.

[0479] The lamp board 300 is disposed between the backplane 200 and the display panel 100. The lamp board 300 is connected to the backplane 200.

[0480] Among them, the lamp body 340 can be an LED lamp.

[0481] As an implementable embodiment, referring to ​ , the second surface 320 of the lamp board has an inclined section 321 of the lamp board. Along the thickness direction of the lamp board 300, the inclined section 321 of the lamp board includes a first end of the lamp board close to the first surface 310 of the lamp board and a second end of the lamp board close to the third surface 330 of the lamp board. Along the direction perpendicular to the thickness direction of the lamp board 300, the second end of the lamp board deviates from the lamp body 340 relative to the first end of the lamp board. Along the direction from the first end to the second end of the lamp board, the distance between the inclined section 321 of the lamp board and the display panel 100 gradually increases. That is, the angle between the direction from the first end to the second end of the lamp board and the extending direction of the first surface 310 of the lamp board is an obtuse angle.

[0482] The flexible circuit board 400 is bent at the edge of the lamp board 300. The flexible circuit board includes a first end of the flexible circuit board, a middle section of the flexible circuit board, and a second end of the flexible circuit board that are connected in sequence. The first end of the flexible circuit board is connected to the first surface 310 of the lamp board. The second end of the flexible circuit board is connected to the third surface 330 of the lamp board, and the second end of the flexible circuit board is connected to the connector 700. The middle section of the flexible circuit board at least covers the inclined section 321 of the lamp board. In this way, the lamp body 340 on the lamp board 300 obtains external power supply and signal transmission through the connector 700.

[0483] In the display device provided by the embodiment of the present application, by providing the inclined section 321 on the lamp board 300, the inclined section 321 of the lamp board provides a smooth transition path for the bending of the flexible circuit board 400. The first end of the flexible circuit board is connected to the first surface 310 of the lamp board, the second end of the flexible circuit board is connected to the third surface 330 of the lamp board, and the middle section of the flexible circuit board at least covers the inclined section 321 of the lamp board, increasing the bending angle at the connection between the first surface 310 of the lamp board and the inclined section 321 of the lamp board, thereby reducing the bending angle of the flexible circuit board 400, avoiding a sharp bend in the flexible circuit board 400 during the connection process, reducing the 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 board 300, and further avoiding the problem of the bulging affecting the light propagation uniformity of the lamp body 340. At the same time, the setting of the inclined section 321 of the lamp board increases the connection area between the flexible circuit board 400 and the lamp board 300, improving the connection stability between the flexible circuit board 400 and the lamp board 300.

[0484] As an implementable embodiment, the lamp board 300 includes a first lamp board 350 and a second lamp board 360. The number of the first lamp boards 350 is multiple, and the number of the second lamp boards 360 is multiple.

[0485] Along the second direction, multiple first lamp boards 350 are arranged on the first side in the extending direction of the backplane center line 200d. Multiple second lamp boards 360 are arranged on the second side opposite to the first side in the extending direction of the backplane center line 200d.

[0486] Multiple first lamp boards 350 and multiple first through holes 200b are arranged in one-to-one correspondence. Multiple second lamp boards 360 and multiple second through holes 200c are arranged in one-to-one correspondence.

[0487] It can be understood that each first lamp board 350 is correspondingly provided with a flexible circuit board 400. Each second lamp board 360 is correspondingly provided with a flexible circuit board 400.

[0488] Exemplarily, the first end of the flexible circuit board is connected to the first light board 350, at least part of the middle section of the flexible circuit board covers the inclined section 321 of the light board, the second end of the flexible circuit board is connected to the third surface 330 of the light board, and the second end of the flexible circuit board is connected to the connector 700 located in the first through hole 200b. In this way, the connector 700 inputs external power and signals into the light board 300, and the light bodies 340 on the light board 300 emit light. By setting the first light board 350 and the first through hole 200b in one-to-one correspondence, and connecting the first light board 350 to the connector 700 through the flexible circuit board 400, individual control of each first light board 350 is achieved. Each connector 700 can independently transfer power and signals to the corresponding first light board 350, enabling each first light board 350 to work independently and meet different display effects.

[0489] Wherein, along the thickness direction of the display device, the first end of the light board inclined section 321 on the first light board 350 extends towards the direction close to the light body 340 on the first light board 350 relative to the second end of the light board inclined section 321 on the first light board 350.

[0490] The first end of the flexible circuit board is connected to the second light board 360, at least the middle section of the flexible circuit board covers the inclined section 321 of the light board, the second end of the flexible circuit board is connected to the third surface 330 of the light board, and the second end of the flexible circuit board is connected to the connector 700 located in the second through hole 200c. In this way, the connector 700 inputs external power and signals into the light board 300, and the light bodies 340 on the light board 300 emit light. By setting the second light board 360 and the second through hole 200c in one-to-one correspondence, and connecting the second light board 360 to the connector 700 through the flexible circuit board 400, individual control of each second light board 360 is achieved. Each connector 700 can independently transfer power and signals to the corresponding second light board 360, enabling each second light board 360 to work independently and meet different display effects.

[0491] Wherein, along the thickness direction of the display device, the first end of the light board inclined section 321 on the second light board 360 extends towards the direction close to the light body 340 on the second light board 360 relative to the second end of the light board inclined section 321 on the second light board 360.

[0492] Exemplarily, the number of the first light boards 350 can be four. The number of the first through holes 200b can be four. The number of the second light boards 360 can be four. The number of the second through holes 200c can be four. The present application does not limit the number of the light boards 300 and the through holes 200a.

[0493] As an implementable embodiment, along the first direction, the light board inclined section 321 is arranged in the middle section of the second surface 320 of the light board. The first direction is perpendicular to the thickness direction of the display device.

[0494] Exemplarily, referring to ​ as shown, the bonding area 311 of the lamp board 300 is located between the outermost lamp body and the second outermost lamp body on the lamp board 300. The outermost lamp body refers to the lamp body 340 on the lamp board 300 that is closest to the second surface 320 of the lamp board. The second outermost lamp body refers to the lamp body 340 on the lamp board 300 that is closest to the second surface 320 of the lamp board after removing the outermost lamp body 340 on the lamp board 300.

[0495] Referring to ​ as shown, the bonding area 311 is located on the first surface of the lamp board 300. Along the first direction, the bonding area 311 is disposed near the middle section of the first surface 310 of the lamp board, so that the electrical connection points can be centrally managed, facilitating manufacturing and maintenance. The first direction refers to the direction shown by X in ​ . The first end of the flexible circuit board is bonded to the first surface 310 of the lamp board at the bonding area 311. The second end of the flexible circuit board is connected to the third surface 330 of the lamp board, and the second end of the flexible circuit board is connected to the connector 700. The middle section of the flexible circuit board at least covers the inclined section 321 of the lamp board. In this way, the first surface 310 of the lamp board and the inclined section 321 of the lamp board provide a smooth path for the flexible circuit board 400. Compared with the 90° bending angle where a part of the flexible circuit board 400 is located between the first surface 310 and the second surface 320 of the lamp board in a conventional display device, in the embodiment of the present application, the bending angle formed between the first surface 310 of the lamp board and the inclined section 321 of the lamp board is an obtuse angle, reducing the bending angle of the flexible circuit board 400, reducing the mechanical stress generated by the flexible circuit board 400, improving the connection stability between the flexible circuit board 400 and the lamp board 300, avoiding the problem of bulging at the connection between the flexible circuit board 400 and the lamp board 300, and further avoiding the problem that the bulging problem affects the light propagation uniformity of the lamp body 340.

