Patents by Inventor Si-Heun Kim
Si-Heun Kim 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: 10061145Abstract: A liquid crystal display device, including: a display substrate including a first base substrate, a switching device disposed on the first base substrate, a color filter layer disposed on the switching device, and a first electrode disposed on the color filter layer; a counter display substrate including a second base substrate and a second electrode disposed on the second base substrate and facing the first electrode, wherein the counter display substrate is disposed separately from and facing the display substrate; a liquid crystal layer disposed between the display substrate and the counter display substrate, wherein the liquid crystal layer includes at least one first liquid crystal compound represented by Formula 1 and at least one second liquid crystal compound represented by Formula 2; and a light-shielding spacer disposed between the display substrate and the counter display substrate and maintaining a thickness of the liquid crystal layer: wherein in Formula 1 and Formula 2, each of R11—*, RType: GrantFiled: November 21, 2016Date of Patent: August 28, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Si Heun Kim, Soon Joon Rho, Jong Ho Son, Kyung Hae Park, Joon Hyung Park, Beom Soo Shin, Hye Lim Jang, Kang Seob Jeong
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Patent number: 9988576Abstract: A liquid crystal display device comprises a display panel including a first base substrate, a switching element disposed on the first base substrate, a color filter layer disposed on the switching element, and a pixel electrode disposed on the color filter layer; a counter display panel including a second base substrate and a common electrode disposed on the second base substrate and facing the display panel; a liquid crystal layer disposed between the display panel and the counter display panel and having negative dielectric anisotropy, wherein the liquid crystal layer includes at least one compound represented by Formula 1 below, and the liquid crystal layer does not include a compound represented by Formula A below; and a light-blocking spacer disposed on the display panel and including an area overlapping the switching element, and maintaining the thickness of the liquid crystal layer.Type: GrantFiled: June 20, 2016Date of Patent: June 5, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Soon Joon Rho, Joon Hyung Park, Jong Ho Son, Beom Soo Shin, Kang Seob Jeong, Si Heun Kim, Kyung Hae Park, Keun Chan Oh, Hye Lim Jang
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Patent number: 9902905Abstract: A liquid crystal composition includes at least one polar liquid crystal molecule represented by Chemical Formulas A or B. Each K is independently 1,4-cyclohexylene or 1,4-phenylene, groups connected to carbon ring of 1,4-cyclohexylene or 1,4-phenylene are all hydrogen or at least one of the groups is fluorine, and n is 1 or 2; in Chemical Formula A, X1 and X2 are independently a single bond, —CH2-, —CH2CH2-, —CF2-, —CH2O—, or —OCH2-, L1 and L2 are independently —H, —F, —CF3, or —OCF3, and R1 and R2 are independently an alkyl or alkoxy group having 1 to 9 carbon atoms or an alkenyl group having 2 to 9 carbon atoms; in Chemical Formula B, L3 and L4 are independently —H, —F, —CF3, or —OCF3, and R3 is an alkyl or alkoxy group having 1 to 9 carbon atoms or an alkenyl group having 2 to 9 carbon atoms.Type: GrantFiled: March 28, 2016Date of Patent: February 27, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Si Heun Kim, Beom-Soo Shin, Hye Lim Jang
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Patent number: 9862886Abstract: An exemplary embodiment of the present invention provides a compound represented by Chemical Formula 1: wherein, in Chemical Formula 1, n is 0, 1, or 2, and a substituent represented by X is F, Cl, CF3, CF2CF3 CHF2, CH2F, OCF3, CN, NCS, or a C1 to C5 alkyl including 1 to 3 fluoro substituents and a CH2 group independently substituted with one or more oxygen atoms; (R1) is hydrogen or a C1 to C15 alkyl, at least one CH2 group being independently replaced with —C?C—, —CF2O—, —CH?CH—, —O—, —CO—O—, —O—CO—, or —O—CO—O— in a way that oxygen atoms are directly connected to each other, and 1 to 3 hydrogen atoms of the C1 to C15 alkyl being replaced with halogen; (F) indicates that a fluoro is optionally substituted in place of a hydrogen, and each of is independentlyType: GrantFiled: June 16, 2016Date of Patent: January 9, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hye Lim Jang, Beom-Soo Shin, Si Heun Kim, Keun Chan Oh, Bong Hee Kim, Sun Hee Lee
