Segmented Flexible Wiring Board Layout for Higher Laminate Yield
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Solution Overview
Problem
The production of flexible wiring boards on laminate sheets results in low yield due to inefficient arrangement, particularly as the size of the light control sheet increases, leading to a smaller ratio of the flexible wiring boards' area to the total laminate sheet area.
Innovation Solution
A flexible wiring board unit comprising first, second, and third flexible wiring boards, where the third board is connected to the first and second boards in a direction intersecting the first, with specific terminals and power supply terminals arranged to optimize space usage and connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single T-shaped flexible wiring board is used to connect electrode terminals, then the connectivity is achieved, but the arrangement efficiency on laminate sheets decreases and yield is reduced
Solution Approach 1:
The patent divides the single T-shaped flexible wiring board into three separate flexible wiring boards (first, second, and third boards). The first and second boards extend in the first direction from respective edges of the light control sheet, while the third board extends in the second direction connecting to both first and second boards. This segmentation allows more efficient arrangement on laminate sheets, improving production yield while maintaining the same electrical connectivity function.
2Adaptability or versatility
If the light control sheet size increases, then the functionality is enhanced, but the ratio of flexible wiring board area to total laminate sheet area decreases
Solution Approach 1:
By segmenting the wiring board into three separate boards arranged in a specific configuration, the patent enables the system to adapt to larger light control sheet sizes while maintaining efficient space utilization on laminate sheets. The segmented structure allows flexible arrangement that scales with the light control sheet dimensions without proportionally increasing the wiring board area.
Solution Approach 2:
The patent utilizes two-dimensional arrangement of the three flexible wiring boards on the laminate sheet surface, with the third board extending in a direction perpendicular to the first and second boards. This dimensional arrangement optimizes space utilization and allows the system to accommodate larger light control sheets while maintaining production efficiency.
Data Source
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AI summary
A flexible wiring board unit (12) includes: a first flexible wiring board (12A) extending in a first direction (D1); a second flexible wiring board (12B) extending in the first direction; and a third flexible wiring board (12C) extending in a second direction (D2) and configured to be connected to the first flexible wiring board and the second flexible wiring board, the second direction intersecting the first direction.