With Viewing Layer Of Specified Composition Patents (Class 428/1.3)
-
Patent number: 7767109Abstract: A liquid crystal (LC) medium for polymerization alignment process includes at least a set of LC molecules, at least a set of reactive monomers, and at least one inhibitor at a concentration in a range of 0.01-1% wt of the reactive monomer. The inhibitor quenches polymerization of radicals of the reactive monomers, which is triggered by light or heat before the polymerization alignment process. Therefore influence on the reactive monomers before the polymerization alignment process is reduced and stability of the LC medium is improved.Type: GrantFiled: March 25, 2008Date of Patent: August 3, 2010Assignee: AU Optronics Corp.Inventors: Chia-Hsuan Pai, Chung-Ching Hsieh, Te-Sheng Chen, Sugiura Norio
-
Publication number: 20100188590Abstract: Provided is a phase plate having high phase compensation effect with low manufacturing cost, which is a device including a substrate and a thin film including laminated thin films of two or more types having different refractive indexes. The device performs phase compensation for an oblique incident polarized light ray, by using interference due to a high refractive index thin film and a low refractive index thin film.Type: ApplicationFiled: January 29, 2010Publication date: July 29, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Yutaka Yamaguchi
-
Patent number: 7763181Abstract: A liquid crystal display showing a high contrast and reduced in color shift depending on the viewing angle is provided. The liquid crystal display device comprises a liquid crystal cell having a retardation value Re1(400) at 400 nm and a retardation value Re1(550) at 500 nm in the black state; and at least one layer of optically anisotropic layer formed of a composition comprising at least one species of liquid crystalline compound, having a retardations value Re2(400) at 400 nm and a retardation value Re2(550) at 550 nm, wherein Re2(400) and Re2(550) of said optically anisotropic layer, and retardations values Re1(400) and Re1(550) satisfy the relational expression (1) below: 0.9??2/?1?1.1??Relational Expression (1) where, ?1=Re1(400)/Re1(550) and ?2=Re2(400)/Re2(550).Type: GrantFiled: September 7, 2006Date of Patent: July 27, 2010Assignee: Fujifilm CorporationInventors: Akira Ikeda, Michio Nagai, Hideyuki Nishikawa
-
Patent number: 7758773Abstract: This disclosure outlines a new method of modifying the properties of existing liquid crystals by doping them with ferroelectric micro- and nanoparticles. We show that this approach, in contrast to the traditional time consuming and expensive chemical synthetic methods, enriches and enhances the electro-optical performance of many liquid crystal materials. We demonstrate that by changing the concentration and type of ferroelectric particles the physical properties of the nematic, smectic, and cholesteric liquid crystal materials can be changed, including the dielectric constants, the birefringence, the phase transition temperatures, and even the order parameter. We also demonstrate the performance of these new materials in various devices, including displays, light modulators, and beam steering devices.Type: GrantFiled: March 14, 2007Date of Patent: July 20, 2010Assignee: Kent State UniversityInventors: John L. West, Chae Il Cheon, Anatoliy V. Glushchenko, Yuriy Reznikov, Fenghua Li
-
Patent number: 7758930Abstract: There are provided: a curable resin composition having a high exposure sensitivity and a good developing property, and thereby capable of forming an accurate and precise pattern; a liquid crystal panel substrate on which a protective film for covering a color layer or spacers for a liquid crystal layer, by using the curable resin composition, hardly causing a color irregularity and contrast irregularity; and a liquid crystal panel using the liquid crystal panel substrate and having a superior display quality. The curable resin composition of the present invention comprises: a copolymer (a) having a molecular structure in which a constitutional unit including an acidic functional unit and a constitutional unit including a photocurable functional group are linked at least; a photopolymerization initiator (h) having a tertiary amine structure; and a photocurable compound (c) having at least one acidic functional group and at least three photocurable functional groups.Type: GrantFiled: April 20, 2009Date of Patent: July 20, 2010Assignee: Dai Nippon Printing Co., Ltd.Inventors: Shinji Hayashi, Shunsuke Sega, Hiromu Taguchi, Mitsutaka Hasegawa
-
Patent number: 7755728Abstract: An optically anisotropic film comprising a liquid crystal compound forming a nematic phase or smectic A phase, the liquid crystalline phase satisfying the following inequality: ?n(450 nm)/?n(550 nm)<1.0 in which each ?n (?) represents an intrinsic birefringence at a wavelength of ?, wherein the optically anisotropic film (A) has an absolute in-plane retardation (Re) of 40 nm or less and a retardation in the thickness direction (Rth) of ?10 nm or less.Type: GrantFiled: March 29, 2006Date of Patent: July 13, 2010Assignee: Fujifilm CorporationInventors: Mitsuyoshi Ichihashi, Hideyuki Nishikawa
