Patents by Inventor Hoi-Lim Kim
Hoi-Lim 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: 9417484Abstract: A liquid crystal display includes; a first substrate, a second substrate disposed facing the first substrate, an alignment layer disposed on at least one of the first substrate and the second substrate, wherein the alignment layer comprises a major alignment material and a vertical photo-alignment material, and the vertical photo-alignment material comprises a first vertical functional group, and a liquid crystal layer interposed between the first substrate and the second substrate.Type: GrantFiled: June 12, 2009Date of Patent: August 16, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jun-Woo Lee, Jong-Sung Bae, Hoi-Lim Kim, Baek-Kyun Jeon, Suk-Hoon Kang, Jin-Soo Jung, Soo-Ryun Cho
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Patent number: 9052549Abstract: A liquid crystal display including: a first substrate and a second substrate facing each other; an alignment layer disposed on one of the first substrate and the second substrate and including a vertical photo-alignment material which includes a first vertical functional group and a photo-reactive group, and a major alignment material which does not include the photo-reactive group; and a liquid crystal layer disposed between the first substrate and the second substrate, wherein a ratio of a molar concentration of the vertical photo-alignment material to the molar concentration of the major alignment material increases in a direction towards a surface of the alignment layer adjacent to the liquid crystal layer.Type: GrantFiled: January 27, 2012Date of Patent: June 9, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jun-Woo Lee, Jong-Sung Bae, Hoi-Lim Kim, Baek-Kyun Jeon, Suk-Hoon Kang, Jin-Soo Jung, Soo-Ryun Cho, Hyun Ku Ahn, Joo Seok Yeom, Kyoung Tae Kim, Gyo-Jic Shin, Eun Ju Kim
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Publication number: 20150116374Abstract: A display apparatus includes a display panel having a first liquid crystal layer, a timing controller that converts image signals to have gray scales corresponding to a first reference value, and compensates the converted image signals to over-drive the first liquid crystal layer, the first reference value being a product of a refractive index anisotropy and a thickness of the first liquid crystal layer, a first driver that converts the compensated image signals to voltages that drive the first liquid crystal layer, a liquid crystal lens panel including a second liquid crystal layer, a liquid crystal lens controller that generates lens signals corresponding to a second reference value defined by a product of a refractive index anisotropy and a second thickness of the second liquid crystal layer, anda second driver that convert the lens signals to voltages that drive the second liquid crystal layer.Type: ApplicationFiled: June 10, 2014Publication date: April 30, 2015Inventors: YongHwan SHIN, Hoi-Lim KIM, Hongyeon LEE
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Publication number: 20150085237Abstract: A liquid crystal photoalignment agent is provided. The liquid crystal photoalignment agent is a copolymer of a cyclobutane dianhydride (“CBDA”) and a CBDA derivative.Type: ApplicationFiled: April 24, 2014Publication date: March 26, 2015Applicant: Samsung Display Co., Ltd.Inventors: Suk Hoon KANG, Hoi-Lim KIM, Yeong Rong PARK, Mi Hwa LEE, Jun Woo LEE, Baek Kyun JEON
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Patent number: 8953127Abstract: A lens panel includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate includes a first base substrate, a first electrode disposed on the first base substrate, and a first alignment layer disposed on the first electrode. The first alignment layer includes a unit lens area. The unit lens area includes a first alignment area having a first azimuthal angle and a second alignment area having a second azimuthal angle. The lens panel may be controlled to function as a Fresnel lens by adjusting the azimuthal angle of the alignment layer without electrodes having micro pitch patterns.Type: GrantFiled: February 27, 2012Date of Patent: February 10, 2015Assignee: Samsung Display Co., Ltd.Inventors: Yong-Hwan Shin, Hoi-Lim Kim
