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March 14-16,2018
Shanghai New International Expo Centre

Lei Zhang PhD

Lei Zhang, PhD
Hong Kong Beida Jade Bird Display, Chief Technology Officer

Biography

张磊于1987年毕业于北京大学无线电电子学系,获理学学识学位,并分别于1996年和1999年在美国新墨西哥大学电机工程系获得理学硕士及哲学博士学位。

张磊具有20余年光电领域研发经验,曾任职于美国著名的科研机构及光电公司,如CHTM/UNM、Sandia National Laboratories、Emcore Corporation、Zia Laser Inc.、Nanocrystal Corporation、Skorpios Technologies Inc、以及映瑞光电有限公司,期间主攻光电子领域的科研及新产品开发,经验涵盖材料生长、器件设计、制程开发与优化、特性测试各个方面;其主持开发的产品包括GaN LED,各种半导体激光器(850nm VCSEL、1310nm量子点DFB和 Mode-locked Laser等)、12x3.3Gbps并行光纤收发器模块、三结高效光伏电池及聚光太阳能发电系统、以及硅光子器件等。

Lei Zhang received his B.S. degree in Electrical Engineering from Beijing University in 1987, M.S. degree in Electrical Engineering from University of New Mexico in 1996, and Ph.D degree in Electrical Engineering from the University of New Mexico in 1999.

He has more than twenty years R&D experience in the field of optoelectronics from both research institutions and industry companies, including CHTM/UNM, Sandia National Laboratories, Emcore Corporation, Zia Laser Inc, Nanocrystal Corporation, Skorpios Technologies Inc, and Enraytek Optoelectronics Company. During his career time, he has been R&D technical lead for a wide range of semiconductor optoelectronic devices and systems, including GaN LEDs, GaN nanowires, 850nm VCSELs, 12x3.3Gbps parallel optical transceivers, 1310nm Quantum-Dot DFBs and Mode-locked laser diodes, ultra-high efficiency triple-junction solar cells and concentrated solar power systems, and Si Photonics.

In July 2015, he co-founded and served as CTO of Hong Kong Beida Jade Bird Display Limited, a technology startup dedicated to the development and commercialization of Active Matrix micro-LED (AMLED) micro-displays. In December 2017, the company has successfully demonstrated monochromatic red, green, and blue AMLED micro-displays with ultra-high resolution and high brightness using wafer-scale monolithic hybrid integration technology developed by the company.

He has published more than 40 papers in the peer-reviewed scientific journals and conferences.

Abstract

Wafer-scale epi-transfer process has been developed for monolithic hybrid integration of Si-based IC and micro-LED arrays. Monochromatic red, green, and blue Active-Matrix micro-LED (AMmLED) micro-displays with a resolution of 5000+ PPI were demonstrated for the first time by JBD using this wafer-scale monolithic hybrid integration technology, which shows feasibility and advantages for low cost mass productions. The brightness of the demonstrated AMμLED micro-display (green) well exceeds 5x105cd/m2, representing an improvement of over 500-times compared to the existing self-emissive micro-displays. The ultra-high pixel resolution, high brightness and contrast ratio, low power consumption, and small footprint makes AMμLED micro-displays highly desirable for various wearable electronics and AR applications.