Display Electrode Pathway Layout for Light Emitter Alignment
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Solution Overview
Problem
Current display device manufacturing methods face inefficiencies in aligning and integrating light emitting elements, leading to increased process costs and potential misalignment issues.
Innovation Solution
A display device design featuring electrodes with body and branch electrodes, and sub-alignment areas with pathway areas and open areas, where light emitting elements are aligned using electric fields between adjacent electrodes, minimizing alignment in open areas to enhance process efficiency and reduce misalignment risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If light emitting elements are aligned in all areas including open areas, then alignment coverage is improved, but process efficiency deteriorates due to unnecessary alignment in non-emissive areas
Solution Approach 1:
The patent applies local quality by creating different alignment conditions in different areas: pathway areas have adjacent electrodes that generate electric fields for alignment, while open areas lack these electrodes and thus have no alignment function. This localized differentiation ensures light emitting elements are aligned only where needed (in pathway areas) and avoids unnecessary alignment processes in open areas, resolving the contradiction between alignment precision and process efficiency
2Manufacturing precision
If adjacent electrodes are placed close together to improve alignment, then alignment efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The patent segments the electrode structure into distinct components: body electrodes, branch electrodes, and connecting branch electrodes. This segmentation allows each component to have a specific function while maintaining overall simplicity. The adjacent electrodes are further segmented into pathway areas and open areas, creating a modular structure that improves alignment efficiency without excessive complexity
3Area of stationary object
If all areas are used for light emitting element placement, then device area utilization is improved, but misalignment risks increase in open areas
Solution Approach 1:
The patent extracts the alignment function from open areas by not placing adjacent electrodes there, effectively removing the potential for misalignment in those regions. Light emitting elements in open areas are positioned without electric field alignment, while pathway areas maintain full alignment functionality. This extraction approach prevents misalignment risks in open areas while preserving area utilization
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 efficiency of light emitting elements, reduces unnecessary process steps, and lowers manufacturing costs by minimizing the number of light emitting elements in non-emissive areas, thereby increasing overall process efficiency.
Implementation Method 1
light emitting elements are aligned using electric fields between adjacent electrodes
Data Source
AI summary
A display device includes sub-alignment areas including a pathway area defined by a first adjacent electrode and a second adjacent electrode spaced apart from each other in a first direction. A pathway area includes a first pathway area and a second pathway area spaced apart from each other along a second direction different from the first direction. The first adjacent electrode of the first pathway area and the first adjacent electrode of the second pathway area are spaced apart from each other with an open area therebetween. The second adjacent electrode of the first pathway area and the second adjacent electrode of the second pathway area are spaced apart from each other with the open area therebetween.