Patents by Inventor Chong Sup CHANG
Chong Sup CHANG 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: 20240413248Abstract: A thin film transistor according to an exemplary embodiment of the present invention includes an oxide semiconductor. A source electrode and a drain electrode face each other. The source electrode and the drain electrode are positioned at two opposite sides, respectively, of the oxide semiconductor. A low conductive region is positioned between the source electrode or the drain electrode and the oxide semiconductor. An insulating layer is positioned on the oxide semiconductor and the low conductive region. A gate electrode is positioned on the insulating layer. The insulating layer covers the oxide semiconductor and the low conductive region. A carrier concentration of the low conductive region is lower than a carrier concentration of the source electrode or the drain electrode.Type: ApplicationFiled: August 19, 2024Publication date: December 12, 2024Inventors: Yong Su LEE, Yoon Ho KHANG, Dong Jo KIM, Hyun Jae NA, Sang Ho PARK, Se Hwan YU, Chong Sup CHANG, Dae Ho KIM, Jae Neung KIM, Myoung Geun CHA, Sang Gab KIM, Yu-Gwang JEONG
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Publication number: 20240414948Abstract: A display device includes a substrate including an emission area and a non-emission area; a via layer disposed on the substrate and including a recess toward the substrate; a pixel-defining layer overlapping the non-emission area and disposed on the via layer; a first bank layer disposed on the pixel-defining layer and defining a first opening; a second bank layer disposed on the first bank layer and including a tip protruding toward the first opening from a side surface of the first bank layer; a first pixel electrode overlapping the recess of the via layer and disposed on the substrate; a first emissive layer disposed on the first pixel electrode in the first opening; and a first common electrode disposed on the first emissive layer in the first opening and in contact with the first bank layer.Type: ApplicationFiled: February 29, 2024Publication date: December 12, 2024Inventors: Young Seok BAEK, Chong Sup CHANG, Sang Jin PARK, In Kyung YOO
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Patent number: 12087865Abstract: A thin film transistor according to an exemplary embodiment of the present invention includes an oxide semiconductor. A source electrode and a drain electrode face each other. The source electrode and the drain electrode are positioned at two opposite sides, respectively, of the oxide semiconductor. A low conductive region is positioned between the source electrode or the drain electrode and the oxide semiconductor. An insulating layer is positioned on the oxide semiconductor and the low conductive region. A gate electrode is positioned on the insulating layer. The insulating layer covers the oxide semiconductor and the low conductive region. A carrier concentration of the low conductive region is lower than a carrier concentration of the source electrode or the drain electrode.Type: GrantFiled: February 28, 2023Date of Patent: September 10, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Yong Su Lee, Yoon Ho Khang, Dong Jo Kim, Hyun Jae Na, Sang Ho Park, Se Hwan Yu, Chong Sup Chang, Dae Ho Kim, Jae Neung Kim, Myoung Geun Cha, Sang Gab Kim, Yu-Gwang Jeong
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Publication number: 20240237479Abstract: A display device includes a thin-film transistor, an interlayer insulating layer on the thin-film transistor, a source electrode, a drain electrode, and an auxiliary electrode on the interlayer insulating layer, each of the source electrode, the drain electrode, and the auxiliary electrode including a main conductive layer and a sub conductive layer on the main conductive layer, and a via insulating layer on the source electrode, the drain electrode and the auxiliary electrode, the via insulating layer covering the source electrode and the drain electrode and exposing a portion of an upper surface of the second conductive layer of the auxiliary electrode. The via insulating layer includes a first part spaced apart from the upper surface of the second conductive layer of the auxiliary electrode, and the second part adjacent to side surfaces of the main conductive layer and the sub conductive layer of the auxiliary electrode.Type: ApplicationFiled: May 24, 2023Publication date: July 11, 2024Applicant: Samsung Display Co., LTD.Inventors: Eui Kang HEO, Chong Sup CHANG
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Publication number: 20240138231Abstract: A display device includes a thin-film transistor, an interlayer insulating layer on the thin-film transistor, a source electrode, a drain electrode, and an auxiliary electrode on the interlayer insulating layer, each of the source electrode, the drain electrode, and the auxiliary electrode including a main conductive layer and a sub conductive layer on the main conductive layer, and a via insulating layer on the source electrode, the drain electrode and the auxiliary electrode, the via insulating layer covering the source electrode and the drain electrode and exposing a portion of an upper surface of the second conductive layer of the auxiliary electrode. The via insulating layer includes a first part spaced apart from the upper surface of the second conductive layer of the auxiliary electrode, and the second part adjacent to side surfaces of the main conductive layer and the sub conductive layer of the auxiliary electrode.Type: ApplicationFiled: May 23, 2023Publication date: April 25, 2024Applicant: Samsung Display Co., LTD.Inventors: Eui Kang HEO, Chong Sup CHANG
