Patents by Inventor Joon-Chul Goh

Joon-Chul Goh 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: 8854287
    Abstract: A vertical alignment liquid crystal display includes two sub-pixels each with a variable capacitor. A pixel is bisected into a high gray sub-pixel and a low gray sub-pixel through forming a variable capacitor at each sub-pixel. With this structure, the sub-pixels express different grays so that lateral visibility is enhanced. It is not required in bisecting a pixel into two sub-pixels to form separate wires for applying different signals thereto, and the amount of data to be processed at the driver for driving the display device is reduced. Furthermore, a pixel is bisected into two sub-pixels with variable capacitors in a simplified manner, and it is not required to form additional wires and elements, so the aperture ratio is enhanced.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joon-Chul Goh, Kwang-Chul Jung, Chong-Chul Chai, Mee-Hye Jung, Young-Soo Yoon
  • Patent number: 8848122
    Abstract: A display apparatus includes a plurality of pixels. At least one of the pixels includes a gate line, a data line, a first storage line spaced apart from the gate line, a second storage line spaced apart from the gate line and the first storage line, first and second switching devices electrically connected to the gate line and the data line, a first liquid crystal capacitor connected to the first switching device and including the liquid crystal layer as its dielectric substance, a second liquid crystal capacitor connected to the second switching device and including the liquid crystal layer as its dielectric substance, a first storage capacitor connected between the first switching device and one of the first and second storage lines, and a second storage capacitor connected between the second switching device and a remaining one of the first and second storage lines.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: September 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-chul Jung, Chongchul Chai, Kyoungju Shin, Joon-Chul Goh, Young-Soo Yoon
  • Publication number: 20140232756
    Abstract: A image signal processing method of a liquid crystal display according to an exemplary embodiment of the present invention includes: receiving a previous image signal and a current image signal as two sequential input image signals; performing a first correction (DCC) and a doubling for the current image signal to generate a correction image signal comprising a plurality of doubled frames for the current image signal; and post-processing the portion of the plurality of doubled frames to generate a final correction image signal.
    Type: Application
    Filed: August 12, 2013
    Publication date: August 21, 2014
    Inventors: Nam-Gon CHOI, Yong Jun Jang, Jung-Won Kim, Geun Jeong Park, Ji-Woong Jeong, UK Chul Choi, Joon-Chul Goh, Cheol Woo Park, Bong Hyun You
  • Patent number: 8803855
    Abstract: A liquid crystal display includes a plurality of pixels. Each pixel of the plurality of pixels includes a gate line which receives a gate signal; a data line which receives a data voltage; a first sub-pixel including a first transistor connected to the gate line and the data line, wherein the first transistor outputs the data voltage in response to the gate signal; and a first liquid crystal capacitor connected to the first transistor. Each pixel further includes a second sub-pixel including a second transistor connected to the gate line and the data line, wherein the second transistor outputs the data voltage in response to the gate signal; and a second liquid crystal capacitor connected to the second transistor; a resistor connected to the second transistor; and a first sharing capacitor connected to the resistor, wherein the first sharing capacitor receives the data voltage through the resistor.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: August 12, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joon-Chul Goh, Young-Soo Yoon, Soo-Wan Yoon, Chongchul Chai
  • Publication number: 20140218347
    Abstract: In a liquid crystal display one pixel is divided into two subpixels, the two subpixels are connected to two subdata lines extending from one data line, and a desired data voltage is applied by using a data driving switching element connected to the subdata line, thereby reducing the number of data lines needed to reduce the cost of the driver and preventing a lack of space to mount the data driver while dividing one pixel into two subpixels and differently applying voltages of the two subpixels.
