LED Series Wiring Layout With Bypass Paths for Fault Tolerance
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Solution Overview
Problem
Existing light-emitting devices lack a clear and efficient method for connecting light-emitting elements in series while allowing power supply to functional elements even if one is defective, leading to potential failures and reduced performance.
Innovation Solution
A light-emitting device design that includes specific wiring configurations between light-emitting elements and protective elements, allowing current paths to bypass defective elements and maintain power supply to operational ones, using multiple wirings to ensure stable current flow and reduce load on individual connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light-emitting elements are connected in series with simple wiring, then the device structure is simple, but the reliability decreases when one element fails
Solution Approach 1:
The patent segments the series connection into multiple parallel paths by introducing intermediate connection points between light-emitting elements. Each element is connected through separate wiring segments (first wiring, second wiring, third wiring) that can be independently configured, allowing the system to maintain power supply to functional elements even when one element fails.
Solution Approach 2:
The patent introduces protective elements as intermediaries between light-emitting elements in the series connection. These protective elements are connected through additional wirings that act as mediators, providing alternative current paths and preventing catastrophic failure when a light-emitting element malfunctions.
2Reliability
If multiple wirings are added to provide bypass paths, then the reliability improves, but the device complexity increases
Solution Approach 1:
The patent applies local quality by providing bypass paths and protective elements only at specific locations where light-emitting elements are connected in series. Instead of making the entire system redundant, the additional wirings and protective elements are strategically placed at critical connection points, providing fault tolerance locally while minimizing overall system complexity.
3Reliability
If protective elements are added to each light-emitting element, then the reliability improves, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges the protective elements with the existing wiring structure by connecting them in parallel with the light-emitting elements through the same intermediate connection points. This integration approach allows protective elements to be added without requiring separate assembly processes or additional mounting structures, thereby improving reliability while minimizing manufacturing complexity.
Data Source
AI summary
A light-emitting device includes first and second light-emitting elements, first and second support members bonded to the first and second light-emitting elements, respectively, first and second protective elements, and a plurality of wirings including: a first wiring with one end being bonded to the first light-emitting element or the first support member; a second wiring with one end being bonded to the first light-emitting element or the first support member and the other end being bonded to the second light-emitting element or the second support member; a third wiring with one end being bonded to the first protective element or a support member equipped with the first protective element; and a fourth wiring with one end being bonded to the second protective element or a support member equipped with the second protective element.