Display module and display device
By integrating the light source with the main control board, the problems of low integration and insufficient strength caused by separate device design are solved, achieving higher integration and strength, reducing costs and simplifying the production process.
Patent Information
- Application Number
- CN202410517823.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-10-28
AI Technical Summary
In existing technologies, the separate design of LED light sources and main control boards leads to problems such as low device integration, insufficient module strength, and high production complexity.
The light source is integrated with the main control board and connected by a flexible circuit board, eliminating the need for flexible circuit boards and connectors. The light source is placed on the main control board, and the bottom of the back panel has an opening for the light source to pass through.
It improves device integration, reduces costs, enhances module strength, simplifies the production process, and avoids reliability issues associated with flexible circuit board connections.
Smart Images
Figure CN120848064A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of display product manufacturing technology, and in particular to a display module and a display device. Background Technology
[0002] In a typical backlight module, the LED light source and driver are designed separately. The LED is designed and mounted on an FPC flexible board, while the driver is designed and mounted on an FR4 rigid board, and connected via a connector on the rigid board through the FPC. This design has the following problems: 1. Low component integration, requiring separate manufacturing, which is not conducive to cost reduction and production schedule improvement. 2. This solution requires at least one connector to connect the lamp and driver to the FPC substrate. 3. This solution requires a hole in the side of the backplane to allow the FPC connector to be brought out, reducing the strength of the module. Summary of the Invention
[0003] To address the aforementioned technical problems, this invention provides a display module and a display device, resolving issues such as low reliability and low module strength caused by the separate installation of the light source and the main control board.
[0004] To achieve the above objectives, the technical solution adopted in the embodiments of the present invention is as follows:
[0005] A display module includes a display panel and a backlight assembly. The backlight assembly includes a light source, a backplate, and a main control board. The main control board is located on the side of the backplate away from the display panel, and the main control board is connected to the display panel via a flexible circuit board to transmit signals to the display panel.
[0006] The main control board includes a first side disposed away from the back panel and a second side disposed close to the back panel. The first side is provided with a driver chip for controlling the display panel, and the second side is provided with a light source for providing light to the display panel.
[0007] Optionally, the light source is located at one end of the main control board.
[0008] Optionally, the light source includes a plurality of LEDs, which are spaced apart on the main control board along a first direction parallel to the extension direction of one side of the main control board.
[0009] Optionally, the back panel includes a bottom plate and a side plate. The main control board is disposed on the side of the bottom plate away from the display panel, and the bottom plate has a hollow structure to allow the light source to pass through.
[0010] Optionally, the light source includes a plurality of LEDs, which are spaced apart on the main control board along a first direction, the first direction being parallel to the extension direction of one side of the main control board;
[0011] The hollow structure includes a plurality of hollow holes spaced apart along the first direction, and the plurality of hollow holes are arranged in a one-to-one correspondence with the plurality of LEDs.
[0012] Optionally, the light source includes a plurality of LEDs, which are spaced apart on the main control board along a first direction, the first direction being parallel to the extension direction of one side of the main control board;
[0013] The hollow structure includes a strip-shaped through hole extending along the first direction.
[0014] Optionally, it also includes a light guide plate, with the base plate located on the backlight side of the light guide plate and the light source passing through the hollow structure and located on the side of the light guide plate.
[0015] Optionally, an adhesive layer is provided between the base plate and the main control board.
[0016] Optionally, a reflective sheet is provided between the light guide plate and the back plate.
[0017] This invention also provides a display device, including the display module described above.