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Patent number: 9783735Abstract: A liquid crystal display device comprises a first substrate, a second substrate which faces the first substrate, an electrode part which is provided on at least one of the first substrate and the second substrate, and a liquid crystal layer which comprises a liquid crystal composition and is provided between the first substrate and the second substrate. The liquid crystal composition includes a liquid crystal compound of Formula 1. wherein R1, R2, A11, A12, A13, A21, A22, Z11, Z12, Z13, Z21, Z22, a, b, c, d, and e are as described herein.Type: GrantFiled: March 3, 2016Date of Patent: October 10, 2017Assignees: SAMSUNG DISPLAY CO., LTD., DONGJIN SEMICHEM CO., LTD.Inventors: Si Heun Kim, Beom Soo Shin, Keun Chan Oh, Bong Hee Kim, Young Ho Seo
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Publication number: 20170261791Abstract: A liquid crystal display device, including: a display substrate including a first base substrate, a switching device disposed on the first base substrate, a color filter layer disposed on the switching device, and a first electrode disposed on the color filter layer; a counter display substrate including a second base substrate and a second electrode disposed on the second base substrate and facing the first electrode, wherein the counter display substrate is disposed separately from and facing the display substrate; a liquid crystal layer disposed between the display substrate and the counter display substrate, wherein the liquid crystal layer includes at least one first liquid crystal compound represented by Formula 1 and at least one second liquid crystal compound represented by Formula 2; and a light-shielding spacer disposed between the display substrate and the counter display substrate and maintaining a thickness of the liquid crystal layer: wherein in Formula 1 and Formula 2, each of R11—*, R1Type: ApplicationFiled: November 21, 2016Publication date: September 14, 2017Inventors: Si Heun KIM, Soon Joon RHO, Jong Ho SON, Kyung Hae PARK, Joon Hyung PARK, Beom Soo SHIN, Hye Lim JANG, Kang Seob JEONG
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Patent number: 9746737Abstract: Provided is a liquid crystal display device including a first substrate on which a first alignment layer is formed, a second substrate on which a second alignment layer is formed, and a liquid crystal layer disposed between the first and second alignment layers and including liquid crystals of a helical structure in which a helical axis is parallel to the first and second substrates. At least one of the first and second alignment layers has a graduation distribution profile of a pretilt angle which ranges from about 0 degrees to about 90 degrees.Type: GrantFiled: January 23, 2015Date of Patent: August 29, 2017Assignee: Samsung Display Co., Ltd.Inventors: Si-Heun Kim, Chang-Hun Lee, Jun-Woo Lee
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Publication number: 20170174990Abstract: A liquid crystal display device comprises a display panel including a first base substrate, a switching element disposed on the first base substrate, a color filter layer disposed on the switching element, and a pixel electrode disposed on the color filter layer; a counter display panel including a second base substrate and a common electrode disposed on the second base substrate and facing the display panel; a liquid crystal layer disposed between the display panel and the counter display panel and having negative dielectric anisotropy, wherein the liquid crystal layer includes at least one compound represented by Formula 1 below, and the liquid crystal layer does not include a compound represented by Formula A below; and a light-blocking spacer disposed on the display panel and including an area overlapping the switching element, and maintaining the thickness of the liquid crystal layer.Type: ApplicationFiled: June 20, 2016Publication date: June 22, 2017Inventors: Soon Joon RHO, Joon Hyung PARK, Jong Ho SON, Beom Soo SHIN, Kang Seob JEONG, Si Heun KIM, Kyung Hae PARK, Keun Chan OH, Hye Lim JANG
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Patent number: 9562193Abstract: A liquid crystal display includes: a first insulation substrate; a gate line and a data line formed on the first insulation substrate; a first electrode and a second electrode formed on the gate line and the data line and overlapping each other via an insulating layer interposed therebetween; a second insulation substrate facing the first insulation substrate; and a chiral dopant inserted between the first insulation substrate and the second insulation substrate. A content of the chiral dopant may be within about 1%, and liquid crystal molecules of a liquid crystal layer may be twisted with a pitch of about 10 ?m to about 100 ?m by the chiral dopant.Type: GrantFiled: October 2, 2014Date of Patent: February 7, 2017Assignee: Samsung Display Co., Ltd.Inventors: Si Heun Kim, Chang-Hun Lee, Daisuke Inoue, Mi Suk Kim, Tae Ho Kim, So Youn Park, Keun Chan Oh
