Patents by Inventor Yoon-Heung Tak
Yoon-Heung Tak 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: 11223026Abstract: An organic light emitting display panel includes a light emitting diode array substrate and an encapsulation substrate adhered to the light emitting array diode substrate by an adhesive film. The light emitting array diode substrate includes a driving thin film transistor formed on a substrate, an organic light emitting diode including a first electrode connected to the driving thin film transistor, an organic emission layer formed on the first electrode, and a second electrode formed on the organic emission layer, and first and second passivation layers formed on the second electrode. In this regard, the first passivation layer is formed of an organic compound having at least one of the structural formulae described in Formula 1 below: wherein R1, R2, R3, R4, R5, and R6 are each independently selected from substituted or unsubstituted C6-C40 aromatic groups.Type: GrantFiled: April 12, 2018Date of Patent: January 11, 2022Assignee: LG Display Co., Ltd.Inventors: Jeong-Dae Seo, Chang-Wook Han, Yoon-Heung Tak, Hyo-Seok Kim
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Publication number: 20180233699Abstract: An organic light emitting display panel includes a light emitting diode array substrate and an encapsulation substrate adhered to the light emitting array diode substrate by an adhesive film. The light emitting array diode substrate includes a driving thin film transistor formed on a substrate, an organic light emitting diode including a first electrode connected to the driving thin film transistor, an organic emission layer formed on the first electrode, and a second electrode formed on the organic emission layer, and first and second passivation layers formed on the second electrode. In this regard, the first passivation layer is formed of an organic compound having at least one of the structural formulae described in Formula 1 below: wherein R1, R2, R3, R4, R5, and R6 are each independently selected from substituted or unsubstituted C6-C40 aromatic groups.Type: ApplicationFiled: April 12, 2018Publication date: August 16, 2018Inventors: Jeong-Dae Seo, Chang-Wook Han, Yoon-Heung Tak, Hyo-Seok Kim
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Patent number: 9972805Abstract: An organic light emitting display panel includes a light emitting diode array substrate and an encapsulation substrate adhered to the light emitting array diode substrate by an adhesive film. The light emitting array diode substrate includes a driving thin film transistor formed on a substrate, an organic light emitting diode including a first electrode connected to the driving thin film transistor, an organic emission layer formed on the first electrode, and a second electrode formed on the organic emission layer, and first and second passivation layers formed on the second electrode. In this regard, the first passivation layer is formed of an organic compound having at least one of the structural formulae described in Formula 1 below: wherein R1, R2, R3, R4, R5, and R6 are each independently selected from substituted or unsubstituted C6-C40 aromatic groups.Type: GrantFiled: April 29, 2013Date of Patent: May 15, 2018Assignee: LG Display Co., Ltd.Inventors: Jeong-Dae Seo, Chang-Wook Han, Yoon-Heung Tak, Hyo-Seok Kim
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Patent number: 9431614Abstract: Discussed is an organic light emitting device that exhibits improved efficiency and driving voltage by applying a novel material facilitating charge generation to a charge generation layer. The charge generation layer contains a compound represented by the following formulae: wherein R1, R2, R3, R4, R5, R6, R7 and R8 are optionally substituted and are independently selected from an aromatic group having 6 to 20 carbon atoms, and R9 and R10 are independently selected from hydrogen, an optionally substituted aromatic ring having 6 to 20 carbon atoms and an optionally substituted heterocyclic compound having 3 to 17 carbon atoms and one or more elements of N, S and P.Type: GrantFiled: November 21, 2012Date of Patent: August 30, 2016Assignee: LG DISPLAY CO., LTD.Inventors: Jeong-Dae Seo, Chang-Wook Han, Yoon-Heung Tak, Hyo-Seok Kim, Eun-Ju Jeon, Hye-Seung Kang
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Patent number: 9304397Abstract: Disclosed is a method of manufacturing an organic light emitting display device. The method include forming a driving thin film transistor and passivation layer on a substrate, forming a bank layer at a boundary portion between adjacent sub-pixels, on the passivation layer, laminating a first photoresist film on the bank layer, forming a first photoresist pattern by irradiating IR light on the first photoresist film in an area except a first sub-pixel, depositing a first organic emission layer in the first sub-pixel area exposed by the first photoresist pattern, removing the first photoresist pattern, laminating a second photoresist film on the bank layer, forming a second photoresist pattern by irradiating IR light on the second photoresist film in an area except a second sub-pixel, depositing a second organic emission layer in the second sub-pixel area exposed by the second photoresist pattern, and removing the second photoresist pattern.Type: GrantFiled: December 26, 2012Date of Patent: April 5, 2016Assignee: LG Display Co., Ltd.Inventors: Wy-Yong Kim, Byung Chul Ahn, Gee Sung Chae, Jin Wuk Kim, Yoon Heung Tak
