Location History:
- Fuchu, JA (1977)
- Kokubunji, JP (1979)
Company Filing History:
Years Active: 1977-1979
Title: Kenichi Ohba: Innovator in Semiconductor Technology
Introduction
Kenichi Ohba is a prominent inventor based in Fuchu, Japan, known for his contributions to semiconductor technology. With a total of two patents to his name, Ohba has made significant advancements in the field, particularly in the design and functionality of MIS capacitance elements and gate input circuits for insulated gate field effect transistors.
Latest Patents
Ohba's latest patents include a MIS capacitance element that is formed in a semiconductor substrate of p- or n-conductivity type. This innovative element comprises an n- or p-type well region formed in one principal surface of the semiconductor substrate, along with a polycrystalline region formed on the surface of the well region through a gate insulator layer. A polar voltage is applied between the well region and the polycrystalline layer, ensuring that the well region is forward biased and no carrier channel region is formed in the surface of the well region. This MIS element is particularly suited for use in a complementary MIS IC and provides almost no voltage or field dependency of the capacitance. Additionally, he has developed a gate input circuit for insulated gate field effect transistors, utilizing a depletion type insulated gate field effect transistor. In this circuit, the drain electrode is connected to one terminal of a power source, while the source electrode is short-circuited with the gate electrode and connected to an input terminal through a resistor.
Career Highlights
Kenichi Ohba is associated with Hitachi, Ltd., a leading company in the technology sector. His work has contributed to the advancement of semiconductor devices, enhancing their efficiency and performance in various applications.
Collaborations
Ohba has collaborated with notable coworkers, including Kazutaka Narita and Shunji Shimada, who have also made significant contributions to the field of semiconductor technology.
Conclusion
Kenichi Ohba's innovative work in semiconductor technology has led to the development of advanced devices that play a crucial role in modern electronics. His patents reflect a deep understanding of the complexities of semiconductor design, making him a valuable contributor to the industry.
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