公开(公告)号：US20230319431A1

公开(公告)日：2023-10-05

申请号：US18329169

申请日：2023-06-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yunhwan JUNG ,  Hyeokjong LEE ,  Sunyool Kang ,  Kyungmin Kim ,  Yunhong KIM ,  Ingyeong SHIN

IPC: H04N25/585 ,  H04N25/75 ,  H04N25/77 ,  H04N25/616 ,  H04N25/709 ,  H04N25/78

CPC classification number: H04N25/585 ,  H04N25/75 ,  H04N25/77 ,  H04N25/616 ,  H04N25/709 ,  H04N25/78

Abstract: An image sensor includes a pixel configured to operate in a high conversion gain (HCG) mode and a low conversion gain (LCG) mode during a readout period, and a correlated double sampling (CDS) circuit configured to generate a comparison signal based on a ramp signal and a pixel voltage received from the pixel, wherein the CDS circuit includes a comparator configured to: receive the pixel voltage through a first input node, receive the ramp signal through a second input node based on an LCG reset signal or an LCG image signal being received as the pixel voltage, and receive the ramp signal through a third input node based on an HCG reset signal or an HCG image signal being received as the pixel voltage; and compare the ramp signal to the pixel voltage, and output the comparison signal corresponding to a comparison result.

公开(公告)号：US20230011310A1

公开(公告)日：2023-01-12

申请号：US17857812

申请日：2022-07-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yunhong KIM ,  Yunhwan JUNG ,  Heesung CHAE ,  Mooyoung KIM ,  Haesick SUL

IPC: H04N5/378 ,  H04N5/361 ,  H04N5/369

Abstract: An image sensor may include a pixel array a pixel array including an active pixel and an optical black pixel, the active pixel configured to generate a first pixel signal, and the optical black pixel configured to generate a second pixel signal, a first biasing circuit configured to bias the first pixel signal based on a first bias voltage, a first analog-to-digital converter configured to convert the biased first pixel signal into a first digital signal, a second biasing circuit configured to bias the second pixel signal based on a second bias voltage, and a second analog-to-digital converter configured to convert the biased second pixel signal into a second digital signal, the second digital signal configured to generate smaller random noise than the first analog-to-digital converter.

公开(公告)号：US20240178242A1

公开(公告)日：2024-05-30

申请号：US18359004

申请日：2023-07-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Suyong KIM ,  Jaeyoung BAE ,  Yunhwan JUNG

IPC: H01L27/146 ,  H04N25/76 ,  H04N25/77 ,  H04N25/78

CPC classification number: H01L27/14612 ,  H04N25/77 ,  H04N25/7795 ,  H04N25/78

Abstract: An image sensor device includes a first pixel that is located at a first row and a first column and comprising a first select transistor and is configured to output a first pixel signal through a first column line, and a second pixel that is located at a second row different from the first row and the first column and comprising a second select transistor and is configured to output a second pixel signal through a second column line. During a first time period, the first select transistor is turned on and the first pixel signal is output, and during a second time period, the second select transistor is turned on, and a first voltage is applied to the second column line through the second select transistor, the second time period including the first time period.

公开(公告)号：US20210335869A1

公开(公告)日：2021-10-28

申请号：US17119330

申请日：2020-12-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yunhong KIM ,  Yunhwan JUNG ,  Heesung CHAE

IPC: H01L27/146 ,  H04N5/378

Abstract: An image sensor includes a substrate including an active pixel region and an inactive pixel region, having a smaller area than the active pixel region; a plurality of active pixels in the active pixel region, each of the plurality of active pixels including a first transfer transistor, a first reset transistor, a first driving transistor, and a first selection transistor; and a plurality of inactive pixels in the inactive pixel region, each of the plurality of inactive pixels including a second transfer transistor, a second reset transistor, a second driving transistor, a second selection transistor, and a switch transistor connected to a node between the second driving transistor and the second select transistor. The plurality of switch transistors, included in the plurality of inactive pixels, are connected to each other by a connection wiring.

公开(公告)号：US20230295908A1

公开(公告)日：2023-09-21

申请号：US18322355

申请日：2023-05-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyung-Min KIM ,  Haesick SUL ,  Sunyood KANG ,  Yungong KIM ,  Seongnam-si SUH ,  Hyeongji LEE ,  Yunhwan JUNG

IPC: E03C1/086

CPC classification number: E03C1/086

Abstract: Disclosed is a bandgap reference circuit, which includes a first current generator that generates a first current proportional to a temperature, a second current generator that outputs a second current obtained by mirroring the first current to a first node at which a reference voltage is formed, a first resistor that is connected with the first node and is supplied with the second current, and a first bipolar junction transistor (BJT) that includes an emitter node connected with the first resistor, a base node supplied with a first power, and a collector node supplied with a second power different from the first power.

