Patents by Inventor Yong-Woo Park

Yong-Woo Park 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: 9024305
    Abstract: An organic light emitting diode display includes a substrate, a planarization layer disposed on the substrate, a first electrode disposed on the planarization layer, an emission layer disposed on the first electrode, and a second electrode disposed on the emission layer, wherein an uneven pattern is formed on a top surface of the planarization layer, the uneven pattern comprises a strip line having a plurality of thicknesses and widths, and a thickness of the strip line becomes smaller as a distance from a center portion of the first electrode becomes larger.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: May 5, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Beom Choi, Hwa-Jin Noh, Hyoung-Min Park, Yong-Woo Park
  • Patent number: 8900898
    Abstract: An organic light-emitting display includes a substrate including a pixel region and a transistor region; a first transparent electrode and a second transparent electrode formed over the pixel region and the transistor region of the substrate, respectively; a gate electrode formed over the second transparent electrode; a gate insulating film formed over the gate electrode; a semiconductor layer formed over the gate insulating film; a source and drain electrode having an end connected to the semiconductor layer and the other end connected to the first transparent electrode; a pixel defining layer disposed over the source and drain electrode to cover the source and drain electrode and having an opening disposed over the first transparent electrode; a light-blocking layer formed over the pixel defining layer; and an organic light-emitting layer formed over the first transparent electrode.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: December 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Yong-Woo Park
  • Publication number: 20140346449
    Abstract: An organic light emitting diode display includes a substrate, a planarization layer disposed on the substrate, a first electrode disposed on the planarization layer, an emission layer disposed on the first electrode, and a second electrode disposed on the emission layer, wherein an uneven pattern is formed on a top surface of the planarization layer, the uneven pattern comprises a strip line having a plurality of thicknesses and widths, and a thickness of the strip line becomes smaller as a distance from a center portion of the first electrode becomes larger.
    Type: Application
    Filed: September 11, 2013
    Publication date: November 27, 2014
    Inventors: Jae-Beom CHOI, Hwa-Jin NOH, Hyoung-Min PARK, Yong-Woo PARK
  • Patent number: 8835205
    Abstract: An organic light-emitting display device including a pixel-defining layer and a spacer, and a method of manufacturing the same. The method includes: forming an organic insulating material layer on a pixel electrode; placing a half-tone mask including a light-blocking portion, a partial-transmitting portion, and a light-transmitting portion on the organic insulating material layer and performing an exposure process so that the pixel electrode corresponds to the light-transmitting portion, a pixel-defining layer at least partially surrounding the pixel electrode corresponds to the partial-transmitting portion, and a spacer adjacent to the pixel-defining layer corresponds to the light-blocking portion; and etching a portion of the organic insulating material layer that is exposed so that a pixel area on the pixel electrode is at least partially surrounded by the pixel-defining layer and the spacer. A taper angle of the pixel-defining layer is between about 15 degrees to about 30 degrees.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: September 16, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Yong-Woo Park
  • Patent number: 8723166
    Abstract: An organic light-emitting display apparatus includes a light-shielding layer formed on a pixel defining layer to prevent external light or internal light from entering an active layer of a thin-film transistor (TFT), thus improving the stability of the active layer, and a method of manufacturing the organic light-emitting display apparatus.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: May 13, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Yong-Woo Park
  • Publication number: 20140048829
    Abstract: A light blocking member including a metal particle and a ceramic material and a display device including the same.
    Type: Application
    Filed: January 22, 2013
    Publication date: February 20, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun-Eok SHIN, Dae-Woo LEE, Won-Pil LEE, Ho-Jin YOON, Yong-Woo PARK, Kyung-Min CHOI
  • Publication number: 20130309793
    Abstract: An organic light-emitting display includes a substrate including a pixel region and a transistor region; a first transparent electrode and a second transparent electrode formed over the pixel region and the transistor region of the substrate, respectively; a gate electrode formed over the second transparent electrode; a gate insulating film formed over the gate electrode; a semiconductor layer formed over the gate insulating film; a source and drain electrode having an end connected to the semiconductor layer and the other end connected to the first transparent electrode; a pixel defining layer disposed over the source and drain electrode to cover the source and drain electrode and having an opening disposed over the first transparent electrode; a light-blocking layer formed over the pixel defining layer; and an organic light-emitting layer formed over the first transparent electrode.
    Type: Application
    Filed: July 22, 2013
    Publication date: November 21, 2013
    Inventor: Yong-Woo Park
  • Publication number: 20130228786
    Abstract: An organic light-emitting display device including a thin film transistor (TFT) on a substrate; an organic light emitting diode (OLED) electrically connected to the TFT, the OLED including a pixel electrode, an organic layer, and an opposite electrode; a pixel defining layer (PDL) on the pixel electrode, the PDL including an opening that exposes at least one portion of the pixel electrode; and a light scattering layer between the pixel electrode and the organic layer.
