Alignment Layer Of Specified Composition Patents (Class 428/1.2)
  • Patent number: 9723769
    Abstract: An alignment film includes a first pre-tilt functional group, a second pre-tilt functional group and a first vertical alignment functional group, which are linked to polysiloxane on a substrate. The first vertical alignment functional group includes a cyclic compound and is aligned substantially perpendicularly to the substrate. The first pre-tilt functional group is cross-linked to the second pre-tilt functional group and tilted with respect to the substrate.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: August 1, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Taek-Joon Lee, Keun-Chan Oh, Jun-Hyup Lee, Sang-Gyun Kim, Jang-Hyun Kim, Tae-Hoon Kim
  • Patent number: 9720286
    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: Grant
    Filed: April 20, 2016
    Date of Patent: August 1, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jae-Hoon Kim
  • Patent number: 9715146
    Abstract: An IPS system liquid crystal display device is provided to prevent reliability for a seal portion from lowering, which is caused by the fact that an overcoat film at a portion where an alignment film is not present is deteriorated by ultraviolet light during optical alignment process. An alignment film 113 subjected to optical alignment is formed above each surface of a TFT substrate 100 and of a counter substrate 200, the alignment film 113 on the side of the TFT substrate 100 is not formed in the seal portion, and a sealant 150 is bonded to an inorganic insulating film 109. On the side of the counter substrate 200, the alignment film 113 is formed on an overcoat film 203 and the sealant 150 is bonded to the alignment film 113.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: July 25, 2017
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., LTD
    Inventors: Hidehiro Sonoda, Noboru Kunimatsu, Chikae Matsui, Takashi Yamamoto
  • Patent number: 9644071
    Abstract: Bis(azo-benzene) diamine monomers and a method of synthesizing the monomers are provided. The bis(azo-benzene) diamine monomers, in combination with amine reactive monomers, form polymers, such as polyimides and copolyimides, having photomechanical and thermomechanical properties.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: May 9, 2017
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Loon-Seng Tan, David Huabin Wang, Jeong Jae Wie, Timothy J. White
  • Patent number: 9575232
    Abstract: Provided is a method capable of producing an optically anisotropic laminated body in which defects are hardly generated so that light leakage is scarcely caused. This method is a method for producing an optically anisotropic laminated body including a substrate, an oriented film, and an optically anisotropic film, and has steps of: applying, to a surface of the substrate, an oriented-film-forming composition including an oriented-film-forming material and a solvent and having a viscosity of 4 mPa·s or less at 25° C., and drying the resultant to form the oriented film; and then applying, onto the resultant oriented film, an optically-anisotropic-layer-forming composition including a polymerizable liquid crystal compound, and drying the resultant to orient the polymerizable liquid crystal compound vertically to the surface of the substrate to form the optically anisotropic film.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: February 21, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Tadahiro Kobayashi
  • Patent number: 9453951
    Abstract: The present invention provides a retardation film web having sufficient reversed wavelength dispersion characteristics and favorable for film lamination according to a roll-to-roll system. A retardation film web of the present invention includes a polycarbonate resin or a polyester carbonate resin, an orientation angle ? which is an angle between a slow axis and a width direction satisfies the following formula (I), and a ratio of an in-plane retardation R450 measured at a wavelength of 450 nm to an in-plane retardation R550 measured at a wavelength of 550 nm satisfies the following formula (II): 38°???52°??(I) R450/R550<1??(II).
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: September 27, 2016
    Assignees: NITTO DENKO CORPORATION, MITSUBISHI CHEMICAL CORPORATION
    Inventors: Takashi Shimizu, Kazuki Uwada, Tadashi Kojima, Nao Murakami, Tomohiko Tanaka, Shingo Namiki
  • Patent number: 9417369
    Abstract: The present invention provides a retardation film web having sufficient reversed wavelength dispersion characteristics and favorable for film lamination according to a roll-to-roll system. A retardation film web of the present invention includes a polycarbonate resin or a polyester carbonate resin, an orientation angle ? which is an angle between a slow axis and a width direction satisfies the following formula (I), and a ratio of an in-plane retardation R450 measured at a wavelength of 450 nm to an in-plane retardation R550 measured at a wavelength of 550 nm satisfies the following formula (II): 38°???52°??(I) R450/R550<1??(II).
