Patents by Inventor Jeonghaeng Heo
Jeonghaeng Heo 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: 11682348Abstract: The present disclosure provides a display panel and a display method for use in the display panel. The display panel includes: a display region, the display region comprising a first display region and a second display region, the first display region comprising a transparent sub-display region, the transparent sub-display region having a light transmittance higher than that of the second display region; and a first light emission controller and a second light emission controller, the first light emission controller being configured to provide a light emission control signal to a plurality of pixel rows of the first display region, the second light emission controller being configured to provide a light emission control signal to a plurality of pixel rows of the second display region.Type: GrantFiled: September 23, 2021Date of Patent: June 20, 2023Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Rongjian Yan, Jeonghaeng Heo, Zhaowei Yu
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Publication number: 20220301503Abstract: The present disclosure provides a display panel and a display method for use in the display panel. The display panel includes: a display region, the display region comprising a first display region and a second display region, the first display region comprising a transparent sub-display region, the transparent sub-display region having a light transmittance higher than that of the second display region; and a first light emission controller and a second light emission controller, the first light emission controller being configured to provide a light emission control signal to a plurality of pixel rows of the first display region, the second light emission controller being configured to provide a light emission control signal to a plurality of pixel rows of the second display region.Type: ApplicationFiled: September 23, 2021Publication date: September 22, 2022Inventors: Rongjian YAN, Jeonghaeng HEO, Zhaowei YU
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Patent number: 10249849Abstract: An organic light emitting display device includes a first electrode and a second electrode on a substrate, the first electrode being opposite to the second electrode; and at least one emission part between the first electrode and the second electrode, the at least one emission part including at least one organic layer, wherein the at least one organic layer comprises a peak wavelength of electroluminescence (EL) spectrum (PWES) structure where a moving range of a peak wavelength of an EL spectrum emitted from the at least one emission part is set.Type: GrantFiled: December 1, 2017Date of Patent: April 2, 2019Assignee: LG DISPLAY CO., LTD.Inventors: Ki-Woog Song, JeongHaeng Heo, Taeil Kum, Seung Kim, Heedong Choi, HyungJune Kim
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Patent number: 10020349Abstract: Provided is an organic light emitting device. The organic light emitting device includes a plurality of light emitting units laminated between a first electrode and a second electrode and each including an organic emitting layer, and a charge generation layer between the light emitting units. Further, the charge generation layer includes an N-type charge generation layer disposed to be in direct contact with an organic emitting layer of the adjacent light emitting unit and HOMO levels of the N-type charge generation layer and the organic emitting layer are regulated. Thus, a color change rate based on a viewing angle can be improved, and efficiency and a lifetime of the organic light emitting device can be improved.Type: GrantFiled: May 17, 2016Date of Patent: July 10, 2018Assignee: LG Display Co., Ltd.Inventors: JeongHaeng Heo, Jaeil Song, SangGun Lee, SoYeon Ahn
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Publication number: 20180102503Abstract: An organic light emitting display device includes a first electrode and a second electrode on a substrate, the first electrode being opposite to the second electrode; and at least one emission part between the first electrode and the second electrode, the at least one emission part including at least one organic layer, wherein the at least one organic layer comprises a peak wavelength of electroluminescence (EL) spectrum (PWES) structure where a moving range of a peak wavelength of an EL spectrum emitted from the at least one emission part is set.Type: ApplicationFiled: December 1, 2017Publication date: April 12, 2018Applicant: LG DISPLAY CO., LTD.Inventors: Ki-Woog Song, JeongHaeng Heo, Taeil Kum, Seung Kim, Heedong Choi, HyungJune Kim
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Patent number: 9859529Abstract: Discussed is an organic light emitting display device for reducing a color defect or a color difference which occurs in the front or side of the organic light emitting display device. The organic light emitting display device can include a first electrode, a second electrode and an organic layer between the first electrode and the second electrode, the organic layer including at least one emission part. The organic layer is configured for a peak wavelength of an electroluminescence (EL) spectrum of the organic light emitting display device emitted from the at least one emission part to have a range from 10 nm less a predetermined peak wavelength to 10 nm more than the predetermined peak wavelength.Type: GrantFiled: November 12, 2015Date of Patent: January 2, 2018Assignee: LG DISPLAY CO., LTD.Inventors: Ki-Woog Song, JeongHaeng Heo, Taeil Kum, Seung Kim, Heedong Choi, HyungJune Kim
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Patent number: 9761823Abstract: An organic light emitting display device is discussed. The organic light emitting display device in one embodiment includes at least one light emitting layer between an anode and a cathode, and an electron transport layer between the at least one light emitting layer and the cathode. The electron transport layer may include a first electron transport material for blocking holes from the light emitting layer to the electron transport layer, and a second electron transport material for assisting in a transfer of electrons to the light emitting layer, wherein the first electron transport material and the second electron transport material have different triplet exciton energy levels and different electron mobilities.Type: GrantFiled: October 9, 2015Date of Patent: September 12, 2017Assignee: LG DISPLAY CO., LTD.Inventors: Seongsu Jeon, Jeonghaeng Heo, Seung Kim
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Patent number: 9590201Abstract: An organic light emitting diode display has uniform light emission efficiency over the entire pixel area. The organic light emitting diode display comprises: a substrate having a red pixel area, a green pixel area, and a blue pixel area arrayed in a matrix; an anode electrode in the red, green, and blue pixel areas; a hole injection layer including an organic material with an extinction coefficient less than about 0.13 and on the anode electrode covering a whole surface of the substrate; an emission layer on the hole injection layer; an electron injection layer on a whole surface of the emission layer; and a cathode electrode on a whole surface of the electron injection layer.Type: GrantFiled: September 2, 2014Date of Patent: March 7, 2017Assignee: LG DISPLAY CO., LTD.Inventors: Jeonghaeng Heo, Taesun Yoo, Taeshick Kim, Seung Kim
