Patents by Inventor Ji-Hwan Yoon

Ji-Hwan Yoon 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: 9577205
    Abstract: An organic light-emitting device including a first light-emitting region, a second light-emitting region, and a third light-emitting region. The organic light-emitting device includes a substrate; a first electrode layer on the substrate; a hole injection layer on the first electrode layer; a common emission layer on the hole injection layer; a first resonance assistance layer on the common emission layer in the first light-emitting region and a second resonance assistance layer on the common emission layer in the second light-emitting region.
    Type: Grant
    Filed: September 14, 2013
    Date of Patent: February 21, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byeong-Wook Yoo, Sang-Woo Pyo, Ha-Jin Song, Hyo-Yeon Kim, Hye-Yeon Shim, Ji-Young Kwon, Heun-Seung Lee, Ji-Hwan Yoon
  • Publication number: 20170012234
    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: Application
    Filed: September 23, 2016
    Publication date: January 12, 2017
    Inventors: Nam Su Kang, Ji Hye Shim, Ji Hwan Yoon, Chang Ho Lee, Hyun Ju Choi
  • Patent number: 9508946
    Abstract: An organic light emitting diode display includes: a substrate; a thin film transistor provided on the substrate; a first electrode connected to the thin film transistor; an organic emission layer provided on the first electrode; an interlayer provided on the organic emission layer; an electron auxiliary layer provided on the interlayer and including an electron injection layer (EIL) and an electron transport layer (ETL); and a second electrode provided on the electron auxiliary layer, wherein the interlayer is made by mixing a material of the electron auxiliary layer.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: November 29, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ha-Jin Song, Sang-Woo Pyo, Byeong-Wook Yoo, Ji-Young Kwon, Bum-Suk Lee, Ji-Myoung Ye, Ji-Hwan Yoon
  • 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
  • Patent number: 9472767
    Abstract: An organic light-emitting device and a method of manufacturing the same. The organic light-emitting device includes a substrate, a first electrode formed on the substrate, a second electrode, an emission layer between the first electrode and the second electrode, a hole transport layer between the first electrode and the emission layer, and an electron transport layer between the second electrode and the emission layer. The hole transport layer includes a first hole transport unit comprising: a first hole transport layer comprising a hole transporting material, a third hole transport layer formed on the first hole transport layer and comprising a charge generating material; and a fifth hole transport layer formed on the third hole transport layer and comprising the hole transporting material.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: October 18, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ja-Hyun Im, Ji-Hwan Yoon, Byung-Hoon Chun, Bum-Suk Kim
  • 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
  • Patent number: 9391121
    Abstract: An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes red, green, and blue pixels. Each pixel includes a pixel electrode, a hole auxiliary layer formed over the pixel electrode, and an organic emission layer formed over the hole auxiliary layer. Each pixel also includes an electron auxiliary layer formed over the organic emission layer, and a common electrode formed over the electron auxiliary layer. Each of the red and green pixels further includes a host layer formed between the hole auxiliary layer and the organic emission layer and a resonance layer formed between the host layer and the organic emission layer.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: July 12, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Bum Suk Lee, Ha Jin Song, Ji Hwan Yoon, Ji Young Kwon, Byeong Wook Yoo, Ji Myoung Ye
  • 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: 9362516
    Abstract: An organic light emitting device including a plurality of organic layers between a first electrode and an emitting layer, wherein the organic layer includes an electron blocking layer. In one embodiment, a first organic layer, an electron blocking layer, a second organic layer and an emitting layer are formed on the first electrode. The electron blocking layer has a Lowest Unoccupied Molecular Orbital (LUMO) level which is lower than that of the first organic layer. Thus, the electron blocking layer traps excess electrons injected from the emitting layer, thereby improving lifetime characteristics of the OLED.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: June 7, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Hwan Yoon, Kwan-Hee Lee, Sung-Jun Bae
  • 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: 9312309
    Abstract: An organic light emitting diode display includes a p-doped layer that can obtain high efficiency at low-voltage driving and low current and prevent leakage current by differentially forming the p-doped layer for each pixel.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: April 12, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ja-Hyun Im, Jung-Min Moon, Tae-Kwang Sung, Ji-Hwan Yoon, Byung-Hoon Chun
  • Patent number: 9299749
    Abstract: An organic light-emitting display apparatus includes a display substrate, a display panel on the display substrate and including a pixel region including an organic light-emitting device (OLED), and a non-pixel region, and an encapsulation substrate for encapsulating the display panel, wherein the encapsulation substrate defines at least one groove therein in which a color filer is located.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: March 29, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyul Han, Hyo-Yeon Kim, Hye-Yeon Shim, Sang-Woo Lee, Heun-Seung Lee, Sang-Woo Pyo, Ji-Hwan Yoon, Gyeong-Hui Hwang
  • Patent number: 9293732
