Alignment Layer Of Specified Composition Patents (Class 428/1.2)
  • Publication number: 20140161993
    Abstract: Disclosed therein are an acrylate compound having a photoreactive group, a photoreactive acrylate polymer, and a photo-alignment layer comprising the same that not only have excellences in alignment properties and alignment rate and readiness for change in the alignment direction based on the polarization direction of radiation but also exhibit a high solubility to organic solvents and good workability.
    Type: Application
    Filed: November 29, 2013
    Publication date: June 12, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Dong-Woo Yoo, Sung-Ho Chun, Dai-Seung Choi
  • Patent number: 8747967
    Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes a first substrate and a second substrate facing each other, an alignment layer disposed on at least one of the first substrate or the second substrate, the alignment layer including at least one vertical alignment monomer and a photo-alignment layer separated from the at least one vertical alignment monomer, and a liquid crystal layer disposed between the first substrate and the second substrate. The photo-alignment layer includes a main chain and at least one side chain connected to the main chain, and the at least one side chain includes at least one vertical photo-alignment material.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: June 10, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Suk Hoon Kang, Jun Woo Lee, Baek Kyun Jeon, Kyoung Tae Kim, Soo-Ryun Cho
  • Publication number: 20140154428
    Abstract: Provided is a liquid crystal alignment layer of which a constituent member is a compound represented by the general formula (I).
    Type: Application
    Filed: June 26, 2012
    Publication date: June 5, 2014
    Applicant: DIC CORPORATION
    Inventors: Martin Schadt, Sayaka Nose, Yutaka Nagashima, Isa Nishiyama, Haruyoshi Takatsu
  • Patent number: 8741397
    Abstract: Disclosed is a liquid crystal display element which is composed of a pair of substrates (1) at least one of which is transparent. The liquid crystal display element comprises, between the pair of substrates, a transparent electrode (2), an aligning agent (3) that contains at least reactive monomers and/or oligomers (5), and a liquid crystal layer. The liquid crystal display element is characterized in that an alignment layer is obtained by polymerizing the reactive monomers or oligomers contained in the aligning agent, and the liquid crystal layer is composed of a liquid crystal composition that contains a compound (4) having at least one benzene ring in each molecule, said benzene ring containing at least one fluorine atom and being disubstituted by halogen atoms.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: June 3, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Norikatsu Hattori, Atsuko Fujita
  • Patent number: 8741398
    Abstract: The present invention provides a liquid crystal panel and an alignment film thereof, and the alignment film is made of a modified polyimide which has conjugated double bond at side chain. Resistance value of the alignment film is less than the resistance value of a liquid crystal material of the liquid crystal panel by properties of the conjugated double bond that can reduce the resistance value of a prior art polyimide. In addition, improving the imidization ratio of a modified polyimide alignment film is important. The present invention is conducted the charged ion from liquid crystal layer to the alignment film by the conjugated double bond of the modified polyimide at the side chain to prevent the increase in the ion density of the liquid crystal in part of this area, and improve the problem of image sticking.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: June 3, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Chung-Ching Hsieh, Cheng-ming He
  • Patent number: 8722158
    Abstract: Disclosed is a liquid crystal photo-alignment agent and a liquid crystal photo-alignment film manufactured using the same. The liquid crystal photo-alignment agent includes an epoxy compound represented by Chemical Formula 1, and a polymer including a polyamic acid, a polyimide, or a mixture thereof.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: May 13, 2014
    Assignee: Cheil Industries Inc.
    Inventors: Hyo-Ju Seo, Tae-Hyoung Kwak, Dong-Seon Uh, Jae-Deuk Yang
  • Patent number: 8722157
    Abstract: The present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same, and a liquid crystal display device including the same. More particularly, the present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same, and a liquid crystal display device including the same, which have an alignment property by photoreaction, excellent thermal stability and photoreactivity, the increased photo-reaction rate and reliability of the alignment film, thereby showing high manufacturing process efficiency.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: May 13, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dai-Seung Choi, Heon Kim, Sung-Ho Chun, Sung-Joon Oh, Dong-Woo Yoo, Yu-Chan Kang
  • Publication number: 20140120272
    Abstract: The present application relates to a liquid crystal composition, a liquid crystal cell, a liquid crystal film, and methods of preparing the same. As an exemplary liquid crystal composition, according to the present application can provide a liquid crystal layer aligned without a special alignment layer. According to the liquid crystal composition, all of the liquid crystal cell, in which the liquid crystal layer is maintained in a non-polymerized state, and the liquid crystal film prepared by polymerizing the liquid crystal layer can be provided.
