A display device

Abstract

The application relates to the technical field of display devices, and discloses a display device, which comprises a back plate, the back plate being conductive, the back plate comprising a bottom plate; a first lamp strip, the first lamp strip being located on a first side of the bottom plate, the first lamp strip comprising a first circuit board, a driving unit and a first connector; wherein one side of the first circuit board, which is away from the bottom plate, is provided with a first grounding terminal, the driving unit is located on the side of the first circuit board, which is away from the bottom plate, a grounding end of the driving unit is electrically connected with the first grounding terminal, the first connector is connected with an end portion of the first circuit board, the first connector comprises a shell, the shell being conductive, the shell being in contact with the first grounding terminal, one side of the shell, which faces the bottom plate, is provided with a grounding portion, and the grounding portion is in contact with the bottom plate; a printed circuit board, the printed circuit board being located on a side of the bottom plate, which is away from the first lamp strip, the printed circuit board being provided with a second grounding terminal, and the second grounding terminal being electrically connected with the bottom plate. The display device can reduce costs and increase efficiency and is suitable for the design of a narrow lamp strip.

Description

Technical Field

[0001] This application relates to the field of display device technology, and particularly to display apparatus. Background Technology

[0002] MiniLED display technology has become a hot topic in LCD display devices as a backlight. Unlike traditional LCD devices that use a side-lit backlight solution with a light guide plate, it uses a large number of MiniLED chips as the backlight source in the module backlight field. This not only enables the backlight to be thinner, but also allows for more precise dynamic control and improves the dynamic contrast of the LCD display.

[0003] In display devices using a large number of MiniLED chips as backlights, the LED strips are mounted on the base plate of the back panel. The ground (GND) terminal of the IC driver chip on the LED strip typically needs to be connected to the power supply ground (GND) through a long FFC line. The long FFC line has a high resistance, resulting in a large voltage difference between the IC driver chip on the LED strip and the power supply. Typically, an FFC line length of 1.5m will cause a large voltage drop, affecting the normal operation of the IC driver chip. Utility Model Content

[0004] This application provides a display device that can reduce costs and increase efficiency and is suitable for narrow light strip designs.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A display device, comprising:

[0007] A backplate, the backplate being conductive, the backplate comprising:

[0008] Base plate;

[0009] A first light strip, located on a first side of the base plate, comprising:

[0010] A first circuit board, wherein the side of the first circuit board opposite to the base plate has a first grounding terminal;

[0011] A driving unit is located on the side of the first circuit board away from the base plate, and the grounding terminal of the driving unit is electrically connected to the first grounding terminal.

[0012] A first connector is connected to an end of the first circuit board, and the first connector includes:

[0013] The housing is conductive and is in contact with the first grounding terminal. The housing has a grounding portion on the side facing the base plate, and the grounding portion is in contact with the base plate.

[0014] A printed circuit board is located on the side of the base plate away from the first light strip. The printed circuit board has a second grounding terminal, which is electrically connected to the base plate.

[0015] The display device in the above technical solution has the following beneficial effects: The first light strip includes a first circuit board, a driving unit, and a first connector. The first circuit board has a first grounding terminal, and the grounding terminal of the driving unit is electrically connected to the first grounding terminal. Since the outer shell of the first connector contacts the first grounding terminal, and the side of the outer shell facing the base plate has a grounding part that contacts the base plate, the first grounding terminal can be effectively connected to the back plate through the outer shell, effectively reducing the voltage difference between the grounding terminal of the driving unit and the grounding terminal of the printed circuit board, and reducing driving failures. Compared with related technologies, the first light strip and the back plate do not need to be connected by screws, which can reduce costs and increase efficiency. In addition, eliminating the screw holes on the first circuit board can provide more space for the traces on the first circuit board, thereby reducing the width of the first circuit board, which is suitable for the design of narrow light strips.

[0016] In some embodiments of this application, the grounding portion is a protruding structure located on the side of the housing facing the base plate.

