Display device and method of servicing the same

Abstract

The application relates to a display device and a maintenance method thereof. The display device comprises a backlight module and a display panel. The backlight module is used for providing a light source for the display panel. The backlight module comprises a backlight unit and a rotating device connected with the backlight unit. The backlight unit comprises a heat dissipation plate and a lamp strip connected with the heat dissipation plate. When the backlight unit is in a working state, the rotating device drives the backlight unit to rotate, so that the light emitting surface of the lamp strip faces the display panel. When the backlight unit is in a maintenance state, the rotating device drives the backlight unit to reversely rotate, so that the light emitting surface of the lamp strip faces away from the display panel. The rotating device is arranged to control the state of the backlight unit, so that the lamp strip is arranged at different positions. The staff can conveniently maintain the backlight module, the maintenance process is simplified, the cost is reduced, and secondary pollution is avoided.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display device and a method for its maintenance. Background Technology

[0002] With advancements in display technology, mini-light emitting diodes (LEDs) are becoming the inevitable trend for high-end LCD screens. To achieve better display effects, the number of LED chips is increasing to meet the advantages of high dynamic range and thinness. However, as the number of LED chips increases, the probability of malfunctions also increases.

[0003] In related technologies, when LED beads malfunction, repair personnel need to disassemble the entire display device for repair. However, the repair process is cumbersome, costly, and prone to causing secondary pollution. Summary of the Invention

[0004] This application aims to provide a display device and its repair method to solve the technical problem in the prior art where, after the LED beads in the display device fail, the repair personnel need to disassemble the entire display device for repair, which causes a cumbersome repair process.

[0005] In a first aspect, embodiments of this application propose a display device, including a backlight module and a display panel. The backlight module is used to provide a light source to the display panel. The backlight module includes a backlight unit and a rotating device connected to the backlight unit. The backlight unit includes a heat sink and a light strip connected to the heat sink.

[0006] When the backlight unit is in working condition, the rotating device drives the backlight unit to rotate so that the light-emitting surface of the lamp strip faces the display panel; when the backlight unit is in maintenance condition, the rotating device drives the backlight unit to rotate in the opposite direction so that the light-emitting surface of the lamp strip faces away from the display panel.

[0007] In one possible implementation, the backlight module further includes a side plate arranged around the heat sink, and the rotating device includes a first transmission member connected to the heat sink and a second transmission member connected to the side plate. The first transmission member cooperates with the second transmission member to convert the linear motion of the second transmission member along a first direction into the rotational motion of the first transmission member, so as to drive the backlight unit to rotate. The first direction is the width direction of the heat sink.

[0008] In one possible implementation, the first transmission element is a gear and the second transmission element is a rack; or, the first transmission element is a worm gear and the second transmission element is a worm.

[0009] In one possible implementation, the shape of the surface in the backlight unit connected to the rotating device is a parallelogram.

[0010] In one possible implementation, a back plate is also included, and the rotating device further includes a first bolt and a second bolt. The first bolt and the second bolt are respectively located on both sides of the second transmission member along the first direction and are threadedly connected to the back plate. By tightening the first bolt or the second bolt, the second transmission member is pushed to move linearly along the first direction.

[0011] In one possible implementation, the back plate further includes a first groove for receiving a first bolt and a second groove for receiving a second bolt.

[0012] The head of the first bolt fits against the bottom surface of the first groove, and an adjustment gap is preset between the head of the second bolt and the bottom of the second groove so that the second transmission component can move linearly along the first direction.

[0013] In one possible implementation, the heat sink has protrusions at both ends along the second direction, and the rotating device is rotatably connected to the heat sink through the protrusions, with the second direction intersecting the first direction.

[0014] In one possible implementation, there are multiple backlight units, which are continuously distributed along a first direction, which is the width direction of the heat sink.

[0015] Secondly, embodiments of this application propose a method for repairing a backlight module. The backlight module includes a backlight unit and a rotating device connected to the backlight unit. The backlight unit includes a heat sink and a light strip connected to the heat sink. The method includes:

[0016] Obtain the working status information of the backlight unit.

