Patents by Inventor Si-Duk Sung

Si-Duk Sung 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: 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: 20080012474
    Abstract: A display device includes; an insulating substrate, a display element which defines a display region and includes an organic light emitting layer which is formed on the insulating substrate, a first circuit board disposed parallel with a first side of the insulating substrate, a reference voltage pad formed on a circumference of the display region and which is electrically connected to the display element, and a first flexible member which includes a first part which adheres to the first circuit board and a second part connected to the reference voltage pad along a second side of the face of the insulating substrate.
    Type: Application
    Filed: July 9, 2007
    Publication date: January 17, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Si-duk SUNG, Byung-sik KOH
  • 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
  • Publication number: 20070278952
    Abstract: A display device includes an insulating substrate having an upper surface and a lower surface opposing the upper surface, a display element including a first electrode, an organic light emitting layer on the first electrode, and a second electrode on the organic light emitting layer, a first film connected to a first side of the upper surface, and a first circuit substrate connected to the first film and including a first surface facing the display element, a second surface opposing the first surface, and an electric element protruding from the second surface.
    Type: Application
    Filed: May 30, 2007
    Publication date: December 6, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Si-Duk Sung, Byung-Sik Koh
  • Publication number: 20070236422
    Abstract: A display device includes a first pixel representing a first color, a second pixel representing a second color, a first scanning line connected to the first pixel and transmitting a first scanning signal, a second scanning line connected to the second pixel and transmitting a second scanning signal, a data line connected to the first pixel and the second pixel and transmitting a data voltage, a scanning driver for applying the scanning signal to the scanning line, a gray voltage generator for generating gray voltage sets respective to the different colors of pixels, and a data driver for converting an image signal for the first pixel into a gray voltage selected from the set of gray voltages for the first pixel et and converting a second image signal into a second gray voltage selected from the set of gray voltages for the second pixel and sequentially applying the selected gray voltages to the data line serving the two pixels.
    Type: Application
    Filed: January 18, 2007
    Publication date: October 11, 2007
    Inventors: Kyong-Tae Park, Chun-Seok Ko, Si-Duk Sung, Jung-Nam Park
  • Publication number: 20070222366
    Abstract: A display device including an insulating substrate including a display region, a light emitting layer formed within the display region, a plurality of voltage pads formed in a non-display region of the insulating substrate and supplying a predetermined voltage to the display region, a circuit board connected with a lateral side of the insulating substrate and outputting a voltage to be supplied to the voltage pads, and a printed circuit film connecting the voltage pads and the circuit board. The printed circuit film is partially overlapped with the display region.
    Type: Application
    Filed: March 19, 2007
    Publication date: September 27, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.,
    Inventors: Kyong-tae Park, Si-duk Sung, Dae-jin Park
  • Publication number: 20070176860
    Abstract: A display apparatus includes an insulating substrate having a display region, a light emitting layer formed in the display region, a first voltage pad applying a reference voltage to the display region, the first voltage pad being formed in a non-display region on the insulating substrate, a frame supporting the insulating substrate and including an insulating material, a second voltage pad formed on the frame and electrically connected with the first voltage pad and a power supplying part supplying power to the second voltage pad, the power supplying part being formed on the frame.
    Type: Application
    Filed: February 1, 2007
    Publication date: August 2, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.,
    Inventors: Byung-sik KOH, Chun-seok KO, Si-duk SUNG
  • Publication number: 20070134830
    Abstract: The present description relates to a drive film, a drive package for an organic light emitting diode display, a method of manufacturing thereof, and an organic light emitting diode display including the same. A drive package for an organic light emitting diode display includes a base film including a central region and a peripheral region, a drive circuit chip mounted on the central region of the base film, a plurality of conductors formed on at least one portion of the peripheral region of the base film, and at least one protective film formed on the conductors and exposing both ends of the conductors in a lengthwise direction.
    Type: Application
    Filed: June 16, 2006
    Publication date: June 14, 2007
    Inventors: Kyong-Tae Park, Chun-Seok Ko, Si-Duk Sung
  • Publication number: 20070126683
    Abstract: A display device having light-emitting pixels, a driving transistor that supplies a current to the light-emitting pixels, a switching transistor that is connected to the driving transistor and selectively transmits a data voltage, and a first capacitor that turns off the driving transistor according to a voltage signal. A capacitor that adjusts a voltage of a control terminal of a driving transistor is provided, thereby performing impulsive driving.
