Patents by Inventor Se Jin Cho

Se Jin Cho 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: 10505117
    Abstract: An organic light emitting diode device includes a first electrode, a second electrode, an organic emission layer, an electron transport layer and a buffer layer. The second electrode is opposite to the first electrode. The organic emission layer is located between the first and second electrodes. The electron transport layer is located between the organic emission layer and the second electrode. The buffer layer is located between the organic emission layer and the electron transport layer, and is made of at least one material selected from a pyrene compound represented by the following Chemical Formula 1, an anthracene compound represented by the following Chemical Formula 2 and a combination thereof: Here, the definitions of R1, R2 and A are as described in the specification.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: December 10, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Jin Cho, Chang-Min Lee
  • Patent number: 10249824
    Abstract: Embodiments of the present invention are directed to a condensed-cyclic compound represented by Formula 1, and to an organic light-emitting diode including the same.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: April 2, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bum-Woo Park, Yoon-Hyun Kwak, Sun-Young Lee, Se-Jin Cho
  • Patent number: 9825244
    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: June 29, 2016
    Date of Patent: November 21, 2017
    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
  • Patent number: 9711579
    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: July 1, 2016
    Date of Patent: July 18, 2017
    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
  • Patent number: 9567287
    Abstract: A compound represented by Formula 1 below may be used in an organic light emitting diode. Additionally, in some embodiments, an organic light-emitting diode includes a first electrode, a second electrode, and an organic layer between the first electrode and the second electrode and including the compound represented by Formula 1.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: February 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Ha Park, Seok-Hwan Hwang, Young-Kook Kim, Hye-Jin Jung, Eun-Young Lee, Jin-O Lim, Sang-Hyun Han, Eun-Jae Jeong, Soo-Yon Kim, Se-Jin Cho, Jong-Hyuk Lee
  • Patent number: 9515280
    Abstract: An organic light emitting device, and a manufacturing method of the same, in which in a light emitting layer, an electron trap material is introduced so as to improve a light emitting property and an operating characteristic and to prolong a life span.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: December 6, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Young Yun, Chang-Ho Lee, Dae-Yup Shin, Young-Mok Son, Il-Soo Oh, Hee-Joo Ko, Se-Jin Cho, Bo-Ra Lee, Yeon-Woo Lee, Beom-Joon Kim, Jung-Geun Lee, Young-Woo Song
  • Publication number: 20160315132
    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: Application
    Filed: July 1, 2016
    Publication date: October 27, 2016
    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
  • Publication number: 20160308157
    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: Application
    Filed: June 29, 2016
    Publication date: October 20, 2016
    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
  • 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
  • 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
  • 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
  • Patent number: 9309197
    Abstract: A heterocyclic compound represented by Formula 1 below, an organic light-emitting diode including the same, and a flat panel display device including the organic light-emitting diode: where X is *—Ar1 or wherein Ar1, Ar2, R1, R2, R3, R4, Y1, Y2, Y3, Y4, a, b, c, and d are as defined in the specification.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: April 12, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Kook Kim, Seok-Hwan Hwang, Hye-Jin Jung, Jin-O Lim, Sang-Hyun Han, Se-Jin Cho, Jong-Hyuk Lee
  • Patent number: 9312497
    Abstract: Provided are a heterocyclic compound represented by Formula 1 below, and an organic light-emitting diode and a flat display device each including the heterocyclic compound. The organic light-emitting diode including an organic layer including the heterocyclic compound has a low driving voltage, high luminescence efficiency, and long lifetime.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: April 12, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Hyun Han, Seok-Hwan Hwang, Young-Kook Kim, Hye-Jin Jung, Jin-O Lim, Se-Jin Cho, Jong-Hyuk Lee
  • Patent number: 9293736
    Abstract: An organic light emitting element includes a first electrode, a second electrode, and an organic layer. The organic layer includes a first emission layer between the first electrode and the second electrode, a second emission layer between the first emission layer and the second electrode, and an electron injection layer (EIL) between the first emission layer and the second emission layer, the electron injection layer (EIL) containing fullerene (C60).
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: March 22, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Joo Ko, Se-Jin Cho, Bo-Ra Lee, Chang-Ho Lee, Il-Soo Oh, Hyung-Jun Song, Jin-Young Yun, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Patent number: 9293710
    Abstract: An organic light-emitting diode including a buffer layer including an amine-based compound.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: March 22, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-Jin Cho, Chang-Ho Lee, Dae-Yup Shin, Young-Mok Son, ll-Soo Oh, Hee-Joo Ko, Jin-Young Yun, Bo-Ra Lee, Seok-Hwan Hwang, Young-Kook Kim, Yoon-Hyun Kwak
  • Patent number: 9278927
    Abstract: A heterocyclic compound represented by Formula 1 or Formula 2 below, and an organic light-emitting device including the heterocyclic compound. The organic light-emitting device may include an organic layer containing the heterocyclic compound, and thus may have a low driving voltage, a high-emission efficiency, and long lifespan characteristics. wherein R1 to R12, Ar1, Ar2, A, B, a, and b are defined as in the specification.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: March 8, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Kook Kim, Seok-Hwan Hwang, Hye-Jin Jung, Jin-O Lim, Sang-Hyun Han, Se-Jin Cho, Jong-Hyuk Lee
  • Patent number: 9282612
    Abstract: A dual mode organic light emitting device and a pixel circuit including the same are disclosed. The dual mode organic light emitting device includes a cathode formed over a substrate, an electron transport layer (ETL) formed over the cathode, an emission layer formed over the electron transport layer (ETL), and an anode formed over the emission layer, wherein the cathode includes a first metal selected from silver (Ag), aluminum (Al), copper (Cu), and gold (Au) and a second metal having a work function of about 4.0 eV or less, and the first metal and the second metal are present at a weight ratio of about 1:1 to about 1:100.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: March 8, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bo-Ra Lee, Chang-Ho Lee, Il-Soo Oh, Jin-Young Yun, Hee-Joo Ko, Se-Jin Cho, Hyung-Jun Song, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Patent number: 9269918
    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: Grant
    Filed: October 29, 2013
    Date of Patent: February 23, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    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
  • Patent number: 9219103
    Abstract: An organic light emitting diode display is disclosed. The display includes some pixel areas which are opaque and some pixel areas which are partially opaque and partially transparent. Selectively displaying the light emission of the pixel areas allows for control of the relative brightness of a displayed image and an object behind the display.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: December 22, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang-Ho Lee, Hee-Joo Ko, II-Soo Oh, Se-Jin Cho, Jin-Young Yun, Hyung-Jun Song, Young-Woo Song, Kyu-Hwan Hwang, Seok-Gyu Yoon, Jae-Heung Ha, Jong-Hyuk Lee
  • Patent number: 9178001
    Abstract: The present invention provides an organic light emitting diode comprising a substrate comprising a first sub-pixel, a second sub-pixel, and a third sub-pixel; a first electrode disposed on the substrate; a second electrode facing the first electrode; an emission layer disposed between the first electrode and the second electrode; and a first layer disposed between the first electrode and the second electrode and containing an ambipolar compound, and a method for manufacturing the organic light emitting diode.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: November 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yoon-Hyun Kwak, Sun-Young Lee, Bum-Woo Park, Chang-Ho Lee, Se-Jin Cho, Jong-Hyuk Lee, Hee-Joo Ko