PCB assembly and LED display screen
By setting grooves and conductive sheets on the PCB board, and attaching conductive lines to one side of the conductive sheets, the physical and layout limitations caused by the increase in line width are solved, the current carrying capacity is improved, wiring space is saved, and current transmission efficiency and system stability are enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN LEYARD OPTO ELECTRONICS
- Filing Date
- 2025-06-16
- Publication Date
- 2026-07-14
AI Technical Summary
On a PCB board, simply increasing the line width to improve current carrying capacity will encounter both physical and layout limitations, resulting in limited current carrying capacity.
Grooves are set on the PCB board, and conductive sheets are fixed in the grooves along their length. Conductive lines are connected to the conductive sheets and attached to one side of the conductive sheets. The length direction of the conductive lines is consistent with that of the conductive sheets. The current carrying capacity is improved by increasing the width of the conductive lines, while keeping the original integrated circuit layout unchanged.
It effectively improves the current carrying capacity of conductive lines, avoids conflicts with adjacent integrated circuits, saves wiring space, reduces PCB costs, and improves current transmission efficiency and circuit system stability.
Smart Images
Figure CN224503598U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of LED display technology, and more specifically, to a PCB assembly and an LED display screen. Background Technology
[0002] In circuit board design, linewidth setting is a crucial detail. Within the limited space of a PCB (Printed Circuit Board), linewidth design must not only meet electrical performance requirements but also consider the overall size of the PCB and the high-density layout of integrated circuits. As electronic devices evolve towards smaller, faster, and smarter designs, the number of integrated circuits on PCBs is increasing dramatically, resulting in limited available wiring area. Linewidth refers to the width of the wires.
[0003] In order to reduce resistance and inductance and improve current carrying capacity, it is necessary to increase the line width. However, when the line width is increased, it will directly touch the physical boundary of the PCB board or conflict with adjacent integrated circuits. Therefore, relying solely on increasing the line width to improve current carrying capacity will encounter both physical and layout limitations. Utility Model Content
[0004] The main purpose of this invention is to provide a PCB assembly and an LED display screen to solve the problem that relying solely on increasing line width to improve current carrying capacity in related technologies will encounter dual limitations in terms of physical properties and layout.
[0005] To achieve the above objectives, according to one aspect of the present invention, a PCB assembly is provided, comprising: a PCB board having grooves; a conductive sheet fixed in the grooves along its length; and a conductive wire connected to the conductive sheet, wherein the conductive wire is attached to one side of the entire conductive sheet, and the length direction of the conductive wire is consistent with the length direction of the conductive sheet.
[0006] Furthermore, the width of the conductive wire is greater than the width of the trench.
[0007] Furthermore, the PCB assembly also includes a first conductive connection layer, through which the conductive sheet is fixed in the trench.
[0008] Furthermore, the PCB assembly also includes a second conductive connection layer, through which the conductive lines are connected to the conductive sheets.
[0009] Furthermore, there are two second conductive connection layers, which are located on both sides of the conductive sheet.
[0010] Furthermore, the ratio between the depth of the trench and the thickness of the PCB board is between 1 / 2 and 7 / 10.
[0011] Furthermore, the conductive sheet has a connecting surface exposed outside the trench, the connecting surface is connected to the conductive line, and the connecting surface is flush with the surface of the PCB board facing the conductive line.
[0012] Furthermore, there are multiple trenches, conductive sheets, and conductive lines. Multiple trenches are spaced apart on the PCB board, multiple conductive sheets are fixed in the multiple trenches one by one, and multiple conductive lines are connected to the multiple conductive sheets one by one.
[0013] Furthermore, the multiple conductive lines include a positive terminal connection wire and a ground connection wire. The PCB assembly also includes multiple integrated circuits disposed on the PCB board, with the positive terminal of each integrated circuit connected to the positive terminal connection wire and the positive terminal of each integrated circuit connected to the ground connection wire.
