Light Emitting Device Branch Wire Redundancy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional light emitting devices can fail to operate due to broken connection wires, disrupting the electrical connection between light emitting cells.
Innovation Solution
The light emitting device incorporates a substrate with multiple light emitting cells connected by a series of connection wires, including first, second, and third branch wires, which are spaced apart to ensure a current path even if some wires break, allowing the device to maintain operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single connection wire is used to connect light emitting cells, then the device structure is simple, but the reliability decreases when the wire breaks
Solution Approach 1:
The connection wire is divided into multiple branch wires (first branch wire, second branch wire, third branch wire) that connect the same light emitting cells in parallel. This segmentation allows current to flow through alternative paths if one branch breaks, thereby improving reliability without requiring a complete redesign of the connection architecture.
Solution Approach 2:
The patent implements redundant branch wires as a preventive measure against wire breakage. By providing multiple parallel connection paths before any failure occurs, the system cushions against potential reliability issues. The redundant wires remain idle during normal operation but become active if a break occurs, ensuring continuous operation.
2Reliability
If multiple branch wires are used to connect light emitting cells, then the reliability improves, but the device complexity increases
Solution Approach 1:
The connection structure is segmented into multiple independent branch wires (first, second, and third branch wires) that can be manufactured and connected separately. Each branch wire connects the same pair of light emitting cells, creating parallel pathways. This segmentation strategy improves reliability while keeping each individual connection simple.
Solution Approach 2:
The patent changes the parameter of connection multiplicity from single to multiple, specifically using three parallel branch wires. This parameter change increases reliability by providing redundant paths while the complexity increase is managed through systematic arrangement of the branches.
3Area of stationary object
If connection wires are placed close together, then the device area is reduced, but the risk of wire breakage increases
Solution Approach 1:
The connection path is segmented into multiple spatially separated branch wires rather than using a single wire or closely bundled wires. This segmentation distributes the mechanical stress and reduces the risk that a single breakage event will affect all connection paths, thereby improving wire integrity while managing device area.
Solution Approach 2:
The patent provides redundant branch wires as a cushion against wire breakage. By having multiple parallel paths with sufficient spacing, the system protects against mechanical failures. The spatial separation acts as a preventive measure, ensuring that breakage of one wire does not compromise the others.
Data Source
AI summary
A light emitting device according to an embodiment includes a substrate; first to Mth light emitting cells (where M is a positive integer of two or more) which are arranged on the substrate so as to be spaced apart from each other; and first to (M−1)th interconnection wires which electrically connect the first to Mth light emitting cells in series, wherein an mth light emitting cell (where 1≤m≤M) includes a first conductive type semiconductor layer, an active layer and a second conductive type semiconductor layer, which are sequentially arranged on the substrate, and wherein an nth interconnection wire (where 1≤n≤M−1) interconnects the first conductive type semiconductor of the nth light emitting cell with the second conductive type semiconductor of the (n+1)th light emitting cell, and has a plurality of first branch wires which are spaced apart from each other.