[0017] The display device in the above technical solution has the following beneficial effects: the grounding part is a protruding structure on the outer shell of the first connector, which facilitates the contact between the side of the first outer shell facing the base plate and the base plate, and is conducive to the conduction between the first grounding terminal and the back plate.

[0018] In some embodiments of this application, the grounding portion is cut from a portion of the housing.

[0019] The display device in the above technical solution has the following beneficial effects: the grounding part on the first connector is cut from a portion of the housing, which can be made using existing connectors, thus saving materials and reducing production costs.

[0020] In some embodiments of this application, the side of the base plate facing the housing includes:

[0021] A recessed portion is provided opposite to the grounding portion, the grounding portion is inserted into the recessed portion, and the surface of the grounding portion is in contact with the inner wall of the recessed portion.

[0022] The display device in the above technical solution has the following beneficial effects: the grounding part on the outer shell of the first connector is inserted into the recess on the back plate, which can increase the contact area between the grounding part of the first connector and the back plate, making it easier for the first grounding terminal to conduct with the back plate; and when the first light strip is assembled onto the back plate, the grounding part on the first connector and the insertion part of the recess on the back plate can be used to easily position the assembly position of the first light strip, resulting in high installation efficiency and improved production efficiency of the display device.

[0023] In some embodiments of this application, the outer side of the housing includes:

[0024] The housing is fixedly connected to the first circuit board via the fixing foot, and the fixing foot is in contact with the first grounding terminal.

[0025] The display device in the above technical solution has the following beneficial effects: the first connector can be fixedly connected to the first circuit board through the fixing feet on the housing, and the fixing feet can contact the first grounding terminal, which can realize the contact between the housing of the first connector and the first grounding terminal. The structure is simple, and the first connector can be made using existing connector materials, which can save materials and thus save production costs.

[0026] In some embodiments of this application, the outer casing is a metal casing.

[0027] The display device in the above technical solution has the following advantages: the outer shell can be a metal shell, the material is simple, easy to manufacture, and does not affect the manufacturing cost.

[0028] In some embodiments of this application, it also includes:

[0029] A signal connection line, wherein the first end of the signal connection line is connected to the signal of the printed circuit board, and the second end of the signal connection line is connected to the signal of the first circuit board.

[0030] The display device in the above technical solution has the following beneficial effects: the drive signal and power signal emitted from the printed circuit board can be transmitted to the first circuit board through the signal connection line, which can realize the control of the state of the first light strip.

[0031] In some embodiments of this application, the second end of the signal connection line has a signal connector, which is engaged with the first connector to enable signal connection between the second end of the signal connection line and the first circuit board.

[0032] The display device in the above technical solution has the following beneficial effects: the first connector of the first light strip can be plugged into and cooperate with the signal connector on the signal connection line, so that the first light strip can be directly connected to the printed circuit board through the signal connection line, thereby realizing signal transmission between the printed circuit board and the first light strip.

[0033] In some embodiments of this application, it also includes:

[0034] A second light strip, located on a first side of the base plate, comprises:

[0035] Second circuit board;

[0036] The second connector is connected to the end of the second circuit board and is plugged into the first connector to enable signal connection between the first circuit board and the second circuit board;

[0037] The second end of the signal connection line is connected to the signal of the second circuit board, so as to realize the signal connection between the second end of the signal connection line and the signal of the first circuit board.

[0038] The display device in the above technical solution has the following beneficial effects: the second connector on the second light strip is plugged into and cooperates with the first connector on the first light strip, the signal connection line is connected to the second circuit board of the second light strip, the printed circuit board can transmit the driving signal to the first light strip through the second light strip, and the grounding signal transmitted on the housing of the first connector can be transmitted to the second light strip through the second connector, thereby realizing the signal transmission between the two connected light strips.

[0039] In some embodiments of this application, the printed circuit board has a second grounding terminal on the side facing away from the base plate;

[0040] The display device further includes:

[0041] Grounding element, the grounding element comprising:

[0042] The contact portion is in contact with the second grounding terminal;

[0043] A grounding rod is connected to the contact portion, and the grounding rod passes through the printed circuit board and is inserted into the base plate so that the second grounding terminal is electrically connected to the back plate.

