Patents by Inventor Jung Chak Ahn

Jung Chak Ahn has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9837465
    Abstract: An image sensor includes a plurality of photoelectric detectors, a plurality of color filters, and at least one pixel isolation region between adjacent ones of the photoelectric detectors. The color filters include a white color filter, and the color filters correspond to respective ones of the photoelectric detectors. The at least one pixel isolation region serves to physically and at least partially optically separate the photoelectric detectors from one another.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: December 5, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Chak Ahn, Bum-Suk Kim
  • Patent number: 9818781
    Abstract: An image pixel includes a plurality of photodiodes formed in a semiconductor substrate, and a plurality of trenches. Each photodiode is configured to accumulate a plurality of photocharges corresponding to the intensity of light received at each photodiode through a microlens. The plurality of trenches is configured to electrically isolate the photodiodes from one another.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: November 14, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung Ho Lee, Jung Chak Ahn, Hyuk Soon Choi
  • Patent number: 9806113
    Abstract: Provided is a complementary metal-oxide-semiconductor (CMOS) image sensor. The CMOS image sensor can include a substrate having a first device isolation layer defining and dividing a first active region and a second active region, a photodiode disposed in the substrate and can be configured to vertically overlap the first device isolation layer, a transfer gate electrode can be disposed in the first active region and can be configured to vertically overlap the photodiode, and a floating diffusion region can be in the first active region. The transfer gate electrode can be buried in the substrate.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: October 31, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Sun Oh, Kyung-Ho Lee, Jung-Chak Ahn, Hee-Geun Jeong
  • Publication number: 20170287969
    Abstract: A semiconductor device includes a light-receiving element which outputs electric charges in response to incident light, and a drive transistor which is gated by an output of the light-receiving element to generate a source-drain current in proportion to the incident light, wherein the drive transistor include a first gate electrode, a first channel region which is disposed under the first gate electrode, first source-drain regions which are disposed at respective ends of the first channel region and that have a first conductivity type, and a first channel stop region which is disposed on a side of the first channel region, and that separates the light-receiving element and the first channel region, the first channel stop region having a second conductivity type that is different from the first conductivity type.
    Type: Application
    Filed: June 15, 2017
    Publication date: October 5, 2017
    Inventors: SEUNGJOO NAH, JUNG-CHAK AHN, KYUNG-HO LEE
  • Patent number: 9748299
    Abstract: A pixel for a backside illuminated (BSI) image sensor includes a semiconductor substrate having a first surface and a second surface, a photoelectric conversion region between the first surface and the second surface to generate charges in response to light received through the second surface, first trench-type isolation region surrounding the photoelectric conversion region and extending vertically from the second surface, a floating diffusion region in the semiconductor substrate below the photoelectric conversion region, and a transfer gate extending vertically from the first surface towards the photoelectric conversion region to transfer the charges from the photoelectric conversion region to the floating diffusion region. The first trench-type isolation region is formed of a negative charge material.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: August 29, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung Chak Ahn, Kyung Ho Lee, Young Woo Jung, Seung Joo Nah, Hae Yong Park
  • Publication number: 20170236858
    Abstract: An image sensor includes a substrate having a first pixel region and a second pixel region adjacent to the first pixel region, a device isolation layer between the first pixel region and the second pixel region and isolating the first pixel region and the second pixel region from each other, a first transistor disposed in the first pixel region, a second transistor disposed in the second pixel region, and a wiring structure electrically connecting the first transistor and the second transistor. The device isolation layer has a deep trench isolation (DTI) structure which extends from a top surface toward a bottom surface of the substrate.
    Type: Application
    Filed: February 6, 2017
    Publication date: August 17, 2017
    Inventors: YOUNG SUN OH, YI TAE KIM, JUNG CHAK AHN
  • Publication number: 20170229500
    Abstract: An image sensor includes a first pixel that is in an active pixel region, a second pixel that is in a dummy region adjacent the active pixel region, and a first deep trench isolation (DTI) formed between the first pixel and the second pixel.
