Semiconductor Light-Emitting Element Phase Modulation Layer Electrode Interference
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Solution Overview
Problem
Conventional semiconductor light-emitting elements suffer from deterioration in optical image quality due to electrode interference, where light components are shielded by electrodes, leading to lost information and reduced image quality.
Innovation Solution
A semiconductor light-emitting element design where the phase modulation layer includes a basic layer and modified refractive index regions, with specific arrangements of these regions to ensure that only unobstructed light components contribute to the optical image, and the electrode is positioned to minimize interference, allowing light to pass through and maintain image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the phase modulation layer includes modified refractive index regions arranged according to a virtual square lattice, then the optical image quality is improved, but the electrode shields part of the light output, causing information loss and deteriorating image quality
Solution Approach 1:
The patent divides the phase modulation layer into two distinct regions: a first region where modified refractive index regions are arranged according to a virtual square lattice for high-quality optical image formation, and a second region (free region) without such arrangement where light passes through without being shielded by the electrode. This segmentation allows different parts of the phase modulation layer to serve different functions - one for image quality and another for preventing information loss.
Solution Approach 2:
The patent applies different structural characteristics to different regions of the phase modulation layer. The first region has a specific periodic structure with modified refractive index regions arranged on a virtual square lattice to optimize optical image quality, while the second region has a different structure that allows unobstructed light transmission. This local differentiation resolves the contradiction by optimizing each region for its specific function.
2Productivity
If the electrode is positioned to minimize interference with light output, then light output efficiency is enhanced, but the phase modulation layer structure becomes more complex
Solution Approach 1:
The phase modulation layer is segmented into a first region with modified refractive index regions arranged on a virtual square lattice and a second region without such arrangement. This segmentation creates a simpler overall structure compared to attempting to optimize the entire layer uniformly, while still achieving high light output efficiency through the second region's unobstructed light transmission path.
Solution Approach 2:
The patent extracts the function of optical image formation from the entire phase modulation layer and assigns it specifically to the first region, while the second region is dedicated to unobstructed light transmission. This extraction of functions simplifies the design by clearly defining the role of each region, avoiding the need for complex uniform optimization across the entire layer.
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 design effectively suppresses the deterioration of optical image quality by ensuring that only unobstructed light components contribute to the image, enhancing the light output efficiency and maintaining the desired optical image formation without electrode interference.
Implementation Method 1
The phase modulation layer includes a basic layer having a predetermined refractive index and a plurality of modified refractive index regions having refractive indexes different from the refractive index of the basic layer
Data Source
AI summary
The present embodiment relates to a semiconductor light-emitting element or the like including a structure for suppressing deterioration in the quality of an optical image caused by an electrode blocking a part of light outputted from a phase modulation layer. The semiconductor light-emitting element includes a phase modulation layer having a basic layer and a plurality of modified refractive index regions, and the phase modulation layer includes a first region at least partially overlapping the electrode along a lamination direction and a second region other than the first region. Among the plurality of modified refractive index regions, only one or more modified refractive index regions in the second region are disposed so as to contribute to formation of an optical image.