    Type: Application
    Filed: September 4, 2012
    Publication date: September 5, 2013
    Inventor: Yong-Woo PARK
  • Patent number: 8519407
    Abstract: An organic light-emitting display includes a substrate including a pixel region and a transistor region; a first transparent electrode and a second transparent electrode formed over the pixel region and the transistor region of the substrate, respectively; a gate electrode formed over the second transparent electrode; a gate insulating film formed over the gate electrode; a semiconductor layer formed over the gate insulating film; a source and drain electrode having an end connected to the semiconductor layer and the other end connected to the first transparent electrode; a pixel defining layer disposed over the source and drain electrode to cover the source and drain electrode and having an opening disposed over the first transparent electrode; a light-blocking layer formed over the pixel defining layer; and an organic light-emitting layer formed over the first transparent electrode.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: August 27, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Yong-Woo Park
  • Publication number: 20130119387
    Abstract: An organic light-emitting display apparatus includes: a substrate including an emission region and a non-emission region and having a recess formed in at least a portion of the non-emission region; a black matrix disposed in the recess; a thin film transistor disposed on the non-emission region of the substrate and including an active layer, a gate electrode, and source and drain electrodes; a pixel electrode disposed on the emission region of the substrate and electrically connected to one of the source and drain electrodes; an organic emission layer disposed on the pixel electrode; and an opposite electrode disposed on the organic emission layer.
    Type: Application
    Filed: May 10, 2012
    Publication date: May 16, 2013
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: Yong-Woo Park, Chun-Gi You, Joon-Hoo Choi, Won-Pil Lee
  • Patent number: 8367278
    Abstract: Embodiments relate to halftone masks that can uniformly form the height of an underlying layer in two regions that are spaced apart from each other, a manufacturing method thereof, and a method for forming a film using the same. The halftone mask includes a first light blocking unit and a second light blocking unit, and a semi-transmitting unit that is disposed adjacent to the side of the second light blocking unit. The first and second light blocking units block light and are spaced apart from each other at a predetermined interval. The semi-transmitting unit is positioned at a side far from the first light blocking unit and reduces intensity of light. Sum of the second length of the second light blocking unit and the third length of the semi-transmitting unit is larger than the first length of the first blocking unit.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: February 5, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Oh-Seob Kwon, Jae-Yong Kim, Sung-Chul Kim, Kyoung-Bo Kim, Il-Jeong Lee, Cheol-Ho Yu, Yong-Woo Park, Han-Hee Yoon, In-Young Jung
  • Publication number: 20120211754
    Abstract: An organic light-emitting display includes a substrate including a pixel region and a transistor region; a first transparent electrode and a second transparent electrode formed over the pixel region and the transistor region of the substrate, respectively; a gate electrode formed over the second transparent electrode; a gate insulating film formed over the gate electrode; a semiconductor layer formed over the gate insulating film; a source and drain electrode having an end connected to the semiconductor layer and the other end connected to the first transparent electrode; a pixel defining layer disposed over the source and drain electrode to cover the source and drain electrode and having an opening disposed over the first transparent electrode; a light-blocking layer formed over the pixel defining layer; and an organic light-emitting layer formed over the first transparent electrode.
    Type: Application
    Filed: January 12, 2012
    Publication date: August 23, 2012
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventor: Yong-Woo PARK
  • Patent number: 8227795
    Abstract: An organic thin film transistor (TFT) that allows an organic semiconductor layer to be easily patterned includes a gate electrode, source and drain electrodes insulated from the gate electrode, a self-assembly monolayer formed on the source and drain electrodes, an organic semiconductor layer which is insulated from the gate electrode and covers at least a portion of the self-assembly monolayer. A flat panel display apparatus includes the organic TFT. A method of manufacturing an organic TFT includes forming source and drain electrodes on a substrate; forming a self-assembly monolayer covering at least the source and drain electrodes; patterning the self-assembly monolayer to remove portions of the self-assembly monolayer that are not located on the source and drain electrodes; and forming an organic semiconductor layer by inkjet printing an organic semiconductor material between the source and drain electrodes.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: July 24, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Sang-Min Lee, Min-chul Suh, Yong-Woo Park
  • Patent number: 8183562
    Abstract: An organic light emitting display apparatus includes an organic light emitting diode, a photo sensor, and a light blocking portion. The light blocking portion is at at least a side of the photo sensor so that light emitted from the organic light emitting diode is not directly incident on the photo sensor.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: May 22, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Ki-Ju Im, Yong-Sung Park, Yong-Woo Park, Moo-Jin Kim, Han-Hee Yoon, Kwang-Hae Kim, Sung-Won Doh, Kyoung-Bo Kim, Gun-Shik Kim, Jun-Sik Oh
  • Publication number: 20120056184
    Abstract: An organic light-emitting display apparatus includes a light-shielding layer formed on a pixel defining layer to prevent external light or internal light from entering an active layer of a thin-film transistor (TFT), thus improving the stability of the active layer, and a method of manufacturing the organic light-emitting display apparatus.
