Patents by Inventor Keun-Chan Oh
Keun-Chan 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).
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Publication number: 20220085114Abstract: A color transformation substrate comprises: a base portion having first and second light-blocking areas and first to third light-transmitting areas, where the light-transmitting areas are successively positioned along a first direction; first to third color filters positioned in the first to third light-transmitting areas, respectively; a light-blocking member positioned in the first light-blocking area, and including part contacting the base portion; a color pattern positioned in the second light-blocking area so as to contact the base portion; a first wavelength conversion pattern positioned on the second color filter so as to wavelength-convert light having a first color into light having a second color; and a second wavelength conversion pattern positioned on the third color filter so as to wavelength-convert light having the first color into light having a third color different from light having the second color. The color pattern and the first color filter comprise the same color material.Type: ApplicationFiled: March 13, 2019Publication date: March 17, 2022Inventors: Jae Min SEONG, Keun Chan OH, Gak Seok LEE, Sun Kyu JOO, Byung Chul KIM, In Ok KIM, In Seok SONG, Ji Eun JANG, Chang Soon JANG
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Patent number: 11264437Abstract: A display device includes a substrate, a thin film transistor provided on the substrate, a first electrode connected to the thin film transistor, a second electrode overlapping the first electrode, and a partition wall and a light-emitting device layer provided between the first electrode and the second electrode. The partition wall may include a main chain and a side chain connected to the main chain, and a carbon number of the side chain may be equal to or greater than 14.Type: GrantFiled: May 13, 2019Date of Patent: March 1, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Suk Hoon Kang, Hoi-Lim Kim, Min-Jae Kim, Beom-Soo Shin, Keun Chan Oh, Hong Yeon Lee
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Publication number: 20220052121Abstract: Provided is a display device. The display device includes a first base portion, a second base portion facing the first base portion, a light emitting layer disposed on one surface of the first base portion and emitting first light, a first wavelength conversion pattern disposed on the light emitting layer and converting the first light into second light having a different wavelength from the first light, a first color filter overlapping the first wavelength conversion pattern on one surface of the second base portion and spaced apart from the first wavelength conversion pattern, and an air layer interposed between the first wavelength conversion pattern and the first color filter.Type: ApplicationFiled: June 3, 2021Publication date: February 17, 2022Inventors: Chang Soon JANG, Keun Chan OH, Gak Seok LEE, Sang Hun LEE, So Yun LEE, Ji Eun JANG
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Publication number: 20210384274Abstract: A display device includes a substrate including a light emitting area and a light blocking area that surrounds the light emitting area, and a bank structure disposed in the light blocking area and having an opening that corresponds to the light emitting area. The bank structure has a concave portion that is formed on an upper surface.Type: ApplicationFiled: April 8, 2021Publication date: December 9, 2021Inventors: Jea Heon AHN, Keun Chan OH, Jeong Ki KIM, Jong-Hoon KIM, Ji Seong YANG
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Publication number: 20210311338Abstract: Provided are a wavelength conversion layer and a display device. A color conversion element comprises: a wavelength conversion layer; one or more low refractive layers which are disposed on and/or under the wavelength conversion layer and have a lower refractive index than the wavelength conversion layer; and one or more capping layers which are disposed between the wavelength conversion layer and the low refractive layers and/or on a surface opposite to a surface of each of the low refractive layers which faces the wavelength conversion layer.Type: ApplicationFiled: June 16, 2021Publication date: October 7, 2021Inventors: Taek Joon LEE, Young Gu KIM, Keun Chan OH, Sun Young CHANG, Hye Lim JANG, Baek Kyun JEON, Jin Soo JUNG, Kyung Seon TAK, Jae Jin LYU, Moon Jung BAEK
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Patent number: 11131889Abstract: A liquid crystal display device and a method of manufacturing a liquid crystal display device are provided. The liquid crystal display device includes: a base; an alignment inducing layer on the base and including a first compound represented by formula A1 or a polymer of the first compound; and a liquid crystal layer on the alignment inducing layer that includes liquid crystals: where R1 may be hydrogen or a polymerizable group, R2 may be a hydrophilic group, SP1 and SP2 may each independently be a single bond, a C1-C12 alkylene group, or a C1-C12 alkoxylene group, Z may be a single bond, an ester group, or an ether group, and X1, X2 and X3 may each independently be hydrogen, a methyl group, fluorine, or chlorine.Type: GrantFiled: September 26, 2018Date of Patent: September 28, 2021Assignees: Samsung Display Co., Ltd., Industrial Cooperation Foundation Chonbuk National UniversityInventors: Ho Lim, Shin Woong Kang, Keun Chan Oh, Jae Jin Lyu, Aboozar Nasrollahi, Vineet Kumar
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Patent number: 11078422Abstract: An LCD panel, comprises substrates facing each other, a liquid crystal layer disposed between the substrates and liquid crystal alignment layers, each sandwiched between the liquid crystal layer and a respective one of the substrates, wherein the liquid crystal alignment layers comprises hydrocarbon derivative having perfluorocarbon group.Type: GrantFiled: March 20, 2018Date of Patent: August 3, 2021Inventors: Shin Woong Kang, Kundu Sudarshan, Byung Wook Ahn, Keun Chan Oh, Chang Hun Lee, Soon Joon Rho, Jae Jin Lyu