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: August 16, 2016
    Assignees: NITTO DENKO CORPORATION, MITSUBISHI CHEMICAL CORPORATION
    Inventors: Takashi Shimizu, Kazuki Uwada, Tadashi Kojima, Nao Murakami, Tomohiko Tanaka, Shingo Namiki
  • Patent number: 9366906
    Abstract: The present invention relates to photoreactive compounds that are particularly useful in materials for the alignment of liquid crystals.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: June 14, 2016
    Assignee: ROLIC AG
    Inventors: Frederic Lincker, Izabela Bury S. Pires, Sabrina Chappellet, Patricia Scandiucci De Freitas, Mohammed Ibn-Elhaj, Qian Tang, Satish Palika, Masato Hoshino, Jean-Francois Eckert
  • Patent number: 9360709
    Abstract: A TFT substrate and a counter substrate are bonded via a seal material. Alignment films are applied to entire surfaces of the TFT substrate and the counter substrate so as to realize even thickness of the alignment film. This allows a display region to be formed up to the area around the seal material. The alignment film is photo-alignment processed. An organic film formed of the material which is not photo-aligned is interposed between the alignment film and the seal material. High bonding strength between the organic film and the seal material improves reliability of a seal portion as well as reduces a frame region.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: June 7, 2016
    Assignee: Japan Display Inc.
    Inventors: Noboru Kunimatsu, Yasushi Tomioka, Hidehiro Sonoda, Yosuke Hyodo, Yasuo Imanishi
  • Patent number: 9348077
    Abstract: A method of manufacturing a patterned retarder includes forming a retarder material layer by applying a retarder material to a substrate; drying the retarder material layer at a first temperature; exposing the retarder material layer to linearly-polarized UV, wherein the retarder material layer has an optical anisotropic property; and heat treating the retarder material layer at a second temperature higher than the first temperature to increase the optical anisotropic property of the retarder material layer.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: May 24, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Su-Bin Lee, Su-Hyun Park, Sang-Wook Lee, Jung-Min Lee, Byoung-Har Hwang
  • Patent number: 9329426
    Abstract: The present application relates to an optical device. The optical device according to one embodiment may be a light-dividing device, for example, a device that can divide incident light into at least two kinds of light having different polarization states. For example, the optical device can be used to realize a stereoscopic image.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: May 3, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Sin Young Kim, Moon Soo Park, Seung Hun Chae, Su Young Ryu, Da Mi Lee
  • Patent number: 9223163
    Abstract: Provided is a method of producing a film including: a coating step of coating, on a substrate, a polymerizable liquid crystal composition containing a polymerizable liquid crystal compound, an alignment controlling agent capable of controlling alignment of the polymerizable liquid crystal compound, a polymerization initiator and coated film a solvent; and a drying step of drying, wherein the alignment controlling agent is a compound represented by formula (1) below, and the alignment controlling agent is added in 0.005 to 0.2 parts by mass relative to 100 parts by mass of the polymerizable liquid crystal compound: In general formula (1), each of L1 and L2 represents an alkylene group having 1 to 6 carbon atoms that may be substituted with a fluorine atom or the like, and n1 and n2 represents integers of 3 or more.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: December 29, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Wataru Majima, Kazuhiro Oki, Hirotoshi Andou
  • Patent number: 9212806
    Abstract: Luminance adjustment films that include at least one microcapsule containing at least one photoisomerizable compound which selectively decreases luminance of visible light in reaction to ultraviolet light having an intensity distribution which reflects a luminance distribution of the visible light are described.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: December 15, 2015
    Assignee: Empire Technology Development LLC
    Inventor: Masahiro Ueda
  • Patent number: 9193861
    Abstract: There is provided a material that exhibits high solvent resistance after the formation of a cured film, excellent photo-alignment capability relative to a polymerizable liquid crystal, satisfactory heat resistance, and high transparency and moreover, that can be dissolved in a glycol-based solvent, a ketone-based solvent, or a lactic acid ester-based solvent that is applicable to the production of an overcoating of a color filter, during the formation of the cured film. A composition for forming thermoset film having photo-alignment properties and containing a component (A) that is a compound having a photo-aligning group and a hydroxy group, a component (B) that is a melamine formaldehyde resin, and a component (C) that is a crosslinker.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: November 24, 2015
    Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Tadashi Hatanaka, Mitsumasa Kondo
  • Patent number: 9157029
    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: Grant
    Filed: November 18, 2014
    Date of Patent: October 13, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sin Young Kim, Moon Soo Park, Dae Hee Lee, Da Mi Lee
  • Patent number: 9157028
    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: Grant
    Filed: November 18, 2014
    Date of Patent: October 13, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sin Young Kim, Moon Soo Park, Dae Hee Lee, Da Mi Lee
  • Patent number: 9151989
    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: March 27, 2014
    Date of Patent: October 6, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Dai-Seung Choi, Heon Kim, Sung-Ho Chun, Sung-Joon Oh, Dong-Woo Yoo, Yu-Chan Kang
  • Patent number: 9151988
    Abstract: Disclosed herein are a cyclic olefin compound, a photoreactive polymer, and an alignment layer comprising the photoreactive polymer, where the cyclic olefin compound can be used to provide the photoreactive polymer having not only excellences in liquid crystal alignment and alignment rate but also readiness for change in the alignment direction depending on the polarization direction.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: October 6, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Dong-Woo Yoo, Sung-Ho Chun, Dai-Seung Choi, Sung-Kyoung Lee
  • Patent number: 9080100
    Abstract: To provide a polymerizable liquid crystal composition showing good coating properties even when a support substrate has a low solvent resistance, and having uniform alignment properties. A polymerizable liquid crystal composition is prepared by containing as components an acrylate polymerizable liquid crystal compound, a compound represented by formula (3), and a non-liquid crystalline compound having an acryloyl group or a methacryloyl group as a reactive moiety, and having a functional group including a hydroxyl group as a reactive dilution solvent in one molecule. When the polymerizable liquid crystal composition is applied onto the support substrate, dried and irradiated with light, the polymerizable liquid crystal composition showing good coating properties even when the support substrate has the low solvent resistance, and having the uniform alignment properties can be obtained.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: July 14, 2015
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventor: Yoshiharu Hirai
  • Patent number: 9046723
    Abstract: A liquid crystal display and a manufacturing method are provided. A liquid crystal display according to an exemplary embodiment of the present invention includes: a first substrate; a second substrate facing the first substrate; a liquid crystal layer interposed between the first substrate and the second substrate, and including liquid crystal molecules; a first electrode positioned on the first substrate; an insulating layer positioned on the first electrode; a second electrode positioned on the insulating layer; and a third electrode positioned on the second substrate, wherein the second electrode includes a plurality of branches and a slit between neighboring ones of the branches, and a width of the slit is more than about two times to less than about five times a width of its corresponding branches.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: June 2, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Ho Hong, Oh Jeong Kwon, Hyeok Jin Lee
  • Publication number: 20150131032
    Abstract: A compensation film includes a first retardation layer including a polymer having negative birefringence, and a second retardation layer including a liquid crystal having positive birefringence, where the first retardation layer has an in-plane retardation (Re1) of 320 nm to 1050 nm for incident light having wavelength of 550 nm, the second retardation layer has an in-plane retardation (Re2) of 180 nm to 910 nm for the incident light, an entire in-plane retardation (Re0) of the first and second retardation layers for the incident light is a difference between the in-plane retardations of the first and second retardation layers, an angle between slow axes of the first and second retardation layers is 85 to 95 degrees, and the entire in-plane retardation (Re0) of the first and second retardation layers for the wavelength of 450 nm, 550 nm and 650 nm satisfies Re0 (450 nm)<Re0 (550 nm)<Re0 (650 nm).