    Type: Application
    Filed: December 19, 2013
    Publication date: May 1, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Sin Young Kim, Moon Soo Park, Dae Hee Lee, Da Mi Lee
  • Patent number: 8703253
    Abstract: The present invention relates to a composition for liquid crystal alignment layer, a preparation method of liquid crystal alignment layer using the same, and an optical film comprising the liquid crystal alignment layer. More particularly, the composition for liquid crystal alignment layer according to the present invention includes crosslinkable functional monomers as well as a photoreactive polymer, thereby improving thermal stability and durability of the liquid crystal alignment layer that is prepared by using the composition for liquid crystal alignment layer. In addition, when the liquid crystal alignment layer is used to produce an optical film, adhesive strength between substrate and liquid crystal alignment layer and between liquid crystal alignment layer and liquid crystal film can be improved.
    Type: Grant
    Filed: January 19, 2009
    Date of Patent: April 22, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Du-Hyun Shin, Hyuk Yoon, Moon-Soo Park
  • Patent number: 8704977
    Abstract: The invention provides a liquid crystal cell and method thereof. The cell comprises two opposed substrates and a surfactant-free lyotropic chromonic liquid crystals (LCLC) material disposed therebetween. By using an ammonium compound with LCLC or surface treatment on the substrates, the alignment of the LCLC material can be manipulated as a homeotropic bulk alignment; or a hybrid bulk alignment in which the LCLC alignment is changed from homeotropic bulk alignment in the vicinity of one substrate to planar alignment in the vicinity of another substrate. The cell can be used in biosensing, detection and amplification of ligands, optical devices, and photovoltaics etc.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: April 22, 2014
    Assignee: Kent State University
    Inventors: Oleg D. Lavrentovich, Yuriy A. Nastyshyn, Vassili G. Nazarenko, Roman M. Vasyuta, Oleksandr P. Boiko, Ye Yin, Sergij V. Shiyanovskii
  • Patent number: 8704985
    Abstract: Disclosed are an alignment layer and a liquid crystal display having the same. The alignment layer comprises a polyimide compound having an azo group and exhibiting optical alignment characteristics and a discotic liquid crystal compound exhibiting optical anisotropy. The liquid crystal display comprises first and second substrates facing each other, liquid crystal aligned between the first and second substrates, and an alignment layer formed on at least one surface of the first and second substrates. The alignment layer is adjacent to the liquid crystal and has optical alignment characteristics and optical anisotropy.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: April 22, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Ki-Chul Shin
  • Publication number: 20140104540
    Abstract: This disclosure provides a LC panel and a LCD apparatus using the LC panel. The LC panel includes: a first substrate and a second substrate opposing the first substrate, arranging the first substrate to face the second substrate; a LC layer containing a plurality of LC molecules between the first substrate and second substrate; and a plurality of vertical alignment molecules, each comprising a long-chain alignment terminal, a cross-linking terminal, and at least one bonding terminal; wherein the at least one bonding terminal couples the vertical alignment molecule to the first or second substrate to form a surface bonding, the long-chain alignment terminals are parallel to each other and perpendicular to the first or second substrate, the cross-linking terminals link the neighboring vertical alignment molecules together, and the LC molecules are vertically aligned between the first substrate and second substrate by means of the long-chain alignment terminals.
