Structured Layer on LED for Optical Crosstalk Reduction
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Solution Overview
Problem
Existing light-emitting components, such as LED matrices, face challenges in adapting emission characteristics and minimizing space requirements, leading to issues like optical crosstalk and inefficient light distribution, which affect resolution and contrast.
Innovation Solution
A structured layer with optical functionality is integrated onto the light-emitting element, allowing for adaptation of emission characteristics through collimation, divergence, or expansion of light, and can be configured in regions to minimize space and prevent optical crosstalk, using a thin film design that may include a Fresnel lens or light conversion layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a primary optical system is added to adapt emission characteristics, then the emission characteristic can be adapted to the application, but the space requirements increase and miniaturization is hindered
Solution Approach 1:
The patent merges the primary optical system directly with the light-emitting element by integrating a structured layer onto the LED chip. This integration combines the light generation function and the optical adaptation function into a single compact unit, eliminating the need for separate optical components and reducing overall space requirements while maintaining emission characteristic adaptability.
Solution Approach 2:
The structured layer is nested directly onto the light-emitting element, with the optical functionality embedded within the layer structure itself. This nesting approach allows the optical system to be contained within the footprint of the light-emitting element, minimizing additional space while enabling collimation, divergence, or expansion of emitted light.
2Productivity
If light-emitting elements are arranged closely to increase component density, then productivity increases, but optical crosstalk occurs reducing resolution and contrast
Solution Approach 1:
The patent extracts and eliminates the harmful optical crosstalk by designing the structured layer to precisely control light emission patterns. The structured layer collimates or directs light in specific patterns that prevent lateral light spread between adjacent elements, effectively removing the crosstalk interference that would otherwise degrade resolution and contrast in high-density arrangements.
Solution Approach 2:
The structured layer is configured with different local optical properties in different regions to control light emission patterns specifically for each light-emitting element. This local optimization ensures that each element's light is directed precisely where needed without interfering with adjacent elements, maintaining high resolution and contrast even at increased component densities.
3Reliability
If the structured layer is made thicker to improve optical functionality, then the optical performance improves, but the component size increases preventing miniaturization
Solution Approach 1:
The patent employs a thin-film structured layer with carefully engineered microstructures that achieve the desired optical performance (collimation, divergence, or expansion) in a minimal thickness. The thin film design uses precise structural features rather than thickness to control light patterns, enabling miniaturization while maintaining optical functionality.
Solution Approach 2:
The patent optimizes the structural parameters of the structured layer (such as feature size, spacing, and geometry) to achieve maximum optical performance in a minimal thickness. By changing these structural parameters rather than increasing thickness, the patent maintains reliable optical performance while enabling component miniaturization.
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 structured layer enhances luminous efficiency, enables miniaturization, and reduces scattered light, improving focusing and emission characteristics tailored to specific applications, while preventing optical crosstalk and allowing for diverse optical functionalities across different regions.
Implementation Method 1
The structured layer can be configured, in particular, to the effect that it collimates, diverges and/or expands light emitted by the light-emitting element
Implementation Method 2
The structured layer can be configured, in particular, to the effect that it collimates, diverges and/or expands light emitted by the light-emitting element
Implementation Method 3
The structured layer can form a Fresnel lens
Data Source
AI summary
A component is disclosed. In an embodiment the component includes a light-emitting element and a structured layer having an optical functionality, wherein the structured layer is arranged on the light-emitting element.