Location History:
- Yao, JP (2005)
- Osaka, JP (2007 - 2014)
Company Filing History:
Years Active: 2005-2014
Title: Hironobu Tatsumi: Innovator in Liquid Crystal Display Technology
Introduction
Hironobu Tatsumi is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of liquid crystal display (LCD) technology. With a total of 4 patents to his name, Tatsumi continues to push the boundaries of innovation in display devices.
Latest Patents
One of his latest patents is for a liquid crystal display device. This device includes a first substrate and a second substrate that are opposed to each other, with a liquid crystal layer placed between them. The design features a plurality of pixels, each having a transmission region that transmits light from the first substrate side and a reflection region that reflects light from the second substrate side. A transparent layer is incorporated in the reflection region to make the liquid crystal layer thinner in that area compared to the transmission region. Additionally, a groove is formed between the pixels on the surface of the first substrate facing the liquid crystal layer.
Another notable patent involves an active substrate for display apparatuses. This substrate comprises a switching element with a first drive region and a second drive region. A signal line connects to the first drive region, while a pixel electrode connects to the second drive region. The design includes layers of semiconductor and conductive materials, along with an insulating film that separates them. The overlapping portions of these layers allow for short-circuiting by applying energy to the insulating film.
Career Highlights
Hironobu Tatsumi is currently associated with Sharp Kabushiki Kaisha Corporation, a leading company in the electronics industry. His work has significantly advanced the development of LCD technology, making it more efficient and effective for various applications.
Collaborations
Tatsumi has collaborated with notable coworkers, including Mutsumi Nakajima and Ichirou Shiraki. Their combined expertise has contributed to the successful development of innovative display technologies.
Conclusion
Hironobu Tatsumi is a key figure in the advancement of liquid crystal display technology. His patents reflect a commitment to innovation and excellence in the field. Through his work at Sharp Kabushiki Kaisha Corporation, he continues to influence the future of display devices.