Patents by Inventor Jun-Ho Hwang

Jun-Ho Hwang 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: 12333970
    Abstract: In a method of determining a gate voltage of a display device, gamma reference voltages including a black data voltage are determined by performing a multi-time programming (MTP) operation on the display device, copy mura pattern data are provided to the display device, a luminance curve of the gate voltage is obtained by measuring luminance of the display device while gradually changing the gate voltage, a peak gate voltage is determined corresponding to a peak point of the luminance curve, and a final gate voltage is determined based on the black data voltage and the peak gate voltage.
    Type: Grant
    Filed: April 23, 2024
    Date of Patent: June 17, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun-Ho Hwang, Hyungjun An
  • Publication number: 20250095525
    Abstract: In a method of determining a gate voltage of a display device, gamma reference voltages including a black data voltage are determined by performing a multi-time programming (MTP) operation on the display device, copy mura pattern data are provided to the display device, a luminance curve of the gate voltage is obtained by measuring luminance of the display device while gradually changing the gate voltage, a peak gate voltage is determined corresponding to a peak point of the luminance curve, and a final gate voltage is determined based on the black data voltage and the peak gate voltage.
    Type: Application
    Filed: April 23, 2024
    Publication date: March 20, 2025
    Inventors: JUN-HO HWANG, HYUNGJUN AN
  • Patent number: 11452207
    Abstract: A flexible circuit film including a first flexible film, a second flexible film facing the first flexible film, and a plurality of wirings arranged between the first flexible film and the second flexible film. The wirings have different widths and bend in different directions, and a guide film including a material more rigid than the first and second flexible films is arranged on ends of the first flexible film. The guide film includes a tear-preventing portion overlapping with a bending portion of a shortest one of the wirings while covering portions of an inner edge near inner corners of a U-shaped flexible circuit film.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: September 20, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Ho Hwang, Jang-Mi Lee
  • Publication number: 20210331010
    Abstract: Disclosed is a pipe-type fire extinguishing equipment for extinguishing a fire inside a ship transport container, including: an agent storage part installed inside the container and storing a fire extinguishing agent for extinguishing a fire; a supply pipe installed on an upper portion inside the container and connected to the agent storage part to receive and guide the fire extinguishing agent; spray holes communicating with the supply pipe and spraying the fire extinguishing agent, which flows through the supply pipe, to the inside of the container; opening/closing members which keep the spray holes closed and open the spray holes upon being melted by heat when a fire occurs; and an alarm sound generation unit connected to the supply pipe and generating an alarm sound by means of the fire extinguishing agent which is supplied to the supply pipe when the fire extinguishing agent is sprayed through the spray holes.
    Type: Application
    Filed: October 4, 2019
    Publication date: October 28, 2021
    Inventors: Jun-Ho HWANG, Sang-Dong KIM, Jeomkee PAIK, Yong Hwan DO
  • Publication number: 20210219429
    Abstract: A flexible circuit film including a first flexible film, a second flexible film facing the first flexible film, and a plurality of wirings arranged between the first flexible film and the second flexible film. The wirings have different widths and bend in different directions, and a guide film including a material more rigid than the first and second flexible films is arranged on ends of the first flexible film. The guide film includes a tear-preventing portion overlapping with a bending portion of a shortest one of the wirings while covering portions of an inner edge near inner corners of a U-shaped flexible circuit film.
