About:
Yeoungjin Chang received the M.S. and Ph.D. degrees in Semiconductor Display Engineering from the Kyung Hee University under the supervision of Dr. Jin Jang of the Department of Physics. He has been with the Samsung Electronics and Samsung Display from 1996 to 2017. Since 2017, he is currently a Professor with the Department of Semiconductor Display, Gachon University, Seongnam, Korea. He is the Chair of the Department of Semiconductor Display at Gachon University and the Principal Investigator(PI) of the Gachon University–Samsung Electronics industry–academia research project. His current research interests include semiconductor device, high-performance thin film transistor, next-generation display device, and next-generation semiconductor sensors and sensing applications.
Education:
18.03 ~ 24.02 KyungHee University Department of Semiconductor Display Engineering Ph. D.
02.03 ~ 04.02 KyungHee University Department of Semiconductor Display Engineering Master
89.03 ~ 96.02 KwangWoon University Department of Electronic materials B.S.
Experience:
17.09 ~ Gachon University, Dept. of Semiconductor Display Department Chair
09.01 ~ 17.08 SAMSUNG DISPLAY Process Development Principal Engineer
96.02 ~ 08.12 SAMSUNG ELECTRONICS(SEMICONDUCTOR) Product Development Senior Engineer
Honors & Specialities:
Thesis
2026 Low-Latency Machine Vision Based on a NeuromorphicVision Sensor _ MDPI electronics
2026 High-Speed Image Restoration Based on a Dynamic Vision Sensor, MDPI sensors
2026 A Study on Ti thin film deposition by the cyclic pulse chemical vapor deposition method to improve the TiSEvent-Based Machine Vision for Edge AI Computing, MDPI sensorsx resistance of Via contact, MRS
2026 Event-Based Machine Vision for Edge AI Computing, MDPI sensors
2025 Inducing-ferroelectric-o-phase-in-spray-pyrolyzed-ZrO2-by La doing for high-performance InGaZnO ferroelectric thin-film transistors, Material Letters
2025 Highly Robust Spray‐Pyrolyzed Al2O3 Gate Insulator for Flexible a‐IGZO Thin‐Film Transistor for Low-Power Displays, PSS(Phys. Status Solid A)_Advanced Science News
2023 Low-Temperature Solution-Processed HfZrO Gate Insulator for High-Performance of Flexible LaZnO Thin-Film Transistor_nanomaterials, MDPI nanomaterials
2023 High-Performance Amorphous InGaSnO Thin-Film Transistor with ZrAlOx Gate Insulator by Spray Pyrolysis, MDPI electronics
2021 High Performance Dual Gate Blue Laser Annealed Poly-Si Thin-Film Transistor for High-Resolution Displays, IEEE
2020 Low‐Temperature Polysilicon Oxide Thin‐Film Transistors with Coplanar Structure Using Six Photomask Steps Demonstrating High Inverter Gain of 264 VV-1, Advanced Engineering Materials
2019 Sequential lateral crystallization of amorphous silicon on glass by blue laser annealing for high mobility thin-film transistors, Thin Solid Flims
2010 Active-matrix organic light-emitting diode using inverse-staggered poly-Si TFTs with a center-offset gated structure, Journal of the SID
2009 Reduction of Leakage Currents in Bottom-Gate N-Channel Metal-Induced Crystallization, Japanese Journal of Applied Physics
2008 A poly-Si AMOLED display with high uniformity, Solid-State Electronics
2004 Characterization of crystallographic properties of SMC poly Si using electron backscattered diffraction, Journal of Microscopy
2004 Ni-Mediated Crystallization of Amorphous Silicon with a SiO2 Nanocap, ECS(Electrochemical and Solid-State Letters)
2004 Electron backscattered diffraction study of poly-Si by Ni-mediated crystallization of amorphous silicon using a SiO2 nanocap, JVST_A(Journal of Vacuum Science & Technology A)
Academic activities
2026 _Low-Temperature Solution-Processed HfZrOx Gate Insulator for Hysteresis-Free Flexible LaZnO Thin-Film Transistors, The Korean Society of Semiconductor & Display Technology
2026 Low-Cost Spray-Pyrolyzed High-k Al₂O₃ Gate Insulator for High-Performance Flexible a-IGZO TFTs on Polyimide Substrates, The Korean Society of Semiconductor & Display Technology
2026 Low-Cost Spray-Pyrolyzed Highly Oriented Crystalline IGZO for High-Resolution Self-Aligned Coplanar TFT Backplanes, The Korean Society of Semiconductor & Display Technology
