Location History:
- Tsukuba, JP (2019)
- Ibaraki, JP (2016 - 2020)
Company Filing History:
2 out of 4,800 
2 out of 15,844 
2 out of 1,710 
Years Active: 2016-2020
Title: Shiyang Ji: Innovator in Semiconductor Technology
Introduction
Shiyang Ji is a prominent inventor based in Ibaraki, Japan, known for his significant contributions to semiconductor technology. With a total of three patents to his name, Ji has made strides in improving the manufacturing yield and reliability of semiconductor devices.
Latest Patents
One of his latest patents focuses on a semiconductor device and its manufacturing method. This innovation enhances the manufacturing yield and reliability of a semiconductor device that includes a power semiconductor element. The design features a plurality of trenches extending in the x direction, spaced apart in the y direction, formed in a substrate with a main crystal surface tilted with respect to a <11-20> direction. Additionally, a super-junction structure is created with a p-type column region made of a semiconductor layer embedded in the trench and an n-type column region formed from the substrate between adjacent trenches. The angle error between the trench direction and the <11-20> direction is meticulously calculated to ensure optimal performance.
Another notable patent involves a silicon carbide semiconductor device and its manufacturing method. In this design, an n-type drift layer is established on the front surface of an n-type semiconductor substrate. A trench is then formed in the n-type drift layer, followed by the creation of a p-type pillar region within the trench. The depth of the trench is strategically designed to be at least three times its width, ensuring effective doping with both p-type and n-type materials.
Career Highlights
Shiyang Ji has worked with esteemed companies such as Fuji Electric Co., Ltd. and Mitsubishi Electric Corporation. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.
Collaborations
Throughout his career, Ji has collaborated with notable colleagues, including Yasuyuki Kawada and Ryoji Kosugi. These partnerships have fostered a collaborative environment that encourages innovation and the advancement of semiconductor technologies.
Conclusion
Shiyang Ji's work in semiconductor technology exemplifies the impact of innovative thinking in the field. His patents reflect a commitment to enhancing the performance and reliability of semiconductor devices, marking him as a significant figure in this industry.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.