Backlight module and display device

Abstract

The utility model discloses a backlight module and a display device, the backlight module comprises a light guide plate, a connecting body, a plurality of backlight sources and a driving part, and one side of the light guide plate is a light incident surface; the connecting body is arranged on one side of the light incident surface; the plurality of backlight sources are arranged at intervals along the circumferential direction of the connecting body; the driving piece is connected to the connecting body; the driving part is used for driving the connecting body to rotate in the circumferential direction of the connecting body so that one of the backlight sources can be arranged towards the light inlet face. The problem that the use requirement of a user cannot be met when a single light source in the backlight module is damaged can be solved.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a backlight module and a display device. Background Technology

[0002] In related technologies, the same backlight module can only provide a single light source. When the single light source is damaged, the entire backlight module needs to be replaced, which causes inconvenience to users.

[0003] Therefore, it is necessary to propose a new technical solution to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this application is to provide a backlight module and a display device that can solve the problem that the user's needs cannot be met when a single light source in the backlight module is damaged.

[0005] To solve the above problems, the technical solution of this application is as follows:

[0006] In a first aspect, this application proposes a backlight module, comprising:

[0007] A light guide plate, wherein one side of the light guide plate is the light incident surface;

[0008] A connector is disposed on one side of the light-incident surface;

[0009] Multiple backlights are spaced apart along the circumferential direction of the connector;

[0010] The driving component is connected to the connecting body;

[0011] The driving member is used to drive the connector to rotate along the circumferential direction of the connector so that one of the multiple backlights is positioned facing the light incident surface.

[0012] In one embodiment of this application, the light guide plate extends along a first direction on one side where the light incident surface is formed, the connector extends along the first direction, and at least a portion of the driving member is connected to one end of the connector along the first direction.

[0013] The backlight extends along the first direction and is disposed on the outer peripheral surface of the connector, with the light-emitting side of the backlight located on the side of the backlight away from the connector.

[0014] In one embodiment of this application, the backlight includes:

[0015] Light-emitting devices; and

[0016] The circuit board, wherein the light-emitting device is disposed on the side of the circuit board away from the connector, the circuit board includes an extension and a connecting portion, the extension is disposed on the outer peripheral surface of the connector and extends along the first direction, the connecting portion is connected to one end of the extension, and the connecting portion extends beyond one end of the connector in the first direction;

[0017] The connecting portions of the multiple backlights form an accommodating cavity;

[0018] The backlight module further includes a connector disposed within the accommodating cavity, the connector facing the light-incident surface, and the connector being configured to electrically connect a connection portion located between the connector and the light-incident surface.

[0019] In one embodiment of this application, the connecting portion is provided with a connecting pin on the side near the receiving cavity;

[0020] The connector includes:

[0021] A connecting seat is disposed within the accommodating cavity; and

[0022] A connection terminal, at least a portion of which is disposed on the side of the connector near the light-incident surface, the connection terminal being configured to electrically connect the connection pin located between the connection terminal and the light-incident surface.

[0023] In one embodiment of this application, a rotating channel is formed in the connector, the rotating channel passes through the connector along the first direction, a portion of the drive member passes through the rotating channel and is connected to one end of the connector.

[0024] In one embodiment of this application, the connector further includes a lead-out terminal, a portion of which is exposed outside the backlight module, and another portion of which is electrically connected to the connection terminal.

[0025] In one embodiment of this application, the backlight module further includes a frame structure, in which a mounting cavity is formed, and the light guide plate, the connector and the backlight are disposed in the mounting cavity;

[0026] The first part of the driving component is located inside the mounting cavity and connected to one end of the connector, while the second part of the driving component passes through the frame structure and extends out of the frame structure.

[0027] In one embodiment of this application, the mounting cavity includes a first cavity and a second cavity that are connected to each other, the light guide plate is disposed in the first cavity, and the connector and the plurality of backlights are disposed in the second cavity;

[0028] The connector and the plurality of backlights rotate along the circumferential direction of the connector, having a rotational outer diameter;

[0029] The minimum distance between any two opposing inner walls within the second cavity is greater than the outer diameter of rotation.

[0030] In one embodiment of this application, among the plurality of backlight sources, the parameters of the light emitted by any two of the backlight sources are different;

[0031] The parameters of the light include at least one of color and brightness.