[0017] If the backlight unit is malfunctioning, the backlight unit can be rotated by a rotating device to position the light strip on the backlight side for inspection.

[0018] After maintenance, the backlight unit is rotated in the opposite direction by a rotating device, so that the light strip is located on the light-emitting side, so that the backlight unit can work normally.

[0019] In one possible implementation, the backlight module further includes a back plate, which also includes a first groove and a second groove. The rotating device includes a first transmission component, a second transmission component, a first bolt, and a second bolt. An adjustment gap is preset between the head of the second bolt and the bottom of the second groove. The rotating device drives the backlight unit to rotate, positioning the light strip on the backlight side.

[0020] Loosen the first bolt.

[0021] Continue to tighten the second bolt until the head of the second bolt is in contact with the bottom surface of the second groove, so as to push the second transmission component to move in a straight line and drive the lamp strip to rotate to the backlight side.

[0022] Tighten the first bolt so that an adjustment gap is maintained between the head of the first bolt and the bottom of the first groove.

[0023] This application provides a display device and its maintenance method. The display device includes a backlight module and a display panel. The backlight module provides a light source to the display panel and includes a backlight unit and a rotating device connected to the backlight unit. The backlight unit includes a heat sink and a light strip connected to the heat sink. When the backlight unit is in operation, the rotating device drives the backlight unit to rotate so that the light-emitting surface of the light strip faces the display panel. When the backlight unit is in maintenance mode, the rotating device drives the backlight unit to rotate in the opposite direction so that the light-emitting surface of the light strip faces away from the display panel. By setting the rotating device to control the state of the backlight unit, the light strip can be placed in different positions, which facilitates the maintenance of the display device by the staff, simplifies the maintenance process, reduces costs, and avoids secondary pollution. Attached Figure Description

[0024] The features, advantages, and technical effects of exemplary embodiments of the present application will now be described with reference to the accompanying drawings. In the drawings, the same components are referred to by the same reference numerals. The drawings are not drawn to scale and are only used to illustrate relative positions. The layer thicknesses in some areas are exaggerated for ease of understanding; the layer thicknesses in the drawings do not represent actual layer thickness proportions.

[0025] Figure 1 This diagram shows a schematic representation of the display device provided in Embodiment 1 of this application.

[0026] Figure 2 This is a schematic diagram of a portion M of the backlight module in the display device provided in Embodiment 1 of this application;

[0027] Figure 3 This diagram shows the structure of the backlight module when the backlight unit provided in Embodiment 1 of this application is in working state;

[0028] Figure 4 This diagram shows the structure of the backlight module when the backlight unit provided in Embodiment 1 of this application is under maintenance.

[0029] Figure 5 This diagram shows a partial structural schematic of the backlight module when the backlight unit provided in Embodiment 1 of this application is in working state;

[0030] Figure 6 This diagram shows a partial structural schematic of the backlight module when the backlight unit provided in Embodiment 1 of this application is under maintenance.

[0031] Figure 7 This diagram illustrates the structure of the maintenance method for the backlight module provided in Embodiment 2 of this application.

[0032] Figure 8This diagram illustrates the structure of the maintenance method for the backlight module provided in Embodiment 3 of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100. Backlight module;

[0035] 10. Backlight unit; 11. Heat sink; 111. Protrusion; 12. LED strip; 121. Lamp board; 122. LED chip; 123. Reflective layer; 13. Side panel;

[0036] 20. Rotating device; 21. First transmission component; 22. Second transmission component; 23. First bolt; 24. Second bolt;

[0037] 30. Back panel; 31. First groove; 32. Second groove;

[0038] 200. Display panel. Detailed Implementation

[0039] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of the regional structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0040] In related technologies, when the LED beads in the backlight module malfunction, repair personnel need to disassemble the entire backlight module for repair. However, the repair process is cumbersome, costly, and prone to causing secondary pollution.