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Patent number: 8608976Abstract: A photo alignment material includes a photo alignment polymer and an organic solvent. The photo alignment polymer is prepared by polymerizing a diamine monomer including at least two photo reactive parts represented by the following Chemical Formula 1. In Chemical Formula 1, R1 represents —(CH2)n—, —O(CH2)n— or R2, R3 and R4 each independently represent —H, —O(CH2)m—1—CH3 or and n and m independently represent an integer of from 1 to 8. Thus, change of the orientation of the alignment layer due to the action of an electric stress may be prevented and/or reduced. Therefore, an after—image may be reduced, and display quality is improved.Type: GrantFiled: March 10, 2009Date of Patent: December 17, 2013Assignee: Samsung Display Co., Ltd.Inventors: Hoi-Lim Kim, Hyun-Ku Ahn, Jun-Woo Lee, Sung-Yi Kim
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Patent number: 8597727Abstract: A photoalignment material includes an alignment polymer, a photoalignment additive including a compound represented by the following Chemical Formula 1 and an organic solvent. In Chemical Formula 1, R1 represents a cyclic compound. A and B independently represent a single bond or —(CnH2n)—. “n” represents an integer in a range of 1 to 12. Each —CH2— of A and/or B may be replaced with R3 represents an alkyl group having 1 to 12 carbon atoms, and each —CH2— of A and/or B may be replaced with —O—. R4 represents In Chemical Formula 1, each hydrogen atom excluding hydrogen atoms of R4 may be replaced with chlorine (Cl) or fluorine (F).Type: GrantFiled: October 9, 2012Date of Patent: December 3, 2013Assignee: Samsung Display Co., Ltd.Inventors: Jun-Woo Lee, Fusayuki Takeshita, Baek-Kyun Jeon, Tae-Sung Jung, Hoi-Lim Kim, Jeong-Hye Choi, Sung-Yi Kim
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Publication number: 20130258256Abstract: A display apparatus according to an exemplary embodiment of the present invention includes first and second polarization plates, first and second phase delay films, and a liquid crystal display panel. A first polarization plate has a first polarization axis. A second polarization plate faces the first polarization plate and has a second polarization axis forming an angle about 85 degrees to 95 degrees with respect to the first polarization axis. A first phase delay film is disposed between the first and second polarization films and has a third polarization axis forming an angle about 40 degrees to 50 degrees with respect to the second polarization plate. A second phase delay film is disposed between the second polarization plate and the first phase delay film, and has a fourth polarization axis forming an angle about ?5 degrees to 5 degree with respect to the third polarization axis.Type: ApplicationFiled: September 6, 2012Publication date: October 3, 2013Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Hoi-Lim KIM, Yong-Hwan SHIN, Min-Sik JUNG, Baek-Kyun JEON
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Patent number: 8482709Abstract: In a liquid crystal display, a first alignment layer formed on a first substrate includes a first region aligned in a first direction and a second region aligned in a second direction opposite to the first direction, and a second alignment layer formed on a second substrate facing the first substrate includes a third region aligned in a third direction different from the first direction and a fourth region aligned in a fourth direction opposite to the third direction. The liquid crystal molecules interposed between the first and second alignment layers are aligned in different directions in different domains defined by the first to fourth regions. A pixel electrode includes an extension part extending in at least one of the first to fourth directions. The aperture ratio and the light transmittance of the liquid crystal display are improved.Type: GrantFiled: April 13, 2011Date of Patent: July 9, 2013Assignee: Samsung Display Co., Ltd.Inventors: Kyoungju Shin, YongHwan Shin, Janwoo Lee, Young Gu Kim, Hyeongchan Ko, Hyunku Ahn, Baekkyun Jeon, Kyoungtae Kim, Gyo Jic Shin, Tai-Huem Om, Min-Sik Jung, Hoi-Lim Kim, Jin-Soo Jung
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Patent number: 8425989Abstract: A photoalignment material and a method of manufacturing of a display substrate using the photoalignment material are disclosed. The photoalignment material includes a photoalignment polymer, a photoalignment additive, and an organic solvent. When the photoalignment additive is used, a side reaction due to ultraviolet (UV) light may be prevented, and the stability of alignment layer may be improved.Type: GrantFiled: September 21, 2009Date of Patent: April 23, 2013Assignee: Samsung Display Co., Ltd.Inventors: Gyo-Jic Shin, Hyun-Ku Ahn, Hoi-Lim Kim
