Fig. 3: Bending and wrinkling characteristics of the textile-OLEDs.
From: Multi-directionally wrinkle-able textile OLEDs for clothing-type displays
a Repetitive bending test of the textile-OLEDs in the tensile and compressive directions, the number of bendings: 1000 (reference: OLED fabricated on the glass substrate). b The cell images of the textile-OLEDs after bending. c Strain analyses of each layer within the bent textile platform using FEM mechanical simulation. d Repetitive wrinkling test of the textile-OLEDs, the initial luminance: 1000 nit (inset: schematic diagram of how the wrinkling test was conducted). e The cell images of the textile-OLEDs after wrinkling. f–i Strain analyses of the wrinkled textile-OLEDs using DIC, the relative cell area of 75.1% in the top view and the arbitrary view, the relative cell area of 53.7% in the top view and the arbitrary view.
