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: 7986095
    Abstract: An organic light emitting diode display with enhanced luminance and light uniformity is presented, along with a method of manufacturing the display. The display including: a substrate, a first signal line formed on the substrate and a second signal line extending perpendicularly to the first signal line, and thin film transistors formed on the substrate and electrically coupled to the first signal line and the second signal line. A planarization member is formed on the same layer as the first signal line and/or the second signal line, such that it does not overlap the first signal line, the second signal line, and the thin film transistors. An insulating layer is formed on the first signal line, the second signal line, the thin film transistors, and the planarization member. Two electrodes are formed on the insulating layer connected to one of the thin film transistors and sandwiching a light emitting member.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: July 26, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Soo Rhee, Beohm-Rock Choi, Joon-Chul Goh
  • Patent number: 7965263
    Abstract: A display device and a method of driving the same, win which the display device includes a light emitting element and a driving transistor supplying a driving current to the light emitting element, and in which one of a data voltage or a reverse bias voltage is applied to the driving transistor in an alternating manner, and the reverse bias voltage is an AC voltage.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: June 21, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kunjal Parikh, Kyuha Chung, Nam-Deog Kim, Beohm-Rock Choi, Joon-Chul Goh, Joon-Hoo Choi
  • Patent number: 7943934
    Abstract: A thin film transistor array panel according to an exemplary embodiment of the present invention comprises a substrate; a first signal line and a second signal line disposed on the substrate; a switching thin film transistor connected to the first signal line and the second signal line, and comprising a first insulating layer; a driving thin film transistor connected to the switching thin film transistor and comprising a second insulating layer; and a discharge thin film transistor connected to one of the first signal line and the second signal line, and comprising the first insulating layer and the second insulating layer.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: May 17, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Soo Yoon, Chong-Chul Chai, Joon-Chul Goh
  • Patent number: 7935578
    Abstract: The present invention relates to a TFT, a TFT array panel, and a method of manufacturing the TFT array panel. A method of manufacturing the TFT array panel includes the steps of forming a first electrode and a second electrode that are separated from each other on a substrate, forming a silicon layer including amorphous silicon and polycrystalline silicon on the substrate, forming a semiconductor by patterning the silicon layer, forming a gate insulating layer on the semiconductor, forming a third electrode that is opposite to the semiconductor on the gate insulating layer, forming a passivation layer on the third electrode, and forming a pixel electrode on the passivation layer. The TFT array panel has high mobility because the TFT include polycrystalline silicon at the channel region of the TFT.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: May 3, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-Hoo Choi, Joon-Chul Goh, Beohm-Rock Choi
  • Patent number: 7897965
    Abstract: A display substrate includes a gate wire, a data wire which crosses the gate wire, a display part, a dummy pixel part and a test part. The display part includes a pixel element electrically connected to the gate wire and the data wire, and the pixel element includes a display element. The dummy pixel part surrounds the display part to protect the pixel element from static electricity. The test part is formed adjacent to the display part and includes a test element having a test display element formed in a substantially same manner as the display element.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: March 1, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Soo Yoon, Joon-Chul Goh, Chong-Chul Chai
  • Publication number: 20110013105
    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: Application
    Filed: July 9, 2010
    Publication date: January 20, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kwang-Chul Jung, Young-Soo Yoon, Joon-Chul Goh, Chong-Chul Chai
  • Patent number: 7864141
    Abstract: A display device and a driving method thereof are provided. The display device comprises a plurality of pixels, each pixel includes: a light emitting element; a storage capacitor; a driving transistor that has a control terminal, an input terminal, and an output terminal and supplies a current to the light emitting element to emit light; a first switching transistor for supplying a data voltage to the storage capacitor in response to a scanning signal; a second switching transistor for diode-connecting the driving transistor in response to a previous scanning signal; and a third switching transistor for supplying a driving voltage to the driving transistor in response to an emission signal, wherein the storage capacitor stores a control voltage depending on a threshold voltage of the driving transistor and a threshold voltage of the light emitting element through the diode-connected driving transistor, and transmits the control voltage and the data voltage to the control terminal of the driving transistor.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: January 4, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Joon-Chul Goh