[0044] The display device in the above technical solution has the following beneficial effects: the second grounding terminal on the printed circuit board can be connected to the back plate through the grounding component, the contact part of the grounding component contacts the second grounding terminal, and the grounding rod of the grounding component passes through the printed circuit board and is inserted into the base plate, so that the grounding end of the driving unit on the lamp strip can contact the back plate through the housing of the first connector, and contact the grounding component on the printed circuit board through the back plate to complete the grounding. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of a display device provided in related technologies;

[0046] Figure 2 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0047] Figure 3 A cross-sectional view of a first connector provided in an embodiment of this application;

[0048] Figure 4 This is a planar schematic diagram of a first connector provided in an embodiment of this application;

[0049] Figure 5 A plan view of another first connector provided in an embodiment of this application;

[0050] Figure 6 A cross-sectional view of another first connector provided in an embodiment of this application;

[0051] Figure 7 for Figure 2 A magnified view of region A in the middle;

[0052] Figure 8 This is a schematic diagram of the structure of a first connector provided in an embodiment of this application;

[0053] Figure 9 A plan view of a backplate and light strip assembly provided in an embodiment of this application;

[0054] Figure 10 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0055] Figure 11 This application provides a schematic diagram of a structure for connecting two light strips according to an embodiment of the present application;

[0056] Figure 12 This is a schematic diagram of the structure of a second connector provided in an embodiment of this application;

[0057] Figure 13 for Figure 10 A magnified view of region B in the middle.

[0058] icon:

[0059] 1-Backplate; 11-Baseplate; 111-Recessed portion; 2-First LED strip; 21-First circuit board; 22-First connector; 221-Housing; 2211-Grounding portion; 2212-Fixing foot; 2213-Pin; 3-Printed circuit board; 31-Grounding component; 311-Contact portion; 312-Grounding rod; 4-Signal connection line; 41-Signal connector; 5-Second LED strip; 51-Second circuit board; 52-Second connector; 6-Double-sided tape. Detailed Implementation

[0060] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0061] A liquid crystal display device includes a backlight and a liquid crystal display panel located on the light-emitting side of the backlight. In related technologies, the backlight structure in a liquid crystal display device can be as follows: Figure 1 As shown, it includes a backplate 01 and an LED strip 02 disposed on the backplate 01. By grounding (GND) by screwing a screw into the LED strip 02, the ground signal of the IC driver chip on the LED strip 02 is connected to the backplate 02 through the screw 03. Then, the backplate 02 is connected to the grounding screw 05 of the power board 04, which can effectively reduce the voltage drop.

[0062] However, grounding the LED strip 02 with screws would increase the manufacturing cost of the display device and reduce its assembly efficiency. Furthermore, the LED strip design is trending towards narrower strips, and larger screw holes would affect the routing of traces on the circuit board, reducing the width of the circuit board and increasing costs.

[0063] To address the aforementioned technical problems, this application provides a display device, such as... Figure 2 As shown, it includes:

[0064] Back plate 1, back plate 1 is conductive, back plate 1 includes base plate 11;

[0065] The first light strip 2 is located on the first side of the base plate 11. The first light strip 2 includes a first circuit board 21, a driving unit and a first connector 22.

[0066] The first circuit board 21 has a first grounding terminal on the side away from the base plate 11. The driving unit is located on the side of the first circuit board 21 away from the base plate 11. The grounding terminal of the driving unit is electrically connected to the first grounding terminal. The first connector 22 is connected to the end of the first circuit board 21. The first connector 22 includes a housing 221. The housing 221 is conductive and contacts the first grounding terminal. The side of the housing 221 facing the base plate 11 has a grounding part 2211, which contacts the base plate 11.

[0067] Printed circuit board 3 is located on the side of the base plate 11 away from the first light strip 2. Printed circuit board 3 has a second grounding terminal, which is electrically connected to the base plate 11.

