Patents by Inventor Deok-Jun Choi

Deok-Jun Choi 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).

  • Publication number: 20190340974
    Abstract: A display device includes: a display region including a first pixel region, a second pixel region, and a third pixel region; a dummy region including a first dummy region disposed between the second pixel region and the third pixel region; first, second, and third pixels respectively arranged in the first pixel region, the second pixel region, and the third pixel region in a matrix of vertical lines and horizontal lines; a data converter configured to: receive first image data including effective data corresponding to the display region and dummy data corresponding to the dummy region; and generate second image data by converting a gray scale value of dummy data corresponding to at least one region of the first dummy region in the first image data into a predetermined first gray scale value, the first gray scale value being between a lowest gray scale value and a highest gray scale value.
    Type: Application
    Filed: November 1, 2018
    Publication date: November 7, 2019
    Inventors: Ji Hyun Ka, Tae Hoon Kwon, Ki Myeong Eom, Chung Yi, Se Byung Chae, Deok Jun Choi, Moon Sang Hwang
  • Patent number: 10210808
    Abstract: A luminance controller according to example embodiments includes a gamma set selector to select a reference gamma set from among first through N-th gamma sets respectively corresponding to first through N-th reference luminances, based on a target luminance of a display panel; an initialization voltage selector to select an initialization voltage corresponding to the reference gamma set, from among first through N-th initialization voltage offsets respectively corresponding to the first through N-th gamma sets; a common voltage selector to select a common voltage corresponding to the reference gamma set from among first through N-th common voltage offsets respectively corresponding to the first through N-th gamma sets; and a determiner to determine a target initialization voltage based on the target luminance and the initialization voltage, and to determine a target common voltage based on the target luminance and the common voltage.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: February 19, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yeon-Shil Jung, Young-Seob Kim, Ji-Yun Son, Eun-Jung Oh, Deok-Jun Choi
  • Patent number: 9842536
    Abstract: A display device includes a data driver, line selectors, and a controller. The data driver provides data signals to output lines. The line selectors control connections between the output lines and data lines. The controller selects a normal driving mode or a low frequency driving mode as a panel driving mode and controls a scan driver, the data driver, and the line selectors based on the panel driving mode. Each line selector respectively connects the output lines to the data lines when the panel driving mode is the normal driving mode, and progressively connects one of the output lines to some of the data lines when the panel driving mode is the low frequency driving mode.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: December 12, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventor: Deok-Jun Choi
  • Publication number: 20170186375
    Abstract: A luminance controller according to example embodiments includes a gamma set selector to select a reference gamma set from among first through N-th gamma sets respectively corresponding to first through N-th reference luminances, based on a target luminance of a display panel; an initialization voltage selector to select an initialization voltage corresponding to the reference gamma set, from among first through N-th initialization voltage offsets respectively corresponding to the first through N-th gamma sets; a common voltage selector to select a common voltage corresponding to the reference gamma set from among first through N-th common voltage offsets respectively corresponding to the first through N-th gamma sets; and a determiner to determine a target initialization voltage based on the target luminance and the initialization voltage, and to determine a target common voltage based on the target luminance and the common voltage.
    Type: Application
    Filed: December 23, 2016
    Publication date: June 29, 2017
    Inventors: Yeon-Shil JUNG, Young-Seob KIM, Ji-Yun SON, Eun-Jung OH, Deok-Jun CHOI
  • Patent number: 9626734
    Abstract: A display driver and an image signal processing system including the same, the display driver including a register block configured to sequentially store commands received from an application processor through a data lane, and a command processing unit configured to sequentially execute the commands during a plurality of frames.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: April 18, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventor: Deok-Jun Choi
  • Publication number: 20160284257
    Abstract: A display device includes a data driver, line selectors, and a controller. The data driver provides data signals to output lines. The line selectors control connections between the output lines and data lines. The controller selects a normal driving mode or a low frequency driving mode as a panel driving mode and controls a scan driver, the data driver, and the line selectors based on the panel driving mode. Each line selector respectively connects the output lines to the data lines when the panel driving mode is the normal driving mode, and progressively connects one of the output lines to some of the data lines when the panel driving mode is the low frequency driving mode.
