Light Emitting Device Conductive Support Segmentation
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Solution Overview
Problem
Light emitting devices face issues with current concentration and electrical reliability, particularly in preventing current concentration and improving electrical reliability in light emitting device packages and units.
Innovation Solution
The light emitting device incorporates a structure with first and second conductive support members disposed on the same plane, insulated from each other, to prevent current concentration and enhance electrical reliability, along with a channel layer, insulating layers, and a reflective layer to optimize light extraction and heat radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional light emitting device structure is used, then the device can emit light, but current concentration occurs and electrical reliability deteriorates
Solution Approach 1:
The device divides the current path into multiple separate conductive support members (first and second conductive support members) instead of using a single current path. This segmentation distributes the current flow, preventing current concentration and improving electrical reliability while maintaining light emission functionality.
2Reliability
If multiple conductive support members are added to prevent current concentration, then electrical reliability improves, but device complexity increases
Solution Approach 1:
The first and second conductive support members are merged into a single integrated device structure, where they work together as unified current distribution pathways. This combining approach achieves current distribution benefits without requiring completely separate device structures, thereby limiting the increase in overall device complexity.
Solution Approach 2:
The conductive support members serve multiple functions: they provide mechanical support for the device structure, establish electrical connections, and distribute current to prevent concentration. This multi-functionality reduces the need for additional specialized components, thereby limiting complexity increase while achieving reliability improvement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively prevents current concentration and improves electrical reliability, allowing for efficient light emission and heat dissipation, thereby enhancing the performance and reliability of light emitting device packages and units.
Implementation Method 1
a light emitting structure comprising a first conductive semiconductor layer, an active layer, and a second conductive semiconductor layer... the active layer is disposed under the first conductive semiconductor layer
Implementation Method 2
a reflective layer... the reflective layer is disposed under the light emitting structure
Implementation Method 3
a first conductive support member disposed under the second electrode... a second conductive support member disposed under the first electrode... the first conductive support member is electrically connected to the second conductive semiconductor layer... the second conductive support member is electrically connected to the first conductive semiconductor layer
Data Source
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AI summary
A light emitting device according to the embodiment includes a light emitting structure including a first conductive semiconductor layer, an active layer under the first conductive semiconductor layer, and a second conductive semiconductor layer under the active layer; a first electrode electrically connected to the first conductive semiconductor layer; a second electrode electrically connected to the second conductive semiconductor layer; a channel layer around a lower portion of the light emitting structure; a first conductive support member electrically connected to the second electrode and disposed under the second electrode; a second conductive support member electrically insulated from the first conductive support member and disposed under the second electrode; and a first connection part electrically connected to the first electrode and the second conductive support member.