Backlight module and display device

Abstract

The utility model provides a backlight module and a display device. The backlight module comprises an outer frame, a display mainboard and an interactive sensing module. The outer frame is provided with an installation space, the display mainboard is arranged in the installation space, and part of the structure of the interactive sensing module is attached to the inner wall of the outer frame and is in signal connection with the display mainboard, so that the interactive sensing module does not occupy too much installation space as much as possible. The display main board is arranged in the mounting space, and a part of structure of the interactive sensing module is attached to the inner wall of the outer frame and is in signal connection with the display main board, so that mounting structures required for mounting the interactive sensing module are reduced, the space occupied by the mounting structures is saved, the space requirement of the frameless display device can be met, and the display effect of the frameless display device is improved. And an external interaction function of the backlight module can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the display technical field, and particularly relates to a backlight module and a display device. BACKGROUND

[0002] The bezel-free display device is widely welcomed in the display market due to its bezel-free display effect. However, in order to ensure the bezel-free effect, the edge width of the backlight module in the bezel-free display device needs to be reduced, so that the edge space of the backlight module is very limited, and more components cannot be additionally arranged, which leads to that the traditional bezel-free display device only has a display function but cannot realize external interaction. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides a backlight module and a display device to solve the problem that the bezel-free display device cannot realize external interaction.

[0004] The technical scheme adopted by the present application to solve the above technical problem is as follows:

[0005] An embodiment of the present application provides a backlight module, which comprises:

[0006] an outer frame provided with a mounting space;

[0007] a display mainboard arranged in the mounting space;

[0008] an interaction sensing module, part of the structure of the interaction sensing module is attached to the inner wall of the outer frame and is signal connected with the display mainboard.

[0009] In some embodiments of the present application, the interaction sensing module comprises a signal line, the inner wall of the outer frame is provided with a wire slot, and the signal line is arranged in the wire slot.

[0010] In some embodiments of the present application, a shielding buffer is arranged between the slot wall of the wire slot and the signal line.

[0011] In some embodiments of the present application, the shielding buffer is provided with a plurality of heat dissipation holes.

[0012] In some embodiments of the present application, the interaction sensing module further comprises an interaction sensor electrically connected with the signal line, and the interaction sensor is arranged on the top wall of the outer frame.

[0013] In some embodiments of the present application, the top wall is provided with a mounting slot, the mounting slot is communicated with the wire slot, and the interaction sensor is arranged in the mounting slot.

[0014] In some embodiments of the present application, along the light-out direction of the backlight module, the height of the interactive sensor away from the plane in which the bottom wall of the frame is located is less than or equal to the height of the plane in which the top wall is located.

[0015] In some embodiments of the present application, the interactive sensing module further comprises a signal connector electrically connected to the signal line, the signal connector being located in the mounting space, the display mainboard comprising a board body and a mainboard connector provided on the board body, the signal connector being plug-in matched with the mainboard connector.

[0016] In some embodiments of the present application, the mainboard connector is provided with a plug-in opening, and the signal connector is inserted into the plug-in opening to be magnetically fixed with the mainboard connector.

[0017] In the second aspect, the embodiments of the present application provide a display device, comprising a display panel and the backlight module as described in the first aspect, the display panel being provided on the light-out side of the backlight module.

[0018] In summary, due to the adoption of the above technical solutions, the present application at least includes the following beneficial effects:

[0019] The backlight module provided in the first aspect, by providing the display mainboard in the mounting space, and mounting part of the structure of the interactive sensing module on the inner wall of the frame and connecting the display mainboard with the signal, reduces the installation structure required for the installation of the interactive sensing module, saves the space required for the installation structure, meets the space requirement of the frameless display device, and realizes the external interaction function of the backlight module. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A structural schematic diagram of a display device provided by the embodiments of the present application;

[0021] Figure 2 A structural schematic diagram of a backlight module provided by the embodiments of the present application;

[0022] Figure 3 A structural schematic diagram of a backlight module provided by the embodiments of the present application; Figure 2 A structural schematic diagram of another enlarged structure in part A;

[0023] Figure 4 A structural schematic diagram of another backlight module provided by the embodiments of the present application;

[0024] Figure 5 A structural schematic diagram of another enlarged structure in part B; Figure 4

