Patents by Inventor Jae-Hwan Oh

Jae-Hwan Oh 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: 20150270327
    Abstract: An organic light emitting diode display includes a substrate; a gate wire on the substrate; an interlayer insulating layer covering the gate wire; a data wire on the interlayer insulating layer; a passivation layer on the data wire and the interlayer insulating layer and having a protection opening; a pixel electrode on a first wiring portion of the data wire exposed through the protection opening and the interlayer insulating layer; a pixel definition layer on the passivation layer and having a pixel opening exposing the pixel electrode; an organic emission layer covering the pixel electrode; and a common electrode covering the organic emission layer and the pixel definition layer, wherein the pixel electrode contacting the first wiring portion of the data wire and the interlayer insulating layer has protrusions and depressions.
    Type: Application
    Filed: September 24, 2014
    Publication date: September 24, 2015
    Inventors: Jae Hwan Oh, Hwa Jin Noh, Se Hun Park, Won Kyu Lee, Young-Jin Chang
  • Patent number: 9131114
    Abstract: A method for encrypting content includes using a plurality of different encryption schemes to produce encrypted content. Encryption information is provided so as to indicate which of the plurality of different encryption schemes is used on portions of the content that was encrypted. Encryption information and the encrypted content are both sent as a content stream to another device. The decryption involves using the encryption information to help control the decryption so that the correct one of a plurality of different decryption schemes is applied to the proper portions of the encrypted content.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: September 8, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-Bo Oh, Ji-Sung Oh, Jae-Hwan Oh
  • Patent number: 9105593
    Abstract: A display device includes a first insulation layer on a substrate, gate wires on the first insulation layer, the gate wires extending in a first direction, a second insulation layer on the gate wires, data wires on the second insulation layer, the data wires extending in a second direction crossing the first direction, pixels at intersection regions of gate wires and data wires, respectively, the pixels being connected to respective gate wires and data wires, and data leading diodes having an island form and connected to the data wires, the data leading diodes being configured to induce breakage of the first insulation layer when external static electricity passes through the data wires.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: August 11, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Guang hai Jin, Jae-Beom Choi, Kwan-Wook Jung, Moo-Jin Kim, Jae-Hwan Oh, June-Woo Lee
  • Publication number: 20150214252
    Abstract: A thin film transistor (TFT) array substrate is provided that includes a TFT on a substrate. The TFT can include an active layer, gate electrode, source electrode, drain electrode, first insulating layer between the active layer and the gate electrode, and second insulating layer between the gate electrode and the source and drain electrodes. A pixel electrode is disposed on the first and second insulating layers. A capacitor including a lower electrode is disposed on a same layer as the gate electrode and an upper electrode. A third insulating layer directly between the second insulating layer and the pixel electrode and between the lower electrode and the upper electrode. A fourth insulating layer covers the source electrode, the drain electrode, and the upper electrode, and exposes the pixel electrode and can further expose a pad electrode.
    Type: Application
    Filed: April 2, 2015
    Publication date: July 30, 2015
    Inventors: June-Woo LEE, Jae-Beom CHOI, Kwan-Wook JUNG, Jae-Hwan OH, Seong-Hyun JIN, Kwang-Hae KIM, Jong-Hyun CHOI
  • Publication number: 20150171152
    Abstract: An organic light-emitting display device including a TFT comprising an active layer, a gate electrode comprising a lower gate electrode and an upper gate electrode, and source and drain electrodes insulated from the gate electrode and contacting the active layer; an organic light-emitting device electrically connected to the TFT and comprising a pixel electrode formed in the same layer as where the lower gate electrode is formed; and a pad electrode electrically coupled to the TFT or the organic light emitting device and comprising a first pad electrode formed in the same layer as in which the lower gate electrode is formed, a second pad electrode formed in the same layer as in which the upper gate electrode is formed, and a third pad electrode comprising a transparent conductive oxide, the first, second, and third pad electrodes being sequentially stacked.
