Stretchable LED Connecting Structure for Heat Dissipation
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Solution Overview
Problem
LED filaments face cost and efficiency issues despite their advantages over traditional incandescent light bulbs, such as low power consumption and long operational life.
Innovation Solution
A light-emitting device with a stretchable connecting portion is developed, comprising a first and second light-emitting structure electrically connected through a conductive structure with a stretchable connecting portion that can expand or deform, allowing for increased distance between light-emitting structures and enhanced heat dissipation, while maintaining electrical connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If LED filament uses rigid connecting structures, then manufacturing is simpler, but heat dissipation is poor and distance between light-emitting structures cannot be increased
Solution Approach 1:
The connecting structure transitions from a rigid static form to a dynamic stretchable form. The connecting portion can be elastically deformed to change the distance between light-emitting structures, enabling both heat dissipation through increased spacing and flexibility in device configuration without requiring complex rigid mechanisms.
Solution Approach 2:
The patent employs a stretchable connecting portion that functions as a flexible element between rigid light-emitting structures. This flexible connecting structure allows the device to accommodate thermal expansion and enables increased distance between components for improved heat dissipation while maintaining structural integrity.
2Temperature
If distance between light-emitting structures is increased for heat dissipation, then heat management improves, but connecting structure becomes more complex
Solution Approach 1:
The connecting portion is designed with elastic properties that allow it to dynamically adjust to increased distances between light-emitting structures. This dynamic flexibility enables the structure to accommodate larger spacing for heat dissipation without requiring complex rigid support mechanisms or additional components.
3Adaptability or versatility
If stretchable connecting portion is used for flexible integration, then adaptability improves, but manufacturing precision requirements increase
Solution Approach 1:
The connecting portion's elastic properties allow it to accommodate variations in distance and positioning between light-emitting structures. By utilizing materials with appropriate elastic moduli and designing the connecting geometry to provide compliance, the structure can tolerate manufacturing tolerances while maintaining functional integrity, thus reducing the stringency of manufacturing precision requirements.
Data Source
AI summary
A light-emitting device configured to electrically connect to an external circuit and having: a first light-emitting structure; a second light-emitting structure; a first conductive structure having a first connecting pad having a side surface and a top surface connected to the first light-emitting structure and an exposed bottom surface, and a first connecting portion extending away from the side surface without being directly connected to the second light-emitting structure; and a second conductive structure electrically connecting the first light-emitting structure and second light-emitting structure.