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Patent number: 9559127Abstract: A thin film transistor array panel includes an insulation substrate; a gate line and a first electrode on the insulation substrate; a gate insulating layer on the gate line and the first electrode; a data line on the gate insulating layer; a passivation layer on the gate insulating layer and the data line; and a second electrode on the passivation layer. Relative permittivity (?) of the gate insulating layer is more than about 15, and a thickness of the gate insulating layer is about 2000 angstroms.Type: GrantFiled: December 30, 2014Date of Patent: January 31, 2017Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Daisuke Inoue, Mi Suk Kim, Si Heun Kim, Tae Ho Kim, So Youn Park, Keun Chan Oh, Chang-Hun Lee
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Publication number: 20170015904Abstract: A liquid crystal composition includes a first compound represented by Chemical Formula 1. In Chemical Formula 1, R1 is an alkyl group having a carbon number of 1 to 10 or a cycloalkyl group having a total carbon number of 3 to 16, and R2 is an alkoxy group having a carbon number of 1 to 10. The liquid crystal composition does not include a compound having an alkenyl as a substituent group, and the liquid crystal composition does not include a compound represented by Chemical Formula 4. In Chemical Formula 4, R5 and R5? are independently an alkyl group having a carbon number of 1 to 10 or an alkoxy group having a carbon number of 1 to 10.Type: ApplicationFiled: January 21, 2016Publication date: January 19, 2017Inventors: Soon Joon Rho, Sun Young Kwon, Kyung Min Kim, Se Ran Kim, Si Heun Kim, Hoi-Lim Kim, Beom-Soo Shin, Keun Chan Oh, Hye Kim Jang
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Publication number: 20160369167Abstract: An exemplary embodiment of the present invention provides a compound represented by Chemical Formula 1: wherein, in Chemical Formula 1, n is 0, 1, or 2, and a substituent represented by X is F, Cl, CF3, CF2CF3 CHF2, CH2F, OCF3, CN, NCS, or a C1 to C5 alkyl including 1 to 3 fluoro substituents and a CH2 group independently substituted with one or more oxygen atoms; (R1) is hydrogen or a C1 to C15 alkyl, at least one CH2 group being independently replaced with —C?C—, —CF2O—, —CH?CH—, —O—, —CO—O—, —O—CO—, or —O—CO—O— in a way that oxygen atoms are directly connected to each other, and 1 to 3 hydrogen atoms of the C1 to C15 alkyl being replaced with halogen; (F) indicates that a fluoro is optionally substituted in place of a hydrogen, and each of is independentlyType: ApplicationFiled: June 16, 2016Publication date: December 22, 2016Inventors: Hye Lim JANG, Beom-Soo SHIN, Si Heun KIM, Keun Chan OH, Bong Hee KIM, Sun Hee LEE
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Publication number: 20160362604Abstract: A liquid crystal composition includes at least one polar liquid crystal molecule represented by Chemical Formulas A or B. Each K is independently 1,4-cyclohexylene or 1,4-phenylene, groups connected to carbon ring of 1,4-cyclohexylene or 1,4-phenylene are all hydrogen or at least one of the groups is fluorine, and n is 1 or 2; in Chemical Formula A, X1 and X2 are independently a single bond, —CH2?, —CH2CH2?, —CF2?, —CH2O—, or —OCH2?, L1 and L2 are independently —H, —F, —CF3, or —OCF3, and R1 and R2 are independently an alkyl or alkoxy group having 1 to 9 carbon atoms or an alkenyl group having 2 to 9 carbon atoms; in Chemical Formula B, L3 and L4 are independently —H, —F, —CF3, or —OCF3, and R3 is an alkyl or alkoxy group having 1 to 9 carbon atoms or an alkenyl group having 2 to 9 carbon atoms.Type: ApplicationFiled: March 28, 2016Publication date: December 15, 2016Inventors: Si Heun KIM, Beom-Soo SHIN, Hye Lim JANG
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Patent number: 9494836Abstract: A liquid crystal display includes: a first substrate; a gate line and a data line disposed on the first substrate; a passivation layer disposed on the gate line and the data line; a first electrode and a second electrode disposed on the passivation layer; and a first insulating layer interposed between the first and second electrodes, where the first and second electrodes overlap each other via the first insulating layer, the second electrode includes a plurality of branch electrodes, and an end portion of the plurality of branch electrodes includes a first side portion and a second side portion extending parallel to the data line, and an oblique portion which connects the first side portion and the second side portion to each other and forms a first angle of less than 90 degrees with an extending line of the first side portion.Type: GrantFiled: May 10, 2016Date of Patent: November 15, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Mi Suk Kim, Chang-Hun Lee, Tae Ho Kim, Si Heun Kim, So Youn Park, Keun Chan Oh, Daisuke Inoue