    Type: Application
    Filed: February 26, 2015
    Publication date: June 18, 2015
    Inventors: Jong-Hyun Choi, Jae-Hwan Oh
  • Publication number: 20150155219
    Abstract: A backplane for a display device and the display device are disclosed. In one aspect, the backplane includes a substrate, an active layer formed over the substrate including a channel region, a source region contacting a first side of the channel region, and a drain region contacting a second side of the channel region. The backplane further includes a gate electrode formed adjacent to the channel region, a source electrode electrically connected to the source region, and a drain electrode electrically connected to the drain region. The active layer includes a plurality of heat radiation pins that extend in a direction of the thickness of the active layer.
    Type: Application
    Filed: March 18, 2014
    Publication date: June 4, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Young-Jun Shin, Se-Hun Park, Jae-Hwan Oh, Young-Jin Chang
  • Patent number: 9035215
    Abstract: A laser irradiation apparatus for irradiating a laser beam to a semiconductor layer including a plurality of pixel areas, the apparatus includes a laser generator generating the laser beam, and an optical switching unit time-dividing the laser beam generated from the laser generator and transmitting a plurality of time-divided laser beams to a plurality of optical systems. The apparatus includes a first optical system of the plurality of optical systems that receives a first time-divided laser beam and irradiates a first laser slit beam along a first irradiation direction, and a second optical system of the plurality of optical systems that receives a second time-divided laser beam and irradiates a second laser slit beam along a second irradiation direction that is parallel with the first irradiation direction. The first laser slit beam and the second laser slit beam crystallize partial areas at a same location in the respective pixel areas.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: May 19, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Won-Kyu Lee, Jae-Beom Choi, Jae-Hwan Oh, Young-Jin Chang, Seong-Hyun Jin
  • Patent number: 9013094
    Abstract: An organic light emitting display apparatus including sub pixels, each of the sub pixels including: first and second electrodes, the second electrode extending over the first electrode; and an intermediate layer disposed between the first and second electrodes, the intermediate layer including an emission layer, wherein a first portion of the first electrode, the second electrode, and the intermediate layer extends within a weak resonance region, the weak resonance region being configured to induce a first resonance of light generated by the emission layer between the first and second electrodes, and a second portion of the first electrode, the second electrode, and the intermediate layer extends within a strong resonance region, the strong resonance region being configured to induce a second resonance of light generated by the emission layer between the first and second electrodes, the second resonance being stronger than the first resonance.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: April 21, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yeoung-Jin Chang, Jae-Hwan Oh, Seong-Hyun Jin, Won-Kyu Lee
  • Patent number: 9012915
    Abstract: An organic light-emitting display apparatus includes a buffer layer that is on a substrate and includes nanoparticles including nickel (Ni), a pixel electrode on the buffer layer, an organic emission layer on the pixel electrode, and an opposite electrode on the organic emission layer. A method of manufacturing the organic light-emitting display apparatus is provided.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: April 21, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Hwan Oh, Yeoung-Jin Chang, Seong-Hyun Jin, Won-Kyu Lee, Jae-Beom Choi
  • Patent number: 9000444
    Abstract: A thin film transistor (TFT) array substrate is provided that includes a TFT on a substrate. The TFT can include an active layer, gate electrode, source electrode, drain electrode, first insulating layer between the active layer and the gate electrode, and second insulating layer between the gate electrode and the source and drain electrodes. A pixel electrode is disposed on the first and second insulating layers. A capacitor including a lower electrode is disposed on a same layer as the gate electrode and an upper electrode. A third insulating layer directly between the second insulating layer and the pixel electrode and between the lower electrode and the upper electrode. A fourth insulating layer covers the source electrode, the drain electrode, and the upper electrode, and exposes the pixel electrode and can further expose a pad electrode.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: April 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: June-Woo Lee, Jae-Beom Choi, Kwan-Wook Jung, Jae-Hwan Oh, Seong-Hyun Jin, Kwang-Hae Kim, Jong-Hyun Choi
  • Patent number: 9000523
    Abstract: An organic light-emitting display device including a TFT comprising an active layer, a gate electrode comprising a lower gate electrode and an upper gate electrode, and source and drain electrodes insulated from the gate electrode and contacting the active layer; an organic light-emitting device electrically connected to the TFT and comprising a pixel electrode formed in the same layer as where the lower gate electrode is formed; and a pad electrode electrically coupled to the TFT or the organic light emitting device and comprising a first pad electrode formed in the same layer as in which the lower gate electrode is formed, a second pad electrode formed in the same layer as in which the upper gate electrode is formed, and a third pad electrode comprising a transparent conductive oxide, the first, second, and third pad electrodes being sequentially stacked.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: April 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Hyun Choi, Jae-Hwan Oh
  • Publication number: 20150042634
    Abstract: An organic light emitting diode (OLED) display including: a substrate; a scan line formed on the substrate and configured to transmit a scan signal; a data line and a driving voltage line crossing the scan line and respectively configured to transmit a data signal and a driving voltage; a switch connected to the scan line and the data line; a static electricity shield enclosing the switch; and an organic light emitting diode (OLED) connected to the switch.
