Micro-LED Electrode Layout for Uniform Power Distribution
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Solution Overview
Problem
Conventional display devices face challenges in achieving high definition and large-scale displays due to limitations in mounting and connecting micro-LEDs, which affect the efficiency and uniformity of pixel arrangements and power supply distribution.
Innovation Solution
A micro-LED display device design featuring a specific arrangement of first and second mounting electrodes and light emitting elements, where the second mounting electrode surrounds the first mounting electrodes, allowing for efficient electrical connection and improved power supply distribution, reducing resistance and enhancing pixel definition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing 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 resolution and scale are improved, but the mounting complexity and connection difficulty increase
Solution Approach 1:
The patent divides the mounting electrode structure into multiple segments: first mounting electrodes for individual micro-LED connections and second mounting electrodes for power supply distribution. This segmentation allows independent optimization of each component, simplifying the overall mounting process while maintaining high display resolution
Solution Approach 2:
The patent introduces a two-dimensional electrode arrangement where second mounting electrodes are positioned in both the display area and non-display area, creating a distributed power supply network. This dimensional expansion reduces connection complexity by providing multiple access points for power distribution
2Ease of manufacture
If conventional mounting methods are used for micro-LEDs, then the manufacturing process is simpler, but the uniformity of pixel arrangements and power supply distribution deteriorates
Solution Approach 1:
The patent positions second mounting electrodes in the non-display area to create equipotential regions for power supply distribution. This ensures uniform electric potential across all micro-LED connections, improving pixel arrangement uniformity while maintaining manufacturing simplicity through standardized electrode patterns
Solution Approach 2:
The patent applies different electrode configurations to different regions: first mounting electrodes in the display area for precise micro-LED positioning and second mounting electrodes in the non-display area for uniform power distribution. This local differentiation achieves both manufacturing ease and arrangement uniformity
3Device complexity
If power supply lines are concentrated in one area, then the wiring is simpler, but the uniformity of electric potential across the display deteriorates
Solution Approach 1:
The patent segments the power supply network into multiple second mounting electrodes distributed across the non-display area. This segmentation maintains wiring simplicity through modular design while ensuring uniform electric potential delivery to all micro-LEDs through distributed connection points
Solution Approach 2:
The second mounting electrodes in the non-display area serve as intermediary power distribution nodes between the main power supply and individual micro-LEDs. These intermediaries reduce voltage drops and maintain electric potential uniformity across the display while keeping the overall wiring structure simple
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.