Semiconductor Light-Emitting Structure Adhesive Layer
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Solution Overview
Problem
Conventional LED chips face a short service life due to poor adhesion between the insulating layer and the electrode, leading to water vapor invasion and electrode detachment, which reduces the longevity of the semiconductor light-emitting structure.
Innovation Solution
Incorporating an adhesive layer between the electrode and the insulating layer to enhance their bonding, preventing the insulating layer from falling off and protecting the electrode from water vapor invasion, thereby extending the service life of the semiconductor light-emitting structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an insulating layer is applied to cover the electrode, then electrical insulation is improved, but adhesion between the insulating layer and electrode deteriorates
Solution Approach 1:
A separate adhesive layer is introduced as an intermediary between the electrode and the insulating layer. This adhesive layer specifically addresses the adhesion problem by providing strong bonding to both the electrode and the insulating layer, while the insulating layer maintains its electrical insulation function without being compromised by adhesion requirements.
2Ease of manufacture
If the electrode is exposed to water vapor, then manufacturing simplicity is improved, but service life of the LED chip deteriorates
Solution Approach 1:
The adhesive layer is applied in advance during the manufacturing process to create a strong bonding interface between the electrode and insulating layer before the product is put into service. This preliminary protective action ensures that the electrode is pre-protected from water vapor invasion throughout its service life, extending the LED chip's durability without adding complex manufacturing steps.
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 adhesive layer effectively secures the insulating layer to the electrode, preventing water vapor invasion and electrode detachment, thus prolonging the service life of the semiconductor light-emitting structure.
Implementation Method 1
The adhesive layer is disposed between the electrode and the insulating layer, so as to bond the electrode and the insulating layer
Data Source
AI summary
A semiconductor light-emitting structure including a first conductive type semiconductor layer, a second conductive type semiconductor layer, a light-emitting layer, an electrode, an insulating layer, and an adhesive layer is provided. The light-emitting layer is disposed between the first conductive type semiconductor layer and the second conductive type semiconductor layer. The electrode is disposed on the first conductive type semiconductor layer. The insulating layer covers a part of the first conductive type semiconductor layer and the electrode. The adhesive layer is disposed between the electrode and the insulating layer so as to bond the electrode and the insulating layer.