    Type: Application
    Filed: April 16, 2014
    Publication date: February 12, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Guang-Hai JIN, Jae-Beom Choi, Jae Hwan Oh, Seong-Hyun Jin
  • Patent number: 8901936
    Abstract: A method for testing an array for a pixel circuit of an organic light emitting diode display, which includes a first transistor that transmits a driving current corresponding to a data signal to an organic light emitting diode according to a scan signal and at least one capacitor, uses an array test device having a control device and a driver. The method includes performing a first irradiation of electron beams to an exposed portion of a first electrode of the at least one capacitor before manufacturing of the organic light emitting diode is completed, calibrating the control device of the array test device based on secondary electrons output by the at least one capacitor, performing a second irradiation of electron beams to an anode of the pixel circuit, and detecting whether the first transistor is normally operated based on an output amount of secondary electrons output by the anode.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: December 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Guang hai Jin, Jae-Beom Choi, Kwan-Wook Jung, June-Woo Lee, Hae-Yeon Lee, Jae-Hwan Oh, Seong-Jun Kim
  • Patent number: 8901550
    Abstract: An organic light-emitting display apparatus includes an active layer of a thin film transistor (TFT), a gate electrode including a transparent conductive material or a metal that on the active layer, a first insulating layer on the substrate, source and drain electrodes electrically connected to the active layer, a second insulating layer between the gate electrode and the source and drain electrodes, a first conductive layer of a transparent conductive material on the first insulating layer, a second conductive layer on the first conductive layer, the second conductive layer being a metal, a third conductive layer on the second conductive layer, the third conductive layer being made of a same material as the source and drain electrodes, and being connected to the first conductive layer; and a protection layer that includes a transparent conductive oxide, the protection layer being on the third conductive layer.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: December 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Hun Park, Won-Kyu Lee, Yeoung-Jin Chang, Jae-Hwan Oh, Seong-Hyun Jin, Jae-Beom Choi
  • Publication number: 20140346457
    Abstract: Provided are an organic light-emitting display apparatus having superior light efficiency and ease of manufacture, as well as a method of manufacturing the same. The organic light-emitting display apparatus includes: a substrate; a pixel electrode disposed on a pixel region of the substrate; a first insulating layer that is interposed between the substrate and the pixel electrode and that has a first discontinuous region extending along at least a portion of an edge of the pixel electrode; an intermediate layer that is disposed on the pixel electrode and that includes an emission layer; and an opposite electrode that covers the intermediate layer and at least a portion of the first discontinuous region, so that a shortest distance to the substrate in at least a portion of the first discontinuous region is shorter than a shortest distance between the pixel electrode and the substrate.
