Kwan Sik Cho

Title: Kwan Sik Cho - Innovator in Image Sensor Technology

Introduction

Kwan Sik Cho is a prominent inventor based in Hwaseong-si, South Korea. He is known for his contributions to the field of image sensor technology. With a total of 3 patents to his name, Cho has made significant advancements that enhance the performance and efficiency of image sensors.

Latest Patents

One of his latest patents is titled "Image sensor including a separation structure." This invention describes an image sensor that features a substrate with first and second surfaces, along with first and second regions. The unit pixels, which include photoelectric conversion layers, are arranged within the first region. A pixel separation pattern extends from the first surface to the second surface in the first region, effectively separating each of the unit pixels. This pattern consists of a pixel separation spacer film and a pixel separation filling film. Additionally, a dummy pixel separation pattern is present in the second region, which includes a dummy pixel separation filling film. The wiring structure on the second surface comprises an inter-wiring insulating film and a first wiring, with a first contact connecting the dummy pixel separation filling film to the first wiring. Notably, the height of the pixel separation filling film is greater than that of the dummy pixel separation filling film.

Another significant patent is "Image sensor and method for fabricating the same." This invention outlines an image sensor that includes a substrate and a photoelectric conversion region located within it. The design features a first active region that encompasses a ground region, a floating diffusion region, and a channel region connecting the two. A substrate trench is situated within the channel region, and a transfer gate is positioned on the substrate face. This gate includes a lower gate that partially fills the substrate trench and an upper gate with a smaller width than the lower gate. A gate spacer is interposed between the ground region and the upper gate within the substrate trench.

Career Highlights

Kwan Sik Cho is currently employed at Samsung Electronics Co., Ltd., where he continues to innovate in the field of image sensors. His work has contributed to the advancement of technology in consumer electronics, particularly in imaging devices.

Collaborations

Throughout his career, Cho has collaborated with notable colleagues, including Min Jung Jang and Seung Kuk Kang. These partnerships have fostered a creative environment that encourages innovation and the development of cutting-edge technologies.