Chien-Chang Liu

Title: Chien-Chang Liu: Innovator in Infrared Imaging Technology

Introduction

Chien-Chang Liu is a prominent inventor based in San Jose, CA (US). He is known for his significant contributions to the field of infrared imaging technology. His innovative work has led to the development of advanced imaging systems that have various applications in different industries.

Latest Patents

Chien-Chang Liu holds a patent for an "Uncooled infrared focal plane imager and microelectromechanical infrared detector for use therein." This invention discloses an uncooled infrared imager and associated microelectromechanical infrared detectors based on an active pixel heat balancing technique. The imager is fabricated using a commercial CMOS process along with a simple electrochemical etch stop releasing step. The basic active pixel detector structure consists of a simple cascode CMOS amplifier, where the PMOS devices are built inside a thermally-isolated floating n-well. The intrinsic coupling of the cascode currents with the self-heating of the well forms an electrothermal feedback loop that tends to maintain the well temperature constant. By employing the heat balance between incoming infrared radiation and the PMOS device power dissipation, the responsivity of the detector is controlled by the cascode biasing current.

Career Highlights

Chien-Chang Liu has made significant strides in his career, particularly through his work at the University of Michigan. His research and development efforts have focused on enhancing infrared imaging technologies, which are crucial for various applications, including surveillance, medical imaging, and environmental monitoring.

Collaborations

Chien-Chang Liu has collaborated with notable professionals in his field, including Carlos H Mastrangelo. Their joint efforts have contributed to advancements in infrared detection technologies.

Conclusion

Chien-Chang Liu is a key figure in the realm of infrared imaging technology, with a patent that showcases his innovative approach to uncooled infrared detectors. His work continues to influence the development of advanced imaging systems, making a lasting impact in the field.