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3 out of 8,780 
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1 out of 6 Years Active: 2007-2011
Title: Masanori Iida: Innovator in Semiconductor Technology
Introduction
Masanori Iida is a prominent inventor based in Gunma, Japan, known for his contributions to semiconductor technology. With a total of 3 patents to his name, Iida has made significant advancements in the manufacturing methods of semiconductor devices. His work focuses on enhancing the reliability and yield of chip size packages, which are crucial in modern electronics.
Latest Patents
One of Iida's latest patents is a semiconductor device with a recess portion over the pad electrode. This invention improves the manufacturing method of a semiconductor device formed in a chip size package, enhancing both yield and reliability. The design includes a window that exposes the first wirings only in the region of the semiconductor substrate where they exist. This innovation increases the area of the semiconductor substrate bonded to a supporting body, thereby preventing cracks and separation. Additionally, a slit is formed along the dicing line after the window is created, which is then covered with a protection film before the semiconductor substrate is diced into individual dice. This method effectively prevents separation on cut surfaces caused by blade contact during dicing.
Another significant patent by Iida is directed towards improving the reliability of chip size package type semiconductor devices. In this method, a support body is formed on the front surface of a semiconductor substrate with a first insulation film in between. A part of the substrate is selectively etched from the back surface to create an opening, followed by the formation of a second insulation film. The first and second insulation films at the bottom of the opening are then selectively etched to expose pad electrodes. A third resist layer is formed on the second insulation film, and a wiring layer is created to connect with the pad electrodes, extending onto the back surface of the substrate.
Career Highlights
Throughout his career, Masanori Iida has worked with notable companies such as Sanyo Electric Co., Ltd. and Kanto Sanyo Semiconductors Co., Ltd. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.
Collaborations
Iida has collaborated with several professionals in the field, including Takashi Noma and Katsuhiko Kitagawa. These collaborations have further enriched his work and contributed to advancements in semiconductor manufacturing.
Conclusion
Masanori Iida's contributions to semiconductor technology through his innovative patents have significantly impacted the