Chienliu Chang

Title: Innovator Spotlight: Chienliu Chang

Introduction: Chienliu Chang, an esteemed inventor based in Los Altos, California, has made significant contributions to the field of piezoelectric micromachined ultrasound transducers. With a total of four patents, Chang has established himself as a notable figure in the tech industry, particularly with his cutting-edge innovations in ultrasound technology.

Latest Patents: Chienliu Chang's latest innovations include the following patents:

1. **Piezoelectric micromachined ultrasound transducer device with piezoelectric barrier layer** - This invention features a PMUT device that incorporates multiple layers, including a structural layer, a piezoelectric layer, and electrode layers. It utilizes conductive barrier layers to prevent the diffusion of the piezoelectric material into the electrodes, enhancing the device's performance.

2. **Piezoelectric micromachined ultrasound transducer device with multi-layer etched isolation trench** - This device includes a layer of piezoelectric material activated and sensed by an electrode along with a conductive plane layer. It is equipped with isolation trenches to ensure that the conductive layers of adjacent PMUT devices do not interfere with one another, thus improving functionality in PMUT arrays.

Career Highlights: Currently, Chienliu Chang works at InvenSense, Inc., where he continues to push the boundaries of innovation within the field of ultrasound technology. His role involves not only the development of new technologies but also the enhancement of existing devices, showcasing his commitment to advancing the industry.

Collaborations: Throughout his career, Chienliu has collaborated with talented coworkers such as Nikhil Apte and Mei-Lin Chan. These partnerships facilitate the sharing of creative ideas and expertise, further enriching the innovation landscape at InvenSense, Inc.

Conclusion: Chienliu Chang is a remarkable inventor whose contributions to piezoelectric micromachined ultrasound transducer technology have been instrumental in shaping the future of this field. With a strong patent portfolio and collaborative spirit, Chang continues to inspire upcoming innovations in ultrasound devices.