Flexible Substrate Wire Arrangement for Crack Prevention

The patent applies beforehand cushioning by introducing a reinforcement structure (such as a rigid backing plate or strengthened substrate layer) at the vulnerable wired pattern regions before cracks can develop. This reinforcement acts as a preventive measure that absorbs and distributes mechanical stress during repeated deformations, preventing minute cracks from forming in the wired patterns at both ends of the flexible substrate while allowing the strobe light emitting portion to maintain its movability between storage and light emitting positions.

The patent applies composite materials by constructing the flexible substrate with multiple layers including conductive wired patterns on a flexible substrate material, with additional reinforcement layers (such as rigid backing plates or strengthened polymer layers) at the wired pattern regions. This composite structure allows the substrate to carry relatively large currents needed for strobe operation while the reinforcement layers provide thermal management and mechanical protection, preventing crack progression even under high current conditions and temperature rise.

The patent applies segmentation by dividing the flexible substrate into distinct functional zones: a flexible region that accommodates slack and allows range of motion, and a reinforced region with wired patterns that is protected from deformation. The reinforcement structure creates a clear separation between the flexible portion needed for ease of operation and the critical wired pattern areas, allowing the substrate to maintain its slack and range of motion while preventing minute cracks from forming at the wired pattern ends through localized stress distribution.