    Type: Application
    Filed: September 12, 2013
    Publication date: April 17, 2014
    Applicant: INNOLUX CORPORATION
    Inventors: SHU-HAN YU, YUEH-HSING LI, HUNG-ZE LIN, KAI-NENG YANG, TSAU-HUA HSIEH
  • Patent number: 8691349
    Abstract: A liquid crystal display panel including a first substrate, a second substrate, a liquid crystal layer, and a polymer stabilized alignment layer is provided. The second substrate is disposed opposite to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The polymer stabilized alignment layer is disposed between the first substrate and the liquid crystal layer, and an average surface roughness of the polymer stabilized alignment layer is greater than or equal to 10 nm.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: April 8, 2014
    Assignee: Au Optronics Corporation
    Inventors: Cheng-Jung Chiang, Chih-Ho Chiu, Chung-Ching Hsieh, Chia-Hsuan Pai, Bo-Hsin Huang, Te-Sheng Chen
  • Patent number: 8691350
    Abstract: An object of the present invention is to provide a liquid crystal display device in which a risk of generation of a image sticking is reduced. A liquid crystal display device (100) of the present invention includes a pair of glass substrates (11) and (21), a liquid crystal layer (30) provided between the pair of glass substrates (11) and (21), an alignment layer (23) provided between the liquid crystal layer (30) and at least one of the pair of glass substrates (11) and (21), and an alignment sustaining layer (24) for defining a direction in which liquid crystal molecules constituting the liquid crystal layer (30) are inclined, the alignment sustaining layer (24) being provided between the alignment layer (23) and the liquid crystal layer (30), the alignment layer (23) and the alignment sustaining layer (24) being covalently bound to each other.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: April 8, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masanobu Mizusaki, Youhei Nakanishi
  • Patent number: 8685502
    Abstract: A liquid crystal display including a first substrate; a second substrate facing the first substrate; a first field generating electrode disposed on the first substrate; a second field generating electrode disposed on the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate, the liquid crystal layer including a liquid crystal and an alignment assistant, wherein the alignment assistant includes a mesogen and two or more photo-polymerizable groups.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: April 1, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Hyup Lee, Jae-Jin Lyu
  • Patent number: 8679595
    Abstract: A liquid crystal display device (100) according to the present invention includes: an active matrix substrate (220) having a pixel electrode (224); a counter substrate (240) having a counter electrode (244); a vertical-alignment type liquid crystal layer (260); and alignment sustaining layers (210, 230) provided between the active matrix substrate (220) and the liquid crystal layer (260) and between the counter substrate (240) and the liquid crystal layer (260). The alignment sustaining layers (210, 230) contain a polymerization product (poa) resulting from polymerization of a polyfunctional monomer. At least one of the active matrix substrate and the counter substrate further includes an alignment film (110, 120) located on the liquid crystal layer side, the alignment film (110, 120) containing polyimide (pi) and a polymerization product (pob) resulting from polymerization of a polyfunctional monomer.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: March 25, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masanobu Mizusaki, Yohei Nakanishi
  • Patent number: 8673177
    Abstract: A liquid crystal alignment agent includes a polymer and an organic solvent for dissolving the polymer. The polymer is obtained by subjecting a diamine composition and a tetracarboxylic dianhydride compound to a polymerization reaction. The diamine composition includes a first diamine compound, a second diamine compound, and a third diamine compound as defined in the specification. A liquid crystal alignment film formed from the liquid crystal alignment agent and a liquid crystal display element including the liquid crystal alignment film are also disclosed.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: March 18, 2014
    Assignee: Chi Mei Corporation
    Inventor: Tsung-Pei Tsai
  • Patent number: 8654289
    Abstract: An LCD device includes first and second substrates, an alignment layer formed over at least one of the substrates, and a liquid crystal layer formed between the substrates. The alignment layer is formed of a mixture of rubbing alignment and UV alignment materials. A method of fabricating the LCD device includes preparing first and second substrates; coating an alignment layer over at least one of the substrates; performing a rubbing process on the substrate coated with the alignment layer; and irradiating polarized UV rays onto the substrate coated with the alignment layer, wherein the alignment layer is formed of a mixture of rubbing alignment a UV alignment materials. The rubbing process obtains high anchoring energy is obtained, thereby preventing afterimages. Also, the process of irradiating the polarized UV rays eliminates the problem of light leakage.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: February 18, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Su-Hyun Park
  • Patent number: 8647724
    Abstract: The present invention provides a liquid crystal display device capable of reducing the probability of image sticking. The liquid crystal display device includes a pair of substrates and a liquid crystal layer between the substrates. At least one of the substrates includes an alignment film and a polymer layer on the alignment film. The polymer layer includes monomer units derived from at least two species of polymerizable monomers. The at least two species of polymerizable monomers include at least two species of monomers selected from the group consisting of: specific polyfunctional monomers and specific monofunctional monomers.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: February 11, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masanobu Mizusaki, Takashi Katayama, Yuichi Kawahira, Takeshi Noma, Yohei Nakanishi
  • Patent number: 8632862
    Abstract: A liquid crystal display includes: a first substrate and a second substrate facing each other; a pair of field generating electrodes disposed on the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate and including liquid crystal molecules having positive dielectric anisotropy; and at least one alignment layer disposed between the first substrate and the second substrate, wherein the alignment layer includes a main chain and at least one side chain connected to the main chain, and the side chain includes a vertical functional group or a polar group.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: January 21, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung Woon Kim, An Na Park
  • Publication number: 20140017417
    Abstract: Problem to be Solved The present invention is a transparent conductive film characterized in that: a major component of the transparent conductive film is a single-walled carbon nanotube; the single-walled carbon nanotubes are present in a bundle state; and a rope-like shape, which is a state where the bundles are gathered together, can be confirmed by scanning electron microscope observation. The present invention is also a method for producing a liquid crystal alignment film using a transparent electrode substrate, with an electrode layer being the aforementioned transparent conductive film. According to the invention, a transparent electrode substrate with high wettability can be obtained, and further a method for producing an alignment film by which a uniform alignment film can be obtained without deteriorating an electrical characteristic is provided.
