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).

  • Publication number: 20160116785
    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: December 28, 2015
    Publication date: April 28, 2016
    Inventors: Young-Soo YOON, Joon-Chul GOH, Sang-Uk LIM, Chongchul CHAI
  • Publication number: 20160104424
    Abstract: A pixel, a display device having the same, and a thin film transistor (TFT) substrate for the display device are disclosed. In one aspect, the pixel includes an emitter configured to emit light based at least in part on a driving current. The pixel also includes a driving transistor including an active layer, a first electrode electrically connected to a first end portion of the active layer, a second electrode electrically connected to a second end portion of the active layer, a first gate electrode configured to receive a data voltage from a data driver so as to form a channel in the active layer, and a second gate electrode configured to receive a bias voltage from a voltage source, wherein the channel is configured to adjust the driving current.
    Type: Application
    Filed: March 19, 2015
    Publication date: April 14, 2016
    Inventors: Jae-Keun Lim, Chong-Chul Chai, Joon-Chul Goh, Mu-Kyung Jeon
  • Publication number: 20160078819
    Abstract: A liquid crystal display panel comprises a backlight unit including an optical assembly and configured to differentiate the liquid crystal display panel into a plurality of blocks and to illuminate light to each of the plurality of blocks; a location sensor configured to sense a location of a user watching the liquid crystal display panel; a backlight controller configured to output a dimming value corresponding to a brightness of each of the plurality of blocks according to a result of sensing by the location sensor; and a backlight driver configured to generate a driving current corresponding to the dimming value of each block and to provide the generated driving current to the backlight unit corresponding to each of the plurality of blocks.
    Type: Application
    Filed: June 9, 2015
    Publication date: March 17, 2016
    Inventors: Se-Ki PARK, Yong-Hoon KWON, Bong-Hyun YOU, Joon-Chul GOH
  • Publication number: 20160078254
    Abstract: Display device includes timing controller, display panel, data driver, and scan driver. The timing controller includes an authentication processing unit configured to generate an authentication result based on an authentication control signal. The timing controller converts an input image data signal to data driver control signal and scan driver control signal when the authentication result represents success. The timing controller deactivates the data driver control signal and the scan driver control signal when the authentication result represents fail. The display panel includes plurality of pixels. The data driver generates plurality of data signals based on the data driver control signal and provides the data signals to the pixels through plurality of data signal lines. The scan driver generates plurality of scan signals based on the scan driver control signal and provides the scan signals to the pixels through plurality of scan signals lines.
    Type: Application
    Filed: February 19, 2015
    Publication date: March 17, 2016
    Inventors: Yun-Ki BAEK, Ho-Seok SON, Joon-Chul GOH, Mun-San PARK
  • Publication number: 20160065793
    Abstract: Gamma applied data generating circuit includes motion vector extractor, gamma pattern generator, first gamma applier, second gamma applier, and output converter. Motion vector extractor extracts motion vector of object. Gamma pattern generator generates first gamma pattern corresponding to first motion vector value and second gamma pattern corresponding to second motion vector value from first time point. Value of motion vector is changed from first motion vector value to second motion vector value at first time point. First and second gamma appliers generate first and second data by applying first and second gamma pattern to input data, respectively. Output converter outputs sum of first data times first weight and second data times second weight as gamma applied data. From first time point to second time point, output converter converts first weight from 1 to 0 and converts second weight from 0 to 1.
    Type: Application
    Filed: January 20, 2015
    Publication date: March 3, 2016
    Inventors: Dong-Gyu LEE, Joon-Chul GOH, Nam-Gon CHOI, Cheol-Woo PARK, Bong-Hyun YOU
  • Publication number: 20160063914
    Abstract: A display apparatus includes a timing controller, a data driver and a display panel. The timing controller receives input image data at a first frequency substantially equal to a frame rate of an input image. The timing controller generates a data signal having the first frequency based on the input image data having the first frequency. The data driver converts the data signal into a data voltage. The display panel displays an image based on the data voltage.