[0068] In the display device provided in this application embodiment, the first light strip 2 includes a first circuit board 21, a driving unit, and a first connector 22. The first circuit board 21 has a first ground terminal, and the ground terminal of the driving unit is electrically connected to the first ground terminal. Since the outer shell 221 of the first connector 22 is in contact with the first ground terminal, the outer shell 221 has a ground part 2211 on the side facing the base plate 11. The ground part 2211 is in contact with the base plate 11. The outer shell 221 can effectively make the first ground terminal and the back plate 1 conduct through the outer shell 221, effectively reducing the voltage difference between the ground terminal of the driving unit and the ground terminal of the printed circuit board 3, and reducing driving failure.

[0069] Compared with related technologies, in the above-mentioned display device, the first light strip 2 and the back plate 1 do not need to be connected by screws, which can reduce costs and increase efficiency. Furthermore, eliminating the screw holes on the first circuit board 21 can provide more space for the wiring on the first circuit board 21, thereby reducing the width of the first circuit board 21, which is suitable for the design of narrow light strips.

[0070] Specifically, the material of the back plate 1 can be metal, and the back plate 1 can be manufactured by sheet metal processing; or, the material of the back plate 1 can also be other conductive materials, which is not limited here and depends on the actual situation.

[0071] Specifically, such as Figure 2 As shown, the back plate 1 may include a bottom plate 11 and multiple side plates. The side plates may be connected to the edge of the bottom plate 11. The multiple side plates may cooperate with the bottom plate 11 to form a receiving cavity. The first side of the bottom plate 11 may be the side of the bottom plate 11 facing the receiving cavity.

[0072] The first circuit board 21 of the first light strip 2 can be bonded to the base plate 11 by double-sided tape 6, thereby fixing the first light strip 2 on the base plate 11.

[0073] In this embodiment of the application, the first light strip 2 also includes a plurality of light-emitting units located on the side of the first circuit board 21 away from the base plate 11, and the driving unit is used to signal connect with the plurality of light-emitting units, and the driving unit can drive the light-emitting state of the light-emitting units.

[0074] Specifically, the first circuit board 21 can be a printed circuit board 3. The driving unit on the first circuit board 21 can be an IC driver chip, and the light-emitting unit can be an LED light-emitting chip.

[0075] Specifically, the housing 221 of the first connector 22 facing the base plate 11 may have one grounding part 2211 or multiple grounding parts 2211. There is no limitation here, and it depends on the actual situation.

[0076] The first connector 22 also includes multiple pins 2213, which are connected to the signal terminals at the end of the first circuit board 21, enabling signal transmission between the first connector 22 and the first circuit board 21.

[0077] The first connector 22 can be a female terminal connector.

[0078] In this embodiment, the grounding portion 2211 can be a protruding structure on the side of the outer shell 221 of the first connector 22 facing the base plate 11.

[0079] In the aforementioned display device, such as Figure 3 As shown, the grounding part 2211 is a protruding structure on the outer shell 221 of the first connector 22, which facilitates the contact between the side of the first outer shell 221 facing the base plate 11 and the base plate 11, which is beneficial to the conduction between the first grounding terminal and the back plate 1.

[0080] Specifically, the grounding portion 2211 can be cut from a portion of the housing 221. The grounding portion 2211 on the first connector 22 can be cut from a portion of the housing 221, which can be made using existing connectors, saving materials and reducing production costs.

[0081] like Figure 3 As shown, the grounding part 2211 may include two branches. The first end of each branch is connected to the housing 221 of the first connector 22. There is a preset angle between the branch and the surface of the housing 221 facing the base plate 11. The second ends of the two branches are connected and there is a certain angle between the two branches.

[0082] The aforementioned grounding portion 2211 can be located along the outer shell 221 of the first connector 22. Figure 4The path shown by the dashed line is cut to form two connected branches, and the first ends of the two branches are bent so that they have a preset angle with the surface of the outer shell 221 facing the base plate 11, forming a structure that protrudes from the outer shell 221, which is conducive to the contact between the grounding part 2211 and the base plate 11.

