Display device control circuit board
By embedding the WiFi antenna in the wiring groove of the circuit board body and covering it with a protective layer, a fully enclosed structure is formed, which solves the problem of easy damage to the WiFi antenna and achieves efficient, low-cost assembly and signal stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-03
- Publication Date
- 2026-04-07
AI Technical Summary
Existing display devices' WiFi antennas are easily damaged by external impacts, and their assembly is inefficient and costly, requiring separate plugs and connecting cables.
The WiFi antenna is embedded in the wiring groove of the main body of the circuit board and covered with a protective layer to form a fully enclosed structure. Combined with the rigid substrate of the main body of the circuit board, it provides protection and integrates the WiFi module and wire connection to avoid damage from external impacts and vibrations.
It saves on connecting cables and plugging processes, improves assembly efficiency, reduces labor and material costs, and enhances the stability and signal reliability of WiFi antennas.
Smart Images
Figure CN121815548A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of circuit board technology, and in particular to a display device control circuit board. Background Technology
[0002] In existing technologies, the WiFi antenna of the display device is set up separately and needs to be connected to the WiFi module via a connecting cable, which requires a separate plug-in interface. After the WiFi antenna is connected to the WiFi module, it protrudes from the circuit board or is pulled to other spaces on the display device by the connecting cable, making it susceptible to damage from external impacts. Moreover, assembling the WiFi antenna and WiFi module by plugging them in generally requires manual cable connection, which not only significantly reduces assembly efficiency but also increases the cost of cable consumption and labor. Summary of the Invention
[0003] This application provides a backlight module to at least partially solve the above-mentioned technical problems.
[0004] To achieve the above objectives, according to a first aspect of this application, this application provides a display device control circuit board, comprising: The circuit board body is used to realize the control function of the display device. The circuit board body has a wire embedding groove, which is formed by the inward indentation of the surface of the circuit board body. The WiFi antenna is fixed in the buried cable groove; A protective layer is disposed within the buried cable groove and covers the WiFi antenna, with a portion of the WiFi antenna protruding from the protective layer to form a connection end; A WiFi module is mounted on the main body of the circuit board and is used to connect the display device to the network. Copper wires that directly connect the WiFi module to the connection end are arranged on the main body of the circuit board.
[0005] Optionally, the circuit board body is provided with wires, and the embedded wire groove is disposed away from the wires.
[0006] Optionally, the circuit board body has a first surface, the slot of the buried wire groove is located on the first surface, and the surface of the protective layer opposite to the WiFi antenna is flush with the first surface.
[0007] Optionally, the WiFi antenna includes a first WiFi antenna branch and a second WiFi antenna branch connected in parallel to the WiFi module; both the first WiFi antenna branch and the second WiFi antenna branch include a connecting part and a signal receiving part, and the connecting end is located at the end of the connecting part; wherein the length and width of the signal receiving part are both greater than the length and width of the connecting part.
[0008] Optionally, the WiFi antenna is in two sets, respectively connected to both sides of the WiFi module.
[0009] Optionally, the dielectric constant of the protective layer is ε, satisfying 2.1≤ε≤3.2; the depth of the WiFi antenna embedded in the main body of the circuit board is d, satisfying 0.30mm<d<0.50mm.
[0010] Optionally, the dielectric constant of the protective layer is ε, satisfying 3.4≤ε≤4.5; the depth to which the WiFi antenna is embedded in the main body of the circuit board is d, satisfying 0.10mm<d<0.25mm.
[0011] Optionally, it also includes an electromagnetic shielding cover, which is mounted on the circuit board body and covers the WiFi module.
[0012] Optionally, the connection trajectory formed by the electromagnetic shielding cover mounted on the circuit board motherboard is square.
[0013] A button module, an IR sensor, and an LED indicator are also installed on the main body of the circuit board. The distance between the IR sensor and the LED indicator is s, which satisfies 30mm < s < 40mm.
