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).

  • Organic light emitting diode display
    Patent number: 9466816
    Abstract: An organic light emitting display includes: a substrate; a first electrode on the substrate; an organic light emitting layer on the first electrode; a second electrode formed on the organic light emitting layer; a non-resonance reflection inducing layer on the second electrode; and a capping layer on the non-resonance reflection inducing layer.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: October 11, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Nam Su Kang, Ji Hye Shim, Ji Hwan Yoon, Chang Ho Lee, Hyun Ju Choi
  • Touch screen display
    Patent number: 9460690
    Abstract: A touch screen display is disclosed. In one aspect, the touch screen display includes a plurality of first touch electrodes each including first and second ends opposing each other and a plurality of second touch electrodes crossing the first touch electrodes. The touch screen display also includes a first voltage line providing a voltage, a first signal line providing a touch driving signal, and a plurality of first switching units respectively connected to the first touch electrodes. Each of the first switching units is electrically connected to the first voltage line, the first signal line, and the first end of a corresponding first touch electrode. Each of the first switching units alternately provides one of the voltage and the touch driving signal to the corresponding first touch electrode.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: October 4, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Du Roh, Jin-Tae Jeong, Chang-Ho Lee
  • ORGANIC LIGHT-EMITTING DIODE DISPLAY APPARATUS AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20160284775
    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: June 10, 2016
    Publication date: September 29, 2016
    Inventors: Chang-Ho Lee, Jong-Hyun Park, Seong-Kweon Heo, Chun-Gi You
  • USER INFORMATION PROCESSING METHOD AND ELECTRONIC DEVICE SUPPORTING THE SAME
    Publication number: 20160269491
    Abstract: An electronic device includes a display configured to output an object, and a processor configured to manage a session connection between the electron device and an external server device and cause the display to display an information provision state object indicating a user information transmission state. A method for processing user information in an electronic device includes managing a session connection between the electronic device and an external server device and displaying an information provision state object indicating a user information transmission state.
    Type: Application
    Filed: March 8, 2016
    Publication date: September 15, 2016
    Inventors: Yu Youl Eom, Suk Hyung Lee, Chang Ho Lee, Pyeong Gyu Jin, Jae Bong Yoo, Deung Hyeon Jeong
  • METHOD AND APPARATUS FOR PROVIDING CARD SERVICE USING ELECTRONIC DEVICE
    Publication number: 20160253657
    Abstract: A method and an apparatus for a card service in which an electronic device (e.g., smart phone) and a sub-electronic device (e.g., wearable device) are provided. The method and apparatus include the operations of interconnecting an electronic device and a sub-electronic device through a secure session, guaranteeing the sub-electronic device by the electronic device, issuing a card for and authenticating the sub-electronic device, based on information of the sub-electronic device and account information of the electronic device. Various embodiments are possible.
    Type: Application
    Filed: February 26, 2016
    Publication date: September 1, 2016
    Inventors: Se Chang SOHN, Won-Kyu KWON, Geon-Soo KIM, Kyeonghun LEE, Chang-Ho LEE, Cheroo LEE
  • Pixel circuit of an organic light emitting display device and organic light emitting display device including the same
    Patent number: 9412305
    Abstract: A pixel circuit according to an embodiment includes: a capacitor; a first switching unit configured to initialize the capacitor in response to a first scan signal received from a first scan line; a second switching unit configured to receive a second scan signal from a second scan line disposed in a first direction from the first scan line, to receive a third scan signal from a third scan line disposed in a second direction opposite to the first direction from the first scan line, and to be turned on in response to one of the second scan signal and the third scan signal that is activated after the first scan signal is activated to store a data signal in the capacitor; and a driving transistor configured to provide a driving current to an OLED in response to the data signal stored in the capacitor.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: August 9, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventor: Chang-Ho Lee
  • OPTICAL IMAGING APPARATUS FOR MULTI-DEPTH IMAGE
    Publication number: 20160220120
    Abstract: Provided are an optical imaging apparatus for multi-depth image and an imaging system having the same, where an optical lens of a sample stage of an optical imaging apparatus is used as a liquid lens, so that it is possible to acquire an optical image such as a photoacoustic image, an optical coherence tomography image, or a fluorescent image while finely and speedily changing a depth, and it is possible to acquire optical images having various depths by only user's simple control.
