Patents by Inventor Yong-joo Kwon

Yong-joo Kwon 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: 11572504
    Abstract: A core-shell quantum dot comprising zinc, a core comprising a first semiconductor nanocrystal material; and a semiconductor nanocrystal shell disposed on the core, wherein the core-shell quantum dot does not comprise cadmium, and does comprise zinc, tellurium, selenium, and aluminum.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: February 7, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ji-Yeong Kim, Soo Kyung Kwon, Seon-Yeong Kim, Yong Wook Kim, Eun Joo Jang
  • Publication number: 20230029597
    Abstract: A display panel includes a light emitting panel including a light emitting unit; and a color conversion panel. The color conversion panel includes a color conversion layer including a color conversion region including semiconductor nanoparticles, and a partition wall defining the color conversion region. An optical diffuser is between the light emitting unit and the color conversion region to cover a light extraction surface of the light emitting unit. A length of the light extraction surface of the light emitting unit is greater than or equal to about 500 nm and less than or equal to about 100 ?m and a ratio of a length of the optical diffuser to the length of the light extraction surface of the light emitting unit is greater than or equal to about 1.4:1 and less than or equal to about 60:1.
    Type: Application
    Filed: July 27, 2022
    Publication date: February 2, 2023
    Inventors: Yong Wook KIM, Eun Joo JANG, Soo Kyung KWON, Seon-Yeong KIM, Ji-Yeong KIM, Sungwoo HWANG
  • Publication number: 20230000405
    Abstract: An apparatus for estimating bio-information includes: an impedance sensor including a pair of input electrodes and a pair of receiving electrodes, and configured to measure bio-impedance of a user by applying a current to the pair of input electrodes and by measuring a voltage between the pair of receiving electrodes; and a processor configured to estimate bio-information by applying, to the measured bio-impedance, an estimation model that uses a correlation between the measured bio-impedance and the bio-information to be estimated.
    Type: Application
    Filed: April 21, 2022
    Publication date: January 5, 2023
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yeol Ho LEE, Joon Hyung Lee, Yong Joo Kwon, Yun S Park
  • Publication number: 20230000446
    Abstract: An apparatus for estimating lipid concentration is provided. According to an example embodiment, the apparatus may include a training data collector configured to collect, as training data, a reference lipid concentration measured through blood samples of a plurality of users for a predetermined time period and sensor data obtained through light signals detected from the plurality of users for the predetermined time period and a processor configured to perform preprocessing including a moving average and data augmentation on the obtained sensor data, select a valid variable relevant to a change in lipid concentration based on the preprocessed sensor data and the reference lipid concentration, and generate a lipid concentration prediction model based on the selected valid variable.
    Type: Application
    Filed: September 30, 2021
    Publication date: January 5, 2023
    Applicants: SAMSUNG ELECTRONICS CO., LTD., Korea University Research and Business Foundation
    Inventors: Yun S PARK, Seoung Bum KIM, Yong Joo KWON, Mingu KWAK, Yoon Sang CHO, Chunghyup MOK, Yeol Ho LEE, Joon Hyung LEE, Kee Won JEONG, Jinsoo BAE
  • Patent number: 11538846
    Abstract: A display includes a display portion formed of an array of unit pixels that each respectively include a light source pixel and a detector pixel. The display includes a control driver including a light source driver and a data driver which are respectively connected to each light source pixel, and a detector driver which is connected to each detector pixel. The display includes a controller configured to control the control driver to operate the display portion in a first mode, a second mode, and a third mode that are each different from each other.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: December 27, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong Joo Kwon, Jae Min Kang, Byung Hoon Ko, Youn Ho Kim, Sang Yun Park, Jong Wook Lee, Deuk Seok Chung
  • Patent number: 11538272
    Abstract: An apparatus for measuring a signal is provided. The apparatus for measuring a signal may include a sensor configured to generate pixel data representing a fingerprint image of an object by detecting light scattered or reflected from the object and a processor configured to acquire the fingerprint image of the object based on the pixel data and acquire a pulse wave signal based on the fingerprint image and the pixel data.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: December 27, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Min Kang, Yong Joo Kwon, Sang Yun Park
  • Patent number: 11525083
    Abstract: A quantum dot comprising zinc, tellurium, and selenium and not comprising cadmium, wherein a maximum luminescent peak of the quantum dot is present in a wavelength range of greater than about 470 nanometers (nm) and a quantum efficiency of the quantum dot is greater than or equal to about 10%, and wherein the quantum dot comprises a core comprising a first semiconductor nanocrystal and a semiconductor nanocrystal shell disposed on the core.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: December 13, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Soo Kyung Kwon, Seon-Yeong Kim, Yong Wook Kim, Ji-Yeong Kim, Eun Joo Jang
  • Patent number: 11517206