[0014] According to another aspect of the present invention, an LED display screen is provided, comprising: a PCB assembly and an LED display unit electrically connected to the PCB assembly, wherein the PCB assembly is the aforementioned PCB assembly.
[0015] The PCB assembly using the technical solution of this utility model includes: a PCB board, a conductive sheet, and conductive lines. Grooves are provided on the PCB board. The conductive sheet is fixed within the grooves along its length. The conductive lines are connected to the conductive sheet, and the conductive lines are attached to one side of the entire conductive sheet, with the length direction of the conductive lines consistent with the length direction of the conductive sheet. Since the grooves not only accommodate the conductive sheet but also define the position of the conductive lines, the number and layout of the original integrated circuits on the PCB board surface are not changed. Moreover, because the conductive lines are attached to one side of the entire conductive sheet, the arrangement of the conductive sheet can increase the width of the conductive lines, thereby improving the current-carrying capacity. Thus, the arrangement of the conductive sheet and conductive lines in this application avoids touching the physical boundaries of the PCB board and also avoids conflicts with adjacent integrated circuits, solving the problem of dual physical and layout limitations encountered in related technologies that rely solely on increasing line width to improve current-carrying capacity. Furthermore, since the conductive wire is attached to one side of the entire conductive sheet, and the length direction of the conductive wire is consistent with the length direction of the conductive sheet, the width of the conductive wire is increased along the length direction of the conductive wire on the same cross-section of both the conductive wire and the conductive sheet, which can effectively improve the current carrying capacity of the conductive wire. Attached Figure Description
[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:
[0017] Figure 1 A perspective view of an embodiment of a PCB assembly according to the present invention, showing a conductive sheet and a conductive line;
[0018] Figure 2 It shows Figure 1 An enlarged view of point A of the PCB assembly;
[0019] Figure 3 It shows Figure 1 A partial cross-sectional view of the PCB assembly;
[0020] Figure 4 A perspective view of an embodiment of a PCB assembly according to the present invention is shown, comprising two conductive sheets and two conductive lines.
[0021] The above figures include the following reference numerals:
[0022] 1. PCB board; 11. Trench;
[0023] 2. Conductive sheet; 21. Connecting surface;
[0024] 3. Conductive wire; 31. Positive terminal connection wire; 32. Grounding connection wire;
[0025] 4. First conductive connection layer;
[0026] 5. Second conductive connection layer;
[0027] 6. Integrated circuits. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. It should be noted that the terminology used herein is only for describing specific implementations and is not intended to limit the exemplary implementations according to this application.
[0029] like Figures 1 to 3 As shown, according to one aspect of this application, a PCB assembly is provided. An embodiment of the PCB assembly includes: a PCB board 1, a conductive sheet 2, and conductive lines 3. A groove 11 is provided on the PCB board 1. The conductive sheet 2 is fixed within the groove 11 along its length direction. The conductive lines 3 are connected to the conductive sheet 2, and the conductive lines 3 are attached to one side of the entire conductive sheet 2, with the length direction of the conductive lines 3 consistent with the length direction of the conductive sheet 2.
[0030] The technical solution of the embodiment of the PCB assembly includes: a PCB board 1, a conductive sheet 2, and conductive lines 3. A groove 11 is provided on the PCB board 1. The conductive sheet 2 is fixed within the groove 11 along its length direction. The conductive lines 3 are connected to the conductive sheet 2, and the conductive lines 3 are attached to one side of the entire conductive sheet 2, with the length direction of the conductive lines 3 consistent with the length direction of the conductive sheet 2. Since the groove 11 not only accommodates the conductive sheet 2 but also defines the position of the conductive lines 3, the number and layout of the original integrated circuits on the surface of the PCB board 1 are not changed. Moreover, since the conductive lines 3 are attached to one side of the entire conductive sheet 2, the arrangement of the conductive sheet 2 can increase the width of the conductive lines 3, thereby improving the current carrying capacity. Thus, the arrangement of the conductive sheet 2 and conductive lines 3 in this application avoids touching the physical boundaries of the PCB board and also avoids conflict with adjacent integrated circuits, solving the problem of dual physical and layout limitations encountered in related technologies where increasing the line width alone is used to improve current carrying capacity. Furthermore, since the conductive wire covers one side of the entire conductive sheet, and the length direction of the conductive wire is consistent with the length direction of the conductive sheet, the width of the conductive wire is increased along its length direction on the same cross-section of both the conductive wire and the conductive sheet. This effectively improves the current-carrying capacity of the conductive wire. Thus, in the PCB assembly of this embodiment, the current-carrying capacity of the conductive wire 3 is increased without increasing the thickness of the conductive sheet 2, and the space for PCB wiring is effectively saved, which helps to reduce PCB costs.