[0018] The beneficial effects of the present invention are as follows: The embodiments of this application provide a main control board, on which the light source that provides the light source for the display module is integrated and set on the main control board. Compared with the related technical solutions of setting the light source separately and connecting it to the main control board through a flexible circuit board, the integration of the device is improved, the cost is reduced, and the strength of the module is improved. Attached Figure Description
[0019] Figure 1 A schematic diagram illustrating a display module in related technologies;
[0020] Figure 2 A schematic diagram showing the main control board in the relevant technology;
[0021] Figure 3 A schematic diagram showing the display module in an embodiment of the present invention;
[0022] Figure 4 This is a partial structural diagram of the main control board in an embodiment of the present invention;
[0023] Figure 5 This is a partial structural diagram of the main control board in an embodiment of the present invention;
[0024] Figure 6 A schematic diagram showing the bottom plate of the back plate in an embodiment of the present invention;
[0025] Figure 7This is a schematic diagram showing the bottom plate of the back plate in an embodiment of the present invention.
[0026] 1 Light guide plate; 2 Back plate; 21 Bottom plate; 22 Side plate; 23 Top plate; 3 Light source structure; 31 LED lamp; 32 Flexible circuit board; 4 Connector; 5 Main control board; 6 Driver chip; 7 Light source; 8 Display panel; 9 Reflector; 201 Hollow structure; 2001 Hollow hole. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.
[0028] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.
[0029] Figure 1 This is a schematic diagram of a display module in related technologies. Figure 2 This is a schematic diagram showing the connection state between the main control board 5 and the flexible circuit board 32 in the related technology. In the related technology, the light source structure 3 is located on the side of the light guide plate 1, and the light emission direction of the light source structure 3 is perpendicular to the light emission surface of the light guide plate 1, thereby forming a side-lit backlight. The light source structure 3 includes an LED lamp 31 and a flexible circuit board 32. The flexible circuit board 32 is bonded to the front of the back plate 2 through an adhesive layer. The main control board 5 is connected to the back of the back plate 2. That is to say, the light source structure 3 and the main control board 5 are independently set, resulting in low integration and hindering cost reduction and production efficiency improvement.
[0030] The flexible circuit board 32 is bent to the back of the back plate 2 to connect with the main control board 5 in order to drive the LED light 31 to light up. This requires openings on the side of the back plate 2 so that the flexible circuit board 32 can pass through the side of the back plate 2 and bend to the back of the back plate 2. The assembly process is complicated and difficult, and it reduces the strength of the module.
[0031] The connection between the flexible circuit board 32 and the main control board 5 requires the use of the connector 4 provided on the main control board 5. The connection between the flexible circuit board 32 and the connector 4 involves the issue of connection reliability, which is related to the quality of the display module.
[0032] refer to Figures 3-6 To address the aforementioned issues, this embodiment provides a display module, including a display panel 8 and a backlight assembly. The backlight assembly includes a light source 7, a backplate 2, and a main control board 5. The main control board 5 is located on the side of the backplate 2 away from the display panel 8, and the main control board 5 is connected to the display panel 8 via a flexible circuit board to transmit signals to the display panel 8.
[0033] The main control board 5 includes a first side disposed away from the back plate 2 and a second side disposed close to the back plate. The first side is provided with a driver chip 6 for controlling the display panel 8, and the second side is provided with a light source 7 for providing light to the display panel.
[0034] By adopting the above technical solution, the light source 7 is integrated with the main control board 5, relative to Figure 1 The structure in this design improves the integration of the device and eliminates the need for a flexible circuit board. The light source 7 is directly mounted on the main control board 5, thus eliminating the reliability issues associated with connecting the flexible circuit board to the main control board 5 via connectors. Furthermore, compared to… Figure 1 The opening on the side of the back panel, in this embodiment, is made on the bottom surface of the back panel, which improves the strength of the module.
[0035] In an exemplary embodiment, the light source 7 is located at one end of the main control board 5.
[0036] The light source 7 provides light to the display module to realize the display function of the display module. The display module includes the light source 7 and also includes a light guide plate 1 to provide a surface light source 7. The light source 7 can be located on the side of the light guide plate 1 to form a side-lit backlight 7. The display module includes a display area and a non-display area located around the periphery of the display area. The light source 7 is located at one end of the main control board 5 and is located within the non-display area.