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Patent number: 11042059Abstract: Provided are a wavelength conversion layer and a display device. A color conversion element comprises: a wavelength conversion layer; one or more low refractive layers which are disposed on and/or under the wavelength conversion layer and have a lower refractive index than the wavelength conversion layer; and one or more capping layers which are disposed between the wavelength conversion layer and the low refractive layers and/or on a surface opposite to a surface of each of the low refractive layers which faces the wavelength conversion layer.Type: GrantFiled: May 28, 2020Date of Patent: June 22, 2021Assignee: Samsung Display Co., Ltd.Inventors: Taek Joon Lee, Young Gu Kim, Keun Chan Oh, Sun Young Chang, Hye Lim Jang, Baek Kyun Jeon, Jin Soo Jung, Kyung Seon Tak, Jae Jin Lyu, Moon Jung Baek
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Publication number: 20210091156Abstract: A display device includes a substrate, a thin film transistor on the substrate, an interlayer insulating layer on the thin film transistor, an electrode on the interlayer insulating layer, the electrode including an emission region, a contact region overlapping the thin film transistor, and a dummy region protruding from the emission region in a direction different from the contact region, and an emission layer on the electrode, the emission region of the electrode overlapping the emission layer.Type: ApplicationFiled: December 4, 2020Publication date: March 25, 2021Applicant: Samsung Display Co., Ltd.Inventors: Sun-Kyu JOO, In Seok SONG, Keun Chan OH, Byung-Chul KIM, In Ok KIM, Gak Seok LEE, Chang-Soon JANG
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Patent number: 10910593Abstract: An organic light emitting display device includes: a first substrate; a plurality of pixels on the first substrate, each of the pixels including a corresponding portion of an organic light emitting layer on the first substrate; an encapsulation film on the organic light emitting layer; a protruding pattern layer on the encapsulation film and comprising a plurality of spacers at a boundary between adjacent ones of the pixels; an adhesive layer on the protruding pattern layer; and a second substrate on the adhesive layer.Type: GrantFiled: February 14, 2019Date of Patent: February 2, 2021Assignee: Samsung Display Co., Ltd.Inventors: Sun Kyu Joo, Byung Chul Kim, In Ok Kim, Keun Chan Oh, Chang Soon Jang, In Seok Song, Gak Seok Lee
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Publication number: 20210013268Abstract: A light emitting display device comprises a substrate, a first pixel electrode disposed on the substrate, a pixel defining film disposed on the first pixel electrode and having a first opening at least partially exposing the first pixel electrode, a first organic light emitting layer disposed on the pixel defining film and overlapping with the first opening of the pixel defining film, and a black matrix disposed on the first organic light emitting layer and having a first opening overlapping with the first organic light emitting layer. Light having passed through the first opening of the black matrix is one of red light, green light, and blue light. The first opening of the black matrix may have a shape with a curved portion.Type: ApplicationFiled: September 29, 2020Publication date: January 14, 2021Applicant: Samsung Display Co. Ltd.Inventors: Sun Kyu JOO, Byung Chul KIM, Sung Chul KIM, Su Jeong KIM, In Ok KIM, Hye Ran MUN, In Seok SONG, Keun Chan OH, Jae Jin LYU, Yui Ku LEE
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Publication number: 20210005672Abstract: A color conversion substrate and a display device are provided. The color conversion substrate includes a base substrate, a first color filter and a second color filter disposed on a surface of the base substrate, a first partition layer disposed between the first color filter and the second color filter, a second partition layer disposed on the first partition layer, a first wavelength conversion pattern disposed on the first color filter and a second wavelength conversion pattern disposed on the second color filter, wherein the first partition layer includes a first lower surface disposed on the first color filter and a second lower surface disposed on the second color filter.Type: ApplicationFiled: June 11, 2020Publication date: January 7, 2021Applicant: Samsung Display Co., LTD.Inventors: Gak Seok LEE, Byung Chul KIM, In Ok KIM, Jae Min SEONG, In Seok SONG, Keun Chan OH, Ji Eun JANG, Chang Soon JANG, Sun Kyu JOO, Ha Lim JI
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Patent number: 10883049Abstract: A liquid crystal display (LCD) panel includes a first substrate, a second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystals with negative dielectric anisotropy and a hindered amine light stabilizer (HALS).Type: GrantFiled: August 29, 2017Date of Patent: January 5, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sung Hwan Hong, Mi Suk Kim, Tae Ho Kim, Keun Chan Oh, Chang Hun Lee
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Patent number: 10868092Abstract: A display device includes a substrate, a thin film transistor on the substrate, an interlayer insulating layer on the thin film transistor, an electrode on the interlayer insulating layer, the electrode including an emission region, a contact region overlapping the thin film transistor, and a dummy region protruding from the emission region in a direction different from the contact region, and an emission layer on the electrode, the emission region of the electrode overlapping the emission layer.Type: GrantFiled: December 11, 2018Date of Patent: December 15, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sun-Kyu Joo, In Seok Song, Keun Chan Oh, Byung-chul Kim, In Ok Kim, Gak Seok Lee, Chang-Soon Jang