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Publication number: 20120314143Abstract: A lens panel includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate includes a first base substrate, a first electrode disposed on the first base substrate, and a first alignment layer disposed on the first electrode. The first alignment layer includes a unit lens area. The unit lens area includes a first alignment area having a first azimuthal angle and a second alignment area having a second azimuthal angle.Type: ApplicationFiled: February 27, 2012Publication date: December 13, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-Hwan SHIN, Hoi-Lim KIM
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Patent number: 8304038Abstract: A photoalignment material includes an alignment polymer, a photoalignment additive including a compound represented by the following Chemical Formula 1 and an organic solvent. In Chemical Formula 1, R1 represents a cyclic compound. A and B independently represent a single bond or —(CnH2n)—. “n” represents an integer in a range of 1 to 12. Each —CH2— of A and/or B may be replaced with R3 represents an alkyl group having 1 to 12 carbon atoms, and each —CH2— of A and/or B may be replaced with —O—. R4 represents In Chemical Formula 1, each hydrogen atom excluding hydrogen atoms of R4 may be replaced with chlorine (Cl) or fluorine (F).Type: GrantFiled: March 20, 2009Date of Patent: November 6, 2012Assignee: Samsung Display Co., Ltd.Inventors: Jun-Woo Lee, Fusayuki Takeshita, Baek-Kyun Jeon, Tae-Sung Jung, Hoi-Lim Kim, Jeong-Hye Choi, Sung-Yi Kim
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Publication number: 20120196054Abstract: A liquid crystal display including: a first substrate and a second substrate facing each other; an alignment layer disposed on one of the first substrate and the second substrate and including a vertical photo-alignment material which includes a first vertical functional group and a photo-reactive group, and a major alignment material which does not include the photo-reactive group; and a liquid crystal layer disposed between the first substrate and the second substrate, wherein a ratio of a molar concentration of the vertical photo-alignment material to the molar concentration of the major alignment material increases in a direction towards a surface of the alignment layer adjacent to the liquid crystal layer.Type: ApplicationFiled: January 27, 2012Publication date: August 2, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jun-Woo LEE, Jong-Sung BAE, Hoi-Lim KIM, Baek-Kyun JEON, Suk-Hoon KANG, Jin-Soo JUNG, Soo-Ryun CHO, Hyun Ku AHN, Joo Seok YEOM, Kyoung Tae KIM, Gyo-Jic Shin, Eun Ju KIM
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Publication number: 20110261307Abstract: In a liquid crystal display, a first alignment layer formed on a first substrate includes a first region aligned in a first direction and a second region aligned in a second direction opposite to the first direction, and a second alignment layer formed on a second substrate facing the first substrate includes a third region aligned in a third direction different from the first direction and a fourth region aligned in a fourth direction opposite to the third direction. The liquid crystal molecules interposed between the first and second alignment layers are aligned in different directions in different domains defined by the first to fourth regions. A pixel electrode includes an extension part extending in at least one of the first to fourth directions. The aperture ratio and the light transmittance of the liquid crystal display are improved.Type: ApplicationFiled: April 13, 2011Publication date: October 27, 2011Inventors: Kyoungju SHIN, YongHwan Shin, Janwoo Lee, Young Gu Kim, Hyeongchan Ko, Hyunku Ahn, Baekkyun Jeon, Kyoungtae Kim, Gyo Jic Shin, Tai-Huem Om, Min-Sik Jung, Hoi-Lim Kim, Jin-Soo Jung
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Publication number: 20110032464Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes a first substrate and a second substrate facing each other and a liquid crystal layer formed between the first substrate and the second substrate and including liquid crystal molecules. The liquid crystal layer includes a first sub-region and a second sub-region having different alignment azimuth angles of the liquid crystal molecules, the liquid crystal molecules of the first sub-region are aligned to have a first azimuth angle and a polar angle of less than 90° near the first substrate and are vertically aligned near the second substrate, and the liquid crystal molecules of the second sub-region are aligned to have a second azimuth angle and a polar angle of less than 90° near the second substrate and are vertically aligned near the first substrate.Type: ApplicationFiled: July 28, 2010Publication date: February 10, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Gyo-Jic SHIN, Hyun-ku Ahn, Baek-Kyun Jeon, Hoi-Lim Kim, Jeong-Hye Choi, Yong-Hwan Shin, Min-Sik Jung