    Abstract: According to one aspect of the present disclosure, an electronic device may include: a communication interface configured to receive, from a touch pen, force information about a force of the touch pen exerted onto an object when the object is in contact with the touch pen; a pulse wave measurer configured to measure a pulse wave of the object when the object is brought into contact with the electronic device by the force of the touch pen; and a processor configured to estimate a blood pressure of the object based on the force information and the pulse wave.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: December 6, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Yun Park, Jae Min Kang, Yong Joo Kwon
  • Patent number: 11520375
    Abstract: Provided are foldable electronic device and method for estimating bio-information by using the same. The foldable electronic device may include: a main body part including a first main body and a second main body that are configured to be folded toward each other or unfolded from each other along a fold line where the first main body and the second main body meet; an image sensor part including a first image sensor and a second image sensor which are disposed at the first main body; and a processor configured to obtain a contact image of an object from the first image sensor disposed at the first main body and obtain an image of a marker that is displayed on the second main body, from the second image sensor disposed at the first main body, when the object is in contact with the first image sensor and the main body part is folded along the fold line, and estimate bio-information based on the contact image of the object and the image of the marker.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: December 6, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Min Kang, Yong Joo Kwon, Sang Yun Park
  • Patent number: 11505740
    Abstract: A cadmium free quantum dot not including cadmium and including: a semiconductor nanocrystal core comprising indium and phosphorous, a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core and comprising zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell and comprising zinc and sulfur, a composition and composite including the same, and an electronic device.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: November 22, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yuho Won, Nayoun Won, Sungwoo Hwang, Eun Joo Jang, Soo Kyung Kwon, Yong Wook Kim, Jihyun Min, Garam Park, Shang Hyeun Park, Hyo Sook Jang, Shin Ae Jun, Yong Seok Han
  • Patent number: 11492549
    Abstract: A quantum dot comprising zinc, tellurium, and selenium and not comprising cadmium, wherein a maximum luminescent peak of the quantum dot is present in a wavelength range of greater than about 470 nanometers (nm) and a quantum efficiency of the quantum dot is greater than or equal to about 10%, and wherein the quantum dot comprises a core comprising a first semiconductor nanocrystal and a semiconductor nanocrystal shell disposed on the core.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: November 8, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Soo Kyung Kwon, Seon-Yeong Kim, Yong Wook Kim, Ji-Yeong Kim, Eun Joo Jang
  • Patent number: 11478157
    Abstract: Disclosed is an apparatus for estimating bio-information. The apparatus for estimating bio-information includes: a sensor part comprising a pulse wave sensor array configured to detect a pulse wave signal when an object contacts a contact surface of the sensor part, and a load sensor configured to detect a first contact load applied by the object to the contact surface; and a processor configured to obtain contact load distribution of the contact surface based on the pulse wave signal, and to estimate bio-information based on the contact load distribution.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: October 25, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong Joo Kwon, Jae Min Kang, Sang Yun Park, Youn Ho Kim
  • Publication number: 20220330841
    Abstract: A blood pressure measuring apparatus according to an aspect of the present invention includes: a touch sensor; a pulse wave measurer configured to measure pulse waves from a user; a contact force measurer including at least three force sensors and configured to measure a contact force between the touch sensor and the user by using the at least three force sensors; a contact area measurer configured to measure a contact area between the user and the touch sensor; and a processor configured to determine a vertical direction error, which indicates a degree of deviation of a direction of force, applied by the user to press the touch sensor, from a vertical direction to a surface of the touch sensor based on sensor values sensed by the at least three force sensors, and estimate blood pressure according to a determination result of the vertical direction error based on the pulse waves, the contact force, and the contact area.
    Type: Application
    Filed: June 22, 2022
    Publication date: October 20, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Yun PARK, Jae Min KANG, Yong Joo KWON, Youn Ho KIM
  • Publication number: 20220304583
    Abstract: A blood pressure measuring apparatus, may include: a touch sensor; a pulse wave measurer configured to measure pulse waves from a user's finger when the user's finger is in contact with the touch sensor; a contact pressure measurer configured to measure a contact pressure between the user's finger and the touch sensor; a fingerprint recognizer configured to recognize a fingerprint of the user's finger; and a processor configured to determine a degree of position coincidence between the user's finger and the pulse wave measurer based on the recognized fingerprint, and to estimate a blood pressure of the user based on the pulse waves and the contact pressure according to the determined degree of position coincidence.