[0032] In one embodiment of this application, the connector is detachably connected to the backlight; or,

[0033] The connector is glued to the backlight.

[0034] Secondly, this application proposes a display device including a backlight module, the backlight module including a light guide plate, a connector, a plurality of backlight sources and a driving member, one side of the light guide plate being a light incident surface; the connector being disposed on one side of the light incident surface; the plurality of backlight sources being spaced apart along the circumferential direction of the connector; the driving member being connected to the connector; wherein, the driving member is used to drive the connector to rotate along the circumferential direction of the connector, so that one of the plurality of backlight sources is disposed facing the light incident surface.

[0035] In this application, by arranging multiple backlights at intervals along the circumferential direction of the connector and placing the connector on one side of the light-incident surface of the light guide plate, when a backlight located on the light-incident surface is damaged, the connector can be rotated along the circumferential direction of the connector by a driving component, so that another undamaged backlight is set facing the light-incident surface. This eliminates the need to replace the entire backlight module, solves the problem that the user's needs cannot be met when a single light source in the backlight module is damaged, and improves the user experience. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of an embodiment of the backlight module of this application;

[0037] Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the backlight module at section line A-A'.

[0038] Figure 3 yes Figure 1 Enlarged view of point B in the middle;

[0039] Figure 4 yes Figure 1 Enlarged view of point C in the middle;

[0040] Figure 5This is a schematic diagram of one embodiment of the light guide plate, connector, backlight, connector and driving component of this application;

[0041] Figure 6 yes Figure 5 Exploded view;

[0042] Figure 7 yes Figure 3 The backlight module shown is a cross-sectional view at the D-D' section line;

[0043] Figure 8 This is a schematic diagram of one embodiment of the backlight and connector of this application. Detailed Implementation

[0044] The terms used in this specification and claims have the meanings that are commonly understood by one of ordinary skill in the art to which this application pertains. The terms used in this specification and claims are for the purpose of facilitating the description and understanding of this application only, and are not intended to limit this application to the narrow interpretation of the specific terms used in the specification and claims.

[0045] Please see Figure 1 This application discloses a display device, which can be a tablet computer, e-reader, electronic display screen, laptop computer, mobile phone, augmented reality (AR) / virtual reality (VR) device, media player, wearable device, digital camera, car navigation system, etc. The display device includes a backlight module 100 and a display panel.

[0046] Optionally, the display panel is a liquid crystal display (LCD).

[0047] Please see Figure 2 This application proposes a backlight module 100, including a light guide plate 10, a connector 20, a plurality of backlight sources 30, and a driver 40.

[0048] The light guide plate 10 has a light incident surface 11 on one side. The connector 20 is located on one side of the light incident surface 11. Multiple backlights 30 are spaced apart along the circumferential direction of the connector 20. The drive unit 40 is connected to the connector 20.

[0049] The driving component 40 is used to drive the connector 20 to rotate along the circumferential direction of the connector 20 so that one of the multiple backlights 30 is positioned facing the light-incident surface 11.

[0050] In this embodiment, by arranging multiple backlights 30 at intervals along the circumferential direction of the connector 20 and placing the connector 20 on one side of the light-incident surface 11 of the light guide plate 10, when a backlight 30 located on one side of the light-incident surface 11 is damaged, the connector 20 can be driven to rotate along the circumferential direction of the connector 20 by the drive component 40, so that another undamaged backlight 30 is set facing the light-incident surface 11. This eliminates the need to replace the entire backlight module 100, solves the problem that the user's needs cannot be met when a single light source in the backlight module 100 is damaged, and improves the user experience.

[0051] Optionally, the connector 20 can be detachably connected to the backlight 30.

[0052] In this embodiment, the connector 20 and the backlight 30 can be locked and detachably connected by screws, bolts, nuts, etc. The connector 20 and the backlight 30 can also be detachably connected by mortise and tenon structure or by buckle structure. No limitation is made on the method of detachable connection.

[0053] Optionally, the connector 20 is glued to the backlight 30.

[0054] In this embodiment, the connector 20 and the backlight 30 can be connected by tape, double-sided tape, or glue. No specific glue connection method is limited here.