[0496] The second surface 320 of the lamp board includes a vertical section 322 and an inclined section 321 of the lamp board. Along the first direction, the two vertical sections 322 of the lamp board are disposed at opposite ends of the inclined section 321 of the lamp board. In this way, the inclined section 321 of the lamp board corresponds to the position of the bonding area 311. The inclined section 321 of the lamp board is disposed in the middle section of the second surface 320 of the lamp board extending along the first direction, and the bonding area 311 is disposed in the middle section of the first surface 310 of the lamp board along the first direction. Concentrating the bonding area 311 and the inclined section 321 of the lamp board in the middle section helps to optimize the space utilization of the lamp board 300.

[0497] After the inclined section 321 of the lamp board is disposed between the two vertical sections 322 of the lamp board, there is a step between the inclined section 321 and the vertical section 322 of the lamp board. The step plays a role in limiting the flexible circuit board 400, avoiding the movement of the flexible circuit board 400, avoiding problems of poor contact or open circuit caused by the movement of the flexible circuit board 400, and improving the connection stability of the flexible circuit board 400.

[0498] It can be understood that the second surface 320 of the lamp board can all be the inclined section 321 of the lamp board, so as to simplify the manufacturing process, reduce the production steps, and thus improve the production efficiency.

[0499] As an implementable embodiment, a chamfer structure 800 is provided at the connection between the inclined section 321 of the lamp board and the first surface 310 of the lamp board.

[0500] As an implementable embodiment, referring to ​ As shown, a chamfer structure 800 is provided at the connection between the inclined section 321 of the lamp board and the third surface 330 of the lamp board.

[0501] In some embodiments, a chamfer structure 800 is provided at the connection between the inclined section 321 of the lamp board and the first surface 310 of the lamp board. The chamfer structure 800 provides a smooth transition area for the flexible circuit board 400 bent at the inclined section 321 of the lamp board, avoiding the sharp bending of the flexible circuit board 400 at the connection between the inclined section 321 of the lamp board and the first surface 310 of the lamp board. In this way, the chamfer structure 800 makes the connection between the flexible circuit board 400 and the inclined section 321 of the lamp board and the first surface 310 of the lamp board smoother, avoiding the problem of bulging at the connection, and further maintaining the uniform propagation of the 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.

[0502] In other embodiments, a chamfer structure 800 is provided at the connection between the inclined section 321 of the lamp board and the third surface 330 of the lamp board. The chamfer structure 800 provides a smooth transition area for the flexible circuit board 400 bent at the inclined section 321 of the lamp board, reducing the sharp bending of the flexible circuit board 400 at the connection between the inclined section 321 of the lamp board and the third surface 330 of the lamp board. In this way, the chamfer structure 800 makes the connection between the flexible circuit board 400 and the inclined section 321 of the lamp board and the third surface 330 of the lamp board 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.

[0503] In still other embodiments, a chamfer structure 800 is provided at the connection between the inclined section 321 of the lamp board and the first surface 310 of the lamp board. A chamfer structure 800 is provided at the connection between the inclined section 321 of the lamp board and the third surface 330 of the lamp board. The same effects as the above embodiments can be achieved, so they will not be elaborated here.

[0504] Exemplarily, the chamfer structure 800 can be a right chamfer, and the chamfer structure 800 can also be a rounded chamfer.

[0505] Exemplarily, when the chamfer structure 800 is a rounded chamfer, the chamfer radius of the chamfer structure 800 ranges from greater than 0.15 mm to less than 0.25 mm to effectively disperse stress and enable a smooth transition of the flexible circuit board 400.

[0506] When the radius of the chamfer structure 800 is greater than 0.25 mm, the radius of the chamfer structure 800 is too large. A chamfer with too large a size may reduce the effective cross-sectional area of the lamp board 300 and lower the strength of the lamp board 300. In addition, a chamfer structure 800 with too large a size may increase the complexity and difficulty of the manufacturing process, requiring more precise processing equipment and techniques, resulting in an increase in manufacturing costs.

[0507] When the radius of the chamfer structure 800 is less than 0.15 mm, the radius of the chamfer structure 800 is too small. A chamfer structure 800 with too small a size cannot effectively disperse stress, which may cause stress concentration in certain areas, increasing the risk of damage to the flexible circuit board 400 and the lamp board 300. At the same time, a chamfer structure 800 with too small a size cannot provide sufficient smooth transition, and the flexible circuit board 400 will still bear a large mechanical stress at the bending point, increasing the possibility of damage.

[0508] Therefore, in the embodiments of the present application, the chamfer radius of the chamfer structure 800 is set to be greater than 0.15 mm and less than 0.25 mm to effectively disperse stress and enable a smooth transition of the flexible circuit board 400.

[0509] In some embodiments, the chamfer radius of the chamfer structure 800 is 0.2 mm.

[0510] As an implementable embodiment, the surface of the lamp board inclined section 321 is uneven.

[0511] In some embodiments, the surface of the lamp board inclined section 321 is a rough surface. The rough surface includes minute 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 between the flexible circuit board 400 and the lamp board inclined section 321, increasing the friction force between the flexible circuit board 400 and the lamp board inclined section 321, preventing the flexible circuit board 400 from sliding or shifting during use, so as to further improve the connection stability between the flexible circuit board 400 and the lamp board inclined section 321 and avoid the problem of bulging between the flexible circuit board 400 and the lamp board 300.

[0512] Exemplarily, the lamp board 300 is an aluminum plate. For example, a sandpaper tool is used to process the surface of the lamp board inclined section 321 to make the surface of the lamp board 300 uneven.

[0513] As an implementable embodiment, along the thickness direction of the display device, the extension length T of the orthographic projection of the lamp board inclined section 321 on the plane where the backplane 200 is located along the second direction satisfies:

[0514]

[0515] Wherein, K is the distance between the lamp body 340 at the outermost edge of the lamp board 300 and the through hole 200a.

[0516] When the value of T is less than half of K, the extension length of the inclined section 321 of the lamp board in the second direction is too small. In this way, the stress relief of the inclined section 321 of the lamp board on the bending of the flexible circuit board 400 is limited, and the flexible circuit board 400 may still bulge, and the bulged flexible circuit board 400 will still affect the light emission of the lamp board 300.

[0517] When the value of T is greater than three-quarters of K, the extension length of the inclined section 321 of the lamp board in the second direction is too large. In this way, the contact area between the outermost lamp body 340 and the lamp board 300 is limited, which is not conducive to the installation of the lamp body 340 and reduces the service performance of the lamp board 300.

[0518] Therefore, in this application, the extension length T of the inclined section 321 of the lamp board on the backplane 200 satisfies:

[0519]

[0520] In this way, the bending stress of the flexible circuit board 400 can be effectively relieved, the bulging phenomenon can be avoided, and at the same time, it is ensured that the contact area between the lamp body 340 and the lamp board 300 is sufficient, which is conducive to the installation and fixation of the lamp body 340.

[0521] In some embodiments, the value of T is two-thirds of K.

