Highly Reliable Flexible Device with a Charge Compensation Layer.

ABSTRACT: Flexible devices fabricated with a polyimide (PI) substrate are essential for foldable, rollable, and stretchable products and various applications. However, inherent technical challenges remain in mobile charge-induced device instabilities and image retention, significantly hindering future technologies. Here, we introduce a new barrier material, SiCOH, into the backplane of amorphous indium gallium zinc oxide (a-IGZO) thin-film transistors (TFTs) and applied it to production-level flexible panels. We found that the SiCOH layer effectively compensates for the surface charging induced by fluorine ions at the interface between the PI substrate and the barrier layer under bias stress, thereby preventing abnormal positive shifts in threshold voltage (V_th) and image disturban

SUBMITTER: Kim H 

PROVIDER: S-EPMC8932315 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature