Samsung Electronics Co., Ltd.

Mihye Kim

Seungwook Lee

Haewon Lee

Jiwon Park

Donghyuk Park

Kwanyoung Oh

An image sensor includes a first floating diffusion region, a second floating diffusion region adjacent to the first floating diffusion region in a first direction, a third floating diffusion region adjacent to the first floating diffusion region in a second direction that is perpendicular to the first direction and a fourth floating diffusion region adjacent to the second floating diffusion region in the second direction. A pad is disposed on the first and second floating diffusion regions. The pad at least partially overlaps the first and second floating diffusion regions. The image sensor includes an interconnection line and a first contact connecting the pad to the interconnection line. A first surface of the pad is disposed on the first floating diffusion region and the second floating diffusion region. A device isolation pattern defines the first, second, third and fourth floating diffusion regions.

Image sensor

An image sensor includes a substrate that includes first and second surfaces that oppose each other in a first direction and pixel areas arranged in directions parallel to the first surface, a first device isolation film that separates the pixel areas, four photodiodes disposed in each of the pixel areas inside of the substrate, and arranged in a 2×2 array, a second device isolation film that separates the four photodiodes from each other, a color filter disposed on the first surface of the substrate, and that includes four regions that respectively correspond to the four photodiodes, wherein each region has a convex upper surface, and a first microlens disposed above the color filter and that corresponds to each of the pixel areas. Accordingly, in the image sensor, light incident on the internal device isolation film is reduced, and loss of autofocusing sensitivity of the image sensor is reduced.

Growing community of inventors

Hwaseong-si, South Korea

Mihye Kim