[0041] In view of this, the present application provides a display device and its maintenance method. By setting a rotating device, the state of the backlight unit is changed so that the lamp strip is in different positions, which facilitates the maintenance of the backlight module in the display device by the staff, simplifies the maintenance process, reduces costs, and avoids secondary pollution.

[0042] The specific structures of the backlight modules provided in the various embodiments of this application are described below with reference to the accompanying drawings.

[0043] First Embodiment

[0044] Figure 1 This diagram shows a schematic representation of the display device provided in Embodiment 1 of this application. Figure 2 This is a schematic diagram of the structure of a portion M of the backlight module in the display device provided in Embodiment 1 of this application.

[0045] See Figure 1 and Figure 2 This application provides a display device including a backlight module 100 and a display panel 200. The backlight module 100 is used to provide a light source to the display panel 200. The backlight module 100 includes a backlight unit 10 and a rotating device 20 connected to the backlight unit 10. The backlight unit 10 includes a heat sink 11 and a light strip 12 connected to the heat sink 11.

[0046] When the backlight unit 10 is in working condition, the rotating device 20 drives the backlight unit 10 to rotate so that the light-emitting surface of the lamp strip 12 faces the display panel 200; when the backlight unit 10 is in maintenance condition, the rotating device 20 drives the backlight unit 10 to rotate in the opposite direction so that the light-emitting surface of the lamp strip 12 is away from the display panel 200.

[0047] Specifically, Figure 3 This diagram shows the structure of the backlight module when the backlight unit provided in Embodiment 1 of this application is in working state; Figure 4 This diagram illustrates the structure of the backlight module when the backlight unit provided in Embodiment 1 of this application is under maintenance. Figure 3 and Figure 4 As shown, in the working state, the LED strip 12 is located above the heat sink 11, that is, the LED strip 12 is located on the light-emitting side; in the maintenance state, the LED strip 12 is located below the heat sink 11, that is, the LED strip 12 is located on the backlight side. The backlight unit 10 is in the working state when it is working normally, and in the maintenance state when the backlight unit 10 malfunctions and needs to be repaired by staff or periodically inspected.

[0048] The heat sink 11 is generally made of aluminum plate, copper plate or graphite patch. When the light strip 12 is working, it generates a lot of heat. The generated heat is transferred through the heat sink 11 to the air on the other side of the heat sink 11 and exchanges heat with the outside air, ultimately achieving the purpose of heat dissipation.

[0049] In this embodiment, a rotating device 20 connected to the backlight unit 10 is provided. The backlight unit 10 includes a heat sink 11 and an LED strip 12 connected to the heat sink 11. When the backlight unit 10 is in operation, the rotating device 20 drives the backlight unit 10 to rotate so that the LED strip 12 faces the display panel 200. When the backlight unit 10 is under maintenance, the rotating device 20 drives the backlight unit 10 to rotate in the opposite direction so that the LED strip 12 faces away from the display panel 200. When the backlight module 100 malfunctions or needs maintenance, the rotating device 20 positions the LED strip 12 in the backlight unit 10 below the heat sink 11, facilitating worker operations, simplifying the maintenance process, reducing costs, and preventing secondary pollution.

[0050] In some embodiments, the backlight module 100 further includes a side plate 13 disposed around the heat sink 11, and the rotating device 20 includes a first transmission member 21 connected to the heat sink 11 and a second transmission member 22 connected to the side plate 13. The first transmission member 21 cooperates with the second transmission member 22 to convert the linear motion of the second transmission member 22 along a first direction into the rotational motion of the first transmission member 21, so as to drive the backlight unit 11 to rotate. The first direction is the width direction of the heat sink 11.

[0051] Specifically, the second transmission component 22 moves linearly along the first direction, causing the first transmission component 21 meshing with the second transmission component 22 to rotate. The rotation of the first transmission component 21 causes the heat sink 11 connected to the first transmission component 21 to rotate, thus causing the lamp strip 12 to rotate, thereby putting the backlight unit 10 into a working state or a maintenance state.

