Patents by Inventor Yun-Hwan Jung
Yun-Hwan Jung 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).
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Patent number: 11937476Abstract: A display device comprises a substrate; a circuit array layer comprising pixel drivers, data lines, first dummy lines, and second dummy lines; and a light emitting array layer. The display area comprises middle, first side, and second side regions. The data lines comprise first, second, and third data lines disposed in the middle, first side, and second side regions, respectively. The first dummy lines comprise a first data detour line disposed in the first side region and adjacent to a part of the second data line, and auxiliary lines. The second dummy lines comprise a second data detour line configured to connect the first data detour line to the third data line, and additional lines. The auxiliary lines comprise a bias auxiliary line to which a bias power is applied; and a second power auxiliary line to which a second power is applied.Type: GrantFiled: May 4, 2023Date of Patent: March 19, 2024Assignee: Samsung Display Co., Ltd.Inventors: Jin Sung An, Sung Ho Kim, Yong Jae Kim, Yun Hwan Park, Yoon Jee Shin, Sug Woo Jung, Hyun Wook Choi
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Patent number: 11711635Abstract: An image sensor includes a pixel array including a first pixel and a second pixel which are connected to a first column line, and a row driver configured to control a read operation of the second pixel. A voltage of the first column line is determined based on a higher voltage among a voltage of a floating diffusion node of the first pixel and a voltage of a floating diffusion node of the second pixel during the read operation of the second pixel.Type: GrantFiled: July 9, 2021Date of Patent: July 25, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yun-Hwan Jung, Sun-Yool Kang, Kyung-Min Kim, Hee-Sung Chae, Jae-Seung Han
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Patent number: 11470271Abstract: A pulse generator of an image sensor includes a delay cell including a plurality of transistors arranged in series between a power voltage and a ground, a stabilization capacitor, and a stabilization switch. The power voltage is supplied to a first terminal of a first transistor disposed first among the plurality of transistors, and a gate terminal of the first transistor is connected to a first node. An input voltage is supplied to a gate terminal of an n-th transistor disposed last among the plurality of transistors, and a ground voltage is supplied to a first terminal of the n-th transistor. The stabilization switch is disposed between a reference voltage input terminal providing a reference voltage and the first node. The stabilization switch is turned on by an input bias control signal to supply the reference voltage to the first node.Type: GrantFiled: September 25, 2020Date of Patent: October 11, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyung Tae Kim, Kyung Min Kim, Yun Hwan Jung, Hee Sung Chae
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Patent number: 11233962Abstract: An image sensor includes a pixel array including a pixel array comprising a first pixel and a second pixel which are electrically connected to a first column line, a row driver configured to receive a clamp voltage and a selection voltage, select the first pixel based on the clamp voltage and select the second pixel based on the selection voltage. A voltage of the first column line is determined based on a higher voltage among a first output voltage of the first pixel and a second output voltage of the second pixel during a read operation of the second pixel.Type: GrantFiled: April 9, 2020Date of Patent: January 25, 2022Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yun-Hwan Jung, Sun-Yool Kang, Kyung-Min Kim, Hee-Sung Chae, Jae-Seung Han
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Patent number: 11211920Abstract: A level shifter circuitry is provided. The level shifter circuitry includes a first sub-circuit connected to a first power supply voltage, a second sub-circuit connected to a second power supply voltage and a shifting circuit which is connected to the first and second sub-circuits and outputs the first power supply voltage or the second power supply voltage to an output terminal or an inverted output terminal in response to a signal applied to an input node in accordance with an enable signal.Type: GrantFiled: September 30, 2020Date of Patent: December 28, 2021Assignee: Samsung Electronics Co., Ltd.Inventors: Jae Seung Han, Kyung-Min Kim, Hae Sick Sul, Yun Hwan Jung
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Publication number: 20210337154Abstract: An image sensor includes a pixel array including a first pixel and a second pixel which are connected to a first column line, and a row driver configured to control a read operation of the second pixel. A voltage of the first column line is determined based on a higher voltage among a voltage of a floating diffusion node of the first pixel and a voltage of a floating diffusion node of the second pixel during the read operation of the second pixel.Type: ApplicationFiled: July 9, 2021Publication date: October 28, 2021Inventors: YUN-HWAN JUNG, SUN-YOOL KANG, KYUNG-MIN KIM, HEE-SUNG CHAE, JAE-SEUNG HAN
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Publication number: 20210250020Abstract: A level shifter circuitry is provided. The level shifter circuitry includes a first sub-circuit connected to a first power supply voltage, a second sub-circuit connected to a second power supply voltage and a shifting circuit which is connected to the first and second sub-circuits and outputs the first power supply voltage or the second power supply voltage to an output terminal or an inverted output terminal in response to a signal applied to an input node in accordance with an enable signal.Type: ApplicationFiled: September 30, 2020Publication date: August 12, 2021Applicant: Samsung Electronics Co., Ltd.Inventors: Jae Seung HAN, Kyung-Min KIM, Hae Sick SUL, Yun Hwan JUNG