-
Patent number: 7749577Abstract: Provided are multilayer laminates having one or more layers comprising twisted nematic liquid crystals and one or more layers of a polymeric sheet comprising a polymer with a modulus between 20,000 psi (138 MPa) and 100,000 psi (690 MPa). The twisted nematic liquid crystal layers reflect infrared radiation. Thus, the multilayer laminates are useful to reduce the transmission of infrared energy. For example, in some embodiments the multilayer laminates are useful as windows to reduce energy consumption necessary to cool the interior of a structure such as an automobile or building. Preferably, the multilayer laminates retain the beneficial properties of safety glass. The multilayer laminates may include additional layers such as infrared absorbing layers, half wave plates, and the like, to minimize the transmission of infrared energy. The multilayer laminates may also include further additional layers such as polymeric films, polymeric sheets, rigid sheets, and the like.Type: GrantFiled: May 26, 2006Date of Patent: July 6, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Marc B. Goldfinger, Richard A. Hayes, Lee A. Silverman
-
Patent number: 7749411Abstract: A method of producing an optical film comprising the step of: stretching a continuous resinous film by apply tension to a transverse direction of the resinous film while conveying the resinous film, wherein the stretching is carried out with a stretching apparatus comprising right and left edge holding devices which hold right and left edges of the resinous film; and, the right and left edge holding devices of the stretching apparatus each independently controls right and left edge holding distances of the resinous film so that a slow axis of the resinous film is substantially perpendicular or substantially parallel to a film conveying direction, provided that the edge holding distance is defined as a distance between an initiation position and a cessation position of holding of the edge of the resinous film.Type: GrantFiled: November 23, 2005Date of Patent: July 6, 2010Assignee: Konica Minolta Opto, Inc.Inventor: Katsusuke Nagashima
-
Publication number: 20100165223Abstract: A liquid crystal includes about 50 wt % to about 65 wt % of a negative compound material, and about 40 wt % to about 50 wt % of a neutral compound material. A liquid crystal display apparatus comprises a first substrate having a pixel area, a second substrate facing the first substrate, and a plurality of liquid crystals disposed between the first substrate and the second substrate, wherein each liquid crystal comprises about 50 wt % to about 65 wt % of a negative compound material having a dielectric anisotropy of a negative polarity, and about 40 wt % to about 50 wt % of a neutral compound material.Type: ApplicationFiled: December 30, 2008Publication date: July 1, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seon-Ah Cho, Jang-Hyun Kim, Seong-Nam Lee, Jeong-Uk Heo
-
Patent number: 7744970Abstract: Provided are multilayer laminates having one or more layers comprising twisted nematic liquid crystals and one or more layers of a polymeric sheet comprising a polymer with a modulus of 20,000 psi (138 MPa) or less. The twisted nematic liquid crystal layers reflect infrared radiation. Thus, the multilayer laminates are useful to reduce the transmission of infrared energy. For example, in some embodiments the multilayer laminates are useful as windows to reduce energy consumption necessary to cool the interior of a structure such as an automobile or building. Preferably, the multilayer laminates retain the beneficial properties of safety glass. The multilayer laminates may include additional layers such as infrared absorbing layers, half wave plates, and the like, to minimize the transmission of infrared energy. The multilayer laminates may also include further additional layers such as polymeric films, polymeric sheets, rigid sheets, and the like.Type: GrantFiled: May 26, 2006Date of Patent: June 29, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Lee A. Silverman, Marc B. Goldfinger, Richard A. Hayes
-
Publication number: 20100149470Abstract: Provided is a film that is made of a propylene-based copolymer selected from among propylene-based random copolymers and propylene-based block copolymers, the film being useful as a precursor film for the production of a retardation film by stretching. The propylene-based copolymer forming the film contains crystals containing smectic crystals, wherein the percentage of smectic crystals to all the crystals of the propylene-based copolymer. The film has an in-plane retardation of 50 nm or less and a thickness falling within the range of 30 to 200 ?m. The propylene-based copolymer is a copolymer that has a parameter (A) falling within the range of from 0.0007 to 0.1, the parameter (A) being calculated from Formula (1) defined for a stress-strain curve produced as a result of stretching a film made of the polymer at a tensile rate of 100 mm/minute at a temperature at which a stress of 0.8±0.Type: ApplicationFiled: September 25, 2007Publication date: June 17, 2010Inventors: Kyoko Hino, Toshihiko Suzuki, Hiroaki Takahata, Takashi Sakurai
