Location History:
- Kanagawa, JP (1993)
- Kawasaki, JP (1986 - 2001)
Company Filing History:
9 out of 52,751 
1 out of 2,916 
Years Active: 1986-2001
Title: The Innovations of Yoshito Kawakyu
Introduction
Yoshito Kawakyu is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 10 patents. His work primarily focuses on methods for producing polycrystalline silicon and enhancing the performance of thin film transistors.
Latest Patents
One of his latest patents is a method of producing polycrystalline silicon. This method involves a thin film transistor that is adapted to each pixel switch in a liquid crystal display. The polycrystalline silicon layer is created by crystallizing amorphous silicon deposited on a glass substrate through laser annealing. A unique characteristic of this process is that the intensity distribution of the laser beam has a peak shifted upstream in the direction the glass substrate is moved. This innovative approach allows for a wider fluence margin of the laser beam, achieving high field-effect mobility and yield.
Another notable patent is a method for manufacturing a polycrystal semiconductor film. This method includes applying a high-energy beam to the surface of a semiconductor film, which can be either amorphous or polycrystalline. The process melts only the semiconductor film and solidifies it through a coexisting solid and liquid state. By controlling the heating of the liquid part and extending the solidification time, a polycrystal semiconductor film with large grain diameters is formed. The use of a base film with a high melting point helps to suppress heat dissipation, further enhancing the quality of the semiconductor film.
Career Highlights
Throughout his career, Yoshito Kawakyu has worked with notable companies such as Toshiba Corporation and Tokyo Shibaura Electric Co., Ltd. His experience in these organizations has contributed to his expertise in semiconductor technology and innovation.
Collaborations
Yoshito Kawakyu has collaborated with various professionals in his field, including Mitsuo Nakajima. Their joint efforts have led to advancements in semiconductor manufacturing techniques.
Conclusion
Yoshito Kawakyu's contributions to the field of semiconductor technology are significant and impactful. His innovative methods for producing polycrystalline silicon and enhancing thin film transistors demonstrate his expertise and commitment to advancing technology. His work continues to influence the industry and inspire future innovations.