[0083] The shape of the grounding portion 2211, which is cut from a portion of the outer casing 221, can be not only as... Figure 3 As shown, it can also be cut into other shapes; there are no restrictions here, it depends on the situation.

[0084] Alternatively, the grounding part 2211 can also be a protrusion located on the side of the housing 221 facing the base plate 11, which has a simple structure and is easy to manufacture a mold for forming the first connection part.

[0085] Specifically, such as Figure 5 and Figure 6 As shown, the grounding portion 2211 can be a hemispherical protrusion formed on the outer casing 221; or, the grounding portion 2211 can also be a columnar protrusion, a boss-shaped protrusion, etc., formed on the outer casing 221. The shape of the protrusion is not limited here and depends on the actual situation.

[0086] In the embodiments of this application, such as Figure 2 and Figure 7 As shown, the side of the base plate 11 facing the outer casing 221 may include a recess 111, which may be disposed opposite to the grounding part 2211. The grounding part 2211 is inserted into the recess 111, and the surface of the grounding part 2211 contacts the inner wall of the recess 111.

[0087] In the above-mentioned display device, the grounding part 2211 on the housing 221 of the first connector 22 is inserted into the recess 111 on the back plate 1, which can increase the contact area between the grounding part 2211 of the first connector 22 and the back plate 1, and facilitate the first grounding terminal to conduct with the back plate 1.

[0088] Furthermore, when assembling the first light strip 2 onto the back plate 1, the grounding part 2211 on the first connector 22 cooperates with the insertion part of the recessed part 111 on the back plate 1, which facilitates the positioning of the assembly position of the first light strip 2, resulting in high installation efficiency and improved production efficiency of the display device.

[0089] In addition, in the above-mentioned display device, since the housing 221 of the first connector 22 contacts the back plate 1, the grounding signal between the first light strip and the back plate 1 is connected and the light strip is positioned. The screw holes and positioning protrusions on the back plate 1 are eliminated, the structural design of the back plate 1 is simpler and easier to manufacture. At the same time, the same back plate 1 can be compatible with more optical solutions.

[0090] Specifically, the shape of the recess 111 on the base plate 11 needs to match the shape of the grounding portion 2211 on the first connector 22. There are no restrictions here, and it depends on the actual situation.

[0091] In the embodiments of this application, such as Figure 8 As shown, the outer side of the housing 221 may include a fixing foot 2212. The housing 221 is fixedly connected to the first circuit board 21 through the fixing foot 2212, and the fixing foot 2212 is in contact with the first grounding terminal.

[0092] In the above-mentioned display device, the first connector 22 can be fixedly connected to the first circuit board 21 through the fixing foot 2212 on the housing 221. The fixing foot 2212 can contact the first grounding terminal, which enables the housing 221 of the first connector 22 to contact the first grounding terminal. The structure is simple, and the first connector 22 can be made using existing connector materials, which can save materials and thus save production costs.

[0093] Specifically, the first connector 22 may have fixing feet 2212 on both sides along the width direction of the first circuit board 21. The fixing feet 2212 may be located on the side of the first circuit board 21 away from the base plate 11. By passing screws through the fixing feet 2212 and then threading them to the first circuit board 21, the first connector 22 and the first circuit board 21 can be fixedly connected, ensuring that the first connector 22 does not fall off the first circuit board 21.

[0094] Specifically, on the first circuit board 21, the number of first grounding terminals can be one or at least two; one fixing foot 2212 on the housing 221 of the first connector 22 can contact the first grounding terminal, or both fixing feet 2212 on the housing 221 of the first connector 22 can contact the first grounding terminal. There is no limitation here, and it depends on the actual situation.

[0095] In this embodiment, the outer casing 221 can be a metal casing 221, which is simple in material, easy to manufacture, and does not affect the manufacturing cost. Optionally, the material of the outer casing 221 can also be other conductive materials, which is not limited here and depends on the actual situation.

[0096] In this embodiment of the application, the display device may further include a signal connection line 4, the first end of which may be connected to the printed circuit board 3, and the second end of which may be connected to the first circuit board 21.

