Patents by Inventor Ji-Hyang JANG
Ji-Hyang JANG 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: 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: 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: 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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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: 20200006709Abstract: An organic light emitting diode display device includes a substrate, an overcoating layer on the substrate and including a plurality of convex portions and a plurality of concave portions, a first electrode on the overcoating layer, a light emitting layer on the first electrode and including a first emitting material layer, and a second electrode on the light emitting layer, wherein the first emitting material layer in the plurality of convex portions is separated from the second electrode by a first distance, and the first emitting material layer in the plurality of concave portions is separated from the second electrode by a second distance different from the first distance.Type: ApplicationFiled: June 27, 2019Publication date: January 2, 2020Applicant: LG DISPLAY CO., LTD.Inventors: Dong-Min SIM, Ji-Hyang JANG, Jin-Tae KIM
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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: 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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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: 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
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Patent number: 10355234Abstract: An organic light emitting diode includes: a first electrode including a concave part or a convex part; an organic light emitting layer disposed on the first electrode; and a second electrode disposed on the organic light emitting layer.Type: GrantFiled: May 11, 2018Date of Patent: July 16, 2019Assignee: LG Display Co., Ltd.Inventors: Yong-Hoon Choi, Won-Hoe Koo, Jin-Tae Kim, Soo-Kang Kim, Ji-Hyang Jang
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Publication number: 20190189966Abstract: An organic light emitting diode display device includes: a substrate including a plurality of pixel regions which each include an emission region and a non-emission region around the emission region; a plurality of scattering portions disposed on the substrate, corresponding to the emission region, and spaced apart from each other; a first overcoat layer disposed on the substrate having the plurality of scattering portions and including a plurality of concave portions which respectively correspond to the plurality of scattering portions; a first electrode disposed on the first overcoat layer in each of the plurality of pixel regions; and an organic light emitting layer and a second electrode sequentially disposed on the first electrode.Type: ApplicationFiled: December 6, 2018Publication date: June 20, 2019Inventors: Ji-Hyang JANG, So-Young JO, Won-Hoe KOO
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Publication number: 20190181188Abstract: An organic light emitting diode display (OLED) is disclosed. The disclosed OLED includes a substrate including a plurality of sub-pixels, each sub-pixel comprising a display area and a non-display area surrounding the display area, the display area comprising a first display area at a center region of the display area and a second display area surrounding the first display area; a first electrode formed in the display area; an organic light emitting layer formed on the first electrode and extending to the non-display area; a third electrode formed on a portion of the organic light emitting layer in the first display area; and a second electrode formed on the third electrode and the organic light emitting layer, wherein the first and third electrodes are able to achieve a micro cavity effect.Type: ApplicationFiled: December 5, 2018Publication date: June 13, 2019Applicant: LG Display Co., Ltd.Inventors: Woo-Ram YOUN, Ji-Hyang JANG
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Publication number: 20190165323Abstract: An electroluminescent display device comprises a substrate; a thin film transistor disposed on the substrate; an overcoat layer disposed on the thin film transistor; and a light-emitting diode electrically connected to the thin film transistor through the overcoat layer, wherein the light-emitting diode includes a first electrode, a light-emitting layer on the first electrode and a second electrode on the light-emitting layer, and an emissive area is an area in which the light-emitting layer emits light by the first electrode or the second electrode, wherein the overcoat layer includes a micro lens at a position corresponding to the emissive area, and the light-emitting diode conforms to a morphology of the micro lens, and wherein the first electrode includes a first region and a second region, the first region comprises an electrode layer, and the second region includes the electrode layer and an electrode pattern disposed under the electrode layer.Type: ApplicationFiled: November 20, 2018Publication date: May 30, 2019Inventors: So-Young JO, Ji-Hyang JANG, Min-Geun CHOI, Woo-Ram YOUN
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Publication number: 20190096976Abstract: An electroluminescent device includes a substrate which has a subpixel including a main subpixel and an auxiliary subpixel; a first thin film transistor and a second thin film transistor disposed on the substrate, the first thin film transistor corresponding to the main subpixel and the second thin film transistor corresponding to the auxiliary subpixel; an overcoat layer on the first and second thin film transistors; a first bottom electrode and a second bottom electrode on the overcoat layer, the first bottom electrode corresponding to the main subpixel and the second bottom electrode corresponding to the auxiliary subpixel; a light-emitting layer on the first bottom electrode and the second bottom electrode; and a top electrode on the light-emitting layer, wherein the main subpixel and the auxiliary subpixel have different color temperatures.Type: ApplicationFiled: September 18, 2018Publication date: March 28, 2019Applicant: LG Display Co., Ltd.Inventors: Ji-Hyang JANG, Won-Hoe KOO, Min-Geun CHOI
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Publication number: 20190006626Abstract: 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: June 29, 2018Publication date: January 3, 2019Applicant: LG Display Co., Ltd.Inventors: Soo-Kang KIM, Won-Hoe KOO, Ji-Hyang JANG, So-Young JO
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Publication number: 20190006557Abstract: 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: June 29, 2018Publication date: January 3, 2019Applicant: LG Display Co., Ltd.Inventors: Soo-Kang KIM, Won-Hoe KOO, Ji-Hyang JANG, So-Young JO
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Publication number: 20180261794Abstract: An organic light emitting diode includes: a first electrode including a concave part or a convex part; an organic light emitting layer disposed on the first electrode; and a second electrode disposed on the organic light emitting layer.Type: ApplicationFiled: May 11, 2018Publication date: September 13, 2018Applicant: LG Display Co., Ltd.Inventors: YONG-HOON CHOI, WON-HOE KOO, JIN-TAE KIM, SOO-KANG KIM, JI-HYANG JANG