Patents by Inventor Jun-Yeob Lee

Jun-Yeob Lee 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: 20090195153
    Abstract: An organic electroluminescent display device improves driving characteristics at a high temperature and storage characteristics of the organic electroluminescent display device, and prevents pixel contraction phenomena of the device by providing an organic electroluminescent display device comprising a substrate, a first electrode and a second electrode formed on the substrate, and an organic film layer comprising at least one emitting layer between the first electrode and the second electrode. The emitting layer includes at least one phosphorescent dopant, and the dopant is represented by L3M or L2ML?, wherein the M is a transition metal selected from the group consisting of Ir, Pt, Zn and Os, the L and L? are bidendate ligands coordinated with carbon and nitrogen, and at least one of the L and L? has 15 or more carbon atoms in the ligand.
    Type: Application
    Filed: March 17, 2009
    Publication date: August 6, 2009
    Applicant: Samsung Mobile Display
    Inventors: Jun-Yeob Lee, Yong-Joong Choi, Jang-Hyuk Kwon, Ho-Kyoon Chung
  • Publication number: 20090135351
    Abstract: A liquid crystal display device includes an array substrate including gate and data line on a first substrate to define first and second sub-pixel regions and a thin film transistor in each of the first and second sub-pixel regions; a color filter substrate including a color filter layer including first and second color filters corresponding to the first and second sub-pixel regions, respectively, a portion of the first color filter overlapping a portion of the second color filter over the data line; and a liquid crystal layer between the array substrate and the color filter substrate.
    Type: Application
    Filed: November 13, 2008
    Publication date: May 28, 2009
    Inventors: Ki-Hyun Lyu, Dae-Hyun Kim, Jun-Yeob Lee, Sang-Moo Song, Sang-Bum Ko, In-Ho Hwang, Su-Hong Cho
  • Patent number: 7521130
    Abstract: An organic electroluminescent display device improves driving characteristics at a high temperature and storage characteristics of the organic electroluminescent display device, and prevents pixel contraction phenomena of the device by providing an organic electroluminescent display device comprising a substrate, a first electrode and a second electrode formed on the substrate, and an organic film layer comprising at least one emitting layer between the first electrode and the second electrode. The emitting layer includes at least one phosphorescent dopant, and the dopant is represented by L3M or L2ML?, wherein the M is a transition metal selected from the group consisting of Ir, Pt, Zn and Os, the L and L? are bidendate ligands coordinated with carbon and nitrogen, and at least one of the L and L? has 15 or more carbon atoms in the ligand.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: April 21, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Jun-Yeob Lee, Yong-Joong Choi, Jang-Hyuk Kwon, Ho-Kyoon Chung
  • Patent number: 7514863
    Abstract: Organic light emitting devices are provided. One organic light emitting device includes a buffer layer including a fullerene-based material and a hole injection layer and/or a hole transport layer doped with the fullerene-based material.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: April 7, 2009
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Yeob Lee, Min-Seung Chun
  • Publication number: 20080316419
    Abstract: A panel for a liquid crystal display including a substrate, and at least one spacer formed over the substrate. The at least one spacer has a tapered shape with an inclination angle in the range of about 20-about 70 degrees and a height in the range of about 2.5-about 5.0 microns.