    Type: Application
    Filed: April 8, 2014
    Publication date: May 14, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyung Jun KIM, Sang ah GAM, Myung Sup JUNG, Hyun-Seok CHOI
  • Publication number: 20150131031
    Abstract: A compensation film includes: a first retardation layer including a polymer; a second retardation layer including a liquid crystal having positive birefringence; and a compensation layer including a liquid crystal having a vertical alignment property, where an angle between slow axes of the first and second retardation layers is in a range of about 85 to about 95 degrees, an entire in-plane retardation (Re0) of the first retardation layer, the second retardation layer and the compensation layer for wavelengths of 450 nm, 550 nm and 650 nm satisfy the following inequation: Re0(450 nm)<Re0(550 nm)<Re0(650 nm), an in-plane retardation (Re3) of the compensation layer for the incident light having a wavelength of about 550 nm is in a range of about zero to about 50 nm, and a thickness direction retardation (Rth3) of the compensation layer for the incident light is less than zero.
    Type: Application
    Filed: March 13, 2014
    Publication date: May 14, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyung Jun KIM, Sang ah Gam, Myung Sup JUNG, Hyun-Seok CHOI
  • Patent number: 9028926
    Abstract: An IPS type liquid crystal display device superior in mass productivity and improved in image quality with a higher contrast ratio by decreasing the occurrence of defective display due to the disorder of the initial liquid crystal alignment by the liquid orientation control film and realizing stable alignment of liquid crystals comprises: a pair of substrates, at least one which is transparent; a liquid crystal layer 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 connected to the group of electrodes; and an orientation control film disposed on at least one of the pair of substrates, wherein said orientation control film is made of a photosensitive polyimide and a polyamide acid ester and is given orientation control ability by being irradiated with substantially linearly polarized light.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: May 12, 2015
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Masaki Matsumori, Yasushi Tomioka, Noboru Kunimatsu
  • Publication number: 20150125631
    Abstract: Disclosed therein are an optical film and a display device comprising the same, where the optical film comprises a first optically anisotropic layer including a liquid crystal compound and a second optically anisotropic layer including a repeating unit having a photoreactive group, thereby securing improved photoreaction rate and excellent liquid crystal alignment.
    Type: Application
    Filed: May 9, 2013
    Publication date: May 7, 2015
    Inventors: Mi Ra Hong, Sung-Ho Chun, Dai Seung Choi, Kyung Chang Seo, Dong Woo Yoo
  • Patent number: 9023440
    Abstract: The invention provides a liquid crystal alignment film, a method for preparing the same and a liquid crystal display device comprising the same. The alignment film comprises a polyimide obtained by reacting a compound as shown in Formula 2 or Formula 3 with an aromatic diamine as shown in Formula 1, wherein the R1, R2, R3, R4, R5, R6, R7, R1?, R2?, R3?, R4?, R5?, R6?, R7?, or R8? is H, an alkyl, an aralkyl or a haloalkyl, and the Ar is an aryl. The liquid crystal alignment film has a tactic spatial configuration, decreases the ?-? attractive interaction between the polyimide backbones, allows the directional and homogenous alignment of the liquid crystal molecules on the surface of the polyimide, and thereby increases the contrast of the liquid crystal display.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: May 5, 2015
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Ang Xiao, Haibo Zhu, Sunghun Song, Wei Li, Zhiyong Liu
  • Patent number: 9019453
    Abstract: A liquid crystal display includes a plurality of pixels, a first substrate, a second substrate, and a liquid crystal layer disposed between the first and second substrates. The first substrate includes a first base substrate and a pixel electrode provided on the first base substrate to correspond to each of the pixels. The second substrate includes a second base substrate facing the first base substrate and a common electrode provided on the second base substrate. The common electrode forms an electric field having an equipotential surface substantially parallel to an upper surface of the first base substrate in cooperation with the pixel electrode. The liquid crystal layer is disposed between the pixel electrode and the common electrode and includes a liquid crystal composition having an anisotropic dielectric constant equal to or smaller than ?2.9 and equal to or larger than ?1.7.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: April 28, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soon Joon Rho, Jun Ha Park, Jihong Bae, Hyelim Jang, Hyeokjin Lee
  • Patent number: 9011987
