Micro LED Unit Pixel ESD Protection on Transparent Substrates

An ESD protector is introduced as an intermediary component between the micro LED and the external environment. The protector includes a conductive line extending from a first electrode to a second electrode, where the first electrode is electrically connected to the micro LED and the second electrode is electrically connected to a reference potential. This intermediary structure provides a controlled path for electrostatic discharge, protecting the sensitive micro LED while maintaining its small size and high resolution capabilities.

The unit pixel is segmented into distinct functional components: the micro LED, the ESD protector with separate electrodes, and connection layers. This segmentation allows the ESD protector to be designed with extended conductive lines that protrude from the pixel electrode, providing accessible connection points for mounting operations. The conductive line structure enables easier electrical connection and mechanical handling without increasing the overall pixel area, thus maintaining high pixel density while improving ease of operation.

The conductive line structure serves multiple functions simultaneously: it provides ESD protection by creating a discharge path, acts as an electrical connection element between the micro LED and external circuitry, and functions as a mechanical feature for mounting and handling. The first electrode connects to the micro LED while the second electrode connects to reference potential, and the conductive line between them provides both electrical connectivity and ESD protection. This multi-functionality reduces the need for separate dedicated ESD protection components, thereby limiting the increase in device complexity while maintaining improved reliability.