Micro-LED Electrode Alignment Layout to Prevent Display Short Circuits
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Solution Overview
Problem
Existing light emitting diodes (LEDs) face challenges in efficiently integrating micro or nano-scale bar type LEDs into display devices, particularly in maintaining alignment and preventing short circuits, which affect light emission efficiency and device performance.
Innovation Solution
A light emitting device design featuring a substrate with aligned electrodes and partition walls, where electrodes extend in alternating directions and are connected by alignment lines, with insulating layers to prevent short circuits and ensure efficient light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If micro or nano-scale bar type LEDs are integrated into display devices, then the display resolution and pixel density are improved, but the alignment precision and risk of short circuits worsen
Solution Approach 1:
The patent introduces alignment lines as intermediary structures that extend from electrodes across the light emitting element. These alignment lines serve as mediators that facilitate precise positioning and alignment of micro or nano-scale LEDs during fabrication, thereby improving alignment precision without compromising display resolution
Solution Approach 2:
The patent implements preliminary alignment structures (alignment lines) and electrode configurations before the actual LED fabrication and assembly. By pre-establishing these reference structures, the patent enables more accurate positioning of subsequent components, addressing the alignment precision challenge in advance
2Measurement precision
If micro or nano-scale bar type LEDs are integrated into display devices, then the display resolution is improved, but the risk of short circuits increases
Solution Approach 1:
The patent introduces insulating layers as intermediary structures between electrodes and light emitting elements. These insulating layers act as protective mediators that prevent direct electrical contact between adjacent components, thereby reducing short circuit risk while maintaining the high-resolution display structure
Solution Approach 2:
The patent extracts the risk of short circuits by separating conductive elements (electrodes) from light emitting elements through insulating layers. This extraction of the harmful electrical contact possibility allows the device to maintain high resolution without proportionally increased short circuit risk
3Ease of operation
If electrodes are extended in alternating directions for connection, then the alignment and electrical connection are improved, but the device complexity increases
Solution Approach 1:
The patent designs electrodes to serve multiple functions: they provide electrical connection to the light emitting element, act as alignment references through extending alignment lines, and maintain structural integrity. This multi-functionality reduces the need for separate components, thereby managing complexity while improving ease of operation
Data Source
AI summary
A light emitting device may include: a substrate including a plurality of unit light emitting regions; at least one first light emitting element having a first end portion and a second end portion in a first direction; at least one second light emitting element having a first end portion and a second end portion in a second direction intersecting the first direction; a first electrode connected to any one of the first and second end portions of each of the first and second light emitting elements and a second electrode connected to the other of the first and second end portions of each of the first and second light emitting elements; a first alignment line extending along the second direction on the substrate, the first alignment line being connected to the first electrode; and a second alignment line connected to the second electrode.