Nara, Japan

Seiji Nakashima

This inventor holds 1 USPTO granted patent. Top assignee: Panasonic Corporation. Active years: 2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiji Nakashima. Retrieved from https://idiyas.com/inventor/seiji-nakashima-vqw0h8df

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

Calculating rank

Average Co-Inventor Count = 3.0

ph-index = 1

Forward Citations = 2(Granted Patents)


Company Filing History:


Years Active: 2011

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1 patent (USPTO):Explore Patents

Title: Seiji Nakashima and Organic EL Display Innovation.

Introduction

Seiji Nakashima is an inventor associated with Nara, Japan, and Panasonic Corporation. His patent work includes an innovation in top-emission organic electroluminescent (EL) displays, with a focus on improving light extraction while supporting low power consumption.

Latest Patents

Nakashima is credited with 1 patent: “Organic EL Display and Method for Manufacturing Same.” The invention describes a top-emission organic EL display with a sealing film made of transparent inorganic materials. It specifies that the inner layer has a lower material density than the outer layer, a structure intended to improve light-extraction efficiency. Examples of the transparent inorganic materials include silicon oxide, silicon nitride, silicon oxynitride, and aluminum nitride. The patent presents this design as a way to support a low-power-consumption display.

Career Highlights

Nakashima’s listed patent work is connected with Panasonic Corporation and addresses display technology, particularly the design of sealing films for organic EL devices.

Collaborations

His listed coworkers include Hidehiro Yoshida and Toshiyuki Suemitsu. The available information identifies them as coworkers but does not specify their roles in the patent.

Conclusion

Seiji Nakashima’s patent describes a layered sealing-film design for top-emission organic EL displays, combining a lower-density inner layer with a denser outer layer to improve light extraction and support energy-efficient display technology.

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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