Rutger C Wijburg

Title: The Innovations of Rutger C Wijburg

Introduction

Rutger C Wijburg is a notable inventor based in Hengelo, Netherlands. He has made significant contributions to the field of semiconductor memories, holding 2 patents that showcase his innovative approach to technology. His work primarily focuses on enhancing the efficiency and functionality of memory cells in integrated circuits.

Latest Patents

One of Wijburg's latest patents is for electrically-programmable semiconductor memories with buried injectors. This invention involves a memory cell that utilizes a field-effect transistor with a charge-storage region. The design allows for efficient and rapid injection of hot carriers into the charge-storage region through vertical punch-through of a depletion layer to a buried injector region. This method is achieved by applying programming voltages to both the control gate and the surface of the punch-through region. Additionally, non-injected carriers are effectively removed via the transistor drain during programming. The patent emphasizes the importance of a well-defined punch-through region, which can be achieved by having a higher-doped boundary region to restrict the lateral spread of the depletion layers, thus preventing parasitic connections. This innovation enables a compact cell array layout, facilitating closer spacing of the injector region to other regions of the memory cell.

Another significant patent by Wijburg involves an EPROM with a reduced number of contacts. This integrated circuit features memory cells arranged in rows and columns, where each cell has a transistor connected between two bit lines. The design allows neighboring cells in the same row to share a bit line contact, while the control gates of transistors in a row are connected to the same word line. This configuration contributes to a denser memory structure, enhancing the overall efficiency of the integrated circuit.

Career Highlights

Rutger C Wijburg is currently associated with U.S. Philips Corporation, where he continues to innovate in the field of semiconductor technology. His work has been instrumental in advancing the capabilities of memory devices, making them more efficient and compact.

Collaborations

Throughout his career, Wijburg has collaborated with notable colleagues such as Jan Middelhoek and Gerrit-Jan Hemink. These collaborations have further enriched his contributions to the field of semiconductor technology.

Conclusion

Rutger C Wijburg's innovative work in semiconductor memories has led to significant advancements in the efficiency and functionality of memory cells. His patents reflect a deep understanding of technology and a commitment to