    Type: Application
    Filed: April 28, 2017
    Publication date: August 10, 2017
    Inventors: Jun Suk LEE, Jung Chak AHN, Hee Geun JEONG, Kyung Ho LEE
  • Publication number: 20170207264
    Abstract: Provided is a complementary metal-oxide-semiconductor (CMOS) image sensor. The CMOS image sensor can include a substrate having a first device isolation layer defining and dividing a first active region and a second active region, a photodiode disposed in the substrate and can be configured to vertically overlap the first device isolation layer, a transfer gate electrode can be disposed in the first active region and can be configured to vertically overlap the photodiode, and a floating diffusion region can be in the first active region. The transfer gate electrode can be buried in the substrate.
    Type: Application
    Filed: April 3, 2017
    Publication date: July 20, 2017
    Inventors: Young-Sun OH, Kyung-Ho LEE, Jung-Chak AHN, Hee-Geun JEONG
  • Patent number: 9711557
    Abstract: A semiconductor device includes a light-receiving element which outputs electric charges in response to incident light, and a drive transistor which is gated by an output of the light-receiving element to generate a source-drain current in proportion to the incident light, wherein the drive transistor include a first gate electrode, a first channel region which is disposed under the first gate electrode, first source-drain regions which are disposed at respective ends of the first channel region and that have a first conductivity type, and a first channel stop region which is disposed on a side of the first channel region, and that separates the light-receiving element and the first channel region, the first channel stop region having a second conductivity type that is different from the first conductivity type.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: July 18, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seungjoo Nah, Jung-Chak Ahn, Kyung-Ho Lee
  • Publication number: 20170179190
    Abstract: An image sensor includes a plurality of photoelectric detectors, a plurality of color filters, and at least one pixel isolation region between adjacent ones of the photoelectric detectors. The color filters include a white color filter, and the color filters correspond to respective ones of the photoelectric detectors. The at least one pixel isolation region serves to physically and at least partially optically separate the photoelectric detectors from one another.
    Type: Application
    Filed: March 8, 2017
    Publication date: June 22, 2017
    Inventors: Jung-Chak AHN, Bum-Suk KIM
  • Publication number: 20170170239
    Abstract: An image sensor includes a substrate comprising a first face and a second surface which faces the first surface and on which light is incident, a semiconductor photoelectric conversion device on the substrate, a gate electrode located between the first surface of the substrate and the semiconductor photoelectric conversion device and extending in a first direction perpendicular to the first surface, and an organic photoelectric conversion device stacked on the second surface of the substrate.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 15, 2017
    Inventors: Tae-yon LEE, Kyoung-won NA, Jung-chak AHN, Myung-won LEE, Joo-yeong GONG
  • Patent number: 9666616
    Abstract: An image sensor includes a first pixel that is in an active pixel region, a second pixel that is in a dummy region adjacent the active pixel region, and a first deep trench isolation (DTI) formed between the first pixel and the second pixel.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: May 30, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun Suk Lee, Jung Chak Ahn, Hee Geun Jeong, Kyung Ho Lee
  • Patent number: 9647016
    Abstract: Provided is a complementary metal-oxide-semiconductor (CMOS) image sensor. The CMOS image sensor can include a substrate having a first device isolation layer defining and dividing a first active region and a second active region, a photodiode disposed in the substrate and can be configured to vertically overlap the first device isolation layer, a transfer gate electrode can be disposed in the first active region and can be configured to vertically overlap the photodiode, and a floating diffusion region can be in the first active region. The transfer gate electrode can be buried in the substrate.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: May 9, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Sun Oh, Kyung-Ho Lee, Jung-Chak Ahn, Hee-Geun Jeong
  • Patent number: 9608024
    Abstract: An image sensor such as a complementary metal-oxide-semiconductor (CMOS) image sensor and a method of manufacturing the same are provided. The CMOS image sensor includes: a semiconductor substrate including a first surface and a third surface formed by removing a part of the semiconductor substrate from a second surface opposite to the first surface; a plurality of active regions which are formed between the first surface and the third surface and each of which includes a photoelectric conversion element generating charges in response to light input through the third surface; and an isolation region vertically formed from either of the first and third surfaces to isolate the active regions from one another. When the CMOS image sensor is viewed from the above of the third surface, each of the active regions may have round corners and concave sides.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: March 28, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung Wook Lee, Yi Tae Kim, Jong Eun Park, Jung Chak Ahn, Kyung Ho Lee, Tae Hun Lee, Hee Geun Jeong
