Exploring the Frontier of Visual Systems: IGZO-MEMS Display and SPAD ToF Sensors
Exploring the Frontier of Visual Systems: IGZO – MEMS Display and SPAD ToF Sensors
“A Personal Journey Through Display and Imaging R&D – From Concept to Device Innovation”
Join Dr. Richard (Tze-Ching) Fung for a virtual technical presentation titled “Exploring the Frontier of Visual Systems: IGZO–MEMS Display and SPAD ToF Sensors,” a personal journey through display and imaging R&D from concept to device innovation. The talk is divided into two parts: the first introduces thin-film transistors (TFTs), high-performance IGZO TFT technology, and its integration with ultra-low-power MEMS display systems. The second part provides an overview of optical ranging and direct Time-of-Flight (dToF) architecture, highlighting high-performance SPAD pixel design and system operation. This session offers insights into cutting-edge device technologies shaping the future of visual and sensing systems.
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Richard Fung
Exploring the Frontier of Visual Systems: IGZO – MEMS Display and SPAD ToF Sensors
About the Speaker – Dr. Richard Fung
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Abstract
Modern visual and sensing systems increasingly rely on innovations that merge advanced materials, device physics, and system-level optimization. This talk, “Exploring the Frontier of Visual Systems: IGZO–MEMS Display and SPAD ToF Sensors,” presents a technical journey through two impactful areas of R&D: thin-film transistor (TFT) display technologies and optical time-of-flight (ToF) imaging systems.
The first part of the presentation focuses on the fundamentals of thin-film transistors, with an emphasis on high-performance Indium Gallium Zinc Oxide (IGZO) TFTs. The discussion highlights key material and device properties that enable IGZO’s high mobility, stability, and low-leakage characteristics, and explores its integration with ultra-low-power MEMS display architectures. Attendees will gain insights into design considerations, process developments, and system-level challenges in merging IGZO TFT backplanes with MEMS-based display technologies aimed at emerging applications.
The second part of the talk transitions to optical distance measurement and direct Time-of-Flight (dToF) approaches. The session introduces the principles of optical ranging, compares dToF with indirect ToF (iToF) architectures, and examines the benefits of single-photon avalanche diode (SPAD) pixels for high-resolution depth sensing. The presentation concludes with an overview of advanced SPAD pixel design techniques and dToF system operation, illustrating how device innovations translate into real-world performance gains.
Through device-level insights and practical development experiences, this talk provides a comprehensive view of the semiconductor technologies shaping the next generation of displays, imaging systems, and 3D sensing applications.
Format:
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Talk: 75 minutes
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Q&A and Discussion: 10~15 minutes


