Patents by Inventor In-Su Joo

In-Su Joo 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: 7288477
    Abstract: An electro-luminescence device including an electro-luminescence element and a thin film transistor electrically connected to the electro-luminescence element. The thin film transistor includes a gate electrode formed over a substrate, an insulating layer formed over the gate electrode, and a first semiconductor pattern formed over the insulating layer. An etch stop layer is formed over the first semiconductor layer. A second semiconductor pattern is formed over the etch stop layer at one side of the etch stop layer, and a third semiconductor pattern is formed over the etch stop layer at another side of the etch stop layer. A source electrode is formed over the second semiconductor pattern, and a drain electrode is formed over the third semiconductor pattern.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: October 30, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-Hoo Choi, In-Su Joo, Beom-Rak Choi, Jong-Moo Huh
  • Publication number: 20070171157
    Abstract: An electronic display apparatus includes a substrate, pixels and light sensing parts. The substrate includes a display region and a peripheral region adjacent the display region, and the substrate includes a plurality of gate lines extended in a first direction and a plurality of data lines extended in a second direction that is substantially perpendicular to the first direction. The pixels defined by each of the data and gate lines are formed in the display region to display an image. The light sensing part is formed in the peripheral region, and the light sensing part senses an intensity of an ambient light. The light sensing part that senses an intensity of an ambient light is formed on the array substrate, so that a luminance of the display apparatus may be adjusted in accordance with the intensity of the ambient light.
    Type: Application
    Filed: March 29, 2007
    Publication date: July 26, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Joon-Hoo CHOI, In-Su JOO, Kyu-Ha CHUNG
  • Publication number: 20070152222
    Abstract: Provided is an organic electro-luminescence display device. Because TFTs and organic light-emitting diode devices are formed on two different substrates, respectively, and the two substrates are attached to each other, so that productivity improves and manufacturing costs can be reduced. Also, because a pad portion exposed to the outside is formed using a conductive layer having corrosion resistance, corrosion of the pad portion is prevented, and thus an organic electro-luminescence display device having improved reliability can be provided.
    Type: Application
    Filed: December 15, 2006
    Publication date: July 5, 2007
    Inventor: In Su Joo
  • Patent number: 7218048
    Abstract: An electronic display apparatus includes a substrate, pixels and light sensing parts. The substrate includes a display region and a peripheral region adjacent the display region, and the substrate includes a plurality of gate lines extended in a first direction and a plurality of data lines extended in a second direction that is substantially perpendicular to the first direction. The pixels defined by each of the data and gate lines are formed in the display region to display an image. The light sensing part is formed in the peripheral region, and the light sensing part senses an intensity of an ambient light. The light sensing part that senses an intensity of an ambient light is formed on the array substrate, so that a luminance of the display apparatus may be adjusted in accordance with the intensity of the ambient light.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: May 15, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-Hoo Choi, In-Su Joo, Kyu-Ha Chung
  • Publication number: 20060244696
    Abstract: An organic light emitting diode display includes a plurality of pixels. Each pixel includes a light emitting element and a driving transistor coupled to the light emitting element. The pixels may be arranged in a matrix. The pixels include first pixels, second pixels, and third pixels, the driving transistors of the first to the third pixels occupy different areas, and the light emitting elements of the first to the third pixels occupy substantially equal area.
    Type: Application
    Filed: April 28, 2006
    Publication date: November 2, 2006
    Inventors: Kwang-Chul Jung, In-Su Joo
  • Publication number: 20060227081
    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: October 27, 2005
    Publication date: October 12, 2006
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: In-Su Joo, Chun-Seok Ko, Kwang-Chul Jung
  • Publication number: 20060169981
    Abstract: The light emitting efficiency of an organic electro luminance substance depends on the selected electro luminescent (EL) material. Each color of organic EL substances has a different light emitting efficiency from another color. The current source of a pixel having an EL layer with good light emitting efficiency is shared with another pixel having an EL layer that is less efficient. Therefore the current source is used efficiently, and the aperture ratio of an organic light emitting display and the quality of the display is improved.
