Location History:
- Osaka, JP (1998 - 2000)
- Kawasaki, JP (1998 - 2002)
Company Filing History:
8 out of 25,560 
3 out of 703 
2 out of 1,109 
Years Active: 1998-2002
Title: Akira Sakaigawa: Innovator in Liquid Crystal Display Technology
Introduction
Akira Sakaigawa is a prominent inventor based in Kawasaki, Japan, known for his significant contributions to the field of liquid crystal display (LCD) technology. With a total of nine patents to his name, Sakaigawa has made remarkable advancements that enhance the performance and efficiency of LCDs.
Latest Patents
One of Sakaigawa's latest patents is for a liquid crystal display element and its manufacturing method. This innovation involves creating a liquid crystal layer made of ferroelectric liquid crystal material between two electrode substrates. The design includes a substrate with electrodes, an insulating film, and an alignment film on one side, while the other substrate mirrors this structure. The alignment film is created by mixing a substance with ionic bonds, which allows ions to elute into the liquid crystal layer, resulting in a homogeneous dispersion. This method significantly reduces the effects of display history, enabling half-tone displays with excellent response characteristics.
Another notable patent involves a liquid crystal display that includes a dopant phase-separated from the liquid. In this invention, a mixture of ferroelectric or anti-ferroelectric liquid crystal material and a monomer is injected between two electrode substrates under heat. After cooling, the mixture is exposed to ultraviolet light, which polymerizes the monomer while maintaining the liquid crystal material in the smectic phase. This process creates areas within the liquid crystal that require different threshold voltages for switching, allowing for precise control of domain formation and greyscale in liquid crystal devices.
Career Highlights
Throughout his career, Akira Sakaigawa has worked with notable companies, including Sharp Corporation and the Secretary of State for Defence in Her Britannic Majesty's Government. His work has significantly impacted the development of LCD technology, making it more efficient and versatile.
Collaborations
Sakaigawa has collaborated with esteemed colleagues such as Mitsuhiro Koden and Teiyu Sako, contributing to the advancement of liquid crystal technology through shared expertise and innovative ideas.
Conclusion
Akira Sakaigawa's contributions to liquid crystal display technology have established him as a key figure in the field. His innovative patents and collaborations continue to influence the development of advanced display technologies.