Patents by Inventor Won-Hoe Koo
Won-Hoe Koo 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: 10720597Abstract: An electroluminescent display device includes: a substrate including a subpixel; a thin film transistor disposed at the subpixel; an overcoat layer disposed on the thin film transistor; a first electrode disposed on the overcoat layer and electrically connected to the thin film transistor; a bank layer disposed on the overcoat layer and the first electrode, the bank layer including a plurality of openings configured to expose the first electrode and a plurality of opening patterns formed in a bar shape to expose the first electrode and connect the plurality of openings; an emitting layer disposed on the first electrode and the bank layer; and a second electrode disposed on the emitting layer.Type: GrantFiled: August 22, 2018Date of Patent: July 21, 2020Assignee: LG Display Co., Ltd.Inventors: Yong-Hoon Choi, Keum-Kyu Min, Won-Hoe Koo
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Publication number: 20200227686Abstract: An OLED display device includes a first substrate including a plurality of sub-pixels each including an emission area and a non-emission area; organic light emitting diodes on the first substrate; a second substrate opposed to the first substrate; a black matrix and a color filter layer on one side of the second substrate; a spacer on the black matrix and overlapping or parallel to one of the plurality of the gate lines and the plurality of data lines; and a film layer on the spacer, wherein an air gap is provided between the second substrate and the film layer, and a part of the film layer is exposed by the air gap.Type: ApplicationFiled: March 25, 2020Publication date: July 16, 2020Applicant: LG Display Co., Ltd.Inventors: Han-Sun PARK, Won-Hoe KOO, Ji-Hyang JANG
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Patent number: 10714709Abstract: Provided are an organic light-emitting diode (OLED) and an organic light-emitting device including the same. The OLED includes a first electrode, an organic emissive layer which includes a plurality of convex curves or a plurality of concave curves in a light-emitting region and of which a slope of an inclined plane of an upper region with respect to a horizontal line dividing a height of the plurality of convex curves into halves is greater than a slope of an inclined plane of a lower region thereof, and a second electrode provided on the organic emissive layer. Accordingly, the OLED and the organic light-emitting device including the same are capable of improving current efficiency.Type: GrantFiled: July 8, 2019Date of Patent: July 14, 2020Assignee: LG Display Co., Ltd.Inventors: Ji-Hyang Jang, So-Young Jo, Won-Hoe Koo
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Patent number: 10693108Abstract: A light extraction pattern is disposed in each hole of a first electrode, or a first electrode including round portions and pattern portions is disposed so that light trapped in an emission layer can be output uniformly. In this way, the light extraction efficiency can be effectively improved, and occurrence of a black area can be prevented.Type: GrantFiled: August 22, 2018Date of Patent: June 23, 2020Assignee: LG Display Co., Ltd.Inventors: Jin-Tae Kim, Won-Hoe Koo, Yong-Hoon Choi
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Patent number: 10685939Abstract: A white LED module includes a circuit board, at least one first LED light source on the circuit board and emitting a first white light having a first color temperature, at least one second LED light source on the circuit board and emitting a second white light having a second color temperature, higher than the first color temperature, a wiring structure in the circuit board to selectively drive the at least one first LED light source and the at least one second LED light source, and a transparent encapsulant on the circuit board, to cover the at least one first LED light source and the at least one second LED light source. The transparent encapsulant includes a transparent resin and a light-scattering powder in the transparent resin.Type: GrantFiled: January 9, 2019Date of Patent: June 16, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae Sung You, Yun Tae Hwang, Ho Young Song, Won Hoe Koo, Jae Chul Kim, Ho Sun Paek
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Patent number: 10658623Abstract: An electroluminescent display device includes an overcoat layer on a substrate; a plurality of low-refractive members formed of an inorganic matter and disposed on the overcoat layer; a first electrode on the overcoat layer and the plurality of low-refractive members; a bank layer disposed on the overcoat layer and the first electrode and including an opening configured to expose the first electrode; an emitting layer disposed on the first electrode; and a second electrode disposed on the emitting layer, wherein each of the plurality of low-refractive members includes a first flat surface contacting the first electrode, a second flat surface having an area greater than that of the first flat surface and contacting the overcoat layer and first and second inclined surfaces connecting the first flat surface and the second flat surface, and, wherein a refractive index of each of the plurality of low-refractive members is lower than those of the overcoat layer and the first electrode.Type: GrantFiled: October 25, 2018Date of Patent: May 19, 2020Assignee: LG DISPLAY CO., LTD.Inventors: Yong-Hoon Choi, Won-Hoe Koo
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Patent number: 10651426Abstract: An OLED display device includes a first substrate including a plurality of sub-pixels each including an emission area and a non-emission area; organic light emitting diodes on the first substrate; a second substrate opposed to the first substrate; a black matrix and a color filter layer on one side of the second substrate; a spacer on the black matrix and overlapping or parallel to one of the plurality of the gate lines and the plurality of data lines; and a film layer on the spacer, wherein an air gap is provided between the second substrate and the film layer, and a part of the film layer is exposed by the air gap.Type: GrantFiled: November 27, 2017Date of Patent: May 12, 2020Assignee: LG Display Co., Ltd.Inventors: Han-Sun Park, Won-Hoe Koo, Ji-Hyang Jang
