Patents by Inventor Yu-Sung Cho

Yu-Sung 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: 11937472
    Abstract: An manufacturing method of a display device may include the following steps: forming a transistor on a substrate; forming an insulating layer on the transistor; forming a conductive layer including silver on the insulating layer; forming a photosensitive member on the conductive layer; forming an electrode of a light-emitting element by etching the conductive layer; performing plasma treatment on a structure that comprises the electrode, the plasma treatment using a gas including a halogen; and removing a product that is resulted from the plasma treatment.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: March 19, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Gab Kim, Hyun Min Cho, Tae Sung Kim, Yu-Gwang Jeong, Su Bin Bae, Jin Seock Kim, Sang Gyun Kim, Hyo Min Ko, Kil Won Cho, Hansol Lee
  • Patent number: 8670300
    Abstract: A network device relating to a digital subscriber line (DSL) such as an asymmetrical DSL (ADSL) or a very high bit rate DSL (VDSL) is provided. In the present invention, the capacitors equipped into the network device are separated and grouped into two independent groups. When the network device runs out of power, the energy of one of the two independent groups is provided for generating the dying gasp signal, and the energy of the other of the two independent groups is provided for amplifying and transmitting the dying gasp signal to a Central Office (CO). Accordingly, the CO can be accurately known whether the network device runs out of power or not, and the respective capacitances of the two independent groups can be significantly reduced so as to reduce the cost of the network device.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: March 11, 2014
    Assignee: Gemtek Technology Co., Ltd.
    Inventors: Yu-Sung Cho, Yung-Chang Lin
  • Patent number: 8334168
    Abstract: An organic light emitting display device and a method of fabricating the same are provided. The organic light emitting display device includes a substrate, a first electrode formed on the substrate, an inorganic pixel defining layer formed on the first electrode and having an opening exposing at least a portion of the first electrode, an organic layer disposed on the first electrode and having at least an organic emission layer, and a second electrode formed on the organic layer.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: December 18, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yu-Sung Cho, Ho-Jin Kang, Myung-Ho Oh
  • Publication number: 20120287976
    Abstract: A network device relating to a digital subscriber line (DSL) such as an asymmetrical DSL (ADSL) or a very high bit rate DSL (VDSL) is provided. In the present invention, the capacitors equipped into the network device are separated and grouped into two independent groups. When the network device runs out of power, the energy of one of the two independent groups is provided for generating the dying gasp signal, and the energy of the other of the two independent groups is provided for amplifying and transmitting the dying gasp signal to a Central Office (CO). Accordingly, the CO can be accurately known whether the network device runs out of power or not, and the respective capacitances of the two independent groups can be significantly reduced so as to reduce the cost of the network device.
    Type: Application
    Filed: May 13, 2011
    Publication date: November 15, 2012
    Applicant: GEMTEK TECHNOLOGY CO., LTD.
    Inventors: Yu-Sung Cho, Yung-Chang Lin
  • Patent number: 8278818
    Abstract: An electroluminescent (EL) display device and a method of fabricating the same are provided. The device includes a substrate; a plurality of pixel electrodes disposed on the substrate; a pixel defining layer disposed on the pixel electrodes and having an opening part exposing a predetermined part of each of the pixel electrodes; and at least one barrier layer comprised in and/or on the pixel defining layer. In this device, the pixel defining layer includes at least one barrier layer in order to reduce the amount of outgas from the pixel defining layer and prevent degradation of an emission portion due to the outgas. Also, the pixel defining layer is formed to a sufficiently small thickness to facilitate a subsequent process using a laser induced thermal imaging (LITI) process.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: October 2, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Chang-Yong Jeong, Tae-Wook Kang, Chang-Soo Kim, Yu-Sung Cho
  • Patent number: 7936125
    Abstract: A flat panel display capable of reducing element defects by decreasing taper angles of contact holes and a via hole. The flat panel display includes a thin film transistor having at least source and drain electrodes formed over an insulating substrate, an insulating layer having a via hole for exposing one of the source and drain electrodes, and an anode connected to said one of the source and drain electrodes through the via hole. The via hole and the anode are tapered with taper angles of 60° or less. The source and drain electrodes are connected respectively to source and drain regions of the thin film transistor through the contact holes. The contact holes are also tapered with taper angles of 60° or less.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: May 3, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Mu-Hyun Kim, Myung-Won Song, Yu-Sung Cho
  • Publication number: 20110065234
    Abstract: An organic light emitting display device and a method of fabricating the same are provided. The organic light emitting display device includes a substrate, a first electrode formed on the substrate, an inorganic pixel defining layer formed on the first electrode and having an opening exposing at least a portion of the first electrode, an organic layer disposed on the first electrode and having at least an organic emission layer, and a second electrode formed on the organic layer.