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Patent number: 9048204Abstract: An organic electroluminescent display device is disclosed which includes: a lower substrate including a first substrate defined into red, green and blue sub-pixel regions, first and second switching elements formed in the red and green sub-pixel regions, first and second anodes each connected to the first and second switching elements, and a first organic light emission layer entirely formed on the first substrate provided with the first and second anodes; and an upper substrate including a second substrate, red and green color filter layers formed on the second substrate corresponding to the red and green sub-pixel regions, a third switching element formed on the second substrate corresponding to the blue sub-pixel region, a third anode connected to the third switching element, and a second organic light emission layer entirely formed on the second substrate provided with the red and green color filter layers and the third anode.Type: GrantFiled: October 21, 2014Date of Patent: June 2, 2015Assignee: LG Display Co., Ltd.Inventors: Woo Chan Kim, Byung Chul Ahn, Hong Ki Park, Hyo Dae Bae, Yoon Heung Tak, Sung Goo Jung
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Patent number: 9040979Abstract: An organic electroluminescent display device is disclosed which includes a lower substrate including a first substrate defined into red, green and blue sub-pixel regions, first and second switching elements formed in the red and green sub-pixel regions, first and second anodes each connected to the first and second switching elements, and a first organic light emission layer entirely formed on the first substrate provided with the first and second anodes; and an upper substrate including a second substrate, red and green color filter layers formed on the second substrate corresponding to the red and green sub-pixel regions, a third switching element formed on the second substrate corresponding to the blue sub-pixel region, a third anode connected to the third switching element, and a second organic light emission layer entirely formed on the second substrate provided with the red and green color filter layers and the third anode.Type: GrantFiled: October 21, 2014Date of Patent: May 26, 2015Assignee: LG Display Co., Ltd.Inventors: Woo Chan Kim, Byung Chul Ahn, Hong Ki Park, Hyo Dae Bae, Yoon Heung Tak, Sung Goo Jung
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Publication number: 20150069369Abstract: An organic electroluminescent display device is disclosed which includes a lower substrate including a first substrate defined into red, green and blue sub-pixel regions, first and second switching elements formed in the red and green sub-pixel regions, first and second anodes each connected to the first and second switching elements, and a first organic light emission layer entirely formed on the first substrate provided with the first and second anodes; and an upper substrate including a second substrate, red and green color filter layers formed on the second substrate corresponding to the red and green sub-pixel regions, a third switching element formed on the second substrate corresponding to the blue sub-pixel region, a third anode connected to the third switching element, and a second organic light emission layer entirely formed on the second substrate provided with the red and green color filter layers and the third anode.Type: ApplicationFiled: October 21, 2014Publication date: March 12, 2015Applicant: LG Display Co., Ltd.Inventors: Woo Chan KIM, Byung Chul AHN, Hong Ki PARK, Hyo Dae BAE, Yoon Heung TAK, Sung Goo JUNG
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Publication number: 20150060834Abstract: An organic electroluminescent display device is disclosed which includes: a lower substrate including a first substrate defined into red, green and blue sub-pixel regions, first and second switching elements formed in the red and green sub-pixel regions, first and second anodes each connected to the first and second switching elements, and a first organic light emission layer entirely formed on the first substrate provided with the first and second anodes; and an upper substrate including a second substrate, red and green color filter layers formed on the second substrate corresponding to the red and green sub-pixel regions, a third switching element formed on the second substrate corresponding to the blue sub-pixel region, a third anode connected to the third switching element, and a second organic light emission layer entirely formed on the second substrate provided with the red and green color filter layers and the third anode.Type: ApplicationFiled: October 21, 2014Publication date: March 5, 2015Applicant: LG DISPLAY CO., LTD.Inventors: Woo Chan KIM, Byung Chul AHN, Hong Ki PARK, Hyo Dae BAE, Yoon Heung TAK, Sung Goo JUNG
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Patent number: 8946722Abstract: An organic light emitting display device with enhanced luminous efficiency and color viewing angle and a method of manufacturing the same are disclosed. The method includes forming a first electrode of each of red, green, blue and white sub-pixels on a substrate, forming a white organic common layer on the first electrodes, and forming a second electrode on the white organic common layer, wherein the first electrodes each includes multiple transparent conductive layers and is formed such that a thickness of the first electrode of each of two sub-pixels among the red, green, blue and white sub-pixels is greater than a thickness of the first electrode of each of the other two sub-pixels, and at least two layers excluding the lowermost layer among the multiple transparent conductive layers of each first electrode are formed to cover opposite sides of the lowermost layer.Type: GrantFiled: December 23, 2013Date of Patent: February 3, 2015Assignee: LG Display Co., Ltd.Inventors: Seung-Hyun Kim, Byung-Chul Ahn, Chang-Wook Han, Hee-Suk Pang, Hong-Seok Choi, Yoon-Heung Tak, Mi-Young Han, Tae-Shick Kim
