Micro-LED Display Electrode Layout With Convex Insulating Structures
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Solution Overview
Problem
Current display devices face challenges in achieving excellent alignment and efficiency of light emitting elements, particularly in micro or nanoscale LEDs, which affects their luminance and durability, especially when integrated into display devices.
Innovation Solution
A display device design featuring a substrate with insulating structures having convex shapes that house light emitting elements, where the elements are aligned using electric fields and connected to electrodes, enhancing their alignment and efficiency through a method involving the formation of specific electrode and insulating layer configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If micro or nanoscale LEDs are used to increase light emitting element density, then the display device can achieve higher resolution and smaller size, but the alignment degree and efficiency of the light emitting elements deteriorate
Solution Approach 1:
The patent divides the substrate into multiple pixel regions, with each pixel region containing insulating structures that independently hold light emitting elements. This segmentation allows for precise local alignment control while maintaining high overall density, resolving the contradiction between increasing element quantity and maintaining alignment precision.
Solution Approach 2:
The patent introduces insulating structures as intermediary components between the substrate and light emitting elements. These insulating structures serve as positioning mediators that precisely locate the light emitting elements, thereby maintaining high alignment degree even when increasing the density of light emitting elements through the use of micro or nanoscale LEDs.
2Quantity of substance
If the size of light emitting elements is reduced to micro or nanoscale, then more elements can be integrated per unit area, but the durability and luminance characteristics worsen
Solution Approach 1:
The patent creates different local environments within pixel regions by forming insulating structures with specific geometries and material properties. Each light emitting element is locally supported and isolated by these insulating structures, providing optimized local conditions that enhance the durability and luminance of micro or nanoscale LEDs while maintaining high integration density.
Solution Approach 2:
The patent implements a nested structure where light emitting elements are positioned within spaces formed by insulating structures that protrude from the substrate. This nesting arrangement protects the fragile micro or nanoscale LEDs while maintaining their small size, thereby improving reliability without sacrificing the high density advantage.
3Manufacturing precision
If insulating structures with convex shapes are formed to house light emitting elements, then alignment degree improves, but device complexity increases
Solution Approach 1:
The patent segments the insulating structures into discrete units within each pixel region, with each structure independently housing light emitting elements. This segmentation simplifies the manufacturing process by allowing standardized formation of identical insulating structures across the substrate, reducing overall device complexity while maintaining high alignment precision through repeated modular units.
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 alignment degree of light emitting elements, leading to increased luminance and durability, and allows for a higher density of light emitting elements per unit area, thereby enhancing the display device's performance.
Implementation Method 1
the elements are aligned using electric fields
Data Source
AI summary
A display device includes a substrate and a display element layer disposed on the substrate and emitting light. The display element layer includes a first electrode electrically connected to a portion of a first light emitting element, a second electrode electrically connected to another portion of the first light emitting element, and at least one insulating structure disposed on the substrate and having a convex shape protruding from the substrate. The first light emitting element is disposed in a space of the at least one insulating structure. A method of manufacturing the display device is also disclosed.