[0055] Optionally, among the multiple backlight sources 30, any two backlight sources 30 may emit light with different parameters. The light parameters include at least one of color and brightness.

[0056] In this embodiment, the colors of the light emitted by any two backlight sources 30 can be different. For example, among multiple backlight sources 30, one backlight source 30 emits white light, while the light emitted by another backlight source 30 can be non-white light from the visible spectrum, or it can be non-visible light, such as infrared or ultraviolet light. This embodiment allows for flexible switching between different light source colors, increasing the range of light source colors available to the user.

[0057] It's important to understand that the fact that any two backlight sources 30 emit light of different colors can be interpreted as the fact that any two backlight sources 30 emit light of different wavelengths. This is because different wavelengths of light have different colors within the visible light range.

[0058] In this embodiment, the brightness of the light emitted by any two backlight sources 30 can also be different. For example, among multiple backlight sources 30, one backlight source 30 emits light with a first brightness, while the other backlight source 30 emits light with a second brightness, where the second brightness is greater than the first brightness. This embodiment allows for flexible switching between different brightness levels. A high-brightness backlight source 30 can improve the display effect, while a low-brightness backlight source 30 can protect the eyes and increase the brightness range selectable by the user.

[0059] Please see Figure 1 Optionally, the light guide plate 10 extends along a first direction D1 on one side where the light incident surface 11 is formed. The connector 20 extends along the first direction D1. At least a portion of the drive member 40 is connected to one end of the connector 20 along the first direction D1. The backlight 30 extends along the first direction D1 and is disposed on the outer peripheral surface of the connector 20. The light-emitting side of the backlight 30 is located on the side of the backlight 30 away from the connector 20.

[0060] In this embodiment, the backlight 30 can be a light strip, which extends along the first direction D1.

[0061] Optionally, the driving component 40 can be a motor. In this embodiment, when the motor is running, the output end of the motor is driven to connect with the end of the connector 20. When the output end of the motor rotates, it can drive the connector 20 to rotate along the circumferential direction of the connector 20, thereby switching the backlight 30 provided on the light incident surface 11 of the light guide plate 10.

[0062] Please see Figure 3 Optionally, the driving element 40 can also be a knob. In this embodiment, when it is necessary to rotate the connecting body 20, the knob can be rotated, and the knob drives the connecting body 20 to rotate in its circumferential direction, thereby switching the backlight 30 of the light incident surface 11 of the corresponding light guide plate 10. To avoid redundancy, the following embodiments will be described using a knob as an example for the driving element 40.

[0063] Optionally, the backlight module 100 also includes a frame structure 60. A mounting cavity Z2 is formed within the frame structure 60. The light guide plate 10, the connector 20, and the backlight 30 are disposed within the mounting cavity Z2.

[0064] The first part of the driving component 40 is located inside the mounting cavity Z2 and connected to one end of the connecting body 20. The second part of the driving component 40 passes through the frame structure 60 and extends out of the frame structure 60.

[0065] Please see Figure 3In this embodiment, since the second part of the driving member 40 passes through the frame structure 60 and extends out of the frame, when it is necessary to replace the corresponding backlight 30, the connecting body 20 inside the frame structure 60 can be rotated in its circumferential direction by rotating the second part of the driving member 40 outside the frame structure 60, so that the corresponding backlight 30 is positioned facing the light incident surface 11. This solves the problem that the user's needs cannot be met when a single light source in the backlight module 100 is damaged, and improves the user experience.

[0066] Optionally, the frame structure 60 includes a back plate 61 and a middle frame 62, which together form a mounting cavity Z2.

[0067] Optional, please refer to Figure 2 The mounting cavity Z2 includes a first cavity Z21 and a second cavity Z22 that are connected. The light guide plate 10 is disposed in the first cavity Z21. The connector 20 and a plurality of backlights 30 are disposed in the second cavity Z22.

[0068] The connector 20 and multiple backlights 30 rotate circumferentially along the connector 20, having a rotational outer diameter L1. The minimum distance L2 between any two opposing inner walls within the second cavity Z22 is greater than the rotational outer diameter L1.

[0069] In this embodiment, since the connector 20 needs to drive multiple backlights 30 to rotate within the second cavity Z22, it is necessary to ensure that the minimum distance L2 between any two opposing inner walls within the second cavity Z22 is greater than the outer diameter of rotation L1, so as to reserve sufficient cavity space for the rotation of the connector 20 and ensure the realization of the rotating backlights 30.

