Patents by Inventor Chang Ho Lee

Chang Ho 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).

  • Patent number: 8736546
    Abstract: A display device includes a display panel configured to display an image in an upward direction and a reflective panel on the display panel, the reflective panel configured to selectively transmit or reflect light with respect to an area corresponding to the image.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: May 27, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Il-Soo Oh, Chang-Ho Lee, Hee-Joo Ko, Hyung-Jun Song, Se-Jin Cho, Jin-Young Yun, Bo-Ra Lee, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Publication number: 20140139288
    Abstract: Techniques for providing adjustable gain in an amplifier. In an aspect, a composite amplifier having adjustable gain includes a plurality of amplifiers coupled in parallel, wherein each of the amplifiers may be turned on or off to adjust the overall gain of the composite amplifier. Each amplifier may include an input transistor and at least two cascode transistors. To turn each amplifier off, the gate voltage of a second or lowermost cascode transistor coupled to the input transistor may be grounded, and the gate voltage of a first cascode transistor coupled to the output voltage may be coupled to a first turn-off voltage to reduce the drain-to-gate voltage drop across the first cascode transistor.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 22, 2014
    Applicant: QUALCOMM INCORPORATED
    Inventors: Jeongwon Cha, Chang-Ho Lee, Aristotele Hadjichristos
  • Publication number: 20140138646
    Abstract: An organic light-emitting diode (OLED) display apparatus including a substrate, an insulation layer on the substrate, and an align mark formed of an insulation material, wherein an upper surface of the insulation layer contacts a lower surface of the align mark.
    Type: Application
    Filed: September 9, 2013
    Publication date: May 22, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Chang-Ho Lee, Jong-Hyun Park, Seong-Kweon Heo, Chun-Gi You
  • Patent number: 8730144
    Abstract: A driving circuit includes a plurality of stages driven in response to a start signal. Each normal stage outputs a gate signal and a carry signal, increases an electric potential of a node in response to a previous carry signal of a previous stage, and decreases the gate signal to a first voltage in response to a carry signal from a next stage. Each stage applies a second voltage lower than the first voltage to the node in response to receipt of a carry signal from a second next stage. A first dummy stage outputs a first dummy carry signal to the last two normal stages in response to a last carry signal from the last normal stage and the start signal, and a second dummy stage outputs a second dummy carry signal to the last normal stage in response to the first dummy carry signal and the start signal.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: May 20, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang Ho Lee, Jaehoon Lee
  • Publication number: 20140132531
    Abstract: A method and an apparatus for operating an electronic device for changing a setting value are provided. In the method, a touch input for a set region is detected, so that a mode is switched to a setting change mode for changing a stored setting value. At least one guide interface for receiving a change of at least one setting value among stored setting values is displayed. A predetermined gesture for an arbitrary region of the displayed at least one guide interface is detected, so that whether to store a changed at least one setting value is determined.
    Type: Application
    Filed: August 23, 2013
    Publication date: May 15, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Chang-Ho LEE
  • Patent number: 8716928
    Abstract: Provided is an organic light emitting device including an anode, a cathode, and a light emitting layer disposed between the anode and the cathode, wherein the cathode has a structure including a first metal layer and a second metal layer, or a structure including a first metal layer, a second metal layer, and one selected from the group consisting of an oxide layer, a nitride layer, and a nitric oxide layer, and wherein the cathode has low resistance.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: May 6, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Tak Kim, Won-Jong Kim, Joon-Gu Lee, Jin-Baek Choi, Chang-Ho Lee, Il-Soo Oh, Hee-Ju Ko, Se-Jin Cho, Jin-Young Yun, Hyung-Jun Song, Kyu-Hwan Hwang, Jong-Hyuk Lee
  • Patent number: 8686420
    Abstract: An organic light emitting diode (OLED) display includes a substrate including a plurality of pixels defined thereon, a thin film transistor (TFT) positioned at each pixel, a negative electrode electrically connected to the TFT, an organic emission layer positioned on the negative electrode, and a positive electrode positioned on the organic emission layer, the positive electrode including an auxiliary layer positioned on the organic emission layer, a conductive layer positioned on the auxiliary layer, and an insulation layer positioned on the conductive layer.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: April 1, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Il-Soo Oh, Chang-Ho Lee, Hee-Joo Ko, Se-Jin Cho, Hyung-Jun Song, Jin-Young Yun, Jong-Hyuk Lee
  • Publication number: 20140077175
    Abstract: A condensed-cyclic compound and an organic light-emitting diode including the condensed-cyclic compound.
