Multiferroic Electrode Display Assembly for LED Alignment
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Solution Overview
Problem
Existing display devices face challenges in improving the alignment of light-emitting elements on electrodes and minimizing electrode oxidation, particularly in high-temperature environments.
Innovation Solution
The use of multiferroic electrodes, such as BiFeO3, hexa-ferrites, and TbMn2O5, which generate both electric and magnetic fields to align light-emitting elements, combined with a reflective layer and insulating layers to enhance alignment and prevent oxidation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional inorganic LEDs are used, then durability in high-temperature environment is improved, but alignment precision of light-emitting elements on electrodes deteriorates
Solution Approach 1:
The patent introduces a magnetic field as an intermediary tool to improve alignment precision during the manufacturing process. By applying a magnetic field during the deposition of light-emitting elements, the alignment precision is enhanced without affecting the inherent durability of inorganic LED materials. This mediator approach allows conventional durable materials to achieve precise alignment that was previously difficult to obtain.
2Ease of manufacture
If conventional electrode materials are used, then ease of manufacture is improved, but resistance to oxidation in high-temperature environment deteriorates
Solution Approach 1:
The patent employs composite electrode structures combining multiple materials to achieve both ease of manufacture and oxidation resistance. By creating composite electrodes with specific material combinations, the system maintains manufacturability while gaining enhanced resistance to oxidation in high-temperature environments, thus resolving the contradiction between ease of manufacture and oxidation resistance.
3Device complexity
If simple electrode structures are used, then device complexity is reduced, but alignment capability of light-emitting elements deteriorates
Solution Approach 1:
The patent utilizes parameter changes, specifically applying external magnetic fields, to enhance alignment capability without fundamentally redesigning the electrode structure. By changing the physical parameter (magnetic field application) during manufacturing, the alignment capability is improved while keeping the electrode structure relatively simple, thus resolving the contradiction between device complexity and alignment capability.
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 approach improves the alignment of light-emitting elements and prevents electrode oxidation, resulting in enhanced display performance and durability.
Implementation Method 1
the first electrodes and the second electrodes generate an electric field in response to an applied magnetic field
Implementation Method 2
the first electrodes and the second electrodes generate an electric field in response to an applied magnetic field
Implementation Method 3
The first electrodes and the second electrodes may generate a magnetic field in response to an applied electric field
Data Source
AI summary
Provided are a display device and a method for manufacturing the same. The display device includes banks extending in a first direction on a substrate and spaced apart from each other; a first electrode and a second electrode extending in the first direction and spaced apart from each other on different banks; an insulation layer disposed on the substrate and partially covering the first electrode and the second electrode; and light emitting elements disposed on the insulation layer and having ends disposed on the first electrode and the second electrode wherein the first electrode and the second electrode generate an electric field when a magnetic field is applied to the first electrode and the second electrode.