Company Filing History:
Years Active: 1991
Title: Keizo Ichinose: Innovator in Liquid Crystal Display Technology
Introduction
Keizo Ichinose is a prominent inventor based in Osaka, Japan. He is known for his significant contributions to the field of liquid crystal display technology. His innovative work has led to advancements that enhance image quality in various applications.
Latest Patents
Ichinose holds a patent for a phase retarder and a liquid crystal display utilizing this technology. The patent describes a phase retarder obtained by uniaxially stretching a thermoplastic resin film. This phase retarder has a retardation value ranging from 30 to 1200 nm and a color difference of no more than 30 when positioned between crossed polarizers. The optical axis of the phase retarder is fixed and makes an angle of 45 degrees with respect to the planes of polarization of the polarizers. This design ensures freedom from optical color unevenness and is suited for new optical uses, including liquid crystal displays. The resulting liquid crystal display exhibits markedly improved image quality.
Career Highlights
Ichinose is associated with Sumitomo Chemical Company, Limited, where he has been able to apply his expertise in developing advanced materials for optical applications. His work has been instrumental in pushing the boundaries of liquid crystal technology.
Collaborations
Throughout his career, Ichinose has collaborated with notable colleagues such as Kimishige Nakamura and Shuji Kitamura. These collaborations have further enriched his research and development efforts in the field.
Conclusion
Keizo Ichinose's contributions to liquid crystal display technology exemplify the impact of innovative thinking in the field of optics. His patent for a phase retarder has paved the way for advancements that significantly enhance image quality in displays.