Light Emitting Device With Irregular Atomic Bonding
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Solution Overview
Problem
Conventional light emitting devices face challenges in achieving high light extraction efficiency due to light attenuation caused by repeated reflections and absorption at electrodes, which reduces the overall light output.
Innovation Solution
A light emitting device is designed with a light transmissive member and a semiconductor stacked layer portion, where the light transmissive member has regions with irregular atomic arrangements directly bonded to the light emitting element, effectively increasing the thickness and reducing light absorption at the electrodes, thereby enhancing light extraction efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional structures with electrodes and substrate are used for light emitting devices, then the device can be manufactured with standard processes, but light attenuation occurs due to repeated reflections and absorption at the electrodes
Solution Approach 1:
The patent extracts the light-emitting function from the conventional electrode-substrate structure by using a semiconductor stacked layer portion that can emit light directly without requiring traditional metal electrodes for light extraction. This eliminates the harmful light absorption and reflection at electrode interfaces, resolving the technical contradiction between reducing light attenuation and maintaining device functionality.
Solution Approach 2:
The patent employs composite material structures including a semiconductor stacked layer portion with multiple layers having different refractive indices, combined with a light transmissive member. This composite structure enables efficient light extraction while avoiding the light absorption problems of conventional electrode-based designs, thereby reducing light attenuation without excessive structural complexity.
2Illumination intensity
If light is extracted through repeated reflections between upper and lower surfaces, then some light can be extracted to outside, but more reflections cause more light absorption by electrodes resulting in attenuation
Solution Approach 1:
The patent introduces a light transmissive member as an intermediary between the semiconductor stacked layer portion and the external environment. This mediator enables light to exit the device without requiring multiple reflections at electrode interfaces, thus achieving high light extraction efficiency while avoiding the energy loss from repeated reflections and electrode absorption.
Solution Approach 2:
The patent changes the optical parameters of the device by using materials with specific refractive indices and creating an irregular atomic arrangement at interfaces. This modifies the light propagation and extraction characteristics, enabling efficient light emission without the need for repeated reflections that cause energy loss at conventional electrode structures.
3Loss of energy
If a light transmissive member is added to reduce light attenuation, then light extraction efficiency improves, but the device structure becomes more complex
Solution Approach 1:
The patent merges the light transmissive member with the semiconductor stacked layer portion through direct bonding at interfaces with irregular atomic arrangements. This integration reduces the number of separate components and simplifies the overall device structure while still achieving the benefit of reduced light attenuation and improved light extraction efficiency.
Solution Approach 2:
The patent performs preliminary actions by creating irregular atomic arrangements at the bonding interfaces before final assembly. This pre-prepared interface structure facilitates direct bonding between the semiconductor stacked layer portion and the light transmissive member, simplifying the manufacturing process and reducing the complexity of assembling multiple components.
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 solution significantly reduces light attenuation and improves light extraction efficiency by minimizing reflections and absorption at the electrodes, resulting in a more effective light emitting device.
Implementation Method 1
the first region has an irregular atomic arrangement compared with the second region, the third region has an irregular atomic arrangement compared with the fourth region, and the first region and the third region are directly bonded
Data Source
AI summary
Provided is a light emitting device capable of reducing light attenuation within the element and having high light extraction efficiency, and a method of manufacturing the light emitting device. The light emitting device has a light emitting element having a light transmissive member and semiconductor stacked layer portion, electrodes disposed on the semiconductor stacked layer portion in this order. The light emitting element has a first region and a second region from the light transmissive member side. The light transmissive member has a third region and a fourth region from the light emitting element side. The first region has an irregular atomic arrangement compared with the second region. The third region has an irregular atomic arrangement compared with the fourth region. The first region and the third region are directly bonded.