    Type: Application
    Filed: February 2, 2016
    Publication date: August 4, 2016
    Inventors: Chul Hong KIM, Dong Sung KIM, Man Sik JEON, Chang Ho LEE, Won Kyung KIM
  • Liquid crystal display device
    Patent number: 9396696
    Abstract: A liquid crystal display (“LCD”) device includes a display panel, a data driving part, and at least one first light-blocking part and at least one second light-blocking part. The display panel includes a plurality of pixels and a plurality of data lines. The pixels are arranged in a column direction and a row direction. At least one of the data lines extends in a zigzag shape along the column direction to be discontinuously disposed between two adjacent columns of the pixels. The at least one data line is electrically connected to two of the pixels that are adjacent in the row direction. The second light-blocking part is thinner than the first light-blocking part. The first light-blocking part and the second light-blocking are repeatedly disposed on an area between two adjacent columns of the pixels. The data driving part applies a data signal to the data lines.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: July 19, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sung-Man Kim, Hong-Woo Lee, Chang-Ho Lee, Eung-Gyu Lee, Yu-Jun Kim, Yu-Jin Kim, Jin-Suk Seo, Byung-Su Oh
  • Organic light emitting diode display
    Patent number: 9391124
    Abstract: An organic light emitting diode (OLED) display includes a substrate, a thin film transistor disposed on the substrate, a first electrode disposed on the thin film transistor and electrically connected to the thin film transistor, a first auxiliary layer disposed on the first electrode, an emission layer disposed on the first auxiliary layer, an electron transport layer disposed on the emission layer, a first buffer layer disposed on the electron transport layer, and a second electrode disposed on the first buffer layer.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: July 12, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Il Soo Oh, Chang Ho Lee, Ji Hwan Yoon, Dae Yup Shin, Hee Joo Ko, Se Jin Cho, Jin Young Yun, Bora Lee, Yeon-Woo Lee, Beom Joon Kim, Pyung Eun Jeon, Hyun Ju Choi, Joong Won Sim, In Jae Lee
  • Wireless power transmission and charging system and method thereof
    Patent number: 9391671
    Abstract: A wireless power transmission and charging system is provided. The wireless power transmission and charging system may include a source device to wirelessly transmit a power, and a target device to wirelessly receive the power. A communication error may be reduced, and a power transmission efficiency may be increased, by performing communication between the source device and the target device using a shortened packet generated by converting, for example, a packet of a byte scale to a packet of a bit scale.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: July 12, 2016
    Assignees: Samsung Electronics Co., Ltd., LCLINK Co., Ltd.
    Inventors: Nam Yun Kim, Chang Ho Lee, Sang Wook Kwon, Yun Kwon Park, Young Tack Hong
  • Pixel and organic light emitting display using the same
    Patent number: 9390648
    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: Grant
    Filed: December 6, 2012
    Date of Patent: July 12, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang-Ho Lee, Yang-Wan Kim
  • Chip resistor
    Patent number: 9390844
    Abstract: A chip resistor may include: a body having a plurality of substrates stacked therein; a plurality of resistors formed in the body with respective substrates interposed therebetween and exposed through both end surfaces of the body; and first and second electrodes covering both end surfaces of the body, respectively, and connected to both end portions of the exposed resistors, respectively.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: July 12, 2016
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sung Hun Cho, Young Key Joo Kim, Chang Ho Lee, Byung Sung Kang
  • Organic light-emitting device using a mixture of electron transporting compounds
    Patent number: 9385336
    Abstract: Provided is an organic light-emitting device including a first electrode, a second electrode disposed opposite to the first electrode, an emission layer disposed between the first electrode and the second electrode, and an electron-transporting layer disposed between the emission layer and the second electrode. The electron-transporting layer includes a first electron-transporting material and a second electron-transporting material. The lowest unoccupied molecular orbital (LUMO) energy level of the first electron-transporting material (EL1) and the lowest unoccupied molecular orbital (LUMO) energy level of the second electron-transporting material (EL2) satisfy the equation 0.1 eV?|EL1?EL2|?0.3 eV.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: July 5, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Se-Jin Cho, Chang-Ho Lee, Dae-Yup Shin, Young-Mok Son, Il-Soo Oh, Hee-Joo Ko, Jin-Young Yun, Bo-Ra Lee, Yeon-Woo Lee, Beom-Joon Kim, Pyung-Eun Jeon, Hyun-Ju Choi, Chang-Min Lee
  • Organic light-emitting diode display apparatus and method of manufacturing the same
    Patent number: 9368745
    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: Grant
    Filed: September 9, 2013