  • Patent number: 7858974
    Abstract: An organic light-emitting display panel having a storage capacitor comprised of a storage electrode overlapping a power line with a first gate-insulating layer disposed therebetween, wherein the storage capacitor includes a groove portion formed on a lateral side of the power line overlapping the storage electrode so that the overlapping area of the power line and the storage electrode is kept constant, and a method of manufacturing the same.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: December 28, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young Soo Yoon, Joon Chul Goh, Beohm Rock Choi
  • Patent number: 7855505
    Abstract: A display device includes an insulating substrate having a display area, a line part including a data line and a gate line insulated from and crossing each other, a common voltage supplying part formed outside an outer circumference of the display area, an insulating layer formed on the common voltage supplying part and including a contact hole formed on an area in which some lines of the line part extend substantially in parallel with each other, and a common electrode electrically connected with the common voltage supplying part exposed through the contact hole.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: December 21, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang-chul Jung, Beohm-rock Choi, Joon-chul Goh
  • Patent number: 7842944
    Abstract: An organic light emitting diode (“OLED”) display includes a substrate, a gate line, a data line, a driving voltage line, a light blocking member, a switching thin film transistor (“TFT”), a driving TFT, and an OLED, wherein the driving voltage line includes a portion parallel to at least one of the gate line and the data line, the light blocking member is formed under at least one of the gate line, the data line, and the driving voltage line, the switching TFT is connected to the gate line and the data line and includes an amorphous semiconductor, the driving TFT is connected to the switching TFT and includes a polycrystalline semiconductor, and the OLED is connected to the driving TFT.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: November 30, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-Hoo Choi, Jong-Moo Huh, Joon-Chul Goh, Seung-Kyu Park, Kwang-Chul Jung
  • Patent number: 7839366
    Abstract: The present invention relates to a display device that includes a plurality of light-emitting elements that emit different-colored light, a plurality of driving transistors that supply driving currents to the light-emitting elements so that the light-emitting elements emit light, and a plurality of sense transistors that are exposed to the light-emitting elements and that generate a photocurrent on the basis of light emission of the light-emitting elements. The sense transistors corresponding to the light-emitting elements that emit light having different colors have different sizes from each other.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: November 23, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang-Chul Jung, Joon-Chul Goh, Joon-Hoo Choi
  • Publication number: 20100225627
    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: Application
    Filed: September 14, 2009
    Publication date: September 9, 2010
    Inventors: Joon-Chul Goh, Kwang-Chul Jung, Chong-Chul Chai, Mee-Hye Jung, Young-Soo Yoon
  • Patent number: 7772767
    Abstract: A display device includes; first, second and third pixel electrodes, each of the first, the second and the third pixel electrodes comprising a first edge and a second edge longer than the first edge, a first, a second and a third electrode connected to the first, second and third pixel electrodes respectively, a fourth electrode opposing the first electrode with respect to a fifth electrode, a sixth electrode opposing the second electrode with respect to a seventh electrode, and an eighth electrode opposing the third electrode with respect to a ninth electrode, wherein each of the first, fourth and fifth electrodes include a first portion disposed between the first and second pixel electrode and a second portion disposed outside of a space between the first and second pixel electrode, and the second, the sixth and the seventh electrodes are disposed outside of a space between the second and third pixel electrode.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: August 10, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang-Chul Jung, Beohm-Rock Choi, Joon-Chul Goh
  • Patent number: 7772764