    Type: Application
    Filed: April 20, 2015
    Publication date: March 3, 2016
    Inventors: Kyoung-Won LEE, Su-Hyeong PARK, Mun-San PARK, Joon-Chul GOH, Woo-Mi BAE
  • Patent number: 9268428
    Abstract: A light-sensing apparatus in which a light sensor transistor in a light-sensing pixel is formed of an oxide semiconductor transistor for sensing light, a method of driving the light-sensing apparatus, and an optical touch screen apparatus including the light-sensing apparatus. The light-sensing apparatus includes a light-sensing pixel array having a plurality of light-sensing pixels arranged in rows and columns, and a plurality of gate lines which are arranged in a row direction and respectively provide a gate voltage to the light-sensing pixel. Each of the light-sensing pixels includes a light sensor transistor for sensing light and a switch transistor for outputting a light-sensing signal from the light sensor transistor, and gates of the light sensor transistors of the light-sensing pixels arranged in an arbitrary row are connected to a gate line arranged in a row previous or next to the arbitrary row.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: February 23, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Kim, I-hun Song, Sang-hun Jeon, Seung-eon Ahn, Joon-chul Goh, Cheol-gon Lee
  • Patent number: 9261749
    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: Grant
    Filed: January 7, 2015
    Date of Patent: February 16, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Hwa Park, Jong-In Kim, Yeo Geon Yoon, Min-Wook Park, Jang-Il Kim, Joon-Chul Goh, Hyo-Seop Kim, Bum Ki Baek, Young-Soo Yoon, Hak Bum Choi, Kyung Ho Kim
  • Patent number: 9257088
    Abstract: A display panel includes: a first pixel including: a first high pixel configured to represent a first high gray level; and a first low pixel configured to represent a first low gray level; and a second pixel adjacent the first pixel in a first direction, the second pixel including: a second high pixel configured to represent a second high gray level based on a second data voltage and the common voltage in response to the first gate signal; and a second low pixel configured to represent a second low gray level based on the second data voltage, the common voltage, and a second divided voltage different from the first divided voltage in response to the first gate signal.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: February 9, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Hyoung Cho, Joon-Chul Goh, Mee-Hye Jung
  • Publication number: 20160027370
    Abstract: A display apparatus includes a display panel comprising a data line, a gate line crossing the data line and a sub pixel connected to the data line and the gate line, a moving vector extractor configured to extract a moving vector of an input image using input data, a data generator configured to generate data of a high gamma curve called “high data” and data of a low gamma curve called “low data” corresponding to the input data using a spatiotemporal sequential pattern based on moving direction and moving speed of the moving vector, and a data driver circuit configured to covert the high data and the low data of the input data into a data voltage and provide the data line with the data voltage.
    Type: Application
    Filed: December 12, 2014
    Publication date: January 28, 2016
    Inventors: Dong-Gyu Lee, Joon-Chul Goh, Sang-Ik Lee
  • Publication number: 20160019852
    Abstract: A display apparatus includes a display panel and a first gate driver. The display panel includes a plurality of data lines extending in a first direction, and a plurality of gate lines extending in a second direction obliquely inclined toward the first direction and spaced apart from each other in a third direction crossing the second direction. The plurality of gate lines includes a first gate line group and a second gate line group respectively disposed in first and second display areas of the display panel. The first gate driver is configured to drive at least one gate line of the second gate line group while driving at least one gate line of the first gate line group.
    Type: Application
    Filed: June 10, 2015
    Publication date: January 21, 2016
    Inventors: JUNG-TAEK KIM, JOON-CHUL GOH, SANG-IK LEE, KYOUNG-HO LIM
  • Publication number: 20160005357
    Abstract: A display panel includes a gate line extending in a column direction, a data line extending in a row direction, a pixel including a switching transistor connected to the gate line and the data line, and a voltage applier connected to a gate line of a present stage. The voltage applier to apply a voltage after conversion of the gate-on voltage to a gate-off voltage has started. The voltage is closer to the gate-on voltage than the gate-off voltage.
    Type: Application
    Filed: November 19, 2014
    Publication date: January 7, 2016
    Inventors: Se Hyoung CHO, Joon-Chul GOH, Jang Mi KANG, Sung Hwan KIM, Il Gon KIM, Sang Hyeon SONG, Mee Hye JUNG
  • Publication number: 20160005365
    Abstract: A display device includes a timing controller, a data driver, and a display panel. The timing controller includes a first compensator receiving a first image data, selecting a temperature compensation value in accordance with the external temperature, and converting the first image data to a second image data on the basis of the selected temperature compensation value and a second compensator selecting a kickback voltage compensation value predetermined in accordance with the areas of the display panel and converting the second image data to the output image data on the basis of the kickback voltage compensation value selected in accordance with the areas.