[0014] Optionally, the distance s between the IR sensor and the LED indicator is 33.8 mm.
[0015] According to a second aspect of this application, this application provides a display device including the aforementioned display device control circuit board.
[0016] The display control circuit board of this application, through the cooperation of the circuit board body, WiFi module and WiFi antenna, etc., the WiFi antenna is welded to the WiFi module and embedded in the circuit board body. The rigid substrate of the circuit board body itself forms a fully enclosed structure to protect the WiFi antenna. It not only integrates the WiFi antenna function and saves connection wires and plugging processes, but also can block the physical damage caused by external impact, vibration and environmental impurities to the WiFi antenna, avoiding the risk of WiFi antenna breakage and deformation due to external force.
[0017] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.
[0019] Figure 1 This is a schematic diagram of a structure in which the WiFi antenna of the display device control circuit board provided in an exemplary embodiment of the present disclosure is embedded in the main body of the circuit board; Figure 2 This is a schematic diagram of a display device control circuit board provided in an exemplary embodiment of this disclosure; Figure 3 This is a schematic diagram of a display device control circuit board provided in an exemplary embodiment of this disclosure; Figure 4 This is a schematic diagram of the structure of a WiFi antenna on a display device control circuit board provided in an exemplary embodiment of this disclosure.
[0020] Figure label: 1. Circuit board body; 2. WiFi module; 3. WiFi antenna; 4. Electromagnetic shielding cover; 5. IR sensor; 6. LED indicator; 7. Base adhesive; 8. Top adhesive; 9. Protective layer; 10. Embedded wire channel; 11. Connecting part; 12. Signal receiving part. Detailed Implementation
[0021] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.
[0022] In some embodiments, such as Figures 1 to 4As shown, this application provides a display device control circuit board, including a circuit board body 1, for implementing the control functions of the display device. The circuit board body 1 has a wire groove 10, which is formed by recessing the surface of the circuit board body 1 inward. A WiFi antenna 3 is fixed to the wire groove 10. A protective layer 9 is disposed in the wire groove 10 and covers the WiFi antenna 3, with a portion of the WiFi antenna 3 exposed from the protective layer 9, forming a connection end. A WiFi module 2 is disposed on the circuit board body 1 for connecting the display device to the network, and copper wires are arranged on the circuit board body 1 to directly connect the WiFi module 2 to the connection end.
[0023] A bottom layer of adhesive 7 for bonding the WiFi antenna 3 can be provided at the bottom of the buried cable groove 10 to enhance stability. The protective layer 9 can cover the WiFi antenna 3 in the buried cable groove 10 with the top layer of adhesive 8. In the display control circuit board of this application, through the cooperation of the circuit board body 1, the WiFi module 2, and the WiFi antenna 3, the WiFi antenna 3 is connected to the WiFi module 2, and the WiFi antenna 3 is directly buried on the circuit board body 1. The rigid substrate of the circuit board body 1 itself forms a fully enclosed structure to protect the WiFi antenna 3. This not only integrates the function of the WiFi antenna 3 and saves on connecting wires and plugging processes, but also blocks external impacts, vibrations, and environmental impurities from causing physical damage to the WiFi antenna 3, avoiding the risk of the WiFi antenna breaking or deforming due to external forces. In some embodiments, such as Figure 2 , Figure 3 As shown, the circuit board body 1 has wiring lines. When selecting the location of the wiring groove 10, the wiring lines are avoided as much as possible. Correspondingly, the WiFi antenna 3 is buried in an empty space where no wiring passes. The WiFi antenna 3 is buried as close as possible to the WiFi module 2 to reduce wiring. Multiple screw holes are generally provided on the circuit board body 1 for mounting and fixing the circuit board body 1. These screw holes are located in empty spaces where no wiring passes. During installation, screws are used to connect to the display device housing through the screw holes, placing the circuit board body 1 between the display screen and the housing.