[0097] In the above-mentioned display device, the drive signal and power signal emitted from the printed circuit board 3 can be transmitted to the first circuit board 21 through the signal connection line 4, which can realize the control of the state of the first light strip 2.

[0098] Specifically, printed circuit board 3 can be a motherboard or a driver circuit board connected to the motherboard. There are no restrictions here, and it depends on the actual situation.

[0099] Specifically, the power signal and drive signal emitted by the printed circuit board 3 can be transmitted to the first circuit board 21 of the first light strip 2 via the signal connection line 4. Then, the LED light-emitting chip on the first circuit board 21 is driven to illuminate. For example, the printed circuit board 3 provides the first circuit board 21 with a power signal and a conduction signal for the LED light-emitting chip.

[0100] In this application, the display device may include multiple first light strips 2. For small-sized display devices, the multiple first light strips 2 can be arranged side by side in sequence, and each first light strip 2 is individually connected to the printed circuit board 3 via a signal connection line 4.

[0101] Specifically, such as Figure 2 As shown, the second end of the signal connection line 4 may have a signal connector 41, which can be inserted into the first connector 22 to enable the second end of the signal connection line 4 to be connected to the first circuit board 21.

[0102] In the above-mentioned display device, the first connector 22 of the first light strip 2 can be plugged into and cooperate with the signal connector 41 on the signal connection line 4, so that the first light strip 2 can be directly connected to the printed circuit board 3 through the signal connection line 4, and the signal transmission between the printed circuit board 3 and the first light strip 2 can be realized.

[0103] Specifically, signal connector 41 can be a male terminal connector.

[0104] In this embodiment of the application, for large-size display devices, two light strips need to be connected along the length of the display device to achieve the backlight requirement.

[0105] like Figure 9 As shown, multiple sets of light strips are provided on the base plate 11 of the back plate 1. The multiple sets of light strips are arranged side by side along the width direction of the base plate 11. Each set of light strips includes two connected light strips. The extension direction of the light strips is the length direction of the base plate 11.

[0106] The light strips can be fixed to the base plate 11 using double-sided tape 6, with the tape extending in the width direction of the base plate 11. One double-sided tape can fix multiple light strips simultaneously, resulting in a simple structure and easy assembly of the light strips.

[0107] In the embodiments of this application, for large-size display devices, such as Figure 10 and Figure 11As shown, the display device may also include a second light strip 5, which may include a second circuit board 51 and a second connector 52. The second connector 52 is connected to the end of the second circuit board 51 and is plugged into the first connector 22 to enable signal connection between the first circuit board and the second circuit board. The second end of the signal connection line 4 is connected to the second circuit board 51 to enable signal connection between the second end of the signal connection line 4 and the first circuit board 21.

[0108] In the above-mentioned display device, the second connector 52 on the second light strip 5 is plugged into the first connector 22 on the first light strip 2, the signal connection line 4 is connected to the second circuit board 51 of the second light strip 5, the printed circuit board 3 can transmit the driving signal to the first light strip 2 through the second light strip 5, and the grounding signal transmitted on the housing 221 of the first connector 22 can be transmitted to the second light strip 5 through the plugging and mating of the first connector 21 and the second connector 52, so as to realize the signal transmission between the two connected light strips.

[0109] Specifically, such as Figure 12 As shown, the second connector 52 can be a male terminal connector, and the first connector 22 is a female terminal connector. The second connector and the first connector can be mated together.

[0110] Specifically, the first end of the signal connection line 4 can be connected to the printed circuit board 3 through a connector, and the second end of the signal connector 41 can be connected to the second light strip 5, so that the printed circuit board 3 can transmit the driving signal to the second light strip 5 through the signal connection line 4.

[0111] In this embodiment, the printed circuit board 3 has a second grounding terminal on the side facing away from the base plate 11; such as Figure 10 and Figure 13 As shown, the display device may also include a grounding member 31, which may include a contact portion 311 and a grounding rod 312. The contact portion 311 is in contact with the second grounding terminal; the grounding rod 312 is connected to the contact portion 311 and passes through the printed circuit board 3 and is inserted into the base plate 11 so that the second grounding terminal is electrically connected to the back plate.

