Jehn-Huar Chern

Title: Jehn-Huar Chern: Innovator in Image Sensor Technology

Introduction

Jehn-Huar Chern is a prominent inventor based in Morgan Hill, CA, known for his significant contributions to the field of image sensor technology. With a total of 11 patents to his name, Chern has made remarkable advancements that enhance the performance and efficiency of image sensors.

Latest Patents

Chern's latest patents include innovative designs for back-illuminated sensors and methods of manufacturing these sensors. One notable patent describes an image sensor that utilizes a pure boron layer and a second epitaxial layer with a p-type dopant concentration gradient. This design enhances the sensor's ability to detect deep ultraviolet (DUV), vacuum ultraviolet (VUV), or extreme ultraviolet (EUV) radiation. The fabrication process involves creating sensing elements and metal interconnects on the upper surface of the first epitaxial layer, followed by the formation of the second epitaxial layer and the pure boron layer. The p-type dopant concentration gradient is achieved by systematically increasing the concentration of p-type dopant during the deposition of the second epitaxial layer.

Another significant patent focuses on image sensors with grounded or biased channel-stop contacts. This design includes a first pixel, a second pixel, and a channel stop that isolates the two pixels. The channel stop features a LOCOS structure and a region of doped silicon beneath it. The back-illuminated image sensor also incorporates an electrically conductive contact that can be grounded or biased, depending on the application.

Career Highlights

Throughout his career, Jehn-Huar Chern has worked with notable companies such as KLA-Tencor Corporation and KLA Corporation. His work in these organizations has allowed him to develop and refine his innovative ideas in image sensor technology.

Collaborations

Chern has collaborated with several talented individuals in the field, including David Lee Brown and Yung-Ho Alex Chuang. These collaborations have contributed to the advancement of technology in image sensors and have fostered a creative environment for innovation.

Conclusion

Jehn-Huar Chern's contributions to image sensor technology through his patents and collaborations highlight his role as a leading inventor in the field. His innovative designs continue to push the boundaries of what is possible in image sensing technology.