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Patent number: 11811010Abstract: A display device includes a substrate, a first electrode and a second electrode which are spaced apart from each other on the substrate, a first insulating pattern on the substrate to cover at least a portion of each of the first electrode and the second electrode, a light emitting element between the first electrode and the second electrode on the first insulating pattern, a first contact electrode in contact with the first electrode and one end portion of the light emitting element, a second contact electrode in contact with the second electrode and another end portion of the light emitting element, and a second insulating pattern on the light emitting element and of which at least a portion is in contact with each of the first contact electrode and the second contact electrode, wherein the second insulating pattern includes a first upper surface not in contact with the first contact electrode or the second contact electrode.Type: GrantFiled: April 29, 2022Date of Patent: November 7, 2023Assignee: Samsung Display Co., Ltd.Inventors: Chong Sup Chang, Hyun Ae Kim, Eui Kang Heo
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Patent number: 11798954Abstract: A display includes a substrate, a first electrode base layer and a second electrode base layer spaced from each other on the substrate, a first electrode on the first electrode base layer and a second electrode on the second electrode base layer, a first inner bank between the first electrode base layer and the first electrode and a second inner bank between the second electrode base layer and the second electrode, and a light emitting element between the first electrode and the second electrode, at least one end portion of the light emitting element being electrically connected to the first electrode or the second electrode, wherein a side surface of one end portion of each of the first and second electrode base layers is at the same line as a side surface of an end portion of a corresponding one of the first and second electrodes.Type: GrantFiled: September 14, 2020Date of Patent: October 24, 2023Assignee: Samsung Display Co., Ltd.Inventors: Chong Sup Chang, Eui Kang Heo, Young Seok Baek, Ha Na Seo
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Patent number: 11749709Abstract: A display device includes a substrate, a first inner bank and a second inner bank on the substrate and spaced apart from each other, a first electrode on the first inner bank and a second electrode on the second inner bank, and a light emitting element between the first inner bank and the second inner bank, the light emitting element being electrically coupled to the first electrode and the second electrode, wherein the first inner bank comprises a first side surface facing the second inner bank, the second inner bank comprises a second side surface facing the first side surface, and the first side surface and the second side surface are respectively recessed into the first inner bank and the second inner bank, to have a curved shape.Type: GrantFiled: April 11, 2022Date of Patent: September 5, 2023Assignee: Samsung Display Co., Ltd.Inventors: Eui Kang Heo, Chong Sup Chang
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Patent number: 11730020Abstract: A display device includes a first substrate including a display area and a non-display area, first banks spaced apart from each other in the display area and in the non-display area on the first substrate, electrodes spaced apart from each other on the first banks in the display area, dummy electrodes spaced apart from each other on the first banks in the non-display area, a first pattern between the electrodes in the display area, a second pattern between the dummy electrodes in the non-display area, a first light emitting element on the first pattern, a second light emitting element on the second pattern, contact electrodes respectively on the electrodes in the display area to contact one end of the first light emitting element, and dummy contact electrodes respectively on the dummy electrodes in the non-display area to contact one end of the second light emitting element.Type: GrantFiled: June 9, 2021Date of Patent: August 15, 2023Assignee: Samsung Display Co., Ltd.Inventors: Cha Dong Kim, Hee Na Kim, In Kyung Yoo, Sang Jin Lee, Chong Sup Chang
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Patent number: 11706944Abstract: A method of manufacturing a display device may include sequentially forming a first conductive layer, a second conductive layer including copper (Cu), a third conductive layer, and a fourth conductive layer on a substrate, patterning the first conductive layer, the second conductive layer, the third conductive layer, and the fourth conductive layer together to form a conductive pattern including a first layer, a second layer, a third layer, and a fourth layer sequentially on the substrate, removing the fourth layer of the conductive pattern, forming a protective layer covering at least a sidewall of the conductive layer on the substrate, and forming a display element on the protective layer.Type: GrantFiled: October 22, 2020Date of Patent: July 18, 2023Assignee: Samsung Display Co., Ltd.Inventors: Young Seok Baek, Chong Sup Chang, Hana Seo, Eui Kang Heo