    Type: Application
    Filed: September 5, 2008
    Publication date: December 25, 2008
    Inventors: Woo Choi, Jun-Yeob Lee
  • Patent number: 7432648
    Abstract: An EL display is provided with enhanced light emission characteristics wherein light emitted from a light-emitting layer undergoes constructive interference due to a resonance effect. The EL display includes a transparent substrate, an anode and a cathode formed on the same side of the transparent substrate, and an intermediate layer interposed between the anode and the cathode, and said intermediate layer including a light-emitting layer that emits light when the anode and the cathode are electrically driven by a voltage, and wherein the anode and the cathode are formed as a translucent conductive layer that partially reflects the light emitted from the light-emitting layer.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: October 7, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jun-Yeob Lee, Han-Ju Lee, Jun-Sik Oh
  • Patent number: 7428033
    Abstract: A panel for a liquid crystal display including a substrate, and at least one spacer formed over the substrate. The at least one spacer has a tapered shape with an inclination angle in the range of about 20—about 70 degrees and a height in the range of about 2.5—about 5.0 microns.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: September 23, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woo Choi, Jun-Yeob Lee
  • Patent number: 7285904
    Abstract: An organic EL display includes an anode electrode; a cathode electrode; at least one organic layer selected from a hole transport layer, a hole injection layer, a light-emitting layer, an electron transporting layer, and an electron injection layer between the anode electrode and the cathode electrode; and at least one organic compound derivative layer arranged between the anode electrode and the cathode electrode, the organic compound derivative layer having a structure of formula: R1R2MR3R4, where “M” is one metal selected from a group consisting of Ti, Pt and one metal belonging to groups 13 and 14 of periods 3 to 5.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: October 23, 2007
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Jun-Yeob Lee
  • Patent number: 7201859
    Abstract: The present invention discloses a hole transport layer of an organic EL display, comprising: a material including one of a PEDOT which is a mixture of a poly (3,4)-ethylenedioxythiophene and a polystyrenesulfonate, a PANI which is a mixture of a polyaniline and a polystyrenesulfonate, and an aromatic amine derivative; and an organic compound derivative having the general structure, R1R2MR3R4, where “M” denotes one metal selected from a group consisting of Ti, Pt and one metal among elements belonging to groups 3A and 4A of periods 3 to 5.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: April 10, 2007
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jun-Yeob Lee, Young-Sook Choi, Michael Redecker, Kerstin Nolte
  • Publication number: 20070075310
    Abstract: Provided is an organic light-emitting display device that can display a full color image by forming a simple structure of light-emitting layers and a method of manufacturing the same. The organic light-emitting display device includes a substrate; a first electrode layer formed on the substrate; a second electrode layer which is formed above the first electrode layer and faces the first electrode layer; and a light-emitting layer interposed between the first electrode layer and the second electrode layer, wherein the light-emitting layer comprises first and second light-emitting layers respectively corresponding to first and second pixels having different colors from each other, and the first light-emitting layer is commonly formed in the first and second pixels, and the second light-emitting layer is formed in the second pixel.
    Type: Application
    Filed: August 31, 2006
    Publication date: April 5, 2007
    Inventor: Jun-Yeob Lee
  • Publication number: 20070024798
    Abstract: A panel for a liquid crystal display including a substrate, and at least one spacer formed over the substrate. The at least one spacer has a tapered shape with an inclination angle in the range of about 20-about 70 degrees and a height in the range of about 2.5-about 5.0 microns.
    Type: Application
    Filed: October 4, 2006
    Publication date: February 1, 2007
    Inventors: Woo Choi, Jun-Yeob Lee
  • Publication number: 20070012915
    Abstract: An organic light emitting display device is disclosed. The device includes a substrate; a first electrode formed on the substrate; an organic layer including at least an emission layer and formed on the first electrode; and a second electrode formed on the organic layer. The emission layer includes a host and a dopantmaterial. The dopant is one of materials having the structure of Formula 1, where R may be one selected from the group consisting of ethylene, an ethylene derivative, stilbene, a stilbene derivative. Also, R1 to R6 may be different from or equal to each other, and each is selected from the group consisting of a hydrogen atom, a halogen atom, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C5 to C20 aryl group, a C3 to C30 heterocyclic group, and an aliphatic C3 to C30 hydrocarbon group.
    Type: Application
    Filed: July 14, 2006
    Publication date: January 18, 2007
    Inventors: Jun-Yeob Lee, Min-Seung Chun, Yong-Joong Choi
  • Patent number: 7142277
    Abstract: A panel for a liquid crystal display including a substrate, and at least one spacer formed over the substrate. The at least one spacer has a tapered shape with an inclination angle in the range of about 20–about 70 degrees and a height in the range of about 2.5–about 5.0 microns.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: November 28, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woo Choi, Jun-Yeob Lee
  • Publication number: 20060263631
    Abstract: An organic light-emitting device is provided that includes an emission layer containing a phosphorescent dopant and a bipolar phosphorescent host interposed between a first electrode and a second electrode. The bipolar phosphorescent host is a compound represented by formula 1: A-C-B ??(1) where A is a hole transport unit, B is an electron transport unit, and C is a bond or a linking group. The bipolar compound can transport both holes and electrons. The organic light-emitting device has high efficiency and a long lifetime.