    Type: Application
    Filed: March 13, 2013
    Publication date: March 20, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hye-Jin Jung, Seok-Hwan Hwang, Young-Kook Kim, Jin-O Lim, Sang-Hyun Han, Eun-Jae Jeong, Soo-Yon Kim, Jun-Ha Park, Eun-Young Lee, Chang-Ho Lee, Jong-Hyuk Lee
  • Publication number: 20140063712
    Abstract: A portable device includes a keyboard unit; a display unit; a connection unit which is connected to each of the keyboard unit and the display unit, moves relatively with respect to each of the keyboard unit and the display unit, and supports the display unit so that the display unit covers or uncovers the keyboard unit; and a controller which is placed inside the connection unit and controls operation of the portable device.
    Type: Application
    Filed: July 12, 2013
    Publication date: March 6, 2014
    Inventors: Won-seok CHUNG, Zion KWON, Chang-ho LEE, Han-kyung JI, Se-hun OH, Yeo-wan YUN
  • Publication number: 20140062982
    Abstract: A pixel capable of realizing desired brightness and of displaying a uniform image is disclosed. In one aspect, the pixel includes an organic light emitting diode (OLED), a first transistor having a second electrode thereof coupled to an anode electrode of the OLED to control an amount of current supplied to the OLED in response to a voltage applied to a gate electrode thereof. The pixel also includes at least one second transistor coupled between the second electrode and the gate electrode of the first transistor, and a third transistor coupled between the second transistor and the gate electrode of the first transistor. The third transistor is turned off in a partial period of a period in which the second transistor is turned on.
    Type: Application
    Filed: December 6, 2012
    Publication date: March 6, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Chang-Ho Lee, Yang-Wan Kim
  • Publication number: 20140055212
    Abstract: A high power tunable capacitor is disclosed. In an exemplary embodiment, an apparatus includes a capacitor coupled to an input signal, a body contacted switch coupled to the capacitor, the body contacted switch coupled to a body bias signal, and a floating body switch coupled between the body contacted switch and a ground, the floating body switch configured to decouple the body bias signal from the ground.
    Type: Application
    Filed: August 23, 2012
    Publication date: February 27, 2014
    Applicant: QUALCOMM INCORPORATED
    Inventors: Minsik Ahn, Kyu Hwan An, Chang-Ho Lee, Aristotele Hadjichristos
  • Patent number: 8659010
    Abstract: A photoluminescence diode which may decrease a driving voltage may include an anode, a cathode, an emission layer interposed between the anode and the cathode, and an electron accepting layer interposed between the emission layer and the cathode and including one material selected from fullerene, methanofullerene, doped fullerene, doped methanofullerene, a derivative thereof, and a mixture thereof.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: February 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyung-Jun Song, Chang-Ho Lee, Il-Soo Oh, Hee-Joo Ko, Se-Jin Cho, Jin-Young Yun, Bo-Ra Lee, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Publication number: 20140043206
    Abstract: A multi-throw antenna switch with off-state capacitance reduction is disclosed. In an exemplary embodiment, an apparatus is provided that includes a plurality of first stage switches connected to an antenna, and a plurality of second stage switches connected to the plurality of first stage switches, each first stage switch connected in series to one or more second stage switches to form a plurality of switchable signal paths connected to the antenna.
    Type: Application
    Filed: August 9, 2012
    Publication date: February 13, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Minsik Ahn, Chang-Ho Lee, Aristotele Hadjichristos
  • Publication number: 20140014925
    Abstract: A compound represented by Formula 1 below and an organic light-emitting device including the compound are provided: Substituents in Formula 1 are the same as defined in the specification.