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Patent number: 11082653Abstract: An image sensor includes a pixel array including a first pixel and a second pixel which are connected to a first column line, and a row driver configured to control a read operation of the second pixel. A voltage of the first column line is determined based on a higher voltage among a voltage of a floating diffusion node of the first pixel and a voltage of a floating diffusion node of the second pixel during the read operation of the second pixel.Type: GrantFiled: June 19, 2019Date of Patent: August 3, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yun-Hwan Jung, Sun-Yool Kang, Kyung-Min Kim, Hee-Sung Chae, Jae-Seung Han
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Patent number: 11070182Abstract: An image sensor and an operating method of the image sensor are provided. An image sensor includes a pixel array including a plurality of pixels, a ramp signal generator configured to generate a first ramp signal, a buffer including an amplifier of a super source follower structure and outputting a second ramp signal obtained by buffering the first ramp signal, and an analog-to-digital conversion circuit configured to compare a pixel signal output from the pixel array with the second ramp signal and converting the pixel signal to a pixel value.Type: GrantFiled: August 14, 2019Date of Patent: July 20, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yun-hwan Jung, Sun-yool Kang, Hee-sung Chae
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Patent number: 10986298Abstract: A correlated double sampling (CDS) circuit including a comparator, the comparator including: a signal input unit including a first transistor configured to receive a ramp signal and a second transistor configured to receive a pixel signal; and an offset generator unit connected to the signal input unit, the offset generator unit including at least two transistors, wherein in the offset generator unit, an aspect ratio of the at least two transistors in an auto-zeroing period and an aspect ratio of the at least two transistors in a pixel signal decoding period are different from each other.Type: GrantFiled: October 18, 2019Date of Patent: April 20, 2021Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yun Hwan Jung, Sun Yool Kang, Kyung Tae Kim, Hee Sung Chae
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Publication number: 20210044297Abstract: An image sensor includes a shifting circuit shifting a first voltage that is applied to a first node, to a second voltage, and shifting the second voltage that is applied to a second node, to the first voltage, and a sub-circuit providing the first voltage to the shifting circuit. The image sensor further includes a source circuit enabling the sub-circuit to provide the first voltage to the shifting circuit, and an enable transistor that is gated by an enable signal, and enables the shifting circuit by providing the second voltage to the shifting circuit, based on the enable signal.Type: ApplicationFiled: March 16, 2020Publication date: February 11, 2021Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae Seung Han, Yun Hwan Jung, Jae Young Bae, Suk Ki Yoon
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Publication number: 20210014437Abstract: A pulse generator of an image sensor includes a delay cell including a plurality of transistors arranged in series between a power voltage and a ground, a stabilization capacitor, and a stabilization switch. The power voltage is supplied to a first terminal of a first transistor disposed first among the plurality of transistors, and a gate terminal of the first transistor is connected to a first node. An input voltage is supplied to a gate terminal of an n-th transistor disposed last among the plurality of transistors, and a ground voltage is supplied to a first terminal of the n-th transistor. The stabilization switch is disposed between a reference voltage input terminal providing a reference voltage and the first node. The stabilization switch is turned on by an input bias control signal to supply the reference voltage to the first node.Type: ApplicationFiled: September 25, 2020Publication date: January 14, 2021Inventors: KYUNG TAE KIM, KYUNG MIN KIM, YUN HWAN JUNG, HEE SUNG CHAE
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Patent number: 10812741Abstract: A pulse generator of an image sensor includes a delay cell including a plurality of transistors arranged in series between a power voltage and a ground, a stabilization capacitor, and a stabilization switch. The power voltage is supplied to a first terminal of a first transistor disposed first among the plurality of transistors, and a gate terminal of the first transistor is connected to a first node. An input voltage is supplied to a gate terminal of an n-th transistor disposed last among the plurality of transistors, and a ground voltage is supplied to a first terminal of the n-th transistor. The stabilization switch is disposed between a reference voltage input terminal providing a reference voltage and the first node. The stabilization switch is turned on by an input bias control signal to supply the reference voltage to the first node.Type: GrantFiled: August 16, 2019Date of Patent: October 20, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyung Tae Kim, Kyung Min Kim, Yun Hwan Jung, Hee Sung Chae
