A wiring structure in the bending area of FPC
By setting a widening area of the trace and enhancing the strength of the bending area in the FPC, the problem of easy breakage of the FPC bending area is solved, and the normal use and stability of the FPC when connected to the motherboard is achieved.
Patent Information
- Application Number
- CN202421329987.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-11
AI Technical Summary
During the bending process of the FPC when connecting to the motherboard, the wiring at the bend is easily broken due to the bending effect, which affects the normal use of the FPC.
By providing a trace width zone in the bending area of the FPC, its width is greater than the trace width of the area outside the bending area, and the strength of the bending area and the stability of the trace are enhanced where necessary.
It effectively avoids the problem of wiring in the FPC bending area breaking during bending, ensuring the normal use and stability of the FPC when connected to the motherboard.
Smart Images
Figure CN222736355U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of FPC, in particular to a wiring structure in a bending area of an FPC. Background Art
[0002] The display module is usually equipped with an FPC, which connects the display module to the motherboard. The FPC is a flexible circuit board. After one end of the FPC is bound to the display module, the other end of the FPC needs to be bent to the back of the display module and connected to the motherboard.
[0003] The FPC in the prior art must be bent when connected to the motherboard. During the bending process, the bending part of the FPC is prone to affect the routing, thereby causing the routing to break and affecting the normal use of the FPC. Utility Model Content
[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a wiring structure in a bending area of an FPC.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] A routing structure of an FPC bending zone includes: a display module and an FPC bound to the display module, one end of the FPC is bound to the display module, the other end of the FPC is used to bend to the back of the display module and connected to a mainboard, routing is arranged on the FPC, and the routing width of the FPC at the bending portion is greater than the routing width of the FPC relative to the area outside the bending portion.
[0007] In one embodiment, a bending area is provided on the FPC, the bending area is located at a bending position of the FPC, and the FPC is bent along the bending area to the back side of the display module.
[0008] In one embodiment, the routing of the FPC at the bending zone is a routing widening zone, the routing of the FPC in an area outside the bending zone is a normal routing zone, and the width of the routing widening zone is greater than the width of the normal routing zone.
[0009] In one embodiment, the width of the routing widening area is 2-4 times the width of the normal routing area.
[0010] In one embodiment, the routing widening area is arranged in a rectangular shape.
[0011] In one embodiment, a flexible board for enhancing the strength of the bending zone is attached to the side of the FPC away from the bending zone.
[0012] In one embodiment, the surface of the routing widening area is coated with a PI reinforcement layer.
[0013] In one embodiment, one end of the FPC away from the display module is an interface end connected to a host, and a soldering pad is provided at the interface end, and the soldering pad is used to solder the interface end to a mainboard.
[0014] In one embodiment, the routing of the FPC near the interface end is an interface routing area, and the width of the interface routing area is 2-4 times the width of the normal routing area.
[0015] In one embodiment, the materials of the routing widening area, the normal routing area and the interface routing area are all copper.
[0016] Compared with the prior art, the utility model has at least the following advantages:
[0017] 1. The wiring structure of the FPC bending zone of the utility model widens the width of the wiring widening zone of the FPC in the bending zone, so that when the FPC is bent along the bending zone, the wiring in the bending zone is not easily damaged;
[0018] 2. The wiring structure of the FPC bending area of the utility model widens the width of the interface wiring area near the interface end of the FPC, thereby preventing the wiring of the FPC near the pad from being damaged due to bending during the assembly process. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.
[0020] Figure 1 A schematic diagram of the structure of a wiring structure in a bending area of an FPC provided by the utility model;
[0021] Figure 2 The utility model provides a side structural diagram of a wiring structure in a bending area of an FPC.
[0022] Description of the drawings: 10. Display module; 20. FPC; 21. Bending area; 22. Routing widening area; 23. Normal routing area; 24. Interface end; 241. Solder pad; 25. Interface routing area; 30. Flexible board; 40. PI reinforcement layer. DETAILED DESCRIPTION
[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.
[0024] A routing structure of the FPC bending area, refer to Figure 1, including a display module 10 and an FPC 20 bound to the display module 10, one end of the FPC 20 is bound to the display module 10, and the other end of the FPC 20 is used to be bent to the back of the display module 10 and connected to the mainboard.
[0025] Reference Figure 1 When the FPC 20 is bent, there is a bending point, and the bending point of the FPC 20 is the bending position of the FPC 20. A bending area 21 is provided on the FPC 20, and the bending area 21 is located at the bending point. The FPC 20 is bent along the bending area 21 to the back side of the display module 10.