    Type: Application
    Filed: July 10, 2013
    Publication date: January 16, 2014
    Applicant: Kuraray Co., Ltd.
    Inventors: Takahiro KITANO, Masayasu OGUSHI
  • Patent number: 8628698
    Abstract: Disclosed is a resin composition for a protective layer of a color filter including an acrylate-based resin including a repeating unit represented by each of Chemical Formulae 1 to 3, a melamine-based resin represented by Chemical Formula 4, a thermal acid generator (TAG), and a solvent.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: January 14, 2014
    Assignee: Cheil Industries Inc.
    Inventors: Se-Young Choi, Jae-Hyun Kim, Nam-Gwang Kim, Eui-June Jeong, Sang-Kyun Kim, Kwen-Woo Han, Hyun-Hoo Sung
  • Publication number: 20140010973
    Abstract: A liquid crystal composition including a polymerizable compound, and an AM device including the liquid crystal composition are described. The liquid crystal composition includes the compound (1) and the compound (2): wherein P1 and P2 are polymerizable groups; the rings A, B, C and E are 1,4-cyclohexylene or 1,4-phenylene, etc.; the ring D is 2,3-difluoro-1,4-phenylene, etc.; Z1 and Z2 are alkylene, etc.; L1, Z3 and Z4 are a single bond, etc.; R1 and R2 are alkyl, etc.; and q, r and s are 1, etc.
    Type: Application
    Filed: January 14, 2013
    Publication date: January 9, 2014
    Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATION
    Inventors: YASUYUKI GOTOH, SUBARU KAWASAKI, NORIKATSU HATTORI
  • Patent number: 8613868
    Abstract: The present invention relates to compounds represented by the following Formula I, In Formula I, R1 and R2 are each independently selected from hydrogen, and optionally substituted hydrocarbyl, provided that at least one of R1 and R2 is selected from optionally substituted hydrocarbyl (e.g., tertiary butyl); n is 0, 1 or 2, and each R3 is independently selected from optionally substituted hydrocarbyl; L1 is a divalent linking group, such as a bond or —C(O)O—; each L2 independently represents a flexible segment, such as divalent linear or branched C1-C25 alkyl; each L3 independently represents a rigid segment including, for example, optionally substituted phenylen-1,4-diyl groups; t is from 1 to 4; m and p are each independently from 0 to 4 for each t, provided that the sum of m and p is at least 1 for each t; and E can be, for example, C5-C18 aryl.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: December 24, 2013
    Assignee: Transitions Optical, Inc
    Inventors: Xiao-Man Dai, Ruisong Xu, Meng He, Anil Kumar, Rachael L. Yoest, Chenguang Li
  • Publication number: 20130335942
    Abstract: An alignment film capable of reducing occurrence of alignment disorder in a simple manner, a method of manufacturing the alignment film, a retardation film, a method of manufacturing the retardation film, and a display are provided. An alignment film is configured of an anchor layer and an alignment layer stacked in this order on a base. The alignment layer includes a groove region having a plurality of fine grooves on a surface thereof, and a groove region having a plurality of fine grooves on a surface thereof. The anchor layer provided between the base and the alignment layer is provided with an antistatic function in addition to a function of bringing the alignment layer into close contact with the base.