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Publication number: 20160343776Abstract: Provided is an organic light emitting device. The organic light emitting device includes a plurality of light emitting units laminated between a first electrode and a second electrode and each including an organic emitting layer, and a charge generation layer between the light emitting units. Further, the charge generation layer includes an N-type charge generation layer disposed to be in direct contact with an organic emitting layer of the adjacent light emitting unit and HOMO levels of the N-type charge generation layer and the organic emitting layer are regulated. Thus, a color change rate based on a viewing angle can be improved, and efficiency and a lifetime of the organic light emitting device can be improved.Type: ApplicationFiled: May 17, 2016Publication date: November 24, 2016Inventors: JeongHaeng HEO, Jaeil SONG, SangGun LEE, SoYeon AHN
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Patent number: 9406908Abstract: Disclosed is an organic light emitting device comprising an anode; a cathode; and a plurality of stacks formed between the anode and the cathode. The plurality of stacks respectively emit their respective light of colors different from one another, wherein the plurality of stacks include a stack emitting blue light and a stack emitting mixed light of blue light and yellow-green to red light. Because the organic light emitting device includes a stack emitting blue light and a stack emitting mixed light of yellow-green to red light and blue light, blue light having a relatively low efficiency may be emitted from the two stacks, whereby overall light emitting efficiency is improved.Type: GrantFiled: June 26, 2014Date of Patent: August 2, 2016Assignee: LG Display Co., Ltd.Inventors: Shinhan Kim, JeongHaeng Heo, Taeshick Kim
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Publication number: 20160141555Abstract: Discussed is an organic light emitting display device for reducing a color defect or a color difference which occurs in the front or side of the organic light emitting display device. The organic light emitting display device can include a first electrode, a second electrode and an organic layer between the first electrode and the second electrode, the organic layer including at least one emission part. The organic layer is configured for a peak wavelength of an electroluminescence (EL) spectrum of the organic light emitting display device emitted from the at least one emission part to have a range from 10 nm less a predetermined peak wavelength to 10 nm more than the predetermined peak wavelength.Type: ApplicationFiled: November 12, 2015Publication date: May 19, 2016Applicant: LG DISPLAY CO., LTD.Inventors: Ki-Woog SONG, JeongHaeng HEO, Taeil KUM, Seung KIM, Heedong CHOI, HyungJune KIM
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Publication number: 20160104854Abstract: An organic light emitting display device is discussed. The organic light emitting display device in one embodiment includes at least one light emitting layer between an anode and a cathode, and an electron transport layer between the at least one light emitting layer and the cathode. The electron transport layer may include a first electron transport material for blocking holes from the light emitting layer to the electron transport layer, and a second electron transport material for assisting in a transfer of electrons to the light emitting layer, wherein the first electron transport material and the second electron transport material have different triplet exciton energy levels and different electron mobilities.Type: ApplicationFiled: October 9, 2015Publication date: April 14, 2016Applicant: LG DISPLAY CO., LTD.Inventors: Seongsu JEON, Jeonghaeng HEO, Seung KIM
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Publication number: 20150060829Abstract: An organic light emitting diode display has uniform light emission efficiency over the entire pixel area. The organic light emitting diode display comprises: a substrate having a red pixel area, a green pixel area, and a blue pixel area arrayed in a matrix; an anode electrode in the red, green, and blue pixel areas; a hole injection layer including an organic material with an extinction coefficient less than about 0.13 and on the anode electrode covering a whole surface of the substrate; an emission layer on the hole injection layer; an electron injection layer on a whole surface of the emission layer; and a cathode electrode on a whole surface of the electron injection layer.Type: ApplicationFiled: September 2, 2014Publication date: March 5, 2015Inventors: Jeonghaeng HEO, Taesun YOO, Taeshick KIM, Seung KIM
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Publication number: 20150001506Abstract: Disclosed is an organic light emitting device comprising an anode; a cathode; and a plurality of stacks formed between the anode and the cathode. The plurality of stacks respectively emit their respective light of colors different from one another, wherein the plurality of stacks include a stack emitting blue light and a stack emitting mixed light of blue light and yellow-green to red light. Because the organic light emitting device includes a stack emitting blue light and a stack emitting mixed light of yellow-green to red light and blue light, blue light having a relatively low efficiency may be emitted from the two stacks, whereby overall light emitting efficiency is improved.Type: ApplicationFiled: June 26, 2014Publication date: January 1, 2015Inventors: Shinhan KIM, JeongHaeng HEO, Taeshick KIM
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Patent number: 8378362Abstract: An organic light emitting diode display and a method of manufacturing the same are disclosed. The organic light emitting diode display includes a substrate, a first electrode positioned on the substrate, an organic light emitting layer positioned on the first electrode, and a second electrode positioned on the organic light emitting layer. The organic light emitting layer includes an inorganic oxide layer between a light emitting layer and a common layer.Type: GrantFiled: May 13, 2010Date of Patent: February 19, 2013Assignee: LG Display Co., Ltd.Inventors: Jeonghaeng Heo, Hyunsuk Kim, Jinho Park
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Publication number: 20110031511Abstract: An organic light emitting diode display and a method of manufacturing the same are disclosed. The organic light emitting diode display includes a substrate, a first electrode positioned on the substrate, an organic light emitting layer positioned on the first electrode, and a second electrode positioned on the organic light emitting layer. The organic light emitting layer includes an inorganic oxide layer between a light emitting layer and a common layer.Type: ApplicationFiled: May 13, 2010Publication date: February 10, 2011Inventors: Jeonghaeng HEO, Hyunsuk Kim, Jinho Park