2026 Enhanced Orthorhombic Phase and Ferroelectric Memory Characteristics in La-Doped ZrO₂ Processed at 450 °C, The Korean Society of Semiconductor & Display Technology
2026 Cap. Electrode TiN Deposition using High-Speed Pulse Purged ALD System Optimization using Computational Fluid Dynamics Simulation, The Korean Society of Semiconductor & Display Technology
2026 Enhancement of Thermal Conductivity in Si3N4 Ceramics through Cu Ion Implantation, The Korean Society of Semiconductor & Display Technology
2026 Evaluation of Structural Changes and Thermal Dissipation Properties of Diamond-like Carbon (DLC) Thin Films Induced by Annealing, The Korean Society of Semiconductor & Display Technology
2026 Enhancement of Light Extraction and Resolution via TFE Thickness Reduction using Hydrophilic Inorganic Layers, The Korean Society of Semiconductor & Display Technology
2024 Highly Reliable, As-Grown Crystalline InGaZnO TFTs by Spray Pyrolysis for Low-Cost Manufacturing of High-Resolution AMOLED Display,SID Symposium Digest of Technical Papers
2024 A New Unit-cell Type Fine Metal Mask for IT & Gen8.x AMOLED Applications, SID Symposium Digest of Technical Papers
2024 A New External Compensation method for AMOLED Display, IDW(OLEDp2_AMDp3-04)
2022 _A New Evaluation System for Metal Oxide Compound Semiconductor Film, SID Symposium Digest of Technical Papers
2021 Hinges in Foldable and Rollarble Devices, Technical Review, iMiD
2011 Rapid Dehydrogenation Technology of a-Si using Xe Flash-Lamp Annealing, SID_Symposium_Digest_of_Technical_Papers
2011 Green Laser Sequential Lateral Solidification (G-SLS) Process for AMOLED Applications, SID Symposium Digest of Technical Papers
2010 30” AMOLED Based on Sequential Lateral Solidification Process, SID Symposium Digest of Technical Papers
2008 Thin and Light Integrated TSP with Enhanced Display Qualities, SID Symposium Digest of Technical Papers
2008 Sequential Lateral Solidification (SLS) Process for Large Area AMOLED, SID Symposium Digest of Technical Papers
2007 AMOLED based on Silicon-On-Glass (SiOG) Technology, SID Symposium Digest of Technical Papers
2006 World’s Largest (21.3 in.) UXGA Non-Laser LTPS AMLCD, SID Symposium Digest of Technical Papers
2003 Effect of a-Si thickness on Ni-mediated Crystallization, IDW
2003 Effect of SiO2 nano cap on Ni-mediated crystallization of amorphous silicon, IDW
2003 EBSD study of poly-Si with disk-like grains produced by silicide mediated crystallization, AMLCD
Patent
2022 ORGANIC LIGHT EMITTING DIODE DISPLAY
2022 LIGHT EMITTING DISPLAY DEVICE
2021 ORGANIC LIGHT EMITTING DIODE DISPLAY
2021 TRANSPARENT ORGANIC LIGHT EMITTING DISPLAY APPARATUS AND METHOD OF MANUFACTURING THE SAME
2021 Organic light-emitting display apparatus and manufacturing the same
2020 Organic light emitting display apparatus and manufacturing method of the same
2020 Organic light emitting display apparatus and manufacturing method thereof
2020 Backplane for display apparatus, and display apparatus comprising the backplane
2020 Organic light emitting display apparatus and manufacturing method thereof
2019 Organic light emitting display device comprising the same and manufacturing method of the same
2019 Organic light emitting display apparatus and manufacturing method thereof
2019 Organic light emitting display device and manufacturing method of the same
2019 Pixel and Organic Light Emitting Display Device Using the same
2018 Organic light emitting display
2018 Organic light emitting display apparatus and manufacturing method of the same
2018 Substrate comprising thin film transistors and organic light emitting display apparatus comprising the same
2017 Laser crystallization system and method of manufacturing display apparatus using the same
2017 Organic light emitting display apparatus and manufacturing method thereof
2017 Photo diode, manufacturing method thereof and photo sensor comprising the same
2017 Photosensor and manufacturing method thereof
2017 Organinclight emitting display device and manufacturing method for the same
2015 DISPLAY DEVICE AND DRIVING METHOD THEREOF
2011 Crystallization apparatus, crystallization method, method of manufacturing thin film transistor and method of manufacturing organic light emitting display apparatus
