Patents by Inventor Joon-bae Lee

Joon-bae 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).

  • Publication number: 20250066275
    Abstract: The present invention relates to an anthracene derivative compound having a characteristic structure in which an aryl group is introduced into a skeletal structure in which deuterium-substituted phenyl and anthracene are linked. In addition, the present invention relates to a high-efficiency, long-life organic light-emitting device of which the luminous efficiency and lifetime characteristics are significantly improved by employing a polycyclic compound having a characteristic structure as a dopant for a light-emitting layer while employing said compound as a host for the light-emitting layer.
    Type: Application
    Filed: December 14, 2022
    Publication date: February 27, 2025
    Applicant: SFC CO., LTD.
    Inventors: Se-jin LEE, Si-In KIM, Seok-bae PARK, Hee-dae KIM, Yeong-tae CHOI, Kyung-tae KIM, Ji-yung KIM, Seung-soo LEE, Kyeong-hyeon KIM, Tae-gyun LEE, Joon-ho KIM
  • Publication number: 20250063948
    Abstract: The present invention relates to an organic light-emitting diode in which a light-emitting layer comprises a compound represented by [chemical formula A] as a host and comprises a compound represented by [chemical formula 3], [chemical formula 4], [chemical formula 3-1] to [chemical formula 4-3] as a dopant, wherein [chemical formula 3], [chemical formula 4], [chemical formula 3-1] to [chemical formula 4-3] are the same as those described in the detailed description of the invention.
    Type: Application
    Filed: November 25, 2022
    Publication date: February 20, 2025
    Inventors: Kyung-Tae KIM, Se-Jin LEE, Si-In KIM, Seok-Bae PARK, Hee-Dae KIM, Yeong-Tae CHOI, Ji-Yung KIM, Seung-Soo LEE, Kyeong-Hyeon KIM, Tae-Gyun LEE, Joon-Ho KIM
  • Patent number: 11644414
    Abstract: The present disclosure relates to a ferrocene-based compound having high selectivity for sulfide ion. The ferrocene-based compound is obtained by reacting a ferrocene starting material with one or more organic compound selected from a nitrile, a methyl ester and an ethyl ester, and a chemical sensor in solution state is prepared by mixing the compound with an organic solvent. The chemical sensor according to the present disclosure has high selectivity and sensitivity for sulfide ion even at low concentration and may be used as a chemical sensor for detecting hydrogen sulfide in solution state by allowing visual inspection of sulfide ion.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: May 9, 2023
    Assignee: REPUBLIC OF KOREA (NATIONAL FORENSIC SERVICE DIRECTOR MINISTRY OF INTERIOR AND SAFETY)
    Inventors: Dae-Jun Ahn, Mia Kwon, Jisook Min, Joon-Bae Lee, Dong-Kye Lee, Byeong-Yeol Song
  • Publication number: 20210333199
    Abstract: The present disclosure relates to a ferrocene-based compound having high selectivity for sulfide ion. The ferrocene-based compound is obtained by reacting a ferrocene starting material with one or more organic compound selected from a nitrile, a methyl ester and an ethyl ester, and a chemical sensor in solution state is prepared by mixing the compound with an organic solvent. The chemical sensor according to the present disclosure has high selectivity and sensitivity for sulfide ion even at low concentration and may be used as a chemical sensor for detecting hydrogen sulfide in solution state by allowing visual inspection of sulfide ion.
    Type: Application
    Filed: March 2, 2021
    Publication date: October 28, 2021
    Applicant: REPUBLIC OF KOREA(NATIONAL FORENSIC SERVICE DIRECTOR MINISTRY OF INTERIOR AND
    Inventors: Dae-Jun AHN, Mia Kwon, Jisook Min, Joon-Bae Lee, Dong-Kye Lee, Byeong-Yeol Song
  • Patent number: 6815887
    Abstract: An organic electroluminescent display (EL) device including a transparent substrate, a first electrode unit formed on the transparent substrate in a predetermined pattern and made of a transparent conductive material, an organic EL unit including organic layers having a predetermined pattern, stacked on the first electrode unit, a second electrode unit corresponding to the first electrode unit, formed on the organic EL unit in a predetermined pattern, and an encapsulation layer to encapsulate the first electrode unit, the organic EL unit and the second electrode unit to protect the same, the encapsulation layer including a first component and a second component made of one or more metals selected from the group consisting of iron (Fe), cobalt (Co), vanadium (V), titanium (Ti), aluminium (Al), silver (Ag) and platinum (Pt).
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: November 9, 2004
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Joon-bae Lee, Chang-won Park, Jin-woo Park, Dong-chan Shin
  • Patent number: 6674237
    Abstract: A plate for a plasma display panel includes a plate member formed of a transparent material, a series of electrodes formed in a predetermined pattern on the plate member, and a dielectric layer formed on the plate member to cover the electrodes, wherein the electrodes are formed of a dielectric first component, and a metallic second component of at least one metal selected from a group consisting of iron (Fe), cobalt (Co), vanadium (V), titanium (Ti), aluminum (Al), silver (Ag), silicon (Si), germanium (Ge), yttrium (Y), zinc (Zn), zirconium (Zr), tungsten (W), tantalum (Ta), copper (Cu), and platinum (Pt).
