Company Filing History:
9 out of 42,517 
5 out of 23 
2 out of 3 Years Active: 2001-2011
Title: **Innovative Contributions of Yoshiharu Takeda**
Introduction
Yoshiharu Takeda is a renowned inventor based in Mobara, Japan. He has made significant contributions to the field of liquid crystal display technologies, holding a total of 11 patents. His innovative ideas have paved the way for advancements in display devices, particularly in improving backlighting systems.
Latest Patents
Among Takeda's latest patents is a liquid crystal display device featuring an improved backlight. This device comprises a liquid crystal display panel containing a liquid crystal layer sandwiched between two transparent substrates. One of these substrates is equipped with patterned electrodes on its inner surface, while the backlight is positioned behind the display panel. The backlight includes at least one discharge tube with a sealed-off transparent structure, featuring a phosphor film on its inner surface and a discharge gas inside. An innovative aspect of this design is the alternating voltages applied to adjacent electrodes, which operate at differing frequencies, enhancing the display's performance.
Another notable patent relates to a fluorescent lamp equipped with an external electrode, intended for use as backlighting in liquid crystal display devices. This invention aims to minimize the non-essential portions of the backlight by reducing the length of the external electrode in the axial direction. By introducing a concave feature at the end of the fluorescent lamp and integrating the external electrode within this concave portion, Takeda's design ensures that the total area of the external electrodes is maintained, even with a shorter overall length. The use of modified graphite enhances the electrode's mechanical strength and provides stable discharge performance.
Career Highlights
Throughout his career, Yoshiharu Takeda has worked with prominent companies, including Hitachi, Ltd. and Hitachi Electronic Devices Co., Ltd. His experiences at these organizations have undoubtedly influenced his innovative approaches and contributed to his expertise in display technologies.
Collaborations
Takeda has collaborated with fellow inventors such as Seiichi Nishiyama and Shigetake Takaku. These partnerships have fostered a creative environment that has led to the advancement of technologies in the realm of liquid crystal displays.
Conclusion
Yoshiharu Takeda's contributions to the field of liquid crystal displays are noteworthy, with a portfolio of patents that demonstrate his innovative spirit. His latest inventions reflect a commitment to enhancing display technology, ensuring better performance and efficiency. As the industry continues to evolve, Takeda's work will undoubtedly shape the future of display devices.