    Date of Patent: June 14, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang-Ho Lee, Jong-Hyun Park, Seong-Kweon Heo, Chun-Gi You
  • Method for fabricating organic light emitting device
    Patent number: 9368743
    Abstract: A method of fabricating an organic light emitting device includes forming a first electrode layer on a substrate, surface-treating the first electrode layer with CF4 plasma, forming a first common layer containing pentacene on the surface-treated first electrode layer, forming an organic light emitting layer on the first common layer, forming a second common layer on the organic light emitting layer, and forming a second electrode layer on the second common layer. The CF4 plasma treatment enhances the luminous efficiency of the organic light emitting device.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: June 14, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun Ju Choi, Chang Ho Lee, Ilsoo Oh, HeeJoo Ko, Dae Yup Shin, KeonHa Choi, Changmin Lee, Injae Lee, Pyungeun Jeon, Sejin Cho, JinYoung Yun, Bora Lee, Beomjoon Kim, Yeon woo Lee, Ji Hye Shim, Joongwon Sim
  • APPARATUS FOR TESTING ELECTRONIC DEVICES
    Publication number: 20160139198
    Abstract: An apparatus for testing electronic devices may include a test chamber, a heating unit, a cooling unit and a controller. The test chamber may include a plurality of slots configured to receive the electronic devices. The heating unit may heat the electronic devices in the slots. The cooling unit may individually cool the electronic devices in the slots. The controller may selectively control operations of the heating unit and the cooling unit in accordance with temperatures in the slots. Thus, the electronic devices may be provided with a uniform test temperature so that reliability of test results may be improved.
    Type: Application
    Filed: October 22, 2015
    Publication date: May 19, 2016
    Inventors: Bo-Seong Park, Joo-In Song, Min-Woo Kim, Hye-ju Kim, Chang-Ho Lee, Jong-Hwan Lim
  • Organic light emitting diode and organic light emitting display apparatus having the same
    Patent number: 9343693
    Abstract: An organic light emitting diode includes a hole injection layer, a hole transport layer, an optical compensation layer, an emission layer, an electron transport layer and an electron injection layer. The optical compensation layer is disposed on the hole transport layer and includes a phosphorescent host material. Thus, an electron barrier on an interface between the optical compensation layer and an emission layer may be reduced. Thus, the luminance efficiency in a low gray scale area may be decreased, and the stain and roll-off phenomenon in the low gray scale area may be improved.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: May 17, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang-Ho Lee, Hyun-Ju Choi
  • Testing device, test system including the same, and method thereof
    Patent number: 9329225
    Abstract: A testing device includes a signal sensing unit and a signal processing unit. The signal sensing unit generates a test output signal by sensing a signal from a device under test including a plurality of passive elements that are connected in parallel. The signal processing unit detects an open-type fault of the plurality of passive elements by measuring an impedance of the device under test based on element characteristic information of the plurality of passive elements.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: May 3, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun-Cheol Kim, Chang-Ho Lee, Jin-Ho Choi, Min-Woo Kim
  • ORGANIC LIGHT-EMITTING DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20160118587
    Abstract: An organic light-emitting display device includes a substrate which includes a plurality of areas, a plurality of first electrodes disposed on the areas of the substrate, respectively, a second electrode disposed on the first electrodes, and a plurality of emitting layers disposed between the first electrodes and the second electrode. At least two of the emitting layers are disposed on all of the areas.
    Type: Application
    Filed: January 4, 2016
    Publication date: April 28, 2016
    Inventors: CHANG HO LEE, JIN YOUNG YUN, DAE YUP SHIN, YOUNG MOK SON, IL SOO OH, HEE JOO KO, SE JIN CHO, BO RA LEE, YEON WOO LEE, PYUNG EUN JEON, HYUN JU CHOI, JI HWAN YOON, BEOM JOON KIM
  • MEMORY TEST APPARATUS
    Publication number: 20160111169
    Abstract: A memory test apparatus includes a test board unit including a first test board configured to load for testing a first memory system including a plurality of memory modules. A second test board is configured to load for testing a second memory system including a plurality of memory modules. A power unit comprises a first power supply unit configured to supply the first test board with a first power for testing the first memory system, a second power supply unit configured to supply the second test board with a second power for testing the second memory system, and a power supply control unit configured to control at least one of a supply timing of the first power and a supply timing of the second power.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 21, 2016
    Inventors: Min-woo Kim, Chang-ho Lee, Chang-yong Park, Bo-won Han