Intrinsically flexible displays: key materials and devices

Abstract

The continuous progress in flexible electronics is shaping human lives for more convenience and comfort. In this field, the interconnection and novel display applications are acknowledged as an important future direction. However, it is a huge scientific and technical challenge to develop intrinsically flexible displays due to the limited display panel by its size and shape. To address this conundrum, it is crucial to develop intrinsically flexible electrode materials, semiconductor materials, dielectric materials as well as the relevant flexible transistor drivers and display panels. In this review, we focus on the recent progress in this field from seven aspects: background and concept, intrinsically flexible electrode materials, intrinsically flexible organic semiconductors and dielectric materials for organic thin film transistors (OTFTs), intrinsically flexible organic emissive semiconductors for electroluminescent devices, and OTFT-driven electroluminescent devices for intrinsically flexible displays. Finally, some personal suggestions and prospects for the future development of intrinsically flexible displays were proposed.

Optimization of Alkyl Side Chain Length in Polyimide for Gate Dielectrics to Achieve High Mobility and Outstanding Operational Stability in Organic Transistors

“…In the past few decades, high-performance organic thin-film transistors (OTFTs) as element units in organic integrated circuits exhibit broad application prospects in foldable electronics, nonvolatile memory, biosensors, etc. − The gate dielectric layer, , as an important component of OTFTs, is the key to controlling the surface morphology, crystallinity, and grain size of organic semiconductors, as well as influencing the carrier transport efficiency of OTFTs. Traditional high process temperatures and brittleness make inorganic gate dielectric materials difficult to meet the need of use from rigid to flexible or organic electronic devices, such as oxides and nitrides .…”

Perylene Diimide Incorporated Polyurethane Polymer as Potential Colour Filter Material with Non‐fluorescent Property†

“…The comparisons with other polyurethane materials with excellent tensile properties were summarized in Table S4. High elastic deformation is one of the key requirements of intrinsically flexible displays devices, [ 35 ] so colour filters with high elongation at break will be more suitable for the production of intrinsically flexible display equipment with higher performance. Moreover, when the concentration of PDI is low, the elastic moduli decreased with the reduction of PDI dyes, which may contribute to the decrease of rigid structure content in the polymer system.…”

Strain-Modulated Magnetism in MoS2

“…Overall, an extensive and in-depth understanding of strain-mediated magnetism in MoS 2 is needed, which would provide new avenues for spintronics [ 189 , 190 , 191 , 192 , 193 , 194 , 195 , 196 , 197 ] and straintronics [ 198 , 199 , 200 , 201 , 202 ].…”