Vertically stacked skin-like active-matrix display with ultrahigh aperture ratio

作者：Juntong Li, Yanping Ni, Xiao‐Li Zhao, Bin Wang, Chuang Xue, Zetong Bi, Cong Zhang, Yongjun Dong, Yanhong Tong, Qingxin Tang, Yichun Liu · 发表于：Light Science & Applications · 年份：2024 · DOI：10.1038/s41377-024-01524-z · 被引用次数：21 · 研究领域：Advanced Sensor and Energy Harvesting Materials、Thin-Film Transistor Technologies、Organic Light-Emitting Diodes Research

Abstract Vertically stacked all-organic active-matrix organic light-emitting diodes are promising candidates for high-quality skin-like displays due to their high aperture ratio, extreme mechanical flexibility, and low-temperature processing ability. However, these displays suffer from process interferences when interconnecting functional layers made of all-organic materials. To overcome this challenge, we present an innovative integration strategy called “discrete preparation-multilayer lamination” based on microelectronic processes. In this strategy, each functional layer was prepared separately on different substrates to avoid chemical and physical damage caused by process interferences. A single interconnect layer was introduced between each vertically stacked functional layer to ensure mechanical compatibility and interconnection. Compared to the previously reported layer-by-layer preparation method, the proposed method eliminates the need for tedious protection via barrier and pixel-defining layer processing steps. Additionally, based on active-matrix display, this strategy allows multiple pixels to collectively display a pattern of “1” with an aperture ratio of 83%. Moreover, the average mobility of full-photolithographic organic thin-film transistors was 1.04 cm 2 V −1 s − 1 , ensuring stable and uniform displays. This strategy forms the basis for the construction of vertically stacked active-matrix displays, which should facilitate the commercial development of skin-...