Hirohisa Tanaka

Title: Innovations by Hirohisa Tanaka in Liquid Crystal Display Technology

Introduction

Hirohisa Tanaka is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of liquid crystal display (LCD) technology. With a total of 3 patents to his name, Tanaka's work has advanced the performance and efficiency of LCD devices.

Latest Patents

Tanaka's latest patents include innovative designs aimed at improving the functionality of liquid crystal display panels. One of his key inventions focuses on a liquid crystal display panel wherein an inorganic film is formed over the components. The objective of this invention is to prevent disconnection of leading wirings that extend across a seal area in a pixel-on-top structure. This design incorporates scanning lines, signal lines, and thin-film transistors (TFTs) formed over an insulating substrate. Additionally, pixel electrodes are arranged with an inorganic insulating film and an organic insulating film interposed. Driver circuits are strategically placed around the display area to apply voltage signals effectively.

Another significant patent involves a liquid crystal display device that enhances display performance while maintaining a low cost. This device features a transparent insulating substrate with pixel electrodes arranged in a matrix pattern. The invention includes poly-crystal silicon thin film transistors that apply voltage to each pixel electrode. An amorphous silicon film is formed under the active layer to shade light, preventing performance degradation.

Career Highlights

Hirohisa Tanaka has had a distinguished career at Kabushiki Kaisha Toshiba, where he has been instrumental in developing cutting-edge technologies in the field of liquid crystal displays. His innovative approaches have contributed to Toshiba's reputation as a leader in display technology.

Collaborations

Tanaka has collaborated with notable colleagues, including Motoyoshi Takase and Yasuo Ebata. Their combined expertise has fostered advancements in LCD technology and has led to the successful development of several patents.

Conclusion

Hirohisa Tanaka's contributions to liquid crystal display technology have significantly impacted the industry. His innovative patents and collaborative efforts continue to shape the future of display devices.