Company Filing History:
3 out of 832,880 Years Active: 2004
Title: The Innovative Mind of Seiji Umemoto
Introduction
Seiji Umemoto, a talented inventor hailing from Toyohashi, Japan, has made significant contributions to the field of liquid crystal display technology. With a total of three patents to his name, Umemoto stands out for his innovative approaches to enhancing display devices.
Latest Patents
One of Umemoto's notable patents is a "Liquid crystal display device with a light guide having random V-shaped dots." This invention involves a liquid crystal display device that utilizes a light guide plate paired with a light source located on one of the plate's side surfaces. The setup allows external light to penetrate the light guide plate and illuminate the liquid crystal display portion. The unique feature of this invention is the formation of numerous dots on the opposite surface of the light guide plate, each constructed as a small recess or protrusion that reflects light towards the display portion. These dots are designed with a substantially V-shape in cross-section, with an inclination angle ranging between 35° to 43°.
Another significant patent by Umemoto is a "Method for manufacturing a light guide plate." This method entails the production of a light guide plate featuring dots on one of its surfaces. The process begins with forming an oxide film on a crystal plane of a silicon substrate and applying a resist film on top. A dot pattern is created in the oxide film using the resist film as a mask, followed by anisotropic etching of the silicon substrate. The procedure continues with the formation of a metal film, which is later stripped to produce a stamper or a replica. Finally, the dots are transferred onto a film or plastic sheet using the stamper.
Career Highlights
Seiji Umemoto's journey as an inventor showcases his dedication to technological advancement, particularly in display technology. His emphasis on practicality and innovation is evident in his patented inventions, which aim to improve the efficiency and quality of liquid crystal displays. His work is vital in an era where visual technology plays a crucial role in consumer electronics.
Collaborations
Throughout his career, Umemoto has collaborated with prominent figures in the industry, including Hitoshi Taniguchi and Yasuo Hira. These collaborations have allowed for the exchange of ideas and advancements, driving his innovative projects forward. Working alongside experienced professionals reinforces the importance of teamwork in fostering creativity and progress.
Conclusion
Seiji Umemoto is a remarkable inventor whose contributions to liquid crystal display technology have paved the way for future innovations. With his inventive spirit and commitment to excellence, Umemoto continues to inspire those in the field and propel advancements in display technology. The impact of his work is unmistakable, and as technology evolves, so too will the legacy of his inventions.