Full-Color Light Emitting Structure for Optical Crosstalk Control
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Solution Overview
Problem
Existing light emitting devices suffer from color distortion due to light emission angles and false excitation of non-corresponding color processing parts, leading to inaccurate color development and display effects.
Innovation Solution
A full-color light emitting device is designed with a light emitting layer, refractive layer, spacer layer, and light processing layer, where the refractive layer has a higher refractive index than the spacer layer, and a baffle wall is used between adjacent light processing parts to prevent optical crosstalk, along with an isolation layer to absorb stray light, ensuring accurate color development and high resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light emitting diodes with certain light emission angle are used, then the light rays can cover the color processing part, but light rays larger than a certain angle will excite non-corresponding color processing parts causing color distortion
Solution Approach 1:
The device is divided into three independent light emitting units, each with its own color processing part. The light emitting layer includes first, second, and third light emitting parts that emit different wavelengths, with each having a corresponding color processing part directly above it. This segmentation prevents cross-excitation between adjacent units while maintaining comprehensive light coverage.
Solution Approach 2:
Each light emitting unit is designed with localized optical properties. The color processing part is positioned directly above the corresponding light emitting part, creating a localized optical path. This ensures that light rays from each emitting part primarily interact with its corresponding color processing part, reducing cross-contamination while maintaining effective illumination.
2Use of energy by moving object
If long-wavelength fluorescent material is used, then it can absorb light rays excited by short-wavelength fluorescent material, but this causes false excitation and color distortion
Solution Approach 1:
The light emitting layer is segmented into three distinct parts emitting different wavelengths (first, second, and third light emitting parts), each with its own dedicated color processing part. This spatial segmentation prevents long-wavelength materials from absorbing short-wavelength light, eliminating false excitation while maintaining efficient energy conversion in each unit.
Solution Approach 2:
A refractive layer with higher refractive index than the spacer layer is introduced as an intermediary between the light emitting layer and the color processing part. This refractive layer controls light propagation paths, ensuring that light rays from each emitting part are directed to its corresponding color processing part while preventing cross-excitation between adjacent units.
3Device complexity
If color processing part is disposed directly above light emitting diodes, then the structure is compact, but light rays may excite adjacent color processing parts causing color distortion
Solution Approach 1:
The device maintains a compact structure by disposing each color processing part directly above its corresponding light emitting part in three separate, segmented units. This segmentation approach preserves structural simplicity while preventing cross-excitation, as each unit operates independently with its own light emitting and color processing components.
Solution Approach 2:
The refractive layer serves as an intermediary between the light emitting layer and the color processing part, enabling direct disposal while controlling light paths. This intermediary layer ensures that light rays are properly directed to the corresponding color processing part without exciting adjacent parts, maintaining both structural compactness and color accuracy.
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 reduces the probability of mistaken excitation, enhances color accuracy, and improves display effects by totally reflecting large-angle light rays and preventing optical crosstalk, resulting in accurate color display and high resolution.
Implementation Method 1
A light refractive index of the refractive layer is greater than a light refractive index of the spacer layer
Implementation Method 2
A light refractive index of the refractive layer is greater than a light refractive index of the spacer layer
Implementation Method 3
a baffle wall is disposed between any two adjacent light processing parts in the first light processing part, the second light processing part and the third light processing part
Data Source
AI summary
The disclosure provides a full-color light emitting device and a display module. A light emitting layer, a refractive layer, a spacer layer and a light processing layer are included. The refractive layer is disposed above the light emitting layer, the spacer layer is disposed above the refractive layer, and the light processing layer is disposed above the spacer layer. The light emitting layer includes a first light emitting part, a second light emitting part and a third light emitting part. The light processing layer includes a first light processing part, a second light processing part, and a third light processing part, and a baffle wall is disposed between any two adjacent light processing parts in the first light processing part, the second light processing part and the third light processing part. A light refractive index of the refractive layer is greater than a light refractive index of the spacer layer.