Company Filing History:
4 out of 9,638 
1 out of 4,671 
1 out of 832,761 Years Active: 1990-2002
Title: Inventor Cheng-Cheng Chang: Pioneering Optical Sensor Technologies
Introduction
Cheng-Cheng Chang, a prominent inventor based in Palo Alto, CA, has made significant contributions to the field of integrated circuit packaging and optical sensor devices. With a remarkable portfolio of 6 patents, his work showcases innovative techniques that enhance the functionality and efficiency of optical devices.
Latest Patents
One of Cheng-Cheng Chang's latest inventions is an integrated circuit packaging technique for optical sensor devices. This invention features an optical sensor formed on a first substrate, which is flip chip bonded to a second substrate that contains either a through hole or a transparent section. This alignment facilitates light contact with the optical sensor, optimizing its performance. An embodiment of this optical device structure incorporates an optical sensor, a first substrate, a second substrate, and a circuit board, providing a seamless connection between them.
Another notable patent is focused on a redistribution layer and under bump material structure for integrated circuits. This innovative structure includes a plurality of conductive pads on the active side of the circuit, designed to enhance solder bump reception. The redistribution layer incorporates multiple layers for protection and conductivity, ensuring reliable electrical connections are established.
Career Highlights
Cheng-Cheng Chang has had a distinguished career, working with leading organizations such as Hewlett-Packard Company and Agilent Technologies, Inc. His experiences at these esteemed companies have equipped him with the expertise necessary to drive innovation in optical sensor technologies.
Collaborations
During his career, Cheng-Cheng has collaborated with notable professionals, including Jacques Leibovitz and Park-Kee Yu. These partnerships have led to the successful development of pioneering technologies, further establishing his reputation as a leading inventor in the field.
Conclusion
Cheng-Cheng Chang's innovative contributions to optical sensors and integrated circuit packaging have set new standards in the industry. His relentless pursuit of technological advancement continues to inspire fellow inventors and researchers alike, solidifying his legacy as a pioneer in the realm of innovative solutions.