Trapezoidal Inorganic LED Alignment for Fluidic Self-Assembly

The patent introduces asymmetric guide holes in the guide member that correspond to the symmetric micro LED structure. The guide holes are designed with asymmetric shapes (e.g., rectangular, L-shaped, or T-shaped) that create unique alignment positions for the micro LEDs during fluidic self-assembly transfer. This asymmetric guide structure enables precise alignment and orientation of the micro LEDs on the substrate, solving the alignment precision problem while maintaining the smooth GaN layer surface for high light emitting efficiency.

The patent introduces a guide member as an intermediary component between the micro LEDs and the substrate during the fluidic self-assembly transfer process. The guide member contains guide holes that act as a mediator to guide and position the micro LEDs at precise locations on the substrate. This intermediary structure enables the simple fluidic self-assembly method to achieve high alignment precision by providing physical guidance through the asymmetric guide hole design.

The asymmetric guide holes are pre-formed in the guide member during the manufacturing process, before the actual micro LED transfer takes place. This preliminary preparation of the guide structure with predetermined asymmetric patterns allows for automated and precise alignment without requiring complex real-time adjustment mechanisms during the transfer process, thereby limiting the increase in overall device complexity.