Yasunori Narizuka

Title: Yasunori Narizuka: Innovator in Semiconductor Technology

Introduction

Yasunori Narizuka, a prominent inventor based in Hiratsuka, Japan, has made significant contributions to the semiconductor industry with a remarkable portfolio of 25 patents. His work focuses on innovative methods for manufacturing semiconductor integrated circuit devices, which play a crucial role in modern electronic applications.

Latest Patents

Among Yasunori Narizuka's latest inventions is a cutting-edge manufacturing method for semiconductor integrated circuit devices. This patent describes a process where a probe is contacted to a test pad without causing damage to the circuit formed within the chip during testing. This innovation involves the integration of a load jig, pressing tool, elastomer, adhesion ring, and plunger, all secured together using a nut and bolt. The design includes an elastic spring that enhances operation by effectively transmitting force from the plunger to a thin film sheet during testing, thus preserving the integrity of the device.

Another notable patent details a method for manufacturing both the semiconductor integrated circuit device and a thin film probe sheet. This process begins with the selective deposition of a copper film on the wafer's main surface, covering areas that will form a metal film as well as those outside the adhesion ring. The method includes several layers, ranging from metal film to polyimide films and interconnects, leading to the successful removal of the wafer and copper film. The advancements made here significantly reduce the risk of breakage during probe testing and ensure reliability in semiconductor applications.

Career Highlights

Yasunori Narizuka has had a distinguished career, having worked with esteemed companies such as Renesas Technology Corporation and Hitachi, Ltd. His experiences in these leading organizations have shaped his skills and led to numerous innovations in semiconductor technology.

Collaborations

Throughout his career, Narizuka has collaborated with notable coworkers, including Akio Hasebe and Yasuhiro Motoyama. These partnerships have contributed to the successful development and refinement of his patented technologies.

Conclusion

Yasunori Narizuka exemplifies the spirit of innovation in the semiconductor field. With his extensive patent portfolio and collaborative efforts, he continues to pave the way for advancements that enhance the performance and reliability of semiconductor devices in various applications. His commitment to improving testing methods not only benefits the manufacturers but also drives the industry towards greater efficiency and innovation.