Patents by Inventor Chul-Hyun CHOI
Chul-Hyun CHOI 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: 20240122026Abstract: A display device including a base layer having a display region defined along a first direction and a second direction that are orthogonal to each other, a plurality of first light emitting elements on the base layer, wherein each one of the first light emitting elements includes a first electrode, a second electrode on the first electrode, and a first emission layer between the first electrode and the second electrode, a pixel definition layer having a plurality of first emission openings each of which exposes the first electrode of a corresponding first light emitting element of the first light emitting elements, a thin encapsulation layer that covers the first light emitting elements and the pixel definition layer, and a sensing electrode on the thin encapsulation layer.Type: ApplicationFiled: September 7, 2023Publication date: April 11, 2024Inventors: CHUL HYUN CHOI, MINJAE KIM, JAEMIN KIM, INHWA LEE
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Publication number: 20240114725Abstract: A display device includes a base layer, a pixel defining layer, a light emitting element comprising a light emitting layer, and an encapsulation layer disposed on the light emitting element. The encapsulation layer includes a first optical layer, a second optical layer disposed on the first optical layer, a stabilization layer disposed on the second optical layer, and an optical control layer disposed on the stabilization layer. A refractive index of the first optical layer is greater than a refractive index of the second optical layer, and a refractive index of the stabilization layer is greater than each of the refractive index of the second optical layer and a refractive index of the optical control layer. A thickness of the stabilization layer is greater than a thickness of the first optical layer and a thickness of the second optical layer.Type: ApplicationFiled: July 3, 2023Publication date: April 4, 2024Inventor: CHUL HYUN CHOI
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Publication number: 20230132240Abstract: A display panel includes first, second, and third color light emitting areas and a non-light emitting area disposed among the first, second, and third color light emitting areas. First, second, and third openings corresponding to the first, second, and third color light emitting areas are defined in an input sensor. A sensing electrode includes a first line area and a second line area facing each other in a first direction around each of the first, second, and third openings and a third line area and a fourth line area facing each other in a second direction intersecting the first direction. A distance between the first color light emitting area and the first line area is less than a distance between the second and third color light emitting areas and the first line area.Type: ApplicationFiled: October 17, 2022Publication date: April 27, 2023Inventor: CHUL HYUN CHOI
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Publication number: 20220376208Abstract: A display device comprises a substrate; a light emitting element disposed on the substrate; a first layer disposed on the light emitting element, a second layer disposed on the first layer; and an encapsulation layer disposed on the second layer. The first layer has a first refractive index, the second layer has a second refractive index, the first refractive index is from 1.7 to 2.2, and the second refractive index is from 1.25 to 1.45.Type: ApplicationFiled: April 25, 2022Publication date: November 24, 2022Inventors: CHUL HYUN CHOI, HYUN GUE SONG, MIN JAE KIM
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Publication number: 20220246882Abstract: A display device includes: a substrate; a display element on the substrate; a capping layer on the display element; a first auxiliary layer on the capping layer; and a thin-film encapsulation layer on the first auxiliary layer, wherein the thin-film encapsulation layer comprises a (1-1)-th inorganic encapsulation layer on the first auxiliary layer and a (1-2)-th inorganic encapsulation layer on the (1-1)-th inorganic encapsulation layer, wherein a refractive index of the first auxiliary layer is smaller than a refractive index of the capping layer and a refractive index of the (1-1)-th inorganic encapsulation layer, and a refractive index of the (1-2)-th inorganic encapsulation layer is smaller than the refractive index of the (1-1)-th inorganic encapsulation layer.Type: ApplicationFiled: January 27, 2022Publication date: August 4, 2022Inventors: Hyun Gue SONG, Hyun Ho JUNG, Chul Hyun CHOI, Hee Seong JEONG, Sang Min HONG
