Ben S B Chang

Title: Ben S B Chang - Innovator in Fingerprint Sensor Technology.

Introduction

Ben S B Chang is a notable inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of fingerprint sensor technology. His innovative approach has led to the development of a unique fabrication method for pressure type fingerprint sensors.

Latest Patents

Chang holds a patent for a "Pressure type fingerprint sensor fabrication method." This invention utilizes a commercial integrated circuit process to integrate the sensor and processing circuit on a single chip. The method features a 2-D array of capacitive pressure sensors that employ the charge sharing principle for signal reading. Each pressure sensor consists of a pair of plate electrodes with an air gap, forming a plate sensor capacitor. When a finger ridge contacts the floating electrode, the pressure alters the air gap spacing, changing the capacitance. This 2-D sensor array effectively reads the pressure distribution from the finger ridge, allowing for the construction of a fingerprint pattern.

Career Highlights

Ben S B Chang is associated with Ligh Tuning Technology Inc., where he continues to advance his research and development in sensor technology. His work has positioned him as a key figure in the innovation of fingerprint sensing solutions.

Collaborations

Chang has collaborated with notable colleagues, including Bruce C S Chou and Wallace Y W Cheng. Their combined expertise has contributed to the advancement of technology in their field.

Conclusion

Ben S B Chang's contributions to fingerprint sensor technology exemplify the impact of innovative thinking in the realm of electronics. His patented methods are paving the way for more efficient and effective fingerprint sensing solutions.