Pitch conversion by photoresist expansion transfer for micro LED

Abstract

AbstractMicro LED is an extremely small‐sized LED where each individual LED operates independently, providing high brightness, excellent contrast ratio, wide color gamut, and other outstanding visual characteristics. We have developed the transfer technology for micro LED chips using our proprietary PR (photoresist) expansion technique. This exclusive PR expansion technology, leveraging semiconductor photo processes, enables pitch conversion between micro LED chips and maintains a high level of accuracy in chip transfer at a sub‐micron scale. This innovative transfer technology allows for high‐density integration of micro LED chips, effectively reducing the cost per chip, and serving as a key driver for rapid growth in the micro LED market.