[0522] As an implementable implementation manner, the inclined section 321 of the first lamp board 350 is arranged close to the first through hole 200b, which is convenient for the second end of the flexible circuit board to be connected to the connector 700, and simplifies the installation process of the flexible circuit board 400. At the same time, when the flexible circuit board 400 needs to be maintained or replaced, it is also more convenient and fast.

[0523] In some embodiments, the inclined section 321 of the second lamp board 360 is arranged close to the second through hole 200c. It is convenient for the second end of the flexible circuit board to be connected to the connector 700, and simplifies the installation process of the flexible circuit board 400. At the same time, when the flexible circuit board 400 needs to be maintained or replaced, it is also more convenient and fast.

[0524] As an implementable implementation manner, referring to ​ As shown, along the thickness direction of the display device, the inclined section 321 of the lamp board includes a first end of the lamp board close to the first surface 310 of the lamp board and a second end of the lamp board close to the third surface 330 of the lamp board. The first end of the lamp board is inclined towards the lamp body 340 relative to the second end of the lamp board.

[0525] The inclined section 321 of the lamp board is connected to the inclined section 221 of the back board.

[0526] Exemplarily, the included angle range between the direction from the first end to the second end of the lamp board and the first surface 310 of the lamp board is greater than 150° and less than 170°.

[0527] When the included angle between the direction from the first end to the second end of the lamp board and the first surface 310 of the lamp board 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 easily causes the flexible circuit board 400 to break or be damaged. Moreover, when the included angle between the direction from the first end to the second end of the lamp board and the first surface 310 of the lamp board is less than 150°, the contact area between the flexible circuit board 400 and the inclined section 321 of the lamp board cannot be effectively increased, reducing the connection stability between the flexible circuit board 400 and the inclined section 321 of the lamp board.

[0528] When the included angle between the direction from the first end to the second end of the lamp board and the first surface 310 of the lamp board is greater than 170°, the inclined section 321 of the lamp board almost becomes a horizontal section, which is not conducive to the bending of the flexible circuit board 400. The too large included angle increases the splicing area between adjacent lamp boards 300, resulting in loose splicing, 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.

[0529] Therefore, in the embodiments of the present application, the included angle range between the direction from the first end to the second end of the lamp board and the first surface 310 of the lamp board is set to be greater than 150° and less than 170°, so as to effectively disperse the bending stress of the flexible circuit board 400, reduce stress concentration, avoid the bulging phenomenon. At the same time, reduce the splicing area between adjacent lamp boards 300, make the splicing more compact, and improve the stability and aesthetics of the overall structure of the display device.

[0530] Optionally, the included angle between the direction from the first end to the second end of the lamp board and the first surface 310 of the lamp board is 155°, 160°, or 165°.

[0531] The flexible circuit board 400 includes a first board section, a second board section, and a third board section connected in sequence. Among them, the part of the first board section covering the first surface 310 of the lamp board. The part of the second board section covering the second surface 320 of the lamp board. The part of the third board section covering the inclined section 221 of the back board.

[0532] By setting the inclined section 321 of the lamp board, the bending angle at the connection between the first board section and the second board section is reduced, the contact area between the second board section and the inclined section 321 of the lamp board is increased, the mechanical stress at the connection between the first board section and the second board section is alleviated, and the problem of bulging at the connection between the flexible circuit board 400 and the lamp board 300 is avoided; by setting the inclined section 221 of the back plate, the bending angle at the connection between the second board section and the third board section is reduced, the contact area between the third board section and the inclined section 221 of the back plate is increased, the mechanical stress generated by the bending of the second board section and the third board section is reduced, the problem of bulging at the connection between the flexible circuit board 400 and the back plate 200 is avoided, and further the problem of bulging between the first board section and the lamp board 300 is avoided.

[0533] As an implementable embodiment, a chamfer structure 800 is provided at the connection between the inclined section 221 of the back plate and the inclined section 321 of the lamp board.

[0534] In some embodiments, a chamfer structure 800 is provided at the connection between the inclined section 321 of the lamp board and the inclined section 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 board 300 and the back plate 200, reducing the sharp bending of the flexible circuit board 400 at the connection between the inclined section 321 of the lamp board and the inclined section 221 of the back plate; the chamfer structure 800 makes the connection between the flexible circuit board 400 and the inclined section 321 of the lamp board and the inclined section 221 of the back plate smoother, avoiding the problem of bulging at the connection, and further maintaining the uniform propagation of the 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.

[0535] Exemplarily, the chamfer structure 800 includes a right-angle chamfer and a rounded chamfer.

[0536] As an implementable embodiment, referring to ​ As shown, a first opening 400a is provided at the first end of the flexible circuit board. The reflective sheet 500 is disposed on the side of the flexible circuit board 400 facing the display panel 100. A second opening 521 is provided on the reflective sheet 500.

[0537] The first opening 400a and the second opening 521 are communicated, and a part of the lamp body 340 passes through the first opening 400a and the second opening 521 to be connected to the lamp board 300. Along the thickness direction of the display device, the positive projection of the hole edge of the first opening 400a on the plane where the reflective sheet 500 is located surrounds the outer periphery of the second opening 521.

[0538] Exemplarily, during the assembly process of the display device, first, a colloid is applied to the side of the lamp board 300 facing away from the backplane 200, and the lamp body 340 is bonded to the lamp board 300. Subsequently, the flexible circuit board 400 is connected to the lamp board 300. The lamp board 300 is provided with pads on the side close to the display panel 100. The pads on the flexible circuit board 400 are connected to the pads on the lamp board 300. At the same time, the lamp body 340 passes through the first opening 400a on the flexible circuit board 400. Then, the reflector 500 is disposed on the side of the flexible circuit board 400 facing away from the lamp board 300. At this time, the lamp body 340 passes through the second opening 521 on the reflector 500.

[0539] Since the reflectivity of the reflector 500 is higher than that of the flexible circuit board 400, in order to improve the light reflectivity, it is necessary to prevent the light emitted by the lamp body 340 from 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 embodiment of the present application, along the thickness direction of the display device, the positive projection of the hole edge of the first opening 400a on the plane where the reflector 500 is located surrounds the outer periphery of the second opening 521. In this way, the aperture of the second opening 521 on the reflector 500 is not larger than the aperture size of the first opening 400a of the flexible circuit board 400, and the reflector 500 covers the hole edge of the flexible circuit board 400 where the first opening 400a is provided, preventing the light from being reflected by the flexible circuit board 400. The light emitted by the lamp board 300 is smoothly reflected by the reflector 500, so as to reflect and utilize the light to the maximum extent, improve the uniformity of light propagation, and improve the brightness uniformity of the display device.

[0540] As an implementable embodiment, referring to ​ As shown, the aperture of the first opening 400a is not less than the aperture of the second opening 521.

[0541] As an implementable embodiment, 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 aperture 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, preventing the light from being reflected on the side walls of the first opening 400a and the second opening 521. In this way, the light is not blocked or shielded by the flexible circuit board 400 and the side wall of the second opening 521, thereby improving the light efficiency and the display effect and ensuring smooth light transmission.

[0542] By setting the aperture of the second opening 521 of the reflective sheet 500 to be not 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, minimizing the loss of light during transmission, ensuring that the light can effectively irradiate the display panel 100, and improving the light utilization rate.

