Kanagawa, Japan

Toshihiko Iwanaga

This inventor holds 4 USPTO granted patents. Top assignee: Sony Corporation. Active years: 1994-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshihiko Iwanaga. Retrieved from https://idiyas.com/inventor/toshihiko-iwanaga

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 3.2

ph-index = 4

Forward Citations = 123(Granted Patents)


Company Filing History:


Years Active: 1994-2000

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4 patents (USPTO):Explore Patents

Title: Toshihiko Iwanaga: Innovator in Thin Film Semiconductor Technology

Introduction

Toshihiko Iwanaga is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of semiconductor technology, particularly in the development of thin film devices. With a total of 4 patents to his name, Iwanaga's work has had a notable impact on the industry.

Latest Patents

Iwanaga's latest patents include a thin film semiconductor device for active matrix panels. This invention features a thin film transistor (TFT) that utilizes a thin film semiconductor on an insulation substrate to define an element region. Additionally, it incorporates a hygroscopic interlayer insulating layer that covers the element. Another significant patent is for a color filter structure for color display devices. This invention improves the shape of an on-chip color filter pattern, effectively removing height differences on the surface of a driving substrate. In this design, normal color filters are aligned with pixel apertures, while a dummy color filter is strategically placed in the spaces between the respective color filters, apart from contact holes. This innovation enhances the quality of liquid crystal alignment in color display devices.

Career Highlights

Toshihiko Iwanaga is currently employed at Sony Corporation, where he continues to push the boundaries of semiconductor technology. His work at Sony has allowed him to collaborate with other talented professionals in the field.

Collaborations

Some of Iwanaga's notable coworkers include Masumitsu Ino and Kikuo Kaise. Their collaborative efforts contribute to the advancement of technology within the company.

Conclusion

Toshihiko Iwanaga's contributions to thin film semiconductor technology and his innovative patents reflect his expertise and dedication to the field. His work continues to influence advancements in color display devices and semiconductor applications.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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