Flexible Circuit Board Support Structure for Lamination Stability
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Solution Overview
Problem
In the false pressure test of flexible circuit boards, shifting during lamination leads to poor lamination effects and increased risk of misconnection and short-circuits, particularly due to height offsets between the flexible circuit board and the substrate, affecting the test success rate.
Innovation Solution
A flexible circuit board design featuring a support structure with a first and second support portion, where the first support portion aligns the extension and crimping portions to maintain level consistency, and the second support portion isolates the crimping portions to prevent residual conductor-induced short-circuits, enhancing the laminating effect and test success rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flexible circuit board is laminated on the substrate to be tested, then the electrical connection can be established, but the flexible circuit board may shift causing poor lamination and misconnection
Solution Approach 1:
The support structure is pre-formed on the flexible circuit board before lamination, creating a height difference that proactively prevents shifting during the lamination process. The first support portion raises the extension portion to the same level as the crimping portion, while the second support portion provides isolation, ensuring stable lamination without requiring post-adjustment.
2Adaptability or versatility
If the flexible circuit board is made flexible for bending, then it can be laminated on the substrate, but it is prone to shifting during lamination
Solution Approach 1:
The flexible circuit board has different structural properties in different regions: the extension portion maintains flexibility for bending and adaptation, while the crimping portion with its support structure provides local rigidity and stability. The support structure creates a height difference that locally stabilizes the crimping portion during lamination, allowing the board to be both flexible and stable where needed.
3Device complexity
If the crimping portions are placed close together for compact design, then space is saved, but residual conductors may cause short-circuits
Solution Approach 1:
The second support portion acts as an intermediary isolation layer placed between the first crimping portion and the second crimping portion. This intermediate structure physically separates the two crimping portions, preventing residual conductors from causing short-circuits while still allowing the overall design to remain compact. The isolation structure fills the space between crimping portions without requiring excessive spacing.
Data Source
AI summary
The present disclosure relates to the field of circuit testing technologies and discloses a flexible circuit board and a test fixture. The flexible circuit board comprises: a flexible body which has a first crimping portion and an extension portion, the first crimping portion being used to be laminated with a second crimping portion of a substrate to be tested; a first electrically connected structure which is located on a first side of the flexible body, arranged on the first crimping portion, and used to be laminated with a second electrically connected structure on the second crimping portion; a support structure which is located on the first side of the flexible body and includes a first support portion and a second support portion; the first support portion is arranged on the extension portion and configured to support the extension portion in the laminating state.