-
Patent number: 7736708Abstract: The present invention relates to a micropattern retardation element requiring no stretch processing and no extremely high positioning accuracy in cutting films, and the like, and having the retardation region controlled in width of a micron unit, and a producing method therefore. Said micropattern retardation element can be obtained by forming a liquid crystalline or non liquid crystalline polymer thin film layer having photoactive groups, on a substrate, and then, after orientation treatment in a micropattern form, forming a birefringence layer so as to contact with said polymer thin film layer, so that birefringence molecules of said birefringence layer are oriented according to orientation of photoactive groups in said thin film. Said retardation element is used in a three-dimensional display, and the like.Type: GrantFiled: March 29, 2005Date of Patent: June 15, 2010Assignees: National Institute Of Advanced Industrial Science and Technology, Nippon Kayaku Kabushiki KaishaInventors: Daisaku Matsunaga, Masanori Hashimoto, Christian Ruslim, Takashi Tamaki, Kunihiro Ichimura
-
Patent number: 7732024Abstract: A homeotropic alignment liquid crystal film is provided with a liquid crystalline substance containing a side chain liquid crystalline compound having an oxetanyl group, as a constituent, aligned homeotropically on an alignment substrate while being in a liquid crystal state and fixed in the homeotropic alignment by allowing the oxetanyl group to react. Thus, the homeotropic alignment liquid crystal film can be stably produced without necessitating a complicated step such as light irradiation under an inert gas atmosphere and is excellent in alignment retainability after being fixed in the homeotropic alignment and in mechanical strength.Type: GrantFiled: July 23, 2007Date of Patent: June 8, 2010Assignee: Nippon Oil CorporationInventors: Hitoshi Mazaki, Takashi Seki, Takuya Matsumoto, Tetsuya Uesaka, Akio Mutou
-
Publication number: 20100136263Abstract: A liquid crystal display device comprises a color filter substrate and an array substrate. An optical compensation film is disposed on the color filter substrate and/or the array substrate, wherein the optical compensation film comprises a polyimide, comprising the following formula: wherein n is an integer greater than 1, and wherein when A is cyclo-aliphatic compound, B is aromatic compound or cyclo-aliphatic compound, and when A is aromatic compound, B is cyclo-aliphatic compound.Type: ApplicationFiled: January 29, 2010Publication date: June 3, 2010Inventors: Chyi-Ming Leu, Horng-Long Tyan, Tzong-Ming Lee
-
Patent number: 7727600Abstract: A liquid crystal display device comprises a color filter substrate and an array substrate. An optical compensation film is disposed on the color filter substrate and/or the array substrate, wherein the optical compensation film comprises a polyimide, comprising the following formula: wherein n is an integer greater than 1, and wherein when A is cyclo-aliphatic compound, B is aromatic compound or cyclo-aliphatic compound, and when A is aromatic compound, B is cyclo-aliphatic compound.Type: GrantFiled: October 10, 2008Date of Patent: June 1, 2010Assignee: Industrial Technology Research InstituteInventors: Chyi-Ming Leu, Horng-Long Tyan, Tzong-Ming Lee
-
Patent number: 7722932Abstract: Provided herein are one-solution type thermosetting resin compositions that may be useful to form protective films for color filters used in liquid crystal displays or image sensors. According to some embodiments, the resin compositions may include a self-curable copolymer and an epoxy compound. The protective films may exhibit desirable flatness, adhesiveness, transmittance, heat resistance and chemical resistance. Also provided are methods of forming a film on a substrate, and substrates having a film formed thereon. In addition, provided herein are color filters including a film formed from a composition according to an embodiment of the invention, and liquid crystal displays and image sensors including such color filters.Type: GrantFiled: January 17, 2007Date of Patent: May 25, 2010Assignee: Cheil Industries, Inc.Inventors: O Bum Kwon, Hyun Moon Choi, Sun Yul Lee, Kil Sung Lee
-
Patent number: 7713597Abstract: A durable optical film or element includes a polymerized structure having a microstructured surface and a plurality of surface modified colloidal nanoparticles of silica, zirconia, or mixtures thereof. Display devices including the durable microstructured film are also described.Type: GrantFiled: March 12, 2009Date of Patent: May 11, 2010Assignee: 3M Innovative Properties CompanyInventors: Clinton L. Jones, Brant U. Kolb, Emily S. Goenner, John T. Brady, Christopher A. Haak
-
