Kumamoto, Japan

Naoki Nakagawa

This inventor holds 8 USPTO granted patents. Top assignees: Advanced Display, Inc., Asahi Glass Company, Limited, Kabushiki Kaisha Advanced Display. Active years: 1995-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Naoki Nakagawa. Retrieved from https://idiyas.com/inventor/naoki-nakagawa-jyc2lp50

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 2.8

ph-index = 6

Forward Citations = 215(Granted Patents)


Location History:

  • Kikuchi-gun, JP (1997 - 2003)
  • Kumamoto, JP (1995 - 2006)

Company Filing History:


Years Active: 1995-2006

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8 patents (USPTO):Explore Patents

Title: Naoki Nakagawa: Innovator in Thin-Film Technology

Introduction: Naoki Nakagawa is a prominent inventor based in Kumamoto, Japan, known for his significant contributions to the field of display technology. With a robust portfolio of eight patents, he has made remarkable strides in enhancing the performance and reliability of liquid crystal display (LCD) devices.

Latest Patents: Among his latest inventions is a patent related to a TFT array substrate and a liquid crystal display device utilizing this substrate. This innovation specifically addresses the widths of the portions of a semiconductor layer and a drain line that overlap with the edge line of a gate electrode. By making these widths smaller than the channel width of a thin-film transistor, Nakagawa successfully reduces the overlap area of the gate electrode and drain electrode. This reduction is pivotal in minimizing variations due to alignment errors during the photolithography process used in patterning the gate lines, drain electrodes, and source electrodes. Consequently, this innovation lowers the frequency of display defects, enhancing overall display quality.

Career Highlights: Throughout his career, Naoki Nakagawa has worked with notable companies such as Advanced Display, Inc. and Mitsubishi Electric Corporation. His experiences in these organizations provided him with the platform to develop his groundbreaking technologies, significantly impacting the display industry.

Collaborations: Nakagawa has collaborated with esteemed colleagues, including Hironori Aoki and Takafumi Hashiguchi. Their shared expertise and innovative vision have undoubtedly contributed to his successful patent portfolio and advancements in display technology.

Conclusion: Naoki Nakagawa's contributions to thin-film transistor technology mark him as a key figure in the evolution of liquid crystal displays. His patented innovations not only demonstrate his technical proficiency but also reflect his commitment to improving visual technology in devices encountered daily. As he continues to innovate, the impact of his work will resonate within the technology landscape for years to come.

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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