[0543] As an achievable implementation manner, the centers of the first opening 400a, the second opening 521, and 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 the scattering and loss of light, and improving the light efficiency and display effect.

[0544] As an achievable implementation manner, the radial dimension of the second opening 521 at the end close to the lamp board 300 is not greater than the radial dimension of the second opening 521 at the end away from the lamp board 300.

[0545] Exemplarily, referring to ​ as shown, along the thickness direction of the display device, referring to ​ the direction indicated by Z in

[0546] As an achievable implementation manner, the radial dimension of the second opening 521 at the end close to the lamp board 300 is equal to the radial dimension of the second opening 521 at the end away from the lamp board 300.

[0547] As an achievable implementation manner, the radial dimension of the first opening 400a at the end close to the lamp board 300 is equal to the radial dimension of the first opening 400a at the end away from the lamp board 300.

[0548] In some embodiments, the radial dimension of the first opening 400a near one end of the lamp board 300 is equal to the radial dimension of the first opening 400a away from the lamp board 300. The radial dimension of the second opening 521 near one end of the lamp board 300 is equal to the radial dimension of the second opening 521 away from the lamp board 300. In this way, the flexible circuit board 400 will not cause loss to the transmission of light, ensuring that the light can be effectively irradiated onto the display panel 100, and improving the light utilization rate. At the same time, the design of the equal-diameter first opening 400a and second opening 521 simplifies the design and manufacturing process, reduces complexity and manufacturing costs, and improves production efficiency and product consistency.

[0549] In other embodiments, the radial dimension of the first opening 400a near one end of the lamp board 300 is equal to the radial dimension of the first opening 400a away from the lamp board 300. The radial dimension of the second opening 521 near one end of the lamp board 300 is smaller than the radial dimension of the second opening 521 away from the lamp board 300. The equal-diameter design of the first opening 400a ensures that the light can pass through smoothly, while the design of the gradually expanding second opening 521 can guide the light to pass through the opening more effectively, reducing the occlusion and loss of light, and improving the light effect and display effect. The design of the gradually expanding second opening 521 can reduce the scattering of light at the edge of the opening, enabling more light to directly pass through the opening, and improving the light utilization rate. A part of the light emitted by the lamp body 340 is emitted towards the second opening 521. At this time, this part of the light is reflected by the side wall surface of the reflector 500 and then emitted through the second opening 521, and the light loss of the lamp body 340 is less.

[0550] As an achievable implementation manner, referring to ​ as shown, the reflector 500 includes a first reflection section 510 and a second reflection section 520 connected to each other.

[0551] Along the thickness direction of the display device, the orthographic projection of the flexible circuit board 400 on the plane where the lamp board 300 is located covers the second reflection section 520.

[0552] A reflector opening 511 is formed on the first reflection section 510, and a second opening 521 is formed on the second reflection section 520. The aperture of the reflector opening 511 is not larger than the aperture of the second opening 521.

[0553] Exemplarily, a part of the lamp board 300 is covered by the flexible circuit board 400. Another part of the lamp board 300 is not covered by the flexible circuit board 400. The reflective sheet 500 is disposed on the side of the lamp board 300 close to the display panel 100. A part of the reflective sheet 500 covers above the flexible circuit board 400. Another part of the reflective sheet 500 directly covers above the lamp board 300. Considering the different reflectivities of the flexible circuit board 400 and the reflective sheet 500, it is necessary to consider the diameter of the lamp body 340 when the flexible circuit board 400 is provided, the aperture diameter of the first opening 400a on the flexible circuit board 400, and the aperture size relationship of the second opening 521 on the reflective sheet 500.

[0554] The reflective sheet 500 not covered on the flexible circuit board 400 is the first reflective section 510. The reflective sheet opening 511 is provided on the first reflective section 510. The reflective sheet 500 covering on the flexible circuit board 400 is the second reflective section 520. The second opening 521 is provided on the second reflective section 520. Among them, when the reflective sheet opening 511 is provided, the first reflective section 510 directly covers on the side of the lamp board 300 close to the display panel 100, and there is no need to consider the reflectivity difference problem between the flexible circuit board 400 and the reflective sheet 500. Therefore, the aperture diameter of the reflective sheet opening 511 can be larger than the diameter of the lamp body 340, and there is no need to consider the aperture relationship with the second opening 521. In this way, the aperture diameter of the reflective sheet opening 511 is smaller than the aperture diameter of the second opening 521, so as to further reduce the loss of light when passing through the reflective sheet 500 and ensure that more light can be effectively utilized to improve the light utilization rate.

[0555] As an implementable embodiment, the ratio of the aperture diameter of the first opening 400a to the aperture diameter of the second opening 521 is greater than 1 and less than 1.2.

[0556] When the ratio of the aperture diameters of the first opening 400a and 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 reduction in the light transmission efficiency and affecting the light effect and display effect.

[0557] When the diameter ratio of the first opening 400a and the second opening 521 is less than 1, along the thickness direction of the display device, a part of the flexible circuit board 400 is exposed 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 light reflectivity and affect the light reflection.

[0558] Therefore, in the embodiment of the present application, by controlling the ratio of the aperture diameters of the first opening 400a and the second opening 521 to be greater than 1 and less than 1.2, the light transmission efficiency when the light passes through the opening is maximized, the light blocking and loss are reduced, and the light effect and display effect are improved.

[0559] Optionally, the ratio of the aperture diameters of the first opening 400a and the second opening 521 is 1.05, 1.1, or 1.15.

[0560] As an implementable embodiment, during the use of the display device, there is a problem of unstable connection between the lamp board 300 and the flexible circuit board 400. In the display device provided in the embodiments of the present application, the display device further includes a first colloid 900. The first colloid 900 is used to improve the connection strength between the lamp board 300 and the flexible circuit board 400. Refer to ​ As shown, a part of the first colloid 900 covers the first end of the flexible circuit board. A part of the first colloid 900 is filled into the first opening. The first colloid 900 wraps the flexible circuit board 400 and the lamp board 300.

[0561] In the display device provided in the embodiments of the present application, by providing the first colloid 900 and covering a part of the first colloid 900 on the first end of the flexible circuit board 400, and filling a part of the first colloid 900 into the first opening, the mechanical connection strength between the flexible circuit board 400 and the lamp board 300 is improved, and the connection stability between the lamp board 300 and the flexible circuit board 400 is improved. This design effectively reduces the risk of separation between the flexible circuit board 400 and the lamp board 300 due to long-term use. The use of the first colloid 900 not only enhances the connection strength between the flexible circuit board 400 and the lamp board 300, but also provides external protection for the flexible circuit board 400 and the lamp board 300, preventing environmental factors (such as moisture, dust, etc.) from eroding the connection part between the lamp board 300 and the flexible circuit board 400, thereby improving the reliability and service life of the entire display device.

[0562] It can be understood that the first colloid 900 will not affect the light emitted by the lamp body 340.

