Patents by Inventor Se Hyuk AN

Se Hyuk AN 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: 10885824
    Abstract: Embodiments of the present disclosure relate to a display driving device and a display device including the same. The display driving device includes a source driving circuit configured to convert image data of respective channels into source signals; a polarity control circuit configured to receive polarity data for the respective channels, and generate a polarity control signal for controlling polarities of the source signals depending on a logic combination of the polarity data; and a multiplexer circuit configured to output the source signals to data lines in response to the polarity control signal.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: January 5, 2021
    Assignee: Silicon Works Co., Ltd.
    Inventors: Hyun Woo Jeong, Kwang Myoung Kang, Yong Min Kim, Ha Na Choi, Da Sol Won, Se Hyuk An
  • Publication number: 20200372853
    Abstract: A display device includes a display unit. The display unit includes a first display area and a second display area. A first scan line, a first power line, and first pixels connected to the first scan line and the first power line are in the first display area. A second scan line, a second power line, and second pixels connected to the second scan line and the second power line are in the second display area. A scan driver is configured to sequentially provide a scan signal to the first scan line and the second scan line. A power supply is configured to provide a power source voltage that is varied independently to the first power line and the second power line.
    Type: Application
    Filed: February 18, 2020
    Publication date: November 26, 2020
    Inventors: Se Hyuk PARK, Hyo Jin LEE, Sang An KWON, Jin Young ROH
  • Patent number: 10841304
    Abstract: A device-to-device (D2D) communication method is provided. According to an inventive concept, the method comprises, storing, by a first device, first authentication data including a hash chain, which is a sequential concatenation of hash values, and storing, by a second device, second authentication data including an initial hash value of the hash chain, transmitting, by the first device, a final hash value of the hash chain to the second device, determining, by the second device, whether authentication between the first and second devices has succeeded by repeatedly hashing the initial hash value stored in the second device until a hash value identical to the final hash value is returned, and if a determination is made that authentication between the first and second devices has succeeded, performing, by the first and second devices, a connection establishment process for establishing a connection between the first and second devices.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: November 17, 2020
    Assignee: SAMSUNG SDS CO., LTD.
    Inventors: Do Hyoung Kim, Soon Hyoung Hwang, Se Hyuk Noh, Nam Soo Jeon, Won Kyoung Kim, Jae Sung Jeong, Mi Ran Kim, Joo Hee Choi
  • Publication number: 20200294451
    Abstract: A method of driving a pixel including: during a first period of a first frame, applying a first scan signal having a turn-on level to the first scan line, applying a data voltage to a data line, and applying a second scan signal having the turn-on level to the second scan line; and during a second period of a second frame, applying the first scan signal having the turn-on level to the first scan line, applying a bias voltage to the data line, and applying the second scan signal having a turn-off level to the second scan line, the second frame is a frame subsequent to the first frame, the second period is longer than the first period, and a light-emitting diode emits light at luminance based on the data voltage during at least a portion of the first frame and at least a portion of the second frame.
    Type: Application
    Filed: March 12, 2020
    Publication date: September 17, 2020
    Inventors: Ji Woong Kim, Oh Jo Kwon, Hyo Jin Lee, Se Hyuk Park
  • Patent number: 10770001
    Abstract: A flicker quantification system includes a display device driven in units of reference periods having a first frame for writing data and at least one second frame for holding data. A luminance measurer generates luminance data by measuring a luminance of a display during the reference period. A voltage measurer measures a voltage of a photo sensor corresponding to light emitted. First voltage data representing an accumulation amount of voltage during the first frame and second voltage data representing an accumulation amount of voltage during the at least one second frame is generated. A processor calculates a flicker index value representing a ratio of a measured luminance difference to a just noticeable difference, based on the luminance data, the first voltage data, and the second voltage data. The measured luminance difference may represent the difference between a luminance during the first frame and a luminance during the second frame.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: September 8, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se Hyuk Park, Hui Nam, Hyo Jin Lee
  • Publication number: 20200234632
    Abstract: A pixel includes: a first transistor configured to generate a driving current corresponding to a data signal transmitted from a corresponding data line; a first light emitting diode (LED) including a cathode connected to a first power supply line and an anode connected to a second power supply line, and configured to emit light by the driving current; a second light emitting diode (LED) including a cathode connected to the second power supply line and an anode connected to the first power supply line, and configured to emit light by the driving current; a second transistor connected to the anode of the first light emitting diode (LED), and configured to transmit the driving current to the first light emitting diode (LED); and a third transistor connected to the anode of the second light emitting diode (LED), and configured to transmit the driving current to the second light emitting diode (LED.