    Type: Application
    Filed: August 17, 2011
    Publication date: December 19, 2013
    Applicant: Sony Corporation
    Inventors: Akito Kuriyama, Eiki Ohyanagi, Junichi Inoue, Kei Obata
  • Patent number: 8608976
    Abstract: 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: Grant
    Filed: March 10, 2009
    Date of Patent: December 17, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hoi-Lim Kim, Hyun-Ku Ahn, Jun-Woo Lee, Sung-Yi Kim
  • Patent number: 8597727
    Abstract: 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: Grant
    Filed: October 9, 2012
    Date of Patent: December 3, 2013
    Assignee: 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
  • Patent number: 8592009
    Abstract: A liquid crystal display device superior in mass productivity and improved image quality with a higher contrast ratio by decreasing the occurrence of defective display due to the disorder of the initial liquid crystal alignment and realizing stable alignment of liquid crystals, comprising: a pair of substrates 101 and 102, at least one of which is transparent; a liquid crystal layer 110? disposed between the pair of substrates; a group of electrodes formed on at least one of the pair of substrates to apply an electric field to the liquid crystal layer; plural active elements 115 connected to the group of electrodes; and an orientation control film 109 disposed on at least one of the pair of substrates, wherein said orientation control film made of a photosensitive polyimide, a polyamide acid ester and a polyamide acid is given orientation control ability by being irradiated with substantially linearly polarized light.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: November 26, 2013
    Assignees: Hitachi Display, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Masaki Matsumori, Yasushi Tomioka, Noboru Kunimatsu
  • Patent number: 8574689
    Abstract: There are provided an optical compensation film including an alignment film whose adhesiveness to a substrate and a liquid crystal layer and alignment property are excellent when a novel substrate is used to solve the problem regarding deteriorated durability being caused when a retardation film including a liquid crystal film is used under a hot and humid environment, and an integrated polarizing plate comprising the same. The O-plate includes a substrate; an alignment film prepared by coating the substrate with a composition for an alignment film that is composed of polyvinyl alcohol, a multifunctional acrylate monomer, a compatibilizing agent, a photo initiator and a solvent, followed by undergoing drying, curing and rubbing processes; and a splay-aligned liquid crystal film formed on the alignment film.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: November 5, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Du-Hyun Shin, Chang-Hun Yun, Byoung-Kun Jeon, Moon-Soo Park
  • Patent number: 8565058
    Abstract: To provide a liquid crystal alignment film having a sufficient alignment-regulating power and high resistance against blue laser beam and having, at the same time, excellent adhesion, and an optical element using it. A liquid crystal alignment film obtainable by bonding, by chemisorption to a substrate, an alignment-regulating precursor which undergoes anisotropic decomposition by irradiation with polarized ultraviolet light, and irradiating the alignment-regulating precursor bonded to the substrate, with polarized ultraviolet light, to let it undergo anisotropic decomposition and exhibit an alignment-regulating power.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: October 22, 2013
    Assignee: Asahi Glass Company, Limited
    Inventors: Kazuhiko Shiono, Hiroshi Kumai, Yoshiharu Ooi
  • Patent number: 8562863
    Abstract: A glassy cholesteric liquid crystalline composition comprising compounds with a volume-expanding core bound to one or more hybrid chiral-nematic (or Ch) pendant moieties and a method of producing oriented films of such compounds. The Ch pendant moieties are comprised of chiral spacer groups connected to the core via linker groups and nematic groups linked to the chiral spacer groups. Thin-films of the composition are morphologically stable for extended periods of time. Also, the thin-films are able to selectively interact with light from the visible to near-IR wavelength range.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: October 22, 2013
    Assignee: The University of Rochester
    Inventors: Shaw H. Chen, Chunki Kim
  • Publication number: 20130265532
    Abstract: A liquid crystal display device and a method for manufacturing the same are disclosed. In an embodiment of the present invention, a liquid crystal display device and a method of manufacturing the liquid crystal display device includes a first substrate that has a first electrode formed thereon, a second substrate that faces the first substrate, a liquid crystal layer that is formed between the first substrate and the second substrate, and a first alignment layer that is formed on the first substrate and is in contact with the liquid crystal layer. Here, the first alignment layer includes a first alignment base layer that is photoaligned, and a first alignment controlling layer that is extended from the inside of the first alignment base layer.