    Type: Application
    Filed: January 29, 2014
    Publication date: August 7, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: CHEOL-GON LEE, Chong Chul Chai, Joon-Chul Goh, Yeong-Keun Kwon, Jong Hee Kim
  • Patent number: 8772779
    Abstract: A display substrate includes a driving element, a switching element, a gate line, a data line, a driving voltage line and an electroluminescent element. The driving element includes a driving control electrode formed from a first conductive layer, and a driving input electrode and a driving output electrode formed from a second conductive layer. The switching element includes a switching control electrode formed from the second conductive layer, and a switching input electrode and a switching output electrode formed from a third conductive layer. The gate and data lines are formed from the second and third conductive layers, respectively. The driving voltage line is formed from the third conductive layer. Thus, misalignment between upper and lower patterns may be prevented to improve the reliability of a manufacturing process and increase an aperture ratio, thereby enhancing display quality.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: July 8, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-Chul Jung, Baek-Woon Lee, Joon-Chul Goh
  • Patent number: 8724066
    Abstract: A liquid crystal display includes: a first substrate having pixels, each pixel including a display area and a non-display area; a second substrate facing the first substrate and including a common electrode; and a liquid crystal layer disposed between the first substrate and the second substrate. Each pixel includes a first transistor, a second transistor, a main pixel electrode having a first connection part electrically connected to the first transistor, and a sub-pixel electrode having a second connection part electrically connected to the second transistor. The first and second connection parts are disposed in the non-display area. A protective layer is disposed between the first connection parts the first transistors and between second connection parts and the second transistors.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: May 13, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Sun Kim, Seongyoung Lee, Chongchul Chai, Joon-Chul Goh, Young-Soo Yoon
  • Patent number: 8675157
    Abstract: Provided are a thin-film transistor (TFT) display panel in which grayscale inversion at sides of the TFT display panel is controlled to improve color at sides thereof due to the shifting of chromaticity coordinates, and a liquid crystal display (LCD) including the TFT display panel. The TFT display panel includes a first pixel electrode corresponding to a first pixel, a second pixel electrode corresponding to a second pixel, and a third pixel electrode corresponding to a third pixel, wherein each of the first through third pixel electrodes includes a first subpixel electrode and a second subpixel electrode which receive different data voltages from the data lines, and saw-toothed fine patterns are formed on oblique edges of the first subpixel electrode of the first pixel electrode.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: March 18, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seong-Young Lee, Jae-Ho Choi, Joon-Chul Goh, Young-Soo Yoon
  • Publication number: 20140049458
    Abstract: A display device includes: a first switching element which transmits a first data voltage; a second switching element which transmits a second data voltage; a driving transistor connected to the first switching element and the second switching element, where the driving transistor is driven based on the first data voltage and the second data voltage; and an organic light emitting diode connected to the driving transistor, where the organic light emitting diode emits light based on an output of the driving transistor, and a driving method thereof.
    Type: Application
    Filed: January 15, 2013
    Publication date: February 20, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Se Hyoung CHO, Joon-Chul GOH, Jong-Hee KIM, Cheol-Gon LEE, Jae Keun LIM, Ho Yong JUNG, Chong Chul CHAI
  • Publication number: 20140009709
    Abstract: Provided is a liquid crystal display. The liquid crystal display includes: a substrate; a gate line, a common electrode line and a data line formed on the substrate; an insulating layer formed on the gate line, the common electrode line and the data line; a pixel electrode formed on the insulating layer; a microcavity formed on the pixel electrode and including a liquid crystal injection hole; a common electrode formed on the microcavity; a support member formed on the common electrode; and a capping layer formed on the support member and covering the liquid crystal injection hole, in which the common electrode line and the common electrode are connected to each other through a contact hole formed in a passivation layer.
    Type: Application
    Filed: November 14, 2012
    Publication date: January 9, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Keun LIM, Joon-Chul GOH, Se Hyoung CHO, Chong Chul CHAI
  • Publication number: 20140002509
    Abstract: A method of driving a display device includes displaying an image corresponding to a left eye image signal during a first frame set including one or more frames and displaying an image corresponding to a right eye image signal during a second frame set including one or more successive frames, in which the first frame set and the second frame set include at least one frame displaying a first image according to a first gamma curve and at least one frame displaying a second image according to a second gamma curve, and the first frame set and the second frame set include two successive frames displaying the second image.
    Type: Application
    Filed: December 3, 2012
    Publication date: January 2, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung-Won KIM, Joon-Chul Goh, Bong Hyun You, Uk Chul Choi
  • Patent number: 8610648
    Abstract: A display device having a plurality of pixels, each pixel includes a light-emitting element, a storage capacitor, a driving transistor, a first switching transistor which supplies a data voltage to the storage capacitor in response to an on-voltage of a scanning signal, a second switching transistor which diode-connects the driving transistor in response to an on-voltage of a compensation signal, and a third switching transistor which supplies a driving voltage to the driving transistor in response to an on-voltage of a light emitting signal. The storage capacitor stores a control voltage depending on a threshold voltage of the driving transistor when the driving transistor is diode-connected, transmits the control voltage and the data voltage to the control terminal of the driving transistor, and a period in which the compensation signal is in an on-voltage state is longer than a period in which the scanning signal is in an on-voltage state.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: December 17, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joon-Chul Goh, Young-Soo Yoon, Chong-Chul Chai
  • Publication number: 20130321483
    Abstract: A display device includes a memory which stores gamma data for gamma curves including a first gamma curve and a second gamma curve; a gray voltage generator which generates gray voltages based on the gamma data; a data driver which receives an input image signal from a signal controller and converts the input image signal into a data voltage using the gray voltages; and a display panel including pixels which receives the data voltage and may display an image, where the pixel displays images corresponding to the input image signal during one frame set, one frame set includes consecutive frames, the images displayed by a pixel includes first and second images displayed based on the first and second gamma curves, respectively, a luminance of the first image is not less than a luminance of the second image, and the second image is displayed in two consecutive frames.