    Type: Application
    Filed: January 31, 2006
    Publication date: August 3, 2006
    Inventor: In-Su Joo
  • Publication number: 20060124932
    Abstract: A thin film transistor array panel for an X-ray detector includes a dummy pixel including a photo diode and a TFT for detecting leakage current. The photo diode includes first and second electrodes (178,195) facing each other and a photo-conductive layer (800) disposed between the first electrode and the second electrode. The TFT includes a semiconductor layer (150), a gate electrode (123), a source electrode (173) connected to a data line, a drain electrode (175) connected to the photo diode. The dummy pixel further includes a light blocking layer (196) for blocking light incident on the photo diode. Alternatively, the semiconductor layer is disconnected between the source electrode and the drain electrode.
    Type: Application
    Filed: December 11, 2003
    Publication date: June 15, 2006
    Inventors: In-Su Joo, Joon-Hoo Choi
  • Publication number: 20060017665
    Abstract: An OLED includes a display panel, a printed circuit board, a signal transmission member and a voltage transmission member. The display panel has a display region and peripheral regions. The display panel displays an image by an organic light emitting element within the display region. The printed circuit board applies a driving signal and a voltage to the display panel. The signal transmission member electrically connects the printed circuit board to the display panel to transmit the driving signal and the voltage to the display panel. The voltage transmission member transmits the voltage to the display panel. Therefore, an amount of the current applied to the display panel is increased.
    Type: Application
    Filed: July 15, 2005
    Publication date: January 26, 2006
    Inventors: Chun-Seok Ko, Nam-Deog Kim, Byung-Sik Koh, In-Su Joo
  • Publication number: 20060007077
    Abstract: An organic light emitting device includes first and second sub pixels. The first sub pixel includes at least one first sub pixel that emits a light of original colors, and the second sub pixel includes at least one second sub pixel that emits a light of complementary colors, wherein a specific sub pixel is selected from the first and second sub pixels and a light emitting efficiency of a remaining sub pixels are adjusted according to a light emitting efficiency of a selected sub pixel from among the first and second sub pixels, so that the OLED displays a white color when each sub pixel emits a maximum amount of light.
    Type: Application
    Filed: July 8, 2005
    Publication date: January 12, 2006
    Inventors: In-Su Joo, Young-Chol Yang, Keun-Kyu Song
  • Publication number: 20050269958
    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: Application
    Filed: April 7, 2005
    Publication date: December 8, 2005
    Inventors: Joon-Hoo Choi, Jong-Moo Huh, In-Su Joo, Chun-Seok Ko, Beohm-Rock Choi
  • Patent number: 6960788
    Abstract: In an image recognition apparatus and an LCD apparatus having the same, a plurality of gate lines arranged in a transparent substrate has a predetermined slope such that the gate lines intersect with two sides of the transparent substrate, which are adjacent to or facing each other. A plurality of sensing signal output line arranged in the transparent substrate is substantially perpendicular to the gate lines. An image recognition sensor is formed on a pixel area defined by the gate and sensing signal output lines adjacent to each other. The image recognition sensor senses an image pattern of an object in response to gate driving signals from the gate lines and outputs the sensed image pattern through the sensing signal output lines. Accordingly, the LCD apparatus may prevent appearance of the moiré image and deterioration of the display quality of the LCD panel.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: November 1, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: In-Su Joo, Joon-Hoo Choi, Jean-Ho Song
  • Publication number: 20050179625
    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: Application
    Filed: January 3, 2005
    Publication date: August 18, 2005
    Inventors: Joon-Hoo Choi, Jong-Moo Huh, In-Su Joo, Chun-Seok Ko
  • Publication number: 20050174311
    Abstract: A method of driving a transistor, a driving element using the same, and a display panel and a display apparatus having the driving element are provided. The method for driving a transistor comprises: receiving a bias voltage at a first electrode of a driving transistor; outputting a first signal having a first polarity from a first electrode of a switching transistor to a capacitor and a control electrode of the driving transistor when a select line is activated for driving an organic display element; and outputting a second signal having a second polarity from the first electrode of the switching transistor to the capacitor and the control electrode of the driving transistor when the select line is activated for dissipating a charge in the driving transistor and for deactivating the organic display element.