    Type: Application
    Filed: October 4, 2010
    Publication date: March 17, 2011
    Applicant: SAMSUNG MOBILE DISPLAY CO., LTD.
    Inventors: YU-SUNG CHO, HO-JIN KANG, MYUNG-HO OH
  • Patent number: 7829890
    Abstract: An organic light emitting display device and a method of fabricating the same are provided. The organic light emitting display device includes a substrate, a first electrode formed on the substrate, an inorganic pixel defining layer formed on the first electrode and having an opening exposing at least a portion of the first electrode, an organic layer disposed on the first electrode and having at least an organic emission layer, and a second electrode formed on the organic layer.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: November 9, 2010
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Yu-Sung Cho, Ho-Jin Kang, Myung-Ho Oh
  • Patent number: 7656087
    Abstract: A flat panel display capable of reducing element defects by decreasing taper angles of contact holes and a via hole. The flat panel display includes a thin film transistor having at least source and drain electrodes formed over an insulating substrate, an insulating layer having a via hole for exposing one of the source and drain electrodes, and an anode connected to said one of the source and drain electrodes through the via hole. The via hole and the anode are tapered with taper angles of 60° or less. The source and drain electrodes are connected respectively to source and drain regions of the thin film transistor through the contact holes. The contact holes are also tapered with taper angles of 60° or less.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: February 2, 2010
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Mu-Hyun Kim, Myung-Won Song, Yu-Sung Cho
  • Patent number: 7592624
    Abstract: An organic light emitting display and method of fabricating the same are provided, such that an organic light emitting display includes a substrate having formed thereon a thin film transistor including a gate electrode, a source electrode, and a drain electrode, a passivation layer formed on the substrate having a contact hole exposing the source or the drain electrode, a first insulating layer pattern formed on a portion of the passivation layer corresponding to an emission region and having a step portion that is higher than the passivation layer on the thin film transistor, a pixel electrode formed on a portion of the passivation layer and on a portion of the first insulating layer pattern that contacts the source or the drain electrode through the contact hole, and a second insulating layer pattern formed on portions of the passivation layer and the pixel electrode that defines the emission region.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: September 22, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Tae-Wook Kang, Yu-Sung Cho, Sang-Won Lee
  • Publication number: 20090072729
    Abstract: A flat panel display capable of reducing element defects by decreasing taper angles of contact holes and a via hole. The flat panel display includes a thin film transistor having at least source and drain electrodes formed over an insulating substrate, an insulating layer having a via hole for exposing one of the source and drain electrodes, and an anode connected to said one of the source and drain electrodes through the via hole. The via hole and the anode are tapered with taper angles of 60° or less. The source and drain electrodes are connected respectively to source and drain regions of the thin film transistor through the contact holes. The contact holes are also tapered with taper angles of 60° or less.
    Type: Application
    Filed: September 19, 2008
    Publication date: March 19, 2009
    Inventors: Mu-Hyun Kim, Myung-Won Song, Yu-Sung Cho
  • Patent number: 7501756
    Abstract: An organic light emitting display which is constructed with a TFT substrate having an insulating substrate and a TFT that has at least a source electrode and a drain electrode, a lower electrode formed on the TFT substrate and connected to one of source/drain electrodes, an insulating layer having an opening that exposes a portion of the lower electrode, an organic thin film layer formed on the exposed portion of the lower electrode and the insulating layer, and an upper electrode formed on the organic thin film layer, wherein the insulating layer has a taper angle less than 40° at an edge of the opening, and a step less than or equal to 3,000 ? is formed between the lower electrode and the organic thin film layer. The organic light emitting display can prevent device failure.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: March 10, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Mu-Hyun Kim, Myung-Won Song, Tae-Min Kang, Seong-Taek Lee, Yu-Sung Cho
  • Publication number: 20060060865
    Abstract: An organic light emitting display device and a method of fabricating the same are provided. The organic light emitting display device includes a substrate, a first electrode formed on the substrate, an inorganic pixel defining layer formed on the first electrode and having an opening exposing at least a portion of the first electrode, an organic layer disposed on the first electrode and having at least an organic emission layer, and a second electrode formed on the organic layer.