    Abstract: A liquid crystal display including a first substrate; a second substrate facing the first substrate; a thin film transistor disposed on the first substrate; an organic layer disposed on the thin film transistor; a pixel electrode disposed on the organic layer; a lower alignment layer disposed on the pixel electrode; a common electrode disposed on the second substrate; and an upper alignment layer disposed on the common electrode, wherein a first free radical included in the organic layer and a second free radical included in at least one of the lower alignment layer and the upper alignment layer are radical bonded.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: April 21, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Hyup Lee, Sang Gyun Kim, Jang-Hyun Kim, Tae Hoon Kim, Seung Wook Nam, Keun Chan Oh, Taek Joon Lee
  • Patent number: 8999462
    Abstract: The present invention provides a photosensitive monomer of which hydrogen atoms of benzene ring of a hard core are substituted by fluorine atoms to increase the electronegativity of the hard core, so that the curing voltage of the curing process is reduced. The photosensitive monomer of the present invention not only reduces the curing voltage and curing time of the curing process of liquid crystal panels, but also increases the pretilt angle of liquid crystal molecules to reduce the response time of a liquid crystal display, so that image sticking and MURA phenomenon are reduced.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: April 7, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Sikun Hao, Chung-Ching Hsieh, Chung Yi Chiu
  • Publication number: 20150093520
    Abstract: Disclosed therein are a cyclic olefin compound, a photoreactive polymer, and an alignment layer comprising the photoreactive polymer, where the cyclic olefin compound can be used to provide the photoreactive polymer having not only excellences in liquid crystal alignment and alignment rate but also readiness for change in the alignment direction depending on the polarization direction.
    Type: Application
    Filed: December 11, 2014
    Publication date: April 2, 2015
    Inventors: Dong-Woo Yoo, Sung-Ho Chun, Dai Seung Choi, Sung-Kyoung Lee
  • Patent number: 8993074
    Abstract: There is provided a liquid crystal display device including a liquid crystal display element including a first alignment film and a second alignment film provided on opposing surfaces of a pair of substrates, and a liquid crystal layer arranged between the first alignment film and the second alignment film and including crystal molecules having negative dielectric constant anisotropy. At least the first alignment film includes a compound in which a polymer compound having a first side chain and a second side chain is crosslinked or polymerized. The first side chain has a crosslinkable functional group or a polymerizable functional group. The second side chain has a structure inducing dielectric anisotropy. The liquid crystal molecules are pretilted by the first alignment film.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: March 31, 2015
    Assignee: Sony Corporation
    Inventors: Masashi Miyakawa, Shunichi Suwa, Tadaaki Isozaki
  • Publication number: 20150072086
    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: November 18, 2014
    Publication date: March 12, 2015
    Inventors: Sin Young KIM, Moon Soo PARK, Dae Hee LEE, Da Mi LEE
  • Patent number: 8968983
    Abstract: A photoresist composition, a method of forming a pattern using the photoresist composition, and a method of manufacturing a display substrate are disclosed. A photoresist composition includes an alkali-soluble resin, a quinone diazide-based compound, a multivalent phenol-based compound, and a solvent. Therefore, photosensitivity for light having a wavelength in a range of about 392 nm to about 417 nm may be improved, and reliability of forming a photo pattern and a thin film pattern using the photoresist composition may be improved.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: March 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Cha-Dong Kim, Sang Hyun Yun, Jung-In Park, Su-Yeon Sim, Hi-Kuk Lee, Sang-Tae Kim, Yong-Il Kim, Shi-Jin Sung, Eun-Sang Lee, Sung-Yeol Jin
  • Patent number: 8968596
    Abstract: The present invention provides a liquid crystal reactive monomer on a polyimide surface of an alignment film and a liquid crystal panel. The liquid crystal reactive monomer has a hard core and is contained in a liquid crystal composition. The liquid crystal reactive monomer is represented by the formula (I) or the formula (II), and the molecular weight thereof is greater than or equal to 300. The solubility of the liquid crystal RMs is significantly improved in a liquid crystal matrix while the returning force of liquid crystal molecules is increased, so as to solve the image sticking issue, increase the polymerization capacity of the liquid crystal molecules, raise the curing speed of the curing reaction between the liquid crystal RMs and the polyimide surface and shorten the curing time, so that the purpose of energy saving and carbon reduction can be achieved.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: March 3, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Chung-Ching Hsieh
