Samsung Electronics Co., Ltd.

Kang-Sun Lee

Jung-Chak Ahn

Kyoung-Sik Moon

Sung-Ho Choi

Moo-Sup Lim

Kyung-Ho Lee

Bum-Suk Kim

Yi-Tae Kim

Dong-Young Lee

Tae-Sub Jung

Kwang-il Jung

Young-Bae Kee

Chang-keun Lee

Hyun-Pil Noh

Je-Won Yu

A pixel cell includes a substrate, an epitaxial layer, and a photo converting device in the epitaxial layer. The epitaxial layer has a doping concentration profile of embossing shape, and includes a plurality of layers that are stacked on the substrate. The photo converting device does not include a neutral region that has a constant potential in the vertical direction. Therefore, the image sensor including the pixel cell has high quantization efficiency, and a crosstalk between photo-converting devices is decreased.

Image sensor including a pixel cell having an epitaxial layer, system having the same, and method of forming a pixel cell

An image sensor includes a photoelectric converter, a reflector, and a charge carrier guiding region. The reflector is disposed under the photoelectric converter, and the charge carrier guiding region is disposed between the photoelectric converter and the reflector. The reflector reflects incident light passed by the photoelectric converter back through the photoelectric converter for increasing photoelectric conversion efficiency and reduced crosstalk. The charge carrier guiding region dissipates undesired charge carriers for further increasing photoelectric conversion efficiency.

Image sensor with high conversion efficiency

Growing community of inventors

Hwasung, South Korea

Kang-Sun Lee