[0026] Reference Figure 1 , the FPC 20 is provided with routing, wherein the routing of the FPC 20 at the bending area 21 is the routing widening area 22, and the routing of the FPC 20 in the area outside the bending area 21 is the normal routing area 23. The width of the routing widening area 22 is greater than the width of the normal routing area 23, so that when the FPC 20 is bent along the bending area 21, the routing widening area 22 at the bending area 21 is not easily broken due to bending.
[0027] Reference Figure 1 The width of the routing widening area 22 is 2-4 times the width of the normal routing area 23. By widening the width of the routing widening area 22, the width of the routing of the FPC 20 in the bending area 21 becomes larger, so that the routing is not easily damaged when bending.
[0028] Further, refer to Figure 1 The routing widening area 22 is arranged in a rectangular shape, and the shape of the routing widening area 22 is the same as that of the normal routing area 23, and only the width is different.
[0029] Reference Figure 2 A flexible board 30 is attached to the side of the FPC 20 away from the bending area 21. The flexible board 30 is used to enhance the strength of the bending area 21 so that the bending area 21 of the FPC 20 is not easily damaged when being bent. The flexible board 30 is made of a flexible material and can be bent.
[0030] Further, refer to Figure 2 The surface of the routing widening area 22 is coated with a PI reinforcement layer 40 , and the PI reinforcement layer 40 can prevent the routing widening area 22 from breaking during the bending process, thereby improving the strength of the routing widening area 22 .
[0031] Reference Figure 1 The end of the FPC 20 away from the display module 10 is an interface end 24 connected to the host. A soldering pad 241 is provided at the interface end 24. The connection between the FPC 20 and the mainboard is achieved by soldering the soldering pad 241 of the interface end 24 to the mainboard.
[0032] Reference Figure 1The wiring of the FPC20 near the interface end 24 is the interface wiring area 25. Since the interface wiring area 25 is close to the pad 241, the FPC20 will be bent during assembly after the interface end 24 is welded. Therefore, the FPC20 near the interface end 24 is prone to large bends, thereby damaging the interface wiring area 25.
[0033] Reference Figure 1 The width of the interface wiring area 25 is also 2-4 times the width of the normal wiring area 23. By increasing the width of the interface wiring area 25, the wiring of the FPC 20 close to the pad 241 is prevented from being damaged due to bending during the assembly process.
[0034] Reference Figure 1 The materials of the routing widening area 22, the normal routing area 23 and the interface routing area 25 are all copper.
[0035] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A wiring structure in a bending area of an FPC, characterized in that: include: A display module (10) and an FPC (20) bound to the display module (10), one end of the FPC (20) being bound to the display module (10), the other end of the FPC (20) being used to be bent to the back of the display module (10) to be connected to a mainboard, a wiring being arranged on the FPC (20), and a wiring width of the FPC (20) at a bending position being greater than a wiring width of the FPC (20) relative to an area outside the bending position.
2. The wiring structure of the FPC bending area according to claim 1, characterized in that: The FPC (20) is provided with a bending area (21), the bending area (21) is located at the bending position of the FPC (20), and the FPC (20) is bent along the bending area (21) to the back side of the display module (10).
3. The wiring structure of the FPC bending area according to claim 2, characterized in that: The routing of the FPC (20) at the bending zone (21) is a routing widening zone (22), the routing of the FPC (20) in an area outside the bending zone (21) is a normal routing zone (23), and the width of the routing widening zone (22) is greater than the width of the normal routing zone (23).
4. The wiring structure of the FPC bending area according to claim 3, characterized in that: The width of the routing widening area (22) is 2-4 times the width of the normal routing area (23).
5. The wiring structure of the FPC bending area according to claim 4, characterized in that: The routing widening area (22) is arranged in a rectangular shape.
6. The wiring structure of the FPC bending area according to claim 5, characterized in that: A flexible board (30) for enhancing the strength of the bending zone (21) is attached to the side of the FPC (20) facing away from the bending zone (21).
7. The wiring structure of the FPC bending area according to claim 6, characterized in that: The surface of the wiring widening area (22) is coated with a PI reinforcement layer (40).
8. The wiring structure of the FPC bending area according to claim 4, characterized in that: One end of the FPC (20) away from the display module (10) is an interface end (24) connected to a host computer, and a soldering pad (241) is provided at the interface end (24), and the soldering pad (241) is used to solder the interface end (24) to a mainboard.
9. The wiring structure of the FPC bending area according to claim 8, characterized in that: The routing of the FPC (20) close to the interface end (24) is an interface routing area (25), and the width of the interface routing area (25) is 2-4 times the width of the normal routing area (23).
10. The wiring structure of the FPC bending area according to claim 9, characterized in that: The materials of the routing widening area (22), the normal routing area (23) and the interface routing area (25) are all copper.