Barrier-Structured Display Layout for Better Light Conversion
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Solution Overview
Problem
Existing display devices face inefficiencies in how light emitted from light emitting elements is incident on light conversion layers, leading to suboptimal performance in light utilization and image quality.
Innovation Solution
The display device incorporates a substrate with a first and second electrode, a light emitting element between the electrodes, a barrier structure with specific surfaces, a light conversion layer on the barrier structure, and a passivation layer on the light conversion layer, with alternating spaces to enhance light incidence efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional flat structure is used for the light conversion layer, then the device structure is simple, but the light incidence efficiency is low
Solution Approach 1:
The barrier structure introduces a vertical dimension to the light conversion layer configuration, creating alternating first and second spaces above and within the barrier structure. This multi-level arrangement increases the light incidence efficiency by providing multiple interaction opportunities between light and the light conversion layer, while maintaining reasonable structural complexity through systematic patterning.
2Productivity
If the light conversion layer is placed directly on the substrate, then the manufacturing process is simple, but the light utilization is suboptimal
Solution Approach 1:
The light conversion layer is segmented into two distinct portions: a first light conversion layer in the first space above the barrier structure, and a second light conversion layer in the second space within the barrier structure. This segmentation allows each portion to optimize light conversion for its specific location, improving overall light utilization efficiency while using standard manufacturing processes for each layer.
3Productivity
If no barrier structure is used, then the device structure is simple, but the light incidence efficiency on the light conversion layer is low
Solution Approach 1:
The barrier structure acts as an intermediary element between the substrate and the light conversion layers. It creates the necessary spatial arrangement with alternating first and second spaces, enabling efficient light incidence without requiring complex additional components. The barrier structure mediates the interaction between light and the light conversion layers, improving efficiency while maintaining manufacturability.
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 improves the efficiency of light incidence on the light conversion layer, leading to enhanced light utilization and improved image quality in display devices.
Implementation Method 1
a light conversion layer on the barrier structure
Data Source
AI summary
A display device may include: a substrate; first and second electrode on the substrate; light emitting element between the first and second electrodes; a barrier structure on the substrate and including a first surface, a second surface, and a third surface; a light conversion layer on the barrier structure; and a passivation layer on the light conversion layer. A first space defined by the second and third surfaces may be between the substrate and the barrier structure. A second space defined by the first and second surfaces may be between the barrier structure and the passivation layer. The first and second spaces may be alternately located in the first direction. The light emitting element may be in the first space. The light conversion layer may be in the at least one second space.