Nano-LED Electrode Assembly With Self-Alignment and Vertical Stacking
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Solution Overview
Problem
The challenge lies in maximizing light intensity per unit area of nano-scale LED elements while ensuring efficient light extraction and preventing electrical short circuits when connecting these elements to electrodes, as current methods struggle with precise placement and limited density due to their nanoscale size.
Innovation Solution
The proposed electrode assembly features a base substrate with first and second electrodes having lateral surfaces that face each other, allowing nano-scale LED elements to be interposed between them, with one end contacting each electrode, and utilizing a method that includes forming electrodes on the substrate, introducing nano-scale LED elements and a solvent between them, and applying electrical power for self-alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If nano-scale LED elements are manually disposed on a two-dimensional plane, then placement precision can be achieved, but the number of LED elements per unit area is limited and light intensity is insufficient
Solution Approach 1:
The patent transitions from two-dimensional planar arrangement to three-dimensional vertical stacking of nano-scale LED elements. Multiple layers of LEDs are arranged vertically between opposing electrodes, enabling significantly higher density and light intensity while overcoming the limitations of flat surface mounting.
Solution Approach 2:
The patent implements nested arrangement where multiple layers of nano-scale LED elements are stacked vertically within a compact three-dimensional space between electrodes. This nested structure allows numerous LED elements to occupy a small volume, dramatically increasing the number of elements per unit area.
2Reliability
If nano-scale LED elements are connected to electrodes, then electrical connection is established, but electrical short circuits occur due to precise placement difficulties
Solution Approach 1:
The patent employs self-alignment mechanisms where the nano-scale LED elements automatically position themselves relative to the electrodes through physical or chemical interactions during assembly. This self-service approach eliminates the need for high-precision manual placement, reducing placement errors and preventing electrical short circuits.
Solution Approach 2:
The patent introduces intermediary structures such as insulating layers or alignment features between the LED elements and electrodes. These intermediaries facilitate reliable electrical connection while preventing direct contact that could cause short circuits, compensating for placement imprecision.
3Illumination intensity
If light extraction efficiency is enhanced, then light intensity increases, but device complexity increases due to additional structures
Solution Approach 1:
The patent enhances light extraction by utilizing the vertical dimension through multi-layer stacking. Light can escape from multiple levels and directions, increasing overall extraction efficiency without requiring complex surface modifications on each individual LED element.
Solution Approach 2:
The electrode structures serve multiple functions: they provide electrical connection to the LED elements, act as structural support for the vertical stacking, and facilitate heat dissipation. This multi-functionality reduces the need for additional specialized components, keeping device complexity manageable.
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 increases the number of nano-scale LED elements per unit area, enhances light extraction efficiency, and prevents electrical short circuits, thereby maximizing light intensity and reducing defect rates in the electrode assembly.
Implementation Method 1
An LED is a semiconductor having a structure in which an n-type semiconductor crystal in which a plurality of carriers are electrons and a p-type semiconductor crystal in which a plurality of carriers are holes have a junction using a characteristic of a compound semiconductor, and is a semiconductor element that converts an electrical signal into light having a desired wavelength band and then emits the light.
Implementation Method 2
An LED is a semiconductor having a structure in which an n-type semiconductor crystal in which a plurality of carriers are electrons and a p-type semiconductor crystal in which a plurality of carriers are holes have a junction
Data Source
AI summary
The present invention relates to an electrode assembly comprising nano-scale-LED elements and a method for manufacturing the same and, more specifically, to an electrode assembly comprising nano-scale-LED elements and a method for manufacturing the same, in which the number of nano-scale-LED elements included in a unit area of the electrode assembly is increased, the light extraction efficiency of individual nano-scale-LED elements is increased so as to maximize light intensity per unit area, and at the same time, nano-scale-LED elements on a nanoscale are connected to an electrode without a fault such as an electrical short circuit.