[0031] It should be noted that the conductive sheet 2 is preferably a copper sheet.
[0032] like Figures 1 to 3 As shown, the width of the conductive line 3 is greater than the width of the trench 11. This allows the conductive line 3 to utilize the space of the trench 11, thereby significantly increasing the current carrying capacity without changing the surface layout of the PCB board 1, and solving the problem of current carrying capacity being affected by line width limitations.
[0033] like Figures 1 to 3 As shown, the PCB assembly also includes a first conductive connection layer 4, through which the conductive sheet 2 is fixed within the trench 11. The first conductive connection layer 4 ensures the stability and reliability of the conductive sheet 2 within the trench 11. The first conductive connection layer 4 is preferably a first solder paste layer. There are two first conductive connection layers 4, located on opposite sides of the conductive sheet 2, so that the conductive sheet 2 is filled and stably fixed within the trench 11.
[0034] like Figures 1 to 3As shown, the PCB assembly also includes a second conductive connection layer 5, through which the conductive line 3 is connected to the conductive sheet 2. The second conductive connection layer 5 ensures good electrical contact between the conductive line 3 and the conductive sheet 2, reducing contact resistance, thereby reducing power consumption and improving current transmission efficiency. The second conductive connection layer 5 is preferably a second solder paste layer. Furthermore, the second solder paste layer and the first solder paste layer are integrally connected.
[0035] like Figures 1 to 3 As shown, there are two second conductive connection layers 5, located on opposite sides of the conductive sheet 2. This increases the connection area between the conductive sheet 2 and the conductive line 3, further reducing contact resistance, enhancing current flow, and improving connection reliability. The two second conductive connection layers 5 are also connected to the surface of the conductive line 3 facing the PCB board 1.
[0036] like Figures 1 to 3 As shown, the ratio between the depth of the trench 11 and the thickness of the PCB board 1 is between 1 / 2 and 7 / 10. This ratio range ensures sufficient current carrying capacity without weakening the mechanical strength of the PCB board 1, achieving a balance between current carrying capacity and structural stability.
[0037] Preferably, the ratio between the depth of the trench 11 and the thickness of the PCB board 1 is 1 / 2, 3 / 5, or 7 / 10.
[0038] like Figures 1 to 3 As shown, the conductive sheet 2 has a connecting surface 21 exposed outside the trench 11. The connecting surface 21 is connected to the conductive line 3, and the connecting surface 21 is flush with the surface of the PCB board 1 facing the conductive line 3. In this way, the conductive sheet 2 is completely located within the trench 11 without occupying space on the surface of the PCB board 1, which can effectively avoid the possibility of conflict with adjacent integrated circuits.
[0039] like Figures 1 to 4 As shown, there are multiple trenches 11, conductive sheets 2, and conductive lines 3. Multiple trenches 11 are spaced apart on the PCB board 1, multiple conductive sheets 2 are fixed one-to-one within the multiple trenches 11, and multiple conductive lines 3 are connected one-to-one with the multiple conductive sheets 2. The arrangement of multiple trenches 11, multiple conductive sheets 2, and multiple conductive lines 3 allows this technical solution to be flexibly applied to high-current transmission scenarios with different requirements, improving the overall current carrying capacity of the PCB board 1 and the flexibility of circuit design. The term "multiple" refers to a minimum of two.
