Location History:
- Oizumi-machi, JP (2004)
- Gunma, JP (2007 - 2008)
Company Filing History:
Years Active: 2004-2008
Title: The Innovations of Shuhei Kawai: A Luminary in Driver and Charge Pump Circuits
Introduction
Shuhei Kawai, an accomplished inventor based in Gunma, Japan, has made significant contributions to the field of electronics with a focus on driver circuits and charge pump technologies. With a total of three patents to his name, Kawai's work showcases his commitment to enhancing the efficiency and effectiveness of electronic devices.
Latest Patents
Among his latest inventions is a groundbreaking driver circuit designed to drive light-emitting devices more efficiently. This innovation reduces the patterning area necessary for current driving while enhancing overall efficiency. The circuit utilizes a positive power supply voltage Vdd applied to the anode of a white LED, along with a voltage of -0.5 Vdd, generated from a dedicated circuit applied to the cathode through an N-channel type MOS transistor. This novel approach allows a voltage of 1.5 Vdd to be maintained between the anode and cathode while minimizing parasitic capacitance.
Additionally, Kawai's charge pump circuit presents a significant advancement by cutting off leakage paths through parasitic diodes found in charge transfer MOS transistors. This design involves N-channel type transistors connected in series, allowing the circuit to maintain efficiency by controlling the electric potentials at strategic points. These patents exemplify Kawai's ability to merge innovative design with practical applications to improve contemporary electronic systems.
Career Highlights
Shuhei Kawai has dedicated his career to advancing technology at Sanyo Electric Co., Ltd. His work has been pivotal in creating efficient electronic solutions that are not only innovative but also highly applicable to the evolving demands of modern technology. His expertise and creative approach have earned him recognition within the industry.
Collaborations
In his journey of innovation, Kawai has collaborated with notable colleagues such as Takao Myono and Takashige Ogata. These partnerships have fostered a collaborative environment that emphasizes the importance of teamwork in advancing technology and achieving groundbreaking inventions.
Conclusion
Shuhei Kawai's contributions to the fields of driver circuits and charge pump technologies stand as a testament to his inventive prowess and dedication to improving electronic systems. His patents, which emphasize efficiency and practical applications, continue to impact the industry. As a key member of the team at Sanyo Electric Co., Ltd., Kawai represents the innovative spirit that drives advancements in technology today.