公开(公告)号：US20220417456A1

公开(公告)日：2022-12-29

申请号：US17895385

申请日：2022-08-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： INGYU BAEK ,  SEUNGSIK KIM

IPC: H04N5/359 ,  H04N9/04 ,  H04N5/378

Abstract: An imaging device includes a pixel array with first and second pixels respectively having first and second conversion gains connected to row and column lines; a row driver determining a selection row line among the row lines; a readout circuit obtaining first and second pixel signals from first and second pixels connected to the selection row line; a column driver generating first and second image data from the first and second pixel signals; and an image signal processor using the first and second image data to generate an object image. The second pixels include an expansion capacitor connected between a floating diffusion node and a ground node. Exposure time of the first pixels is equal to or longer than exposure time of the second pixels. An area of a light receiving region of the first pixels is equal to an area of a light receiving region of the second pixels.

公开(公告)号：US20210250529A1

公开(公告)日：2021-08-12

申请号：US16989227

申请日：2020-08-10

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： INGYU BAEK ,  SEUNGSIK KIM

IPC: H04N5/359 ,  H04N9/04 ,  H04N5/378

Abstract: An imaging device includes a pixel array with first and second pixels respectively having first and second conversion gains connected to row and column lines; a row driver determining a selection row line among the row lines; a readout circuit obtaining first and second pixel signals from first and second pixels connected to the selection row line; a column driver generating first and second image data from the first and second pixel signals; and an image signal processor using the first and second image data to generate an object image. The second pixels include an expansion capacitor connected between a floating diffusion node and a ground node. Exposure time of the first pixels is equal to or longer than exposure time of the second pixels. An area of a light receiving region of the first pixels is equal to an area of a light receiving region of the second pixels.

公开(公告)号：US20220336514A1

公开(公告)日：2022-10-20

申请号：US17720010

申请日：2022-04-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： KANGMOOK LIM ,  SEUNGSIK KIM ,  YEOSEON CHOI

IPC: H01L27/146

Abstract: An image sensor may include a first substrate having first and second surfaces and including unit pixel regions, each of which includes a device isolation pattern and a photoelectric conversion region adjacent to the first surface of the first substrate, a pixel isolation pattern provided in the first substrate to define the unit pixel regions and to penetrate the device isolation pattern, a first impurity region and a floating diffusion region provided in the first substrate and adjacent to the first surface, a second substrate provided on the first substrate to have third and fourth surfaces, a second impurity region provided in the second substrate and adjacent to the third surface, and ground and body contacts coupled to the first and second impurity regions, respectively. The ground contact and the body contact may be electrically separated from each other.

公开(公告)号：US20200260025A1

公开(公告)日：2020-08-13

申请号：US16674202

申请日：2019-11-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： MINWOONG SEO ,  SEUNGSIK KIM ,  JUNGCHAK AHN ,  JAEKYU LEE ,  DONGMO IM ,  DONGSEOK CHO

IPC: H04N5/355

Abstract: A method of driving an image sensor includes integrating an overflowed charge from a photodiode in the floating diffusion area and a dynamic range capacitor. The dynamic range capacitor is formed between the floating diffusion area and a power supply voltage. The method further includes sampling a first voltage formed in the floating diffusion area by the integrated overflowed charge, resetting the photodiode, the floating diffusion area, and the dynamic range capacitor, sampling a reset level of the reset floating diffusion area, transferring a charge accumulated in the photodiode to the floating diffusion area, and sampling a second voltage formed in the floating diffusion area.