    Type: Application
    Filed: August 24, 2005
    Publication date: March 23, 2006
    Inventors: Yu-Sung Cho, Ho-Jin Kang, Myung-Ho Oh
  • Publication number: 20060022587
    Abstract: An electroluminescent (EL) display device and a method of fabricating the same are provided. The device includes a substrate; a plurality of pixel electrodes disposed on the substrate; a pixel defining layer disposed on the pixel electrodes and having an opening part exposing a predetermined part of each of the pixel electrodes; and at least one barrier layer comprised in and/or on the pixel defining layer. In this device, the pixel defining layer includes at least one barrier layer in order to reduce the amount of outgas from the pixel defining layer and prevent degradation of an emission portion due to the outgas. Also, the pixel defining layer is formed to a sufficiently small thickness to facilitate a subsequent process using a laser induced thermal imaging (LITI) process.
    Type: Application
    Filed: June 3, 2005
    Publication date: February 2, 2006
    Inventors: Chang-Yong Jeong, Tae-Wook Kang, Chang-Soo Kim, Yu-Sung Cho
  • Publication number: 20050263755
    Abstract: An organic light emitting display and method of fabricating the same are provided, such that an organic light emitting display includes a substrate having formed thereon a thin film transistor including a gate electrode, a source electrode, and a drain electrode, a passivation layer formed on the substrate having a contact hole exposing the source or the drain electrode, a first insulating layer pattern formed on a portion of the passivation layer corresponding to an emission region and having a step portion that is higher than the passivation layer on the thin film transistor, a pixel electrode formed on a portion of the passivation layer and on a portion of the first insulating layer pattern that contacts the source or the drain electrode through the contact hole, and a second insulating layer pattern formed on portions of the passivation layer and the pixel electrode that defines the emission region.
    Type: Application
    Filed: May 5, 2005
    Publication date: December 1, 2005
    Inventors: Tae-Wook Kang, Yu-Sung Cho, Sang-Won Lee
  • Publication number: 20050253171
    Abstract: An organic light emitting display (OLED) and method of fabricating the same are provided having a reduced number of photolithography and etching steps. The method includes a source electrode and a drain electrode being formed over a substrate, and at least one insulating layer being formed over the source electrode and drain electrode. After the insulation layer is formed, a reflecting layer pattern is formed. A via contact hole is formed through the insulating layer using the reflecting layer pattern as an etching mask. Multiple insulating layers may be formed and have a via contact hole etched therethrough in one etching step using the reflecting layer pattern as a mask. Alternatively, each insulating layer may have a via contact hole separately etched therethrough, with the last layer being etched using the reflective layer pattern as a mask. Consequently, the number of photolithography and etching steps is reduced thereby leading to higher manufacturing yield and lower manufacturing cost.
    Type: Application
    Filed: May 6, 2005
    Publication date: November 17, 2005
    Inventors: Tae-Wook Kang, Seong-Moh Seo, Chang-Su Seo, Yu-Sung Cho, Hyun-Eok Shin, Kwan-Hee Lee
  • Publication number: 20050116630
    Abstract: A flat panel display capable of reducing element defects by decreasing taper angles of contact holes and a via hole. The flat panel display includes a thin film transistor having at least source and drain electrodes formed over an insulating substrate, an insulating layer having a via hole for exposing one of the source and drain electrodes, and an anode connected to said one of the source and drain electrodes through the via hole. The via hole and the anode are tapered with taper angles of 60° or less. The source and drain electrodes are connected respectively to source and drain regions of the thin film transistor through the contact holes. The contact holes are also tapered with taper angles of 60° or less.
    Type: Application
    Filed: September 10, 2004
    Publication date: June 2, 2005
    Inventors: Mu-Hyun Kim, Myung-Won Song, Yu-Sung Cho
  • Publication number: 20050116631
    Abstract: An organic light emitting display which is constructed with a TFT substrate having an insulating substrate and a TFT that has at least a source electrode and a drain electrode, a lower electrode formed on the TFT substrate and connected to one of source/drain electrodes, an insulating layer having an opening that exposes a portion of the lower electrode, an organic thin film layer formed on the exposed portion of the lower electrode and the insulating layer, and an upper electrode formed on the organic thin film layer, wherein the insulating layer has a taper angle less than 40° at an edge of the opening, and a step less than or equal to 3,000 ? is formed between the lower electrode and the organic thin film layer. The organic light emitting display can prevent device failure.
    Type: Application
    Filed: September 21, 2004
    Publication date: June 2, 2005
    Inventors: Mu-Hyung Kim, Myung-Won Song, Tae-Min Kang, Seong-Taek Lee, Yu-Sung Cho