LED Light-Emitting Element With Segmented Electrodes for Heat Dissipation
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Solution Overview
Problem
Light-emitting diodes (LEDs) face issues with heat dissipation and thermal reliability due to non-uniform heat distribution at the interfacial region between electrodes and the light-emitting structure.
Innovation Solution
A light-emitting element design featuring a first semiconductor layer, an active layer, and a second semiconductor layer, with a first electrode and a second electrode connected to respective pads that facilitate heat dissipation through a network of contact parts and extension parts, ensuring efficient heat discharge and distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heat is generated in the interfacial region between electrodes and light-emitting structure, then light emission function is achieved, but heat dissipation efficiency deteriorates and thermal reliability decreases
Solution Approach 1:
The first electrode is divided into multiple contact parts (first contact part, second contact part, third contact part) that are spatially separated and arranged at different locations. This segmentation allows heat generated at each contact interface to be dissipated through separate pathways, preventing heat concentration and improving overall heat dissipation efficiency while maintaining electrical connection functionality.
Solution Approach 2:
The contact parts are arranged in a two-dimensional plane with specific spatial relationships (first contact part at center, second and third contact parts at opposite sides). This dimensional arrangement creates multiple heat dissipation pathways in different directions, enabling more effective thermal management compared to a single-point contact configuration.
2Stability of the object's composition
If conventional electrode structure is used, then device simplicity is maintained, but heat distribution uniformity deteriorates
Solution Approach 1:
The first electrode is segmented into multiple contact parts with specific spatial arrangements. This segmentation creates multiple heat dissipation pathways that distribute heat more uniformly across the device structure, avoiding localized heat accumulation while maintaining a relatively simple overall device architecture.
Solution Approach 2:
Different contact parts are positioned at specific locations (center and opposite sides) to create localized heat dissipation zones. This local quality approach ensures that heat generated at each interface is efficiently managed at that specific location, leading to uniform overall heat distribution without requiring complex global structural changes.
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 design enhances thermal reliability by allowing for quick and uniform heat dissipation from the interfacial region, improving the overall heat distribution and reliability of the light-emitting element.
Implementation Method 1
A light-emitting diode (LED) is one of light-emitting elements which emit light when current is supplied thereto
Implementation Method 2
heat generated in an interfacial region between a first electrode and a light-emitting structure may be easily discharged via a first pad and a second pad
Data Source
AI summary
An embodiment relates to a light-emitting element that easily dissipates heat through a pad and has a uniform heat distribution, the light-emitting element including a light-emitting structure that includes a first semiconductor layer, an active layer, and a second semiconductor layer; a first electrode that is formed on one side of the light-emitting structure and includes a plurality of contact parts electrically connected with the first semiconductor layer; a second electrode formed on the one side of the light-emitting structure and electrically connected with the second semiconductor layer; a first pad connected with the first electrode; and a second pad spaced apart from the first pad and connected with the second electrode, wherein the plurality of contact parts are arranged on the first and second pads.