Color Conversion Layer Layout for Compact LED Display Electrodes
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Solution Overview
Problem
Current light emitting diode (LED) technologies face challenges in enhancing light output efficiency and reducing the space required for electrodes in display devices, leading to suboptimal display quality.
Innovation Solution
A light emitting device is designed with a substrate, a light emitting element, a color conversion layer, and electrodes, where the color conversion layer is positioned on the substrate to convert light emitted by the light emitting element into specific colors, and contact electrodes are used to electrically couple the electrodes with the light emitting element, optimizing the arrangement for improved light output efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the color conversion layer is positioned close to the light emitting element to improve light output efficiency, then light loss is minimized, but the arrangement complexity of electrodes and contact electrodes increases
Solution Approach 1:
The patent positions the color conversion layer in a specific spatial relationship with the light emitting element and electrodes, utilizing vertical layering and horizontal positioning in multiple dimensions. The color conversion layer is arranged to overlap with contact electrodes in plan view while being spaced from the light emitting element, creating a three-dimensional configuration that optimizes both light efficiency and electrode arrangement.
Solution Approach 2:
The patent applies different spatial arrangements to different components: the color conversion layer is spaced from the light emitting element but positioned to overlap with specific contact electrodes (first or second contact electrode) in plan view. This localized positioning allows selective optimization of light conversion efficiency at specific regions while maintaining manageable electrode complexity.
2Loss of energy
If the color conversion layer overlaps with contact electrodes to improve light output efficiency, then light conversion is optimized, but the fabrication precision requirements increase
Solution Approach 1:
The patent establishes predetermined spatial relationships between the color conversion layer and contact electrodes during the fabrication process. The color conversion layer is positioned to overlap with specific contact electrodes in plan view before final assembly, allowing for pre-planned alignment that simplifies the overall fabrication process and reduces precision requirements during final assembly.
3Area of stationary object
If electrode space is reduced to improve device compactness, then device size is minimized, but the electrical coupling reliability may be compromised
Solution Approach 1:
The patent implements a nested arrangement where the color conversion layer is positioned to overlap with contact electrodes in plan view, creating a compact configuration. The color conversion layer is located on the substrate and spaced from the light emitting element, while simultaneously overlapping with contact electrodes, effectively nesting multiple functional layers within a compact footprint without compromising electrical coupling.
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 enhances light output efficiency by minimizing light loss and simplifying the fabrication process, resulting in improved display quality and reduced electrode space requirements.
Implementation Method 1
a color conversion layer located on the substrate and configured to convert light emitted from the light emitting element into light having a specific color
Data Source
AI summary
A light emitting device may include: a substrate; a light emitting element located on the substrate and configured to emit light; a first electrode and a second electrode spaced from each other with the light emitting element interposed therebetween; a color conversion layer located on the substrate and configured to convert light emitted from the light emitting element into light having a specific color; a first contact electrode configured to electrically couple the first electrode with a first end of the light emitting element; and a second contact electrode configured to electrically couple the second electrode with a second end of the light emitting element. In a plan view, the color conversion layer may be spaced from the light emitting element and overlaps with at least one of the first and the second contact electrodes.