Light-Emitting Unit Wall Structure for Sidewall Light Leakage
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Solution Overview
Problem
Existing light-emitting units face issues with light leakage and reduced color purity due to the combination of light-emitting diodes with light conversion and filter structures, affecting display quality.
Innovation Solution
Incorporating a color filter layer that covers the sidewalls of a light conversion layer, along with optional reflective, protective, and light-shielding layers to manage light emission and improve color purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light conversion layer is combined with light-emitting diodes, then light emission functionality is achieved, but light leakage occurs on the side and color purity is reduced
Solution Approach 1:
The patent segments the light management function by separating the light conversion layer from the light filtering function. The light conversion layer converts wavelength while the color filter layer selectively blocks unwanted wavelengths, with each layer performing its specific function independently to prevent light leakage and maintain color purity.
Solution Approach 2:
The patent introduces a color filter layer as an intermediary between the light conversion layer and the external environment. This intermediary selectively transmits desired wavelengths while blocking unwanted wavelengths, thereby preventing light leakage and maintaining color purity without affecting the light conversion process.
2Adaptability or versatility
If light conversion and filter structures are combined, then comprehensive light management is achieved, but display quality is affected due to light leakage
Solution Approach 1:
The patent divides the light management system into distinct functional modules: a light conversion layer for wavelength conversion and a color filter layer for selective wavelength transmission. This segmentation allows each module to be optimized independently, ensuring high display quality while maintaining comprehensive light management capability.
Solution Approach 2:
The patent applies different optical properties to different regions of the device. The color filter layer is strategically positioned and configured with specific optical characteristics to selectively manage light transmission in different areas, thereby preventing light leakage while preserving display quality in the viewing region.
3Object-affected harmful factors
If the color filter layer covers the sidewalls of the light conversion layer, then color purity is improved, but device complexity increases
Solution Approach 1:
The patent merges the color filter layer with the light conversion layer by positioning the color filter layer to cover the sidewalls of the light conversion layer. This integrated structure achieves color purity improvement through a unified design rather than separate components, thereby reducing overall device complexity while maintaining effective light management.
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
Enhances color purity and display quality by reducing unconverted light emission through sidewalls, while protecting the unit from environmental factors.
Implementation Method 1
a light conversion layer, the color filter layer covers a sidewall of the light conversion layer
Implementation Method 2
a color filter layer, the color filter layer covers a sidewall of the light conversion layer
Data Source
AI summary
A light-emitting unit is provided. The light-emitting unit includes a light-emitting element, a light conversion layer, and a wall. The light conversion layer is disposed on the light-emitting element. The wall covers a sidewall of the light conversion layer and extends to a portion of an upper surface of the light conversion layer.