[0025] Explanation of reference signs:

[0026] ​1, backlight module; 11, frame; 111, mounting space; 112, wire slot; 113, mounting slot; 12, display mainboard; 121, board body; 122, mainboard connector; 13, interactive sensor module; 131, signal line; 132, interactive sensor; 133, signal connector; 14, shielding buffer; 141, heat dissipation hole; 15, backboard; 16, reflecting sheet; 17, light guide plate; 18, middle frame; 19, adhesive layer; 101, optical film layer; 2, display panel. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0028] In the description of the present application, it should be understood that the words "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0029] At the same time, specific words are used in the present application to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" means that a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that the "an embodiment" or "one embodiment" or "one alternative embodiment" mentioned in different places in the specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be properly combined.

[0030] Please refer to Figure 1 The embodiments of the present application provide a display device, which comprises a display panel 2 and a backlight module 1, and the display panel 2 is arranged on the light emitting side of the backlight module 1. The backlight module 1 provides a backlight source for the display panel 2 to display a picture, and the display panel 2 receives and processes the backlight source to display the picture. It should be noted that the invention point of the present application is not the display panel 2, and the display panel 2 belongs to the conventional technology in the art, so the specific structure of the display panel 2 will not be described in detail here.

[0031] In some embodiments, please refer to Figure 2The backlight module 1 comprises an outer frame 11, a display mainboard 12 and an interactive sensing module 13. The outer frame 11 is provided with a mounting space 111, the display mainboard 12 is arranged in the mounting space 111, and part of the structure of the interactive sensing module 13 is attached to the inner wall of the outer frame 11 and is signal connected with the display mainboard 12, so that the interactive sensing module 13 does not occupy too much mounting space 111 as far as possible. The display mainboard 12 is used for controlling the display panel 2 to display corresponding pictures according to the interactive signal received by the interactive sensing module 13, so as to realize the external interaction function of the display device, such as the external gesture recognition interaction function.

[0032] The technical scheme provided in the present application arranges the display mainboard 12 in the mounting space 111, and arranges part of the structure of the interactive sensing module 13 on the inner wall of the outer frame 11 and signal connects the display mainboard 12, so as to reduce the mounting structure required for the installation of the interactive sensing module 13, save the space required for the installation of the mounting structure, meet the space requirement of the frameless display device, and realize the external interaction function of the backlight module 1.

[0033] It should be noted that, along the light-out direction of the backlight module 1, the height of the plane where the top wall of the outer frame 11 is located is greater than the height of the plane where the display surface of the display panel 2 is located, so that the outer frame 11 can surround the display panel 2 and play a role in protecting the display panel 2. In addition, along the light-out direction of the backlight module 1, the height of the plane where the detection end of the interactive sensing module 13 is located is greater than or equal to the height of the plane where the display surface of the display panel 2 is located, so that the detection signal emitted by the detection end of the interactive sensing module 13 can cover the display surface of the display panel 2, and the accuracy and stability of the external interaction function are improved.

[0034] In some embodiments, referring to Figure 3 The interactive sensing module 13 comprises a signal line 131, the inner wall of the outer frame 11 is provided with a wire groove 112, and the signal line 131 is arranged in the wire groove 112, so as to reduce the area occupied by the signal line 131 outside the outer frame 11, that is, the signal line 131 and the outer frame 11 can share a part of space, which is beneficial to realize the frameless effect of the display device. There are many ways to arrange the signal line 131 in the wire groove 112, which can be embedded in the wire groove 112, or can be injection molded with the outer frame 11, so that the wire groove 112 is naturally formed in the place where the signal line 131 is located, and the signal line 131 is integrally formed with the outer frame 11, or the signal line 131 can be pasted in the wire groove 112, or the signal line 131 can be detachably clamped in the wire groove 112. In this embodiment, the signal line 131 is integrally injection molded with the outer frame 11, which improves the connection stability of the signal line 131 and the outer frame 11 and maximally reduces the space volume occupied by the signal line 131.

[0035] It should be noted that the inner wall of the outer frame 11 includes an inner side wall and an inner bottom wall, and the wire slot 112 in this embodiment is arranged on the inner side wall and extends to the inner bottom wall, facilitating subsequent connection with the display mainboard 12.