    Type: Application
    Filed: December 5, 2006
    Publication date: June 7, 2007
    Inventors: Si-Duk Sung, Nam-Deog Kim, Kyong-Tae Park, Young-Soo Yoon
  • Publication number: 20070097041
    Abstract: A display device includes: a plurality of pixels comprising normal pixels and sample pixels; a plurality of sensing units which sense luminance of the sample pixels and generate sensing signals based on the sensed luminance; a gray voltage generator which generates a plurality of reference gray voltages having values depending on the sensing signals; and a data driver which generates normal data voltages for the normal pixels and sample data voltages for the sample pixels.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 3, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Kyong-Tae PARK, Chun-Seok KO, Nam-Deog KIM, Si-Duk SUNG
  • Publication number: 20070080907
    Abstract: A display device includes a display panel including a plurality of scanning signal lines, a plurality of data lines and a plurality of pixels; a scan driver for applying a scanning signal to the scanning signal line; and a data driver for generating a data voltage including a normal data voltage and a reverse bias voltage, sequentially applying the normal data voltage to all pixels during a first period, and then applying a reverse bias voltage to all pixels during a second period which is shorter than the first period. Each pixel includes a switching transistor which is connected to one of the scanning signal lines and one of the data lines, a driving transistor electrically connected to the switching transistor, and an organic light emitting diode which is connected to the driving transistor.
    Type: Application
    Filed: October 6, 2006
    Publication date: April 12, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Kyong-Tae PARK, Si-Duk SUNG, Nam-Deog KIM
  • Publication number: 20070080910
    Abstract: A display device that is capable of reducing the blurring of a moving image without decreasing the luminance level is presented. The display device includes a display panel having a plurality of pixels, a scanning driver for supplying scanning signals to the display panel, and a data driver for generating a first data voltage representing higher luminance than a reference luminance and a second data voltage representing lower luminance than the reference luminance and alternately applying the first data voltage and the second data voltage to the display panel. The display device displays an image having different luminance levels between the first sub-frame and the second sub-frame to reduce the blurring.
    Type: Application
    Filed: October 12, 2006
    Publication date: April 12, 2007
    Inventors: Kyong-Tae Park, Si-Duk Sung, Nam-Deog Kim, Chun-Seok Ko
  • Publication number: 20070075938
    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: Application
    Filed: September 26, 2006
    Publication date: April 5, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Si-Duk SUNG, Kyong-Tae PARK, Nam-Deog KIM, Chun-Seok KO
  • Publication number: 20070030219
    Abstract: A display device and a method of driving the display device include first and second pixel row groups having at least one pixel row including a plurality of pixels, a plurality of scan lines, a plurality of data lines, and a data driver generating the data voltage including a normal data voltage and a reverse bias voltage. The data driver applies one of the normal data voltage and the reverse bias voltage to the data line according to a selection signal. The normal data voltage is applied to the driving transistors of the first pixel row group, and the reverse bias voltage is applied to the driving transistors of the second pixel row group. Accordingly, the reverse bias voltages are applied to the pixels, preventing transition of threshold voltages of the driving transistors.
    Type: Application
    Filed: April 28, 2006
    Publication date: February 8, 2007
    Inventors: Kyong-Tae Park, Si-Duk Sung, Nam-Deog Kim
  • Publication number: 20060289535
    Abstract: A method of driving an organic light-emitting element is provided as follows. The organic light-emitting element includes a first switching element electrically connected to a gate line and a data line, a second switching element electrically connected to a bias controlling line and a bias signal line, and a driving element electrically connected to the first and second switching elements to drive the organic light-emitting element. The organic light-emitting element is activated during a first time period of a frame. The organic light-emitting element is deactivated during a second time period of the frame. Therefore, the time for reducing the degradation of the driving elements is increased to maximize the amount of degradation reduction.
    Type: Application
    Filed: May 12, 2006
    Publication date: December 28, 2006
    Inventors: Si-Duk Sung, Chun-Seok Ko