Mark D Morris

Title: Mark D. Morris: Innovator in Semiconductor Technology

Introduction

Mark D. Morris is a notable inventor based in Freehold, NJ (US), recognized for his contributions to semiconductor technology. He holds 2 patents that showcase his expertise in the field of electronics and materials science.

Latest Patents

One of his latest patents is a process for manufacturing a semiconductor BICMOS device. This innovative process involves creating bipolar and CMOS transistors on a p-type silicon substrate. The substrate features typical n+ buried wells and field oxide regions that isolate individual transistor devices. The process includes the creation of stacks of material over the gate elements of the CMOS devices and over the emitter elements of the bipolar transistors. These stacks consist of a silicon dioxide gate layer in contact with the epitaxial layer of the substrate, while the stacks over the emitter elements have a polycrystalline silicon layer in contact with the epitaxial layer. Additionally, walls of silicon dioxide are formed around the stacks to insulate the material within from the material deposited outside. The polycrystalline silicon layers are implanted with appropriate dopants, allowing them to serve as reservoirs of dopant to create the source and drain elements of the CMOS devices and the emitter elements of the bipolar devices during a heating step. A tungsten layer is then deposited over the polycrystalline layer to provide a conductive coupling to aluminum electrodes.

Career Highlights

Mark D. Morris has had a distinguished career, working with prominent companies such as American Telephone and Telegraph Company, AT&T Bell Laboratories, and American Telephone and Telegraph, Co. His experience in these organizations has significantly contributed to his development as an inventor in the semiconductor field.

Collaborations

Throughout his career, Mark has collaborated with notable individuals, including Tzu-Yin Chiu and Gen M. Chin. These collaborations have likely enriched his work and led to advancements in semiconductor technology.

Conclusion

Mark D. Morris is a significant figure in the field of semiconductor innovation, with a focus on BICMOS device manufacturing. His patents and career achievements reflect his dedication to advancing technology in this critical area.