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For the Inventor, By the Inventor

Ibaraki, Japan

Kenichi Hashimoto

This inventor holds 9 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1989-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kenichi Hashimoto. Retrieved from https://idiyas.com/inventor/kenichi-hashimoto-oqcexlu6

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

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 7.6

ph-index = 6

Forward Citations = 344(Granted Patents)


Location History:

  • Katsuta, JP (1989 - 1990)
  • Ibaraki, JP (1992 - 1993)
  • Hitachinaka, JP (1997 - 1998)

Company Filing History:

goldMedal9 out of 42,740 
 
Hitachi, Ltd.
 patents

Years Active: 1989-1998

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9 patents (USPTO):Explore Patents
1. 5831694 - TFT panel for high resolution- and large size- liquid crystal display (1998-11-03),
2. 5760854 - Liquid crystal display apparatus (1998-06-02),
3. 5668379 - Active matrix crystal display apparatus using thin film transistor (1997-09-16),
4. 5200277 - Electroluminescent device (1993-04-06),
5. 5182491 - Thin film electroluminescent device (1993-01-26),
6. 5099172 - Thin film electroluminescent device (1992-03-24),
7. 4945009 - Electroluminescence device (1990-07-31),
8. 4877994 - Electroluminescent device and process for producing the same (1989-10-31),
9. 4857802 - Thin film EL element and process for producing the same (1989-08-15),

Title: Kenichi Hashimoto: Innovator in Liquid Crystal Display Technology

Introduction

Kenichi Hashimoto is a prominent inventor based in Ibaraki, Japan. He has made significant contributions to the field of liquid crystal display (LCD) technology, holding a total of 9 patents. His work focuses on enhancing the performance and efficiency of TFT panels, which are crucial for high-resolution and large-size displays.

Latest Patents

Among his latest patents, Hashimoto has developed a TFT panel designed for high-resolution and large-size liquid crystal displays. This innovative display unit incorporates a gate electrode line, a drain electrode line, and a gate electrode and source/drain electrode made from metal Nb or an alloy material of Nb. The substrate is made of glass, with dimensions preferably exceeding 300 mm on one side and a thickness of 1 mm or less. To achieve low wiring resistance and enhance the resolution of the TFT panel, the resistivity of the metal Nb or its alloy is ideally 25 μΩ.cm or less, while the film stress on the glass substrate is maintained at 400 MPa or less. Additionally, he has patented a liquid crystal display apparatus that ensures bright image display and improved production yield by utilizing a gate insulating film with an aperture smaller than the pixel electrode's plane area.

Career Highlights

Kenichi Hashimoto has had a distinguished career at Hitachi, Ltd., where he has been instrumental in advancing LCD technology. His innovative designs and patents have significantly impacted the industry, making him a key figure in the development of modern display technologies.

Collaborations

Throughout his career, Hashimoto has collaborated with notable colleagues, including Kenichi Onisawa and Kazuo Taguchi. These partnerships have fostered a creative environment that has led to groundbreaking advancements in liquid crystal display technology.

Conclusion

Kenichi Hashimoto's contributions to the field of liquid crystal displays exemplify his dedication to innovation and excellence. His patents and collaborative efforts continue to shape the future of display technology, making him a significant figure in the industry.

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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