Patents by Inventor Il-Soo Oh

Il-Soo Oh 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: 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: 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: 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: 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
  • Patent number: 9371270
    Abstract: Embodiments of the present disclosure are directed to a compound represented by Formula 1, and to organic light-emitting diodes including the compound.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: June 21, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-O Lim, Seok-Hwan Hwang, Young-Kook Kim, Hye-Jin Jung, Sang-Hyun Han, Soo-Yon Kim, Eun-Jae Jeong, Jun-Ha Park, Eun-Young Lee, Il-Soo Oh, 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: 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: 9231228
    Abstract: An anode for an organic light emitting device which introduces a metal oxide to improve flows of charges, and an organic light emitting device using the anode. The anode for the organic light emitting device has excellent charge injection characteristics, thereby improving power consumption of the organic light emitting device.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: January 5, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won-Jong Kim, Joon-Gu Lee, Ji-Young Choung, Jin-Baek Choi, Yeon-Hwa Lee, Chang-Ho Lee, Il-Soo Oh, Hyung-Jun Song, Jin-Young Yun, Young-Woo Song, Jong-Hyuk Lee
  • Patent number: 9196838
    Abstract: An organic compound represented by Formula 1 below and an organic light-emitting device including the organic compound; Wherein Ar1, Ar2, Ar3, Ar4, a, b, and c are defined as in the specification.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: November 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-O Lim, Seok-Hwan Hwang, Young-Kook Kim, Hye-Jin Jung, Sang-Hyun Han, Soo-Yon Kim, Eun-Jae Jeong, Jun-Ha Park, Eun-Young Lee, Il-Soo Oh, Jong-Hyuk Lee
  • Patent number: 9159947
    Abstract: An organic light-emitting device, including a first electrode, the first electrode having a smaller absolute value of a work function energy level than an absolute value of a work function energy level of ITO, a second electrode facing the first electrode, and an organic layer between the first electrode and the second electrode.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: October 13, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hee-Joo Ko, Chang-Ho Lee, Il-Soo Oh, Se-Jin Cho, Hyung-Jun Song, Jin-Young Yun, Jong-Hyuk Lee
  • Patent number: 9006762
    Abstract: An organic light-emitting device including a substrate, an anode layer on the substrate, the anode layer including WOxNy (2.2?x?2.6 and 0.22?y?0.26), an emission structure layer on the anode layer, and a cathode layer on the emission structure layer.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: April 14, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang-Ho Lee, Hee-Joo Ko, Il-Soo Oh, Hyung-Jun Song, Se-Jin Cho, Jin-Young Yun, Bo-Ra Lee, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Patent number: 8969864
    Abstract: Disclosed is an organic light emitting diode device including an anode, a cathode, an emission layer between the anode and the cathode, and a buffer layer positioned between the emission layer and the anode. The buffer layer includes an oxide, fluoride, quinolate, or acetoacetate compound of an alkaline metal or an alkaline-earth metal, as well as a material having a work function of about 2.6 to about 4.5 eV. The buffer layer also has a thickness of about 30 ? to about 400 ?.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: March 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Il-Soo Oh, Chang-Ho Lee, Hee-Joo Ko, Se-Jin Cho, Hyung-Jun Song, Jin-Young Yun, Bo-Ra Lee, Young-Woo Song
  • Publication number: 20150008394
    Abstract: An organic light emitting diode (OLED) display includes a substrate, a thin film transistor formed on the substrate, a first electrode formed on the thin film transistor and electrically connected to the thin film transistor, a hole injection layer (HIL) formed on the first electrode, a hole transport layer (HTL) formed on the hole injection layer (HIL), an emission layer formed on the HTL, an electron transport layer (ETL) formed on the emission layer, a first buffer layer located on the ETL, and a second electrode formed on the first buffer layer.
    Type: Application
    Filed: December 5, 2013
    Publication date: January 8, 2015
    Applicant: 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
  • Publication number: 20140374713
    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: May 1, 2014
    Publication date: December 25, 2014
    Applicant: 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: 20140353604
    Abstract: Disclosed is an organic light emitting diode device including an anode, a cathode, an emission layer between the anode and the cathode, and a buffer layer positioned between the emission layer and the anode. The buffer layer includes an oxide, fluoride, quinolate, or acetoacetate compound of an alkaline metal or an alkaline-earth metal, as well as a material having a work function of about 2.6 to about 4.5 eV. The buffer layer also has a thickness of about 30 ? to about 400 ?.
    Type: Application
    Filed: October 11, 2013
    Publication date: December 4, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Il-Soo OH, Chang-Ho LEE, Hee-Joo KO, Se-Jin CHO, Hyung-Jun SONG, Jin-Young YUN, Bo-Ra LEE, Young-Woo SONG
  • Patent number: 8847210
    Abstract: An organic light emitting diode (OLED) display includes: a substrate; a first electrode on the substrate; a first emission layer on the first electrode; a second emission layer on the first emission layer; a second electrode on the second emission layer; and a light emitting assistance layer selectively positioned between the first emission layer and the second emission layer.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: September 30, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee-Joo Ko, Se-Jin Cho, Chang-Ho Lee, Il-Soo Oh, Hyung-Jun Song, Jin-Young Yun, Bo-Ra Lee, Young-Woo Song, Jong-Hyuk Lee, Sung-Chul Kim
  • Patent number: 8803133
    Abstract: An organic light emitting diode device includes a first electrode, a second electrode, and an emission layer disposed between the first and second electrodes. The first electrode includes a first layer and a second layer. The first layer includes ytterbium (Yb), samarium (Sm), lanthanum (La), yttrium (Y), calcium (Ca), strontium (Sr), cesium (Cs), ruthenium (Ru), barium (Ba), or a combination thereof and having a thickness ranging from about 40 to 200 ?. The second layer includes silver (Ag), aluminum (Al), copper (Cu), chromium (Cr), or a combination thereof and having a thickness ranging from about 100 to 250 ?.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: August 12, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Tak Kim, Won-Jong Kim, Ji-Young Choung, Joon-Gu Lee, Jin-Baek Choi, Kyu-Hwan Hwang, Il-Soo Oh, Jong-Hyuk Lee
  • 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
  • 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
  • Publication number: 20140117327
    Abstract: An organic compound represented by Formula 1 below and an organic light-emitting device including the organic compound; Wherein Ar1, Ar2, Ar3, Ar4, a, b, and c are defined as in the specification.
    Type: Application
    Filed: July 17, 2013
    Publication date: May 1, 2014
    Inventors: Jin-O Lim, Seok-Hwan Hwang, Young-Kook Kim, Hye-Jin Jung, Sang-Hyun Han, Soo-Yon Kim, Eun-Jae Jeong, Jun-Ha Park, Eun-Young Lee, Il-Soo Oh, Jong-Hyuk Lee