Patents by Inventor Choong-Hwa Kim

Choong-Hwa 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: 12336422
    Abstract: A method of aging a display device includes: inputting a display device including a plurality of pixels into an aging chamber, reaching a preset condition of the display device, sensing each of the plurality of pixels, compensating each of the plurality of pixels, and aging the display device.
    Type: Grant
    Filed: February 7, 2024
    Date of Patent: June 17, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Choong-Hwa Kim, Taekyoung Kim, Jian Shin, Hun-Tae Kim, Wonjin Seo, Yongjun Lee
  • Publication number: 20240268209
    Abstract: A method of aging a display device includes: inputting a display device including a plurality of pixels into an aging chamber, reaching a preset condition of the display device, sensing each of the plurality of pixels, compensating each of the plurality of pixels, and aging the display device.
    Type: Application
    Filed: February 7, 2024
    Publication date: August 8, 2024
    Inventors: CHOONG-HWA KIM, TAEKYOUNG KIM, JIAN SHIN, HUN-TAE KIM, WONJIN SEO, YONGJUN LEE
  • Patent number: 9747853
    Abstract: A liquid crystal display according to an exemplary embodiment of the present disclosure includes: a first substrate where a pixel electrode is formed; a second substrate facing the first substrate; a liquid crystal layer provided between the first substrate and the second substrate; and a driving device connected with the first substrate, wherein the first substrate includes a pixel area where pixels emit light, and a load storage area provided between the pixel area and the driving device and constantly maintaining a load applied to the pixels in the pixel area.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: August 29, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyoung-Rae Lee, Choong-Hwa Kim, Moon Ju Kim, Eun Suk Kim, Seok-Kun Yoon, Kwang Youl Lee, Jong-Won Choo
  • Publication number: 20160055813
    Abstract: A liquid crystal display according to an exemplary embodiment of the present disclosure includes: a first substrate where a pixel electrode is formed; a second substrate facing the first substrate; a liquid crystal layer provided between the first substrate and the second substrate; and a driving device connected with the first substrate, wherein the first substrate includes a pixel area where pixels emit light, and a load storage area provided between the pixel area and the driving device and constantly maintaining a load applied to the pixels in the pixel area.
    Type: Application
    Filed: March 5, 2015
    Publication date: February 25, 2016
    Inventors: Hyoung-Rae LEE, Choong-Hwa KIM, Moon Ju KIM, Eun Suk KIM, Seok-Kun YOON, Kwang Youl LEE, Jong-Won CHOO
  • Publication number: 20150170598
    Abstract: A method of driving a display panel includes comparing a previous frame data and a present frame data, outputting an inversion control signal of the present frame based on a result of the comparing the previous frame data and the present frame data, generating a positive pixel voltage and a negative pixel voltage based on the inversion control signal and displaying an image based on the positive pixel voltage and the negative pixel voltage.
    Type: Application
    Filed: May 30, 2014
    Publication date: June 18, 2015
    Applicant: Samsung Display Co., LTD.
    Inventors: Bong-Chool JEON, Yun-Tae KIM, Choong-Hwa KIM, Chae-Woo CHUNG, Ki-Hyun PYUN, Eun-Bum PYUN
  • Patent number: 8520035
    Abstract: In a method of driving a display panel, a gate signal is outputted to the display panel based on a first control signal. A gamma-corrected analog voltage is generated. A pre-charge compensating analog voltage is generated. A data voltage waveform is generated to include the generated gamma-corrected analog voltage and the generated pre-charge compensating analog voltage during one horizontal period of the display panel. The display panel has a pixel structure in which a data line is alternately connected to first and second subpixel columns adjacent to each other. The pre-charge compensating voltage has a level different from that of the gamma-corrected analog voltage where the latter represents a grayscale level represented by a received digital data signal. According to the method, display defects due to a difference of pre-charging levels used during plural horizontal periods may be decreased so that display quality of the display panel may be improved.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: August 27, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyoung-Rae Lee, Seong-Il Kim, Seung-Woon Shin, Jung-Hoon Ku, Choong-Hwa Kim
  • Publication number: 20110242140
    Abstract: In a method of driving a display panel, a gate signal is outputted to the display panel based on a first control signal. A gamma-corrected analog voltage is generated. A pre-charge compensating analog voltage is generated. A data voltage waveform is generated to include the generated gamma-corrected analog voltage and the generated pre-charge compensating analog voltage during one horizontal period of the display panel. The display panel has a pixel structure in which a data line is alternately connected to first and second subpixel columns adjacent to each other. The pre-charge compensating voltage has a level different from that of the gamma-corrected analog voltage where the latter represents a grayscale level represented by a received digital data signal. According to the method, display defects due to a difference of pre-charging levels used during plural horizontal periods may be decreased so that display quality of the display panel may be improved.
    Type: Application
    Filed: December 7, 2010
    Publication date: October 6, 2011
    Inventors: HYOUNG-RAE LEE, SEONG-IL KIM, SEUNG-WOON SHIN, JUNG-HOON KU, CHOONG-HWA KIM
  • Publication number: 20100254108
    Abstract: A display device includes a display panel on which an image is displayed, and a driving board. The driving board includes a substrate, a first multi-layer ceramic condenser disposed on the substrate and to which a first current is supplied, and a second multi-layer ceramic condenser disposed substantially parallel with the first multi-layer ceramic condenser and to which a second current is supplied. The first current and the second current are supplied to the first multi-layer ceramic condenser and the second multi-layer ceramic condenser, respectively, in opposite directions.
    Type: Application
    Filed: October 22, 2009
    Publication date: October 7, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong-II KIM, Jung-Hoon KU, In-Han JEON, Jun-Ho HWANG, Eun-Jeong KIM, Choong-Hwa KIM, Ri-Na YOU
  • Publication number: 20090237340
    Abstract: A liquid crystal display (LCD) module and a display system including the LCD module are provided. The LCD module includes a common-voltage adjustment unit which is enabled by interfacing with an external device and thus adjusts a common voltage; a signal control unit which outputs a first reverse signal that reverses the polarity of a voltage at intervals of at least two frames; and a data driving unit which reverses the polarity of an image data voltage with respect to the common voltage at intervals of at least two frames in response to the first reverse signal.
    Type: Application
    Filed: March 19, 2009
    Publication date: September 24, 2009
    Inventors: Joo-Hwan PARK, Seong-Il Kim, Kyung-Woo Kim, Gyu-Su Lee, Dae-Young Joung, Jun-Ho Hwang, Jung-Hoon Ku, Choong-Hwa Kim, Ri-Na You