Chung W Leung

Title: **Chung W Leung: A Pioneer in Semiconductor Innovations**

Introduction

Chung W Leung is a distinguished inventor from Allentown, PA, recognized for his significant contributions to the semiconductor industry. With six patents to his name, Leung has played a pivotal role in advancing technologies that enhance the efficiency and effectiveness of integrated circuits.

Latest Patents

Leung's latest innovations include a groundbreaking flash EEPROM fabrication process that employs a selective wet chemical etch. This method pertains to wet etching disposable spacers in silicon integrated circuits. In practice, it involves forming a pair of spacers over a polysilicon substrate, followed by creating a second pair of spacers made from doped silicon dioxide over the first pair. The innovative approach allows for precise etching of the second pair of spacers using a solution of NH4OH and H2O2, facilitating the definition of the underlying polysilicon layer.

Moreover, he has developed a method for semiconductor integrated circuit manufacturing that significantly reduces defect density in a semiconductor process sequence utilizing two local oxidations. This is achieved by maintaining an approximately 1:1 ratio of nitride to oxide thickness in the second local oxidation step, followed by an annealing process.

Career Highlights

Throughout his career, Chung W Leung has been associated with notable organizations such as AT&T Bell Laboratories and American Telephone and Telegraph Company (AT&T). His work at these institutions has been instrumental in pushing the boundaries of semiconductor technologies.

Collaborations

Leung has collaborated with several esteemed colleagues, including Min-Liang Chen and Richard W Gregor. These partnerships have contributed to the successful development of innovative solutions in the semiconductor field.

Conclusion

Chung W Leung stands out as a key figure in the world of semiconductor innovations. His six patents and collaborative efforts underscore his commitment to enhancing technology in this critical industry. Through his inventive spirit and technical acumen, Leung continues to influence the future of integrated circuit manufacturing.