Patents by Inventor Keum-Nam Kim

Keum-Nam Kim 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: 10372085
    Abstract: A display device includes a substrate having a through-hole. The display device also includes a display unit formed on the substrate and surrounding the through-hole, and the display unit is configured to display an image and includes pixels.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: August 6, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ki Nyeng Kang, Keum Nam Kim, Jong Hyun Choi
  • Publication number: 20190138123
    Abstract: A fingerprint sensor including first, second, and third lines, and a unit sensor coupled to the first, the second, and the third lines. The unit sensor includes a pixel electrode coupled between the first line and the second line, a first capacitance element coupled between the first line and the pixel electrode, a second capacitance element coupled between the second line and the pixel electrode, a switching element coupled between the pixel electrode and one of the first line, the second line, a first line of an adjacent unit sensor, and a second line of the adjacent unit sensor, and including a control electrode coupled to the third line, and a third capacitance element coupled between the third line and the pixel electrode, in which at least one of the first and the second capacitance elements includes a variable capacitance element.
    Type: Application
    Filed: June 11, 2018
    Publication date: May 9, 2019
    Inventors: Keum Dong JUNG, Ki Seo Kim, II Nam Kim, Kyung Tea Park, Yun Ho Kim, Jae Kyoung Kim, Won Sang Park, Jong In Baek
  • Publication number: 20190056699
    Abstract: A display device and an electronic watch including the same are disclosed. In one aspect, the display device includes a substrate having a through-hole. The display device also includes a display unit formed on the substrate and surrounding the through-hole, the display unit configured to display an image.
    Type: Application
    Filed: October 22, 2018
    Publication date: February 21, 2019
    Inventors: Ki Nyeng Kang, Keum Nam Kim, Jong Hyun Choi
  • Publication number: 20180308409
    Abstract: In a scan driver including a plurality of stages configured to supply scan signals to scan lines, the scan driver includes: an i?1th stage configured to supply an i?1th scan signal to an i?1th scan line while controlling a node Qi?1 (i is a natural number) in response to a first clock signal, a third clock signal, and a control voltage; an ith stage configured to supply an ith scan signal to an ith scan line while controlling a node Qi in response to a second clock signal, a fourth clock signal, and the control voltage; and a controller connected to the i?1th stage and the ith stage, and configured to supply the control voltage.
    Type: Application
    Filed: June 25, 2018
    Publication date: October 25, 2018
    Inventors: Jun Hyun Park, Keum Nam Kim, Sung Hwan Kim, Kyoung Ju Shin
  • Patent number: 10108149
    Abstract: A display device includes a substrate having a through-hole. The display device also includes a display unit formed on the substrate and surrounding the through-hole, the display unit configured to display an image, and the display unit includes pixels.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: October 23, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ki Nyeng Kang, Keum Nam Kim, Jong Hyun Choi
  • Patent number: 10074305
    Abstract: A pixel includes a driving transistor including a gate connected to a first node, a first electrode connected to a second node, and a second electrode connected to an OLED, a first transistor configured to receive a first emission control signal and connected between a first power source and the second node, a second transistor configured to receive a scan signal and connected between the first and second nodes, a third transistor configured to receive the scan signal and including a first electrode configured to receive a data voltage, and a second electrode connected to a third node, a fourth transistor configured to receive a second emission control signal and connected between the third node and the OLED, a fifth transistor configured to receive the scan signal and connected between the OLED and an initializing power source, and a storage capacitor connected between the first node and the third node.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: September 11, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yang Hwa Choi, Keum Nam Kim, Dong Woo Kim
  • Patent number: 10008143
    Abstract: In a scan driver including a plurality of stages configured to supply scan signals to scan lines, the scan driver includes: an i?1th stage configured to supply an i?1th scan signal to an i?1th scan line while controlling a node Qi?1 (i is a natural number) in response to a first clock signal, a third clock signal, and a control voltage; an ith stage configured to supply an ith scan signal to an ith scan line while controlling a node Qi in response to a second clock signal, a fourth clock signal, and the control voltage; and a controller connected to the i?1th stage and the ith stage, and configured to supply the control voltage.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: June 26, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Hyun Park, Keum Nam Kim, Sung Hwan Kim, Kyoung Ju Shin
  • Patent number: 9767753
    Abstract: A scan driver includes a plurality of stages configured to supply scan signals to scan lines. An ith (i is a natural number) stage of the stages at one side of a panel includes: a first transistor connected between a first input terminal and a first node, and including a gate electrode connected to a second input terminal; a second transistor connected between a third input terminal and a first output terminal for outputting an ith scan signal of the scan signals, and including a gate electrode connected to the first node; a third transistor connected between the first output terminal and a first power input terminal configured to receive a first off voltage, and including a gate electrode connected to the second input terminal; and a first capacitor connected between the first node and the first output terminal.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: September 19, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Hyun Park, Keum Nam Kim, Sung Hwan Kim, Kyoung Ju Shin