    Type: Application
    Filed: November 30, 2012
    Publication date: December 5, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Bong Hyun You, Joon-Chul Goh, Uk Chul Chol, Jung-Won Kim, Nam-Gon Choi, Dong-Won Park
  • Publication number: 20130313582
    Abstract: A monolithically integrated display panel is formed to include a substrate, a first electrode disposed on the substrate, a partitioning member disposed above the first electrode where the partitioning member defines a substantially containerizing volume for a to-be-introduced and then later selectively removed sacrificial member, a light attribute controlling material disposed in the containerizing volume and replacing the selectively removed sacrificial member, where an upper width of the light attribute controlling material is substantially different in dimension than a lower width of the light attribute controlling material, and a second electrode disposed above the light attribute controlling material and insulated from the first electrode.
    Type: Application
    Filed: November 2, 2012
    Publication date: November 28, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young-Joon CHO, Joon-Chul GOH, Yeun-Tae KIM, Nak-Cho CHOI
  • Publication number: 20130314451
    Abstract: A method of driving a display panel includes receiving an input image data, based on which the display panel displays an image, outputting a first image data during N frames corresponding to a first reference time and outputting a second image data during M frames corresponding to a second reference time based on a inversion signal, where N and M are natural number, the first image data has a first polarity equal to a polarity of the input image data, and the second image data has a second polarity inverted from the polarity of the input image data, and skipping a first frame of the first image data and a first frame of the second image data based on the inversion signal.
    Type: Application
    Filed: November 13, 2012
    Publication date: November 28, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong-Hee KIM, Joo-Young KIM, Joon-Chul GOH, Cheol-Gon LEE, Se-Hyoung CHO, Chong-Chul CHAI
  • Patent number: 8497820
    Abstract: The present invention relates to a display device and a driving method thereof. A display device in the present invention comprises: a capacitor connected between a first node and a second node; a switching transistor controlled by a first scanning signal and transmitting a data voltage to the first node; an emission control transistor controlled by a second scanning signal and transmitting a reference voltage to the second node; a driving transistor comprising a control terminal connected to the first node, an output terminal connected to the second node, and an input terminal; a driving control transistor controlled by a third scanning signal and transmitting a driving voltage to the input terminal of the driving transistor; and a light-emitting device connected to the second node. Accordingly, display contrast of a display device may be improved.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: July 30, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joon-Chul Goh, Young-Soo Yoon, Chong-Chul Chai
  • Patent number: 8487843
    Abstract: A display device and a method of driving the display device are provided. The threshold voltage of a driving transistor is compensated such that even when the threshold voltage of the driving transistor is varied, the emission of light with respect to a predetermined data voltage occurs with a predetermined luminance, based on a diode-connected compensation transistor and a plurality of switching transistors.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: July 16, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joon-Chul Goh, Chong-Chul Chai, Young-Soo Yoon, Sei-Hyoung Jo
  • Publication number: 20130093658
    Abstract: A display device includes gate lines, data lines, first wires and second wires extending in the directions of the gate lines and data lines, and pixels having a first subpixel and a second subpixel each. The first subpixel has a first subpixel electrode and a first switching element, and the second subpixel has a second subpixel electrode and second and third switching elements. The control terminals of the three switching elements are connected to the same gate line, and the input terminals of the first and second switching elements are connected to the same data line. The first and second switching elements have output terminals connected to the first and second subpixel electrodes, respectively. The second switching element's output terminal connects to the third switching element, which has an output terminal connected to a second wire. The first wires and the second wires are connected in a pixel.
    Type: Application
    Filed: June 14, 2012
    Publication date: April 18, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Hwa PARK, Yeo Geon YOON, Jang-Il KIM, Kyung Ho KIM, Jong-In KIM, Min-Wook PARK, Bum Ki BAEK, Joon-Chul GOH, Young-Soo YOON, Hak Bum CHOI, Hyo-Seop KIM
  • Publication number: 20130077002
    Abstract: A liquid crystal display includes first and second sub-pixels charged with the same voltage during a first period. The voltage charged in the second sub-pixel is decreased after the first period. Since the voltage level of the first sub-pixel is different from the voltage level of the second sub-pixel after the first period, liquid crystal molecules disposed corresponding to the first sub-pixel are aligned in a direction different from that of liquid crystal molecules disposed corresponding to the second sub-pixel. Thus, a side viewing angle of the liquid crystal display is improved.
    Type: Application
    Filed: April 9, 2012
    Publication date: March 28, 2013
    Inventors: Young-Soo YOON, Joon-Chul GOH, Sang-Uk LIM, Chongchul CHAI
  • Patent number: 8373814
    Abstract: An approach of a circuit configuration is provided for operating a display panel and a liquid crystal display with high aperture ratio, transmittance and visibility, the circuit configuration includes: a gate line; a data line intersecting the gate line; a first transistor connected to the gate line and the data line; a second transistor connected to the gate line and the data line; a storage electrode line separated from the gate line; a third transistor connected to the storage electrode line and the second transistor; a first pixel electrode connected to the first transistor; and a second pixel electrode connected to the second transistor and the third transistor. The third transistor being separated from an additional gate line is connected to the storage electrode line such that the aperture ratio can be increased, and visibility and transmittance can be enhanced.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: February 12, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang-Chul Jung, Young-Soo Yoon, Joon-Chul Goh, Chong-Chul Chai