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Patent number: 8928222Abstract: A an organic electroluminescent display device includes an array substrate including a driving thin film transistor in a pixel region on a first substrate; an opposing substrate including an organic electroluminescent diode in the pixel region on a second substrate; an adhesive layer filling a space between the array substrate and the opposing substrate; and a connection spacer to electrically connect the organic electroluminescent diode with the driving thin film transistor.Type: GrantFiled: July 9, 2009Date of Patent: January 6, 2015Assignee: LG Display Co., Ltd.Inventors: Myung-Seop Kim, Jeong-Dae Seo, Jong-Moo Lee, Hyun-Ju Choi, Chang-Wook Han, Yoon-Heung Tak
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Patent number: 8921860Abstract: An organic light emitting display device is provided to avoid color change due to a viewing direction. The organic light emitting display includes a light compensation layer having a refractive index different than that of an insulating layer. The organic light emitting display may be disposed at the side to which light emitted from an organic light emitting layer is entered to change the path and phase of light, thereby coinciding cavity peak phases for each wavelength of white light emitted from an organic light emitting unit.Type: GrantFiled: July 13, 2012Date of Patent: December 30, 2014Assignee: LG Display Co., Ltd.Inventors: Shin-Han Kim, Byung-Chul Ahn, Yoon-Heung Tak, Chang-Wook Han, Do-Hyung Kim, Jae-Man Lee, Hong-Seok Choi, Sung-Joon Bae, Seung-Ryong Joung
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Patent number: 8895967Abstract: An organic electroluminescent display device is disclosed which includes: a lower substrate including a first substrate defined into red, green and blue sub-pixel regions, first and second switching elements formed in the red and green sub-pixel regions, first and second anodes each connected to the first and second switching elements, and a first organic light emission layer entirely formed on the first substrate provided with the first and second anodes; and an upper substrate including a second substrate, red and green color filter layers formed on the second substrate corresponding to the red and green sub-pixel regions, a third switching element formed on the second substrate corresponding to the blue sub-pixel region, a third anode connected to the third switching element, and a second organic light emission layer entirely formed on the second substrate provided with the red and green color filter layers and the third anode.Type: GrantFiled: October 25, 2012Date of Patent: November 25, 2014Assignee: LG Display Co., Ltd.Inventors: Woo Chan Kim, Byung Chul Ahn, Hong Ki Park, Hyo Dae Bae, Yoon Heung Tak, Sung Goo Jung
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Patent number: 8847216Abstract: Disclosed is an organic light emitting display device. The organic light emitting display device includes a substrate, a thin film transistor formed on the substrate, a first electrode formed on the thin film transistor, an organic emission layer, and a second electrode formed on the organic emission layer. The organic emission layer includes a first stack that includes a first emission layer formed on the first electrode to emit first color light, a second stack that includes a second emission layer formed on the first electrode to emit second color light, and a charge generation layer formed between the first and second stacks.Type: GrantFiled: December 21, 2012Date of Patent: September 30, 2014Assignee: LG Display Co., Ltd.Inventors: Hwa Kyung Kim, Chang Wook Han, Do Hyung Kim, Hongseok Choi, Yoon Heung Tak, Ki-Woog Song, Mi-Young Han, Jimin Kim, Hye Min Oh
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Publication number: 20140183499Abstract: An organic light emitting display device with enhanced luminous efficiency and color viewing angle and a method of manufacturing the same are disclosed. The method includes forming a first electrode of each of red, green, blue and white sub-pixels on a substrate, forming a white organic common layer on the first electrodes, and forming a second electrode on the white organic common layer, wherein the first electrodes each includes multiple transparent conductive layers and is formed such that a thickness of the first electrode of each of two sub-pixels among the red, green, blue and white sub-pixels is greater than a thickness of the first electrode of each of the other two sub-pixels, and at least two layers excluding the lowermost layer among the multiple transparent conductive layers of each first electrode are formed to cover opposite sides of the lowermost layer.Type: ApplicationFiled: December 23, 2013Publication date: July 3, 2014Applicant: LG Display Co., Ltd.Inventors: Seung-Hyun Kim, Byung-Chul Ahn, Chang-Wook Han, Hee-Suk Pang, Hong-Seok Choi, Yoon-Heung Tak, Mi-Young Han, Tae-Shick Kim