    Type: Application
    Filed: April 6, 2015
    Publication date: January 7, 2016
    Inventors: Nam-Gon CHOI, Joon-Chul GOH, Gigeun KIM, Byungsun KIM, Jung-Won KIM, HongSoo KIM, Donggyu LEE, Jakyoung JIN, Bonghyun YOU
  • Patent number: 9230488
    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: Grant
    Filed: December 3, 2012
    Date of Patent: January 5, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung-Won Kim, Joon-Chul Goh, Bong Hyun You, Uk Chul Choi
  • Patent number: 9223182
    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: Grant
    Filed: April 9, 2012
    Date of Patent: December 29, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young-Soo Yoon, Joon-Chul Goh, Sang-Uk Lim, Chongchul Chai
  • Publication number: 20150301580
    Abstract: According to an embodiment, the display device includes a touch controller, an image processor, and a display driver. The touch controller is configured to output touch event information corresponding to a touch signal received from a touch panel. The image processor is configured to determine whether a host is in a sleep mode or a normal mode, and to output mixed image data obtained by overlapping an image displayed on a display panel and a marker corresponding to the touch event information while a host is in the sleep mode. The display driver is configured to output pixel driving signals corresponding to the mixed image data to the display panel. The touch controller or image processor is further configured to determine whether a touch input of a user to the touch panel meets a predetermined condition, and if the predetermined condition is met, output a wake-up signal to the host.
    Type: Application
    Filed: February 26, 2015
    Publication date: October 22, 2015
    Inventors: Weon-Jun CHOE, Joon-Chul GOH, Yun-Ki BAEK, Hae-Kwan SEO, Myeong-Su KIM, Jae-Wan PARK
  • Publication number: 20150262554
    Abstract: Provided is a display device including: a display panel, a timing controller, a gate driver, and a data driver. The display panel includes a display area configured to display an image and a non-display area adjacent to one side of the display area. The display area includes oblique lines, intersectional lines crossing and isolated from at least a part of the oblique lines, and pixels. Pixels coupled to the oblique lines or the intersectional lines and arranged along a line in one direction are defined into pixel rows. The display area further includes a plurality of areas divided by the pixel rows being successive. The number of pixels constituting one of adjacent ones of the pixel rows in at least one of the plurality of areas is different from the number of pixels constituting another thereof.
    Type: Application
    Filed: September 11, 2014
    Publication date: September 17, 2015
    Inventors: Dong-Won Park, Joon-Chul Goh, Bonghyun You, KyoungHo Lim, Sangjin Jeon, Junki Jeong
  • Publication number: 20150243217
    Abstract: Provided is a pixel including an organic light emitting diode, a driving circuit, and a light receiving circuit. The driving circuit is configured to supply a driving current corresponding to a data signal supplied through a data line during a scan period to the organic light emitting diode during an emission period, and to supply a first sensing current corresponding to threshold voltage/mobility information of a driving transistor or degradation information of the organic light emitting diode to a feedback line during a current sensing period. The light receiving circuit is configured to supply a second sensing current corresponding to luminance of the organic light emitting diode to the feedback line during the emission period.
    Type: Application
    Filed: January 29, 2015
    Publication date: August 27, 2015
    Inventors: Dong-Won Park, Joon-Chul Goh, Seok-Ha Hong
  • Publication number: 20150243199
    Abstract: An image processor, a display device including the same, and a method for driving display panel using the same are disclosed. In one aspect, the display device includes an image shifter configured to shift a data signal by at least one pixel based at least in part on a shift start signal and output the shifted data signal and a shift direction signal. The display device also includes an image buffer configured to output current data and previous data based at least in part on the shifted data signal and the shift direction signal. The display device also includes an image mixer configured to mix the current data and the previous data over M frames starting at a start frame when the shift start signal is received and output image data, M being a natural number.
    Type: Application
    Filed: December 22, 2014
    Publication date: August 27, 2015
    Inventors: Dong-Gyu Lee, Joon-Chul Goh, Jung-Won Kim, Nam-Gon Choi, Ja-Kyoung Jin
  • Publication number: 20150221273
    Abstract: A liquid crystal display device includes a plurality of pixels arranged substantially in a matrix form, where a part of the plurality of pixels defines a pixel column block, a first scan signal is simultaneously applied to an n-th row pixel and an (n+2)-th row pixel of the pixel column block, a second scan signal, which is applied prior to the first scan signal, is simultaneously applied to an (n+1)-th row pixel and an (n+3)-th row pixel of the pixel column block, a first data voltage is applied to the n-th row pixel and the (n+1)-th row pixel, a second data voltage having a polarity different from a polarity of the first data voltage is applied to the (n+2)-th row pixel and the (n+3)-th row pixel, and the polarities of the first data voltage and the second data voltage are inverted on a frame-by-frame basis.
    Type: Application
    Filed: June 3, 2014
    Publication date: August 6, 2015
    Applicant: Samsung Display Co. Ltd.
    Inventors: Sang Ik LEE, Young Soo YOON, Joon Chul GOH, In Jae HWANG, Byung Sun KIM, Dae Gwang JANG, Seok Ha HONG