Pixel Electrode Pair Layout for Uniform Micro-LED Connection
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Solution Overview
Problem
Current techniques for manufacturing subminiature light emitting elements with inorganic crystal structures face challenges in efficiently arranging and connecting light emitting elements between electrode pairs, leading to reduced emission efficiency and increased failure rates in display devices.
Innovation Solution
A pixel design featuring electrode pairs with successively disposed sub-electrodes, where light emitting elements are electrically connected between the sub-electrodes, and a method of fabricating display devices by forming electrode pairs and aligning light emitting elements to ensure uniform connection and enhanced emission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light emitting elements are arranged between electrode pairs using conventional techniques, then the manufacturing process can be completed, but the emission efficiency is reduced and failure rates increase
Solution Approach 1:
The patent applies preliminary action by pre-forming electrode pairs with precisely positioned sub-electrodes before introducing light emitting elements. The electrode pairs are prepared in advance with first and second sub-electrodes spaced at specific distances, creating ready-to-connect structures that guide the subsequent alignment and connection process, thereby reducing failure rates while maintaining manufacturing efficiency
2Illumination intensity
If light emitting elements are uniformly arranged between electrode pairs, then emission efficiency and luminance are enhanced, but the manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the electrode structure into multiple electrode pairs, each containing first and second sub-electrodes. This segmentation allows for modular manufacturing where each electrode pair can be independently formed and then assembled with light emitting elements, achieving uniform arrangement for enhanced luminance while managing manufacturing complexity through standardized repeating units
Solution Approach 2:
The patent uses the electrode pairs as intermediary structures that facilitate the uniform arrangement of light emitting elements. The first and second sub-electrodes of each electrode pair serve as mediating components that guide the positioning and electrical connection of light emitting elements, enabling enhanced emission efficiency while providing a structured manufacturing approach
3Use of energy by moving object
If conventional connection methods are used between electrode pairs, then the manufacturing process is simpler, but the emission efficiency decreases
Solution Approach 1:
The patent applies merging by combining the first and second sub-electrodes of each electrode pair with light emitting elements to form integrated connection structures. The sub-electrodes are electrically connected to light emitting elements in a manner that merges the electrical connection function with the mechanical arrangement, achieving improved emission efficiency while maintaining manageable connection structure complexity
Data Source
AI summary
A pixel includes electrode pairs successively disposed in a first direction, and each including a first sub-electrode and a second sub-electrode successively disposed in the first direction; light emitting elements each electrically connected between the first sub-electrode and the second sub-electrode of any one the electrode pairs; a first connection electrode electrically connected between the first sub-electrode of a first electrode pair and a first power supply; and a second connection electrode electrically connected between the second sub-electrode of a last electrode pair and a second power supply. The second sub-electrode of a remaining electrode pair other than the last electrode pair is spaced apart from the first sub-electrode of a subsequent electrode pair with at least one first sub-electrode or at least one second sub-electrode disposed therebetween, and is electrically connected to the first sub-electrode of the subsequent electrode pair.