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Publication number: 20230215954Abstract: A thin film transistor according to an exemplary embodiment of the present invention includes an oxide semiconductor. A source electrode and a drain electrode face each other. The source electrode and the drain electrode are positioned at two opposite sides, respectively, of the oxide semiconductor. A low conductive region is positioned between the source electrode or the drain electrode and the oxide semiconductor. An insulating layer is positioned on the oxide semiconductor and the low conductive region. A gate electrode is positioned on the insulating layer. The insulating layer covers the oxide semiconductor and the low conductive region. A carrier concentration of the low conductive region is lower than a carrier concentration of the source electrode or the drain electrode.Type: ApplicationFiled: February 28, 2023Publication date: July 6, 2023Inventors: YONG SU LEE, Yoon Ho KHANG, Dong Jo KIM, Hyun Jae NA, Sang Ho PARK, Se Hwan YU, Chong Sup CHANG, Dae Ho KIM, Jae Neung Kim, Myoung Geun CHA, Sang Gab KIM, Yu-Gwang JEONG
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Publication number: 20230187583Abstract: A pixel includes: an emission area and a non-emission area; a via layer including a lower surface and an upper surface, the via layer including a first part having a first thickness, and a second part having a second thickness; a first alignment electrode and a second alignment electrode on the via layer and spaced from each other; an insulating layer on the via layer, the first alignment electrode, and the second alignment electrode, the insulating layer having a planar surface; a first electrode and a second electrode in the emission area and spaced from each other; and light emitting elements on the planer surface of the insulating layer in the emission area, and electrically connected to the first electrode and the second electrode. The first and second alignment electrodes may be on the second part of the via layer and overlap the second part of the via layer.Type: ApplicationFiled: October 18, 2022Publication date: June 15, 2023Inventors: Young Seok BAEK, Ha Na SEO, Chong Sup CHANG, Eui Kang HEO
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Publication number: 20230122457Abstract: A display device may include a conductive pattern disposed on a substrate. A passivation layer may be disposed on the conductive pattern. A first shielding electrode and a second shielding electrode that may be disposed on the passivation layer may be spaced apart from each other. A first electrode may be disposed on the first shielding electrode. A second electrode may be disposed on the second shielding electrode. A light emitting element may be electrically connected between the first electrode and the second electrode. A first distance between the first shielding electrode and the second shielding electrode may be less than a second distance between the first electrode and the second electrode.Type: ApplicationFiled: June 3, 2022Publication date: April 20, 2023Applicant: Samsung Display Co., LTD.Inventors: Eui Kang HEO, Young Seok BAEK, Ha Na SEO, Chong Sup CHANG
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Patent number: 11621305Abstract: A display device includes a first display substrate and a second display substrate. The first display substrate includes a first base, a first electrode disposed on the first base, a second electrode spaced apart from the first electrode, and a light emitting element disposed between the first electrode and the second electrode. The second display substrate faces the first display substrate and is configured to receive light emitted from the light emitting element. The second display substrate includes a second base, a first color filter disposed on a surface of the second base, and a first wavelength conversion pattern disposed on the first color filter. The first wavelength conversion pattern includes a first surface facing the first display substrate, and a second surface facing the first surface and the first color filter. The first surface includes a curved surface portion recessed toward the second surface.Type: GrantFiled: June 18, 2020Date of Patent: April 4, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sang Jin Park, Hyun Ae Kim, Hee Ra Kim, Ha Na Seo, Chong Sup Chang, Eui Kang Heo
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Publication number: 20230061844Abstract: A display device includes a display area and a pad area, a first electrode and a second electrode disposed on a substrate in the display area, the first electrode and the second electrode being spaced apart from each other, a transistor disposed on the substrate in the display area, the transistor being electrically connected to the first electrode, and including a first transistor electrode and a second transistor electrode; a light emitting element disposed on the first electrode and the second electrode; and a pad structure disposed on the substrate in the pad area, the pad structure including a first pad pattern and a second pad pattern which is disposed on the first pad pattern and is electrically connected to the first pad pattern.Type: ApplicationFiled: March 29, 2022Publication date: March 2, 2023Applicant: Samsung Display Co., LTD.Inventors: Chong Sup CHANG, Young Seok BAEK, Ha Na SEO, Eui Kang HEO
