Patents by Inventor Chun-Seok Ko

Chun-Seok Ko 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: 7915616
    Abstract: A display device includes a first pixel and a second pixel. The first pixel and the second pixel are defined by a first gate bus line, a second gate bus line, a first power supply line and a second power supply line. A data bus line between the first supply line and the second supply line divides the first pixel from the second pixel line. Accordingly, the pixel shares a data bus line or a power supply line with adjacent pixel. Advantageously, thereby, more space between lines prevents defects caused during fabricating the display device and improve a reliability of the display device.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: March 29, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: In-Su Joo, Chun-Seok Ko, Kwang-Chul Jung
  • Patent number: 7859494
    Abstract: A display device is provided, which includes: a light emitting element; a storage capacitor; a driving transistor supplying driving current to the light emitting element to emit light; a first switching transistor applying a data voltage to the driving transistor and the storage capacitor in response to a first scanning signal, a light sensor sensing amount of light according to the light emission of the light emitting element and generates a sensing signal depending on the sensed light amount; and a signal controller determining luminance corresponding to the sensing signal, comparing the determined luminance and a target luminance corresponding to the data voltage, and modifies an image signal.
    Type: Grant
    Filed: January 3, 2005
    Date of Patent: December 28, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-Hoo Choi, Jong-Moo Huh, In-Su Joo, Chun-Seok Ko
  • Patent number: 7843520
    Abstract: A display apparatus includes a plurality of pixel regions. Each of the pixel regions includes a first sub-pixel region, a second sub-pixel region and a boost capacitor. The first sub-pixel region and the second sub-pixel region are electrically connected to the boost capacitor. The boost capacitor causes voltages the first and second sub-pixel regions to be at different voltages to increase the viewing angle of the display apparatus. One electrode of the boost capacitor, a coupling electrode, is formed over a storage capacitance line made of an opaque metal such that an additional boost capacitor (Cboost) may be formed without decreasing the aperture ratio of the pixel region. Other features are also provided.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: November 30, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jiangang Lu, Sung-Woon Kim, Seung-Hoon Lee, Hee-Seop Kim, Chun-Seok Ko, Mee-Hye Jung, Si-Duk Sung, Kwang-Chul Jung
  • Patent number: 7812799
    Abstract: A display device capable of expressing gradations with improved accuracy is presented. The device includes: a switching thin film transistor (TFT) and a driving TFT on an insulating substrate; a first electrode electrically connected with the driving TFT; a light emitting layer; a second electrode that supplies a common voltage to the light emitting layer; and a data driver that supplies the switching TFT with a data voltage ranging from a first voltage to a second voltage. The first voltage, the second voltage and the common voltage satisfy the equations: 1) First voltage?common voltage?voltage dropped by light emitting layer=black voltage±0.1|black voltage?white voltage|; 2) Second voltage?common voltage?voltage dropped by light emitting layer=white voltage±0.1|black voltage?white voltage|. The black voltage and the white voltage refer to gate-source voltages (VGS) that express the lowest gradation and the highest gradation, respectively.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: October 12, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chun-seok Ko, Baek-woon Lee
  • Patent number: 7773057
    Abstract: A display device is provided, which includes: light emitting elements; switching transistors transmitting data signals in response to scanning signals; driving transistors, each driving transistor electrically connected to a driving signal line and one of the switching transistors and supplying a current to the light emitting elements in response to an output signal of the one of the switching transistors and the driving signal of the driving signal line; and a first capacitor electrically connected between each driving transistor and each driving signal line; and a second capacitor electrically connected between each light emitting element and each driving transistor, wherein the first and the second capacitors transmit the driving signal by capacitive coupling.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: August 10, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-Hoo Choi, Jong-Moo Huh, In-Su Joo, Chun-Seok Ko, Beohm-Rock Choi
  • Patent number: 7767474
    Abstract: A drive film, a drive package for an organic light emitting diode display, an organic light emitting diode display including the same, and a method thereof are provided wherein the drive film includes a base film having an input terminal and an output terminal, a plurality of first signal lines formed on the base film, and a plurality of second signal lines formed on the base film and disposed between the first signal lines at the output terminal.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: August 3, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chun-Seok Ko, Nam-Deog Kim
  • Patent number: 7742025
    Abstract: A display apparatus includes a plurality of pixels arranged in a matrix. Each pixel includes a light emitting device, a driving transistor for supplying a driving current to the light emitting device, a first switching transistor coupled with the control terminal of the driving transistor to transmit a data voltage, and a second switching transistor coupled with the control terminal of the driving transistor to transmit a reverse voltage. The first and second switching transistors are alternately coupled with scanning lines driven by one of two scanning drivers, and are alternately turned on at different times. The display apparatus periodically applies the reverse voltage to the driving transistors to turn off the diving transistors and to compensate for variation of the threshold voltage of the driving transistors.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: June 22, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Si-Duk Sung, Kyong-Tae Park, Nam-Deog Kim, Chun-Seok Ko
  • Publication number: 20100123713
    Abstract: A display device includes a first pixel and a second pixel. The first pixel and the second pixel are defined by a first gate bus line, a second gate bus line, a first power supply line and a second power supply line. A data bus line between the first supply line and the second supply line divides the first pixel from the second pixel line. Accordingly, the pixel shares a data bus line or a power supply line with adjacent pixel. Advantageously, thereby, more space between lines prevents defects caused during fabricating the display device and improve a reliability of the display device.