    Type: Application
    Filed: September 2, 2011
    Publication date: March 8, 2012
    Inventor: Yong-Woo Park
  • Publication number: 20110198596
    Abstract: An organic light-emitting display device including a pixel-defining layer and a spacer, and a method of manufacturing the same. The method includes: forming an organic insulating material layer on a pixel electrode; placing a half-tone mask including a light-blocking portion, a partial-transmitting portion, and a light-transmitting portion on the organic insulating material layer and performing an exposure process so that the pixel electrode corresponds to the light-transmitting portion, a pixel-defining layer at least partially surrounding the pixel electrode corresponds to the partial-transmitting portion, and a spacer adjacent to the pixel-defining layer corresponds to the light-blocking portion; and etching a portion of the organic insulating material layer that is exposed so that a pixel area on the pixel electrode is at least partially surrounded by the pixel-defining layer and the spacer. A taper angle of the pixel-defining layer is between about 15 degrees to about 30 degrees.
    Type: Application
    Filed: February 7, 2011
    Publication date: August 18, 2011
    Inventor: Yong-Woo PARK
  • Publication number: 20110108847
    Abstract: A thin film transistor (TFT), a method of fabricating the same, an organic light emitting diode (OLED) display device having the same, and a method of fabricating the same. The TFT includes a substrate; a buffer layer disposed on the substrate; a semiconductor layer disposed on the buffer layer; a gate insulating layer disposed on the semiconductor layer; a gate electrode disposed on the gate insulating layer and corresponding to the semiconductor layer; and source and drain electrodes insulated from the gate electrode, and electrically connected to the semiconductor layer. Here, the semiconductor layer includes a plurality of seed regions separated from each other by a distance of 50 ?m or more.
    Type: Application
    Filed: August 16, 2010
    Publication date: May 12, 2011
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventor: Yong-Woo PARK
  • Patent number: 7875475
    Abstract: A flat panel display apparatus includes a gate insulating layer having openings which define pixels. The flat panel display apparatus includes: a substrate; a source electrode and a drain electrode formed on the substrate; a semiconductor layer contacting the source electrode and the drain electrode; a gate formed on the substrate; an insulating layer formed between the source and drain electrodes and the gate, and including an opening; and a pixel electrode partially exposed by the opening of the insulating layer. The insulating layer acts as a gate insulating layer and a pixel definition layer defining the pixel electrode.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: January 25, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Min-Chul Suh, Taek Ahn, Yong-Woo Park
  • Publication number: 20100330468
    Abstract: Embodiments relate to halftone masks that can uniformly form the height of an underlying layer in two regions that are spaced apart from each other, a manufacturing method thereof, and a method for forming a film using the same. The halftone mask includes a first light blocking unit and a second light blocking unit, and a semi-transmitting unit that is disposed adjacent to the side of the second light blocking unit. The first and second light blocking units block light and are spaced apart from each other at a predetermined interval. The semi-transmitting unit is positioned at a side far from the first light blocking unit and reduces intensity of light. Sum of the second length of the second light blocking unit and the third length of the semi-transmitting unit is larger than the first length of the first blocking unit.
    Type: Application
    Filed: June 25, 2010
    Publication date: December 30, 2010
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: Oh-Seob Kwon, Jae-Yong Kim, Sung-Chul Kim, Kyoung-Bo Kim, Il-Jeong Lee, Cheol-Ho Yu, Yong-Woo Park, Han-Hee Yoon, In-Young Jung
  • Publication number: 20100148163
    Abstract: An organic light emitting display apparatus includes an organic light emitting diode, a photo sensor, and a light blocking portion. The light blocking portion is at at least a side of the photo sensor so that light emitted from the organic light emitting diode is not directly incident on the photo sensor.
    Type: Application
    Filed: December 11, 2009
    Publication date: June 17, 2010
    Inventors: Ki-Ju Im, Yong-Sung Park, Yong-Woo Park, Moo-Jin Kim, Han-Hee Yoon, Kwang-Hae Kim, Sung-Won Doh, Kyoung-Bo Kim, Gun-Shik Kim, Jun-Sik Oh