Micro LED Assembly Groove Layout for Electrode Alignment
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Solution Overview
Problem
Existing display technologies using semiconductor LEDs face issues with arrangement errors during transfer or assembly, leading to defective wiring electrodes, which are exacerbated as LEDs shrink in size.
Innovation Solution
A display device design featuring a substrate with assembly grooves defined by barriers, where semiconductor LEDs are assembled with side electrodes that engage with protrusions, and a magnetic field is used to secure them, allowing for a wider wiring process margin and preventing short circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If semiconductor LEDs are reduced in size to increase pixel density, then display resolution is improved, but arrangement errors increase leading to more defective wiring electrodes
Solution Approach 1:
A magnetic layer is introduced as an intermediary component between the semiconductor LED and the substrate. This magnetic layer interacts with a magnetic field generated by a magnetic body to precisely position and secure the semiconductor LED during the assembly process, thereby reducing arrangement errors and preventing wiring electrode defects even when LEDs are reduced in size
Solution Approach 2:
The patent replaces traditional mechanical alignment and securing methods with a magnetic field-based positioning system. The magnetic field interacts with the magnetic layer to achieve precise positioning without mechanical contact, eliminating errors associated with mechanical transfer and assembly processes
2Manufacturing precision
If a magnetic field is used to secure semiconductor LEDs during assembly, then placement precision is improved, but device complexity increases due to additional magnetic components
Solution Approach 1:
The magnetic layer is applied locally only to specific regions of the semiconductor LED that require precise positioning, rather than throughout the entire device. This localized application provides the necessary magnetic interaction for precise placement while minimizing the overall complexity and material usage
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution minimizes the occurrence of defective wiring electrodes by ensuring precise placement and electrical connection of semiconductor LEDs, enhancing the manufacturing process and reducing defects.
Implementation Method 1
a magnetic body, and a magnetic field generated by the magnetic body
Data Source
AI summary
Provided in the present specification is a novel structured semiconductor light-emitting element capable of preventing an electrode forming failure due to an arrangement error occurring during assembly or transfer of semiconductor light-emitting elements on a substrate, when a display device is implemented using the semiconductor light-emitting elements, wherein at least one of a plurality of semiconductor light-emitting elements according to one embodiment of the present disclosure comprises: a first conductive type semiconductor layer; a second conductive type semiconductor layer located on the first conductive type semiconductor layer; an active layer arranged between the first conductive type semiconductor layer and the second conductive type semiconductor layer; a second conductive type electrode located on the second conductive type semiconductor layer; and a first conductive type electrode located on at least a one-side stepped portion of the first conductive type semiconductor layer exposed by etching a portion of the second conductive type semiconductor layer and the active layer.