[0563] As an implementable embodiment, refer to ​ As shown, a lamp board pad 370 is provided on the side of the lamp board 300 facing away from the backplane 200. The lamp board pad 370 is used to provide an electrical connection point, and the circuit on the lamp board 300 is used to electrically connect the respective lamp bodies 340 on the lamp board 300 to form a complete circuit. A circuit board pad 440 is provided on the side of the first board segment 410 close to the lamp board 300. The lamp board 300 and the flexible circuit board 400 are electrically connected through the lamp board pad 370 and the circuit board pad 440. The circuit board pad 440 on the flexible circuit board 400 is used to make electrical connection with the lamp board pad 370 on the lamp board 300, thereby realizing signal and power transmission between the flexible circuit board 400 and the lamp board 300.

[0564] As an implementable embodiment, the lamp board pad 370 and the circuit board pad 440 are connected by a second colloid.

[0565] The second colloid includes anisotropic conductive adhesive.

[0566] Exemplarily, an anisotropic conductive film (ACF adhesive) is a material used for connecting electronic components. The ACF adhesive is composed of conductive particles uniformly distributed in an insulating colloid, and can provide conductivity in a specific direction (usually the vertical direction), while remaining insulating in other directions. Among them, the conductive particles are usually microspheres plated with gold or silver, and can form a conductive path during the hot pressing process. The insulating colloid is usually a thermosetting resin, which can be softened and fixed during heating or pressurization to provide mechanical strength and insulating properties.

[0567] On the lamp board 300, a plurality of lamp board pads 370 and circuits are pre-designed and manufactured. The lamp board pads 370 can be made of a conductive material (such as copper) and are electroplated to ensure good conductivity and durability. The circuits are used to connect the plurality of lamp bodies 340 on the lamp board 300 to form the required circuit. The first end of the flexible circuit board 400 is also provided with circuit board pads 440, and the positions and sizes of these circuit board pads 440 match those of the lamp board pads 370 on the lamp board 300. The flexible circuit board 400 is usually made of polyimide and has good flexibility and heat resistance.

[0568] During the connection process of the flexible circuit board 400 and the lamp board 300, first, the ACF adhesive film is attached to the pads 440 of the flexible circuit board 400 to ensure that the anisotropic conductive adhesive covers all areas of the circuit board pads 440 that need to be connected, and there are no bubbles or impurities. Subsequently, the first end of the flexible circuit board 400 is aligned with the lamp board 300, so that the circuit board pads 440 (covered with the ACF adhesive film) on the flexible circuit board 400 are precisely aligned with the lamp board pads 370. Then, a hot pressing device is used to hot press the aligned flexible circuit board 400 and lamp board 300. The hot pressing device will activate the ACF adhesive film at a certain temperature and pressure, so that the conductive particles form a conductive path in the vertical direction, while the insulating board colloid remains insulating in the horizontal direction. After the hot pressing is completed, the ACF adhesive film will solidify during the cooling process to form a stable electrical connection and mechanical fixation.

[0569] By providing the second colloid, the electrical connection between the lamp board pads 370 and the circuit board pads 440 during use is realized, ensuring the connection strength between the lamp board 300 and the flexible circuit board 400.

[0570] As an implementable embodiment, the flexible circuit board 400 includes a first board segment 410, a second board segment 420, and a third board segment 430 that are connected in sequence. The first board segment 410 is disposed on the side of the light board 300 facing the display panel 100. The second board segment 420 is connected to the end of the light board 300 near the through hole 200a. The third board segment 430 is connected to the side of the light board 300 facing away from the display panel 100.

[0571] Exemplarily, the first board segment 410 is disposed on the side of the light board 300 facing the display panel 100. The first board segment 410 is connected to the light board 300 to ensure the stability of the electrical connection and mechanical connection between the first board segment 410 and the light board 300. At least a part of the second board segment 420 covers the end of the light board 300 near the through hole 200a. The third board segment 430 is disposed on the side of the backplane 200 facing away from the display panel 100. In this way, by bending the flexible circuit board, the circuits on both sides of the light board 300 can be spanned and the space can be effectively utilized.

[0572] Exemplarily, in order to improve the connection stability between the light board 300 and the first board segment 410, the first colloid 900 connects the first board segment 410 and the light board 300, ensuring the reliability of the electrical connection and the mechanical strength between the light board 300 and the first board segment 410. The first colloid 900 can also be filled in the gap between the first board segment 410 and the light board 300 to further improve the connection strength between the light board 300 and the flexible circuit board 400, preventing the connection between the light board 300 and the flexible circuit board 400 from loosening or breaking due to vibration or impact during use.

[0573] The first colloid 900 has a certain protective effect, which can protect the circuits and pads on the first board segment 410 and the light board 300 from the influence of the external environment, such as moisture, dust, etc., improving the durability and reliability of the entire display device.

[0574] As an implementable embodiment, referring to ​ As shown, along the thickness of the display device, the orthographic projection of the first colloid 900 on the plane where the light board 300 is located covers the first board segment 410. In this way, the first colloid 900 forms a covering layer around the first board segment 410. This covering layer can provide additional mechanical support, enhancing the connection stability between the first board segment 410 and the light board 300, preventing the connection between the first board segment 410 and the light board 300 from loosening or breaking due to vibration or impact during use. The covering layer of the first colloid 900 can effectively protect the circuits and pads on the first board segment 410 from the influence of the external environment, such as moisture, dust, etc., improving the durability and reliability of the entire display device.

[0575] As an implementable embodiment, referring to ​ As shown, the first colloid 900 includes a plurality of colloid segments 930.

[0576] The first plate segment 410 includes a first plate body, a first side, a second side, a third side, and a fourth side. The first side, the second side, the third side, and the fourth side are sequentially connected end to end.

[0577] At least four colloid segments 930 respectively cover the first side, the second side, the third side, and the fourth side in a one-to-one correspondence. At least part of the colloid segments 930 are filled in the first opening.

[0578] Exemplarily, multiple colloid segments 930 of the first colloid 900 respectively cover the four sides of the first plate segment 410, forming a complete covering structure. This covering structure can provide additional mechanical support, enhance the connection stability between the first plate segment 410 and the lamp board 300, and prevent loosening or breakage of the connection caused by vibration or impact during use.

[0579] The colloid segments 930 of the first colloid 900 can effectively fix the position of the first plate segment 410, prevent displacement and misalignment during installation and use, and ensure the accuracy and reliability of the electrical connection. At least part of the colloid segments 930 are filled in the first opening, which not only enhances the bonding force between the first colloid 900 and the first plate segment 410, but also can fix the position of the lamp body 340, prevent the lamp body 340 from shifting during use, and improve the stability of the display device.

[0580] As an implementable embodiment, the first colloid 900 includes an ultraviolet light-curing glue or a transparent acrylate glue.

[0581] In some embodiments, the first colloid 900 can be an ultraviolet light-curing glue. Ultraviolet curing glue (Ultraviolet, UV glue) is an adhesive that cures by ultraviolet light irradiation. Ultraviolet curing glue can cure rapidly under ultraviolet irradiation, usually only taking a few seconds to a few minutes. After curing, ultraviolet curing glue usually has high transparency and will not affect the light propagation of the lamp body 340. In addition, the shrinkage rate of ultraviolet curing glue during curing is relatively low, which can maintain the dimensional stability of the bonding part, reduce stress concentration and deformation.

[0582] In some other embodiments, the first colloid 900 can be a transparent acrylate glue. After curing, transparent acrylate glue usually has high transparency and will not affect the light propagation of the lamp body 340. Transparent acrylate glue usually has a relatively fast curing speed, which can improve production efficiency.

