This inventor holds 1 USPTO granted patent. Top assignee: Lam Research Corporation. Active years: 1998.
Company Filing History:
Years Active: 1998
Title: David Ru-Chen Liu: Innovator in Electrostatic Chuck Technology
Introduction
David Ru-Chen Liu is an accomplished inventor based in Saratoga, California, known for his significant contributions to the field of electrostatic chuck technology. With one patent to his name, Liu has made a lasting impact through his innovative designs that enhance wafer handling in semiconductor manufacturing.
Latest Patents
Liu's notable patent, titled "Negative Offset Bipolar Electrostatic Chucks," presents a sophisticated bipolar electrostatic chuck system designed for securely holding wafers during processing. This innovative system integrates a negative-offset power supply that generates both a positive potential level and a negative potential level. The unique feature of his design is that the negative potential level is negatively biased relative to a common reference voltage by a larger magnitude than the positively biased positive potential level. This allows for enhanced control and stability when the negative-offset power supply is engaged. The bipolar electrostatic chuck includes a positive pole, linked to the power supply, to maintain a positive potential level, and a negative pole that similarly ensures a designated negative potential level.
Career Highlights
David Ru-Chen Liu is employed at Lam Research Corporation, a leading provider of semiconductor manufacturing equipment. His work involves the development of advanced technologies that support the fabrication of microelectronic devices. Liu's expertise and innovative thinking have contributed significantly to the improvement of processes within the semiconductor industry.
Collaborations
Throughout his career, Liu has had the opportunity to collaborate with esteemed colleagues, including Edward Ross Castro and Ken Edwin Tokunaga. These collaborations have not only fostered a productive work environment but have also allowed for the exchange of ideas and advancements in electrostatic chuck technology.
Conclusion
David Ru-Chen Liu is a prominent figure in the realm of electrostatic chuck innovation. His patent for the negative offset bipolar electrostatic chuck illustrates his ability to address critical challenges in semiconductor manufacturing. As technology continues to evolve, Liu's contributions will undoubtedly play a pivotal role in shaping the future of the industry.