    Type: Application
    Filed: January 22, 2010
    Publication date: May 20, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: In-Su JOO, Chun-Seok Ko, Kwang-Chul Jung
  • Patent number: 7705530
    Abstract: A display device has an insulating substrate with a first surface and a second surface, a display element having an organic light-emitting layer arranged between two electrodes, a flexible member having a first end connected to the first surface and a second end facing the first end and the first surface, and a first accommodating member having a lower surface substantially parallel with the insulating substrate, a lateral surface extending from the lower surface, and a protruding part extending from the lower surface toward the first end. The first accommodating member includes a through hole, and the flexible member extends through the through hole so the second end is positioned outside the first accommodating member. The insulating substrate is arranged in the first accommodating member, and the protruding part may contact and press against the first end connected to the insulating substrate.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: April 27, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Si-Duk Sung, Chun-Seok Ko
  • Patent number: 7675061
    Abstract: A display device includes a first pixel and a second pixel. The first pixel and the second pixel are defined by a first gate bus line, a second gate bus line, a first power supply line and a second power supply line. A data bus line between the first supply line and the second supply line divides the first pixel from the second pixel line. Accordingly, the pixel shares a data bus line or a power supply line with adjacent pixel. Advantageously, thereby, more space between lines prevents defects caused during fabricating the display device and improve a reliability of the display device.
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: March 9, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: In-Su Joo, Chun-Seok Ko, Kwang-Chul Jung
  • Patent number: 7633746
    Abstract: A display device including supporting members suitable for supporting an organic luminescent display panel is provided. The display device includes a panel assembly displaying images, a first supporting member supporting the panel assembly and contacting a front surface of the panel assembly, and a second supporting member interconnected with the first supporting member, supporting the panel assembly and contacting a rear surface of the panel assembly, wherein the panel assembly is an organic luminescent display panel.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: December 15, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Chun-Seok Ko
  • Publication number: 20090268112
    Abstract: A display apparatus includes a plurality of pixel regions. Each of the pixel regions includes a first sub-pixel region, a second sub-pixel region and a boost capacitor. The first sub-pixel region and the second sub-pixel region are electrically connected to the boost capacitor. The boost capacitor causes voltages the first and second sub-pixel regions to be at different voltages to increase the viewing angle of the display apparatus. One electrode of the boost capacitor, a coupling electrode, is formed over a storage capacitance line made of an opaque metal such that an additional boost capacitor (Cboost) may be formed without decreasing the aperture ratio of the pixel region. Other features are also provided.
    Type: Application
    Filed: November 20, 2008
    Publication date: October 29, 2009
    Inventors: Jiangang Lu, Sung-Woon Kim, Seung-Hoon Lee, Hee-Seop Kim, Chun-Seok Ko, Mee-Hye Jung, Si-Duk Sung, Kwang-Chul Jung
  • Publication number: 20080143655
    Abstract: An organic light emitting device includes a display panel which includes a plurality of pixels, a power supply which generates a driving voltage, an overcurrent detector which detects an overcurrent flowing from the power supply to the display panel, and a driving voltage blocking unit which blocks the driving voltage to the plurality of pixels based on an output signal of the overcurrent detector.
    Type: Application
    Filed: August 10, 2007
    Publication date: June 19, 2008
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventor: Chun-Seok KO
  • Publication number: 20080106538
    Abstract: A display device capable of expressing gradations with improved accuracy is presented. The device includes: a switching thin film transistor (TFT) and a driving TFT on an insulating substrate; a first electrode electrically connected with the driving TFT; a light emitting layer; a second electrode that supplies a common voltage to the light emitting layer; and a data driver that supplies the switching TFT with a data voltage ranging from a first voltage to a second voltage. The first voltage, the second voltage and the common voltage satisfy the equations: 1) First voltage?common voltage?voltage dropped by light emitting layer=black voltage±0.1|black voltage?white voltage|; 2) Second voltage?common voltage?voltage dropped by light emitting layer=white voltage±0.1|black voltage?white voltage|. The black voltage and the white voltage refer to gate-source voltages (VGS) that express the lowest gradation and the highest gradation, respectively.
