LED Device MIM Electrode ESD Protection
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Solution Overview
Problem
Light emitting devices face challenges in protecting against electrostatic discharge, which can lead to reliability issues and reduced product yield.
Innovation Solution
Incorporating a Metal-Insulator-Metal (MIM) structure on the electrodes of the light emitting device, eliminating the need for additional electrostatic protection circuits and simplifying the device structure, while providing protection against electrostatic discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional electrostatic protection circuits are added to protect against electrostatic discharge, then reliability is improved, but device complexity increases
Solution Approach 1:
The MIM structure merges the electrostatic protection function with the existing electrode structure. The metal-insulator-metal structure is integrated directly onto the electrodes, combining the protection circuit functionality with the electrical connection structure, thereby eliminating the need for separate protection circuits while maintaining reliability
Solution Approach 2:
The MIM structure serves multiple functions simultaneously: it provides electrostatic discharge protection while also maintaining electrical connectivity and potentially serving as part of the electrical contact structure. This multi-functionality reduces the need for additional components and simplifies the overall device architecture
2Reliability
If additional electrostatic protection circuits are added, then reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The MIM structure combines the protection function with the electrode fabrication process. By integrating the metal-insulator-metal structure during the existing manufacturing steps, the patent eliminates the need for separate protection circuit fabrication, thereby simplifying the manufacturing process while ensuring reliable electrostatic protection
3Reliability
If additional electrostatic protection circuits are added, then reliability is improved, but device structure becomes more complex
Solution Approach 1:
The MIM structure merges the protection function into the existing electrode structure, reducing the total number of discrete components. The metal-insulator-metal structure is integrated as part of the electrode assembly rather than being a separate component, thereby simplifying the device structure while maintaining protection functionality
Solution Approach 2:
The MIM structure serves as both the electrostatic protection mechanism and the electrical contact structure, eliminating the need for separate protection components. This multi-functional design reduces component count and simplifies the overall device architecture
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
The MIM structure enhances the reliability of the light emitting device by preventing damage from electrostatic discharge, thereby increasing product yield and simplifying the device design.
Implementation Method 1
an MIM (metal-insulator-metal) structure on at least one of the first and second electrodes
Data Source
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AI summary
A light emitting device includes a light emitting structure disposed on a first substrate and including at least a first conductive semiconductor layer, an active layer and a second conductive semiconductor layer; a first electrode on the first conductive semiconductor layer; a second electrode on the second conductive semiconductor layer; and an MIM (metal-insulator-metal) structure on at least one of the first and second electrodes.