[0070] Optional, please refer to Figure 4 The backlight module 100 also includes a limiting structure 70. A first portion of the limiting structure 70 is located within the mounting cavity Z2 and connected to the end of the connector 20 away from the drive member 40. Another portion of the limiting structure 70 passes through the frame structure 60. The limiting structure 70 is used to limit the movement of the connector 20 relative to the light-incident surface 11.

[0071] It should be noted that the limiting structure 70 restricts the movement of the connecting body 20 relative to the light-incident surface 11. This movement can be understood as displacement in the horizontal or thickness direction, but the limiting mechanism does not restrict the rotation of the connecting body 20 itself. The limiting mechanism can ensure the relative distance between the backlight 30 and the light-incident surface 11, preventing changes in the distance between the backlight 30 and the light-incident surface 11, and improving the stability of the internal structure of the backlight module 100.

[0072] Please see Figure 5 Optionally, the backlight 30 includes a light-emitting device 31 and a circuit board 32. The light-emitting device 31 is located on the side of the circuit board 32 away from the connector 20.

[0073] Please see Figure 6 Optionally, the circuit board 32 includes an extension 321 and a connecting portion 322. The extension 321 is disposed on the outer peripheral surface of the connector 20 and extends along a first direction D1. The connecting portion 322 is connected to one end of the extension 321. The connecting portion 322 extends beyond one end of the connector 20 in the first direction D1. The connecting portions 322 of the plurality of backlights 30 form a receiving cavity Z1.

[0074] The backlight module 100 also includes a connector 50. The connector 50 is disposed within the receiving cavity Z1. The connector 50 is positioned toward the light-incident surface 11. The connector 50 is configured to electrically connect to a connection portion 322 located between the connector 50 and the light-incident surface 11.

[0075] In this embodiment, the connector 50 is electrically connected to only one of the multiple backlights 30 located between the connector 50 and the light-incident surface 11, thereby avoiding the connector 50 from supplying power to the other backlights 30, reducing the power of the backlight module 100, and achieving the effect of energy saving and environmental protection.

[0076] Please see Figure 6 Optionally, a rotating channel 53 is formed within the connector 51. The rotating channel 53 extends through the connector 51 along a first direction D1. A portion of the drive member 40 passes through the rotating channel 53 and is connected to one end of the connector 20.

[0077] In this embodiment, the rotating channel 53 allows the driving component 40 to rotate relative to the connector 50 without the main body of the connector 51 moving or rotating. The rotation of the driving component 40 causes the connector 20 to rotate, thereby rotating the corresponding backlight 30 between the connector 50 and the light-incident surface 11, thus electrically connecting the connector 50 to the backlight 30 located between it and the light-incident surface 11. This embodiment avoids the connector 50 being electrically connected to multiple backlights 30 simultaneously, reducing energy consumption without affecting the backlight module 100's light emission.

[0078] Please see Figure 7 Optionally, the connecting part 322 is provided with a connecting pin 323 on the side near the accommodating cavity Z1.

[0079] The connector 50 includes a connector base 51 and a connector terminal 52. The connector base 51 is disposed within a receiving cavity Z1. At least a portion of the connector terminal 52 is disposed on the side of the connector base 51 near the light-receiving surface 11. The connector terminal 52 is configured to electrically connect to a connector pin 323 located between the connector terminal 52 and the light-receiving surface 11.

[0080] In this embodiment, when the connection pin 323 of the connection part 322 is connected to the connection terminal 52 of the connection base 51, the connection part 322 and the connection base 51 are electrically connected. This embodiment, by providing the connection terminal 52 on the side of the connection base 51 facing the light-incident surface 11, ensures that the connection base 51 is only connected to the connection pin 323 located between the connection terminal 52 and the light-incident surface 11, thus avoiding simultaneous electrical connection of the connector 50 to multiple backlights 30 and reducing energy consumption without affecting the backlight module 100's light emission.

[0081] Please see Figure 7 Optionally, connector 50 also includes lead-out terminals 54. A portion of lead-out terminals 54 is exposed outside the backlight module 100, and another portion of lead-out terminals 54 is electrically connected to connection terminals 52.