    Type: Application
    Filed: August 27, 2015
    Publication date: September 29, 2016
    Inventor: Deok-Jun CHOI
  • Patent number: 9361847
    Abstract: A display device with a signal controller is disclosed. The display device includes a display panel, a scan driver, a data driver, a touch screen including a touch controller, a graphics controller and a signal controller. The signal controller generates a multiple control signal for controlling the timing of recording of an image signal and the timing of driving of the touch screen panel. The signal controller transmits the multiple control signal to the graphics controller and the touch controller.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: June 7, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventor: Deok Jun Choi
  • Publication number: 20150170323
    Abstract: A display driver and an image signal processing system including the same, the display driver including a register block configured to sequentially store commands received from an application processor through a data lane, and a command processing unit configured to sequentially execute the commands during a plurality of frames.
    Type: Application
    Filed: December 12, 2014
    Publication date: June 18, 2015
    Inventor: Deok-Jun Choi
  • Publication number: 20150161955
    Abstract: A display device with a signal controller is disclosed. The display device includes a display panel, a scan driver, a data driver, a touch screen including a touch controller, a graphics controller and a signal controller. The signal controller generates a multiple control signal for controlling the timing of recording of an image signal and the timing of driving of the touch screen panel. The signal controller transmits the multiple control signal to the graphics controller and the touch controller.
    Type: Application
    Filed: June 9, 2014
    Publication date: June 11, 2015
    Inventor: Deok Jun Choi
  • Patent number: 8796051
    Abstract: A bonding apparatus for a display device includes a film bonding device for bonding an anisotropic conductive film to a display substrate; and a pressure device for bonding a driving chip to the anisotropic conductive film of the display substrate, wherein the pressure device includes a pressure head with a heat source, and a pressure tip attached to a lower surface of the pressure head and including a plurality of sub-pressure tips that are separated from each other.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: August 5, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Deok-Jun Choi
  • Publication number: 20140106484
    Abstract: A bonding apparatus for a display device includes a film bonding device for bonding an anisotropic conductive film to a display substrate; and a pressure device for bonding a driving chip to the anisotropic conductive film of the display substrate, wherein the pressure device includes a pressure head with a heat source, and a pressure tip attached to a lower surface of the pressure head and including a plurality of sub-pressure tips that are separated from each other.
    Type: Application
    Filed: May 10, 2013
    Publication date: April 17, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventor: Deok-Jun Choi
  • Publication number: 20140022229
    Abstract: Disclosed are a gate driver and a display device including the same. The gate driver comprises a register which stores data, a gate driving circuit which generates driving signals based on the data stored in the register, and one or more output terminals which output the driving signals generated by the gate driving circuit.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 23, 2014
    Inventor: Deok Jun Choi
  • Patent number: 8624816
    Abstract: A liquid crystal display device includes a display unit including a plurality of liquid crystal cells at crossing regions of a plurality of data lines and a plurality of gate lines, a source driver for supplying source voltages to the plurality of data lines, and a temperature sensor for sensing an ambient temperature and for outputting an temperature sensing signal corresponding to the ambient temperature, wherein the source driver includes a source amplifying register unit for controlling a rising slope of the source voltages in accordance with the temperature sensing signal.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: January 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jee-Youl Ryu, Yeon-Shil Jung, Deok-Jun Choi, Tae-Soo Kim
  • Publication number: 20100013817
    Abstract: A liquid crystal display device includes a display unit including a plurality of liquid crystal cells at crossing regions of a plurality of data lines and a plurality of gate lines, a source driver for supplying source voltages to the plurality of data lines, and a temperature sensor for sensing an ambient temperature and for outputting an temperature sensing signal corresponding to the ambient temperature, wherein the source driver includes a source amplifying register unit for controlling a rising slope of the source voltages in accordance with the temperature sensing signal.
    Type: Application
    Filed: July 10, 2009
    Publication date: January 21, 2010
    Inventors: Jee-Youl Ryu, Yeon-Shil Jung, Deok-Jun Choi, Tae-Soo Kim