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Publication number: 20200266785Abstract: An image sensor and an operating method of the image sensor are provided. An image sensor includes a pixel array including a plurality of pixels, a ramp signal generator configured to generate a first ramp signal, a buffer including an amplifier of a super source follower structure and outputting a second ramp signal obtained by buffering the first ramp signal, and an analog-to-digital conversion circuit configured to compare a pixel signal output from the pixel array with the second ramp signal and converting the pixel signal to a pixel value.Type: ApplicationFiled: August 14, 2019Publication date: August 20, 2020Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yun-hwan JUNG, Sun-yool KANG, Hee-sung CHAE
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Publication number: 20200260024Abstract: A pulse generator of an image sensor includes a delay cell including a plurality of transistors arranged in series between a power voltage and a ground, a stabilization capacitor, and a stabilization switch. The power voltage is supplied to a first terminal of a first transistor disposed first among the plurality of transistors, and a gate terminal of the first transistor is connected to a first node. An input voltage is supplied to a gate terminal of an n-th transistor disposed last among the plurality of transistors, and a ground voltage is supplied to a first terminal of the n-th transistor. The stabilization switch is disposed between a reference voltage input terminal providing a reference voltage and the first node. The stabilization switch is turned on by an input bias control signal to supply the reference voltage to the first node.Type: ApplicationFiled: August 16, 2019Publication date: August 13, 2020Inventors: Kyung Tae KIM, Kyung Min KIM, Yun Hwan JUNG, Hee Sung CHAE
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Publication number: 20200260036Abstract: A correlated double sampling (CDS) circuit including a comparator, the comparator including: a signal input unit including a first transistor configured to receive a ramp signal and a second transistor configured to receive a pixel signal; and an offset generator unit connected to the signal input unit, the offset generator unit including at least two transistors, wherein in the offset generator unit, an aspect ratio of the at least two transistors in an auto-zeroing period and an aspect ratio of the at least two transistors in a pixel signal decoding period are different from each other.Type: ApplicationFiled: October 18, 2019Publication date: August 13, 2020Inventors: Yun Hwan Jung, Sun Yool Kang, Kyung Tae Kim, Hee Sung Chae
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Publication number: 20200244913Abstract: An image sensor includes a pixel array including a pixel array comprising a first pixel and a second pixel which are electrically connected to a first column line, a row driver configured to receive a clamp voltage and a selection voltage, select the first pixel based on the clamp voltage and select the second pixel based on the selection voltage. A voltage of the first column line is determined based on a higher voltage among a first output voltage of the first pixel and a second output voltage of the second pixel during a read operation of the second pixel.Type: ApplicationFiled: April 9, 2020Publication date: July 30, 2020Inventors: YUN-HWAN JUNG, SUN-YOOL KANG, KYUNG-MIN KIM, HEE-SUNG CHAE, JAE-SEUNG HAN
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Patent number: 10616518Abstract: An analog-to-digital conversion circuit includes a first amplifier that generates a first output signal by comparing a pixel signal output from a pixel array with a ramp signal, and a second amplifier that generates a comparison signal based on the first output signal. The first amplifier includes a first current source that generates a first bias current in a first operation period and a second operation period, and a second current source that generates a second bias current in the first operation period. The analog-to-digital conversion circuit converts an analog signal output from the pixel array into a digital signal.Type: GrantFiled: June 14, 2018Date of Patent: April 7, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yun-Hwan Jung, Sun-Yool Kang
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Publication number: 20200007808Abstract: An image sensor includes a pixel array including a first pixel and a second pixel which are connected to a first column line, and a row driver configured to control a read operation of the second pixel. A voltage of the first column line is determined based on a higher voltage among a voltage of a floating diffusion node of the first pixel and a voltage of a floating diffusion node of the second pixel during the read operation of the second pixel.Type: ApplicationFiled: June 19, 2019Publication date: January 2, 2020Inventors: YUN-HWAN JUNG, SUN-YOOL KANG, KYUNG-MIN KIM, HEE-SUNG CHAE, JAE-SEUNG HAN
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Publication number: 20190116331Abstract: An analog-to-digital conversion circuit includes a first amplifier that generates a first output signal by comparing a pixel signal output from a pixel array with a ramp signal, and a second amplifier that generates a comparison signal based on the first output signal. The first amplifier includes a first current source that generates a first bias current in a first operation period and a second operation period, and a second current source that generates a second bias current in the first operation period. The analog-to-digital conversion circuit converts an analog signal output from the pixel array into a digital signal.Type: ApplicationFiled: June 14, 2018Publication date: April 18, 2019Inventors: Yun-Hwan JUNG, Sun-Yool KANG