Patent number: 7713595Abstract: A method of forming an optical compensation film includes coating one or more first layers and one or more second layers onto a carrier substrate, and stretching the first layers and second layers simultaneously. The one or more first layers include a polymer having an out-of-plane birefringence (?nth) not more negative than ?0.005 and not more positive than +0.005, and the one or more second layers include a polymer having an out-of-plane birefringence more negative than ?0.005 or more positive than +0.005. The overall in-plane retardation (Rin) of the optical compensation film is greater than 20 nm and the out-of-plane retardation (Rth) of the optical compensation film is more negative than ?20 nm or more positive than +20 nm.Type: GrantFiled: October 18, 2005Date of Patent: May 11, 2010Assignee: Nitto Denko CorporationInventors: Jehuda Greener, James F. Elman, Jon A. Hammerschmidt, Elizabeth K. Priebe
-
Patent number: 7704569Abstract: A twist-obliquely oriented liquid crystal layer and a twist-obliquely oriented film is formed by forming an alignment layer, on a substrate, containing at least one selected from a glassy macromolecule and a silane coupling agent, performing a rubbing treatment on the alignment layer, and then applying a liquid crystal coating solution containing a chiral agent and a photopolymerizable liquid crystal composition.Type: GrantFiled: March 5, 2004Date of Patent: April 27, 2010Assignee: Nitto Denko CorporationInventor: Ikuo Kawamoto
-
Patent number: 7704570Abstract: A polarizing plate includes two transparent supports A and B; and a polarizer sandwiched between the two transparent supports A and B; wherein (i) the transparent support A is a stretched cellulose ester film (a) which contains a non-phosphoric acid ester plasticizer and substantially does not contain a phosphoric acid ester plasticizer, and wherein (ii) the transparent support B is a stretched cellulose ester film (b) which has a retardation value R0 of from 0 nm to 10 nm and a retardation value Rt of from ?30 nm to 20 nm, and the retardation value R0 and the retardation value Rt are defined by the following formulas (I) and (II): Ro=(nx?ny)×d??Formula (I): Rt={(nx+ny)/2?nz}×d.Type: GrantFiled: August 25, 2006Date of Patent: April 27, 2010Assignee: Konica Minolta Opto, Inc.Inventors: Takashi Takebe, Kunio Shimizu, Shigeki Oka
-
Patent number: 7704568Abstract: The present invention relates to photo-tunable dopant compositions comprising a photo-reactive chiral compound capable of undergoing a photochemical reaction resulting in the loss of chirality, and a triplet sensitizer. The present invention also relates to a display comprising a substrate, a liquid crystalline layer thereon, wherein the liquid crystalline layer comprises a nematic host, at least one chiral dopant, a photo-reacted compound, and a triplet sensitizer, and at least one transparent conductive layer. The present invention also relates to a method of tuning a cholesteric liquid crystal material comprising providing at least one mesogenic compound, at least one triplet sensitizer, and at least one photo-reactive chiral compound; combining the at least one mesogenic compound, at least one triplet sensitizer, and at least one photo-reactive chiral compound to form a mixture; and irradiating the mixture for a period of time.Type: GrantFiled: December 10, 2008Date of Patent: April 27, 2010Assignee: Industrial Technology Research InstituteInventors: Deepak Shukla, Krishnan Chari
-
Patent number: 7700168Abstract: A liquid crystal display element includes two substrates each covered with a transparent conducting layer and having a liquid crystal layer therebetween, in which the liquid crystal layer is a pure nematic electrooptical matrix or sensitized electrooptical mixture with nanoobjects and in which the conducting layers have been treated with a surface electromagnetic wave. The present invention increases a response speed of the liquid crystal display element due to a decrease of the switching time of electrooptical liquid crystal layer up to 1 ms or less; decreases the number of layers in the liquid crystal display element because an alignment layer is absent, and thus increases the transparency of element; decreases a supply voltage amplitude; and increases a possibility to develop different configurations of the liquid crystal display element.Type: GrantFiled: September 19, 2007Date of Patent: April 20, 2010Assignees: Samsung Electronics Co., Ltd.Inventors: Natalia Vladimirovna Kamanina, Petr Yakovlevich Vasilyev
-
Patent number: 7697098Abstract: It is an object of the present invention to suppress light leakage in a dark state which is generated by rubbing treatment. A liquid crystal material containing an ultraviolet curable liquid crystalline monomer at a concentration of more than 0 wt % and not more than 1.0 wt % is used for a liquid crystal layer, and the liquid crystal layer is irradiated with ultraviolet rays. By applying such a liquid crystal layer to a liquid crystal display device, light leakage in a dark state can be suppressed, and the black display can be improved. Therefore, a liquid crystal display device with an excellent contrast and high display quality can be obtained.Type: GrantFiled: September 14, 2006Date of Patent: April 13, 2010Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Daisuke Kubota, Takeshi Nishi, Tetsuji Ishitani
