Company Filing History:
Years Active: 1990-1999
**Title: Win-Chyi Chang: Innovating Image Sensors from Penfield, NY**
Introduction
Win-Chyi Chang is a distinguished inventor based in Penfield, NY, renowned for his significant contributions to the field of image sensor technology. With an impressive portfolio of 12 patents, Chang has focused on enhancing light sensitivity in image sensors through innovative designs and materials.
Latest Patents
Chang's latest inventions revolve around methods of fabricating image sensors that utilize Indium Tin Oxide (ITO) electrodes. His approach incorporates the use of ITO, which is more transparent than polysilicon, allowing for greater light sensitivity. By designing pixels with asymmetric gates that maximize the area covered by ITO electrodes, he successfully addresses the challenge of impurity diffusion from the ITO into the underlying silicon. To mitigate this issue, he replaces conventional Silicon Dioxide gate dielectrics with an Oxide/Nitride/Oxide stack. Additionally, Chang has innovatively included lenslets on each pixel, enhancing light collection to improve sensitivity. Furthermore, his work on color CCD sensors with color filter patterns, such as the 'BAYER' pattern, facilitates a design that minimizes light loss, particularly in less sensitive areas. Necessary modifications to vertical clock timing ensure optimal sensor performance.
Career Highlights
Chang's career as a patent holder and inventor exemplifies his commitment to innovation in imaging technology. His role at Eastman Kodak Company has afforded him the opportunity to collaborate with leading experts in the field and to drive advancements in image sensor design.
Collaborations
In the realm of research and development, Chang has collaborated with talented colleagues, including Ram Kannegundla and Constantine N. Anagnostopoulos. These collaborations have played a crucial role in bringing Chang's innovative ideas to fruition, fostering a dynamic environment for technological enhancement within the company.
Conclusion
Win-Chyi Chang's contributions to the field of image sensors have established him as a notable inventor. Through his groundbreaking patents and collaboration with talented colleagues, Chang continues to advance the technology that underpins modern imaging systems, making a lasting impact on both the field and society at large.