[0112] In the above-mentioned display device, the second grounding terminal on the printed circuit board 3 can be connected to the back plate 1 through the grounding member 31. The contact portion 311 of the grounding member 31 contacts the second grounding terminal. The grounding rod 312 of the grounding member 31 passes through the printed circuit board 3 and is inserted into the base plate 11, so that the grounding end of the driving unit on the lamp bar can contact the back plate 1 through the housing 221 of the first connector 22, and the grounding is completed by contacting the grounding member 31 on the printed circuit board 3 through the back plate 1.

[0113] Specifically, the grounding component 31 can be a screw, the contact part 311 can be the nut of the screw, and the grounding rod 312 can be the screw shaft. The screw shaft can pass through the printed circuit board 3 and be threadedly connected to the back plate 1, which can realize the fixing of the printed circuit board 3 and the conduction between the second grounding terminal on the printed circuit board 3 and the back plate 1.

[0114] In the embodiments of this application, such as Figure 2 and Figure 10 As shown, the base plate 11 also has through holes, through which the signal connection line 4 can pass to connect the printed circuit board 3 to the first light strip or the second light strip.

[0115] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A display device, characterized in that, include: A backplate, the backplate being conductive, the backplate comprising: Base plate; A first light strip, located on a first side of the base plate, comprising: A first circuit board, wherein the side of the first circuit board opposite to the base plate has a first grounding terminal; A driving unit is located on the side of the first circuit board away from the base plate, and the grounding terminal of the driving unit is electrically connected to the first grounding terminal. A first connector is connected to an end of the first circuit board, and the first connector includes: The housing is conductive and is in contact with the first grounding terminal. The housing has a grounding portion on the side facing the base plate, and the grounding portion is in contact with the base plate. A printed circuit board is located on the side of the base plate away from the first light strip. The printed circuit board has a second grounding terminal, which is electrically connected to the base plate.

2. The display device according to claim 1, characterized in that, The grounding portion is a protruding structure located on the side of the outer casing facing the base plate.

3. The display device according to claim 2, characterized in that, The grounding portion is cut from a portion of the outer casing.

4. The display device according to claim 2 or 3, characterized in that, The side of the base plate facing the outer casing includes: A recessed portion is provided opposite to the grounding portion, and the grounding portion is inserted into the recessed portion. The surface of the grounding portion is in contact with the inner wall of the recessed portion.

5. The display device according to claim 1, characterized in that, The outer side of the outer casing includes: The housing is fixedly connected to the first circuit board via the fixing foot, and the fixing foot is in contact with the first grounding terminal.

6. The display device according to claim 1, characterized in that, The outer casing is a metal casing.

7. The display device according to claim 1, characterized in that, Also includes: A signal connection line, wherein the first end of the signal connection line is connected to the signal of the printed circuit board, and the second end of the signal connection line is connected to the signal of the first circuit board.

8. The display device according to claim 7, characterized in that, The second end of the signal connection line has a signal connector, which is engaged with the first connector to enable the second end of the signal connection line to be connected to the signal of the first circuit board.

9. The display device according to claim 7, characterized in that, Also includes: A second light strip, located on a first side of the base plate, comprises: Second circuit board; The second connector is connected to the end of the second circuit board and is plugged into the first connector to enable signal connection between the first circuit board and the second circuit board; The second end of the signal connection line is connected to the signal of the second circuit board, so as to realize the signal connection between the second end of the signal connection line and the signal of the first circuit board.

10. The display device according to claim 1, characterized in that, The printed circuit board has a second grounding terminal on the side opposite to the base plate; The display device further includes: Grounding element, the grounding element comprising: The contact portion is in contact with the second grounding terminal; A grounding rod is connected to the contact portion, and the grounding rod passes through the printed circuit board and is inserted into the base plate so that the second grounding terminal is electrically connected to the back plate.

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