Semiconductor Light-Emitting Module With Phase Modulation Layer
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Solution Overview
Problem
The existing semiconductor light-emitting elements have limited application ranges, and there is a need for a module that can expand these applications.
Innovation Solution
A semiconductor light-emitting module comprising multiple semiconductor light-emitting elements with a support substrate and drive electrodes, where the elements have a phase modulation layer with modified refractive index regions arranged to produce specific beam projection patterns, allowing for individual control of each element's operation to achieve diverse applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single semiconductor light-emitting element is used, then the device structure is simple, but the application range is limited
Solution Approach 1:
The invention divides the light-emitting system into multiple independent semiconductor light-emitting elements, each capable of emitting light in specific directions. By arraying these segmented elements on a support substrate, the system achieves both structural organization and functional versatility, resolving the contradiction between simplicity and adaptability.
Solution Approach 2:
The semiconductor light-emitting elements are designed with universal functionality to emit laser beams in various directions through their phase modulation layers. This multi-functional capability allows a single type of element to serve multiple application purposes (scanning, display, processing), thereby expanding the application range without proportionally increasing device complexity.
2Adaptability or versatility
If multiple semiconductor light-emitting elements are arrayed to expand applications, then the application range is expanded, but the control complexity increases
Solution Approach 1:
The invention introduces a drive circuit as an intermediary component that manages the control of multiple semiconductor light-emitting elements. This intermediary layer simplifies the control interface by handling the coordination and timing of individual elements, making the overall system easier to operate despite having multiple components.
Solution Approach 2:
The system utilizes periodic action through sequential lighting of the arrayed semiconductor light-emitting elements. By controlling elements to light up in sequence rather than simultaneously, the system achieves scanning and display functions while maintaining manageable control complexity through time-division multiplexing.
3Manufacturing precision
If the phase modulation layer uses modified refractive index regions to control beam patterns, then the beam projection precision is improved, but the manufacturing complexity increases
Solution Approach 1:
The invention achieves precise beam projection by modifying the refractive index parameter in specific regions of the phase modulation layer. By changing this optical parameter locally rather than altering the overall structure, the system attains high beam projection precision while avoiding excessive manufacturing complexity.
Solution Approach 2:
The phase modulation layer incorporates modified refractive index regions with local quality variations. These localized modifications allow precise control of light phase and direction in specific areas without requiring changes to the entire device structure, thereby achieving high precision with manageable manufacturing complexity.
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 module enables a broader range of applications beyond traditional uses by precisely controlling light output, including display devices, STED microscopes, and laser processing, through the adjustment of beam projection patterns and wavelengths.
Implementation Method 1
a phase modulation layer optically coupled to the active layer. The phase modulation layer has a base layer and a plurality of modified refractive index regions arranged in the base layer
Implementation Method 2
The phase modulation layer has a base layer and a plurality of modified refractive index regions arranged in the base layer
Implementation Method 3
a semiconductor light-emitting element includes an active layer and a phase modulation layer optically coupled to the active layer
Data Source
AI summary
A semiconductor light-emitting module according to the present embodiment includes a plurality of semiconductor light-emitting elements each outputting light of a desired beam projection pattern; and a support substrate holding the plurality of semiconductor light-emitting elements. Each of the plurality of semiconductor light-emitting elements includes a phase modulation layer configured to form a target beam projection pattern in a target beam projection region. The plurality of semiconductor light-emitting elements include first and second semiconductor light-emitting elements that are different in terms of at least any of a beam projection direction, the target beam projection pattern, and a light emission wavelength.