    Type: Application
    Filed: April 6, 2020
    Publication date: July 23, 2020
    Inventors: Hyo Jin Lee, Se Hyuk Park
  • Patent number: 10614761
    Abstract: A pixel includes: a first transistor configured generate a driving current corresponding to a data signal transmitted from a corresponding data line; a first light emitting diode (LED) including a cathode connected to a first power supply line and an anode connected to a second power supply line, and configured to emit light by the driving current; a second light emitting diode (LED) including a cathode connected to the second power supply line and an anode connected to the first power supply line, and configured to emit light by the driving current; a second transistor connected to the anode of the first light emitting diode (LED), and configured to transmit the driving current to the first light emitting diode (LED); and a third transistor connected to the anode of the second light emitting diode (LED), and configured to transmit the driving current to the second light emitting diode (LED.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: April 7, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyo Jin Lee, Se Hyuk Park
  • Publication number: 20200105198
    Abstract: A flicker quantification system includes a display device driven in units of reference periods having a first frame for writing data and at least one second frame for holding data. A luminance measurer generates luminance data by measuring a luminance of a display during the reference period. A voltage measurer measures a voltage of a photo sensor corresponding to light emitted. First voltage data representing an accumulation amount of voltage during the first frame and second voltage data representing an accumulation amount of voltage during the at least one second frame is generated. A processor calculates a flicker index value representing a ratio of a measured luminance difference to a just noticeable difference, based on the luminance data, the first voltage data, and the second voltage data. The measured luminance difference may represent the difference between a luminance during the first frame and a luminance during the second frame.
    Type: Application
    Filed: August 15, 2019
    Publication date: April 2, 2020
    Inventors: Se Hyuk PARK, Hui NAM, Hyo Jin LEE
  • Patent number: 10522216
    Abstract: Disclosed is a static random access memory including an assist circuit. More particularly, a static random access memory according to an embodiment of the present disclosure may include a bit cell part including at least one bit cell connected between a first ground voltage node and a second ground voltage node; and a controller including a first transistor configured to control connection between the first ground voltage node and the second ground voltage node, a second transistor configured to float a first ground voltage of the first ground voltage node, and a third transistor configured to float a second ground voltage of the second ground voltage node, wherein the controller controls the first and second ground voltages supplied to the bit cell part using the first, second, and third transistors.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: December 31, 2019
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Seong Ook Jung, Se Hyuk Oh, Han Wool Jeong, Ju Hyun Park
  • Publication number: 20190385504
    Abstract: Embodiments of the present disclosure relate to a display driving device and a display device including the same. The display driving device includes a source driving circuit configured to convert image data of respective channels into source signals; a polarity control circuit configured to receive polarity data for the respective channels, and generate a polarity control signal for controlling polarities of the source signals depending on a logic combination of the polarity data; and a multiplexer circuit configured to output the source signals to data lines in response to the polarity control signal.
    Type: Application
    Filed: June 13, 2019
    Publication date: December 19, 2019
    Applicant: SILICON WORKS CO., LTD.
    Inventors: Hyun Woo JEONG, Kwang Myoung KANG, Yong Min KIM, Ha Na CHOI, Da Sol WON, Se Hyuk AN
  • Publication number: 20190378458
    Abstract: A driving device includes: an output unit configured to supply a first voltage, or a second voltage lower than the first voltage, to an output terminal in response to a voltage of a first node and a voltage of a second node; a first driver configured to control the voltage of the second node in response to a signal of a first input terminal and a signal of a second input terminal; a second driver configured to control the voltage of the first node in response to a voltage of a third input terminal and the voltage of the second node; and a first transistor configured to apply a third voltage lower than the first voltage to the first node or the second node.
    Type: Application
    Filed: March 12, 2019
    Publication date: December 12, 2019
    Inventors: Hyo Jin LEE, Hui NAM, Se Hyuk PARK
  • Publication number: 20190332021
    Abstract: A system and method of imprinting a formable material on a substrate includes a feature with a template. The substrate is initially held with a first back pressure. After which the template is brought into contact with the formable material. A template strain tensor above the feature may be greater than a strain threshold. The substrate is then held with a second back pressure less than the first back pressure, after which the substrate strain below the feature increases. After which the formable material is solidified.
    Type: Application
    Filed: April 30, 2018
    Publication date: October 31, 2019
    Inventors: Byung-Jin Choi, Se-Hyuk Im
  • Publication number: 20190312835
    Abstract: A message server and a message processing apparatus including the same are provided. According to the embodiments of the present disclosure, when the device management module is not available to be used, a message is directly delivered to the application client through the third party message server so that the reliability of the message forwarded between a sender side and a receiver side can be ensured.
    Type: Application
    Filed: March 27, 2019
    Publication date: October 10, 2019
    Applicant: SAMSUNG SDS CO., LTD.
    Inventors: Eun-su Jang, Kyung-Rae Jang, Min-Jung Choi, Min-kyu Jung, Ha-Jin Park, Hyo-Joong Lee, Hyun-Myung Jung, Se-Hyuk Noh, Soon-Hyoung Hwang
  • Publication number: 20190204670
    Abstract: A display device includes a first pixel including a first light emitting diode (“LED”) and a second LED having a color different from that of the first LED, a second pixel including a third LED having a same color as that of the first LED, a third pixel including a fourth LED having a same color as that of the first LED, and a color filter layer including a first color filter located on the first pixel, a second color filter that has a color different from a color of the first color filter and is located on the second pixel, and a third color filter that has a color different from the colors of the first and second color filters and is located on the third pixel.
