Having Uv Polymerized Element Patents (Class 349/93)
  • Patent number: 7877265
    Abstract: A system and method for automated customer feedback allows for automatically collecting and analyzing customer feedback data regarding customer satisfaction and customer task completion with respect to self-service applications and live agents. When contacting a customer service center, customers provide one or more customer tasks. The customers are routed within the customer service center based on the customer task and/or one or more customer characteristics. While interacting with the customer service center, the customers are automatically asked one or more specific survey questions relating to the customers' interaction with the customer service center and the customers' satisfaction levels. The customers provide one or more survey responses to the survey questions. The survey responses are recorded and analyzed in order to modify and update the customer service center and the survey questions in order to increase customer satisfaction and increase customer task completion.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: January 25, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Theodore B. Pasquale, Robert R. Bushey, Benjamin A. Knott
  • Patent number: 7872719
    Abstract: A liquid crystal display including a pair of substrates having a predetermined cell gap and arranged opposite to each other, vertical alignment films formed between the pair of substrates, a liquid crystal layer sealed between the vertical alignment films and having a negative dielectric anisotropy, and a cured material provided in the liquid crystal layer and including a liquid crystal skeleton, which is tilted with respect to the substrate at a first angle, for changing tilt angles of liquid crystal molecules for each of predetermined regions. The vertical alignment films have an alignment control direction that defines a second angle with respect to said substrates, wherein the second angle is different from the first angle.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: January 18, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazutaka Hanaoka, Seiji Tanuma, Yohei Nakanishi, Kazuya Ueda, Shingo Kataoka, Takahiro Sasaki, Arihiro Takeda, Hideaki Tsuda, Takatoshi Mayama, Yuichi Inoue, Norio Sugiura
  • Patent number: 7859615
    Abstract: In a display apparatus that has a polymer dispersed liquid crystal material 25 encapsulated in a gap between a completed first substrate 1 and a completed second substrate 11 by using a sealing member 26 and has a display region M and a peripheral region N in a region where the polymer dispersed liquid crystal material 25 is encapsulated, a wiring electrode 19 having light shielding properties is provided in at least a part of the peripheral region N of the completed second substrate 11, and an ultraviolet ray transmitting portion 19a that transmits an ultraviolet ray therethrough is provided in the peripheral region where the wiring electrode 19 is provided. An ultraviolet ray is applied from the substrate side where the ultraviolet ray transmitting portion 19a is provided to polymerize a monomer in the peripheral region N. The ultraviolet ray transmitting portion is formed of, e.g., a plurality of small holes, and the small holes are dispersedly arranged at equal intervals.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: December 28, 2010
    Assignee: Citizen Holdings Co., Ltd.
    Inventors: Koichi Hoshino, Yuichi Akiba, Sachiko Kawada, Takashi Akiyama
  • Patent number: 7843531
    Abstract: To provide a liquid crystal display device of high image quality, and a manufacturing method therefor. A polymerizable compound in a liquid crystal composition is polymerized in a state that liquid crystal molecules present in a gap between a pixel electrode and at least either one of signal electrodes and scanning electrodes are tilted in a direction from the at least either one of the signal electrodes and the scanning electrodes toward the pixel electrode. Preferably, the amount of the polymerizable compound remaining in the liquid crystal phase after the polymerization is not more than 0.05 parts by weight per 100 parts by weight of the liquid crystal. In a seal section surrounding the liquid crystal layer, a second seal wall is preferably provided at a position opposite to the liquid crystal injection inlet in the non-display section.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: November 30, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yohei Nakanishi, Yuichi Inoue, Kazutaka Hanaoka, Hidefumi Yoshida, Yasutoshi Tasaka, Kunihiro Tashiro
  • Patent number: 7733442
    Abstract: A display device includes a first substrate, a second substrate, and microcapsules sandwiched between the first substrate and the second substrate, the microcapsules constituting a display area, the microcapsules encapsulating a display material whose optical properties change in response to electrical stimulation. A conductive material for conducting between the substrates is provided between the first substrate and the second substrate to constitute a vertically conducting portion. The thickness of the conductive material is set such that the distance between the first substrate and the second substrate at the vertically conducting portion is larger than the distance between the first substrate and the second substrate in the display area.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: June 8, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Masami Uchida
  • Patent number: 7728934
    Abstract: A method for fabricating a liquid crystal display (LCD) is provided. The method includes the steps stated below. At first, providing an LCD panel including a first substrate, a second substrate and a liquid crystal layer therebetween. The liquid crystal layer includes several photo-sensitive monomers and several liquid crystal molecules. The LCD panel has at least a first pixel and a second pixel. Afterwards, correspondingly driving the first pixel and the second pixel by the first voltage and the second voltage. At last, applying a ultra-violet source onto the LCD panel to enable several photo-sensitive monomers to polymerize several alignment polymers on the first substrate and the second substrate.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: June 1, 2010
    Assignee: AU Optronics Corp.