    Type: Application
    Filed: May 22, 2013
    Publication date: October 10, 2013
    Inventor: Jae-Hoon KIM
  • Patent number: 8545717
    Abstract: The present invention relates to a composition comprising a curable dichroic dye and a curable liquid crystal compound, which are used to prepare an optical component that is vertically oriented to give a narrow viewing angle, to form an optical component, and an optical component comprising an optical component layer prepared using the same. There is provided a composition for forming an optical component comprising 0.1-90 parts by weight of a dichroic dye and 10-98.85 parts by weight of a curable liquid crystal compound, and there is also provided an optical component comprising an optical component layer in which a curable liquid crystal compound and a curable dichroic dye are vertically oriented.
    Type: Grant
    Filed: July 4, 2008
    Date of Patent: October 1, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Yong Il Cho, Dae Hee Lee, Sin Young Kim, Hee Jean Lee, Su Young Ryu
  • Patent number: 8535769
    Abstract: Since a polymerizable liquid crystal compound represented by the general formula (1) produces polymers exhibiting high optical anisotropy and high chemical resistance, and the optical anisotropy thereof exhibits low wavelength dependence, polymers obtained from a polymerizable liquid crystal composition comprising said polymerizable liquid crystal compound are useable as an optically anisotropic film for polarizers, wave plates, and the like, and are particularly best used in pattern formation that uses photolithography in air. (n represents an integer in the range of 3 to 10, m represents an integer in the range of 0 to 5, and q represents an integer in the range of 1 to 2.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: September 17, 2013
    Assignee: Nissan Chemical Industries, Ltd.
    Inventor: Daniel Antonio Sahade
  • Patent number: 8531391
    Abstract: An input device includes an upper sheet having a resistive film formed on a lower surface thereof and a lower substrate disposed in a co-planar relationship below the upper sheet and spaced apart from the upper sheet by a gap, where the lower substrate has a resistive film formed on an upper surface thereof. The lower substrate has opposite side edge portions disposed along a longitudinal axis of the lower substrate, and the side edge portions have an incline or taper along a thickness axis of the lower substrate. A pair of lower electrodes are formed on the resistive film of the lower substrate, and are disposed parallel to the side edge portions of the lower substrate, such that when pressure is applied to an operation portion of the upper sheet, the upper sheet flexes toward the lower substrate, and planar coordinates of the operation portion are determined based on a voltage between the pair of lower electrodes.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: September 10, 2013
    Assignee: ALPS Electric Co., Ltd.
    Inventor: Takeshi Watanabe
  • Patent number: 8530008
    Abstract: A liquid crystal display (LCD) device includes at least one substrate; and an alignment layer over the substrate, wherein the alignment layer includes material having a main chain adapted to be aligned by a rubbing process and a photo-reactive side chain adapted to be aligned by irradiation.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: September 10, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Su Hyun Park
  • Patent number: 8512819
    Abstract: Provided is a liquid crystal display device includes: a first substrate (6); a second substrate (7); a liquid crystal layer (LC); a first alignment film (606) placed on the first substrate; a second alignment film (705) placed on the second substrate; and at least one of: a transparent layer (610) contacting the first alignment film on the other side of the liquid crystal layer and being lower in volume resistivity than the first alignment film; and a transparent layer (710) contacting the second alignment film on the other side of the liquid crystal layer and being lower in volume resistivity than the second alignment film, wherein the transparent layer contains polysiloxane expressed by Chemical Formula 1: where R1 and R2 each represent an alkyl group or alkoxy group having 1 to 3 carbon atoms, or a hydroxyl group, and at least 30% of hydroxyl groups are contained.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: August 20, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Masaki Matsumori, Yasushi Tomioka
  • Patent number: 8501286
    Abstract: The present invention discloses a reactive monomer of liquid crystal. The reactive monomer of liquid crystal is added with at least one fluoro group. Because hydrocarbon bonds of a side chain of polyimide surface of an alignment film has a fluorophobic effect, the fluoro group of the reactive monomer of liquid crystal can lower the interaction between the polyimide surface of the alignment film and the reactive monomer of liquid crystal to thus evenly deposit the liquid crystal composition containing the reactive monomers of liquid crystal onto the polyimide surface of the alignment film. Thus, it can avoid from occurring the phenomenon of drop Mura defect occurred during implementing the ODF technology.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: August 6, 2013