    Type: Application
    Filed: October 16, 2007
    Publication date: May 8, 2008
    Inventors: Chun-seok KO, Baek-woon Lee
  • Publication number: 20080048953
    Abstract: A display panel includes a display area and a peripheral area, and a power applying terminal portion is formed on the peripheral area. The frame includes a cover portion covering an edge of the display panel, and a power connecting terminal portion formed on an inner surface of the cover portion and electrically connected to the power applying terminal portion. The power supply part is disposed on the frame and supplies a driving power to the power connecting terminal portion.
    Type: Application
    Filed: August 3, 2007
    Publication date: February 28, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.,
    Inventors: Byung-Sik KOH, Chun-Seok KO, Si-Duk SUNG
  • Publication number: 20080024526
    Abstract: An organic light emitting diode (OLED) display and a method of driving the same are provided. The OLED display includes: a plurality of pixels arrayed in a matrix, each of which includes a switching transistor and a driving transistor; a plurality of data lines connected to the switching transistors, which transmit a data voltage to the pixels; a plurality of driving voltage lines that transmit a driving voltage to the driving transistors; a voltage generator that applies the driving voltage to the driving voltage lines; a current sensing unit that senses a driving current that flows from the voltage generator to the driving voltage lines; a gray voltage generator that generates a gray voltage depending on a change in the driving current; and a data driver that converts an input image signal into the data voltage on the basis of the gray voltage and applies the data voltage to the data lines.
    Type: Application
    Filed: June 28, 2007
    Publication date: January 31, 2008
    Inventors: Chun-Seok KO, Byung-Sik Koh, Si-Duk Sung
  • Publication number: 20080018569
    Abstract: An organic light emitting diode display device includes; a display panel including a pixel connected to a gate line and a data line, gate and data driving circuits which drive the gate and data lines, respectively, at least one temperature sensor disposed on the display panel which senses a temperature of the display panel, a sensor driving unit which converts a temperature signal supplied from the temperature sensor into a digital temperature signal, a timing controller which supplies the gate driving circuit with a control signal, supplies the data driving circuit with a control signal and a data signal, and generates a gamma reference voltage control signal according to the digital temperature signal, and a digital to analog converter which generates a gamma reference voltage which varies according to the gamma reference voltage control signal and supplies it to the data driving circuit.
    Type: Application
    Filed: July 16, 2007
    Publication date: January 24, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Si Duk SUNG, Chun Seok Ko, Kyeng Eun Roh
  • Publication number: 20080010876
    Abstract: A display device has an insulating substrate with a first surface and a second surface, a display element having an organic light-emitting layer arranged between two electrodes, a flexible member having a first end connected to the first surface and a second end facing the first end and the first surface, and a first accommodating member having a lower surface substantially parallel with the insulating substrate, a lateral surface extending from the lower surface, and a protruding part extending from the lower surface toward the first end. The first accommodating member includes a through hole, and the flexible member extends through the through hole so the second end is positioned outside the first accommodating member. The insulating substrate is arranged in the first accommodating member, and the protruding part may contact and press against the first end connected to the insulating substrate.
    Type: Application
    Filed: June 20, 2007
    Publication date: January 17, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Si-Duk SUNG, Chun-Seok KO
  • Publication number: 20080012811
    Abstract: A display device includes a plurality of pixels in a matrix form, with each pixel having a switching transistor and a driving transistor, a plurality of data lines coupled with the switching transistors and providing data voltages, a plurality of driving voltage lines providing driving voltages to the drive transistors, a gray voltage generator generating compensated reference gray voltages based on a voltage-drop of the driving voltage, and a data driver providing input image data to the data lines as data voltages based on the compensated reference gray voltage.
    Type: Application
    Filed: July 12, 2007
    Publication date: January 17, 2008
    Inventors: Si-Duk Sung, Chun-Seok Ko
  • Publication number: 20080001940
    Abstract: A display device includes a display panel having a display region formed with a plurality of thin film transistors, a light emitting layer disposed in the display region, and a driver supplying a driving signal including a gate signal and a data signal to the thin film transistors. At least one voltage pad is disposed outside of the display region on the display panel to supply a reference voltage to the display region, a power generator generates the reference voltage, and a flexible film is connected between the voltage pad and the power generator to transmit the reference voltage. At least one of the driver and the power generator includes an external power input unit that receives external power.
    Type: Application
    Filed: June 26, 2007
    Publication date: January 3, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byung-Sik KOH, Chun-Seok KO, Byoung-Seong JEONG, Si-Duk SUNG