LED Light-emitting Element Trench Texturing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current light-emitting diode (LED) technologies face challenges in enhancing light output directionality and efficiency, particularly in the design of their understructures and light-emitting structures, which can limit their forward light emission and overall performance.
Innovation Solution
A light-emitting element with a monolithic understructure featuring a first surface and a second surface, where a trench is formed on the first surface between light-emitting structure units, allowing for the creation of textured features that enhance light reflection and scattering, thereby improving forward light output. This design includes a textured structure below the light-emitting zone, which can be formed using various materials and processes such as masking, lithographing, and etching, and is filled with insulating or conductive materials to facilitate electrical bridging between units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a trench is formed on the first surface between light-emitting structure units, then forward light output is enhanced through improved reflection and scattering, but device complexity increases due to additional manufacturing steps
Solution Approach 1:
The first surface is segmented into multiple regions by forming trenches between light-emitting structure units. This segmentation creates distinct functional zones: textured regions for light reflection/scattering and flat regions for light emission, thereby enhancing forward light output through improved light management while organizing the structure into manageable segments
Solution Approach 2:
Different surface qualities are applied to different locations: the regions between light-emitting units are textured to enhance reflection and scattering, while the regions under light-emitting units remain flat to optimize emission. This local differentiation of surface properties optimizes both light extraction and forward emission without requiring complete structural redesign
2Productivity
If textured features are created on the first surface to enhance light reflection, then light emission efficiency improves, but manufacturing precision requirements increase
Solution Approach 1:
The textured features are formed on the first surface before the light-emitting structure units are assembled or before final device completion. This preliminary formation of textures allows for optimized light reflection and scattering properties to be established in advance, improving light emission efficiency while enabling subsequent manufacturing steps to focus on precise positioning rather than texture creation
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 effectively redirects and enhances forward light output, improving the efficiency and directionality of light emission, leading to increased performance and reduced material usage in the trench filling process.
Implementation Method 1
textured features that enhance light reflection and scattering
Implementation Method 2
textured features that enhance light reflection and scattering
Data Source
AI summary
A light-emitting element includes a monolithic understructure including a first surface and a second surface different from the first surface; a plurality of light-emitting structure units disposed on the second surface; and a trench formed on a portion of the first surface and between the plurality of light-emitting structure units, wherein a height of the portion of the first surface is greater than a height of the second surface measured from a bottom of the monolithic understructure, and the portion of the first surface is exposed by the trench.