    Inventor: Hao-Yu Chang
  • Publication number: 20100123859
    Abstract: A method of fabricating liquid crystal display (LCD) that may improves picture quality by removing uncured monomers in a liquid crystal panel and an LCD obtained by the method are provided. The method includes forming a liquid crystal layer between a first substrate and a second substrate by injecting liquid crystal molecules and monomers between the first substrate and the second substrate, the first and second substrates facing each other; applying an electric field to the liquid crystal layer; performing a primary curing operation on the monomers; and removing the electric field and performing a secondary curing operation on remaining monomers, wherein at least one of the primary curing operation and the secondary curing operation includes maintaining a temperature of the liquid crystal layer below a phase transition temperature of the liquid crystal molecules.
    Type: Application
    Filed: October 5, 2009
    Publication date: May 20, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jong-Ho SON, Seung-Beom Park, Myeong-Ha Kye, Hoon Kim, Min-Goo Seok, Seon-Ah Cho
  • Patent number: 7697098
    Abstract: 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: Grant
    Filed: September 14, 2006
    Date of Patent: April 13, 2010
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Daisuke Kubota, Takeshi Nishi, Tetsuji Ishitani
  • Publication number: 20100039588
    Abstract: A method is provided for manufacturing an electrooptic cell, which includes two plates of optically transparent material and at least one thickness of a composite gel based on a smectic liquid crystal and on a polymer provided between the plates, wherein the gel is in a smectic phase at ambient temperature. The method includes injecting a mixture of a ferroelectric and/or anti-ferroelectric smectic liquid and a monomer between the plates, wherein the monomer content of the mixture is between 5 and 25% by weight. The mixture is heated to above its smectic phase/nematic phase transmission temperature so that the mixture is in the nematic phase. The mixture is irradiated, by ultraviolet radiation, so as to polymerize the monomer and thus obtain the gel. During the irradiation step, an electric or magnetic field is applied to the mixture.
    Type: Application
    Filed: April 2, 2008
    Publication date: February 18, 2010
    Applicant: INSTITUT TELECOM/TELECOM BRETAGNE
    Inventors: Bertrand Caillaud, Pascal Gautier, Jean-Louis De Bougrenet De La Tocnaye, Laurent Dupont, Aline Guenot
  • Patent number: 7643108
    Abstract: A liquid crystal display panel is provided. The panel comprises a first substrate and a second substrate which have a display area and a non-display area, which is located around the display area. The panel comprises a plurality of dummy pixel structures in the non-display area to provide a voltage for aligning the liquid crystal materials in the non-display area.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: January 5, 2010
    Assignee: AU Optronics Corp.
    Inventors: Shui Huang, Wei-Chieh Sun
  • Publication number: 20090290102
    Abstract: A transfer material comprising at least one optically anisotropic layer and at least one photosensitive polymer layer on at least one support, wherein said optically anisotropic layer comprises one or more compounds having a reactive group, and said photosensitive polymer layer comprises two or more types of photopolymerization initiators having different photoreaction mechanisms to each other, and a compound having a reactive group which can react with one or more of the reactive groups present in the optically anisotropic layer by the action of the at least one of said photopolymerization initiators. By using the transfer material, a color filter which contributes to reducing viewing angle dependence of color of a liquid crystal display device, and a liquid crystal display device having less corner non-uniformities and less viewing angle dependence of color.
