Patents by Inventor Eung-Seok Park
Eung-Seok Park 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).
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Patent number: 11974455Abstract: A display device includes a substrate; a light-emitting element layer on the substrate; a first thin-film encapsulation layer that is on the light-emitting element layer, has an upper surface conforming an upper surface of the light-emitting element layer, and includes a recessed portion; a bank layer on the first thin-film encapsulation layer and having an opening overlapping the recessed portion; a wavelength conversion layer in the opening on the first thin-film encapsulation layer and at least partially in the recessed portion; a first inorganic layer on the bank layer and the wavelength conversion layer; an organic layer on the first inorganic layer; and a second inorganic layer on the organic layer.Type: GrantFiled: September 3, 2021Date of Patent: April 30, 2024Assignee: Samsung Display Co., Ltd.Inventors: Myung Chul Yeo, Yong Tack Kim, Eung Seok Park, Hee Wook Yoon, Yoon Hyeung Cho
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Patent number: 11925051Abstract: A display device includes: a first base having a display area; light-emitting elements on the first base; and an encapsulation layer over the light-emitting elements. The encapsulation layer includes: a first inorganic layer; an organic layer on the first inorganic layer; and a second inorganic layer on the organic layer. The first inorganic layer includes: a first buffer layer on the light-emitting elements; a first barrier layer on the first buffer layer; a first porous layer on the first barrier layer; a second barrier layer on the first porous layer; and a second buffer layer on the second barrier layer. A refractive index of the first buffer layer, the first barrier layer, and the first porous layer are different from one another, and the refractive index of the first porous layer is smaller than the refractive index of the first buffer layer and the first barrier layer.Type: GrantFiled: May 7, 2021Date of Patent: March 5, 2024Assignee: Samsung Display Co., Ltd.Inventors: Yong Tack Kim, Eung Seok Park, Jae Hyuk Lee, Yoon Hyeung Cho, Dong Uk Choi
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Patent number: 11889718Abstract: A display panel including a base layer; a circuit layer; an emission layer including first, second and third emission areas respectively corresponding to first, second and third pixel areas; an organic encapsulation layer having a flat top surface; an inorganic encapsulation layer on the top surface of the organic encapsulation layer and having a first refractive index; a functional layer disposed on the inorganic encapsulation aver and having a second refractive index less than the first refractive index; and a partition wall disposed on the functional layer and including first, second and third openings, wherein the first, second and third openings respectively correspond to the first, second and third pixel areas, wherein a total reflection critical angle between the inorganic encapsulation layer and the functional layer is less than a reference incident angle of reference light traveling from the first emission area toward the partition wall.Type: GrantFiled: April 20, 2021Date of Patent: January 30, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Eung Seok Park, Yongtack Kim, Yoonhyeung Cho, Myungchul Yeo
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Patent number: 11805666Abstract: Provided is a display device including a first substrate including a display part and a non-display part around the display part, a second substrate disposed on the first substrate, a pixel disposed between the display part and the second substrate, a quantum dot layer disposed between the second substrate and the pixel, a bank layer disposed around the quantum dot layer, and when viewed on a plane, overlapping the non-display part, a color filter disposed between the second substrate and the quantum dot layer, a dummy color filter, when viewed on the plane, overlapping the non-display part, and disposed between the bank layer and the second substrate, and a sealant disposed between the non-display part and the bank layer.Type: GrantFiled: March 8, 2021Date of Patent: October 31, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Yohan Kim, Eung Seok Park, Wonmin Yun, Yongtack Kim, Byoungduk Lee, Yoonhyeung Cho
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Publication number: 20220199948Abstract: A display device includes a substrate; a light-emitting element layer on the substrate; a first thin-film encapsulation layer that is on the light-emitting element layer, has an upper surface conforming an upper surface of the light-emitting element layer, and includes a recessed portion; a bank layer on the first thin-film encapsulation layer and having an opening overlapping the recessed portion; a wavelength conversion layer in the opening on the first thin-film encapsulation layer and at least partially in the recessed portion; a first inorganic layer on the bank layer and the wavelength conversion layer; an organic layer on the first inorganic layer; and a second inorganic layer on the organic layer.Type: ApplicationFiled: September 3, 2021Publication date: June 23, 2022Inventors: Myung Chul YEO, Yong Tack KIM, Eung Seok PARK, Hee Wook YOON, Yoon Hyeung CHO
