Tomohiko Yamamoto

Title: **Tomohiko Yamamoto: A Visionary in Light Emitting Technologies**

Introduction

Tomohiko Yamamoto, an inventive force hailing from Nara, Japan, has made significant contributions to the field of light emitting technologies. With an impressive portfolio of 38 patents, his work focuses on enhancing image display technologies and illumination devices, pushing the boundaries of innovation in this sector.

Latest Patents

Yamamoto's recent patents include a groundbreaking light emitting device designed for image display, alongside an image display apparatus and an LED driver. The inventions employ a sophisticated PWM control unit that modulates the current supplied to light emitting elements. By analyzing the Average Picture Level (APL) of image data, a control condition setting unit determines the PWM limiting condition, adjusting the PWM duty ratio accordingly. Furthermore, a PWM value calculation unit utilizes image data and reference current values to optimize the PWM value for various areas, ensuring superior functionality and performance.

Another notable patent addresses the design of a planar illumination device and its corresponding display device, focusing on reducing light leakage and maintaining luminance within edge-light type backlight systems. This innovation utilizes LEDs, a light guide plate, and a series of optical sheets to create a refined viewing experience, with strategically placed black printing in the diffuser region to enhance visual quality.

Career Highlights

Yamamoto's career is distinguished by his tenure at leading corporations such as Sharp Kabushiki Kaisha Corporation and a rebranded version of the same company, reflecting his enduring influence in the industry. Throughout these roles, he has driven forward-thinking solutions that bridge technology and user experience.

Collaborations

In his journey, Yamamoto has collaborated with talented individuals like Keiichi Tanaka and Naoto Inoue, fostering an environment of creativity and innovation. These partnerships have played a crucial role in the development of his patented technologies, showcasing the importance of teamwork in the inventive process.

Conclusion

Tomohiko Yamamoto stands out as a pivotal innovator in the realm of light emitting devices and image display technologies. His extensive patent portfolio not only reflects his technical expertise but also his commitment to advancing visual display solutions. As he continues to innovate, Yamamoto’s work will undoubtedly influence the future of display technology, enhancing the way we perceive images in our daily lives.