Changhoon Choi

Title: Changhoon Choi: Innovator in Semiconductor-Based Image Sensors

Introduction

Changhoon Choi is a prominent inventor based in Palo Alto, California, known for his significant contributions to the field of semiconductor-based image sensors. With a total of 10 patents to his name, Choi has been at the forefront of innovation in sensor technology, focusing on enhancing the capabilities of image sensors for various applications.

Latest Patents

Among his latest patents, Choi has developed an integrated sensor for lifetime characterization. This technology relates to improved designs of semiconductor-based image sensors. In some embodiments, the integrated circuit comprises a photodetection region and a drain region that is electrically coupled to the photodetection region. The photodetection region is configured to induce an intrinsic electric field directed from the photodetection region to the drain region. Additionally, a charge storage region and the drain region may be positioned on the same side of the photodetection region. Furthermore, at least one drain layer is designed to receive incident photons and/or charge carriers via the photodetection region. The integrated circuit may also include multiple pixels and a control circuit that manages the transfer of charge carriers within these pixels.

Another notable patent is the sensor for lifetime plus spectral characterization. This invention focuses on integrated devices that obtain timing and/or spectral information from incident light. In this embodiment, a pixel may include one or more charge storage regions that receive charge carriers generated in response to incident photons from a light source. The charge carriers stored in these regions provide information indicative of spectral and timing data. The pixel may also feature regions with varying depths, each designed to generate charge carriers in response to incident photons. Additionally, an optical sorting element may be included to direct incident photons to specific charge storage regions.

Career Highlights

Choi has worked with several notable companies throughout his career, including Quantum-Si Incorporated and Aptina Imaging Corporation. His experience in these organizations has allowed him to refine his expertise in sensor technology and contribute to groundbreaking advancements in the field.

Collaborations

Choi has collaborated with talented individuals such as Dajiang Yang and Todd Rearick, further enhancing the innovative work being done in semiconductor-based image sensors.

Conclusion

Changhoon Choi's contributions to the field of semiconductor-based image sensors are significant and impactful. His innovative patents and collaborations reflect his dedication to advancing technology in this area