    Type: Application
    Filed: September 8, 2006
    Publication date: November 26, 2009
    Applicant: FUJIFILM Corporation
    Inventors: Ichiro Amimori, Hideki Kaneiwa, Hidetoshi Tomita
  • Patent number: 7586561
    Abstract: The invention has an object to provide a liquid crystal display in which a wide angle of view is obtained and a response time at a halftone can be shortened by regulating an alignment orientation of a liquid crystal by the use of a polymer fixation system in which a liquid crystal layer containing a polymerizable component is sealed between substrates, and the polymerizable component is polymerized while a voltage is applied to the liquid crystal layer to fix a liquid crystal alignment. A liquid crystal layer containing a polymer for regulating a pretilt angle of a liquid crystal molecule and a tilt direction at a time of driving is sealed between two substrates arranged opposite to each other.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: September 8, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Kazutaka Hanaoka
  • Patent number: 7567332
    Abstract: A method of manufacturing a display panel and a display panel are described. A first substrate is provided. A wall structure is formed on the first substrate to define several microcups. A displaying medium is filled into the microcups. Thereafter, a sealing material is formed over the microcups filled with the displaying medium. A second substrate is put over the sealing material and a lamination process is performed, wherein the sealing material which contacts the wall structure bonds the second substrate to the wall structure, and the sealing material which contacts the displaying medium dissolves in the displaying medium.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: July 28, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Jau-Min Ding, Yan-Rung Lin, Ru-De Chen, Chung-Hao Chen, I-Chun Chen, Chun-Yuan Lin, Wei-Hsin Hou
  • Patent number: 7561227
    Abstract: A liquid crystal display device comprises a liquid crystal layer formed between first and second substrates, the liquid crystal layer being divided into at least two layers.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: July 14, 2009
    Assignee: LG. Display Co., Ltd.
    Inventors: Su-Seok Choi, Sang-Ho Choi
  • Patent number: 7537811
    Abstract: A liquid crystal display device is manufactured by placing a liquid crystal composition in the gap between two parallel substrates followed by polymerization to form a liquid crystal layer, wherein the liquid crystal composition comprises a free radical scavenger, no voltage is applied between the electrodes at an initial polymerization period, ultraviolet rays are irradiated at an intensity of 1 mW/cm2 or less at an initial polymerization period, the liquid crystal composition is subjected, prior to the polymerization, to heat treatment at a temperature equal to or above the phase transition temperature of the used liquid crystal, or the liquid crystal composition is supplied dropwise onto a substrate and the substrates are bonded together in vacuum to place the liquid crystal composition into the gap between the substrates. A liquid crystal display device with no or little occurrence of display irregularities is provided.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: May 26, 2009
    Assignees: Fujitsu Limited, Au Optronics Corporation
    Inventors: Yuichi Inoue, Kengo Kanii
  • Patent number: 7528903
    Abstract: A display device includes a first substrate, a second substrate, and microcapsules sandwiched between the first substrate and the second substrate, the microcapsules constituting a display area, the microcapsules encapsulating a display material whose optical properties change in response to electrical stimulation. A conductive material for conducting between the substrates is provided between the first substrate and the second substrate to constitute a vertically conducting portion. The thickness of the conductive material is set such that the distance between the first substrate and the second substrate at the vertically conducting portion is larger than the distance between the first substrate and the second substrate in the display area.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: May 5, 2009
    Assignee: Seiko Epson Corporation
    Inventor: Masami Uchida
  • Patent number: 7505094
    Abstract: A black-white liquid crystal display using a cholesteric liquid crystal material and a method for manufacturing such a liquid crystal display using polymerization/phase-separation, resulting in diffused polymeric molecules and polymeric cell walls, so as to minimize the manufacturing time, strengthen the polymeric wall and enhance the contrast ratio as well as the brightness.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: March 17, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Yi-An Sha, Chi-Chang Liao, Hsing-Lung Wang
  • Patent number: 7492417
    Abstract: Disclosed is an active matrix liquid crystal display device designed mainly for alternating electric current drive, in which orientation processing (monostabilization) is performed by a direct current power supply or a direct current voltage applied to a ferroelectric liquid crystal. The liquid crystal is made to respond, and is made monostable while a voltage level is maintained by a storage capacitor. In addition, the liquid crystal may also be made monostable while maintaining a gate clock pulse at a constant level. After forming a transparent conductive film on an element substrate, elements such as TFTs are formed. An electric field is applied by a direct current voltage source between an electrode formed on an opposing substrate and the transparent conductive film. An electric field is applied by a direct current voltage source between the electrode formed on the opposing substrate and the transparent conductive film formed on the back side of the element substrate.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: February 17, 2009
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshiharu Hirakata, Rumo Satake
  • Publication number: 20090015760
    Abstract: A method for manufacturing a thin film transistor including a step of forming a polymer film (a) to a layer above a support substrate, a step of forming a semiconductor element above the polymer film (a), and a step of separating the support substrate from the polymer film (a) formed with the semiconductor element in which the polymer film (a) has a thickness of 1 ?m or more and 30 ?m or less, a transmittance of 80% or higher to a visible light at a wavelength of 400 nm or more and 800 nm or less, a 3 wt % loss temperature of 300° C. or higher, and a melting point of 280° C. or higher.
