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For the Inventor, By the Inventor

Matsumoto, Japan

Toshihiko Tsuchihashi

This inventor holds 7 USPTO granted patents. Top assignee: Seiko Epson Corporation. Active years: 1998-2007.

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

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

USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 2.5

ph-index = 6

Forward Citations = 271(Granted Patents)


Location History:

  • Suwa, JP (1998)
  • Nagano-ken, JP (2000 - 2001)
  • Matsumoto, JP (2002 - 2007)

Company Filing History:

goldMedal7 out of 34,268 
 
Seiko Epson Corporation
 patents

Years Active: 1998-2007

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7 patents (USPTO):Explore Patents
1. 7268841 - Display device and electronic equipment having the same comprising a region for reflecting a polarized light and a region for absorbing the polarized light (2007-09-11),
2. 6630968 - Display device, electronic apparatus using the same, and light guider for display devices (2003-10-07),
3. 6359668 - Display device and electronic apparatus using the same (2002-03-19),
4. 6246455 - Display device with liquid crystal between reflective polarizers, and a light source illuminating between the polazers (2001-06-12),
5. 6233029 - Display device and electronic apparatus using the same having a reflective polarizer between LCD and optical element which emits light responsive to light from polarizer (2001-05-15),
6. 6118504 - Display device and electronic apparatus comprising the same (2000-09-12),
7. 5838408 - Liquid crystal device and electronic equipment using the same (1998-11-17),

Title: Innovations of Toshihiko Tsuchihashi

Introduction

Toshihiko Tsuchihashi is a prominent inventor based in Matsumoto, Japan. He has made significant contributions to the field of display technology, holding a total of 7 patents. His work focuses on enhancing the performance and efficiency of display devices.

Latest Patents

Tsuchihiko Tsuchihashi's latest patents include a display device and electronic equipment that features a region for reflecting polarized light and a region for absorbing polarized light. This innovative display device consists of a display unit and a display switching unit. The display switching unit is equipped with a reflective polarizing plate, a liquid crystal panel, and a polarizing plate arranged sequentially from the display unit to the observation side. By controlling the liquid crystal panel, the display switching unit can alternate between a light transmissive state and a light reflective state. The optical adherence of the display unit and the display switching unit is achieved through an adhesive layer, which helps to minimize contrast deterioration caused by boundary reflection while improving the device's flatness and rigidity.

Another notable patent involves a display device, electronic apparatus, and light guide for display devices. In this invention, a TN liquid crystal is utilized as the liquid crystal panel, with a polarizer positioned above it. Below the TN liquid crystal, a polarizer, a light scattering layer, and a polarized light splitter are arranged in that order. Additionally, a light guide is provided beneath the polarized light splitter to introduce light from a light source, along with a reflecting plate. The polarized light splitter acts as a reflecting polarizer, enabling effective light utilization to achieve exceptionally bright reflective and transmissive displays. The inclusion of a light diffusing layer ensures that even with an extended distance from the TN liquid crystal to the reflecting plate, no double image or display bleeding occurs in the reflective display.

Career Highlights

Toshihiko Tsuchihashi is currently employed at Seiko Epson Corporation, where he continues to innovate in the field of display technology. His work has significantly impacted the development of advanced display systems.

Collaborations

Throughout his career, Tsuchihiko has collaborated with notable colleagues, including Chiyoaki Iijima and Yasushi Kasajima. These collaborations have further enriched his contributions to the field.

Conclusion

Toshihiko Tsuchihashi

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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