Display Electrode Recess Patterns for LED Alignment Reliability
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Solution Overview
Problem
Display devices face challenges in ensuring reliable alignment of light-emitting elements, which affects the display quality and efficiency of the alignment process.
Innovation Solution
The solution involves forming recessed patterns on the electrodes to guide and align light-emitting elements, ensuring uniform spacing and orientation, thereby improving the alignment reliability and display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If recessed patterns are formed on electrodes to guide light-emitting elements, then alignment reliability is improved, but device complexity increases
Solution Approach 1:
The recessed patterns are formed on the electrodes in advance before the light-emitting elements are placed. These pre-formed patterns serve as alignment guides that automatically direct the light-emitting elements to their correct positions, eliminating the need for complex real-time alignment mechanisms during the assembly process.
Solution Approach 2:
The recessed patterns act as an intermediary structure between the electrodes and the light-emitting elements. They provide a physical interface that facilitates automatic alignment through geometric constraints, allowing the light-emitting elements to be positioned accurately without requiring complex external alignment equipment or procedures.
2Manufacturing precision
If recessed patterns are formed on electrodes, then manufacturing precision is improved, but ease of manufacture deteriorates
Solution Approach 1:
The electrode surface is segmented into multiple recessed patterns rather than using a single flat surface. Each recessed pattern is a discrete geometric feature that can be independently formed, allowing for modular fabrication processes that improve precision while maintaining manufacturing feasibility through standardized patterning techniques.
Data Source
AI summary
A display device includes a first electrode disposed on a substrate; a second electrode disposed on the substrate, the second electrode being spaced apart from, and facing, the first electrode in a first direction; and a plurality of light-emitting elements extending in a length direction and having both ends disposed on the first electrode and second electrode, respectively, wherein the first electrode includes a plurality of first patterns which are recessed from a top surface of the first electrode and from a side surface of the first electrode that faces the second electrode, and the second electrode includes a plurality of second patterns which are recessed from a top surface of the second electrode and from a side surface of the second electrode that faces the first electrode.