    Type: Application
    Filed: July 3, 2008
    Publication date: January 15, 2009
    Inventors: Takashi Hattori, Mutsuko Hatano
  • Patent number: 7477349
    Abstract: A method of manufacturing a bistable liquid crystal device comprises initially forming a cell from first and second opposed spaced-apart cell walls (1) enclosing a layer of nematic liquid crystal material (4) having a photopolymerizable polymer precursor dissolved therein. Electrodes (2) for applying an electric field across at least some of the liquid crystal material are provided on at least one cell wall. The inner surface of at least the first cell wall is provided with a grating alignment structure (2), and the cell is illuminated with suitable light to effect photopolymerization of the polymer precursor through the first cell wall. This causes polymerization to occur close to the first cell wall and deposition of the resulting polymeric material as a coating on the grating alignment structure on the first cell wall.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: January 13, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: David Sikharulidze
  • Patent number: 7474372
    Abstract: A liquid crystal display device having liquid crystal cells arranged in a matrix type, includes a gate line for receiving a scanning signal; a data line for receiving a data signal; a pixel electrode provided at an intersection of the gate line and the data line to drive a liquid crystal cell; a thin film transistor for responding to the scanning signal to switch the data signal into the pixel electrode; and an alignment film formed on at least a portion of the gate line, the data line and the pixel electrode to determine a primary alignment direction of a liquid crystal.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: January 6, 2009
    Assignee: LG Display Co., Ltd.
    Inventor: Yun Bok Lee
  • Patent number: 7446830
    Abstract: Disclosed is a method for aligning polymer network liquid crystal. In the method, alignment of liquid crystal in a bulk state is controlled by means of an orientation power of polymer material itself which is formed by irradiating linearly polarized ultraviolet rays to monomer material having an orientation power, thereby achieving a transparent state at an initial state without an orientation layer. That is, Linearly polarized ultraviolet rays are irradiated to ultraviolet-hardening type monomers having an orientation power. Alignment of liquid crystal of a bulk state is controlled while the monomers are changed to polymers, thereby achieving an initial transparent state. The molecules of the liquid crystal are placed in disorder by a vertical electric field and the horizontal orientation power of a polymer chain.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: November 4, 2008
    Assignee: Boe Hydis Technology Co., Ltd.
    Inventors: Mi Sook Kim, Sung Hun Song, Seung Hee Lee
  • Patent number: 7423700
    Abstract: Provided are an aberration-compensating liquid crystal device, a method of manufacturing the same, an optical pickup including the liquid crystal device, and an optical recording and/or reproducing apparatus employing the optical pickup. The method of manufacturing an aberration-compensating liquid crystal device comprises: positioning a gray scale mask having an absorption rate distribution corresponding to that of aberrations to be corrected on a liquid crystal cell containing a mixture of liquid crystals and monomers injected between a pair of transparent substrates; and irradiating the liquid crystal cell on which the gray scale mask has been positioned with UV light so that the monomers undergo photopolymerization into polymer and phase separation into a polymer-existing region and a liquid crystal-existing region, thereby forming a liquid crystal layer having a phase difference distribution corresponding to that of aberrations to be corrected.
