Display Functional Layer With Stacked Scattering And Conversion Patterns
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Solution Overview
Problem
Existing display devices face challenges in efficiently converting light emitted from light emitting elements, leading to suboptimal light conversion efficiency.
Innovation Solution
The display device incorporates a light functional layer with a bank having openings, and sequential layers of light scattering and sub-light conversion patterns within these openings, where the sub-light conversion patterns have thicker thicknesses than the light scattering patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single light conversion layer is used, then the device structure is simple, but light conversion efficiency is insufficient
Solution Approach 1:
The light functional layer is divided into multiple distinct layers: a light scattering pattern layer and multiple sub-light conversion patterns (first, second, and third sub-light conversion patterns). Each layer performs a specific function - the scattering layer diffuses light while the conversion layers transform light wavelengths sequentially, allowing for specialized optimization of each layer without compromising overall efficiency
Solution Approach 2:
The patent transitions from a single-layer light conversion approach to a multi-layer stacked configuration in the vertical dimension. By arranging scattering and conversion patterns in sequential layers along the light path, the system achieves enhanced light conversion efficiency through multiple interaction opportunities without significantly increasing lateral device complexity
2Loss of energy
If multiple light conversion layers are used, then light conversion efficiency is improved, but device complexity increases
Solution Approach 1:
The patent combines the light scattering function and light conversion function into a single integrated light functional layer. The scattering pattern and multiple sub-light conversion patterns are disposed within the same layer structure, eliminating the need for separate scattering layers and multiple independent conversion layers, thus reducing overall device complexity while maintaining multi-layer conversion benefits
Solution Approach 2:
The light functional layer serves multiple functions simultaneously: it scatters light through the scattering pattern, converts light wavelengths through multiple sub-light conversion patterns, and manages light distribution across different spectral ranges. This multi-functional integration reduces the number of separate components needed in the device structure
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 configuration enhances light conversion efficiency by effectively utilizing multiple layers to convert and scatter light, thereby improving the overall display performance.
Implementation Method 1
the first light scattering pattern may scatter first reference light emitted from the first light emitting element to provide a first sub-light conversion pattern
Implementation Method 2
the first sub-light conversion pattern may convert a color of first light that is a portion of the first reference light
Data Source
AI summary
An embodiment provides a display device including a light functional layer disposed on a substrate, the light functional layer includes a bank having openings, a first light scattering pattern, a first sub-light conversion pattern, a second light scattering pattern, and a second sub-light conversion pattern sequentially disposed in a first opening of the openings, and a thickness of each of the first sub-light conversion pattern and the second sub-light conversion pattern is thicker than a thickness of the first light scattering pattern and the second light scattering pattern.