-
Patent number: 7695782Abstract: An optical laminate comprising an anti-reflection film 1, polarizing film 2, adhesive layer 3, glass cell for liquid crystal display 4, adhesive layer 5 and polarizing film 6 laminated sequentially, wherein the ratio (B/A) of the maximum value B of the loss tangent of the adhesive layer 5 to the maximum value A of the loss tangent of the adhesive layer 3 is 1.1 or more. The maximum value of the loss tangent means the maximum value of loss modulus (E?) storage modulus (E?) (=tan ?), each measured by heating the adhesive layer in a temperature range of ?70° C. to 200° C. at a temperature rising rate of 4° C./min and a frequency of 1 Hz.Type: GrantFiled: September 14, 2005Date of Patent: April 13, 2010Assignee: Sumitomo Chemical Company, LimitedInventors: Ryu Takeko, Akira Kawamura, Atsushi Higo
-
Patent number: 7691458Abstract: Numerous embodiments of a carrier substrate having thermochromatic materials are described. In one embodiment of the present invention, a carrier substrate has a visible surface, and a thermochromatic material is disposed near the carrier substrate. The thermochromatic material produces a visual change of the visible surface when an activation temperature of the thermochromatic material is reached.Type: GrantFiled: March 31, 2004Date of Patent: April 6, 2010Assignee: Intel CorporationInventors: Gary A. Brist, Patrick D. Boyd
-
Patent number: 7674506Abstract: There is provided a direct backlight type liquid crystal display device having high light diffusability, keeping excellent color and having high brightness.Type: GrantFiled: June 16, 2004Date of Patent: March 9, 2010Assignee: Teijin Chemicals, Ltd.Inventors: Isao Sogo, Masato Ando, Mitsuhiro Takeo, Koji Maeda, Masanao Jinno
-
Patent number: 7670502Abstract: The invention is directed to liquid crystal compositions for use in bistable liquid crystal devices and to bistable liquid crystal devices containing said liquid crystal compositions. The liquid crystal composition comprises a component (?) said component (?) containing one or more compounds having a phenyl ring of formula A Whereby XA is F, CI, SF5, NCS or a C1 to C8 alkanyl, alkenyl or alkoxy radical substituted with at least one F atom; and LA is H or F.Type: GrantFiled: January 31, 2005Date of Patent: March 2, 2010Assignee: Merck Patent GmbHInventors: Matthew Francis, Marc John Goulding, John Clifford Jones, Stephen Beldon, Peer Kirsch
-
Publication number: 20100047483Abstract: The present invention provides a birefringent film having an index ellipsoid satisfying a relationship of nz>nx>ny, and having thinness and light weight, which can be relatively easily produced. The birefringent film of the present invention contains an acenaphtho[1,2-b]quinoxaline derivative represented by the following general formula (I), and an index ellipsoid of the film satisfies a relationship of nz>nx>ny. Here, in the formula (I), X, Y, and Z each independently represent a halogen atom, an alkoxy group, an —R group, an —OM group, a —COOM group, an —OCOR group, an —NHCOR group, a —CONHR group, an —NH2 group, an —NO2 group, a —CF3 group, a —CN group, an —OCN group, an —SCN group, an —SM group, and a —PO3M group; M represents a counterion; R represents hydrocarbon; k, l, m, and n represent the number of substitutions, k is an integer of 1 to 4, and l, m and n are each independently an integer of 0 to 3.Type: ApplicationFiled: March 3, 2008Publication date: February 25, 2010Applicant: NITTO DENKO CORPORATIONInventor: Shoichi Matsuda
-
Patent number: 7666482Abstract: A retardation film manufactured as a long roll film having a slow axis in a lateral direction of the long roll film, wherein an elastic modulus in an in-plane slow axis direction ?s and an elastic modulus in an in-plane fast axis direction ?f meet Condition (1), the in-plane fast axis direction being perpendicular to the in-plane slow axis direction: 1.26??s/?f?2.60??Condition (1).Type: GrantFiled: October 4, 2006Date of Patent: February 23, 2010Assignee: Konica Minolta Opto, Inc.Inventors: Hiroki Umeda, Noriyasu Kuzuhara
-
Patent number: 7662444Abstract: A liquid crystal microcapsule, comprising a liquid crystal and a polyurea film encapsulating the liquid crystal, wherein at least one of an alkyl group and a fluoroalkyl group is bonded directly or indirectly via a urethane bond to the polyurea. A method of producing a liquid crystal microcapsule, comprising: forming a polyurea and the film thereof by allowing an aligner, which is a compound having a hydroxyl group and at least one of an alkyl group and a fluoroalkyl group, to react with a polyisocyanate, a polyamine, and water; and encapsulating a liquid crystal with the film. A liquid crystal display device using the liquid crystal microcapsule.Type: GrantFiled: July 13, 2005Date of Patent: February 16, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Naoki Hiji, Shigeru Yamamoto
-