    Type: Grant
    Filed: January 4, 2006
    Date of Patent: September 9, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae-kyung Kim, Hee-kyung Kim, Woo-seok Choi
  • Patent number: 7408601
    Abstract: Inhomogeneous concentrated polymer network with approximately 90° twisted nematic liquid crystal (TN-LC) is used for fabricating lens and prisms. For forming a positive lens, the approximately 90° TN-LC polymer network concentration can gradually decrease from the center to the side edges. For forming a negative lens, the approximately 90° TN-LC polymer network concentration can gradually increase from the center to the side edges. The lens can be created by ultra violet (UV) light exposure to patterned photo masks. The lens can be tuned by applying voltage above the threshold voltage to the polymer network. The inhomogeneous 90° TN-LC polymer network can also be used in Fresnel lens and prisms. Applications of the invention can be used for micro lens, array, optical communication, micro-optics, adaptive optics and beam steering.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: August 5, 2008
    Assignee: Research Foundation of the University of Central Florida, Inc.
    Inventors: Yuhua Huang, Hongwen Ren, Xinyu Zhu, Shin-Tson Wu
  • Patent number: 7372535
    Abstract: An object of the present invention is to provide a liquid crystal display, which can surely perform an instillation process used when liquid crystal is sealed between substrates in a cell process, and a fabrication method thereof. A liquid crystal display comprises a sealing material 6 made of a photo-curing type material which seals liquid crystal 22 sandwiched between substrates 4 and 16, and a shading film 8 having a shading area which overlays a red-colored layer 28 transmitting red light, a green-colored layer 26 transmitting green light and a blue-colored layer 24 transmitting blue light, wherein only the blue-colored layer 24 is formed in an area of the shading film contacting with the sealing material 6 and the photo-curing type material of the sealing material is structured to have a light reactive area for a wavelength of blue color band.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: May 13, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kunihiro Tashiro, Takuya Yoshimi, Yoshio Koike, Satoru Imai, Hideaki Tsuda, Hiroyasu Inoue, Satoshi Murata, Hidehiko Suzuki, Hidefumi Yoshida, Tadashi Hasegawa, Yoji Taniguchi, Norimichi Nakayama, Hiroyuki Sugimura, Minoru Otani
  • Patent number: 7361389
    Abstract: A smectic liquid crystal device and process for producing the same are provided to realize uniform orientation of a smectic liquid crystal with no nematic phase in a phase sequence represented by an antiferroelectric liquid crystal; and a process for producing the same. The process comprises the steps of inducing an isotropic phase-nematic phase-smectic phase as a phase sequence of mixture obtained by adding a photopolymerizable monomer liquid crystal exhibiting nematic phase to a smectic liquid crystal; and irradiating the mixture with UV rays so that the monomer is photopolymerized into a polymer to thereby form a smectic liquid crystal medium with uniform orientation structure.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: April 22, 2008
    Assignee: Japan Science and Technology Agency
    Inventors: Hirokazu Furue, Hiroshi Yokoyama
  • Patent number: 7345719
    Abstract: The invention relates to a manufacturing method of a liquid crystal display device in which an alignment direction of a liquid crystal molecule at the time of driving is regulated by using a polymer, and has an object to provide a manufacturing method of a liquid crystal display device in which excellent display characteristics can be obtained. A liquid crystal layer containing a polymerizable component capable of being polymerized by light is sealed between two substrates arranged to be opposite to each other, the polymerizable component is polymerized by irradiation of light under a predetermined light irradiation condition while a voltage is applied to the liquid crystal layer under a predetermined voltage application condition, and when a pre-tilt angle of a liquid crystal molecule and/or an alignment direction at a time of driving is regulated, at least one of the voltage application condition and the light irradiation condition is changed for each region.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: March 18, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Katsuhiko Kishida, Yohei Nakanishi
  • Patent number: 7176992
    Abstract: A method of fabricating an optical device by providing a nematic liquid crystal; providing a photo-curable pre-polymer mixture; mixing the nematic liquid crystal with the photo-curable pre-polymer mixture to form a homogeneous nematic/pre-polymer mixture, with the nematic liquid crystal representing greater than 40% (by weight) of the combined homogeneous mixture. Providing a cell including a pair of transparent substrates that are each coated with a transparent conductive layer when creating an electrooptic device and omitting the conductive layers when creating a static device. Separating the substrates by approximately 5–20 ?m or greater; filling the cell with the homogeneous nematic/pre-polymer mixture; and photo-curing the nematic/pre-polymer mixture using a spatially inhomogeneous illumination source thereby forming a polymer dispersed liquid crystal (PDLC) film exhibiting low scattering loss and high index modulation.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: February 13, 2007
