This study introduces an aluminum transparent heater manufactured with a perforated pattern by using inkjet printing process. The polymeric sacrificial layer was deposited in a periodic dot arrangement by inkjet printing and a aluminum thin film was deposited using a vacuum deposition process. By the ultrasonic punching to remove inkjet-printed sacrificial layer, the transparent electrode with perforated metal pattern was formed. From the multiphysics simulation, it is investigated that the narrow region of the perforated pattern is efficient to generate Joule heating. 

 We introduce a flexible metal grid transparent electrode fabricated using a lift-off process. This transparent electrode consisting of metal thin film with punched-like pattern by hole array was fabricated with 8 um separations. Moreover, there was no significant change in the resistance after 7000 bending cycles, indicating that the array conductor had superior stability. We also demonstrate transparent touch screen panels fabricated using the transparent electrode.

Using printed organic materials to fabricate organic light emitting diodes (OLEDs) is a low-cost process and one of the most innovative deposition technologies. However, the printing process leaves residual solvent in the deposited organic films. How that remaining solvent affects the performance of the OLEDs, and the fundamental mechanism of that effect, is still unclear. In this study, we investigated the effect of residual solvent in a jet printed phosphorescent emissive layer.

 We fabricated an organic thin film of poly(9-vinylcarbazole) : tris[2-(p-tolyl)pyridine]iridium(III) thin film as an emissive layer in an organic light emitting diode (OLED) using the high speed nozzle jet printing method. By nozzle jet printing, a thin film with a width of 1.5 cm and a thickness of 95 nm was fabricated in one scan of single nozzle head with 1000 mm/s.