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Chung-Ching Hsieh, Chengming He
  • Patent number: 8496848
    Abstract: A birefringent film which comprises a compound having a proton-accepting group and a compound having a proton-donating group; and a birefringent film which comprises a compound having a proton-accepting group and a proton-donating group. The proton-accepting group and proton-donating group are combined with each other through intermolecular hydrogen bonding.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: July 30, 2013
    Assignees: Sumitomo Chemical Company, Limited, The University of Tokyo
    Inventors: Motohiro Yamahara, Takashi Kato
  • Patent number: 8497001
    Abstract: A first substrate and a second substrate are provided. An alignment process is performed on a surface of the first substrate and a surface of the second substrate respectively. A liquid crystal mixture is prepared, where the liquid crystal mixture includes a liquid crystal molecule and a liquid crystal monomer having a functional group of diacrylates, and the liquid crystal monomer having the functional group of diacrylates occupies 0.01-2 wt % of the liquid crystal mixture. The first substrate and the second substrate are assembled, and the liquid crystal mixture is filled therebetween. A polymerization curing process is performed such that the liquid crystal monomer having the functional group of diacrylates is polymerized to respectively form a liquid crystal polymer film on the aligned surfaces of the first and second substrates. The method enhances anchoring energy and reduces problems of V-T shift, surface gliding, and residual image.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: July 30, 2013
    Assignees: Taiwan TFT LCD Association, Chunghwa Picture Tubes, Ltd., AU Optronics Corporation, Hannstar Display Corporation, Chi Mei Optoelectronics Corporation, Industrial Technology Research Institute
    Inventors: Cho-Ying Lin, Ding-Jen Chen, Hui-Min Lin, Yang-Ching Lin
  • Publication number: 20130188120
    Abstract: The present invention relates to a light-sensitive compound, a polymer formed by using the compound, and a production method of the compound and polymer. More particularly, the present invention relates to a unit compound that exhibits light-sensitivity with respect to three different wavelengths, a polymer having light-sensitive, which is polymerized by using the unit compound as a monomer, and a production method of the compound and polymer. The light-sensitive compound and the polymer according to the present invention may be usefully applied to an optical film.
    Type: Application
    Filed: June 30, 2010
    Publication date: July 25, 2013
    Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Dong Hack Suh, Won Jung Kim, Yun Cheol Yang, Dong Wan Han, Hong Jun Ahn, Jun Yong Hwang, Kyung Mi Lee, Hyun Jin Lee, Seong Heun Cho, Ga Young Han
  • Patent number: 8491973
    Abstract: A photo-alignment material, a liquid crystal display device using the photo-alignment material, and a manufacturing method. The photo-alignment material is a polymer having a photo-reactive ethenyl group on a main chain. When used as a photo-alignment layer, the photo-alignment material enables improved alignment stability against external shocks, light, and heat. The liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer formed between the first and second substrates, and a photo-alignment layer formed at least on the first substrate, with the photo-alignment layer formed from a photo-alignment material having an ethenyl group at a main chain.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: July 23, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Mi Sook Nam
  • Patent number: 8487069
    Abstract: Disclosed is a liquid crystal photo-alignment agent including polyamic acid or a polyimide including a first structural unit derived from a photo-diamine represented by the following Chemical Formula 1, a second structural unit represented by the following Chemical Formula 2 or a polymer compound combination thereof, and a solvent. In Chemical Formulae 1 and 2, each substituent is the same as defined in the detailed description.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: July 16, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Jae-Deuk Yang, Hee-Young Oh, Myoung-Youp Shin, Mi-Ra Im, Guk-Pyo Jo, Eun-Ha Kim
  • Patent number: 8481146
    Abstract: A polymerizable mixture for ink jetting, having liquid crystalline phases comprising the following components: a) 50-80 wt % mono-functional LCP's, b) 10-50 wt % of a higher functional LCP's, f) 0.01-5 wt % initiators, preferably below 1% g) 0.01-5 wt % inhibitors, preferably below 1% h) 0-20 wt % additives, preferably below 10 wt %, with the provision that the total amount of the components is 100 wt %, characterized in that the polymerizable mixtures has a viscosity smaller than 0.015 Pa s at 100° C. and yet remaining thermally stable.