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventor: John C. Kralik
  • Patent number: 7123320
    Abstract: A liquid crystal electro-optical device comprising a pair of substrates at least one of them is light-transmitting, electrodes being provided on said substrates, and an electro-optical modulating layer being supported by said pair of substrates, provided that said electro-optical modulating layer comprises an anti-ferroelectric liquid crystal material or a smectic liquid crystal material which exhibits anti-ferroelectricity, and a transparent material.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: October 17, 2006
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Takeshi Nishi, Toshimitsu Konuma, Michio Shimizu, Kouji Moriya
  • Patent number: 7123319
    Abstract: A liquid crystal display laminate comprises a liquid crystal layer and a single substrate for confining that layer, allowing the liquid crystal layer to be provided using a wet deposition method such as printing or coating. To improve mechanical stability and provide protection and keep the liquid crystal layer in place, a cover layer may be provided on the liquid crystal layer. The cover layer and liquid crystal layer may together form a stratified-phase-separated composite in which case the liquid crystal layer and the cover layer are provided simultaneously. The display laminate is very thin and light weight. The display laminate may include or be combined with further layers such as orientation layers, electrode layers, polarizers and/or retarders layer to form a fully functional, high contrast display device.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: October 17, 2006
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Dirk Jan Broer, Roel Penterman
  • Patent number: 7102706
    Abstract: Disclosed is a method for aligning polymer network liquid crystal. In the method, alignment of liquid crystal in a bulk state is controlled by means of an orientation power of polymer material itself which is formed by irradiating linearly polarized ultraviolet rays to monomer material having an orientation power, thereby achieving a transparent state at an initial state without an orientation layer. That is, Linearly polarized ultraviolet rays are irradiated to ultraviolet-hardening type monomers having an orientation power. Alignment of liquid crystal of a bulk state is controlled while the monomers are changed to polymers, thereby achieving an initial transparent state. The molecules of the liquid crystal are placed in disorder by a vertical electric field and the horizontal orientation power of a polymer chain.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: September 5, 2006
    Assignee: Boe Hydis Technology Co., Ltd.
    Inventors: Mi Sook Kim, Sung Hun Song, Seung Hee Lee
  • Patent number: 7079203
    Abstract: Inhomogeneous concentrated polymer network with approximately 90° twisted nematic liquid crystal (TN-LC) is used for fabricating lens and prisms. For forming a positive lens, the approximately 90° TN-LC polymer network concentration can gradually decrease from the center to the side edges. For forming a negative lens, the approximately 90° TN-LC polymer network concentration can gradually increase from the center to the side edges. The lens can be created by ultra violet (UV) light exposure to patterned photo masks. The lens can be tuned by applying voltage above the threshold voltage to the polymer network. The inhomogeneous 90° TN-LC polymer network can also be used in Fresnel lens and prisms. Applications of the invention can be used for micro lens, array, optical communication, micro-optics, adaptive optics and beam steering.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: July 18, 2006
    Assignee: Research Foundation of the University of Central Florida, Inc.
    Inventors: Yuhua Huang, Hongwen Ren, Xinyu Zhu, Shin-Tson Wu
  • Patent number: 7011870
    Abstract: A liquid crystal/cured composite layer is formed by sandwiching a mixture of a liquid crystal with an uncured curable compound i.e. a curable compound represented by a structure of an acryloyl group-(OR1)n—O-mesogen structural portion-O—(R2O)m-acryloyl group structure (wherein each of R1 and R2 is a C2-6 alkylene group, and each of n and m is from 1 to 10), between a pair of substrates provided with transparent electrodes, and curing the curable compound.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: March 14, 2006
    Assignee: Asahi Glass Company, Limited
    Inventors: Satoshi Niiyama, Shinya Tahara
  • Patent number: 6970211
    Abstract: A bistable liquid crystal device is made from a cell having first and second opposed spaced-apart cell walls enclosing a layer of nematic liquid crystal material having a photopolymerisable polymer precursor dissolved therein. Electrodes for applying an electric field across at least some of the liquid crystal material are on at least one cell wall. The inner surface of at least the first cell wall has a grating alignment structure. The cell is illuminated to photopolymerize the polymer precursor through the first cell wall. This causes polymerization close to the first cell wall and deposition of the resulting polymeric material as a coating on the grating alignment structure on the first cell wall.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: November 29, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: David Sikharulidze
  • Patent number: 6942906