[0052] For example, the first transmission component 21 is a gear and the second transmission component 22 is a rack; or, the first transmission component 21 is a worm gear and the second transmission component 22 is a worm. This application does not specifically limit the structure of the first transmission component 21 and the second transmission component 22.

[0053] In some embodiments, the surface of the backlight unit 10 connected to the rotating device 20 is a parallelogram. When the backlight module 100 is in operation, the gap between the backlight units 10 forms an angle with the light emission direction, which can prevent light from being exposed from the other side of the heat sink 11.

[0054] In some embodiments, a back plate 30 is also included. The rotating device 20 further includes a first bolt 23 and a second bolt 24. The first bolt 23 and the second bolt 24 are respectively located on both sides of the second transmission member 22 along the first direction and are threadedly connected to the back plate 30. By turning the first bolt 23 or the second bolt 24, the second transmission member 22 is pushed to move linearly along the first direction.

[0055] Specifically, tightening the first bolt 23 or the second bolt 24 causes the second transmission component 22 to move linearly along the first direction, thereby driving the first transmission component 21 to rotate, thus causing the backlight unit 10 to rotate and enter a working or maintenance state.

[0056] In some embodiments, the back plate 30 further includes a first groove 31 for accommodating a first bolt 23 and a second groove 32 for accommodating a second bolt 24. The head of the first bolt 23 is in contact with the bottom surface of the first groove 31, and an adjustment gap is preset between the head of the second bolt 24 and the bottom of the second groove 32, so that the second transmission member 22 can move linearly along the first direction.

[0057] Specifically, the local structure of the backlight module when the backlight unit 10 is in working state is as follows: Figure 5As shown, Figure 5 This is a partial structural diagram of the backlight module 100 when the backlight unit 10 provided in Embodiment 1 of this application is in working state.

[0058] The back plate 30 is provided with a first groove 31 and a second groove 32 along the direction of the second transmission member 22, which are used to fix the head of the first bolt 23 and the head of the second bolt 24, respectively. The distance from the bottom of the first groove 31 to the bottom of the second groove 32 is less than the sum of the length of the first bolt 23, the length of the second bolt 24 and the length of the second transmission member 22.

[0059] When the backlight unit 10 is in working condition, the head of the first bolt 23 is completely attached to the bottom of the first recess, and the head of the second bolt 24 is located in the second groove 32, but the bottom of the second bolt 24 is not attached to the bottom of the second groove 32.

[0060] The adjustment gap is used to create space for tightening the second bolt 24. After tightening the second bolt 24, the head of the second bolt 24 fits against the bottom of the second groove 32. Tightening the second bolt 24 causes the second transmission component 22 to move.

[0061] When the backlight unit 10 is under maintenance, the local structure of the backlight module is as follows: Figure 6 As shown, Figure 6 This diagram shows a partial structural schematic of the backlight module 100 when the backlight unit 10 provided in Embodiment 1 of this application is under maintenance.

[0062] The head of the second bolt 24 is completely fitted to the bottom of the second recess, and the head of the first bolt 23 is located in the first groove 31, but the bottom of the first bolt 23 is not fitted to the bottom of the first groove 31.

[0063] In some embodiments, the heat sink 11 has protrusions 111 at both ends along the second direction, and the rotating device 20 is rotatably connected to the heat sink 11 through the protrusions 111, and the second direction intersects with the first direction.

[0064] For example, protrusion 111 is keyed to the first transmission member 21 in the rotating device 20.

[0065] Specifically, the protrusion 111 is located at the center of the surface to ensure that the space required for the backlight unit 10 to rotate through the rotating device 20 is minimized, and to balance the external force required for the backlight unit 10 to switch from working state to maintenance state or from maintenance state to working state.

[0066] In some embodiments, the number of backlight units 10 is multiple, and the multiple backlight units 10 are continuously distributed along a first direction, which is the width direction of the heat sink 11.