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Patent number: 11594639Abstract: A thin film transistor according to an exemplary embodiment of the present invention includes an oxide semiconductor. A source electrode and a drain electrode face each other. The source electrode and the drain electrode are positioned at two opposite sides, respectively, of the oxide semiconductor. A low conductive region is positioned between the source electrode or the drain electrode and the oxide semiconductor. An insulating layer is positioned on the oxide semiconductor and the low conductive region. A gate electrode is positioned on the insulating layer. The insulating layer covers the oxide semiconductor and the low conductive region. A carrier concentration of the low conductive region is lower than a carrier concentration of the source electrode or the drain electrode.Type: GrantFiled: December 8, 2020Date of Patent: February 28, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Yong Su Lee, Yoon Ho Khang, Dong Jo Kim, Hyun Jae Na, Sang Ho Park, Se Hwan Yu, Chong Sup Chang, Dae Ho Kim, Jae Neung Kim, Myoung Geun Cha, Sang Gap Kim, Yu-Gwang Jeong
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Patent number: 11450268Abstract: A display device includes a substrate including a display area and a non-display area around the display area; and a display element layer on the substrate. The display element layer may include first and second electrodes extending in a first direction and spaced apart from each other in a second direction that is different from the first direction; a first light emitting element electrically coupled to the first and second electrodes; a first dummy electrode extending in the first direction and spaced apart from the first and second electrodes; second dummy electrodes spaced apart from each other in the first direction and spaced apart from the first electrode, the second electrode, and the first dummy electrode; and a second light emitting element electrically coupled to the first dummy electrode and the second dummy electrodes.Type: GrantFiled: August 20, 2020Date of Patent: September 20, 2022Assignee: Samsung Display Co., Ltd.Inventors: Chong Sup Chang, Eui Kang Heo, Young Seok Baek, Ha Na Seo
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Publication number: 20220263002Abstract: A display device includes a substrate, a first electrode and a second electrode which are spaced apart from each other on the substrate, a first insulating pattern on the substrate to cover at least a portion of each of the first electrode and the second electrode, a light emitting element between the first electrode and the second electrode on the first insulating pattern, a first contact electrode in contact with the first electrode and one end portion of the light emitting element, a second contact electrode in contact with the second electrode and another end portion of the light emitting element, and a second insulating pattern on the light emitting element and of which at least a portion is in contact with each of the first contact electrode and the second contact electrode, wherein the second insulating pattern includes a first upper surface not in contact with the first contact electrode or the second contact electrode.Type: ApplicationFiled: April 29, 2022Publication date: August 18, 2022Inventors: Chong Sup CHANG, Hyun Ae KIM, Eui Kang HEO
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Publication number: 20220238598Abstract: A display device includes a substrate, a first inner bank and a second inner bank on the substrate and spaced apart from each other, a first electrode on the first inner bank and a second electrode on the second inner bank, and a light emitting element between the first inner bank and the second inner bank, the light emitting element being electrically coupled to the first electrode and the second electrode, wherein the first inner bank comprises a first side surface facing the second inner bank, the second inner bank comprises a second side surface facing the first side surface, and the first side surface and the second side surface are respectively recessed into the first inner bank and the second inner bank, to have a curved shape.Type: ApplicationFiled: April 11, 2022Publication date: July 28, 2022Inventors: Eui Kang HEO, Chong Sup CHANG
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Patent number: 11393798Abstract: A display device includes a first electrode and a second electrode disposed on a substrate and spaced apart from each other, a first light emitting element disposed between the first electrode and the second electrode, a second light emitting element disposed on the first electrode and spaced apart from the first light emitting element, and an insulating layer disposed on the first electrode and overlapping the second light emitting element. The insulating layer includes at least one contact hole which penetrates the insulating layer to expose a part of the first electrode.Type: GrantFiled: June 30, 2020Date of Patent: July 19, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Eui Kang Heo, Chong Sup Chang