[0024] In some embodiments, such as Figure 2 , Figure 3As shown, there are two sets of WiFi antennas 3, connected to both sides of the WiFi module 2 respectively. The WiFi antennas 3 can be a single set, close to and connected to the WiFi module 2. Alternatively, there can be multiple sets of WiFi antennas 3, each connected to the WiFi module 2. Fewer sets of WiFi antennas 3 result in a weaker signal, while more sets result in a stronger signal. However, more sets of WiFi antennas 3 occupy more space on the main board 1 and make wiring more inconvenient. Therefore, two sets are preferred, connected to both sides of the WiFi module 2, which improves signal reliability without excessively occupying space on the main board 1.
[0025] In some embodiments, such as Figure 1 As shown, the dielectric constant of the protective layer 9 is ε, satisfying 2.1≤ε≤3.2; the depth of the WiFi antenna 3 embedded in the circuit board body 1 is d, satisfying 0.30mm<d<0.50mm. The dielectric constant ε, satisfying 2.1≤ε≤3.2, is mainly for PTFE (dielectric constant is 2.1) and cyanate ester resin (dielectric constant is 2.7-3.2). The lower the dielectric constant, the faster the signal transmission speed, and the deeper the WiFi antenna 3 can be embedded. The thickness of the circuit board body 1 in the display device is generally between 1.6mm and 3mm. In this embodiment, the thickness of the circuit board body 1 is 2.0mm as an example. A downwardly extending buried groove 10 is provided on the upper surface of the circuit board body 1. The depth d of the WiFi antenna 3 embedded in the circuit board body 1 refers to the distance between the upper surface of the WiFi antenna 3 and the upper surface of the circuit board body 1 after the WiFi antenna 3 is embedded in the buried groove 10. First, a base layer of adhesive 7 needs to be applied to the wire embedding groove 10. After the WiFi antenna 3 is embedded, it adheres to the base layer of adhesive 7. Then, a top layer of adhesive 8 is applied to the upper surface of the WiFi antenna 3. Next, a protective layer 9 is filled into the wire embedding groove 10 and adhered to the top layer of adhesive 9 to achieve a sealed and fixed WiFi antenna 3. The protective layer 9 can be filled with a resin material that is the same as that used in the circuit board body 1.
[0026] In some embodiments, such as Figure 1 As shown, the circuit board body 1 has a first surface, the opening of the buried wire groove 10 is located on the first surface, and the protective layer 9, facing away from the WiFi antenna 3, is flush with the first surface. It is optimal to ensure that the protective layer 9 is flush with the first surface of the circuit board body 1 during filling. If the protective layer 9 is too thin, it cannot completely fill the buried wire groove 10, resulting in poor mechanical stability of the WiFi antenna 3, which is prone to detaching from the buried wire groove 10. If the protective layer 9 is too thick, it will overflow the buried wire groove 10, increasing the weight of the entire circuit board body 1 and occupying more three-dimensional space, affecting the circuit layout.
[0027] In some embodiments, such as Figure 1As shown, the dielectric constant of the protective layer 9 is ε, satisfying 3.4 ≤ ε ≤ 4.5; the depth d into which the WiFi antenna 3 is embedded in the circuit board body 1 is 0.10 mm < d < 0.25 mm. The dielectric constant ε, satisfying 3.4 ≤ ε ≤ 4.5, is primarily for polyimide (dielectric constant 3.4), bismaleimide resin (dielectric constant 3.7-4.2), and epoxy resin (dielectric constant 3.8-4.5). A higher dielectric constant results in slower signal transmission speed, requiring a shallower embedding of the WiFi antenna 3. A deeper embedding depth d of the WiFi antenna 3 into the circuit board body 1 provides more mechanical protection, but also requires a thicker protective layer, increasing cost. Conversely, a shallower embedding depth d of the WiFi antenna 3 provides less mechanical protection, but also requires a thinner protective layer 9, resulting in lower cost. Taking all the above factors into consideration during the design process, the depth d of the WiFi antenna 3 embedded in the main body 1 of the circuit board satisfies 0.10mm < d < 0.25mm.
