Patents by Inventor Seon-Ah Cho
Seon-Ah Cho 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: 10831056Abstract: An exemplary embodiment of the present invention provides a display device including: a thin film transistor array panel; an anti-reflective layer overlapping the thin film transistor array panel; and a color conversion display panel positioned between the thin film transistor array panel and the anti-reflective layer, wherein: the color conversion display panel may include a color conversion layer including a semiconductor nanocrystal and a transmissive layer; the anti-reflective layer may include an adhesive layer positioned on the color conversion display panel, a low-reflective layer overlapping the adhesive layer, and a base film positioned between the adhesive layer and the low-reflective layer. A dye is present in one of the layers of the anti-reflective layer.Type: GrantFiled: May 21, 2018Date of Patent: November 10, 2020Assignee: Samsung Display Co., Ltd.Inventors: Ki Chul Shin, Seon-Ah Cho
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Patent number: 10551676Abstract: A display apparatus includes an optical member disposed on a display panel. The optical member includes a linear polarizer and a ?/4 phase retarder overlapping with green and red pixel areas and not overlapping with a blue pixel area.Type: GrantFiled: November 30, 2017Date of Patent: February 4, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seon-ah Cho, Kyunghwan Jeon
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Patent number: 10336189Abstract: A polarizer plate includes a base film, an adhesive layer disposed on one surface of the base film, a polarizer protection film disposed on one surface of the adhesive layer, a polarizer disposed on one surface of the polarizer protection film, and a cutting line formed perpendicular to the surface of the base film and configured to divide the polarizer protection film and the polarizer into separate regions.Type: GrantFiled: June 5, 2015Date of Patent: July 2, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sang Jae Kim, Kwang Hyun Kim, Seon Ah Cho
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Publication number: 20190113799Abstract: An exemplary embodiment of the present invention provides a display device including: a thin film transistor array panel; an anti-reflective layer overlapping the thin film transistor array panel; and a color conversion display panel positioned between the thin film transistor array panel and the anti-reflective layer, wherein: the color conversion display panel may include a color conversion layer including a semiconductor nanocrystal and a transmissive layer; the anti-reflective layer may include an adhesive layer positioned on the color conversion display panel, a low-reflective layer overlapping the adhesive layer, and a base film positioned between the adhesive layer and the low-reflective layer. A dye is present in one of the layers of the anti-reflective layer.Type: ApplicationFiled: May 21, 2018Publication date: April 18, 2019Inventors: Ki Chul SHIN, Seon-Ah CHO
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Cholesteric liquid crystal reflective polarizing plate and liquid crystal display including the same
Patent number: 10216040Abstract: A cholesteric liquid crystal reflective polarizing plate includes a cholesteric liquid crystal layer and a ?/4 compensation layer disposed on the cholesteric liquid crystal layer. The cholesteric liquid crystal layer includes a first left-handed circularly polarizing portion which extends in a first direction that include a left-handed cholesteric liquid crystal material, and a first right-handed circularly polarizing portion which extends in the first direction adjacent to first left-handed circularly polarizing portion and that includes a right-handed cholesteric liquid crystal material. The ?/4 compensation layer includes a first ?/4 compensation pattern which extends in the first direction and overlapping the first left-handed circularly polarizing portion, and a second ?/4 compensation pattern which extends in the first direction adjacent to the first ?/4 compensation pattern and overlaps the first right-handed circularly polarizing portion.Type: GrantFiled: May 29, 2015Date of Patent: February 26, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Ji Hye Kim, Kwang Hyun Kim, Sang Jae Kim, Teck Soo Kim, Gwan Young Na, Hyoung Joo Lee, Seon Ah Cho, Hyo Sung Hong -
Patent number: 10074504Abstract: A liquid crystal display device that includes an array substrate, an opposite substrate and a liquid crystal display layer is described. The array substrate includes a pixel electrode and a lower alignment layer. The pixel electrode has a plurality of slit portions extending in different directions. The lower alignment layer includes a reactive mesogen (RM) diamine is formed on the pixel electrode to induce an alignment direction of the liquid crystal molecules. An upper alignment layer is formed on a common electrode of the opposite substrate. The RM is cured at surfaces of the lower and upper alignment layers in response to ultraviolet (UV) light, so that liquid crystal molecules have a pretilt angle. Therefore, the aperture ratio and the response time may be improved, and afterimages may be decreased, so that display quality may be improved.Type: GrantFiled: January 13, 2015Date of Patent: September 11, 2018Assignee: Samsung Display Co., Ltd.Inventors: Keun-Chan Oh, Jae-Jin Lyu, Ji-Won Sohn, Seon-Ah Cho
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Patent number: 10073297Abstract: A liquid crystal display includes a liquid crystal display panel having a first substrate and a second substrate. An upper polarizer is disposed on an outer surface of the first substrate. A viewing angle control film is disposed on the upper polarizer. The viewing angle control film includes a polarizing layer having a transmission axis substantially parallel to a transmission axis of the upper polarizer and a phase retardation layer including a birefringence material having an optical axis with a poloidal angle of about 40 degrees to about 75 degrees.Type: GrantFiled: April 9, 2015Date of Patent: September 11, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hee Wook Do, Seon-Ah Cho