  • Patent number: 8962107
    Abstract: 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: Grant
    Filed: January 7, 2010
    Date of Patent: February 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Keun-Chan Oh, Jae-Jin Lyu, Ji-Won Sohn, Seon-Ah Cho
  • Patent number: 8962106
    Abstract: An alignment film includes a first pre-tilt functional group, a second pre-tilt functional group and a first vertical alignment functional group, which are linked to polysiloxane on a substrate. The first vertical alignment functional group includes a cyclic compound and is aligned substantially perpendicularly to the substrate. The first pre-tilt functional group is cross-linked to the second pre-tilt functional group and tilted with respect to the substrate.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: February 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Taek-Joon Lee, Keun-Chan Oh, Jun-Hyup Lee, Sang-Gyun Kim, Jang-Hyun Kim, Tae-Hoon Kim
  • Patent number: 8945692
    Abstract: A method of manufacturing a liquid crystal display device with which response characteristics are able to be easily improved without using major equipment is provided. The method of manufacturing a liquid crystal display device includes steps of forming a first alignment film 22 including a polymer compound having a crosslinkable functional group as a side chain on one substrate of a pair of substrates 20 and 30; forming a second alignment film 32 on the other substrate of the pair of substrates 20 and 30; arranging the pair of substrates 20 and 30 so that the first alignment film 22 and the second alignment film 32 are opposed to each other, and sealing a liquid crystal layer 40 containing a liquid crystal molecule 41 having negative dielectric constant anisotropy between the first alignment film 22 and the second alignment film 32; and bridging the polymer compound to give pretilt to the liquid crystal molecule 41 after sealing the liquid crystal layer 40.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: February 3, 2015
    Assignee: Sony Corporation
    Inventors: Shunichi Suwa, Yuichi Inoue, Ryo Ogawa, Tsuyoshi Kamada, Masashi Miyakawa, Tadaaki Isozaki, Masahiko Nakamura
  • Publication number: 20150022764
    Abstract: There is provided a phase difference film which includes a, an intermediate layer, and a phase difference layer to which an alignment state of a liquid crystal material is fixed in this order, in which the substrate contains cellulose acylate in which an average substitution degree DS of an acyl group satisfies 2.0<DS<2.6, specific polycondensation ester, or specific sugar ester, the intermediate layer contains a polyvinyl alcohol resin or an acrylic resin having a polar group, and the phase difference layer contains a liquid crystal compound which is homeotropically aligned and has specific optical characteristics.
    Type: Application
    Filed: October 8, 2014
    Publication date: January 22, 2015
    Applicant: FUJIFILM Corporation
    Inventors: Jun TAKEDA, Yuki MATSUDA, Nobuhiko ICHIHARA
  • Patent number: 8906473
    Abstract: A liquid crystal display device includes: a pair of substrates at least one of which is transparent; a liquid crystal layer disposed between the pair of substrates; an electrode group formed on at least one substrate of the pair of substrates, for applying an electric field to the liquid crystal layer; a plurality of active elements connected to the electrode group; and a liquid crystal alignment film disposed on at least one substrate of the pair of substrates, in which the liquid crystal alignment film, which is formed by a photo-alignment process, contains polyimide formed using tetracarboxylic acid dianhydride and/or diamine each having a specific chemical structure.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: December 9, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Shoichi Uchino, Noboru Kunimatsu, Hidehiro Sonoda, Chikae Matsui, Yuko Matsumoto, Masaki Matsumori, Yasushi Tomioka, Jun Tanaka
  • Patent number: 8877303
    Abstract: To form an optical alignment film having large anchoring strength and suppress an AC afterimage of a liquid crystal display device, in a liquid crystal display device of an IPS mode. In an alignment film material subjected to optical alignment processing, polyimide which becomes a rigid high molecule and polyimide which becomes a flexible high molecule are mixed and used. The material of the present invention can easily rotate oligomer after irradiating polarized ultraviolet rays and improve a UV-absorbed two-color ratio of an alignment film. Accordingly, an anchoring strength for liquid crystals by the alignment film is large to suppress an AC afterimage.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: November 4, 2014
    Assignee: Japan Display Inc.
