Micro-LED Electrode Layout for High-Definition Display Scaling
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Solution Overview
Problem
Existing micro-LED display devices face challenges in achieving high definition and large-scale displays due to the complex arrangement of micro-light emitting diodes and the need for efficient electrical connections.
Innovation Solution
The display device incorporates a unique arrangement of first and second mounting electrodes, with the second mounting electrode surrounding the first mounting electrodes, allowing for efficient electrical connection and mounting of micro-light emitting diodes, thereby improving the display's high definition and scalability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large number of chip-like micro-LED are mounted in the display area to achieve higher definition and larger scale, then the display definition and scale are improved, but the complexity of electrical connections and mounting arrangement increases
Solution Approach 1:
The second mounting electrode is designed to surround the first mounting electrode, creating a nested configuration where the first mounting electrode is positioned within the enclosed region of the second mounting electrode. This nesting arrangement allows multiple electrodes to share the same spatial region, reducing the overall number of discrete connection points needed and simplifying the electrical connection architecture while maintaining high definition display capabilities
Solution Approach 2:
The second mounting electrode serves multiple functions: it acts as a mounting electrode for micro-LED, provides electrical connection, and surrounds the first mounting electrode to establish electric potential relationships. This multi-functionality reduces the need for separate dedicated structures for each function, thereby reducing overall device complexity
2Stability of the object's composition
If the second mounting electrode surrounds the first mounting electrodes to improve electric potential uniformity, then the uniformity of electric potential is improved, but the manufacturing complexity increases
Solution Approach 1:
The mounting electrode structure is segmented into two distinct parts: the first mounting electrode and the second mounting electrode that surrounds it. This segmentation allows each electrode to be optimized for specific functions while maintaining manufacturability through modular design, where the surrounding configuration can be implemented as a separate layer or structure
3Productivity
If the first light emitting element is mounted across the first mounting electrode and the second mounting electrode, then the electrical connection efficiency is improved, but the mounting precision requirements increase
Solution Approach 1:
The nested configuration of the first mounting electrode within the second mounting electrode creates a well-defined spatial relationship and larger effective mounting area. This allows the light emitting element to be mounted across both electrodes with more tolerable precision requirements, as the surrounding structure provides inherent alignment guidance and the electrical connection path is optimized through this nested arrangement
Data Source
AI summary
According to one embodiment, a display device includes first wiring layers, a second wiring layer, a first insulating layer, first mounting electrodes, a second mounting electrode, a first light emitting element and a second light emitting element. The second mounting electrode is arranged to surround a first mounting electrode and an other first mounting electrode. The first light emitting element is mounted across the first mounting electrode and the second mounting electrode. The second light emitting element is mounted across the other first mounting electrode and the second mounting electrode. The second mounting electrode is electrically connected to the second wiring layer through a second opening of the first insulating layer, in a non-display area.