[0037] refer to Figure 4In an exemplary embodiment, the light source 7 includes a plurality of LEDs, which are spaced apart on the main control board 5 along a first direction, the first direction being parallel to the extension direction of one side of the main control board 5.
[0038] The display module includes a display panel 8 and a backlight assembly. The backlight assembly includes a back plate, a light guide plate 1 and a light source 7 located within the back plate, and a main control board 5 located on the back side of the back plate. The light source 7 is located on the first side of the light guide plate 1. In an embodiment where the display module has a rectangular structure, the light guide plate 1 is rectangular, and the light source 7 is located on one side of the short side of the light guide plate 1 (i.e., one end of the light guide plate 1 in the length direction). Generally, the main control board 5 is also rectangular, and after the main control board 5 is assembled with the back plate, the extension direction of the long side of the main control board 5 is parallel to the extension direction of the long side of the light guide plate 1. In order to ensure that the distance between all the LEDs and the light guide plate 1 is consistent, multiple LEDs are arranged along the first direction, which is parallel to the extension direction of the short side of the main control board 5.
[0039] It should be noted that as long as the distance between the multiple LEDs and the light incident surface of the light guide plate 1 is consistent, the arrangement of the multiple LEDs can be set according to actual needs and is not limited to the above description.
[0040] It should be noted that the light source 7 can also be located on the bottom surface of the light guide plate 1 (the side opposite to the light emitting surface) to form a direct-lit backlight 7. In this case, the light source 7 can include multiple LEDs and be arranged in an array on the front side of the main control board 5 (after the main control board 5 is assembled with the back plate, the side of the main control board 5 connected to the back plate is the front side) to propagate light in the direction of the light guide plate 1.
[0041] It should be noted that the LED can be a white LED, which can provide white light. Different color filters can be used to filter the white light to achieve color display. Alternatively, the LED can be a single-color LED of different colors to reduce the use of color filters, thereby reducing the thickness of the display product.
[0042] Figure 5 This is a schematic diagram of the first side of the main control board 5. Electronic components such as a driver chip are disposed on the first side of the main control board 5, and the light source 7 is disposed on the second side. (See reference...) Figure 4 .
[0043] In an exemplary embodiment, the main control board 5 may be a printed circuit board (PCB) that can integrate high-density drive circuitry.
[0044] In an exemplary embodiment, the back plate includes a bottom plate 21 and a side plate 22. The main control board 5 is disposed on the side of the bottom plate 21 away from the display panel 8, and a hollow structure 201 is provided on the bottom plate 21 to allow the light source 7 to pass through.
[0045] It should be noted that the display module includes a display panel 8 and a backlight assembly. The backlight assembly includes a light guide plate 1, a light source 7, a back plate, and the main control board 5. The front side of the base plate 21 faces the light guide plate 1, and the back side of the base plate 21 (i.e., the side away from the display panel 8) is opposite to the front side of the base plate 21 (i.e., the side close to the display panel 8). The main control board 5 is disposed on the back side of the base plate 21. The light source 7 is disposed on the side of the main control board 5 used for connecting with the back plate (i.e., the second side). The base plate 21 of the back plate has a hollow structure 201 so that the light source 7 can pass through the hollow structure 201 to be located on the side of the light guide plate 1 to propagate light to the light guide plate 1 and provide the light source 7 for the display module.
[0046] refer to Figure 3 , Figure 4 and Figure 6 In an exemplary embodiment, the light source 7 includes a plurality of LEDs, which are spaced apart on the main control board 5 along a first direction, the first direction being parallel to the extension direction of one side of the main control board 5;
[0047] The hollow structure 201 includes a plurality of hollow holes 2001 spaced apart along the first direction, and the plurality of hollow holes 2001 are arranged in a one-to-one correspondence with the plurality of LEDs.