  • Patent number: 9704433
    Abstract: An organic light emitting display and associated method includes: initializing a first node of a storage capacitor, connected between the first node and a second node, with a first driving voltage that is provided from a first power terminal; applying a sustain voltage to the first node and placing a driving transistor in a diode connection state, wherein the driving transistor comprises a gate electrode connected to the second node, an electrode connected to the first power terminal, and another electrode connected to an organic light emitting diode through a third node; applying a data signal, provided from the data line through a switching transistor comprising a gate electrode connected to a scan line, an electrode connected to the data line, and another electrode connected to a first node, to the first node; and generating a compensation voltage by applying the first driving voltage to the first node.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: July 11, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventor: Keum Nam Kim
  • Patent number: 9634272
    Abstract: A foldable display according to the present disclosure includes: a substrate having a folding portion which is folded; and a plurality of transistors in the substrate each of the transistors including: a gate electrode on the substrate; a channel overlapping the gate electrode; and a source electrode and a drain electrode positioned at respective sides of the channel, wherein the gate electrode is divided into a plurality of sub-gate electrodes by at least one gate cutout.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: April 25, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yang-Hwa Choi, Keum Nam Kim
  • Patent number: 9634077
    Abstract: An organic light emitting display device may include a substrate having a pixel region and a transparent region, a first capacitor disposed in the transparent region of the substrate, a semiconductor device disposed in the pixel region of the substrate, a second capacitor disposed on the semiconductor device, and an organic light emitting structure disposed on the second capacitor. The organic light emitting display device may have a sufficient capacitance for components including the semiconductor device and the organic light emitting structure without increasing an area of the pixel region while maintaining a transmittance of the organic light emitting display device.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: April 25, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gyung-Soon Park, Keum-Nam Kim, Min-Jae Jeong
  • Publication number: 20170069282
    Abstract: A scan driver includes a plurality of stages configured to supply scan signals to scan lines. An ith (i is a natural number) stage of the stages at one side of a panel includes: a first transistor connected between a first input terminal and a first node, and including a gate electrode connected to a second input terminal; a second transistor connected between a third input terminal and a first output terminal for outputting an ith scan signal of the scan signals, and including a gate electrode connected to the first node; a third transistor connected between the first output terminal and a first power input terminal configured to receive a first off voltage, and including a gate electrode connected to the second input terminal; and a first capacitor connected between the first node and the first output terminal.
    Type: Application
    Filed: April 21, 2016
    Publication date: March 9, 2017
    Inventors: Jun Hyun Park, Keum Nam Kim, Sung Hwan Kim, Kyoung Ju Shin
  • Publication number: 20170061914
    Abstract: In a scan driver including a plurality of stages configured to supply scan signals to scan lines, the scan driver includes: an i?1th stage configured to supply an i?1th scan signal to an i?1th scan line while controlling a node Qi?1 (i is a natural number) in response to a first clock signal, a third clock signal, and a control voltage; an ith stage configured to supply an ith scan signal to an ith scan line while controlling a node Qi in response to a second clock signal, a fourth clock signal, and the control voltage; and a controller connected to the i?1th stage and the ith stage, and configured to supply the control voltage.
    Type: Application
    Filed: April 6, 2016
    Publication date: March 2, 2017
    Inventors: Jun Hyun PARK, Keum Nam KIM, Sung Hwan KIM, Kyoung Ju SHIN
  • Publication number: 20170061880
    Abstract: A pixel includes a driving transistor including a gate connected to a first node, a first electrode connected to a second node, and a second electrode connected to an OLED, a first transistor configured to receive a first emission control signal and connected between a first power source and the second node, a second transistor configured to receive a scan signal and connected between the first and second nodes, a third transistor configured to receive the scan signal and including a first electrode configured to receive a data voltage, and a second electrode connected to a third node, a fourth transistor configured to receive a second emission control signal and connected between the third node and the OLED, a fifth transistor configured to receive the scan signal and connected between the OLED and an initializing power source, and a storage capacitor connected between the first node and the third node.