[0040] like Figures 1 to 4As shown, the multiple conductive lines 3 include a positive terminal connection wire 31 and a ground connection wire 32. The PCB assembly also includes multiple integrated circuits 6 mounted on the PCB board 1. The positive terminal of each integrated circuit 6 is connected to the positive terminal connection wire 31, and the positive terminal of each integrated circuit 6 is connected to the ground connection wire 32. The configuration of the positive terminal connection wire 31 and the ground connection wire 32, along with their connection to the multiple integrated circuits 6, ensures that each integrated circuit 6 receives a stable power supply and a good grounding line, which is crucial for ensuring the stability of the integrated circuit's operation.
[0041] From another perspective, the various technical solutions in the embodiments of the PCB assembly also have the following advantages:
[0042] Furthermore, the width of the conductive line 3 is greater than the width of the trench 11. This design allows the conductive line 3 to fully utilize the internal space of the trench 11 and the thickness of the surrounding portion of the PCB board 1, thereby significantly increasing the effective area of the current-carrying path while maintaining the original surface layout of the PCB board 1, significantly improving the current carrying capacity, and effectively addressing the current carrying capacity problem caused by the limited line width.
[0043] Furthermore, the PCB assembly also includes a first conductive connection layer 4, through which the conductive sheet 2 is fixed within the trench 11. The introduction of the first conductive connection layer 4 ensures the secure fixation of the conductive sheet 2 within the trench 11, preventing positional displacement of the conductive sheet 2 due to vibration or thermal expansion and contraction, thereby enhancing the structural stability and electrical reliability of the PCB assembly.
[0044] Furthermore, the PCB assembly also includes a second conductive connection layer 5, through which the conductive line 3 is connected to the conductive sheet 2. The function of the second conductive connection layer 5 is to form a stable electrical contact between the conductive line 3 and the conductive sheet 2, which greatly reduces the contact resistance at the contact interface, thereby effectively reducing energy loss, improving current transmission efficiency, and meeting the needs of high current transmission.
[0045] Furthermore, there are two second conductive connection layers 5, located on opposite sides of the conductive sheet 2. This improvement increases the contact area between the conductive wire 3 and the conductive sheet 2, further reducing the contact resistance, while also enhancing the stability of the connection between the conductive sheet 2 and the conductive wire 3, providing a more reliable and efficient solution for high-current transmission.
[0046] Furthermore, the ratio between the depth of the trench 11 and the thickness of the PCB board 1 is between 1 / 2 and 7 / 10. This design ratio ensures that the vertical space of the PCB board 1 is maximized without compromising its overall strength, thereby increasing the width and capacity of the current transmission path and achieving a balance between current carrying capacity and structural stability.
[0047] Furthermore, the conductive sheet 2 has a connecting surface 21 exposed outside the trench 11. The connecting surface 21 is connected to the conductive line 3, and the connecting surface 21 is flush with the surface of the PCB board 1 facing the conductive line 3. The flush design of the connecting surface 21 makes the connection between the conductive sheet 2 and the surface circuit of the PCB board 1 tighter and smoother, avoiding the impact of additional height on the overall layout, which is conducive to the dense arrangement of integrated circuits 6, while ensuring the smoothness and reliability of current transmission.
[0048] Furthermore, there are multiple trenches 11, conductive sheets 2, and conductive lines 3. Multiple trenches 11 are spaced apart on the PCB board 1, multiple conductive sheets 2 are fixed one-to-one within the multiple trenches 11, and multiple conductive lines 3 are connected one-to-one with the multiple conductive sheets 2. This series of "multiple" arrangements greatly improves the flexibility of current transmission and the total current carrying capacity of the PCB assembly, adapting to different power requirements and complex circuit wiring, and enhancing the diversity and adaptability of circuit design.