[0583] As an implementable embodiment, the thickness of the first colloid 900 is greater than 40μm and less than 50μm. The first colloid 900 within this thickness range can provide sufficient mechanical strength and adhesion, and will not be too thick to affect the overall thickness and aesthetics of similar devices.

[0584] When the thickness of the first colloid 900 is greater than 50 μm, the overly thick first colloid 900 will significantly increase the overall thickness of the backlight module. The overly thick first colloid 900 layer will increase the thermal resistance, affecting the heat dissipation performance of the circuit board and the lamp board 300, which may cause the device to overheat and affect its normal operation and lifespan. The overly thick colloid layer may generate large internal stresses during the curing process, resulting in deformation of the circuit board or uneven stress on the solder joints, affecting the reliability of the connection.

[0585] When the thickness of the first colloid 900 is less than 40 μm, the overly thin thickness of the first colloid 900 may not provide sufficient adhesion force, resulting in an insecure connection between the flexible circuit board 400 and the lamp board 300, affecting the reliability of the display device. The overly thin first colloid 900 may not completely fill the gap between the circuit board and the lamp board 300, leaving bubbles or voids, affecting the stability and reliability of the connection.

[0586] Therefore, in the embodiments of the present application, the thickness of the first colloid 900 is set to be greater than 40 μm and less than 50 μm to improve the connection strength between the flexible circuit board 400 and the lamp board 300 and ensure the connection stability between the flexible circuit board 400 and the lamp board 300.

[0587] As an implementable embodiment, referring to ​ As shown, along the direction perpendicular to the thickness of the display device, the lamp board 300 includes a lamp board body area 312 and a bonding area 311 that are connected to each other. The bonding area 311 is disposed closer to the through hole 200a relative to the lamp board body area 312.

[0588] The flexible circuit board 400 includes a first end of the flexible circuit board, a middle section of the flexible circuit board, and a second end of the flexible circuit board that are connected in sequence. The first end of the flexible circuit board is disposed in the bonding area 311 and is connected to the bonding area 311. The first end of the flexible circuit board is provided with a first opening. The middle section of the flexible circuit board at least covers the end of the lamp board 300 close to the through hole 200a; the second end of the flexible circuit board is disposed on the side of the lamp board 300 away from the display panel 100.

[0589] The first colloid 900 includes a first colloid segment 910 and a second colloid segment 920 that are connected to each other. A part of the first colloid segment 910 covers the first end of the flexible circuit board. The second colloid segment 920 covers a part of the lamp board body area 312.

[0590] The display device provided by the embodiment of the present application improves the connection strength between the flexible circuit board 400 and the lamp board 300 in the bonding area 311 and between the flexible circuit board 400 and the lamp board body area 312 by setting the first colloid 900 as the first colloid segment 910 and the second colloid segment 920, preventing the connection between the flexible circuit board 400 and the lamp board 300 from loosening or disconnecting due to external force, improving the connection stability between the lamp board 300 and the flexible circuit board 400, improving the service life of the display device, and improving the performance of the display device.

[0591] As an achievable implementation manner, referring to ​ As shown, the backplane assembly has a backplane cavity with one end open. The opening faces the display panel 100. The backplane assembly is disposed on the side of the diffusion plate 600 away from the display panel 100. An installation surface 270 is provided on the side of the backplane assembly close to the opening. Along the thickness direction of the display device, the installation surface 270 includes a first end of the installation surface close to the display panel 100 and a second end of the installation surface away from the display panel 100. Along the direction perpendicular to the thickness direction of the display device, the second end of the installation surface is closer to the backplane cavity relative to the first end of the installation surface. Along the direction from the first end to the second end of the installation surface, the distance between the installation surface 270 and the display panel 100 gradually increases;

[0592] The lamp board 300 is located in the backplane cavity. The lamp board 300 is connected to the backplane assembly. A lamp body and a driving chip are provided on the side of the lamp board 300 close to the diffusion plate 600. The driving chip is used to control the working state of the lamp body.

[0593] The support portion is disposed on the driving chip. The first end of the support portion covers the driving chip, and the second end of the support portion contacts the diffusion plate 600.

[0594] Among them, the distance between the diffusion plate 600 and the lamp body of the lamp panel 300 is the optical distance. The optical distance (OD) refers to the distance from the light source emitted by the lamp body to the diffusion plate 600. The magnitude of the OD value has an important impact on the optical performance of the display device. The OD value affects the uniformity of light on the diffusion plate 600. In the prior art, the OD value evolves in the direction of becoming smaller and smaller. The material of the diffusion plate 600 includes polycarbonate (PC), polystyrene (PS), and methyl methacrylate-styrene copolymer (MS). Moreover, the larger the size of the display device, the larger the size of the diffusion plate 600. In addition, part of the electrical energy is converted into heat energy during the use of the driving chip on the lamp panel 300. The generated heat energy causes the diffusion plate 600 to deform towards the side facing the display panel 100. The larger the size of the diffusion plate 600, the greater the deformation amount of the diffusion plate 600 along the thickness direction of the display device, which will affect the OD value of the display device.

[0595] In the embodiment of the present application, along the thickness direction of the display device, the mounting surface 270 includes a first end of the mounting surface close to the display panel 100 and a second end of the mounting surface facing away from the display panel 100. Along the direction from the first end of the mounting surface to the second end of the mounting surface, the distance between the mounting surface 270 and the display panel 100 gradually increases. In this way, during the installation of the diffusion plate 600, the diffusion plate 600 will undergo pre-deformation. The diffusion plate 600 bulges outwards towards the direction close to the backplane cavity. The pre-deformation can change the mechanical equilibrium state of the diffusion plate 600, making it easier to reach the equilibrium state during operation. By setting the mounting surface 270, the diffusion plate 600 undergoes pre-deformation during installation. In this way, the diffusion plate 600 is in a balanced position close to the working state after installation. During the use of the display device, the additional deformation and stress of the diffusion plate 600 caused by external forces are reduced. For example, the diffusion plate 600 deforms under the thermal stress of the driving chip.

[0596] The display device provided by the embodiment of the present application 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.

[0597] As an implementable embodiment, the backplane assembly includes a backplane 200. The backplane 200 includes a backplane bottom plate 240 and a backplane side plate 250. The backplane bottom plate 240 and the backplane side plate 250 surround to form a backplane cavity. The diffusion plate 600 and the display panel 100 are arranged at the opening of the backplane cavity. An installation surface 270 is formed at the end of the backplane side plate 250 close to the display side.

[0598] Exemplarily, the backplane bottom plate 240 is the main part of the backplane assembly. The backplane bottom plate 240 provides the basic support for the backplane assembly. The backplane side plates 250 are perpendicular to the backplane bottom plate 240. The backplane side plates 250 surround the backplane bottom plate 240. The backplane side plates 250 and the backplane bottom plate 240 together form the boundary of the backplane cavity. The backplane cavity is used to accommodate the lamp board 300 and the reflector 500.

[0599] By providing a mounting surface 270 on the side of the backplane side plate 250 close to the opening and mounting the end of the diffuser plate 600 on the mounting surface 270, the diffuser plate 600 is pre-bent during installation. Since the diffuser plate 600 bulges outward toward the backplane cavity during installation, this design avoids the problem of the diffuser plate 600 deforming toward the display panel 100 during use, improves the stability of the optical distance in the display device, and thus improves the display effect of the display device.

