Kawasaki, Japan

Hisashi Yamaguchi



Average Co-Inventor Count = 4.4

ph-index = 20

Forward Citations = 1,760(Granted Patents)

Forward Citations (Not Self Cited) = 1,747(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kobe, JA (1976)
  • Kakogawa, JP (1978)
  • Kobe, JP (1979 - 1984)
  • Hyogo, JP (1978 - 1985)
  • Yamatokoriyama, JP (1993)
  • Tokyo, JP (2001 - 2006)
  • Nabari, JP (2006)
  • Kanagawa, JP (1998 - 2010)
  • Atsugi, JP (1985 - 2013)
  • Kawasaki, JP (1986 - 2013)
  • Osaka, JP (2014)

Company Filing History:


Years Active: 1976-2014

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Areas of Expertise:
Liquid Crystal Display
Display Device
Vertically-Aligned LCD
Multilayer Display Element
Active Matrix Display
Optical Display Device
Projection Type Display
Lighting Unit
Image Processing
Data Voltage Control
Diffraction Grating
Quality Improvement Techniques
68 patents (USPTO):Explore Patents

Title: Hisashi Yamaguchi: Innovator in Liquid Crystal Display Technology

Introduction

Hisashi Yamaguchi is a prominent inventor based in Kawasaki, Japan, recognized for his significant contributions to the field of liquid crystal display (LCD) technology. With an impressive portfolio of 68 patents, Yamaguchi has played a crucial role in advancing the technology that underpins modern display systems.

Latest Patents

Hisashi Yamaguchi's latest patents include groundbreaking inventions such as the liquid crystal display drive circuit and the liquid crystal display device. The drive circuit innovation allows a display reset operation to be executed efficiently without causing display inconsistencies during data reading. By utilizing a shift register and level shifter in conjunction with a display control signal, Yamaguchi has enabled the simultaneous selection of multiple lines, thus improving the performance of memory (e.g., cholesteric) liquid crystal display devices.

Additionally, Yamaguchi's liquid crystal display device comprises a unique structure that includes a liquid crystal layer with regulated domain orientations. This design not only enhances the display quality but also provides significant advancements in voltage application across pixels, making the technology more versatile and effective.

Career Highlights

Yamaguchi's career has been marked by significant achievements during his tenure with major corporations. He has worked with Fujitsu Corporation and Sharp Kabushiki Kaisha, where he contributed to pioneering research and the development of innovative display technologies. His extensive work and dedication to the field have positioned him as a leading figure in LCD innovation.

Collaborations

Throughout his career, Hisashi Yamaguchi has collaborated with talented colleagues such as Tetsuya Kobayashi and Toshihiro Suzuki. These partnerships have fostered a creative environment where innovative ideas can flourish, further enriching the landscape of liquid crystal display technologies.

Conclusion

Hisashi Yamaguchi's contributions to the field of liquid crystal displays are invaluable, with numerous patents to his name that demonstrate his ingenuity and commitment to innovation. His work not only enhances the functionality of display devices but also propels the industry forward, inspiring future advancements in technology. As the demand for high-quality displays continues to grow, the impact of Yamaguchi's inventions will remain significant in shaping the future of visual technology.

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