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Publication number: 20160304783Abstract: A liquid crystal display device comprises a first substrate, a second substrate which faces the first substrate, an electrode part which is provided on at least one of the first substrate and the second substrate, and a liquid crystal layer which comprises a liquid crystal composition and is provided between the first substrate and the second substrate. The liquid crystal composition includes a liquid crystal compound of Formula 1. wherein R1, R2, A11, A12, A13, A21, A22, Z11, Z12, Z13, Z21, Z22, a, b, c, d, and e are as described herein.Type: ApplicationFiled: March 3, 2016Publication date: October 20, 2016Inventors: Si Heun KIM, Beom Soo SHIN, Keun Chan OH, Bong Hee KIM, Young Ho SEO
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Publication number: 20160252794Abstract: A liquid crystal display includes: a first substrate; a gate line and a data line disposed on the first substrate; a passivation layer disposed on the gate line and the data line; a first electrode and a second electrode disposed on the passivation layer; and a first insulating layer interposed between the first and second electrodes, where the first and second electrodes overlap each other via the first insulating layer, the second electrode includes a plurality of branch electrodes, and an end portion of the plurality of branch electrodes includes a first side portion and a second side portion extending parallel to the data line, and an oblique portion which connects the first side portion and the second side portion to each other and forms a first angle of less than 90 degrees with an extending line of the first side portion.Type: ApplicationFiled: May 10, 2016Publication date: September 1, 2016Inventors: Mi Suk KIM, Chang-Hun LEE, Tae Ho KIM, Si Heun KIM, So Youn PARK, Keun Chan OH, Daisuke INOUE
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Patent number: 9416316Abstract: A liquid crystal composition including a first class including a polar liquid crystal compound having at least one fluorine atom and a second class compound including a neutral liquid crystal compound, in which the first class compound includes a first subclass compound having a dielectric anisotropy (??) of 15 to 21 and a second subclass compound having a dielectric anisotropy (??) of 5 to 15, and the first sub-class compound includes a liquid crystal compound expressed by the following Chemical Formula 1, in which R is an alkyl group or an alkenyl group.Type: GrantFiled: October 10, 2014Date of Patent: August 16, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Si Heun Kim, Eun A Kim
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Publication number: 20160185763Abstract: A liquid crystal stabilizer according to an exemplary embodiment of the present invention includes at least one of the compounds represented by the following Chemical Formulae 1 and 2. X1 is any one of H, O, OR, and R, X2 is any one of O, OCO, OR, RO, NOR, and R, X3 is any one of O, OCO, OR, RO, NOR, and R, A and B each independently include one or more of a cyclohexyl group, a cyclic ether group, and a phenyl group, R is an alkyl group having 1 to 5 carbon atoms, and m and n are each independently a natural number from 0 to 2.Type: ApplicationFiled: June 19, 2015Publication date: June 30, 2016Inventors: Si Heun KIM, Fusayuki TAKESHITA, Ji Hong BAE, Beom-Soo SHIN, Keun Chan OH, Hye Lim JANG
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Patent number: 9341899Abstract: A liquid crystal display includes: a first substrate; a gate line and a data line disposed on the first substrate; a passivation layer disposed on the gate line and the data line; a first electrode and a second electrode disposed on the passivation layer; and a first insulating layer interposed between the first and second electrodes, where the first and second electrodes overlap each other via the first insulating layer, the second electrode includes a plurality of branch electrodes, and an end portion of the plurality of branch electrodes includes a first side portion and a second side portion extending parallel to the data line, and an oblique portion which connects the first side portion and the second side portion to each other and forms a first angle of less than 90 degrees with an extending line of the first side portion.Type: GrantFiled: September 22, 2014Date of Patent: May 17, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Mi Suk Kim, Chang-Hun Lee, Tae Ho Kim, Si Heun Kim, So Youn Park, Keun Chan Oh, Daisuke Inoue
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Publication number: 20160011464Abstract: Provided is a liquid crystal display device including a first substrate on which a first alignment layer is formed, a second substrate on which a second alignment layer is formed, and a liquid crystal layer disposed between the first and second alignment layers and including liquid crystals of a helical structure in which a helical axis is parallel to the first and second substrates. At least one of the first and second alignment layers has a graduation distribution profile of a pretilt angle which ranges from about 0 degrees to about 90 degrees.Type: ApplicationFiled: January 23, 2015Publication date: January 14, 2016Inventors: Si-Heun Kim, Chang-Hun Lee, Jun-Woo Lee