    Type: Application
    Filed: June 21, 2013
    Publication date: January 16, 2014
    Inventors: Hye-Jin Jung, Seok-Hwan Hwang, Young-Kook Kim, Jin-O Lim, Sang-Hyun Han, Eun-Jae Jeong, Soo-Yon Kim, Jun-Ha Park, Eun-Young Lee, Chang-Ho Lee, Jong-Hyuk Lee
  • Patent number: 8625055
    Abstract: An organic light emitting display device includes a substrate having a transmitting region interposed between pixel regions; thin film transistors on a first surface of the substrate; a passivation layer covering the thin film transistors; pixel electrodes on the passivation layer; an opposite electrode disposed to face the pixel electrodes; an organic emission layer between the pixel electrodes and the opposite electrode; a polymer dispersed liquid crystal (PDLC) device disposed such that the thin film transistors are between the PDLC device and the passivation layer, the PDLC device having: a first electrode; a second electrode; and a PDLC layer in which liquid crystal is dispersed in polymer matrix. Distortion of images transmitted through the organic light emitting display device is prevented by restricting scattering of the transmitted light, the transmission of the external light may be adjusted simply, and degradation of the brightness and color coordinate reproduction may be prevented.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: January 7, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyung-Jun Song, Jong-Hyuk Lee, Chang-Ho Lee, Il-Soo Oh, Hee-Jo Ko, Si-Jin Cho, Jin-Young Yun
  • Patent number: 8604501
    Abstract: An organic light emitting display device includes a substrate; a first electrode layer formed on the substrate; an emission structure layer formed on the first electrode layer; an electron injection layer (EIL) formed immediately on the emission structure layer and comprising a composite layer of LiF:Yb; and a second electrode layer formed on the EIL.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: December 10, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Young Yun, Seok-Gyu Yoon, Chang-Ho Lee, IL-Soo Oh, Hee-Joo Ko, Se-Jin Cho, Hyung-Jun Song, Sung-Chul Kim, Jong-Hyuk Lee
  • Patent number: 8570235
    Abstract: Example embodiments of the invention are directed to CMOS differential antenna switches with multi-section impedance transformation. The differential architecture can provide relief from large voltage swings of the power amplifiers by distributing the voltage stress over the receiver switch with two of the identical or substantially similar single-ended switches. In order to reduce the voltage stress further, multi-section impedance transformations can be used. Degraded insertion loss due to the impedance transformation technique can be compensated by selecting an optimal impedance for the antenna switch operation. Accordingly, the use of the multi-section impedance transformations with the differential antenna switch architecture enables high power handling capability for the antenna switch with acceptable efficiency for the transmitter module.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: October 29, 2013
    Assignee: Samsung Electro-Mechanics
    Inventors: Minsik Ahn, Chang-Ho Lee
  • Publication number: 20130250472
    Abstract: A multilayer ceramic electronic component includes a ceramic main body having internal and floating electrode layers laminated therein and spaced apart from each other; and external electrodes formed on ends of the ceramic main body and including a first layer including a conductive metal and a second layer formed on the first layer and including a conductive resin. When Tc is thickness of a cover layer, G is gap between internal electrodes, L1 is length from either end of the ceramic main body in a length direction thereof to an end of the first layer formed on the upper or lower surface of the ceramic main body, Te is thickness of the internal electrode, Td is distance between internal and floating electrode layers, Lm is length of a margin part of the floating electrode layer, and L is length of the ceramic main body, Tc?80 ?m, (1.5)Lm?G?(L?2Lm), and L1<Lm+(Tc+Te+Td)×cot 50° are satisfied.
    Type: Application
    Filed: January 18, 2013
    Publication date: September 26, 2013
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Chang Ho LEE
  • Publication number: 20130245094
    Abstract: The present invention relates to an aptazyme comprising an aptamer for hepatitis C virus (HCV) RNA-encoding component; a hammerhead ribozyme comprising an antisense sequence to microRNA at the site released by self-cleavage; and a communication module sequence that connects the aptamer and hammerhead ribozyme and triggers a self-cleavage activity of the hammerhead ribozyme upon binding of the aptamer with the HCV RNA-encoding component. The present aptazyme inhibits microRNA activity specifically in HCV proliferating cells and thus a composition of the present invention comprising the aptazyme can be effectively used for treatment of HCV-related diseases.
    Type: Application
    Filed: September 16, 2011
    Publication date: September 19, 2013
    Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION DANKOOK UNIVERSITY
    Inventors: Seong-Wook Lee, Chang-Ho Lee
  • Patent number: D706762
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: June 10, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-Ho Lee, Zi-On Kwon, Jochen Backs, Won-Suk Chung, Han-Kyung Ji