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Patent number: 10854687Abstract: An organic light emitting display device comprising: a substrate; a first pixel electrode disposed on the substrate; a pixel defining film disposed on the first pixel electrode and having a first opening at least partially exposing the first pixel electrode; a first organic light emitting layer disposed on the pixel defining film and overlapping with the first opening of the pixel defining film; and a black matrix disposed on the first organic light emitting layer and having a first opening overlapping with the first organic light emitting layer. Light having passed through the first opening of the black matrix is one of red light, green light, and blue light. The first opening of the black matrix may have a shape with a curved portion.Type: GrantFiled: February 16, 2018Date of Patent: December 1, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sun Kyu Joo, Byung Chul Kim, Sung Chul Kim, Su Jeong Kim, In Ok Kim, Hye Ran Mun, In Seok Song, Keun Chan Oh, Jae Jin Lyu, Yui Ku Lee
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Patent number: 10824012Abstract: A display device and a method of manufacturing a display device are provided. The display device includes: a base substrate; a color conversion pattern disposed on the base substrate; and a low refractive layer disposed on the base substrate, stacked with the color conversion pattern, and having a lower refractive index than the color conversion pattern. The low refractive layer includes a first base resin and particle clusters dispersed in the first base resin, and the particle clusters include a plurality of particles and bridges that combine the particles.Type: GrantFiled: September 7, 2018Date of Patent: November 3, 2020Assignee: Samsung Display Co., Ltd.Inventors: Jin Soo Jung, Young Gu Kim, Taek Joon Lee, Keun Chan Oh, Sun Young Chang, Hye Lim Jang, Baek Kyun Jeon, Kyung Seon Tak
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Publication number: 20200319516Abstract: A quantum dot, a color conversion panel, and a display device, the quantum dot including a core; and a shell layer positioned outside of the core, wherein at least one of the core and the shell layer is doped with aluminum, silicon, titanium, magnesium, or zinc, and the core includes a Group III-V compound.Type: ApplicationFiled: June 23, 2020Publication date: October 8, 2020Inventors: Kyoung Won PARK, Baek Hee LEE, Min Ki NAM, Hyeok Jin LEE, Keun Chan OH, Jae Jin LYU, Baek Kyun JEON, Sungjun KOH, Doh Chang LEE
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Publication number: 20200292859Abstract: Provided are a wavelength conversion layer and a display device. A color conversion element comprises: a wavelength conversion layer; one or more low refractive layers which are disposed on and/or under the wavelength conversion layer and have a lower refractive index than the wavelength conversion layer; and one or more capping layers which are disposed between the wavelength conversion layer and the low refractive layers and/or on a surface opposite to a surface of each of the low refractive layers which faces the wavelength conversion layer.Type: ApplicationFiled: May 28, 2020Publication date: September 17, 2020Inventors: Taek Joon LEE, Young Gu KIM, Keun Chan OH, Sun Young CHANG, Hye Lim JANG, Baek Kyun JEON, Jin Soo JUNG, Kyung Seon TAK, Jae Jin LYU, Moon Jung BAEK
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Patent number: 10747068Abstract: A display device includes a first base substrate including a display area and a peripheral area around the display area; a voltage line disposed on the peripheral area of the first base substrate; a protrusion disposed on the voltage line and including a first pattern containing a first color material and a second pattern containing a second color material different from the first color material; a connection electrode disposed on the protrusion and connected with the voltage line; and a light-blocking pattern disposed on the connection electrode and provided with an opening for partially exposing the connection electrode, wherein the protrusion includes a multilayer portion where the first pattern and the second pattern overlap each other and a single-layer portion where the first pattern and the second pattern do not overlap each other, and a lateral surface of the light-blocking pattern, defining the opening, overlaps the single-layer portion.Type: GrantFiled: April 22, 2019Date of Patent: August 18, 2020Assignee: Samsung Display Co., Ltd.Inventors: Sun Kyu Joo, Keun Chan Oh, Jun Woo Lee, Yun Ho Lee
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Publication number: 20200258944Abstract: A display device is provided. A display device includes a plurality of pixels arranged in a row axis and in a column axis that intersects the row axis, a first substrate on which a light-emitting element disposed in each of the pixels is disposed, a second substrate which faces the first substrate, and a first wavelength conversion pattern disposed on the second substrate in a first pixel column and which converts wavelength of light emitted from the light-emitting element. The first wavelength conversion pattern includes a first main pattern part arranged in a stripe fashion along the column axis and a protruding pattern part projected from the first main pattern part toward at least one of first and second directions of the row axis.Type: ApplicationFiled: July 11, 2019Publication date: August 13, 2020Inventors: Sun Kyu JOO, Keun Chan OH, Byung Chul KIM, In Ok KIM, In Seok SONG, Gak Seok LEE, Chang Soon JANG