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Patent number: 8766292Abstract: Provided are a method of manufacturing an organic light emitting display device and an organic light emitting display device manufactured by the method. The method includes calculating a peak-luminance current density for each of a red sub-pixel, a blue sub-pixel, a green sub-pixel, and a white sub-pixel, calculating an average use current density for each of the red sub-pixel, blue sub-pixel, green sub-pixel, and white sub-pixel; determining a size of each sub-pixel with the peak-luminance current density and the average use current density, and forming the sub-pixels with the determined sizes of the respective sub-pixels. The present invention sets the size of each sub-pixel in consideration of a peak-luminance current density and an average use current density, thus easily achieving the peak luminance and enhancing the color-coordinate life.Type: GrantFiled: December 6, 2012Date of Patent: July 1, 2014Assignee: LG Display Co., Ltd.Inventors: Hwa Kyung Kim, Byung Chul Ahn, Chang Wook Han, Woo Jin Nam, Hong Seok Choi, Yoon Heung Tak, Shinji Takasugi
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Publication number: 20140117322Abstract: An organic light emitting display panel includes a light emitting diode array substrate and an encapsulation substrate adhered to the light emitting array diode substrate by an adhesive film. The light emitting array diode substrate includes a driving thin film transistor formed on a substrate, an organic light emitting diode including a first electrode connected to the driving thin film transistor, an organic emission layer formed on the first electrode, and a second electrode formed on the organic emission layer, and first and second passivation layers formed on the second electrode. In this regard, the first passivation layer is formed of an organic compound having at least one of the structural formulae described in Formula 1 below: wherein R1, R2, R3, R4, R5, and R6 are each independently selected from substituted or unsubstituted C6-C40 aromatic groups.Type: ApplicationFiled: April 29, 2013Publication date: May 1, 2014Applicant: LG DASPLAY CO., LTD.Inventors: Jeong-Dae Seo, Chang-Wook Han, Yoon-Heung Tak, Hyo-Seok Kim
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Publication number: 20140087312Abstract: Disclosed is a method of manufacturing an organic light emitting display device. The method include forming a driving thin film transistor and passivation layer on a substrate, forming a bank layer at a boundary portion between adjacent sub-pixels, on the passivation layer, laminating a first photoresist film on the bank layer, forming a first photoresist pattern by irradiating IR light on the first photoresist film in an area except a first sub-pixel, depositing a first organic emission layer in the first sub-pixel area exposed by the first photoresist pattern, removing the first photoresist pattern, laminating a second photoresist film on the bank layer, forming a second photoresist pattern by irradiating IR light on the second photoresist film in an area except a second sub-pixel, depositing a second organic emission layer in the second sub-pixel area exposed by the second photoresist pattern, and removing the second photoresist pattern.Type: ApplicationFiled: December 26, 2012Publication date: March 27, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Wy-Yong KIM, Byung Chul AHN, Gee Sung CHAE, Jin Wuk KIM, Yoon Heung TAK
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Publication number: 20130015450Abstract: An organic light emitting display device is provided to avoid color change due to a viewing direction. The organic light emitting display includes a light compensation layer having a refractive index different than that of an insulating layer. The organic light emitting display may be disposed at the side to which light emitted from an organic light emitting layer is entered to change the path and phase of light, thereby coinciding cavity peak phases for each wavelength of white light emitted from an organic light emitting unit.Type: ApplicationFiled: July 13, 2012Publication date: January 17, 2013Inventors: Shin-Han Kim, Byung-Chul Ahn, Yoon-Heung Tak, Chang-Wook Han, Do-Hyung Kim, Jae-Man Lee, Hong-Seok Choi, Sung-Joon Bae, Seung-Ryong Joung
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Patent number: RE47544Abstract: Provided are a method of manufacturing an organic light emitting display device and an organic light emitting display device manufactured by the method. The method includes calculating a peak-luminance current density for each of a red sub-pixel, a blue sub-pixel, a green sub-pixel, and a white sub-pixel, calculating an average use current density for each of the red sub-pixel, blue sub-pixel, green sub-pixel, and white sub-pixel; determining a size of each sub-pixel with the peak-luminance current density and the average use current density, and forming the sub-pixels with the determined sizes of the respective sub-pixels. The present invention sets the size of each sub-pixel in consideration of a peak-luminance current density and an average use current density, thus easily achieving the peak luminance and enhancing the color-coordinate life.Type: GrantFiled: June 30, 2016Date of Patent: July 30, 2019Assignee: LG Display Co., Ltd.Inventors: Hwa Kyung Kim, Byung Chul Ahn, Chang Wook Han, Woo Jin Nam, Hong Seok Choi, Yoon Heung Tak, Shinji Takasugi