[0067] The rotating device 20 includes a plurality of first transmission members 21 that are respectively connected to the protrusions 111 of a plurality of heat sinks 11 and a second transmission member 22 that meshes with the plurality of first transmission members 21. The second transmission member 22 is capable of converting its linear motion along a first direction into the rotational motion of the plurality of first transmission members 21.

[0068] The protrusion 111 is located at the center of the surface, and there are multiple backlight units 10, which reduces the space required for the backlight unit 10 to rotate, thus balancing the external force required when the backlight unit 10 changes from working state to maintenance state or vice versa. Since there are multiple backlight units 10, the external force required for the backlight unit 10 to rotate can be reduced.

[0069] In some embodiments, the light strip 12 includes a light panel 121, LED beads 122 located on the light panel 121, and a reflective layer 123 located on the light panel 121, wherein the orthographic projection of the LED beads 122 on the light panel 121 and the orthographic projection of the reflective layer 123 on the light panel 121 do not overlap.

[0070] The lamp panel is electrically connected to the lamp beads, and the reflective layer 123 can be made of a plastic material, such as polyethylene terephthalate (PET), polycarbonate (PC), or polystyrene (PS). The reflective layer 123 may also include a high-reflectivity coating, such as titanium dioxide (TiO2), applied to the plastic material to increase the light reflectance coefficient.

[0071] In this embodiment, by setting a rotating device 20, the backlight unit 10 can be switched from working state to maintenance state or from maintenance state to working state. Even if the light strip 12 is in different positions, it is convenient for staff to maintain the backlight module 100, simplify the maintenance process, reduce costs, and avoid secondary pollution.

[0072] Second Embodiment

[0073] Figure 7 This diagram illustrates the structural schematic of the maintenance method for the backlight module 100 provided in Embodiment 2 of this application; as shown Figure 7 As shown, this application provides a method for repairing a backlight module 100, applied in a display module. The backlight module 100 includes a backlight unit 10 and a rotating device 20 connected to the backlight unit 10. The backlight unit 10 includes a heat sink 11 and a light strip 12 connected to the heat sink 11. The method includes:

[0074] Step S101: Obtain the working status information of the backlight unit 10.

[0075] The working status information includes the working status information when the backlight unit is in working state and the maintenance status information when it is in maintenance state. The working status information also includes the working duration. If the working duration exceeds a preset time threshold, the backlight unit 10 needs to be maintained to detect faults in advance and avoid losses caused by backlight unit 10 failures.

[0076] Step S102: If the backlight unit's working status information is abnormal, the backlight unit 10 is rotated by the rotating device 20 so that the light strip 12 is located on the backlight side, so as to inspect the backlight unit 10.

[0077] In this embodiment, an abnormal working state is defined as the backlight unit being under maintenance.

[0078] Step S103: After the maintenance is completed, the backlight unit 10 is rotated in the opposite direction by the rotating device 20, so that the lamp strip 12 is located on the light-emitting side, so that the backlight unit 10 can work normally.

[0079] When the backlight unit 10 is in working condition, the rotating device 20 drives the backlight unit 10 to rotate so that the lamp strip 12 is located on the light-emitting side. When the backlight unit 10 is in maintenance condition, the rotating device 20 drives the backlight unit 10 to rotate so that the lamp strip 12 is located on the backlight side.

[0080] Specifically, in the working state, the LED strip 12 is located above the heat sink 11, that is, the LED strip 12 is located on the light-emitting side; in the maintenance state, the LED strip 12 is located below the heat sink 11, that is, the LED strip 12 is located on the backlight side. The backlight unit 10 is in the working state when it is working normally, and in the maintenance state when the backlight unit 10 malfunctions and needs to be repaired by staff or periodically inspected.

[0081] The heat sink 11 is generally made of aluminum plate, copper plate or graphite patch. When the light strip 12 is working, it generates a lot of heat. The generated heat is transferred through the heat sink 11 to the air on the other side of the heat sink 11 and exchanges heat with the outside air, ultimately achieving the purpose of heat dissipation.