    Type: Application
    Filed: March 29, 2021
    Publication date: July 15, 2021
    Inventors: Jun-Ho HWANG, Jang-Mi LEE
  • Patent number: 11062647
    Abstract: A display device including a display panel and a data modulator. The display panel includes a main display region, an auxiliary display region adjacent to the main display region in a first direction, and a notch region adjacent to the auxiliary display region in a second direction crossing the first direction, an image not being displayed in the notch region. The data modulator modulates a notch data corresponding to the notch region among an image data.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: July 13, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Ho Hwang, Yun Ki Baek
  • Patent number: 10789907
    Abstract: A gamma reference voltage generating circuit including a first resistor string disposed between a first reference voltage node and a second reference voltage node, a first multiplexer connected to the first resistor string and determining a level of a first gamma reference voltage, a first amplifier connected to the first multiplexer and outputting the first gamma reference voltage, a first resistor connected between an output terminal of the first amplifier and a first previous gamma voltage output node, a second resistor connected between the output terminal of the first amplifier and a first next gamma voltage output node, a first compensating resistor connected between a second previous gamma voltage output node and the present gamma voltage output node, and a second compensating resistor connected between a second next gamma voltage output node and the present gamma voltage output node.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: September 29, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jun-Ho Hwang
  • Patent number: 10535293
    Abstract: In a method of operating a display device, it is determined whether an image represented by input image data is a single color image, it is determined whether the image represented by the input image data is a low gray image, compensated image data are generated by adding sub-pixel data corresponding to a color different from a color of the single color image to the input image data when the image represented by the input image data is the single color image and the low gray image, and an image is displayed based on the compensated image data.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: January 14, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun-Ho Hwang, Choonyul Oh, Sunjoon Hwang, Dongjun Han
  • Publication number: 20190272798
    Abstract: A gamma reference voltage generating circuit including a first resistor string disposed between a first reference voltage node and a second reference voltage node, a first multiplexer connected to the first resistor string and determining a level of a first gamma reference voltage, a first amplifier connected to the first multiplexer and outputting the first gamma reference voltage, a first resistor connected between an output terminal of the first amplifier and a first previous gamma voltage output node, a second resistor connected between the output terminal of the first amplifier and a first next gamma voltage output node, a first compensating resistor connected between a second previous gamma voltage output node and the present gamma voltage output node, and a second compensating resistor connected between a second next gamma voltage output node and the present gamma voltage output node.
    Type: Application
    Filed: December 10, 2018
    Publication date: September 5, 2019
    Inventor: Jun-Ho HWANG
  • Patent number: 10395580
    Abstract: A method of compensating luminance of a display panel, the method including respectively measuring, at different time points, test luminances of the display panel driven by test data while a multi-time programming (MTP) operation for setting the luminance of the display panel respectively for one or more gray values is performed, and deriving a luminance equation representing a relationship between a driving time of the display panel and the luminance of the display panel from the time points and the test luminances.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: August 27, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jun-Ho Hwang
  • Publication number: 20190189045
    Abstract: In a method of operating a display device, it is determined whether an image represented by input image data is a single color image, it is determined whether the image represented by the input image data is a low gray image, compensated image data are generated by adding sub-pixel data corresponding to a color different from a color of the single color image to the input image data when the image represented by the input image data is the single color image and the low gray image, and an image is displayed based on the compensated image data.