Publication number: 20100032672Abstract: A bonding pad includes a metal layer, a gate insulting layer, a passivation layer, and a transparent conductive layer. The metal layer has a first metal pattern and a second metal pattern which are separated from each other. The gate insulating layer covers the metal layer, and the passivation layer covers the gate insulating layer. The gate insulating layer and the passivation layer have a first contact opening and a second contact opening respectively exposing a portion of the first metal pattern and a portion of the second metal pattern. The transparent conductive layer covers the passivation layer and fills the first and second contact openings. The transparent conductive layer on the second contact opening serves as a testing-probe contact area. The present invention also provides an active device array substrate having the bonding pad.Type: ApplicationFiled: November 30, 2008Publication date: February 11, 2010Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventor: Shih-Chieh Lo
-
Publication number: 20100033657Abstract: A liquid crystal display is presented. The liquid crystal display includes: a first substrate; a pixel electrode formed on the first substrate; a first alignment layer formed on the pixel electrode; a second substrate facing the first substrate; a common electrode formed on the second substrate; a second alignment layer formed on the common electrode; a liquid crystal layer formed between the first alignment layer and the second alignment layer; and a light absorption layer formed between the first substrate and the first alignment layer, or the second substrate and the second alignment layer, wherein the light absorption layer absorbs light having a UV wavelength between about 280 nm and about 450 nm.Type: ApplicationFiled: May 21, 2009Publication date: February 11, 2010Inventors: Nak-Cho Choi, Min Kang, Hoon Kang
-
Patent number: 7648645Abstract: A pre-polymer/liquid crystal composition is disclosed and includes, a liquid crystal component, a photo polymerization initiator, and a polymer precursor component. The polymer precursor component includes at least, a silane monomer, reactive (meth)acryloxy monomer or oligomer, and an ester, urethane, or (meth)acrylate based polymer or oligomer, bearing one or more reactive (meth)acrylate groups. Methods of forming a bistable electro-optical device are also disclosed.Type: GrantFiled: November 8, 2006Date of Patent: January 19, 2010Assignee: 3M Innovative Properties CompanyInventors: Ralph R. Roberts, Amy J. Hite, Jane K. Wardhana, Kevin M. Lewandowski
-
Patent number: 7641946Abstract: An adhesive film prevents static charge on peeling generated when removed from an adherend and also improves adhesion between a base material and an adhesive layer, where an under coat layer containing an organometallic is formed on the base material and then an adhesive layer is formed on the base material. Alternatively, an adhesive film showing high adhesion with a glass substrate, and including an antistatic layer, which prevents static charge on peeling generated when the surface protective film is removed, and improves adhesion between a base material and an adhesive layer, where the adhesive film includes a base material, an adhesive layer made of a water dispersible adhesive including, and an antistatic layer, containing a water soluble or water dispersible conductive material, interposed between them, and the adhesive film is stuck onto an image display device.Type: GrantFiled: July 20, 2006Date of Patent: January 5, 2010Assignee: Nitto Denko CorporationInventors: Mika Kanamaru, Kenichi Okada, Toshitaka Takahashi
-
Publication number: 20090324855Abstract: A liquid crystal display (LCD) panel comprising a bottom substrate, a top substrate and a liquid crystal (LC) layer interposed therebetween is provided. The LC layer comprises numerous LC compounds and a stabilization-aligned polymer polymerized by numerous polymerizable monomers and formed on at least one surface of the top substrate or the bottom substrate. These LC compounds comprise a first LC compound, a second LC compound and a third LC compound, wherein the third LC compound is selected from the group consisting of a compound 3A, a compound 3B, a compound 3C and a combination thereof.Type: ApplicationFiled: May 5, 2009Publication date: December 31, 2009Applicant: AU OPTRONICS CORP.Inventors: Chung-Ching HSIEH, Yang-Chu LIN, Chia-Hsuan PAI, Te-Sheng CHEN, Norio SUGIURA
-
Publication number: 20090303697Abstract: An optical sheet, a backlight unit including the optical sheet, and a liquid crystal display including the backlight unit are disclosed. The optical sheet includes a base film, a base portion on the base film, and a plurality of projections on the base portion. The base portion includes a first area. The projections include a plurality of peaks and a plurality of valleys. The first area is a section including a first side adjoining to one of the valleys and a second side corresponding to a height of the base portion. A length of the first side is substantially 2 ?m to 10 ?m. The first area has one first bead or 2 to 5 first beads.Type: ApplicationFiled: December 17, 2008Publication date: December 10, 2009Inventors: Yongsu KIM, Cheol Yoon
