Company Filing History:
Years Active: 2006-2007
Title: Inventor Profile: Lawrence Cheung
Introduction
Lawrence Cheung is an innovative inventor based in Wilmington, DE, known for his contributions to the field of imaging technology. With a total of three patents to his name, Cheung has made significant strides in enhancing x-ray imaging systems, particularly through the development of advanced flat panel x-ray imagers.
Latest Patents
Cheung's latest patents focus on an amorphous selenium flat panel x-ray imager designed for tomosynthesis and static imaging. This innovative technology aims to reduce ghosting effects and includes overvoltage protection by utilizing optimal leakage current characteristics of the thin-film transistor array. The design incorporates a top electrode made of suitable material placed directly on the amorphous selenium-based charge generator layer, facilitating charge transport and minimizing ghosting. Alternatively, a non-insulating organic layer may be interposed between the top electrode and the charge generating layer. The thin-film transistors exhibit leakage current behavior that increases slowly with voltage within a specific range, corresponding to object exposure. This feature enables the device to provide enhanced protection against higher x-ray exposures by allowing a significant rise in leakage current within elevated voltage ranges. The applied voltage to the top electrode ranges from 500 V to 2,000 V, optimizing the imaging process.
Career Highlights
Lawrence Cheung is currently employed at Hologic, Inc., where he plays a crucial role in the development of cutting-edge imaging solutions. His expertise in x-ray technology continues to support the company's mission to advance women's health through innovative medical devices.
Collaborations
Throughout his career, Cheung has collaborated with talented professionals, including Snezana Bogdanovich and Zhenxue Jing, contributing to the successful development of his patented technologies and reinforcing a strong team dynamic within the organization.
Conclusion
Lawrence Cheung's innovative work in x-ray imaging technology highlights his dedication to improving medical imaging solutions. His patents are a testament to his ability to address complex challenges in the field, ensuring that Hologic, Inc. remains at the forefront of medical device advancements. With continued collaboration and innovation, Cheung is set to make further significant contributions that can transform imaging practices in healthcare.