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: January 6, 2004
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Young-rag Do, Chang-won Park, Joon-bae Lee, Chaun-gi Choi
  • Patent number: 6627322
    Abstract: A functional film includes a transition layer having a first constituent and a second constituent having gradual content gradients according to a thickness of the functional film. The first constituent is at least one dielectric material selected from the group consisting of SiOx (x>1), MgF2, CaF2, Al2O3, SnO2, In2O3 and ITO, and the second constituent is at least one material selected from the group consisting of iron (Fe), cobalt (Co), titanium (Ti), vanadium (V), aluminum (Al), silver (Ag), silicon (Si), germanium (Ge), yttrium (Y), zinc (Zn), zirconium (Zr), tungsten (W) and tantalum (Ta).
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: September 30, 2003
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chaun-gi Choi, Young-rag Do, Joon-bae Lee, Chang-won Park
  • Patent number: 6623862
    Abstract: A functional film including a transition layer including a first constituent selected from aluminum and silicon and at least one second constituent selected from oxygen and nitrogen, the first and second constituents having gradual content gradients according to a thickness of the functional film.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: September 23, 2003
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chaun-gi Choi, Young-rag Do, Joon-bae Lee, Chang-won Park
  • Publication number: 20030117071
    Abstract: An organic electroluminescent display (EL) device including a transparent substrate, a first electrode unit formed on the transparent substrate in a predetermined pattern and made of a transparent conductive material, an organic EL unit including organic layers having a predetermined pattern, stacked on the first electrode unit, a second electrode unit corresponding to the first electrode unit, formed on the organic EL unit in a predetermined pattern, and an encapsulation layer to encapsulate the first electrode unit, the organic EL unit and the second electrode unit to protect the same, the encapsulation layer including a first component and a second component made of one or more metals selected from the group consisting of iron (Fe), cobalt (Co), vanadium (V), titanium (Ti), aluminium (Al), silver (Ag) and platinum (Pt).
    Type: Application
    Filed: March 18, 2002
    Publication date: June 26, 2003
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Joon Bae Lee, Chang-Won Park, Jin-Woo Park, Dong-Chan Shin
  • Patent number: 6579624
    Abstract: A functional film includes a transition layer having a first constituent having SiO as a dielectric material and at least one second constituent selected from aluminum (Al), silver (Ag), silicon (Si), germanium (Ge), yttrium (Y), zinc (Zn), zirconium (Zr), tungsten (W) and tantalum (Ta). The first and second constituents have corresponding gradual content gradients according to a thickness of the functional film.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: June 17, 2003
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chaun-gi Choi, Young-rag Do, Joon-bae Lee, Chang-won Park
  • Publication number: 20020190652
    Abstract: A plate for a plasma display panel includes a plate member formed of a transparent material, a series of electrodes formed in a predetermined pattern on the plate member, and a dielectric layer formed on the plate member to cover the electrodes, wherein the electrodes are formed of a dielectric first component, and a metallic second component of at least one metal selected from a group consisting of iron (Fe), cobalt (Co), vanadium (V), titanium (Ti), aluminum (Al), silver (Ag), silicon (Si), germanium (Ge), yttrium (Y), zinc (Zn), zirconium (Zr), tungsten (W), tantalum (Ta), copper (Cu), and platinum (Pt).
    Type: Application
    Filed: September 10, 2001
    Publication date: December 19, 2002
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Young-Rag Do, Chang-Won Park, Joon-Bae Lee, Chaun-Gi Choi
  • Publication number: 20020187354
    Abstract: A functional film including a transition layer including a first constituent selected from aluminum and silicon and at least one second constituent selected from oxygen and nitrogen, the first and second constituents having gradual content gradients according to a thickness of the functional film.
    Type: Application
    Filed: November 28, 2001
    Publication date: December 12, 2002
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Chaun-Gi Choi, Young-Rag Do, Joon-Bae Lee, Chang-Won Park
  • Publication number: 20020160218
    Abstract: A functional film includes a transition layer having a first constituent having SiO as a dielectric material and at least one second constituent selected from aluminum (Al), silver (Ag), silicon (Si), germanium (Ge), yttrium (Y), zinc (Zn), zirconium (Zr), tungsten (W) and tantalum (Ta). The first and second constituents have corresponding gradual content gradients according to a thickness of the functional film.
    Type: Application
    Filed: November 28, 2001
    Publication date: October 31, 2002
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Chaun-gi Choi, Young-rag Do, Joon-bae Lee, Chang-won Park
  • Publication number: 20020146570
    Abstract: A functional film includes a transition layer having a first constituent and a second constituent having gradual content gradients according to a thickness of the functional film. The first constituent is at least one dielectric material selected from the group consisting of SiOx (x>1), MgF2, CaF2, Al2O3, SnO2, In2O3 and ITO, and the second constituent is at least one material selected from the group consisting of iron (Fe), cobalt (Co), titanium (Ti), vanadium (V), aluminium (Al), silver (Ag), silicon (Si), germanium (Ge), yttrium (Y), zinc (Zn), zirconium (Zr), tungsten (W) and tantalum (Ta).