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Patent number: 10067376Abstract: A reflective display device including: a reflection plate; a liquid crystal layer disposed on the reflection plate, the liquid crystal layer including a liquid crystal aligned vertically in an initial alignment state, a first phase delay layer disposed on the liquid crystal layer; a reflective polarizing element disposed on the first phase delay layer; and an absorptive polarizing element disposed on the reflective polarizing element, wherein external light incident on the absorptive polarizing element is in an unpolarized state.Type: GrantFiled: July 17, 2017Date of Patent: September 4, 2018Assignee: Samsung Display Co., Ltd.Inventors: Seon Ah Cho, Young Jin Park
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Publication number: 20180157086Abstract: A display apparatus includes an optical member disposed on a display panel. The optical member includes a linear polarizer and a ?/4 phase retarder overlapping with green and red pixel areas and not overlapping with a blue pixel area.Type: ApplicationFiled: November 30, 2017Publication date: June 7, 2018Inventors: Seon-ah CHO, Kyunghwan JEON
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Patent number: 9971192Abstract: A display panel includes a first substrate, a second substrate facing the first substrate, a liquid crystal layer interposed between the first substrate and the second substrate, a first transparent conductive pattern disposed on a surface of the first substrate and including a plurality of openings, and a first polarizing member combined with the first transparent conductive pattern. The display panel may reduce bending due to contraction of the first polarizing member including a drawn polarizing layer. Furthermore, static electricity generated in the second substrate may be discharged thereby improving reliability of a display device including the display panel.Type: GrantFiled: October 24, 2014Date of Patent: May 15, 2018Assignee: Samsung Display Co., Ltd.Inventors: Hyoung-Joo Lee, Kwang-Hyun Kim, Sang-Jae Kim, Gwan-Young Na, Seon-Ah Cho
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Publication number: 20180101060Abstract: A reflective display device including: a reflection plate; a liquid crystal layer disposed on the reflection plate, the liquid crystal layer including a liquid crystal aligned vertically in an initial alignment state, a first phase delay layer disposed on the liquid crystal layer; a reflective polarizing element disposed on the first phase delay layer; and an absorptive polarizing element disposed on the reflective polarizing element, wherein external light incident on the absorptive polarizing element is in an unpolarized state.Type: ApplicationFiled: July 17, 2017Publication date: April 12, 2018Inventors: Seon Ah CHO, Young Jin PARK
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Patent number: 9791742Abstract: A liquid crystal display device includes a liquid crystal display panel which includes an array substrate including a pixel electrode, a gate line extending in a first direction and crossing the pixel electrode, and a data line extending in a second direction substantially perpendicular to the first direction, an opposing substrate including a common electrode in which a slit extending in the first direction and overlapping the gate line is defined, and a liquid crystal layer between the array substrate and the opposing substrate, and a light diffusion film which is disposed on the liquid crystal display panel and includes a plurality of low-refractive line members which respectively extends in the first direction and arranged in the second direction.Type: GrantFiled: August 8, 2014Date of Patent: October 17, 2017Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seon-Ah Cho, Sang-Jae Kim, Hyoung-Joo Lee
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Patent number: 9625762Abstract: Disclosed is a liquid crystal display device, including: first and second substrates, which are spaced apart from each other by a predetermined interval while facing each other; a reflective polarizing plate disposed under the first substrate, and including a first refractive index layer and a second refractive index layer, which have different refractive indexes and are repeatedly stacked; first and second compensation layers sequentially stacked on the second substrate, and an upper polarizing plate including a polarizing layer formed on the second compensation layer; and a liquid crystal layer formed between the first and second substrates.Type: GrantFiled: May 18, 2015Date of Patent: April 18, 2017Assignee: Samsung Display Co., Ltd.Inventors: Gwan-Young Na, Kwang-Hyun Kim, Sang-Jae Kim, Ji-Hye Kim, Teck-Soo Kim, Hyoung-Joo Lee, Seon-Ah Cho
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Patent number: 9436034Abstract: A display panel includes a first substrate, a second substrate, a liquid crystal layer, a first polarizer, a second polarizer and a viewing angle control layer. The second substrate faces the first substrate. A liquid crystal layer is disposed between the first substrate and the second substrate. A first polarizer is disposed on a lower surface of the first substrate and includes a first polarizing layer and a second polarizing layer stacked on each other. A second polarizer is disposed on an upper surface of the second substrate. A viewing angle control layer is disposed on the first polarizer and is configured to control a viewing angle of a column direction of the display panel.Type: GrantFiled: September 4, 2013Date of Patent: September 6, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sang-Jae Kim, Boo-Kan Ki, Ji-Hye Kim, Hee-Wook Do, Jae-Won Park, Duck-Jong Suh, Jung-Hun Lee, Hyoung-Joo Lee, Seon-Ah Cho, Hyo-Sung Hong