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Publication number: 20220140290Abstract: A display device includes a substrate; a light-emitting element on the substrate; a capping layer on the light-emitting element; a first inorganic encapsulation layer on the capping layer; an organic encapsulation layer on the first inorganic encapsulation layer; and a second inorganic encapsulation layer on the organic encapsulation layer. The first inorganic encapsulation layer includes a first sub-inorganic encapsulation layer between the capping layer and the organic encapsulation layer, and a second sub-inorganic encapsulation layer between the first sub-inorganic encapsulation layer and the organic encapsulation layer.Type: ApplicationFiled: October 27, 2021Publication date: May 5, 2022Inventors: Chul Hyun CHOI, Min Jae KIM, Kyung Hee LEE, Suk Jin LEE, In Hwa LEE, Hyuk Sang JUN
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Publication number: 20210051807Abstract: The present disclosure provides a display device that include: a display panel that includes a display area and a peripheral area that is provided at the periphery of an edge of the display area; a window that is provided on one side of the display panel to protect the display panel; and an adhesive film that is provided between the display panel and the window to bond the display panel and the window to each other, wherein the adhesive film in an area that corresponds to the peripheral area and the adhesive film in an area that corresponds to the display area have different properties.Type: ApplicationFiled: November 4, 2020Publication date: February 18, 2021Inventor: Chul Hyun CHOI
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Patent number: 10615367Abstract: A display device includes: a substrate on which a display area and a non-display area are defined; a plurality of pixels disposed on the substrate in the display area; and an encapsulation layer disposed on the pixels to cover the pixels, where the encapsulation layer including a first region and a second region different from the first region. The encapsulation layers has a thickness in a range of 1.75 ?m to 4.0 ?m, and the ratio of a thickness of the second region of the encapsulation layer to a thickness of the first region of the encapsulation layer is in a range of 0.95 to 1.0.Type: GrantFiled: December 13, 2017Date of Patent: April 7, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Chul Hyun Choi, Ji Hye Moon, Sun A Yang, Hyuk Sang Jun
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Patent number: 10593732Abstract: A light-emitting diode according to an exemplary embodiment includes: a first electrode; a second electrode overlapping the first electrode; an emission layer positioned between the first electrode and the second electrode; and a first capping layer positioned on the first electrode, wherein the first capping layer includes at least one among LiF, MgF2, AlF3, NaF, and AlOx, and a thickness of the first capping layer is 30 nm to 40 nm.Type: GrantFiled: March 28, 2018Date of Patent: March 17, 2020Assignee: Samsung Display Co., Ltd.Inventors: Chul Hyun Choi, Hyun Shik Lee, Hyuk Sang Jun
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Publication number: 20190043929Abstract: A light-emitting diode according to an exemplary embodiment includes: a first electrode; a second electrode overlapping the first electrode; an emission layer positioned between the first electrode and the second electrode; and a first capping layer positioned on the first electrode, wherein the first capping layer includes at least one among LiF, MgF2, AlF3, NaF, and AlOx, and a thickness of the first capping layer is 30 nm to 40 nm.Type: ApplicationFiled: March 28, 2018Publication date: February 7, 2019Inventors: Chul Hyun CHOI, Hyun Shik LEE, Hyuk Sang JUN
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Publication number: 20180254433Abstract: A display device includes: a substrate on which a display area and a non-display area are defined; a plurality of pixels disposed on the substrate in the display area; and an encapsulation layer disposed on the pixels to cover the pixels, where the encapsulation layer including a first region and a second region different from the first region. The encapsulation layers has a thickness in a range of 1.75 ?m to 4.0 ?m, and the ratio of a thickness of the second region of the encapsulation layer to a thickness of the first region of the encapsulation layer is in a range of 0.95 to 1.0.Type: ApplicationFiled: December 13, 2017Publication date: September 6, 2018Inventors: Chul Hyun CHOI, Ji Hye MOON, Sun A YANG, Hyuk Sang JUN
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Publication number: 20180160552Abstract: The present disclosure provides a display device that include: a display panel that includes a display area and a peripheral area that is provided at the periphery of an edge of the display area; a window that is provided on one side of the display panel to protect the display panel; and an adhesive film that is provided between the display panel and the window to bond the display panel and the window to each other, wherein the adhesive film in an area that corresponds to the peripheral area and the adhesive film in an area that corresponds to the display area have different properties.Type: ApplicationFiled: July 20, 2017Publication date: June 7, 2018Inventor: Chul Hyun CHOI