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Publication number: 20200083482Abstract: Disclosed is a light emitting display device which facilitates to improve light-extraction efficiency of pixels, and to maximize light-extraction efficiency of each pixel, wherein the light emitting display device includes a substrate having a first area and a second area, a planarization coating layer prepared on the substrate and configured to have a first curve pattern prepared on the first area, and a second curve pattern prepared on the second area, and an emission device prepared on the first curve pattern and the second curve pattern, wherein a thickness of the planarization coating layer overlapping the first curve pattern is different from a thickness of the planarization coating layer overlapping the second curve pattern, and each of the first curve pattern and the second curve pattern includes a plurality of protruding portions having an aspect ratio of 0.4˜0.6.Type: ApplicationFiled: November 3, 2019Publication date: March 12, 2020Applicant: LG Display Co., Ltd.Inventors: Soo-Kang KIM, Won-Hoe KOO, Ji-Hyang JANG, So-Young JO
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Publication number: 20200058721Abstract: The present disclosure is directed to an organic light emitting diode display device includes a substrate having an emitting area and a non-emitting area; an overcoating layer on a first surface of the substrate and including a plurality of convex portions and a plurality of concave portions, at least one of the plurality of convex portions including a bottom surface portion, a top surface portion and a side surface portion between the bottom and top surface portions; a light emitting diode on the overcoating layer; and a cholesteric liquid crystal layer at a transmission direction of a light emitted from the light emitting diode.Type: ApplicationFiled: August 8, 2019Publication date: February 20, 2020Inventors: Dong-Min Sim, Won-Hoe Koo, Ji-Hyang Jang
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Publication number: 20200058708Abstract: Various embodiments provide an organic light emitting diode display device that includes a substrate having an emitting area and a non-emitting area; an overcoating layer on the substrate and including a convex portion and a concave portion. The convex portion includes a bottom surface portion, a top surface portion and a side surface portion between the bottom surface portion and the top surface portion. The organic light emitting diode further includes a first electrode on the overcoating layer; a light emitting layer on the first electrode; and a second electrode on the light emitting layer. The side surface portion is a main emission region having a first emission spectrum and the concave portion is an auxiliary emission region having a second emission spectrum different from the first emission spectrum. The main emission region and the auxiliary emission region are an effective emission region.Type: ApplicationFiled: August 8, 2019Publication date: February 20, 2020Inventors: Ji-Hyang JANG, Won-Hoe KOO, Tae-Shick KIM
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Patent number: 10527271Abstract: An LED lighting device is provided. The LED lighting device may include a light source configured to emit a light of first color temperature, second color temperature, and third color temperature and a switch electrically connected to the light source to control the light source to emit the lights of the first color temperature, the second color temperature, and the third color temperature, respectively. The light source includes a first light source configured to emit a light of a first color temperature, and a second light source configured to emit a light of a second color temperature that is different from the first color temperature, and the light source emits a light of a third color temperature between the first and second color temperatures when the switch parallel-connects the first light source and the second light source.Type: GrantFiled: July 17, 2017Date of Patent: January 7, 2020Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Won Hoe Koo, Il Seok Lee, Dong Hyuk Kim
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Patent number: 10522600Abstract: Disclosed is an organic light-emitting display device having a micro lens array (MLA) structure applied to a display panel in order to improve light extraction efficiency. In the organic light-emitting display device, an optical device, including a reactive mesogen (RM) and a dye, is provided between a polarizer and a quarter wave plate (QWP) to block light spreading to a viewing angle, thereby reducing a diffuse reflection component due to the application of the MLA structure.Type: GrantFiled: October 30, 2017Date of Patent: December 31, 2019Assignee: LG DISPLAY CO., LTD.Inventors: Young-Wook Kim, Hyun-Jong Noh, Seong-Han Hwang, Chi-Myung Ahn, Won-Hoe Koo, Ji-Hyang Jang
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Patent number: 10522789Abstract: Disclosed is a light emitting display device which facilitates to improve light-extraction efficiency of pixels, and to maximize light-extraction efficiency of each pixel, wherein the light emitting display device includes a substrate having a first area and a second area, a planarization coating layer prepared on the substrate and configured to have a first curve pattern prepared on the first area, and a second curve pattern prepared on the second area, and an emission device prepared on the first curve pattern and the second curve pattern, wherein a thickness of the planarization coating layer overlapping the first curve pattern is different from a thickness of the planarization coating layer overlapping the second curve pattern, and each of the first curve pattern and the second curve pattern includes a plurality of protruding portions having an aspect ratio of 0.4˜0.6.Type: GrantFiled: June 29, 2018Date of Patent: December 31, 2019Assignee: LG Display Co., Ltd.Inventors: Soo-Kang Kim, Won-Hoe Koo, Ji-Hyang Jang, So-Young Jo