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CHOLESTERIC LIQUID CRYSTAL REFLECTIVE POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME
Publication number: 20160223730Abstract: A cholesteric liquid crystal reflective polarizing plate includes a cholesteric liquid crystal layer and a ?/4 compensation layer disposed on the cholesteric liquid crystal layer. The cholesteric liquid crystal layer includes a first left-handed circularly polarizing portion which extends in a first direction that include a left-handed cholesteric liquid crystal material, and a first right-handed circularly polarizing portion which extends in the first direction adjacent to first left-handed circularly polarizing portion and that includes a right-handed cholesteric liquid crystal material. The ?/4 compensation layer includes a first ?/4 compensation pattern which extends in the first direction and overlapping the first left-handed circularly polarizing portion, and a second ?/4 compensation pattern which extends in the first direction adjacent to the first ?/4 compensation pattern and overlaps the first right-handed circularly polarizing portion.Type: ApplicationFiled: May 29, 2015Publication date: August 4, 2016Inventors: JI HYE KIM, Kwang Hyun Kim, Sang Jae Kim, Teck Soo Kim, Gwan Young Na, Hyoung Joo Lee, Seon Ah Cho, Hyo Sung Hong -
Publication number: 20160216426Abstract: A polarizer plate includes a base film, an adhesive layer disposed on one surface of the base film, a polarizer protection film disposed on one surface of the adhesive layer, a polarizer disposed on one surface of the polarizer protection film, and a cutting line formed perpendicular to the surface of the base film and configured to divide the polarizer protection film and the polarizer into separate regions.Type: ApplicationFiled: June 5, 2015Publication date: July 28, 2016Inventors: Sang Jae KIM, Kwang Hyun KIM, Seon Ah CHO
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Publication number: 20160161786Abstract: Provided is a liquid crystal display panel including a thin-film transistor (TFT) array substrate and a first phase difference film. A liquid crystal layer is disposed between the TFT array substrate and the first phase difference film. A second phase difference film is disposed on the first phase difference film. A phase retardation value of the first phase difference film in a thickness direction is in a range of from about 100 nm to about 300 nm.Type: ApplicationFiled: June 26, 2015Publication date: June 9, 2016Inventors: Hyo Sung HONG, Ji Hoon Kim, Teck Soo Kim, Kwang Hyun Kim, Sang Jae Kim, Ji Hye Kim, Gwan Young Na, Hyoung Joo Lee, Seon Ah Cho
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Publication number: 20160041426Abstract: Disclosed is a liquid crystal display device, including: first and second substrates, which are spaced apart from each other by a predetermined interval while facing each other; a reflective polarizing plate disposed under the first substrate, and including a first refractive index layer and a second refractive index layer, which have different refractive indexes and are repeatedly stacked; first and second compensation layers sequentially stacked on the second substrate, and an upper polarizing plate including a polarizing layer formed on the second compensation layer; and a liquid crystal layer formed between the first and second substrates.Type: ApplicationFiled: May 18, 2015Publication date: February 11, 2016Inventors: Gwan-Young NA, Kwang-Hyun Kim, Sang-Jae Kim, Ji-Hye Kim, Teck-Soo Kim, Hyoung-Joo Lee, Seon-Ah Cho
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Patent number: RE47455Abstract: A liquid crystal display includes first and second gate lines and first and second data lines, on a first substrate, a first thin film transistor connected to the first gate and data lines and including a first source and drain electrode, a second thin film transistor connected to the second gate and data lines and including a second source and drain electrode, first and second pixel electrodes contacting a portion of the first and second drain electrodes, respectively, a passivation layer on the first and second pixel electrodes and the first and second thin film transistors, and a reference electrode on a passivation layer and overlapping the first pixel electrode and the second pixel electrode. The reference electrode includes a plurality of branch electrodes. The first thin film transistor is right of the first data line and the second thin film transistor is left of the second data line.Type: GrantFiled: July 8, 2016Date of Patent: June 25, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyun-Wuk Kim, Jang-Kun Song, Seon-Ah Cho, Eun-Je Jang, You-Sik Shin
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Patent number: RE49271Abstract: A liquid crystal display includes first and second gate lines and first and second data lines, on a first substrate, a first thin film transistor connected to the first gate and data lines and including a first source and drain electrode, a second thin film transistor connected to the second gate and data lines and including a second source and drain electrode, first and second pixel electrodes contacting a portion of the first and second drain electrodes, respectively, a passivation layer on the first and second pixel electrodes and the first and second thin film transistors, and a reference electrode on a passivation layer and overlapping the first pixel electrode and the second pixel electrode. The reference electrode includes a plurality of branch electrodes. The first thin film transistor is right of the first data line and the second thin film transistor is left of the second data line.Type: GrantFiled: May 20, 2019Date of Patent: November 1, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyun-Wuk Kim, Jang-Kun Song, Seon-Ah Cho, Eun-Je Jang, You-Sik Shin