Metasurface Light-Emitting Assembly for Low-Reflection Integration
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Solution Overview
Problem
The integration of metasurfaces with light-emitting elements faces challenges such as strong reflection phenomena and energy loss due to their small size, affecting the accuracy and performance of the final device.
Innovation Solution
A method involving the simulation of a metasurface with phase compensation values, where meta-atom rods are arranged in a hexagonal lattice and bonded heterogeneously onto a light-emitting element, optimizing the supercell period length and meta-atom rod widths to reduce reflection and enhance transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a metasurface is directly integrated with a light-emitting element, then the size of the metasurface can be reduced to sub-wavelength scale, but the integration accuracy and performance deteriorate due to strong reflection at the heterogeneous interface
Solution Approach 1:
The patent introduces a transparent substrate as an intermediary layer between the light-emitting element and the metasurface. This substrate serves as a buffer that reduces the heterogeneous interface reflection, enabling accurate integration of the sub-wavelength metasurface while maintaining device performance. The substrate acts as a mediator that facilitates light transmission while reducing harmful reflections at the interface.
2Measurement precision
If the metasurface size is reduced to sub-wavelength scale, then the light beam control capability is improved, but energy loss increases due to strong reflection phenomenon
Solution Approach 1:
The transparent substrate functions as an intermediary that reduces reflection losses at the interface between the light-emitting element and the metasurface. By introducing this intermediate layer, the patent enables the small-sized metasurface to maintain its superior light beam control capability while significantly reducing energy loss from strong reflection phenomena.
3Adaptability or versatility
If heterogeneous bonding is used to integrate the metasurface with the light-emitting element, then the integration flexibility is improved, but the interface reflection increases
Solution Approach 1:
The transparent substrate serves as an intermediary layer that enables heterogeneous bonding between different materials (light-emitting element and metasurface) while simultaneously reducing the harmful interface reflection. This intermediary approach maintains the integration flexibility and adaptability of heterogeneous bonding while mitigating its primary disadvantage of increased reflection.
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 approach reduces energy loss and improves the efficiency of the integrated light-emitting device by optimizing the metasurface's phase compensation values and material selection, leading to enhanced light output and device performance.
Implementation Method 1
A metasurface is formed, wherein the metasurface has a plurality of unit cells, each of the unit cells has a meta-atom rod corresponding to a phase compensation value
Implementation Method 2
a light source with a light wavelength
Data Source
AI summary
A method of manufacturing a light-emitting device includes a number of operations. A light-emitting element is formed. A simulation of a metasurface is performed. The metasurface is formed based on the simulation of the metasurface. The metasurface is disposed on a light-emitting side of the light-emitting element. Performing the simulation of the metasurface includes establishing a metasurface model of the metasurface, in which the metasurface model has a plurality of unit cells, and phase compensation values of the unit cells are periodically distributed with a supercell period length in a deflection direction. The phase compensation values of the unit cell are adjusted and the light source is set to simulate the multiple transmittances of the metasurface model under different phase compensation values. The phase compensation values at a peak value of transmittance are selected as process parameters of the metasurface.