    Type: Application
    Filed: November 28, 2001
    Publication date: October 10, 2002
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Chaun-gi Choi, Young-rag Do, Joon-bae Lee, Chang-won Park
  • Patent number: 6447983
    Abstract: A photolithography method includes applying to a substrate a coating of a film forming composition containing a bonding resin and a film forming material and drying to form a film; selectively coating the film with a photosensitive composition including a photosensitizer to form a film pattern; exposing the film with the film pattern; and developing the film. Therefore, a film in a pattern and having excellent characteristics can be manufactured easily and efficiently. The photolithography method can be applied to any product which requires the formation of a film in a pattern.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: September 10, 2002
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Yong Han, Young-rag Do, Joon-bae Lee
  • Patent number: 6387576
    Abstract: A black matrix, a preparation method thereof and a display device employing the black matrix. The black matrix which is a black coating layer surrounding pixels of the display device, includes SiO which is a dielectric material and at least one metal selected from the group consisting of iron (Fe), cobalt (Co), vanadium (V) and titanium (Ti). The black matrix has excellent thermal and chemical stability and is environmentally desirous by using a mixture of a nontoxic metal and a dielectric material. Also, the black matrix exhibits excellent adhesion to a substrate without an annealing process, is excellent in mechanical characteristic due to the absence of internal stress and is capable of being micro-patterned to have a particle size of 1 &mgr;m or less. When applied to the substrate of the display device, the black matrix exhibits excellent external light absorbing effect. Therefore, a display device having improved luminance and contrast characteristics can be attained.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: May 14, 2002
    Assignees: Samsung SDI Co., Ltd., Ivan Z. Indutnyy, Petro E. Shepelizvyi, Kateryna V. Michailoyskaya
    Inventors: Ivan Indutnyy Z., Petro Shepeliavyi E., Kateryna Michailovskaya V., Chang-won Park, Joon-bae Lee, Yong Han
  • Publication number: 20010030721
    Abstract: A black matrix, a preparation method thereof and a display device employing the black matrix. The black matrix which is a black coating layer surrounding pixels of the display device, includes SiO which is a dielectric material and at least one metal selected from the group consisting of iron (Fe), cobalt (Co), vanadium (V) and titanium (Ti). The black matrix has excellent thermal and chemical stability and is environmentally desirous by using a mixture of a nontoxic metal and a dielectric material. Also, the black matrix exhibits excellent adhesion to a substrate without an annealing process, is excellent in mechanical characteristic due to the absence of internal stress and is capable of being micro-patterned to have a particle size of 1 &mgr;m or less. When applied to the substrate of the display device, the black matrix exhibits excellent external light absorbing effect. Therefore, a display device having improved luminance and contrast characteristics can be attained.
    Type: Application
    Filed: December 21, 2000
    Publication date: October 18, 2001
    Inventors: Ivan Indutnyy Z., Petro Shepeliavyi E., Kateryna Michailovskaya V., Chang-won Park, Joon-bae Lee, Yong Han
  • Patent number: 5998918
    Abstract: A method of manufacturing a phosphor screen for a flickerless cathode ray tube comprising the steps of forming red and green phosphor layers on a panel for a cathode ray tube on which a black matrix is formed, forming a blue phosphor layer on said panel on which a black matrix is formed by coating the blue phosphor slurry and drying and forming a double phosphor layer by coating an ultraviolet phosphor slurry on said blue phosphor layer and drying, is provided.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: December 7, 1999
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Young-rag Do, Chang-won Park, Joon-bae Lee, Won-ho Yoon
  • Patent number: 5958296
    Abstract: An improved red, green or blue phosphor complex produced by adhering chromium compound on the red, green or blue phosphor using a polymer binder or an inorganic binder, or without a binder, has high brightness without changing the characteristics of the phosphor
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: September 28, 1999
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Young-rag Do, Joon-bae Lee, Chang-won Park, Mi-ran Song
  • Patent number: 5957560
    Abstract: Disclosed is a ferroelectric liquid crystal display projector employing a fluorescent screen, including a light source emitting light of a predetermined wavelength; a first condensing lens for converting the light radiated from the light source into beams; a polarizing beam splitter for selecting a predetermined directional light in the incident light passing through the first condensing lens and for polarizing the light; a ferroelectric liquid crystal shutter on/off operated according to the polarizing operation of the polarizing beam splitter, the ferroelectric liquid crystal shutter comprising a reflecting layer attached on a backside and RAM devices attached on each pixel of a ferroelectric liquid crystal (FLC); an optical system for magnifying, at a predetermined ratio, the light reflected from the ferroelectric liquid crystal shutter; and a fluorescent screen of a fluorescent material which radiates by light, passing through the optical system, at a predetermined wavelength.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: September 28, 1999
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Young-rag Do, Chang-won Park, Jang-ho Kim, Jae-woo Bae, Joon-bae Lee