Shinji Arai

Title: Innovations by Shinji Arai in Cathode-Ray Tube Technology

Introduction

Shinji Arai is a notable inventor based in Shiga, Japan, recognized for his contributions to the field of cathode-ray tube technology. With a total of 4 patents to his name, Arai has made significant advancements that enhance the performance and cost-effectiveness of these devices.

Latest Patents

One of Arai's latest patents is for a color cathode-ray tube that features a unique constitution between a shadow mask electrode and a frame body. This design minimizes picture quality deterioration due to thermal expansion differences, while maintaining practical cost efficiency. The shadow mask electrode is constructed from metal with a low thermal expansion rate, and it is supported by a shadow mask electrode supporting body made of similar material. This innovative approach ensures that the frame body, made from metal with a different thermal expansion rate, does not compromise the overall quality of the display.

Another significant patent is for a shadow mask assembly that reduces the necessary tensile force applied to the shadow mask, as well as the weight and fabrication costs of the assembly itself. This assembly consists of a pair of bars made from metal with a first thermal expansion coefficient, linked by arms made from metal with a second thermal expansion coefficient. The shadow mask, which covers the opening of the frame, is designed to maintain its shape under tensile force, utilizing a third thermal expansion coefficient that is low enough to suppress the doming phenomenon.

Career Highlights

Shinji Arai is currently employed at NEC Corporation, where he continues to innovate and develop new technologies in the field of display systems. His work has been instrumental in advancing the capabilities of cathode-ray tubes, making them more efficient and reliable.

Collaborations

Arai has collaborated with notable colleagues such as Hiroshi Hasegawa and Tadachika Hidaka, contributing to a dynamic team focused on pushing the boundaries of technology in their field.

Conclusion

Shinji Arai's contributions to cathode-ray tube technology exemplify the impact of innovative thinking in engineering. His patents not only enhance the functionality of these devices but also pave the way for future advancements in display technology.