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Patent number: 9707744Abstract: A lamination apparatus includes a plurality of fixed frames, each of which has at least one bent portion; a plurality of variable frames, each of which is arranged between one fixed frame and another fixed frame; and a plurality of light sources arranged on the fixed frames and the variable frame.Type: GrantFiled: August 27, 2014Date of Patent: July 18, 2017Assignee: Samsung Display Co., Ltd.Inventors: Chul Hyun Choi, Sung Woo Cho
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Publication number: 20160343992Abstract: An organic light-emitting display device that includes a substrate, first and second electrodes facing each other on the substrate, an organic light-emitting layer between the first and second electrodes, a thin-film encapsulation (TFE) film on the second electrode, a reflection reduction layer on the TFE film, and a refraction adjustment layer between the reflection reduction layer and the organic light-emitting layer.Type: ApplicationFiled: October 19, 2015Publication date: November 24, 2016Inventors: Gun Shik Kim, Soon Ryong Park, Chul Hyun Choi, Kwang Woo Lee
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Publication number: 20160223151Abstract: A light emitting diode (LED) rail includes a rail body, a first electrode and a second electrode within the rail body, and a plurality of LEDs in the rail body and electrically connected to the first electrode and the second electrode. The LEDs include a first lead frame and a second lead frame. The first lead frame and the second lead frame slidably contact the first electrode and the second electrode, respectively.Type: ApplicationFiled: July 17, 2015Publication date: August 4, 2016Inventors: Chul Hyun CHOI, Dong Jin SEO, Sung Woo CHO
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Publication number: 20150321457Abstract: A lamination apparatus includes a plurality of fixed frames, each of which has at least one bent portion; a plurality of variable frames, each of which is arranged between one fixed frame and another fixed frame; and a plurality of light sources arranged on the fixed frames and the variable frame.Type: ApplicationFiled: August 27, 2014Publication date: November 12, 2015Inventors: Chul Hyun CHOI, Sung Woo CHO
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Patent number: 9022630Abstract: A display module includes a display panel including a display area and a non-display area, an upper prism layer including a plurality of parallel upper prisms at a lower surface thereof, wherein the plurality of the upper prisms are parallel to one another, a lower prism layer including a plurality of lower prisms at a lower surface thereof, wherein the plurality of the lower prisms are parallel to one another and extend in a substantially perpendicular direction to the upper prisms, and an adhesive part which is at a side of the upper prism layer and is adhered to the lower prism layer and the non-display area of the display panel, wherein the adhesive part fixes the upper prism layer and the lower prism layer to each other.Type: GrantFiled: December 4, 2012Date of Patent: May 5, 2015Assignee: Samsung Display Co., Ltd.Inventors: Dong-Hoon Kim, Se-Ki Park, Seung-Hwan Chung, Jin-Sung Choi, Chul-Hyun Choi, Seung-Hwa Ha, Seong-Yong Hwang
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Patent number: 8926155Abstract: In a backlight assembly and a display apparatus having the backlight assembly, the backlight assembly includes a light source, a light guide, a first reflector, and an optical unit. The light guide is disposed adjacent to the light source, extends substantially parallel with a longitudinal direction of the light source, and refracts light emitted from the light source. The first reflector is disposed under the light guide and reflects the refracted light toward the optical unit. The optical unit is disposed over the first reflector such that an empty space is formed between the optical unit and the first reflector.Type: GrantFiled: August 23, 2012Date of Patent: January 6, 2015Assignee: Samsung Display Co., Ltd.Inventors: Chul-Hyun Choi, Kwang-Hoon Lee, Se-Ki Park
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Publication number: 20130272022Abstract: In a backlight assembly and a display apparatus having the backlight assembly, the backlight assembly includes a light source, a light guide, a first reflector, and an optical unit. The light guide is disposed adjacent to the light source, extends substantially parallel with a longitudinal direction of the light source, and refracts light emitted from the light source. The first reflector is disposed under the light guide and reflects the refracted light toward the optical unit. The optical unit is disposed over the first reflector such that an empty space is formed between the optical unit and the first reflector.Type: ApplicationFiled: August 23, 2012Publication date: October 17, 2013Applicant: Samsung Display Co., Ltd.Inventors: Chul-Hyun CHOI, Kwang-Hoon LEE, Se-Ki PARK