  • Patent number: 9609250
    Abstract: Provided are unit pixels for image sensors and pixel arrays including the same. The unit pixels include a first pixel including first and second photo diodes which are adjacent to each other, and a first deep trench isolation (DTI) fully surrounding sides of the first and second photo diodes and electrically separating the first pixel from other pixels adjacent to the first pixel. The first pixel includes a second DTI positioned between the first photo diode and the second photo diode and having one side formed to be spaced apart from the first DTI. The first pixel also includes a color filter positioned on the first and second photo diodes and fully overlapping the first and second photo diodes. The first pixel further includes a floating diffusion node electrically connected with the first and second photo diodes. The first and second photo diodes share one floating diffusion node.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: March 28, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Wook Lee, Yi-Tae Kim, Jung-Chak Ahn, Young-Woo Jung
  • Patent number: 9595556
    Abstract: An image sensor includes a plurality of photoelectric detectors, a plurality of color filters, and at least one pixel isolation region between adjacent ones of the photoelectric detectors. The color filters include a white color filter, and the color filters correspond to respective ones of the photoelectric detectors. The at least one pixel isolation region serves to physically and at least partially optically separate the photoelectric detectors from one another.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: March 14, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Chak Ahn, Bum-Suk Kim
  • Publication number: 20170040364
    Abstract: Image sensors and image processing devices including the image sensors are provided. The image sensors may include a semiconductor substrate including a plurality of pixel areas, a photodiode provided in the semiconductor substrate in one of the plurality of pixel areas and a transfer transistor having a transfer gate electrode. A portion of the transfer gate electrode may be in the semiconductor substrate and may extend toward the photodiode. The image sensors may also include a floating diffusion configured to accumulate charges transferred from the photodiode by the transfer transistor, and the floating diffusion may include a first area and a second area disposed on different sides of the transfer gate electrode.
    Type: Application
    Filed: August 5, 2016
    Publication date: February 9, 2017
    Inventors: Young Sun OH, Jung Chak AHN, Young Woo JUNG
  • Patent number: 9443898
    Abstract: An image sensor includes first pixels and a first source follower transistor, which are disposed adjacent to each other in a first pixel area in a column direction, and second pixels and a second source follower transistor, which are formed in a second pixel area adjacent to the first pixel area in a row direction by the same number of the first pixels, wherein when the first pixels share the first source follower transistor and the second pixels share the second source follower transistor, while pixels selected from the same row are activated, the first source follower transistor and the second source follower transistor being activated are disposed so that locations thereof have a diagonal symmetry.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: September 13, 2016
    Assignee: Samsung Electronics Co. Ltd.
    Inventors: Young-Sun Oh, Yi-Tae Kim, Jung-Chak Ahn, Kyung-Ho Lee, Jun-Suk Lee
  • Patent number: 9420209
    Abstract: A method of generating a pixel array layout for an image sensor (wherein the image sensor includes a plurality of unit pixels, and each of the plurality of unit pixels includes a plurality of transistors) includes forming each unit pixel to include a shallow trench isolation (STI). The STI is between a deep trench isolation (DTI) area and one of a p-well region and source and drain regions of each transistor. The p-well region is below a gate of each of the transistors, and the DTI area is filled with at least two materials.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: August 16, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung Chak Ahn, Hee Geun Jeong
  • Patent number: 9385157
    Abstract: A pixel of an image sensor includes a photoelectric conversion region formed in a semiconductor substrate, a floating diffusion region formed in the semiconductor substrate, the floating diffusion region being spaced apart from the photoelectric conversion region, a vertical transfer gate extending from a first surface of the semiconductor substrate into a recess in the semiconductor substrate, and configured to form a transfer channel between the photoelectric conversion region and the floating diffusion region, and an impurity region surrounding the recess. The impurity region has a first impurity concentration at a region adjacent to a side of the recess, and a second impurity concentration higher than the first impurity concentration at a region adjacent to the bottom of the recess.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: July 5, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Woo Jung, Jung-Chak Ahn, Hee-Geun Jeong