-
Patent number: 7630031Abstract: An optical compensation film is provided and includes a cellulose acylate film and an optically anisotropic layer containing a liquid crystalline compound. The cellulose acylate film satisfies specific conditions in relation to substitution degrees of hydroxyl groups in glucose units constituting cellulose of the cellulose acylate film, and has a thickness of 40 to 85 ?m.Type: GrantFiled: August 16, 2006Date of Patent: December 8, 2009Assignee: FUJIFILM CorporationInventor: Yoji Ito
-
Patent number: 7625612Abstract: There is provided a retardation film including a stretched film of a polymer film having an absolute value of photoelastic coefficient (m2/N) of 50×10?12 or less measured by using light of a wavelength of 550 nm at 23° C., which satisfies the following expressions (1) and (2): Re[450]<Re[550]<Re[650]??(1) Rth[550]<Re[550]??(2). In the expressions (1) and (2): Re[450], Re[550], and Re[650] respectively represent in-plane retardation values measured by using light of wavelengths of 450 nm, 550 nm, and 650 nm at 23° C.; and Rth[550] represents a thickness direction retardation value measured by using light of a wavelength of 550 nm at 23° C.Type: GrantFiled: February 1, 2006Date of Patent: December 1, 2009Assignee: Nitto Denko CorporationInventors: Yutaka Ohmori, Michie Sakamoto, Hisae Sugihara, Akinori Izaki
-
Patent number: 7622166Abstract: An optical element and a process for producing the optical element are provided. The optical element includes a light transparent substrate and a first birefringence layer provided on the substrate. The first birefringence layer includes a polymerizable liquid crystal having rodlike molecules and a coupling agent and/or a surfactant that homeotropically align the polymerizable liquid crystal to form a crosslinked polymer in a state of homeotropic alignment. The crosslinked polymer has a three-dimensionally crosslinked structure wherein the polymerizable liquid crystal having rodlike molecules holds homeotropic alignment.Type: GrantFiled: November 24, 2004Date of Patent: November 24, 2009Assignee: Dai Nippon Printing Co., Ltd.Inventors: Koji Ishizaki, Kanami Ikegami
-
Patent number: 7622164Abstract: Microstructured optical films, assemblies of films including at least one microstructured optical film, and (e.g. illuminated) display devices including a single microstructured optical film or assembly.Type: GrantFiled: June 8, 2006Date of Patent: November 24, 2009Assignee: 3M Innovative Properties CompanyInventors: Clinton L. Jones, Brant U. Kolb, David B. Olson, Emily S. Goenner, Shandon D. Hart, John T. Cowher
-
Patent number: 7622165Abstract: Disclosed are a liquid-crystalline medium, which contains one or more compounds of formula I their use for electro-optical purposes, to displays containing this medium, and to novel LC compounds for use in LC media and displays.Type: GrantFiled: October 3, 2007Date of Patent: November 24, 2009Assignee: Merck Patent GmbHInventors: Michael Wittek, Lars Lietzau
-
Patent number: 7622055Abstract: A polarizing plate is provided that has excellent polarization properties and high surface hardness and can have a reduced thickness. The polarizing plate includes a polarizer and a cured resin layer. The cured resin layer is formed directly on at least one surface of the polarizer. The cured resin layer is formed of a solventless photocurable composition containing the following components (A), (B), and (C): (A) at least one of a polyfunctional acrylic monomer and a polyfunctional methacrylic monomer; (B) a photocurable prepolymer; and (C) a photopolymerization initiator.Type: GrantFiled: May 14, 2007Date of Patent: November 24, 2009Assignee: Nitto Denko CorporationInventors: Shinya Nakano, Kazutaka Hara, Takehito Fuchida, Naoto Ooe
-
Patent number: 7615325Abstract: This invention relates to compositions and an assembly process for the manufacture of liquid crystal displays. The assembly process is especially advantageous because it can be easily scalable to roll-to-roll continuous manufacturing of liquid crystal displays. The invention is directed to a photoalignable top-sealing composition for top-sealing a liquid crystal display cell.Type: GrantFiled: December 6, 2006Date of Patent: November 10, 2009Assignee: Sipix Imaging, Inc.Inventors: Rong-Chang Liang, HongMei Zang, Haiyan Gu
-
Patent number: 7615261Abstract: An LCD with an improved image quality and a method of fabricating the same are provided. After a rubbing process as a primary alignment process is performed on an alignment layer, a pre-treatment is performed on the alignment layer before a light irradiation as a secondary alignment process. Thus, the light leakage at a stepped portion may be prevented and the contrast ratio can be improved. Consequently, a high quality image may be obtained and the reliability of products can also be enhanced. After a thermal treatment as the pre-treatment or during the thermal treatment, a light irradiation as a secondary alignment process is performed, or the light irradiation as the secondary alignment process is performed under an oxygen atmosphere, thereby enhancing the alignment process efficiency during the light irradiation. Further, a non-polarized light may be irradiated on the rubbed alignment layer during the light irradiation.Type: GrantFiled: December 28, 2005Date of Patent: November 10, 2009Assignee: LG Display Co., Ltd.Inventors: YongSung Ham, MiKyung Chu
