Howard M Day

Title: Howard M Day - Innovator in Gallium Arsenide Technology

Introduction

Howard M Day is a notable inventor based in Hillcrest Heights, MD (US). He has made significant contributions to the field of semiconductor technology, particularly in the development of gallium arsenide (GaAs) devices. His innovative work has led to the creation of a patented method that enhances the thermal stability of these devices.

Latest Patents

Howard M Day holds a patent for "Multi-refractory films for gallium arsenide devices." This patent describes a method for constructing systems of refractory layers used in making GaAs semiconductor devices. The method involves using gold as the conducting electrode, ensuring that the devices remain thermally stable when subjected to temperatures up to about 600 degrees Celsius for approximately 24 hours. The patent outlines the formation of refractory layers using materials such as tantalum-platinum-tantalum, tungsten-platinum-tungsten, or titanium tungsten-platinum. These layers are crucial for developing both the Schottky barrier to GaAs and the diffusion barrier between gold and GaAs. The process includes depositing these materials at specific temperatures ranging from 50 degrees Celsius to 175 degrees Celsius on a GaAs wafer within a vacuum. After cooling to room temperature, the metalized wafer is removed from the vacuum for further processing.

Career Highlights

Howard M Day is associated with the company represented by the Secretary of the Navy in the United States. His work has been instrumental in advancing the technology used in semiconductor devices, particularly those utilizing gallium arsenide. His innovative approaches have contributed to the reliability and efficiency of these devices in various applications.

Collaborations

Howard has collaborated with Aristos Christou, working together to enhance the development of semiconductor technologies. Their partnership has fostered advancements in the field, leading to improved methodologies and applications.

Conclusion

Howard M Day's contributions to gallium arsenide technology through his patented methods have significantly impacted the semiconductor industry. His innovative work continues to influence the development of reliable and efficient electronic devices.