    Type: Application
    Filed: October 10, 2013
    Publication date: November 27, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Jae-Hwan OH, Yeoung-Jin CHANG, Seong-Hyun JIN, Se-Hun PARK, Won-Kyu LEE, Jae-Beom CHOI
  • Publication number: 20140339514
    Abstract: An organic light-emitting display device includes a substrate. A buffer layer is formed on the substrate. A thin film transistor is disposed on the buffer layer. The thin film transistor includes an active layer, a gate electrode, a source electrode, a drain electrode, a first insulating layer, and a second insulating layer. An uneven pattern is formed by patterning the buffer layer. A first pixel electrode is disposed in an opening formed in the second insulating layer. The first pixel electrode includes a transparent conductive oxide. A second pixel electrode is disposed on the first pixel electrode. The second pixel electrode includes a semi-transmissive layer. An organic lighting-emitting layer is formed on the second pixel electrode. An opposite electrode is formed on the organic lighting-emitting layer.
    Type: Application
    Filed: October 17, 2013
    Publication date: November 20, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: JAE-HWAN OH, JAE-BEOM CHOI, SEONG-HYUN JIN, SE-HUN PARK, WON-KYU LEE, YEOUNG-JIN CHANG
  • Patent number: 8865578
    Abstract: An embodiment is directed to a method of manufacturing a polycrystalline silicon layer, the method including providing a crystallization substrate, the crystallization substrate having an amorphous silicon layer on a first substrate, providing a reflection substrate, the reflection substrate having a first region with a reflection panel therein and a second region without the reflection panel, disposing the crystallization substrate and the reflection substrate on one another, and selectively crystallizing the amorphous silicon layer by directing a laser beam onto the crystallization substrate and the reflection substrate, and reflecting the laser beam from the reflection panel.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: October 21, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Jin Chang, Jae-Hwan Oh, Won-Kyu Lee, Seong-Hyun Jin, Jae-Beom Choi
  • Patent number: 8860017
    Abstract: In an organic light-emitting display device and a method of manufacturing the same, the organic light-emitting display device includes: a silicon layer formed on a substrate; and a thin film transistor (TFT) and an organic light-emitting device that are formed on the silicon layer. The silicon layer comprises a conductive doping silicon portion for forming a part of an active layer included in the TFT and an insulating intrinsic silicon portion surrounding the doping silicon portion. According to the organic light-emitting display device of the present invention, manufacturing costs may be reduced due to a reduction in the number of masks, and the manufacturing process of the organic light-emitting display device may be simplified.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: October 14, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Guang-Hai Jin, Dong-Gyu Kim, Jae-Beom Choi, Kwan-Wook Jung, Jae-Hwan Oh, Na-Young Kim
  • Patent number: 8836070
    Abstract: A photo diode includes an intrinsic region on a substrate, a P+ doping region in a first portion of the intrinsic region, and an oxide semiconductor region. The oxide semiconductor region is spaced apart from the P+ doping region on a second portion of the intrinsic region and the second portion of the intrinsic region is different from the first portion of the intrinsic region.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: September 16, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won-Kyu Lee, Jae-Beom Choi, Jae-Hwan Oh, Young-Jin Chang, Seong-Hyun Jin
  • Publication number: 20140225071
    Abstract: An organic light-emitting display apparatus includes an active layer of a thin film transistor (TFT), a gate electrode including a transparent conductive material or a metal that on the active layer, a first insulating layer on the substrate, source and drain electrodes electrically connected to the active layer, a second insulating layer between the gate electrode and the source and drain electrodes, a first conductive layer of a transparent conductive material on the first insulating layer, a second conductive layer on the first conductive layer, the second conductive layer being a metal, a third conductive layer on the second conductive layer, the third conductive layer being made of a same material as the source and drain electrodes, and being connected to the first conductive layer; and a protection layer that includes a transparent conductive oxide, the protection layer being on the third conductive layer.
    Type: Application
    Filed: July 10, 2013
    Publication date: August 14, 2014
    Inventors: Se-Hun PARK, Won-Kyu LEE, Yeoung-Jin CHANG, Jae-Hwan OH, Seong-Hyun JIN, Jae-Beom CHOI