    Inventors: Shoichi Uchino, Noboru Kunimatsu
  • Publication number: 20140313581
    Abstract: A long patterned alignment film is provided, from which a large number of patterned retardation films can easily be produced, having an alignment layer which is in a long form and comprises an optical alignment material, wherein the alignment layer includes a first alignment region for causing a rodlike compound having a refractive index anisotropy to be arranged in a certain direction, and a second alignment region for causing the rodlike compound to be arranged in a direction different from the certain direction of the first alignment region.
    Type: Application
    Filed: September 13, 2012
    Publication date: October 23, 2014
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Keiji Kashima, Hiroyuki Nishimura, Masanori Fukuda, Yuugo Noritake
  • Patent number: 8865273
    Abstract: A photoalignment compound is represented by the following Chemical Formula 1, wherein “x” represents an integer in a range of 1 to 4, each of R1 and R2 represents —(CH2)n—, “n” represents an integer in a range of 1 to 6, at least one of the (—CH2-)s in R1 is replaceable with R3 represents —(CH2)mCH3, “m” represents an integer in a range of 1 to 12, each hydrogen atom of R3 is replaceable with F or Cl, R4 represents an amino group, aniline group, carboxy group, hydroxyl group, cyano group, alkylene group, or functional groups being represented by the following Chemical Formulas 2, 3, 4, or 5, each hydrogen atom of Chemical Formula 1 is replaceable with —O(CH2)kCH3, —(CH2)kCH3, F, or Cl, and “k” represents an integer in a range of 1 to 3, or 0.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: October 21, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Chan Jo, Weon-Eik Oii
  • Patent number: 8867002
    Abstract: To provide a photoalignable material that can yield a photoalignable film having a high optical uniformity and no alignment defect, and allows photoalignment with exposure in a short period of time. A photoalignable polymer composition containing a specific photoalignable polymer having a silicone group or a fluorine-substituted alkyl group, and a photoalignable group, and a specific non-photoalignable polymer is manufactured, and the photoalignable film is manufactured by applying the polymer composition onto a base material or the like, drying an applied surface thereon, and irradiating the applied surface with light.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: October 21, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Mayumi Tanabe, Daisuke Ootsuki, Kie Kubouchi
  • Publication number: 20140308462
    Abstract: A problem is, in a liquid crystal film in which an alignment layer and a liquid crystal composition layer having homogeneous alignment are formed on a support substrate, to improve adhesion between the alignment layer and the liquid crystal composition layer, and durability under a severe environment such as high temperature and high humidity. A solution is a non-liquid crystalline polymerizable compound having a radically polymerizable group and a cationically polymerizable group in a molecule is simultaneously used as an antistripping additive in a polymerizable liquid crystal composition layer having homogeneous alignment.
    Type: Application
    Filed: March 20, 2014
    Publication date: October 16, 2014
    Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATION
    Inventor: Kazumi NARA
  • Publication number: 20140248445
    Abstract: A liquid crystal display is provided which is capable of reducing the occurrence of defective display due to variations in the initial alignment direction of a liquid crystal alignment control film in a liquid crystal display of an IPS scheme, realizing the stable liquid crystal alignment, providing excellent mass productivity, and having high image quality with a higher contrast ratio. The liquid crystal display has a liquid crystal layer disposed between a pair of substrates, at least one of the substrates being transparent, and an alignment control film formed between the liquid crystal layer and the substrate. At least one of the alignment control films 109 comprises photoreactive polyimide and/or polyamic acid provided with an alignment control ability by irradiation of substantially linearly polarized light.
    Type: Application
    Filed: May 9, 2014
    Publication date: September 4, 2014
    Applicants: JAPAN DISPLAY INC., PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Yasushi TOMIOKA, Hidetoshi ABE, Katsumi KONDO
  • Patent number: 8801965
    Abstract: The present invention provides a liquid crystal medium composition and a liquid crystal display panel manufactured with same. The liquid crystal medium composition includes a negative type liquid crystal material, a polymerizable monomer, a sensitizer, and stabilizer. The sensitizer is an organometallic complex that has an amount of 0.01%-5% of total mass of the liquid crystal composition and has a strong absorption of ultraviolet light having a wavelength of 300-450 nm. The sensitizer converts the primary wavelength range of ultraviolet light for reaction of the polymerizable monomer from 200-300 nm to 300-450 nm, staying away from the absorption band of the liquid crystal material and reducing damages caused on the liquid crystal material and the alignment material of polyimide, thereby heightening reaction efficiency and homogeneity of the polymerizable monomer and the quality and lifespan of the liquid crystal display panel.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: August 12, 2014
    Assignee: Shenzen China Star Optoelectronic Technology co., Ltd.