    Type: Application
    Filed: August 9, 2016
    Publication date: March 2, 2017
    Inventors: Yang Hwa Choi, Keum Nam Kim, Dong Woo Kim
  • Patent number: 9583553
    Abstract: An organic light emitting display device includes a substrate a plurality of pixels disposed along a first direction and a second direction, the first direction and the second direction being substantially parallel to a top surface of the substrate and substantially perpendicular to each other, first wirings which is disposed on the substrate, extends in the first direction, and includes a first low voltage power line, and second wirings which is disposed on the substrate, extends in the second direction, and includes a second low voltage power line electrically connected to the first low voltage power line.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: February 28, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Gyung-Soon Park, Keum-Nam Kim, Min-Jae Jeong
  • Publication number: 20170032739
    Abstract: A pixel of an organic light emitting display device includes a first transistor connected between a data line and a first node, a second transistor connected between a second node and a third node, a third transistor connected between the second node and a fourth node, a fourth transistor connected between the first node and the second node, a fifth transistor connected between the third node and an initializing power source, a sixth transistor connected between a first power source and the third node, a capacitor connected between the first node and the fourth node, and an organic light emitting diode (OLED) connected between the second node and a second power source.
    Type: Application
    Filed: July 20, 2016
    Publication date: February 2, 2017
    Inventors: Keum Nam Kim, Dong Woo Kim, Yang Hwa Choi
  • Publication number: 20160372047
    Abstract: A method of driving an organic light emitting display device may include concurrently initializing pixels by adjusting a voltage level of a power voltage which is provided to the pixels during an initialization period of a (2k?1)-th image frame, sequentially writing a first data signal including the (2k?1)-th image frame into the pixels by sequentially performing a scanning operation on a plurality of scan lines in a first direction, displaying the (2k?1)-th image frame by sequentially providing an emission signal to emission lines in the first direction, concurrently initializing the pixels during an initialization period of a (2k)-th image frame, sequentially writing a second data signal including the (2k)-th image frame into the pixels by sequentially performing the scanning operation on the scan lines in a second direction, and displaying the (2k)-th image frame by sequentially providing the emission signal to the emission lines in the second direction.
    Type: Application
    Filed: January 11, 2016
    Publication date: December 22, 2016
    Inventors: Dong Woo Kim, Keum Nam Kim, Yang Hwa Choi
  • Publication number: 20160363909
    Abstract: A display device and an electronic watch including the same are disclosed. In one aspect, the display device includes a substrate having a through-hole. The display device also includes a display unit formed on the substrate and surrounding the through-hole, the display unit configured to display an image.
    Type: Application
    Filed: January 18, 2016
    Publication date: December 15, 2016
    Inventors: Ki Nyeng Kang, Keum Nam Kim, Jong Hyun Choi
  • Patent number: 9508300
    Abstract: A driving circuit includes: an input terminal; an output terminal; a first transistor having a source electrode coupled to the input terminal, a drain electrode coupled to the output terminal, and a gate electrode; a second transistor having a source electrode, a drain electrode, and a gate electrode respectively coupled to the source electrode, the drain electrode, and the gate electrode of the first transistor; a first capacitor having a first electrode coupled to the input terminal and a second electrode coupled to the output terminal; and a second capacitor coupled in parallel with the first capacitor and having a first electrode coupled to the first electrode of the first capacitor and a second electrode that is floated.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: November 29, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Mi Choi, Bo-Yong Chung, Keum-Nam Kim
  • Patent number: 9496317
    Abstract: A method of manufacturing an organic light emitting display apparatus by utilizing a deposition apparatus for forming an organic layer on a substrate includes: fixing the substrate to a mask assembly for forming a common layer or a mask assembly for forming a pattern layer in a loading unit; when the one or more deposition assemblies are separated from the substrate, forming an intermediate layer by depositing a deposition material discharged from the one or more deposition assemblies in a deposition unit of the deposition apparatus onto the substrate while the substrate is moved relative to the one or more deposition assemblies by a first conveyer unit; and separating the substrate on which the deposition is finished from the mask assembly for forming the common layer or the mask assembly for forming the pattern layer in an unloading unit.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: November 15, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min-Hwan Choi, Chi-Woo Kim, Gun-Shik Kim, Ok-Keun Song, Kee-Han Uh, Seong-Ho Jeong, You-Min Cha, Jae-Beom Choi, Young-Mo Koo, Keum-Nam Kim, Dae-Sung Choi