    Type: Grant
    Filed: March 8, 2008
    Date of Patent: July 9, 2013
    Assignee: Technische Universiteit Eindhoven
    Inventors: Cees Bastiaansen, Thijs Meijer, Robert Jan Vrancken
  • Patent number: 8480925
    Abstract: A depolarizing film of the present invention comprises a film containing at least one liquid crystal compound, wherein the liquid crystal compound comprises a liquid crystal compound (1) that satisfies the relation: 0.05??n?0.5, with the proviso that ?n=ne?no, ne represents an extraordinary-ray refractive index, and no represents an ordinary-ray refractive index, and the film has a haze value of 15% or less and a thickness of 1 ?m to 10 ?m.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: July 9, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Takehito Fuchida, Minoru Miyatake, Takashi Kamijo, Hideyuki Yonezawa
  • Patent number: 8481130
    Abstract: The invention relates to an alignment layer with improved adhesion to liquid crystal (LC) films, to a precursor material used for the preparation of such a layer, to a laminate comprising such a layer and at least one LC polymer film, and to the use of the alignment layer and the laminate for optical, electrooptical, decorative or security uses and devices, wherein the alignment layer and the precursor material comprise at least one reactive mesogen in monomeric, oligomeric or polymeric form.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: July 9, 2013
    Assignee: MERCK PATENT GmbH
    Inventors: Richard Harding, Alison Linda May, Simon Greenfield, Johan Lub, Ciska Doornkamp, Rene Theodorus Wegh
  • Publication number: 20130163399
    Abstract: To provide a liquid crystal alignment film having a sufficient alignment-regulating power and high resistance against blue laser beam and having, at the same time, excellent adhesion, and an optical element using it. A liquid crystal alignment film obtainable by bonding, by chemisorption to a substrate, an alignment-regulating precursor which undergoes anisotropic decomposition by irradiation with polarized ultraviolet light, and irradiating the alignment-regulating precursor bonded to the substrate, with polarized ultraviolet light, to let it undergo anisotropic decomposition and exhibit an alignment-regulating power.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 27, 2013
    Applicant: Asahi Glass Company, Limited
    Inventor: Asahi Glass Company, Limited
  • Patent number: 8470412
    Abstract: Disclosed is a liquid crystal alignment agent that includes a polymer comprising polyamic acid including a repeating unit represented by the following Chemical Formula 1, polyimide including a repeating unit represented by the following Chemical Formula 2, or a combination thereof. In Chemical Formulae 1 and 2, X1, X2, Y1 and Y2 are the same in the detailed description.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: June 25, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Myoung-Youp Shin, Eun-Ha Kim, Jae-Deuk Yang, Yong-Sik Yoo, Guk-Pyo Jo, Jung-Gon Choi
  • Patent number: 8470411
    Abstract: A photopolymer mixture is capable of use for a liquid crystal alignment layer. An alignment layer is formed from such a photopolymer mixture. The mixture comprises at least two polymerisable materials which are blended together in proportion so as to give a predetermined, preferably low, surface energy. A low surface energy, e.g., less than 4×10?2 N/m, can result in an alignment layer which imparts a particular orientation to liquid crystal molecules with out requiring any post-cure treatments. The polymerisable materials may be monomers, oligomers, or diluents that form long chain molecules when cured, and the mixture may contain additives to lower the overall surface energy.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: June 25, 2013
    Assignee: ZBD Displays Ltd.
    Inventors: Richard M Amos, Guy P Bryan-Brown, John C Jones, Emma L Wood
  • Publication number: 20130141681
    Abstract: A laminate comprising a transparent support and, as formed on the transparent support, a patterned alignment control layer containing a first alignment control region and a second alignment control region each having an alignment control surface, in which the two regions differ from each other in point of the composition thereof and in point of the alignment-controlling capability thereof, in which the individual alignment control surfaces are alternately positioned in the patterned alignment control layer, and in which the alignment control surfaces of the first alignment control region and the second alignment control region can control liquid crystals in such a manner that the long axes of the aligned liquid crystals could be vertical to each other in the plane parallel to the alignment control surfaces.
    Type: Application
    Filed: January 29, 2013
    Publication date: June 6, 2013
    Applicant: FUJIFILM Corporation
    Inventor: FUJIFILM Corporation