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Patent number: 11362297Abstract: Provided is a display device. The display device includes a light emitting element layer including a plurality of light emitting elements, and a light control layer on the light emitting element layer and overlapping the light emitting element layer on a plane. At least one of the light emitting elements and the light control layer includes an amorphous carbon light emitter.Type: GrantFiled: October 24, 2019Date of Patent: June 14, 2022Assignee: Samsung Display Co., Ltd.Inventors: Yongchan Ju, Yisu Kim, Jongwoo Kim, Eung Seok Park, Wonmin Yun, Jaeheung Ha
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Publication number: 20220158099Abstract: A display apparatus according to an embodiment includes light-emitting devices and an encapsulation member, wherein the encapsulation member includes a light absorber including a hexagonal heterocycle containing two or more nitrogen atoms as ring-forming atoms, and first to third substituents substituted at the hexagonal heterocycle, the first to third substituents being different from one another, and thus can effectively block external light, thereby exhibiting improved reliability.Type: ApplicationFiled: September 27, 2019Publication date: May 19, 2022Inventors: Sanghyun HAN, Jongwoo KIM, Eunjae JEONG, Dongjun KIM, Wonmin YUN, Young Kook KIM, Eung Seok PARK, Yongchan JU, Yisu KIM, Byoungduk LEE, Seokhwan HWANG
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Publication number: 20220059799Abstract: A display device includes: a first base having a display area; light-emitting elements on the first base; and an encapsulation layer over the light-emitting elements. The encapsulation layer includes: a first inorganic layer; an organic layer on the first inorganic layer; and a second inorganic layer on the organic layer. The first inorganic layer includes: a first buffer layer on the light-emitting elements; a first barrier layer on the first buffer layer; a first porous layer on the first barrier layer; a second barrier layer on the first porous layer; and a second buffer layer on the second barrier layer. A refractive index of the first buffer layer, the first barrier layer, and the first porous layer are different from one another, and the refractive index of the first porous layer is smaller than the refractive index of the first buffer layer and the first barrier layer.Type: ApplicationFiled: May 7, 2021Publication date: February 24, 2022Inventors: Yong Tack KIM, Eung Seok PARK, Jae Hyuk LEE, Yoon Hyeung CHO, Dong Uk CHOI
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Publication number: 20220020965Abstract: A display panel including a base layer; a circuit layer; an emission layer including first, second and third emission areas respectively corresponding to first, second and third pixel areas; an organic encapsulation layer having a flat top surface; an inorganic encapsulation layer on the top surface of the organic encapsulation layer and having a first refractive index; a functional layer disposed on the inorganic encapsulation aver and having a second refractive index less than the first refractive index; and a partition wall disposed on the functional layer and including first, second and third openings, wherein the first, second and third openings respectively correspond to the first, second and third pixel areas, wherein a total reflection critical angle between the inorganic encapsulation layer and the functional layer is less than a reference incident angle of reference light traveling from the first emission area toward the partition wall.Type: ApplicationFiled: April 20, 2021Publication date: January 20, 2022Inventors: EUNG SEOK PARK, YONGTACK KIM, YOONHYEUNG CHO, MYUNGCHUL YEO
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Publication number: 20210384461Abstract: Provided is a display device including a first substrate including a display part and a non-display part around the display part, a second substrate disposed on the first substrate, a pixel disposed between the display part and the second substrate, a quantum dot layer disposed between the second substrate and the pixel, a bank layer disposed around the quantum dot layer, and when viewed on a plane, overlapping the non-display part, a color filter disposed between the second substrate and the quantum dot layer, a dummy color filter, when viewed on the plane, overlapping the non-display part, and disposed between the bank layer and the second substrate, and a sealant disposed between the non-display part and the bank layer.Type: ApplicationFiled: March 8, 2021Publication date: December 9, 2021Inventors: YOHAN KIM, EUNG SEOK PARK, WONMIN YUN, YONGTACK KIM, BYOUNGDUK LEE, YOONHYEUNG CHO
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Publication number: 20210376291Abstract: A display device includes a first base on which a display area and a non-display area are defined; a first support member disposed on the first base and located in the non-display area; a light emitting element disposed on the first base and located in the display area; an encapsulation layer which disposed on the light emitting element; a second base disposed on the encapsulation layer; a color filter disposed between the second base and the encapsulation layer, where the color filter overlaps the light emitting element; a wavelength conversion pattern disposed on the color filter; and a sealing member disposed between the first base and the second base and located in the non-display area, where the sealing member is located between the display area and the first support member and overlaps the encapsulation layer.Type: ApplicationFiled: March 16, 2021Publication date: December 2, 2021Inventors: Cheol Eon PARK, Eung Seok PARK, Yong Tack KIM