[0028] In some embodiments, such as Figure 2 , Figure 3 As shown, it also includes an electromagnetic shielding cover 4, which is mounted on the circuit board body 1 and covers the WiFi module 2. The electromagnetic shielding cover 4 is a metal structure used to prevent electromagnetic interference (EMI), primarily protecting electronic equipment and circuits from external electromagnetic fields while preventing internal electromagnetic fields from spreading outwards. In this design, it protects the WiFi module 2, improving its stability and reliability.
[0029] Furthermore, the connection trajectory formed by the electromagnetic shield 4 mounted on the circuit board motherboard is square. The basic structure of the electromagnetic shield 4 typically includes legs and a shield body, with the legs movably connected to the shield body. The shield body is spherical and suitable for electronic devices such as mobile phones and monitors. The electromagnetic shield 4 is usually made of conductive materials (such as copper, aluminum, iron, etc.) and can effectively isolate electromagnetic waves. In this embodiment, the square connection trajectory formed by the electromagnetic shield 4 mounted on the circuit board motherboard means that there are four legs, and the four legs are connected sequentially to form a square. It is worth noting that the electromagnetic shield 4 can also consist only of a shield body, with a square opening at the bottom of the shield body. The WiFi module can enter the space covered by the shield body through the opening, and the square opening is soldered to the main body of the circuit board 1.
[0030] In some embodiments, such as Figure 1 , Figure 2As shown, a button module, an IR sensor 5, and an LED indicator 6 are also installed on the main body 1 of the circuit board. The distance between the IR sensor 5 and the LED indicator 6 is s, satisfying 30mm < s < 40mm. The IR sensor is used to detect changes in objects or the environment, which is achieved through the emission and reception of infrared light. In this embodiment, it serves as a signal transmitting and receiving device for an infrared remote control. The LED indicator is used to display the status of the device or system, such as power status and signal status. In this embodiment, it serves as a status indication signal for the display device. Both play different roles in the display device, working together to support the normal operation and status monitoring of the device.
[0031] The IR sensor 5 and the LED indicator 6 are both mounted on a single circuit board 1. Both involve light; the IR sensor 5 transmits and receives signals via infrared light, while the LED indicator 6 emits red, yellow, and green light. If they are too close, the indicator light from the LED indicator 6 may interfere with the signal from the IR sensor 5. If they are too far apart, a longer circuit board 1 is required, occupying more space and increasing the overall cost of the display device. Therefore, in this embodiment, the distance s between the two is designed to be between 30mm and 40mm. Within this range, the interference between the two is relatively small and is also within the normal range of the circuit board 1, without adding extra design difficulty or cost. More preferably, the spacing s between the IR sensor 5 and the LED indicator 6 is 33.8mm.
[0032] It is worth noting that a button module is installed on the main body 1 of the circuit board. Combined with the WiFi module and the IR sensor (i.e., the IR module), there is no need to set up a separate circuit board. The three circuit boards with different functions are integrated into one main body 1, which improves the automation level of the whole machine assembly line, increases production efficiency, and reduces labor costs. While the signal transmission quality is almost unaffected, the cost of WiFi antenna 3 and inter-board connection cables, as well as manual plugging costs, are reduced.