    Abstract: A resin sheet containing dispersed particles which is thin and lightweight, and has excellent mechanical strength and light-diffusing properties. The resin sheets may be used in liquid crystal displays. A resin sheet having a hard coat layer, an epoxy resin layer containing 100 parts by weight of the resin to 200 parts by weight of a diffuser having a refractive index different from that of the epoxy resin and having an average particle diameter from 0.2 to 100 ?m, and a thin metal layer as a reflecting layer, wherein the diffuser localizes so as to have a concentration distribution in the direction of the thickness of the epoxy resin layer. A resin sheet having dispersed particles which is obtained by superposing a reflecting layer, an inorganic gas barrier layer, or a color filter layer thereon. A process for producing the resin sheet having a color filter layer.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: September 13, 2005
    Assignee: Nitto Denko Corporation
    Inventors: Yoshimasa Sakata, Toshiyuki Umehara, Kiichi Shimodaira, Kazutaka Hara, Yoshihiro Kitamura, Katsuhiro Nakano
  • Patent number: 6937300
    Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: August 30, 2005
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Hiroyasu Inoue, Yuji Nakahata, Yoji Taniguchi
  • Patent number: 6936313
    Abstract: A resin sheet containing dispersed particles which is thin, lightweight, and has excellent mechanical strength and light-diffusing properties. The resin sheets may be used in liquid crystal displays. A resin sheet having a hard coat layer, an epoxy resin layer containing 100 parts by weight of the resin to 200 parts by weight of a diffuser having a refractive index different from that of the epoxy resin and having an average particle diameter from 0.2 to 100 ?m, and a thin metal layer as a reflecting layer, wherein the diffuser localizes so as to have a concentration distribution in the direction of the thickness of the epoxy resin layer. A resin sheet having dispersed particles which is obtained by superposing a reflecting layer, an inorganic gas barrier layer, or a color filter layer thereon. A process for producing the resin sheet having a color filter layer.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: August 30, 2005
    Assignee: Nitto Denko Corporation
    Inventors: Yoshimasa Sakata, Toshiyuki Umehara, Kiichi Shimodaira, Kazutaka Hara, Yoshihiro Kitamura, Katsuhiro Nakano
  • Patent number: 6909478
    Abstract: The present invention provides a method for producing a cholesteric liquid crystal color filter having excellent color pixel resolution. The method features forming a liquid crystal layer which includes a cholesteric liquid crystal composition containing at least a liquid crystal compound, a photoreactive chiral dopant, and a polymerization initiator; and forming partition walls at portions corresponding to a boundary of each of pixels to be formed, by irradiating those portions through a mask with ultraviolet light at a wavelength to which the polymerization initiator is sensitive, either before or after the pixels are formed in the liquid crystal layer.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: June 21, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mitsuyoshi Ichihashi, Yuichi Wakata
  • Patent number: 6903787
    Abstract: The invention relates to a manufacturing method of a liquid crystal display device in which an alignment direction of a liquid crystal molecule at the time of driving is regulated by using a polymer, and has an object to provide a manufacturing method of a liquid crystal display device in which excellent display characteristics can be obtained. A liquid crystal layer containing a polymerizable component capable of being polymerized by light is sealed between two substrates arranged to be opposite to each other, the polymerizable component is polymerized by irradiation of light under a predetermined light irradiation condition while a voltage is applied to the liquid crystal layer under a predetermined voltage application condition, and when a pre-tilt angle of a liquid crystal molecule and/or an alignment direction at a time of driving is regulated, at least one of the voltage application condition and the light irradiation condition is changed for each region.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: June 7, 2005
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Katsuhiko Kishida, Yohei Nakanishi
  • Patent number: 6894741
    Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: May 17, 2005
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Yohei Nakanishi, Kazutaka Hanaoka, Yuichi Inoue, Masakazu Shibasaki
  • Patent number: 6894742
    Abstract: A method of fabricating a liquid crystal display device including the steps of forming a liquid crystal layer by filling a liquid crystal composition containing a polymerizable monomer into a gap between a pair of substrates having electrodes; and polymerizing the monomer by radiating ultraviolet light to the liquid crystal composition while applying a prescribed liquid crystal driving voltage between opposing electrodes. The method also includes a step of applying additional ultraviolet radiation to the liquid crystal composition, after polymerizing the monomer, without applying the liquid crystal driving voltage or while applying a voltage of a magnitude that does not substantially drive the liquid crystal.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: May 17, 2005
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Hiroyasu Inoue, Yuji Nakahata, Yoji Taniguchi
  • Publication number: 20040263719
    Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.