    Type: Application
    Filed: November 4, 2005
    Publication date: November 23, 2006
    Inventors: Jun-Yeob Lee, Jang-Hyuk Kwon, Min-Seung Chun, Yong-Joong Choi
  • Patent number: 7126271
    Abstract: An organic electroluminescent display device including a first electrode and a second electrode formed on a substrate, and a plurality of organic film layers between the first and second electrodes, including a first organic film layer provided between the emitting layer and the second electrode, and a second organic film provided between the emitting layer and the first organic film layer, wherein the first organic film layer includes a first organic metal complex compound, and the second organic film layer includes a mixture of a charge carrier transport material and a second organic metal complex compound.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: October 24, 2006
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jun Yeob Lee, Jang Hyuk Kwon, Yong Joong Choi
  • Publication number: 20060226770
    Abstract: Organic light emitting devices are provided. One organic light emitting device includes a buffer layer including a fullerene-based material and a hole injection layer and/or a hole transport layer doped with the fullerene-based material.
    Type: Application
    Filed: April 11, 2006
    Publication date: October 12, 2006
    Inventors: Jun-Yeob Lee, Min-Seung Chun
  • Publication number: 20060222888
    Abstract: Provided are an organic light-emitting device that includes a light-emitting layer interposed between a first electrode and a second electrode and a method of manufacturing the same. The light-emitting layer includes a mixed host of a naphthyl anthracene-based compound and a bianthracene-based compound and a dopant. The use of the mixed host of a naphthyl anthracene-based compound and a bianthracene-based compound and a dopant to form the light-emitting layer results in trapping of charges in the light-emitting layer. As a result, the organic light-emitting device is more stabilized and thus has a longer lifetime, excellent color characteristics, and high efficiency.
    Type: Application
    Filed: March 9, 2006
    Publication date: October 5, 2006
    Inventors: Jun-Yeob Lee, Min-Seung Chun
  • Publication number: 20060199038
    Abstract: Provided is an organic EL device including a light-emitting layer between a first electrode and a second electrode, wherein the light-emitting layer includes a matrix polymer, two or more phosphorescent host materials, and at least one phosphorescent dopant. The organic EL device can increase an energy transfer efficiency by use of a mixture of phosphorescent host materials, and thus have better efficiency and lifetime characteristics, and can be produced by a solution process such as spin-coating.
    Type: Application
    Filed: February 24, 2006
    Publication date: September 7, 2006
    Inventor: Jun-Yeob Lee
  • Publication number: 20060166586
    Abstract: A method for fabricating a display device includes providing a substrate, forming an underlying layer over the substrate, forming an insulating layer over the substrate exposing the underlying layer, and forming an organic EL layer on the exposed portion of the underlying layer by a Laser Induced Thermal Imaging (LITI) method, wherein a thickness of the insulating layer is less than 500 nm.
    Type: Application
    Filed: December 21, 2005
    Publication date: July 27, 2006
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Jun-yeob Lee, Tae-min Kang, Jang-jyuk Kwon, Seong-taek Lee, Jun-hyo Chung, Eung-jin Kim
  • Publication number: 20060115679
    Abstract: An organic electroluminescent device includes an emission layer interposed between a first electrode and a second electrode. The emission layer may be composed of a host material and a phosphorescent dopant material. The host material may be composed of a mixture of a hole transport material and an electron transport material. The hole transport material may be a carbazole compound and the electron transport material may include at least a compound selected from spirofluorenes and organic metal complexes. The use of the mixture facilitates the re-combination of holes and electrons in neighboring organic layers, thus decreasing the driving voltage and increasing the luminous efficiency and lifetime of the organic electroluminescent device.
    Type: Application
    Filed: November 23, 2005
    Publication date: June 1, 2006
    Inventors: Min-Seung Chun, Jun-Yeob Lee, Yong-Joong Choi