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Patent number: 10516002Abstract: An organic light emitting display device includes a substrate including a plurality of pixel regions, a light absorption material layer in a white pixel region of the plurality of pixel regions and including a light absorption dye, an overcoat layer on the light absorption material layer, a micro-lens structure at a top surface of the overcoat layer, and an emitting diode on the micro-lens structure, wherein the light absorption dye has a main absorption wavelength of about 500 to 640 nm.Type: GrantFiled: August 29, 2018Date of Patent: December 24, 2019Assignee: LG DISPLAY CO., LTD.Inventors: So-Young Jo, Soo-Kang Kim, Won-Hoe Koo
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Publication number: 20190371768Abstract: A white LED module includes a circuit board, at least one first LED light source on the circuit board and emitting a first white light having a first color temperature, at least one second LED light source on the circuit board and emitting a second white light having a second color temperature, higher than the first color temperature, a wiring structure in the circuit board to selectively drive the at least one first LED light source and the at least one second LED light source, and a transparent encapsulant on the circuit board, to cover the at least one first LED light source and the at least one second LED light source. The transparent encapsulant includes a transparent resin and a light-scattering powder in the transparent resin.Type: ApplicationFiled: January 9, 2019Publication date: December 5, 2019Inventors: Jae Sung YOU, Yun Tae Hwang, Ho Young Song, Won Hoe Koo, Jae Chul Kim, Ho Sun Paek
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Publication number: 20190363220Abstract: A light emitting display device includes: a light emitting element that includes a light emitting layer between a first electrode and a second electrode; a wavelength conversion layer overlapping the light emitting element; and an uneven layer that includes a plurality of furrows between the light emitting element and the wavelength conversion layer, wherein a shortest distance between a bottom surface of the plurality of furrows and the wavelength conversion layer is 0.1 um or greater.Type: ApplicationFiled: August 6, 2019Publication date: November 28, 2019Applicant: LG Display Co., Ltd.Inventors: Soo-Kang KIM, Won-Hoe KOO, Ji-Hyang JANG, So-Young JO
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Publication number: 20190334126Abstract: Provided are an organic light-emitting diode (OLED) and an organic light-emitting device including the same. The OLED includes a first electrode, an organic emissive layer which includes a plurality of convex curves or a plurality of concave curves in a light-emitting region and of which a slope of an inclined plane of an upper region with respect to a horizontal line dividing a height of the plurality of convex curves into halves is greater than a slope of an inclined plane of a lower region thereof, and a second electrode provided on the organic emissive layer. Accordingly, the OLED and the organic light-emitting device including the same are capable of improving current efficiency.Type: ApplicationFiled: July 8, 2019Publication date: October 31, 2019Applicant: LG Display Co., Ltd.Inventors: Ji-Hyang JANG, So-Young JO, Won-Hoe KOO
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Patent number: 10424761Abstract: An electroluminescent display device includes a substrate including an emissive area and a non-emissive area, a plurality of protrusions over the substrate and in the emissive area, each of the plurality of protrusions spaced apart from each other with an air gap therebetween, a high-viscosity material layer on the plurality of protrusions and the air gaps, a first electrode on the high-viscosity material layer, an emitting layer on the first electrode, and a second electrode on the emitting layer.Type: GrantFiled: September 26, 2018Date of Patent: September 24, 2019Assignee: LG Display Co., Ltd.Inventors: Yong-Hoon Choi, Won-Hoe Koo
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Patent number: 10418520Abstract: A light emitting display device includes: a light emitting element that includes a light emitting layer between a first electrode and a second electrode; a wavelength conversion layer overlapping the light emitting element; and an uneven layer that includes a plurality of furrows between the light emitting element and the wavelength conversion layer, wherein a shortest distance between a bottom surface of the plurality of furrows and the wavelength conversion layer is 0.1 um or greater.Type: GrantFiled: June 29, 2018Date of Patent: September 17, 2019Assignee: LG Display Co., Ltd.Inventors: Soo-Kang Kim, Won-Hoe Koo, Ji-Hyang Jang, So-Young Jo
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Patent number: 10381601Abstract: Provided are an organic light-emitting diode (OLED) and an organic light-emitting device including the same. The OLED includes a first electrode, an organic emissive layer which includes a plurality of convex curves or a plurality of concave curves in a light-emitting region and of which a slope of an inclined plane of an upper region with respect to a horizontal line dividing a height of the plurality of convex curves into halves is greater than a slope of an inclined plane of a lower region thereof, and a second electrode provided on the organic emissive layer. Accordingly, the OLED and the organic light-emitting device including the same are capable of improving current efficiency.Type: GrantFiled: December 19, 2017Date of Patent: August 13, 2019Assignee: LG Display Co., Ltd.Inventors: Ji-Hyang Jang, So-Young Jo, Won-Hoe Koo