    Abstract: An organic light emitting display device includes a first electrode, a second electrode facing the first electrode, an organic light emitting layer disposed between the first and second electrodes, a first auxiliary structure and a second auxiliary structure both of which are disposed between the first and second electrodes. The first electrode is disposed on a substrate having a first sub-pixel region, a second sub-pixel region and a third sub-pixel region. The organic light emitting layer includes a first organic light emitting layer, a second organic light emitting layer and a third organic light emitting layer. The first auxiliary structure includes a first doping pattern, a first resonance auxiliary pattern, a second doping pattern and a second resonance auxiliary pattern. The second auxiliary structure includes a third doping pattern, a third resonance auxiliary pattern, a fourth doping pattern and a fourth resonance auxiliary pattern.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: March 22, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Woo Pyo, Ji-Hwan Yoon, Ha-Jin Song, Byeong-Wook Yoo, Hyo-Yeon 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
  • Publication number: 20160049613
    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: Application
    Filed: March 16, 2015
    Publication date: February 18, 2016
    Inventors: Nam Su Kang, Ji Hye Shim, Ji Hwan Yoon, Chang Ho Lee, Hyun Ju Choi
  • Patent number: 9224966
    Abstract: An organic light-emitting device including: a substrate; a first electrode; a second electrode; an emission layer between the first electrode and the second electrode; and an electron transport layer between the emission layer and the second electrode, wherein the emission layer includes a blue emission layer, the electron transport layer includes a unit that includes a first single layer including a first material, a first mixed layer on the first single layer and including the first material and a second material, a second single layer on the first mixed layer and including the second material, a second mixed layer on the second single layer and including the first and second materials, and a third single layer on the second mixed layer and including the first material, wherein the first mixed layer has a thickness that is larger than that of the second mixed layer.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: December 29, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joong-Won Sim, Kwan-Hee Lee, Ji-Hwan Yoon, Ja-Hyun Im
  • Patent number: 9224970
    Abstract: An organic light emitting diode includes a first electrode layer, a first common layer disposed on the first electrode layer, an organic light emitting layer disposed on the first common layer, a second common layer disposed on the organic light emitting layer, and a second electrode layer disposed on the second common layer. The organic light emitting layer and the first common layer have the same directional property. Since an injection/transportation of charge at an interface of the first common layer and the organic light emitting layer becomes smooth, charges are not accumulated at the interface. Thus, life of the organic light emitting diode is extended.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: December 29, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Hwan Yoon, Il Soo Oh
  • Patent number: 9190624
    Abstract: An OLED display having a first pixel, a second pixel, and a third pixel which neighbor each other, includes: a plurality of first electrodes provided respectively corresponding to the first pixel, the second pixel, and the third pixel and being separated from each other; a hole injection layer provided on the plurality of first electrodes; a main emission layer including a first emission layer disposed on the hole injection layer corresponding to the first pixel, a second emission layer disposed on the hole injection layer corresponding to the second pixel, and a third emission layer disposed on the hole injection layer corresponding to the third pixel; a p-type hole transport layer disposed between the second emission layer and the hole injection layer and p-type doped; and a second electrode disposed on the main emission layer.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: November 17, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joong -Won Sim, Ji-Hwan Yoon, Chang-Ho Lee
  • Patent number: 9165981
    Abstract: An organic light emitting display includes a substrate; a first pixel electrode disposed on the substrate; a second pixel electrode disposed on the substrate; a hole auxiliary layer disposed on the first pixel electrode and the second pixel electrode; a first organic emission layer disposed on the hole auxiliary layer in correspondence with the first pixel electrode and the second pixel electrode; a blue organic emission layer disposed on the hole auxiliary layer in correspondence with the first pixel electrode and the second pixel electrode, the blue organic emission layer being further disposed on the first organic emission layer; a non-doping blue organic emission layer disposed on the blue organic emission layer; an electron auxiliary layer disposed on the non-doping blue organic emission layer; and a common electrode disposed on the electron auxiliary layer.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: October 20, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Hoon Seo, Kwan-Hee Lee, Ji-Hwan Yoon, Byung-Hoon Chun, Ja-Hyun Im
  • Patent number: 9165980
    Abstract: An organic light emitting diode (OLED) and a method of manufacturing the same. An auxiliary layer comprising a high density metallic compound and an emission layer are formed by a laser induced thermal imaging (LITI) process. The LITI process reduces manufacturing costs and time by eliminating the need for a mask patterning process. The metallic compound has a density of 2 g/cm3 or greater to promote adhesion and improve interfacial planarization. This results in improved luminance uniformity (i.e. luminance mura) between pixels within an OLED display device.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: October 20, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyul Han, Sang-Woo Lee, Hyo-Yeon Kim, Hye-Yeon Shim, Heun-Seung Lee, Sang-Woo Pyo, Ji-Hwan Yoon