公开(公告)号：US20220038651A1

公开(公告)日：2022-02-03

申请号：US17198355

申请日：2021-03-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sunyool KANG ,  Kyungtae KIM ,  Yunhwan JUNG ,  Yongjun CHO ,  Heesung CHAE

IPC: H04N5/3745 ,  H04N5/369 ,  H04N5/378

Abstract: An image sensor includes a first amplifier comparing and amplifying a first voltage signal received from a first column line, and a ramp signal; a second amplifier amplifying an output of the first amplifier; a third amplifier comparing and amplifying a second voltage signal received from a second column line, and the ramp signal; and a fourth amplifier amplifying an output of the third amplifier, wherein the second amplifier and the fourth amplifier output a decision signal at different points in time by dummy switch control split.

公开(公告)号：US20220078363A1

公开(公告)日：2022-03-10

申请号：US17333712

申请日：2021-05-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sunyool KANG ,  Yunhwan JUNG ,  Seokyong HONG

IPC: H04N5/369 ,  H04N5/376 ,  H04N5/378

Abstract: An image sensor includes a pixel array including a plurality of pixels connected to row lines extending in a first direction and to column lines extending in a second direction intersecting the first direction, a ramp voltage generator configured to output a ramp voltage, a plurality of comparators, each of the plurality of comparators including a first input terminal to which the ramp voltage is input, and a second input terminal connected to one of the column lines, and a replica circuit having a same structure as a structure of a portion of the comparators. Each of the comparators includes a plurality of transistors, a first auto-zero transistor connected to the first input terminal, a second auto-zero transistor connected to the second input terminal, and wirings connected to the plurality of transistors, the first auto-zero transistor, and the second auto-zero transistor.

公开(公告)号：US20210193568A1

公开(公告)日：2021-06-24

申请号：US17192408

申请日：2021-03-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yunhwan JUNG ,  Sunyool KANG ,  Jaehong KIM

IPC: H01L23/522 ,  H04N5/357 ,  H04N5/378 ,  H03K4/08 ,  H01L27/08

Abstract: A comparison circuit that includes an input sampling capacitor and an image sensor including the same are provided. The comparison circuit includes an amplifier configured to receive a pixel signal and a ramp signal to perform a correlated double sampling operation, a first pixel capacitor connected to the amplifier through a first floating node and configured to transmit the pixel signal, a first ramp capacitor connected to the amplifier through a second floating node and configured to transmit the ramp signal, a second pixel capacitor connected in parallel to the first pixel capacitor, and a second ramp capacitor connected in parallel to the first ramp capacitor, wherein the second pixel capacitor is formed between the first floating node and first peripheral routing lines, and the second ramp capacitor is formed between the second floating node and second peripheral routing lines.

公开(公告)号：US20180033722A1

公开(公告)日：2018-02-01

申请号：US15662630

申请日：2017-07-28

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yunhwan JUNG ,  Sunyool KANG ,  Jaehong KIM

IPC: H01L23/522 ,  H01L27/08

CPC classification number: H01L23/5223 ,  H01L23/5225 ,  H01L27/0805 ,  H03K4/08 ,  H04N5/3575 ,  H04N5/378

Abstract: A comparison circuit that includes an input sampling capacitor and an image sensor including the same are provided. The comparison circuit includes an amplifier configured to receive a pixel signal and a ramp signal to perform a correlated double sampling operation, a first pixel capacitor connected to the amplifier through a first floating node and configured to transmit the pixel signal, a first ramp capacitor connected to the amplifier through a second floating node and configured to transmit the ramp signal, a second pixel capacitor connected in parallel to the first pixel capacitor, and a second ramp capacitor connected in parallel to the first ramp capacitor, wherein the second pixel capacitor is formed between the first floating node and first peripheral routing lines, and the second ramp capacitor is formed between the second floating node and second peripheral routing lines.

公开(公告)号：US20240205566A1

公开(公告)日：2024-06-20

申请号：US18230290

申请日：2023-08-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yongjun CHO ,  Sunyool KANG ,  Yunhwan JUNG

IPC: H04N25/772

CPC classification number: H04N25/772

Abstract: An image sensor including a pixel array including a plurality of pixels arranged in a plurality of rows and a plurality of columns, a row driver configured to transmit control signals to the pixel array, and an analog-to-digital converter array configured to receive pixel signals from the pixel array and convert the pixel signals into a digital signal, wherein the row driver is configured to transmit a control signal such that a first pixel group arranged in a first row from among the plurality of rows and a second pixel group arranged in a second row from among the plurality of rows output pixel signals during a first period, and transmit a control signal such that a third pixel group arranged in the first row and a fourth pixel group arranged in the second row output pixel signals during a second period.