[0082] In this embodiment, in order to enable the connector 50 to be connected to an external power source, a lead-out terminal 54 is also provided in the connector 50. The lead-out terminal 54 can be connected to the connection terminal 52 through a wire (not shown in the figure), thereby realizing the electrical connection between the lead-out terminal 54 and the connection terminal 52.

[0083] Please see Figure 8 Optionally, the backlight module 100 includes at least three backlight sources 30.

[0084] In this embodiment, the backlight 30 in the backlight module 100 can be three or more. This application does not limit the number of backlights 30, but depends on the actual usage requirements.

[0085] The specific embodiments of this application have been described in detail above. The embodiments disclosed above are merely preferred embodiments of this application. Those skilled in the art can make many modifications and improvements without departing from the concept of this application. All such modifications and improvements fall within the scope of protection defined by the claims of this application.

Claims

1. A backlight module, characterized in that, include: A light guide plate, wherein one side of the light guide plate is the light incident surface; A connector is disposed on one side of the light-incident surface; Multiple backlights are spaced apart along the circumferential direction of the connector; The driving component is connected to the connecting body; The driving member is used to drive the connector to rotate along the circumferential direction of the connector so that one of the multiple backlights is positioned facing the light incident surface.

2. The backlight module as described in claim 1, characterized in that, The light guide plate extends along a first direction on one side where the light incident surface is formed, the connector extends along the first direction, and at least a portion of the driving member is connected to one end of the connector along the first direction. The backlight extends along the first direction and is disposed on the outer peripheral surface of the connector, with the light-emitting side of the backlight located on the side of the backlight away from the connector.

3. The backlight module as described in claim 2, characterized in that, The backlight includes: Light-emitting devices; and The circuit board, wherein the light-emitting device is disposed on the side of the circuit board away from the connector, the circuit board includes an extension and a connecting portion, the extension is disposed on the outer peripheral surface of the connector and extends along the first direction, the connecting portion is connected to one end of the extension, and the connecting portion extends beyond one end of the connector in the first direction; The connecting portions of the multiple backlights form an accommodating cavity; The backlight module further includes a connector disposed within the accommodating cavity, the connector facing the light-incident surface, and the connector being configured to electrically connect a connection portion located between the connector and the light-incident surface.

4. The backlight module as described in claim 3, characterized in that, The connecting part is provided with a connecting pin on the side near the receiving cavity; The connector includes: A connecting seat is disposed within the accommodating cavity; and A connection terminal, at least a portion of which is disposed on the side of the connector near the light-incident surface, the connection terminal being configured to electrically connect the connection pin located between the connection terminal and the light-incident surface.

5. The backlight module as described in claim 4, characterized in that, A rotating channel is formed within the connector, the rotating channel extending through the connector along the first direction, a portion of the drive member passing through the rotating channel and connected to one end of the connector.

6. The backlight module as described in claim 4, characterized in that, The connector also includes lead-out terminals, a portion of which is exposed outside the backlight module, and another portion of which is electrically connected to the connection terminals.

7. The backlight module as described in any one of claims 1-6, characterized in that, The backlight module also includes a frame structure, in which a mounting cavity is formed, and the light guide plate, the connector and the backlight are disposed in the mounting cavity; The first part of the driving component is disposed in the mounting cavity and connected to one end of the connector, and the second part of the driving component passes through the frame structure and extends out of the frame structure.

8. The backlight module as described in claim 7, characterized in that, The mounting cavity includes a first cavity and a second cavity that are connected to each other. The light guide plate is disposed in the first cavity, and the connector and the multiple backlights are disposed in the second cavity. The connector and the plurality of backlights rotate along the circumferential direction of the connector, having a rotational outer diameter; The minimum distance between any two opposing inner walls within the second cavity is greater than the outer diameter of rotation.

9. The backlight module as described in any one of claims 1-6, characterized in that, Among the multiple backlight sources, the parameters of the light emitted by any two of the backlight sources are different; The parameters of the light include at least one of color and brightness.

10. The backlight module as described in any one of claims 1-6, characterized in that, The connector is detachably connected to the backlight; or... The connector is glued to the backlight.

11. A display device, characterized in that, Includes the backlight module as described in any one of claims 1-10.

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