[0082] In this embodiment, by acquiring the working status information of the backlight unit 10 and then adjusting the status of the backlight unit 10 by the rotating device 20, when the backlight module 100 malfunctions or needs to be repaired, the lamp strip 12 in the backlight unit 10 is placed under the heat sink 11, which facilitates the operation of the staff, simplifies the maintenance process, reduces costs, and avoids secondary pollution.

[0083] Third Embodiment

[0084] Figure 8 This diagram illustrates the structural schematic of the maintenance method for the backlight module 100 provided in Embodiment 3 of this application; as shown Figure 8As shown, this application provides a maintenance method for a backlight module 100, applied in a display module. The backlight module 100 is the same as in Embodiment 2, wherein the backlight module 100 further includes a back plate 30, the back plate 30 further includes a first groove 31 and a second groove 32, and the rotating device 20 includes a first transmission member 21, a second transmission member 22, a first bolt 23 and a second bolt 24, and an adjustment gap is preset between the head of the second bolt 24 and the bottom of the second groove 32. Specifically, in Embodiment 2, step S102, which drives the backlight unit 10 to rotate by the rotating device 20 and positions the lamp strip 12 on the backlight side, includes:

[0085] Step S201: Loosen the first bolt 23.

[0086] The back plate 30 is provided with a first groove 31 and a second groove 32, which are used to fix the head of the first bolt 23 and the head of the second bolt 24, respectively. The distance from the bottom of the first groove 31 to the bottom of the second groove 32 is less than the sum of the length of the first bolt 23, the length of the second bolt 24 and the length of the second transmission member 22.

[0087] When the backlight unit 10 is in working condition, the head of the first bolt 23 is completely attached to the bottom of the first recess, and the head of the second bolt 24 is located in the second groove 32, but the bottom of the second bolt 24 is not attached to the bottom of the second groove 32.

[0088] Step S202: Continue to tighten the second bolt 24 until the head of the second bolt 24 is in contact with the bottom surface of the second groove 32, so as to push the second transmission component 22 to move in a straight line and drive the lamp strip 12 to rotate to the backlight side.

[0089] Step S203: Tighten the first bolt 23 so that the head of the first bolt 23 and the bottom of the first groove 31 maintain an adjustment gap.

[0090] At this time, the head of the second bolt 24 is completely fitted to the bottom of the second recess, and the head of the first bolt 23 is located in the first groove 31, but the bottom of the first bolt 23 is not fitted to the bottom of the first groove 31.

[0091] In this embodiment, the state of the backlight unit 10 is adjusted by moving the first bolt 23 and the second bolt 24, so that the backlight unit 10 is changed from the working state to the maintenance state. That is, when the backlight module 100 malfunctions or needs maintenance, the lamp strip 12 in the backlight unit 10 is placed under the heat sink 11, which facilitates the operation of the staff, simplifies the maintenance process, reduces costs, and avoids secondary pollution.

[0092] It is understood that the array substrate technical solutions provided in the embodiments of this application can be widely used in various liquid crystal display panels, such as TN (Twisted Nematic) display panels, IPS (In-Plane Switching) display panels, VA (Vertical Alignment) display panels, and MVA (Multi-Domain Vertical Alignment) display panels.

[0093] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0094] As used herein, the term "substrate" refers to the material on which subsequent material layers are added. The substrate itself may be patterned. The material added on top of the substrate may be patterned or may remain unpatterned. Furthermore, the substrate may comprise a wide range of materials, such as silicon, germanium, gallium arsenide, indium phosphide, etc. Alternatively, the substrate may be made of a non-conductive material (e.g., glass, plastic, or sapphire wafers).

