Fine metal mask material and manufacturing process for high‐resolution active‐matrix organic light‐emitting diode displays
Chiwoo Kim, Ki-Soo Kim, Ohseob Kwon, Jaehoon Jung, Jong Kab Park, Doh Hoon Kim, Kiro Jung
Abstract
Abstract Manufacturing fine metal mask (FMM) is one of the biggest hurdles to realize the ultra‐high definition (UHD) grade AMOLED displays for smartphone and augmented reality (AR). We have developed the state‐of‐the‐art material and processing technology to achieve 800ppi or higher‐resolution FMMs. The Invar thinning and the thermal damage‐free laser ablation process realized us achieving the FMM for UHD displays.
Topics & Concepts
Materials scienceAMOLEDOLEDInvarProcess (computing)OptoelectronicsThinningManufacturing processActive matrixComputer scienceNanotechnologyComposite materialLayer (electronics)Operating systemThin-film transistorThermal expansionEcologyBiologyLaser Material Processing TechniquesSurface Roughness and Optical MeasurementsThin-Film Transistor Technologies