Sakai, Japan

Masahiro Hasegawa

USPTO Granted Patents = 59 

 

Average Co-Inventor Count = 3.2

ph-index = 5

Forward Citations = 113(Granted Patents)

Forward Citations (Not Self Cited) = 111(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Fukuyama, JP (1997 - 2004)
  • Nara, JP (2009)
  • Tenri, JP (1992 - 2011)
  • Hiroshima, JP (2013)
  • Osaka, JP (2011 - 2022)
  • Sakai, JP (2018 - 2024)

Company Filing History:


Years Active: 1992-2024

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Areas of Expertise:
Flexible Display Device
Liquid Crystal Display
Optical Stack
Photo-Alignment Film
Circularly Polarizing Plate
Mirror Display
Three-Dimensional Video Recognition
Electronic Element Module
Birefringent Medium
Display Device Manufacturing
Liquid Crystal Panel
59 patents (USPTO):Explore Patents

Title: Innovator of Flexible and Foldable Displays: Masahiro Hasegawa

Introduction: Masahiro Hasegawa, based in Sakai, Japan, is a prolific inventor recognized for his significant contributions to display technologies. With an impressive portfolio of 59 patents, Hasegawa has established himself as a leading figure in the field of innovative display devices.

Latest Patents: Hasegawa's recent inventions include notable patents such as the "Flexible Display Device" and the "Foldable Display Device." In the flexible display device, a complex assembly is created with a transistor layer, a light-emitting element layer, a sealing layer, and multiple substrates designed to enhance performance. Moreover, the innovative design incorporates a water-repellent layer that ensures longevity and durability. Another significant patent is related to a "Liquid Crystal Display Device and Polarizing Plate," which aims to improve the contrast ratio in the front direction. This polarizing plate features a pair of polarizers and includes a retarder and diffusion layer that work together to enhance visual clarity.

Career Highlights: Masahiro Hasegawa has made substantial advancements in his field while working with renowned companies. He spent time at Sharp Corporation, where he contributed to groundbreaking display technologies and later continued his innovative efforts at Tomoegawa Co., Ltd. His tenure at these companies has been instrumental in shaping the landscape of modern display devices.

Collaborations: Throughout his career, Hasegawa collaborated with talented individuals such as Akira Sakai and Kiyoshi Minoura. These partnerships have facilitated the exchange of ideas and expertise, further fueling the innovative processes behind his work.

Conclusion: Masahiro Hasegawa exemplifies the spirit of innovation in the realm of display technologies. With 59 patents to his name, his contributions to flexible and foldable displays significantly enhance the consumer electronic experience. As the industry continues to evolve, Hasegawa's work will undoubtedly leave a lasting impact.

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