[0048] refer to Figure 7 In an exemplary embodiment, the hollow structure 201 includes a strip-shaped through hole extending along the first direction. The orthographic projection of the strip-shaped through hole on the main control board 5 completely covers the plurality of LEDs, so that all LEDs can pass through the strip-shaped through hole.
[0049] In an exemplary embodiment, the side plate 22 extends away from the bottom plate 21 and bends inward to form a top plate 23. The top plate 23 is located between the display panel 8 and the light guide plate 1. An adhesive layer is provided between the top plate 23 and the display panel 8 to connect and fix the display panel 8.
[0050] For example, the adhesive layer may be made of light-shielding tape to prevent light leakage.
[0051] In an exemplary embodiment, the display module further includes a light guide plate 1, the base plate 21 is located on the backlight side of the light guide plate 1, and the light source 7 passes through the hollow structure 201 and is located on the side of the light guide plate 1.
[0052] In an exemplary embodiment, an adhesive layer is provided between the base plate 21 and the main control board 5.
[0053] In an exemplary embodiment, a reflective sheet 9 is disposed between the light guide plate 1 and the back plate.
[0054] In an exemplary embodiment, an optical film is provided on the light-emitting side of the light guide plate 1.
[0055] For example, the optical film material includes a prism film and a diffusion film.
[0056] This invention also provides a display device, including the display module described above.
[0057] The display device can be any product or component with display function, such as an LCD TV, LCD monitor, digital photo frame, mobile phone, or tablet computer. The display device also includes a flexible circuit board, a printed circuit board, and a backplate.
[0058] The following points need to be explained:
[0059] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.
[0060] (2) For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the present disclosure, i.e., these drawings are not drawn to actual scale. It will be understood that when an element such as a layer, film, region or substrate is referred to as being “above” or “below” another element, the element may be “directly” located “above” or “below” the other element or there may be intermediate elements.
[0061] (3) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0062] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.
Claims
1. A display module, characterized in that, The device includes a display panel and a backlight assembly. The backlight assembly includes a light source, a back panel, and a main control board. The main control board is located on the side of the back panel away from the display panel, and the main control board is connected to the display panel via a flexible circuit board to transmit signals to the display panel. The main control board includes a first side disposed away from the back panel and a second side disposed close to the back panel. The first side is provided with a driver chip for controlling the display panel, and the second side is provided with a light source for providing light to the display panel.
2. The display module according to claim 1, characterized in that, The light source is located at one end of the main control board.
3. The display module according to claim 1, characterized in that, The light source includes multiple LEDs, which are spaced apart on the main control board along a first direction parallel to the extension direction of one side of the main control board.
4. The display module according to claim 1, characterized in that, The back panel includes a bottom plate and a side plate. The main control board is disposed on the side of the bottom plate away from the display panel, and the bottom plate has a hollow structure to allow the light source to pass through.
5. The display module according to claim 4, characterized in that, The light source includes multiple LEDs, which are spaced apart on the main control board along a first direction, which is parallel to the extension direction of one side of the main control board. The hollow structure includes a plurality of hollow holes spaced apart along the first direction, and the plurality of hollow holes are arranged in a one-to-one correspondence with the plurality of LEDs.
6. The display module according to claim 4, characterized in that, The light source includes multiple LEDs, which are spaced apart on the main control board along a first direction, which is parallel to the extension direction of one side of the main control board. The hollow structure includes a strip-shaped through hole extending along the first direction.
7. The display module according to claim 4, characterized in that, It also includes a light guide plate, with the base plate located on the backlight side of the light guide plate, and the light source passing through the hollow structure and located on the side of the light guide plate.
8. The display module according to claim 4, characterized in that, An adhesive layer is provided between the base plate and the main control board.
9. The display module according to claim 7, characterized in that, A reflective sheet is disposed between the light guide plate and the back plate.
10. A display device, characterized in that, Includes the display module as described in any one of claims 1-9.