[0036] Further, referring to Figure 5 , the slot wall of the wire slot 112 is provided with a shielding buffer 14 between the signal line 131, and the shielding buffer 14 has the characteristics of elastic deformation and electromagnetic interference shielding. When the signal line 131 expands due to heat, the shielding buffer 14 can change to adapt to the shape change of the signal line 131, thereby playing a buffering role and avoiding damage to the signal line 131, especially the signal line 131 using the fixing method of integrally molding the signal line 131 with the outer frame 11. For the integrally molding method, before molding, at least part of the signal line 131 is surrounded by the shielding buffer 14, and then molding is performed. When the molding is completed, the shielding buffer 14, the signal line 131, and the outer frame 11 are integrally formed.

[0037] Further, the shielding buffer 14 is provided with a plurality of heat dissipation holes 141 for improving the heat dissipation effect of the signal line 131 and reducing the expansion degree of the signal line 131 due to heat. The heat dissipation holes 141 can be provided on the shielding buffer 14 before molding, or can be separately provided on the shielding buffer 14 after molding, without limitation. It should be noted that although the shielding buffer is provided with heat dissipation holes, the heat dissipation effect can be improved, but the electromagnetic interference shielding effect will be reduced. Therefore, whether to provide the heat dissipation holes can be selected by the person skilled in the art according to the actual needs.

[0038] In some embodiments, referring to Figure 2 or Figure 4 , the interactive sensing module 13 further includes an interactive sensor 132 electrically connected to the signal line 131, and the interactive sensor 132 is arranged on the top wall of the outer frame 11. The interactive sensor 132 is used for detecting the interactive signal of the display surface of the display panel 2, so as to realize external interaction of the display device. Exemplarily, the interactive sensor 132 can be an infrared sensor, which scans the display panel 2 by using infrared rays. When a finger touches the display surface of the display panel 2, the display panel 2 is detected to be touched at this time, and the specific position of the display panel 2 touched is located according to the coordinate positioning method, thereby realizing external interaction. Of course, the coordinate positioning method can also be used in other ways. In addition, the interactive sensor 132 can also use other sensors, and is not limited to touch interaction, but can also be other non-contact external interaction.

[0039] Further, the top wall is provided with a mounting groove 113, which is communicated with the wire groove 112, so as to facilitate the signal line 131 to be connected with the interactive sensor 132 directly through the wire groove 112 and the mounting groove 113. The interactive sensor 132 is arranged in the mounting groove 113, so as to reduce the space occupied by the volume of the interactive sensor 132 outside the frame 11, and to facilitate the realization of the frameless display device. Exemplarily, the interactive sensor 132 is integrally formed with the frame 11 by injection molding, so as to improve the fixing stability of the interactive sensor 132 and the frame 11, and to reduce the common volume of the frame 11 and the interactive sensor 132. In addition to the injection molding, the interactive sensor 132 can also be fixed in the mounting groove 113 by means of sticking, screwing, buckling and the like, which is not limited.

[0040] It should be noted that the setting position of the interactive sensor 132 can be located at the top side of the display device, or at the left side or the right side of the display device.

[0041] In some embodiments, along the light emitting direction of the backlight module 1, the height of the side of the interactive sensor 132 away from the plane of the bottom wall of the frame 11 is less than or equal to the height of the plane of the top wall, so as to prevent the interactive sensor 132 from protruding too much in the light emitting direction of the backlight module 1, and to affect the display effect of the display device as a whole, and to protect the interactive sensor 132 to a certain extent.

[0042] In some embodiments, please refer to Figure 2 or Figure 4 The interactive sensing module 13 further comprises a signal connector 133 electrically connected with the signal line 131, and the signal connector 133 is located in the mounting space 111. The display mainboard 12 comprises a board body 121 and a mainboard connector 122 arranged on the board body 121, and the signal connector 133 is plugged and matched with the mainboard connector 122. The signal connector 133 is arranged on the inner bottom wall of the frame 11, so as to effectively avoid the signal connector 133 from affecting the frameless effect of the display device. The signal connector 133 is plugged and matched with the mainboard connector 122, so that after the interactive sensor 132 detects the interactive signal, the interactive signal can be transmitted to the signal connector 133 through the signal line 131, and then transmitted to the board body 121 through the mainboard connector 122. The board body 121 processes the interactive signal and controls the display panel 2 to display the corresponding picture according to the processing result, so as to realize the external interactive function.