    Type: Application
    Filed: July 10, 2018
    Publication date: July 4, 2019
    Inventors: Se Hyuk PARK, Hyo Jin LEE
  • Publication number: 20190156733
    Abstract: A display device includes a first switching element including a second electrode and a first gate electrode, a second switching element including a third electrode connected with the first gate electrode, a third switching element including a fifth electrode connected with the second electrode, and sixth electrode, a fourth switching element including a seventh electrode connected with the second electrode, and an eighth electrode, a fifth switching element including a ninth electrode connected with the second electrode, and a tenth electrode, a first light emitting diode connected with the sixth electrode and the eighth electrode, a second light emitting diode connected with the eighth electrode and the sixth electrode, and a switch selectively connecting a common power source line with the sixth electrode or the eighth electrode. The first light emitting diode and the second light emitting diode have different polarities from each other with respect to a same direction.
    Type: Application
    Filed: May 16, 2018
    Publication date: May 23, 2019
    Inventors: Se Hyuk PARK, Hyo Jin LEE
  • Publication number: 20190098006
    Abstract: A device-to-device (D2D) communication method is provided. According to an inventive concept, the method comprises, storing, by a first device, first authentication data including a hash chain, which is a sequential concatenation of hash values, and storing, by a second device, second authentication data including an initial hash value of the hash chain, transmitting, by the first device, a final hash value of the hash chain to the second device, determining, by the second device, whether authentication between the first and second devices has succeeded by repeatedly hashing the initial hash value stored in the second device until a hash value identical to the final hash value is returned, and if a determination is made that authentication between the first and second devices has succeeded, performing, by the first and second devices, a connection establishment process for establishing a connection between the first and second devices.
    Type: Application
    Filed: August 1, 2018
    Publication date: March 28, 2019
    Applicant: SAMSUNG SDS CO., LTD.
    Inventors: Do Hyoung KIM, Soon Hyoung HWANG, Se Hyuk NOH, Nam Soo JEON, Won Kyoung KIM, Jae Sung JEONG, Mi Ran KIM, Joo Hee CHOI
  • Patent number: 10242633
    Abstract: A display panel includes gate lines, data lines, and pixels. The gate lines extend in a first direction and include first and second gate lines adjacent to each other. The data lines extend in a second direction crossing the first direction and include first to third data lines. Each of the pixels is connected to one of the gate lines and one of the data lines. The first data line is connected to at least a first any one of a second plurality of pixels in a first pixel column of the pixels. The second data line is connected to at least a first any one of a first plurality of pixels in the first pixel column. The third data line is connected to at least a second any one of the first plurality of pixels and at least a second any one of the second plurality of pixels.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: March 26, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Se-Hyuk Park, Byung-Sun Kim, Cheol-Woo Park, Jae-Hyun Cho, Bon-Seog Gu, Hong-Soo Kim
  • Publication number: 20190061228
    Abstract: Control of lateral strain and lateral strain ratio (dt/db) between template and substrate through the selection of template and/or substrate thicknesses (Tt and/or Tb), control of template and/or substrate back pressure (Pt and/or Pb), and/or selection of material stiffness are described.
    Type: Application
    Filed: October 30, 2018
    Publication date: February 28, 2019
    Inventors: Se-Hyuk Im, Mahadevan GanapathiSubramanian, Edward Brian Fletcher, Niyaz Khusnatdinov, Gerard M. Schmid, Mario Johannes Meissl, Anshuman Cherala, Frank Y. Xu, Byung Jin Choi, Sidlgata V. Sreenivasan
  • Publication number: 20190051242
    Abstract: A pixel includes: a first transistor configured generate a driving current corresponding to a data signal transmitted from a corresponding data line; a first light emitting diode (LED) including a cathode connected to a first power supply line and an anode connected to a second power supply line, and configured to emit light by the driving current; a second light emitting diode (LED) including a cathode connected to the second power supply line and an anode connected to the first power supply line, and configured to emit light by the driving current; a second transistor connected to the anode of the first light emitting diode (LED), and configured to transmit the driving current to the first light emitting diode (LED); and a third transistor connected to the anode of the second light emitting diode (LED), and configured to transmit the driving current to the second light emitting diode (LED.
    Type: Application
    Filed: January 12, 2018
    Publication date: February 14, 2019
    Inventors: Hyo Jin Lee, Se Hyuk Park
  • Publication number: 20190027213
    Abstract: Disclosed is a static random access memory including an assist circuit. More particularly, a static random access memory according to an embodiment of the present disclosure may include a bit cell part including at least one bit cell connected between a first ground voltage node and a second ground voltage node; and a controller including a first transistor configured to control connection between the first ground voltage node and the second ground voltage node, a second transistor configured to float a first ground voltage of the first ground voltage node, and a third transistor configured to float a second ground voltage of the second ground voltage node, wherein the controller controls the first and second ground voltages supplied to the bit cell part using the first, second, and third transistors.
    Type: Application
    Filed: July 18, 2018
    Publication date: January 24, 2019
    Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI U NIVERSITY
    Inventors: Seong Ook JUNG, Se Hyuk OH, Han Wool JEONG, Ju Hyun PARK