-
Patent number: 7604850Abstract: An electro-optical device including a biaxial liquid crystal having a primary and secondary director is provided. A change in orientation of at least one of the directors due to an applied electric field produces a change in the optical state of the device. Response times are increased dramatically over uniaxial nematic based liquid crystal devices, offering improved performance and efficiency.Type: GrantFiled: August 23, 2006Date of Patent: October 20, 2009Assignee: Kent State UniversityInventor: Satyendra Kumar
-
Patent number: 7604381Abstract: Disclosed herein is an optical article having a top layer with a structured surface that collimates light, a core layer secured to the top layer opposite the structured surface, and a bottom layer secured to the core layer opposite the top layer. Either the top layer or the core layer includes a first extrudable polymer having a flexural modulus of greater than 2.5 GPa, and the other layer includes a second extrudable polymer having a flexural modulus of 2.5 GPa or less, an impact strength of greater than about 40 J/m, and tensile elongation at break of greater than about 5%. The bottom layer includes a third extrudable polymer. The bottom layer of the optical article may be structured to diffuse light. One or two optical articles may be secured to an optical film such as a polarizer film. Methods and display devices are also disclosed herein.Type: GrantFiled: April 16, 2007Date of Patent: October 20, 2009Assignee: 3M Innovative Properties CompanyInventors: Timothy J. Hebrink, James M. Jonza, Randy S. Bay, Graham M. Clarke, Raymond L. Lucking, Ta-Hua Yu, Terry O. Collier
-
Patent number: 7599028Abstract: A polarizing plate used in a vertical alignment mode liquid crystal display comprising a liquid crystal cell is disclosed, wherein the polarizing plate comprises a polarizing film and a mixed fatty acid cellulose ester film with optical biaxiality provided between the polarizing film and the liquid crystal cell, and wherein the mixed fatty acid cellulose ester film has a retardation in plane R0 of from 31 to 120 nm, and a retardation in the thickness direction Rt of from 60 to 300 nm, in which R0 is represented by the following formula (1) and Rt is represented by the following formula (2): R0=(nx?ny)×d??formula (1) Rt={(nx+ny)/2?nz}×d.Type: GrantFiled: December 15, 2006Date of Patent: October 6, 2009Assignee: Konica CorporationInventors: Noriyasu Kuzuhara, Koji Tasaka, Hiroki Umeda, Takatoshi Yajima
-
Patent number: 7597820Abstract: A liquid crystal-containing composition according to the present invention includes a cholesteric liquid crystal, a polymer, and particles having hydrophobic surfaces. The particles having hydrophobic surfaces are at the interface between the region containing the cholesteric liquid crystal and the region containing the polymer.Type: GrantFiled: September 21, 2007Date of Patent: October 6, 2009Assignee: Fuji Xerox Co., Ltd.Inventors: Chikara Manabe, Naoki Hiji, Shigeru Yamamoto
-
Publication number: 20090244458Abstract: [Problem] In the present invention, it is an object to improve display quality by improving response speed of a liquid crystal element in a liquid crystal display device, in particular, response speed in the case of falling. [Means for Solving the Problems] In the present invention, it is characterized that a liquid crystal layer is divided into plural regions (domains) substantially by mixing a chemical compound including a liquid crystal skeleton in a liquid crystal layer existing liquid crystal molecules as a technique to improve response speed of a liquid crystal element in a liquid crystal display device for solving the above problem.Type: ApplicationFiled: June 11, 2009Publication date: October 1, 2009Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Takeshi Nishi, Tetsuji Ishitani, Daisuke Kubota
-
Publication number: 20090246415Abstract: A functional film comprises an anti-glare layer and an anti-reflection layer formed on the anti-glare layer. In the functional film, the anti-glare layer comprises a resin component comprising a plurality of resins which phase-separate from each other, the anti-reflection layer has a first surface and a second surface contacting with the anti-glare layer and comprises a low-refractive-index particle and a high-refractive-index particle, and the high-refractive-index particle is localized near the second surface of the anti-reflection layer.Type: ApplicationFiled: March 27, 2009Publication date: October 1, 2009Inventors: Wataru HORIE, Mitsuaki Kumazawa, Shinji Kikuchi