    Type: Application
    Filed: June 15, 2022
    Publication date: September 29, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Yun PARK, Jae Min Kang, Yong Joo Kwon, Youn Ho Kim
  • Publication number: 20220272131
    Abstract: According to an aspect of the present disclosure, a method for generating a record of a telemedicine service in a video call between at least two terminal devices is disclosed. The method includes obtaining authentication information of a user authorized to use the telemedicine service, receiving a sound stream of the video call from a terminal device of the at least two terminal devices, detecting a voice signal from the sound stream, verifying whether the voice signal is indicative of the user based on the authentication information, upon verifying that the voice signal is indicative of the user, continuing the video call to generate the record of the telemedicine service, and upon verifying that the voice signal is not indicative of the user, interrupting the video call.
    Type: Application
    Filed: September 4, 2020
    Publication date: August 25, 2022
    Inventors: Ha Rin Jun, Yong-Sik Kim, Soon Yong Kwon, Gyoungdon Joo, Byeongjin Kang, Donghyun Park, Dohyun Kim
  • Publication number: 20220265149
    Abstract: An apparatus for measuring bio-signals is provided. According to an example embodiment, the apparatus for measuring bio-signals includes: a light source configured to emit light onto an object; an image sensor including: a pixel array configured to detect the light emitted by the light source and reacted by the object and a pixel binning unit configured to bin data of the light, detected by the pixel array, by using at least two different binning sizes; and a processor configured to acquire a plurality of bio-signals respectively based on data of the at least two different binning sizes, which are output from the image sensor.
    Type: Application
    Filed: June 22, 2021
    Publication date: August 25, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong Wook LEE, Byung Hoon Ko, Yong Joo Kwon, Seung Woo Noh, Hyun Seok Moon, Sung Mo Ahn, Kun Sun Eom, Tak Hyung Lee, Myoung Hoon Jung, Chang Mok Choi
  • Patent number: 11419562
    Abstract: A bio-information measuring apparatus includes: a pulse wave measurer configured to measure a plurality of pulse wave signals from an object; a contact pressure measurer configured to measure contact a pressure between the object and the pulse wave measurer; and a processor configured to obtain a plurality of first envelopes based on the contact pressure and the plurality of pulse wave signals, obtain a second envelope by combining the plurality of first envelopes, and measure bio-information based on the second envelope.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: August 23, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Min Kang, Yong Joo Kwon, Sang Yun Park
  • Patent number: 11419507
    Abstract: A bio-information estimating apparatus includes a sensor part configured to measure a pulse wave signal from an object, a contact force that is applied by the object to the sensor part, and a contact area of the object that is applied to the sensor part, and a processor configured to obtain a first feature value, based on a first change in the contact area with respect to a second change in the contact force, obtain a second feature value, based on the pulse wave signal, and estimate bio-information, based on the first feature value and the second feature value.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: August 23, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Min Kang, Yong Joo Kwon, Youn Ho Kim, Sang Yun Park
  • Patent number: 11382520
    Abstract: A blood pressure measuring apparatus according to an aspect of the present invention includes: a touch sensor; a pulse wave measurer configured to measure pulse waves from a user; a contact force measurer including at least three force sensors and configured to measure a contact force between the touch sensor and the user by using the at least three force sensors; a contact area measurer configured to measure a contact area between the user and the touch sensor; and a processor configured to determine a vertical direction error, which indicates a degree of deviation of a direction of force, applied by the user to press the touch sensor, from a vertical direction to a surface of the touch sensor based on sensor values sensed by the at least three force sensors, and estimate blood pressure according to a determination result of the vertical direction error based on the pulse waves, the contact force, and the contact area.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: July 12, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Yun Park, Jae Min Kang, Yong Joo Kwon, Youn Ho Kim
  • Patent number: D967826
    Type: Grant
    Filed: February 28, 2022
    Date of Patent: October 25, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ho Jung Lee, Kyung Hyun Ko, Yong Woo Koo, Jun Il Kwon, Pablo Kim, Young-Su Kim, Jun Woo Kim, Hoon Kim, Hye Suk An, Hyun Joo Lee, Ki Ho Lim