    Type: Application
    Filed: July 16, 2004
    Publication date: December 30, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Hiroyasu Inoue, Yuji Nakahata, Yoji Taniguchi
  • Publication number: 20040246406
    Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.
    Type: Application
    Filed: July 16, 2004
    Publication date: December 9, 2004
    Applicant: FUJITSU DISPLAY TECHNOLOGIES CORPORATION
    Inventors: Hiroyasu Inoue, Yuji Nakahata, Yoji Taniguchi
  • Patent number: 6825892
    Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: November 30, 2004
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Hiroyasu Inoue, Kenichi Nagaoka, Yuji Nakahata, Yoji Taniguchi
  • Publication number: 20040174471
    Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.
    Type: Application
    Filed: March 11, 2004
    Publication date: September 9, 2004
    Applicant: Fujitsu Display Technologies Corporation
    Inventors: Yohei Nakanishi, Kazutaka Hanaoka, Yuichi Inoue, Masakazu Shibasaki
  • Patent number: 6788360
    Abstract: A stacked liquid cell, such as a stacked liquid crystal cell, comprises a stack of liquid layers and substrate layers between which the liquid layers are dispersed. The stack comprises a liquid and polymeric substrate layers made from a stratified-phase-separated composite. Being part of a stratified-phase-separated composite, in particular one manufactured in accordance with a single-substrate method, the polymeric layer may have a relative small thickness compared a conventional substrate layer which results in a stacked liquid cell having a reduced thickness or, more particular, a stacked liquid cell having a reduced thickness between subjacent liquid layers giving a reduction in parallax effects. A method of manufacturing a liquid cell involves stratifying, on a substrate, a layer of stratified-phase-separable composition into a liquid layer and a polymeric layer to form a stratified-phase-separated composite, the polymeric layer serving as one of the substrate of the liquid cell.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: September 7, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Roel Penterman, Dirk Jan Broer
  • Publication number: 20040169790
    Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.
    Type: Application
    Filed: March 11, 2004
    Publication date: September 2, 2004
    Applicant: Fujitsu Display Technologies Corporation
    Inventors: Hiroyasu Inoue, Kenichi Nagaoka, Yuji Nakahata, Yoji Taniguchi
  • Patent number: 6778229
    Abstract: When radiating light onto a liquid crystal composition containing a photosensitive material, the alignment of liquid crystal molecules is adjusted by applying a voltage to the liquid crystal composition layer, to achieve substantially orderly alignment of the liquid crystal molecules, or the alignment of the liquid crystal molecules is made uniform by adjusting the structure of the liquid crystal display device, or any display defect is driven out of the display area. When radiating light to the liquid crystal composition containing the photosensitive material, the alignment of the liquid crystal molecules can be adjusted so as to achieve substantially orderly alignment of the liquid crystal molecules, and the liquid crystal display device can thus be driven stably.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: August 17, 2004
    Assignee: Fujitsu Display Technologies Corporation
    Inventors: Hiroyasu Inoue, Kenichi Nagaoka, Yuji Nakahata, Yoji Taniguchi
  • Patent number: 6767774
    Abstract: A polymer or organic light emitting display may be formed on a substrate by patterning the light emitting material using a screen printing technique. In this way, displays may be formed economically, overcoming the difficulties associated with photoprocessing light emitting materials. A binary optic material may be selectively incorporated into sol gel coatings coated over light emitting elements formed from the light emitting material. A tricolor display may be produced using a light emitting material that produces a single color.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: July 27, 2004
    Assignee: Intel Corporation
    Inventors: Robert C. Sundahl, Azar Assadi
  • Patent number: 6690439
    Abstract: A method of manufacturing cholesteric liquid crystal (CLC) color filters in which an alignment treatment is accomplished simultaneously with a coloring process during a light exposure process using ultraviolet ray. Photochromic CLC is used for the cholesteric liquid crystal (CLC) and a photosensitive alignment material is used for an alignment layer.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: February 10, 2004
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Ji-Young Ahn, Jong-Weon Moon