Auxiliary Electrode Layout for Forward Light Emitting Element Alignment
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Solution Overview
Problem
Current display devices face inefficiencies in aligning light emitting elements due to the reversal of electric fields, which reduces the deflection alignment efficiency of these elements.
Innovation Solution
The implementation of a display device design that includes first and second alignment electrodes, along with auxiliary electrodes, where an alignment signal is applied to the alignment electrodes and a phase-different auxiliary signal is applied to the auxiliary electrodes, ensuring the electric field maintains a forward direction and enhances alignment efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If alignment signal is applied to alignment electrodes, then light emitting elements are aligned, but electric field reversal reduces deflection alignment efficiency
Solution Approach 1:
Auxiliary electrodes are introduced as intermediary elements between the alignment electrodes and light emitting elements. These auxiliary electrodes generate an electric field that acts as a mediator to guide and maintain the deflection of light emitting elements toward the alignment electrodes, preventing reverse rotation and improving overall alignment efficiency
Solution Approach 2:
The auxiliary electrodes create a localized electric field in specific regions between the alignment electrodes and light emitting elements. This local field enhancement ensures that the electric field consistently points in the forward direction in critical areas, maintaining alignment efficiency even when the overall field direction reverses
2Manufacturing precision
If auxiliary electrodes with phase-different auxiliary signal are added, then deflection alignment efficiency is improved, but device complexity increases
Solution Approach 1:
The electrode system is segmented into distinct functional components: alignment electrodes for primary positioning and auxiliary electrodes for field direction control. This segmentation allows each component to perform its specific function independently, with the auxiliary electrodes being simpler in structure despite adding a functional layer
Solution Approach 2:
The auxiliary electrodes serve multiple functions: they generate the auxiliary electric field, control the phase-different signal, prevent reverse rotation, and maintain forward deflection alignment. This multi-functionality justifies the added structural complexity by consolidating several alignment-related functions into a single electrode type
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 deflection alignment efficiency of light emitting elements by minimizing reverse rotation, resulting in more effective alignment and improved display performance.
Implementation Method 1
an alignment signal is configured to be applied to the first alignment electrode, and wherein a first auxiliary signal of a phase that is different from a phase of the alignment signal is configured to be applied to the first auxiliary electrode
Data Source
AI summary
A display device and a method of manufacturing the same are provided. The display device includes a first alignment electrode and a second alignment electrode spaced apart from each other, a light emitting element between the first alignment electrode and the second alignment electrode, a first auxiliary electrode at a first side of the light emitting element in a plan view, and separated from the first alignment electrode, and a second auxiliary electrode at a second side of the light emitting element in a plan view, and separated from the second alignment electrode, wherein an alignment signal is configured to be applied to the first alignment electrode, and wherein a first auxiliary signal of a phase that is different from a phase of the alignment signal is configured to be applied to the first auxiliary electrode.