[0049] Furthermore, the multiple conductive lines 3 include a positive terminal connecting wire 31 and a ground connecting wire 32. The PCB assembly also includes multiple integrated circuits 6 disposed on the PCB board 1. The positive terminal of each integrated circuit 6 is connected to the positive terminal connecting wire 31, and the ground terminal of each integrated circuit 6 is connected to the ground connecting wire 32. This specific wire ratio and connection method provides a stable and reliable power supply and grounding path for the multiple integrated circuits 6, significantly improving the electromagnetic compatibility of the circuit system and ensuring the normal operation of the integrated circuits 6 and the overall performance of the circuit system.
[0050] According to another aspect of this application, an LED display screen is provided. An embodiment of the LED display screen includes: a PCB assembly and an LED display unit electrically connected to the PCB assembly, wherein the PCB assembly is the aforementioned PCB assembly. Electrically connecting the PCB assembly to the LED display unit not only effectively improves the current carrying capacity of the LED display screen, ensuring its normal operation under high loads, but also reduces the internal space occupied by the LED display screen through optimized circuit design, making the LED display screen thinner and lighter. Here, LED is an abbreviation for "Light Emitting Diode," a semiconductor device that converts electrical energy into light energy. When current passes through it, the LED emits light of a specific wavelength; this process is called electroluminescence.
[0051] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.
[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A PCB assembly, characterized in that, include: PCB board (1), on which grooves (11) are provided; A conductive sheet (2) is fixed in the groove (11) along its length. A conductive wire (3) is connected to the conductive sheet (2), and the conductive wire (3) is attached to one side of the entire conductive sheet (2). The length direction of the conductive wire (3) is consistent with the length direction of the conductive sheet (2).
2. The PCB assembly according to claim 1, characterized in that, The width of the conductive line (3) is greater than the width of the trench (11).
3. The PCB assembly according to claim 1, characterized in that, The PCB assembly also includes a first conductive connection layer (4), and the conductive sheet (2) is fixed in the trench (11) through the first conductive connection layer (4).
4. The PCB assembly according to claim 1, characterized in that, The PCB assembly further includes a second conductive connection layer (5), and the conductive line (3) is connected to the conductive sheet (2) through the second conductive connection layer (5).
5. The PCB assembly according to claim 4, characterized in that, There are two second conductive connection layers (5), and the two second conductive connection layers (5) are located on both sides of the conductive sheet (2).
6. The PCB assembly according to any one of claims 1 to 5, characterized in that, The ratio between the depth of the trench (11) and the thickness of the PCB board (1) is between 1 / 2 and 7 / 10.
7. The PCB assembly according to any one of claims 1 to 5, characterized in that, The conductive sheet (2) has a connecting surface (21) exposed outside the groove (11), the connecting surface (21) is connected to the conductive line (3), and the connecting surface (21) is flush with the surface of the PCB board (1) facing the conductive line (3).
8. The PCB assembly according to any one of claims 1 to 5, characterized in that, There are multiple trenches (11), conductive sheets (2) and conductive lines (3). Multiple trenches (11) are spaced apart on the PCB board (1). Multiple conductive sheets (2) are fixed in the multiple trenches (11) one by one. Multiple conductive lines (3) are connected to the multiple conductive sheets (2) one by one.
9. The PCB assembly according to claim 8, characterized in that, The plurality of conductive lines (3) include a positive terminal connecting wire (31) and a ground connecting wire (32). The PCB assembly also includes a plurality of integrated circuits (6) disposed on the PCB board (1). The positive terminal of each integrated circuit (6) is connected to the positive terminal connecting wire (31), and the positive terminal of each integrated circuit (6) is connected to the ground connecting wire (32).
10. An LED display screen, comprising: A PCB assembly and an LED display unit electrically connected to the PCB assembly, characterized in that the PCB assembly is any one of claims 1 to 9.