    Abstract: A display device and a method of manufacturing the display device are provided. The display device includes a substrate; a driving voltage line disposed on the substrate; a driving voltage line pad to transmit a driving voltage to the driving voltage line; a driving transistor connected to the driving voltage line; a pixel electrode connected to the driving transistor; a common electrode opposing the pixel electrode; a light emitting member disposed between the pixel electrode and the common electrode; and a common electrode pad disposed on the substrate so as to transmit a common voltage to the common electrode. The common electrode pad and the driving voltage line pad are exposed at a side surface of the substrate.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: August 10, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-Chul Goh, Beohm-Rock Choi, Jung-Soo Rhee, Joon-Hoo Choi, Kwang-Chul Jung
  • Patent number: 7759858
    Abstract: A display device includes an insulating substrate having a display region formed with a display unit, a wire having power supply, data, and gate lines, a circuit board connected to a first edge of the substrate parallel to the gate line and supplying common and driving voltages to the display unit, a driving voltage supplying part provided between a second edge opposite the first edge and the display region, and connected to the power supply line, a driving voltage transmitting part connecting the circuit board to the driving voltage supplying part, and a common voltage supplying part formed between the circuit board and the display region supplying the common voltage to the display unit.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: July 20, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang-chul Jung, Beohm-rock Choi, Joon-chul Goh, Young-soo Yoon
  • Patent number: 7742029
    Abstract: A display device with improved brightness and a method of controlling the display device are presented. The display device includes a driving transistor, a pixel electrode electrically connected to the driving transistor, a detecting transistor detecting a magnitude of an electric signal transferred from the driving transistor to the pixel electrode, and a controller. The controller regulates a data voltage applied to the pixel electrode based on a difference between the detected electric signal and a predetermined reference level. The display device achieves improved homogeneity of brightness by compensating for any deterioration of TFTs.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: June 22, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang-chui Jung, Joon-chul Goh, Young-soo Yun, Beohm-rock Choi
  • Patent number: 7728325
    Abstract: A display device includes an insulating substrate including a display region, at least one pad disposed in a non-display region on the insulating substrate which applies a voltage to the display region, a connecting part which is electrically connects at least two pads or at least two portions of the pad; and a power supply unit which applies the voltage to the pad.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: June 1, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang-chul Jung, Beohm-rock Choi, Joon-chul Goh
  • Publication number: 20100123697
    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: Application
    Filed: May 19, 2009
    Publication date: May 20, 2010
    Inventors: Joon-Chul Goh, Chong-Chul Chai, Young-Soo Yoon, Sei-Hyoung Jo
  • Publication number: 20100110047
    Abstract: An output part outputs a high voltage of a first clock signal as a high voltage of an (m)-th gate signal (‘m’ is a natural number) and a low voltage in response to a high signal of an (m+1)-th gate signal outputted from an (m+1)-th stage. A first maintenance part maintains a control part of the pull-up part at a low voltage in response to an (m?1)-th node signal or an (m+1)-th node signal lower than a high signal of a second clock signal having a phase opposite to the phase of the first clock signal received from an (m?1)-th stage or the (m+1)-th stage. A second maintenance part maintains the low voltage of the (m)-th gate signal in response to the (m?1)-th node signal or the (m+1)-th node signal.
    Type: Application
    Filed: July 23, 2009
    Publication date: May 6, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Soo-Wan YOON, Joon-Chul GOH, Chong-Chul CHAI, Young-Soo YOON, Sei-Hyoung JO
  • Publication number: 20100103083
    Abstract: An organic light emitting device including a display panel including a plurality of pixels respectively including a driving transistor and an organic light emitting element; a driving unit to supply a driving signal to the display panel; a signal controller to control the driving unit; a signal modification unit to modify an input image signal based on modification information to generate a modified image signal; and a modification controller to generate and provide the modification information to the signal modification unit. The signal modification unit includes a first modification unit to convert the input image signal into a first modified signal according to first modification information generated based on a characteristic deviation of the driving transistor, and a second modification unit to convert the first modified signal into a second modified signal according to second modification information generated based on a characteristic deviation of the organic light emitting element.
    Type: Application
    Filed: June 11, 2009
    Publication date: April 29, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyoung-Ju SHIN, Chong-Chul Chai, Joon-Chul Goh