[0600] As an implementable embodiment, the backplane side plate 250 includes a top side plate 251, a right side plate 254, a bottom side plate 252, and a left side plate 253 that are connected in sequence. The left side plate 253 is connected to the top side plate 251.

[0601] 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 bottom 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;

[0602] A first mounting surface is formed at the ends of the top side plate 251 and the bottom side plate 252 close to the diffuser plate 600. Along the thickness direction of the display device, the first mounting surface includes a first mounting end close to the display panel 100 and a second mounting end facing away from the display panel 100. The second mounting end is closer to the backplane cavity relative to 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;

[0603] A second mounting surface is formed at the ends of the left side plate 253 and the right side plate 254 close to the diffuser plate 600. Along the thickness direction of the display device, the second mounting surface includes a third mounting end close to the display panel 100 and a fourth mounting end facing away from the display panel 100. The fourth mounting end is closer to the backplane cavity relative to 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.

[0604] The first mounting surface and the second mounting surface form the mounting surface 270.

[0605] Exemplarily, referring to ​ As shown, along the first direction, the left side plate 253 and the right side plate 254 are oppositely arranged. The first direction refers to​ The direction shown by X in the figure. Along the second direction, the top side side plate 251 and the bottom side side plate 252 are oppositely arranged. The second direction refers to ​ the direction shown by Y in the figure. By forming a first mounting surface at the ends of the top side side plate 251 and the bottom side side plate close to the diffusion plate 600, and forming a second mounting surface at the ends of the left side side plate 253 and the right side 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. In this way, each end of the diffusion plate 600 is pre-bent under the guidance of the mounting surface 270, increasing the contact area between the diffusion plate 600 and the back plate side plate 250, thereby improving the structural stability of the diffusion plate 600, avoiding deformation of the diffusion plate 600 during use, improving the stability of the optical distance in the display device, and improving the display effect of the display device.

[0606] As an implementable embodiment, the back plate assembly further includes a surrounding side plate. The first end of the surrounding side plate is connected to the back plate side plate 250. The second end of the surrounding side plate extends towards the direction close to the display panel 100. By providing the surrounding side plate, light leakage from the edge of the diffusion plate 600 is avoided, ensuring that the light is concentrated in the display area, and improving the contrast and clarity of the display effect. In addition, the connection between the surrounding side plate and the back plate side plate 250 increases the structural stability of the entire back plate assembly.

[0607] As an implementable embodiment, the number of lamp bodies is multiple, and the multiple lamp bodies are distributed in an array on the lamp board 300; a driving chip is arranged between adjacent lamp bodies.

[0608] Exemplarily, the multiple lamp bodies are distributed in an array on the lamp board 300 to ensure uniform distribution of the light source, reduce the appearance of light spots and dark areas, thereby improving the light uniformity of the diffusion plate 600.

[0609] As an implementable embodiment, the support portion includes a dispensing layer, and both ends of the dispensing layer are respectively connected to the driving chip and the diffusion plate 600; 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 board 300. This design ensures that the dispensing layer does not interfere with the installation of the diffusion plate 600 and the light propagation path, optimizes the installation space, and improves the installation efficiency.

[0610] As an implementable embodiment, the diffusion plate 600 is connected to the mounting surface through a connecting adhesive. The connecting adhesive can provide a strong adhesive force, ensuring that the diffusion plate 600 is firmly fixed on the mounting surface, preventing loosening or falling off. The high-transparency connecting adhesive can ensure that the light is not disturbed when passing through the bonding layer, maintaining the purity and uniformity of the light, and improving the display effect. Using the connecting adhesive can simplify the installation process, reduce the use of mechanical fasteners, and improve the installation efficiency.

[0611] As an implementable embodiment, the backplane bottom plate 240, the backplane side plate 250, and the enclosure side plate are integrally formed parts. By setting the backplane bottom plate 240, the backplane side plate 250, and the enclosure side plate as integrally formed parts, since there are no splicing or welding points, the overall structure of the backplane assembly is more robust, reducing quality differences caused by splicing or welding, and improving the structural strength and stability of the backplane assembly. At the same time, the integrally formed backplane assembly can effectively reduce the leakage of light from the gaps in the backplane 200, improving the contrast and clarity of the display effect.

[0612] As an implementable embodiment, referring to ​ and ​ shown, the backplane assembly further includes a middle frame 260. The middle frame 260 is disposed on the side of the backplane 200 close to the diffusion plate 600. The middle frame 260 is connected to the backplane 200. An installation surface 270 is provided on one side of the middle frame 260 close to the opening.

[0613] Exemplarily, the backplane 200 is the main support structure of the entire backplane assembly. The backplane 200 can be made of a metal material or a high-strength plastic. The backplane 200 provides mechanical strength and structural stability. The middle frame 260 is located on the side of the backplane 200 close to the diffusion plate 600. Such a design enables the middle frame 260 to directly support and fix the diffusion plate 600. The combination of the backplane 200 and the middle frame 260 provides higher structural stability. The backplane 200 provides the overall mechanical strength, while the middle frame 260 provides precise support for the diffusion plate 600.

[0614] As an implementable embodiment, the angle range between the direction from the first end to the second end of the installation surface and the plane where the display panel 100 is located is greater than 5° and less than 30°.

[0615] When the angle between the direction from the first end to the second end of the installation surface and the plane where the display panel 100 is located is less than 5°, in this way, the degree of pre-bending of the diffusion plate 600 is limited. During the use of the diffusion plate 600, the diffusion plate 600 still bends towards the display panel 100, affecting the optical distance OD value of the display device. At the same time, since the diffusion plate 600 bends towards the display panel 100, it may cause friction between the diffusion plate 600 and the display panel 100, resulting in damage to the display panel 100. In addition, when the inclination angle of the installation surface 270 is too small, the manufacturing difficulty of the installation surface 270 will increase.

[0616] 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 greater than 30°, that is, the inclination angle of the mounting surface 270 is very large and the mounting surface 270 is steep. In this way, stress concentration is likely to occur in the diffusion plate 600, resulting in deformation or cracking, 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 during the curing process of the connecting glue, which is likely to cause cracking or peeling of the connecting glue, affecting the bonding strength and stability between the diffusion plate 600 and the backplane assembly.

[0617] Therefore, in the embodiment of the present application, the angle range formed 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 set to be greater than 5° and equal to 30°. Such an angle range can form an appropriate 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, there is sufficient contact area between the diffusion plate 600 and the mounting surface 270, and the connecting glue can provide sufficient adhesive force to ensure that the diffusion plate 600 is firmly fixed.

[0618] As an implementable embodiment, along the thickness direction of the display device, the extension length range of the orthographic projection of the mounting surface 270 on the plane where the display panel 100 is located, along the direction perpendicular to the thickness direction of the display device, is greater than 3 mm and less than 5 mm.