    Type: Application
    Filed: July 13, 2004
    Publication date: August 11, 2005
    Inventors: Jong-Moo Huh, Joon-Hoo Choi, In-Su Joo, Beohm-Rock Choi
  • Publication number: 20050127367
    Abstract: A thin film transistor is provided, which includes: a semiconductor layer including an intrinsic portion; a gate electrode overlapping the intrinsic portion; a gate insulating layer disposed between the semiconductor layer and the gate electrode; and source and drain electrodes that have edges opposing each other with respect to the intrinsic portion of the semiconductor layer and are connected to the semiconductor layer, wherein the intrinsic portion has a curved surface contacting the gate insulating layer.
    Type: Application
    Filed: November 22, 2004
    Publication date: June 16, 2005
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong-Moo Huh, Joon-Hak Oh, Joon-Hoo Choi, In-Su Joo, Beohm-Rock Choi
  • Publication number: 20050116937
    Abstract: A light-sensitive (i.e., touch-sensitive) display device that requires less circuitry than the currently available light-sensitive display devices is presented. Unlike the currently available devices, which require at least two switching elements and a capacitor to implement a photosensitive switch, the invention only requires one switching element. The device of the invention includes a substrate with a plurality of scan lines, a plurality of read-out lines, a power line, and an array of photosensitive switches formed thereon. The scan lines and the read-out lines extend in directions that are substantially perpendicular to each other, forming pixels. One photosensitive switch is formed in each pixel, and each photosensitive switch has one light-sensitive transistor. The transistor connects the power line to one of the read-out lines in response to sensing incident light.
    Type: Application
    Filed: June 2, 2004
    Publication date: June 2, 2005
    Inventors: Joon-Hoo Choi, In-Su Joo, Hyung-Guel Kim
  • Publication number: 20050082968
    Abstract: An electronic display apparatus includes a substrate, pixels and light sensing parts. The substrate includes a display region and a peripheral region adjacent the display region, and the substrate includes a plurality of gate lines extended in a first direction and a plurality of data lines extended in a second direction that is substantially perpendicular to the first direction. The pixels defined by each of the data and gate lines are formed in the display region to display an image. The light sensing part is formed in the peripheral region, and the light sensing part senses an intensity of an ambient light. The light sensing part that senses an intensity of an ambient light is formed on the array substrate, so that a luminance of the display apparatus may be adjusted in accordance with the intensity of the ambient light.
    Type: Application
    Filed: February 5, 2004
    Publication date: April 21, 2005
    Inventors: Joon-Hoo Choi, In-Su Joo, Kyu-Ha Chung
  • Publication number: 20050014379
    Abstract: An electro-luminescence device including an electro-luminescence element and a thin film transistor electrically connected to the electro-luminescence element. The thin film transistor includes a gate electrode formed over a substrate, an insulating layer formed over the gate electrode, and a first semiconductor pattern formed over the insulating layer. An etch stop layer is formed over the first semiconductor layer. A second semiconductor pattern is formed over the etch stop layer at one side of the etch stop layer, and a third semiconductor pattern is formed over the etch stop layer at another side of the etch stop layer. A source electrode is formed over the second semiconductor pattern, and a drain electrode is formed over the third semiconductor pattern.
    Type: Application
    Filed: January 21, 2004
    Publication date: January 20, 2005
    Inventors: Joon-Hoo Choi, In-Su Joo, Beom-Rak Choi, Jong-Moo Huh
  • Publication number: 20040251846
    Abstract: A driving circuit for an organic light emitting display apparatus includes first and second switching elements and a driving element. The first switching element is controlled by a scan signal supplied from a scan line. The second switching element is controlled by the scan signal. The driving element provides an end of an organic electroluminescent element with a first reference voltage via the second switching element. The driving element has amorphous silicon thin film transistors so that the manufacturing cost of the organic light emitting display apparatus may be reduced.
    Type: Application
    Filed: June 10, 2004
    Publication date: December 16, 2004
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joon-Hoo Choi, In-Su Joo, Beohm-Rock Choi, Jong-Moo Huh
  • Patent number: 6812054
    Abstract: A thin film transistor optical detecting sensor includes an array substrate having a transparent substrate, a plurality of sensor thin film transistors disposed on the transparent substrate, each having a first silicon layer of a first thickness, a plurality of storage capacitors, each connected with a corresponding one of the plurality of sensor thin film transistors, storing charges of an optical current, and a plurality of switch thin film transistors, each having a second silicon layer of a second thickness less than the first thickness.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: November 2, 2004
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: In-Su Joo