    Type: Application
    Filed: May 31, 2018
    Publication date: June 20, 2019
    Inventors: Jun-Ho HWANG, Choonyul OH, Sunjoon HWANG, Dongjun HAN
  • Patent number: 10321568
    Abstract: A flexible circuit film including a first flexible film, a second flexible film facing the first flexible film, and a plurality of wirings arranged between the first flexible film and the second flexible film. The wirings have different widths and bend in different directions, and a guide film including a material more rigid than the first and second flexible films is arranged on ends of the first flexible film. The guide film includes a tear-preventing portion overlapping with a bending portion of a shortest one of the wirings while covering portions of an inner edge near inner corners of a U-shaped flexible circuit film.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: June 11, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Ho Hwang, Jang-Mi Lee
  • Publication number: 20190156739
    Abstract: A display device including a display panel and a data modulator. The display panel includes a main display region, an auxiliary display region adjacent to the main display region in a first direction, and a notch region adjacent to the auxiliary display region in a second direction crossing the first direction, an image not being displayed in the notch region. The data modulator modulates a notch data corresponding to the notch region among an image data.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 23, 2019
    Inventors: Jun-Ho HWANG, Yun Ki BAEK
  • Patent number: 10152912
    Abstract: A display apparatus includes a display panel, a first data driver, a second data driver, and a first capacitor. The display panel is connected to a plurality of data lines. The first data driver is connected to first data lines among the plurality of data lines, and is configured to perform a first charge sharing for the first data lines. The second data driver is connected to second data lines among the plurality of data lines, and is configured to perform a second charge sharing for the second data lines. The first capacitor is connected to the first data driver and the second data driver. Each of the first and second charge sharings is performed using the first capacitor.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: December 11, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jun-Ho Hwang
  • Patent number: 10147384
    Abstract: A boosting voltage generator includes a switching circuit, a control circuit and a boosting circuit. The switching circuit is connected to a first input terminal receiving a first frame signal and a second input terminal receiving a second frame signal, and generates a first switching signal and a second switching signal based on a voltage at the first input terminal and a voltage at the second input terminal. The second frame signal has a phase opposite to that of the first frame signal. The control circuit is connected to the first and second input terminals, and selectively connects the first and second input terminals with a ground voltage based on a mode selection signal. The boosting circuit generates a first boosting voltage and a second boosting voltage based on the first switching signal, the second switching signal, a first feedback voltage and a second feedback voltage.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: December 4, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun-Ho Hwang, Ho-In Kim, Shim-Ho Yi
  • Publication number: 20180268820
    Abstract: Disclosed is a method and system for creating content using a speech comment. A content providing method configured as a computer may include creating content in which an audio file and a text extracted from speech of a user are combined, the speech being recorded as a comment on a posting, and providing the content as a speech comment of the user.
    Type: Application
    Filed: March 15, 2018
    Publication date: September 20, 2018
    Applicant: NAVER Corporation
    Inventors: Chan Kyu PARK, Jung Sik KIM, Jun-ho HWANG, Sujin MIN, Dae Hwang KIM
  • Publication number: 20180130394
    Abstract: A method of compensating luminance of a display panel, the method including respectively measuring, at different time points, test luminances of the display panel driven by test data while a multi-time programming (MTP) operation for setting the luminance of the display panel respectively for one or more gray values is performed, and deriving a luminance equation representing a relationship between a driving time of the display panel and the luminance of the display panel from the time points and the test luminances.
    Type: Application
    Filed: September 12, 2017
    Publication date: May 10, 2018
    Inventor: Jun-Ho HWANG
  • Patent number: 9767759
    Abstract: A gate driver includes a precharge signal generating part configured to generate a precharge signal which varies based on a previous data signal corresponding to a previous gate line and a data signal corresponding to a gate line, and a signal adding part configured to add the precharge signal and a non-precharge signal to generate a gate signal.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: September 19, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong-Jin Shin, Jun-Ho Hwang
  • Patent number: 9741310
    Abstract: A method of driving a display panel includes charging a pixel with first data during a first charging period, comparing a first grayscale of the first data and a second grayscale of second data, charging the pixel with compensated data during a second charging period if the first grayscale is greater than the second grayscale, and charging the pixel with the second data during a third charging period.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: August 22, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ki-Hyun Pyun, Jang-Hoon Kwak, Hee-Bum Park, Jun-Ho Hwang
  • Publication number: 20170238421
    Abstract: A flexible circuit film includes a first flexible film, a second flexible film facing the first flexible film, a plurality of wirings arranged between the first flexible film and the second flexible film and extending in a first direction, then bending to extend in a second direction crossing the first direction, and then bending a second time to extend in an opposing direction to the first direction, and a guide film including a material more rigid than the first and second flexible films and arranged on an ends of the first flexible film. The guide film includes a tear-preventing portion overlapping with a bending portion of a shortest one of the wirings while covering portions of an inner edge near inner corners of a U-shaped flexible circuit film.
    Type: Application
    Filed: April 28, 2017
    Publication date: August 17, 2017
    Inventors: Jun-Ho HWANG, Jang-Mi LEE