[0619] When along the thickness direction of the display device, the extension length range of the orthographic projection of the mounting surface 270 on the plane where the display panel 100 is located, along the direction perpendicular to the thickness direction of the display device, is less than 3 mm, the contact area between the diffusion plate 600 and the backplane assembly is limited, and the backplane 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 forces, affecting the stability of the overall structure. In addition, the smaller extension length of the mounting surface 270 along the direction perpendicular to the thickness direction of the display device may result in insufficient contact area between the diffusion plate 600 and the connecting glue, which may cause the diffusion plate 600 to loosen or fall off. Moreover, the smaller extension length of the mounting surface 270 may increase the difficulty of alignment and fixation during the installation of the diffusion plate 600, reducing the installation efficiency.

[0620] When along the thickness direction of the display device, the extension length range of the orthographic projection of the mounting surface 270 on the plane where the display panel 100 is located, along the direction perpendicular to the thickness direction of the display device, is greater than 5 mm, the mounting surface 270 will block the light emitted by the lamp body, increasing light loss, reducing the light utilization efficiency, and affecting the display effect.

[0621] Therefore, in the embodiments of the present application, in the thickness direction of the display device, the orthographic projection of the mounting surface 270 on the surface where the display panel 100 is located has an extension length range less than 3 mm and greater than 5 mm in the direction perpendicular to the thickness direction of the display device, so as to ensure that there is sufficient contact area between the diffusion plate 600 and the mounting surface 270 of the backplane assembly, ensuring that the diffusion plate 600 is firmly fixed. At the same time, it is possible to avoid the backplane assembly from affecting the propagation of light, avoid light spots and dark areas, and improve the uniformity of the display effect.

[0622] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0623] For the sake of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussions are not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that, include: A display panel (100) having a display side; a back plate (200) disposed on a side of the display panel (100) facing away from the display side; a light board (300) disposed between the backboard (200) and the display panel (100), the light board (300) and the backboard (200) being connected; The light board (300) has: a first surface (310) of the light board, the first surface (310) of the light board facing the display panel (100), and a lamp body (340) being provided on the first surface (310) of the light board; The second surface (320) of the light board has a light board inclined section (321); A third surface (330) of the light board, the third surface (330) of the light board being connected to the backboard (200); Along the thickness direction of the light board (300), the first surface (310) of the light board and the third surface (330) of the light board are arranged opposite to each other, and the second surface (320) of the light board connects the first surface (310) of the light board and the third surface (330) of the light board; The light board inclined section (321) comprises: A first end of the light board, along the thickness direction of the light board (300), the first end of the light board is close to the first surface (310) of the light board; The second end of the light board is close to the third surface (330) of the light board along the thickness direction of the light board (300); Along a direction perpendicular to the thickness of the lamp board (300), the second end of the lamp board is away from the lamp body (340) relative to the first end of the lamp board; A flexible circuit board (400) is connected to the light board (300). The flexible circuit board (400) comprises: The first end of the flexible circuit board is connected to the first surface (310) of the light board The second end of the flexible circuit board is connected to the third surface (330) of the light board; A middle section of the flexible circuit board, covering at least the inclined section (321) of the light board; The middle section of the flexible circuit board connects the first end of the flexible circuit board and the second end of the flexible circuit board; A reflective sheet (500) is arranged on a side of the light board (300) and the flexible circuit board (400) facing the display panel (100).

2. The display device according to claim 1, wherein Along the direction from the first end of the light board to the second end of the light board, the distance between the light board inclined section (321) and the display panel (100) gradually increases.

3. The display device according to claim 2, wherein Along a first direction, the lamp board inclined section (321) is arranged at the middle section of the second surface (320) of the lamp board, and the first direction is perpendicular to the thickness direction of the display device.

4. The display device according to claim 3, wherein A chamfered structure (800) is provided at the connection between the inclined section (321) of the light board and the first surface (310) of the light board; And / or, a chamfer structure (800) is provided at the connection between the inclined section (321) of the light board and the third surface (330) of the light board.

5. The display device according to claim 3, characterized in that, The surface of the lamp panel inclined section (321) is uneven.

6. The display device according to claim 3, characterized in that The back plate (200) has: A backboard centerline (200d), along the second direction, the backboard centerline (200d) is arranged at the middle section of the backboard (200); A through hole (200a) is provided at the center line (200d) of the backplane; the number of the through holes (200a) is multiple, and the multiple through holes (200a) are sequentially arranged at intervals along the first direction; Wherein, 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.

7. The display device according to claim 6, wherein The through hole (200a) includes: A first through hole (200b), along the second direction, the first through hole (200b) is provided on the first side of the extension direction of the center line (200d) of the backplane; A second through hole (200c), along the second direction, the second through hole (200c) is provided on the second side opposite to the first side of the extension direction of the center line (200d) of the backplane; Wherein, the first through hole (200b) and the second through hole (200c) are not communicated with each other; the number of the first through holes (200b) is multiple, the number of the second through holes (200c) is multiple, and the multiple first through holes (200b) are arranged in one-to-one correspondence with the multiple second through holes (200c).

8. The display device according to claim 7, wherein The light board (300) includes: A first light board (350), along the second direction, the first light board (350) is provided on the first side of the extension direction of the center line (200d) of the backplane; the number of the first light boards (350) is multiple, and the multiple first light boards (350) are arranged in one-to-one correspondence with the multiple first through holes (200b); A second light board (360), along the second direction, the second light board (360) is provided on the second side opposite to the first side of the extension direction of the center line (200d) of the backplane; the number of the second light boards (360) is multiple, and the multiple second light boards (360) are arranged in one-to-one correspondence with the multiple second through holes (200c).

9. The display device according to claim 8, wherein: The light board inclined section (321) of the first light board (350) is arranged close to the first through hole (200b); And / or, the light board inclined section (321) of the second light board (360) is arranged close to the second through hole (200c).

10. The display device according to claim 8, characterized in that, Along the thickness direction of the display device, the orthographic projection of the light board inclined section (321) on the plane where the backplane (200) is located, the extension length T along the second direction satisfies: Wherein, K is the distance between the lamp body (340) at the outermost edge of the light board (300) and the through hole (200a).

11. A display device, characterized in that, Including: A display panel (100) for displaying images; A backplane (200) provided on the side of the display panel (100) away from the display side of the display panel (100); A light board (300) provided between the backplane (200) and the display panel (100), and the light board (300) is connected to the backplane (200); the light board (300) has: a first surface (310) of a light board; the first surface (310) of the light board faces the display panel (100); a light body (340) is provided on the first surface (310) of the light board; the light body (340) is used to provide light to the display panel (100); The second surface (320) of the light board has a light board inclined section (321); A third surface (330) of the light board; the third surface (330) of the light board is connected to the backboard (200); Along the thickness direction of the light board (300), the first surface (310) of the light board and the third surface (330) of the light board are arranged opposite to each other, and the second surface (320) of the light board connects the first surface (310) of the light board and the third surface (330) of the light board; The light board inclined section (321) comprises: A first end of the light board, along the thickness direction of the light board (300), the first end of the light board is close to the first surface (310) of the light board; The second end of the light board is close to the third surface (330) of the light board along the thickness direction of the light board (300); Along a direction perpendicular to the thickness of the lamp board (300), the second end of the lamp board is away from the lamp body (340) relative to the first end of the lamp board; A flexible circuit board (400), the flexible circuit board (400) being used to bend around the light board (300), the middle section of the flexible circuit board at least covering the inclined section (321) of the light board; The reflective sheet (500) is used to reflect the light from the lamp body (340).

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