[0095] The term "layer" as used herein can refer to a portion of material comprising a region of thickness. A layer may extend over the entire underlying or overlying structure, or may have a extent smaller than that of the underlying or overlying structure. Furthermore, a layer may be a region of a homogeneous or non-homogeneous continuous structure, with a thickness less than that of the continuous structure. For example, a layer may be located between the top and bottom surfaces of a continuous structure, or between any pairs of lateral planes at the top and bottom surfaces. A layer may extend laterally, vertically, and / or along a tapered surface. A substrate may be a layer, and may include one or more layers, and / or may have one or more layers located on, above, and / or below it. A layer may include multiple layers. For example, an interconnect layer may include one or more conductor and contact layers (forming contacts, interconnects, and / or vias therein) and one or more dielectric layers.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display device comprising a backlight module and a display panel, wherein the backlight module is used to provide a light source to the display panel, characterized in that, The backlight module includes a backlight unit and a rotating device connected to the backlight unit. The backlight unit includes a heat sink and a light strip connected to the heat sink. When the backlight unit is in working condition, the rotating device drives the backlight unit to rotate so that the light-emitting surface of the lamp strip faces the display panel; when the backlight unit is in maintenance condition, the rotating device drives the backlight unit to rotate in the opposite direction so that the light-emitting surface of the lamp strip faces away from the display panel. The backlight module also includes a side plate arranged around the heat sink. The rotating device includes a first transmission component connected to the heat sink and a second transmission component connected to the side plate. The first transmission component cooperates with the second transmission component to convert the linear motion of the second transmission component along a first direction into the rotational motion of the first transmission component, so as to drive the backlight unit to rotate. The first direction is the width direction of the heat sink. The rotating device further includes a first bolt and a second bolt, which are located on both sides of the second transmission member along the first direction and are threadedly connected to the back plate. By turning the first bolt or the second bolt, the second transmission member is pushed to move linearly along the first direction. The back plate also includes a first groove for receiving the first bolt and a second groove for receiving the second bolt. The head of the first bolt fits against the bottom surface of the first groove, and an adjustment gap is preset between the head of the second bolt and the bottom of the second groove, so that the second transmission component can move linearly along the first direction.

2. The display device according to claim 1, characterized in that, The first transmission component is a gear, and the second transmission component is a rack; or, the first transmission component is a worm gear, and the second transmission component is a worm.

3. The display device according to claim 1, characterized in that, The surface of the backlight unit connected to the rotating device is a parallelogram.

4. The display device according to claim 1, characterized in that, The heat sink has protrusions at both ends along the second direction, and the rotating device is rotatably connected to the heat sink through the protrusions. The second direction intersects the first direction.

5. The display device according to any one of claims 1 to 4, characterized in that, The number of backlight units is multiple, and the multiple backlight units are continuously distributed along a first direction, which is the width direction of the heat sink.

6. A method for repairing a display device, characterized in that, Applied to a display device as described in any one of claims 1-5, the backlight module includes a backlight unit and a rotating device connected to the backlight unit, the backlight unit including a heat sink and a light strip connected to the heat sink; the method includes: Obtain the operating status information of the backlight unit; If the backlight unit is in an abnormal working state, the rotating device drives the backlight unit to rotate, so that the light strip is located on the backlight side, so as to repair the backlight unit. After maintenance, the backlight unit is rotated in the opposite direction by the rotating device, so that the light strip is located on the light-emitting side, so that the backlight unit can work normally.

7. The maintenance method for the display device according to claim 6, characterized in that, The backlight module further includes a back plate, which includes a first groove and a second groove. The rotating device includes a first transmission component, a second transmission component, a first bolt, and a second bolt. An adjustment gap is preset between the head of the second bolt and the bottom of the second groove. The step of rotating the backlight unit to rotate via the rotating device, thereby positioning the light strip on the backlight side, includes: Loosen the first bolt; Continue to tighten the second bolt until the head of the second bolt is in contact with the bottom surface of the second groove, so as to push the second transmission component to move in a straight line and drive the lamp strip to rotate to the backlight side; Tighten the first bolt so that an adjustment gap is maintained between the head of the first bolt and the bottom of the first groove.

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