[0043] Further, the mainboard connector 122 is provided with a plug-in interface, and the signal connector 133 is inserted into the plug-in interface to be magnetically fixed with the mainboard connector 122. For example, a magnetic layer is arranged on the inner wall of the plug-in interface, and the part of the mainboard connector 122 for plugging is made of metal material or provided with a magnetic layer opposite to the magnetic layer of the plug-in interface. When the signal connector 133 is inserted into the plug-in interface, the signal connector 133 and the mainboard connector 122 are magnetically fixed.

[0044] It should be noted that, in addition to the magnetic attraction mode, the plug-in cooperation between the mainboard connector 122 and the signal connector 133 can also adopt a buckle fixing mode, a flexible part limiting fixing mode, etc., which is not limited here.

[0045] In some embodiments, referring to Figure 1 and Figure 2 , the backlight module 1 further comprises a back plate 15, a reflective sheet 16, a light guide plate 17, an optical film layer 101, a light source, a middle frame 18 and an adhesive layer 19 arranged in the mounting space 111. The reflective sheet 16, the light guide plate 17 and the optical film layer 101 are sequentially stacked on the back plate 15, and the middle frame 18 is arranged outside the back plate 15 and extends to the top of the back plate 15 to cover the edges of the optical film layer 101. The edges of the display panel 2 are fixed to the middle frame 18 through the adhesive layer 19. The light source is arranged on the inner side wall of the back plate 15, and the emission direction of the light source is arranged towards the light guide plate 17. The display mainboard 12 is located between the back plate 15 and the outer frame 11.

[0046] In summary, the technical scheme provided by the present application arranges the display mainboard 12 in the mounting space 111, and arranges part of the structure of the interactive sensing module 13 on the inner wall of the outer frame 11 and in signal connection with the display mainboard 12, thereby reducing the installation structure required for the installation of the interactive sensing module 13, saving the space required by the installation structure, meeting the space requirement of the frameless display device, and realizing the external interaction function of the backlight module 1.

[0047] It should be noted that, in order to simplify the description of the embodiments of the present application and thus help to understand one or more embodiments, sometimes the description of the embodiments in the foregoing description will merge multiple features into one embodiment, figure or description thereof. However, this method of expression does not mean that the features required by the present application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

Claims

1. A backlight module, characterized in that, include: The outer frame has installation space. The display motherboard is located within the installation space; An interactive sensing module, a portion of which is attached to the inner wall of the outer frame and connected to the display motherboard via signals.

2. The backlight module as described in claim 1, characterized in that, The interactive sensing module includes a signal line, and a groove is formed on the inner wall of the outer frame, with the signal line disposed in the groove.

3. The backlight module as described in claim 2, characterized in that, A shielding buffer is provided between the groove wall and the signal line.

4. The backlight module as described in claim 3, characterized in that, The shielding buffer has multiple heat dissipation holes.

5. The backlight module as described in claim 4, characterized in that, The interactive sensing module also includes an interactive sensor electrically connected to the signal line, and the interactive sensor is located on the top wall of the outer frame.

6. The backlight module as described in claim 5, characterized in that, The top wall has a mounting groove, which is connected to the wire groove, and the interactive sensor is located in the mounting groove.

7. The backlight module as described in claim 6, characterized in that, Along the light emission direction of the backlight module, the height of the plane on the side of the interactive sensor away from the bottom wall of the outer frame is less than or equal to the height of the plane on the top wall.

8. The backlight module as described in any one of claims 2-7, characterized in that, The interactive sensing module also includes a signal connector electrically connected to the signal line. The signal connector is located within the installation space. The display motherboard includes a board body and a motherboard connector disposed on the board body. The signal connector is plugged into the motherboard connector.

9. The backlight module as described in claim 8, characterized in that, The motherboard connector has a plug-in interface, and the signal connector is inserted into the plug-in interface to magnetically fix it to the motherboard connector.

10. A display device, characterized in that, It includes a display panel and a backlight module as described in any one of claims 1 to 9, wherein the display panel is disposed on the light-emitting side of the backlight module.

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