Flexible Circuit Board Wrapping Pivot Rod for Hinge Signal Routing
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Solution Overview
Problem
Conventional display modules face challenges in minimizing the space required for signal transmission wiring, particularly in designs where the hinge joint area is limited, such as in laptop computers, making it difficult to efficiently install and manage signal communication wiring.
Innovation Solution
The use of a flexible circuit board with a connecting section that wraps around a pivot rod, allowing the first transmission section to connect within the housing and the second transmission section to connect outside, effectively utilizing the limited hinge space for signal transmission between the display module and the main body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional wiring methods are used with separate communication holes, then signal transmission is achieved, but the space required for wiring and housing structure is increased
Solution Approach 1:
The patent combines the pivot rod and flexible circuit board into a single integrated structure. The pivot rod serves dual functions as both the mechanical hinge component and the signal transmission carrier, eliminating the need for separate wiring channels and communication holes. This merging of functions directly reduces the housing space required while maintaining signal transmission capability.
Solution Approach 2:
The pivot rod is designed to perform multiple functions simultaneously: it acts as the mechanical hinge for opening and closing the display module, serves as the structural support element, and functions as the signal transmission pathway through the integrated flexible circuit board. This multi-functionality eliminates the need for separate dedicated wiring structures.
2Stability of the object's composition
If the flexible circuit board is rigidly connected, then structural stability is improved, but the pulling effect during hinge rotation increases
Solution Approach 1:
The patent employs a flexible circuit board that can dynamically bend and deform as the hinge rotates. The flexibility allows the circuit board to adapt its shape during opening and closing motions, maintaining structural integrity while accommodating the dynamic movement. This dynamic flexibility reduces the pulling force that would occur with a rigid connection.
Solution Approach 2:
The circuit board is constructed using flexible printed circuit board (FPCB) technology, which utilizes thin, flexible circuit traces that can bend without breaking. This flexible film structure allows the circuit board to conform to the hinge rotation movement, reducing mechanical stress and pulling effects while maintaining electrical connectivity.
3Reliability
If more wiring is used to ensure signal transmission, then signal reliability is improved, but the space required for wiring installation is increased
Solution Approach 1:
The patent integrates the flexible circuit board directly onto the pivot rod, combining the signal transmission pathway with the mechanical hinge structure. This integration eliminates the need for separate wiring channels and reduces the overall space required for wiring installation while maintaining reliable signal transmission through the integrated structure.
Data Source
AI summary
A display module and an electronic device are provided. The display module includes a housing, a pivot rod, and a flexible circuit board. The housing has a connection portion, wherein the connection portion has a connecting hole. The pivot rod is partially disposed in the connecting hole. The flexible circuit board includes a first transmission section, a second transmission section, and a connecting section that connects the previous two sections. The connecting section is disposed in a traverse direction with respect to the extending directions of the first transmission section and the second transmission section and wraps around the pivot rod with the traverse direction as an axial direction, wherein the connecting section is at least partially disposed in the connecting hole such that the first transmission section is in the housing and the second transmission section is outside of the housing.