Alan E Ferry

Title: **Innovative Advancements in Printed Circuit Board Technology by Alan E. Ferry**

Introduction

Alan E. Ferry, an esteemed inventor from Manchester, NH, has made significant contributions to the realm of printed circuit board technology with his innovative methodologies. His notable patent presents a transformative approach to fabricating fine patterns, crucial for advancing electronic design and manufacturing.

Latest Patents

One of Alan E. Ferry's most prominent patents is titled "Method and apparatus for forming fine patterns on printed circuit board." This inventive concept reveals that fine patterns of metal or insulators can be effectively created on printed circuit boards using conventional lithographic steppers equipped with inverted projection lenses. These lenses serve as enlargement lenses which provide a depth of focus sufficient to accommodate various planarity deviations of the printed circuit boards.

The brilliance of this method lies in its cost-effectiveness, as it allows multiple mask levels to be incorporated on a single glass, reducing the necessity for a costly mask set. Moreover, the employment of smaller glass masks facilitates enhanced accuracy and dimensional stability in comparison to the conventional mylar masks. By utilizing an inverted 5× ZEISS lens on a GCA 6300A stepper, Ferry and his coworkers have successfully produced vias with diameters less than 25 µm, achieving precise metal patterns with overlay registration accuracy of under 25 µm. The field size they worked with surpassed 1 in², demonstrating the extensive reach of this innovation, complemented by a depth of focus greater than 50 µm.

Career Highlights

Alan E. Ferry's journey in innovation is deeply tied to his affiliation with Lucent Technologies Inc. His work has not only pushed the boundaries of what is possible in circuit board design but has also laid down a foundation for future technological advancements in the electronics field. The technical depth and creativity exhibited in his patent are a testament to his expertise and dedication to advancing the industry.

Collaborations

Ferry's achievements are complemented by the collaborative efforts of his esteemed coworkers, including Byung Joon Han and Maureen Yee Lau. Together, they have faced challenges in the world of printed circuit boards and have collectively contributed to this breakthrough solution, demonstrating the power of teamwork in fostering innovation.

Conclusion

Alan E. Ferry's inventive spirit and his patent for a method of forming fine patterns on printed circuit boards underline the importance of innovation in technology. His work exemplifies how creative solutions can lead to remarkable advancements, paving the way for more efficient and sophisticated electronic components. The contributions of inventors like Ferry not only enhance current technology but also inspire future generations of innovators to pursue advances within the field of electronics.