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Publication number: 20100197186Abstract: A photoalignment material and a method of manufacturing of a display substrate using the photoalignment material are disclosed. The photoalignment material includes a photoalignment polymer, a photoalignment additive, and an organic solvent. When the photoalignment additive is used, a side reaction due to ultraviolet (UV) light may be prevented, and the stability of alignment layer may be improved.Type: ApplicationFiled: September 21, 2009Publication date: August 5, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Gyo-Jic Shin, Hyun-Ku Ahn, Hoi-Lim Kim
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Publication number: 20100128214Abstract: A liquid crystal display includes; a first substrate, a second substrate disposed facing the first substrate, an alignment layer disposed on at least one of the first substrate and the second substrate, wherein the alignment layer comprises a major alignment material and a vertical photo-alignment material, and the vertical photo-alignment material comprises a first vertical functional group, and a liquid crystal layer interposed between the first substrate and the second substrate.Type: ApplicationFiled: June 12, 2009Publication date: May 27, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Jun-Woo LEE, Jong-Sung BAE, Hoi-Lim KIM, Baek-Kyun JEON, Suk-Hoon KANG, Jin-Soo JUNG, Soo-Ryun CHO
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Publication number: 20100047482Abstract: The present invention provides photo-reactive compound. The photo-reactive compound, in which chains are combined to a polymer backbone that is used for a photo-alignment layer compound, is represented by the following Formula 1 or Formula 2. L denotes a substituted or unsubstituted alkyl group having at least 1 but no more than 18 carbons, V denotes a substituted or unsubstituted alkyl group having at least 1 but no more than 18 carbons, R1, R2, and R3 each denote H or a substituted or unsubstituted alkyl group having at least 1 but no more than 18 carbons, X+Y=1, 0<X, and Y<1.Type: ApplicationFiled: May 12, 2009Publication date: February 25, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Hoi-Lim KIM, Jun-Woo LEE, Hyun-ku AHN, Baek-Kyun JEON, Tae-Sung JUNG, Jeong-Hye CHOI, Sung-Yi KIM
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Publication number: 20090290109Abstract: A photoalignment material includes an alignment polymer, a photoalignment additive including a compound represented by the following Chemical Formula 1 and an organic solvent. In Chemical Formula 1, R1 represents a cyclic compound. A and B independently represent a single bond or —(CnH2n)—. “n” represents an integer in a range of 1 to 12. Each —CH2— of A and/or B may be replaced with R3 represents an alkyl group having 1 to 12 carbon atoms, and each —CH2— of A and/or B may be replaced with —O—. R4 represents In Chemical Formula 1, each hydrogen atom excluding hydrogen atoms of R4 may be replaced with chlorine (Cl) or fluorine (F). Thus, an alignment layer having an orientation may be formed without an alignment polymer having a photoreactive portion, and the density of the alignment layer may be increased.Type: ApplicationFiled: March 20, 2009Publication date: November 26, 2009Inventors: Jun-Woo LEE, Fusayuki Takashita, Baek-Kyun Jeon, Tae-Sung Jung, Hoi-Lim Kim, Jeong-Hye Choi, Sung-Yi Kim
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Publication number: 20090258158Abstract: A photo alignment material includes a photo alignment polymer and an organic solvent. The photo alignment polymer is prepared by polymerizing a diamine monomer including at least two photo reactive parts represented by the following Chemical Formula 1. In Chemical Formula 1, R1 represents —(CH2)n—, —O(CH2)n— or R2, R3 and R4 each independently represent —H, —O(CH2)m-1—CH3 or and n and m independently represent an integer of from 1 to 8. Thus, change of the orientation of the alignment layer due to the action of an electric stress may be prevented and/or reduced. Therefore, an after-image may be reduced, and display quality is improved.Type: ApplicationFiled: March 10, 2009Publication date: October 15, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Hoi-Lim KIM, Hyun-Ku AHN, Jun-Woo LEE, Sung-Yi KIM