[0033] In some embodiments, such as Figure 1 , Figure 2As shown, the WiFi antenna 3 includes a first WiFi antenna branch and a second WiFi antenna branch connected in parallel to the WiFi module 2. Both the first and second WiFi antenna branches include a connecting part 11 and a signal receiving part 12. The length and width of the signal receiving part 12 are greater than the length and width of the connecting part 11. The WiFi antenna 3 is generally in two sets, connected to both sides of the WiFi module 2. Each set of WiFi antennas 3 includes a first WiFi antenna branch and a second WiFi antenna branch, which are connected in parallel. Both the first and second WiFi antenna branches can receive signals and transmit them to the WiFi module 2. Because they are connected in parallel, if one fails, the other can continue to operate, providing good fault tolerance. The signal receiving part 12 receives WiFi signals, and the connecting part 11 transmits the WiFi signals received by the signal receiving part 12 to the WiFi module 2. Therefore, the length and width of the signal receiving part 12 are designed to be larger than the length and width of the connecting part 11, facilitating signal capture and reception.
[0034] According to a second aspect of this application, this application provides a display device that uses the aforementioned display device control circuit board, which has the beneficial effects of the aforementioned display device control circuit board, and will not be elaborated further.
[0035] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0036] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0037] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.
[0038] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.
Claims
1. A display device control circuit board, characterized in that, include: The circuit board body (1) is used to realize the control function of the display device. The circuit board body (1) has a wire groove (10), which is formed by the inward recess of the surface of the circuit board body (1). WiFi antenna (3) is fixed to the buried cable groove (10); A protective layer (9) is disposed in the buried cable groove (10) and covers the WiFi antenna (3). Part of the WiFi antenna (3) is exposed from the protective layer (9) to form a connection end. WiFi module (2) is disposed on the main body of the circuit board (1) and is used to connect the display device to the network. Copper wires that directly connect the WiFi module (2) and the connection end are arranged on the main body of the circuit board (1).
2. The display device control circuit board according to claim 1, characterized in that, The circuit board body (1) is provided with wires, and the buried wire groove (10) is set away from the wires.
3. The display device control circuit board according to claim 1, characterized in that, The circuit board body (1) has a first surface, the slot of the buried wire groove (10) is located on the first surface, and the protective layer (9) is flush with the first surface on the surface away from the WiFi antenna (3).
4. The display device control circuit board according to claim 1, characterized in that, The WiFi antenna (3) consists of two sets, which are respectively connected to both sides of the WiFi module (2).
5. The display device control circuit board according to claim 4, characterized in that, Each WiFi antenna (3) includes a first WiFi antenna branch and a second WiFi antenna branch connected in parallel to the WiFi module (2); both the first WiFi antenna branch and the second WiFi antenna branch include a connecting part (11) and a signal receiving part (12), with the connecting end located at the end of the connecting part (11); wherein the length and width of the signal receiving part (12) are both greater than the length and width of the connecting part (11).
6. The display device control circuit board according to claim 1, characterized in that, The dielectric constant of the protective layer (9) is ε, which satisfies 2.1≤ε≤3.2; the WiFi antenna (3) is embedded in the circuit board body (1) to a depth of d, which satisfies 0.30mm<d<0.50mm.
7. The display device control circuit board according to claim 1, characterized in that, The dielectric constant of the protective layer (9) is ε, which satisfies 3.4≤ε≤4.5; the WiFi antenna (3) is embedded in the circuit board body (1) to a depth of d, which satisfies 0.10mm<d<0.25mm.
8. The display device control circuit board according to claim 1, characterized in that, It also includes an electromagnetic shield (4), which is mounted on the circuit board body (1) and covers the WiFi module (2).
9. The display device control circuit board according to claim 8, characterized in that, The connection trajectory formed by the electromagnetic shield (4) installed on the main board of the circuit board is square.
10. The display device control circuit board according to claim 1, characterized in that, A button module, an IR sensor (5) and an LED indicator (6) are also installed on the main body (1) of the circuit board. The distance between the IR sensor (5) and the LED indicator (6) is s, which satisfies 30mm < s < 40mm.
11. The display device control circuit board according to claim 10, characterized in that, The distance s between the IR sensor (5) and the LED indicator (6) is 33.8 mm.
12. A display device, characterized in that, Includes the display device control circuit board as described in any one of claims 1 to 11.