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Patent number: 10985218Abstract: A display device includes a first substrate in which a first pixel region and a second pixel region are defined, a second substrate including a first display element and a second display element, a first layer having a first refractive index, and a second layer having a second refractive index. The first substrate includes a first wavelength conversion layer disposed in the first pixel region and a second wavelength conversion layer disposed in the second pixel region. A total reflection critical angle between the first layer and the second layer is smaller than an incident angle of light which is emitted from the first display element and is incident into the second wavelength conversion layer.Type: GrantFiled: September 26, 2019Date of Patent: April 20, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Eung Seok Park, Yisu Kim, Jongwoo Kim, Hyein Yang, Wonmin Yun, Byoungduk Lee, Yongchan Ju, Jaeheung Ha
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Publication number: 20200266371Abstract: Provided is a display device. The display device includes a light emitting element layer including a plurality of light emitting elements, and a light control layer on the light emitting element layer and overlapping the light emitting element layer on a plane. At least one of the light emitting elements and the light control layer includes an amorphous carbon light emitter.Type: ApplicationFiled: October 24, 2019Publication date: August 20, 2020Inventors: Yongchan JU, Yisu KIM, Jongwoo KIM, Eung Seok PARK, Wonmin YUN, Jaeheung HA
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Publication number: 20200227485Abstract: A display device includes a first substrate in which a first pixel region and a second pixel region are defined, a second substrate including a first display element and a second display element, a first layer having a first refractive index, and a second layer having a second refractive index. The first substrate includes a first wavelength conversion layer disposed in the first pixel region and a second wavelength conversion layer disposed in the second pixel region. A total reflection critical angle between the first layer and the second layer is smaller than an incident angle of light which is emitted from the first display element and is incident into the second wavelength conversion layer.Type: ApplicationFiled: September 26, 2019Publication date: July 16, 2020Inventors: EUNG SEOK PARK, Yisu Kim, Jongwoo Kim, Hyein Yang, Wonmin Yun, Byoungduk Lee, Yongchan Ju, Jaeheung Ha
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Publication number: 20160043342Abstract: Disclosed are a flexible display apparatus and a method of manufacturing the same. The method includes preparing an organic layer material for a thin film encapsulation layer, coating an edge area and a central area of a substrate with the organic layer material by using a plurality of nozzles, and finishing an organic layer for the thin film encapsulation layer on the substrate. An amount of the organic layer material is adjusted by selectively driving a variable adjustment unit of the substrate.Type: ApplicationFiled: January 9, 2015Publication date: February 11, 2016Inventors: Byoung-Duk Lee, Eung-Seok Park, Won-Min Yun, Yun-Ah Chung, Yoon-Hyeung Cho, Yong-Chan Ju
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Publication number: 20100002213Abstract: A photolithography system using an optical microscope is provided that can form various types of selective patterns at a low cost in small-scale research using unit-size silicon substrates which is not targeted for mass production, without requiring an expensive photomask.Type: ApplicationFiled: February 19, 2008Publication date: January 7, 2010Applicant: Korea University Industrial & Academic Collaboration FoundationInventors: Gyu-Tae Kim, Eung-Seok Park, Do-Young Jang, Jae-Woo Lee
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Publication number: 20090195869Abstract: Provided is an optical microscope system for detecting nanowires that is designed with a rotational polarizer and Fast Fourier Transform (FFT) to allow for use of an existing optical microscope in fabricating an electronic device having the nanowires. The optical microscope system includes: a light source for emitting light to provide the light to a nanowire sample; a rotational polarizer provided on a path of the light emitted from the light source for polarizing the light; an optical microscope for detecting a nanowire image using light that is polarized by the rotational polarizer and incident on the nanowire sample; a CCD camera provided in a region of the optical microscope for photographing and storing the nanowire image detected by the optical microscope; and a data processor for performing Fast Fourier Transform (FFT) on the nanowire image stored in the CCD camera.Type: ApplicationFiled: November 15, 2007Publication date: August 6, 2009Applicants: Electronics and Telecommunications Research Institute, Korea University Industrial & Academic Collaboration FoundationInventors: Eun Kyoung Kim, Seung Eon Moon, Hong Yeol Lee, Jong Hyurk Park, Kang Ho Park, Jong Dae Kim, Gyu Tae Kim, Do Young Jang, Eung Seok Park, Hyun Jin Ji