    Inventors: Xinhui Zhong, Kuancheng Lee
  • Patent number: 8790545
    Abstract: A composition for a liquid crystal film includes: 100 parts by weight of a vertically aligned liquid crystal mixture; 0.001-20 parts by weight of a chiral dopant; and 50-900 parts by weight of a solvent.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: July 29, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dae-Hee Lee, Belyaev Sergey, Moon-Soo Park
  • Publication number: 20140192305
    Abstract: The present invention relates to photoreactive compounds that are particularly useful in materials for the alignment of liquid crystals.
    Type: Application
    Filed: August 7, 2012
    Publication date: July 10, 2014
    Applicant: ROLIC AG
    Inventors: Frederic Lincker, Izabela Bury S. Pires, Sabrina Chappellet, Patricia Scandiucci De Freitas, Mohammed Ibn-Elhaj, Qian Tang, Satish Palika, Masato Hoshino, Jean-Francois Eckert
  • Patent number: 8771809
    Abstract: A photoalignment material includes a photoalignment polymer having a photosensitive portion represented by the following Chemical Formula 1, R1 represents a cyclic compound, each of R2 and R3 represents a single bond, —(CnH2n)—, —(CxH2x)O(CyH2y)—, or —(CaH2a)O(CbH2b)O(CdH2d)—, “n” represents an integer in the range of 1 to 6, each of “x”, “y”, “a”, “b”, and “d” represents 0 or an integer in the range of 1 to 6, x+y is an integer in the range of 1 to 5, and a+b+d is an integer in the range of 1 to 6. Each hydrogen atom is replaceable with —CH3, —CH2—CH3, —OCH3, —OCH2CH3, —OCH2OCH3, F, or Cl, and each hydrogen atom of —CH3, —CH2—CH3, —OCH3, —OCH2CH3, or —OCH2OCH3 is replaceable with F or Cl.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: July 8, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Fusayuki Takeshita, Jun-Woo Lee
  • Patent number: 8758871
    Abstract: A liquid crystal display is provided which is capable of reducing the occurrence of defective display due to variations in the initial alignment direction of a liquid crystal alignment control film in a liquid crystal display of an IPS scheme, realizing the stable liquid crystal alignment, providing excellent mass productivity, and having high image quality with a higher contrast ratio. The liquid crystal display has a liquid crystal layer disposed between a pair of substrates, at least one of the substrates being transparent, and an alignment control film formed between the liquid crystal layer and the substrate. At least one of the alignment control films 109 comprises photoreactive polyimide and/or polyamic acid provided with an alignment control ability by irradiation of substantially linearly polarized light.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: June 24, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yasushi Tomioka, Hidetoshi Abe, Katsumi Kondo
  • Patent number: 8753537
    Abstract: The present invention provides a mixture for liquid crystal medium and a liquid crystal display using the same. The mixture for liquid crystal medium comprises: at least one anisotropic liquid crystal material and a polymerizable monomer which will polymerize under UV irradiation. The weight percentage of the polymerizable monomer accounts for 0.1% to 1% of the total mixture for liquid crystal medium. In the mixture for liquid crystal medium and a liquid crystal display using the same according to the present invention, by using a polymerizable monomer which will polymerize under UV irradiation and the appropriate content ratio, the polymer bump with small size and good uniformity can be obtained within the mixture for liquid crystal medium after the polymerization, which avoids the bad liquid crystal alignment and the light spot occurred at the dark state of the liquid crystal panel, and then increases the response rapid of the liquid crystal panel to obtain high contrast ratio and stable mass production.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: June 17, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Xing Feng, Xinhui Zhong