Aligning Liquid Crystal With Means Other Than Alignment Layer Patents (Class 349/191)
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Publication number: 20100053526Abstract: A liquid crystal display (“LCD”) panel includes a display substrate, an opposite substrate and a liquid crystal layer. The display substrate includes a pixel electrode and a first cured layer. The first cured layer has various pretilt angles. The opposite substrate includes a common electrode and a second cured layer. The second cured layer has various pretilt angles. The liquid crystal layer includes a plurality of liquid crystal molecules pretilted at the various pretilt angles by the first and second cured layers.Type: ApplicationFiled: April 6, 2009Publication date: March 4, 2010Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Myeong-Ha KYE, Jae-Jin LYU, Ji-Won SOHN
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Publication number: 20100053527Abstract: A method for manufacturing a liquid crystal display (LCD) panel is provided. The method comprises the following steps. Firstly, an upper substrate and a lower substrate are provided. Next, a liquid crystal material is interposed between the upper and lower substrates. The liquid crystal material comprises at least one liquid crystal molecule and at least two photosensitive monomers, and the absorption peak of at least one photosensitive monomer is larger than 300 nm. Then, a voltage is applied between the upper substrate and the lower substrate, and a ultra-violet with a first wavelength is used for irradiation so as to allow most photosensitive monomers to be polymerized as polymer. Lastly, a ultra-violet with a second wavelength is used for irradiation, wherein the second wavelength is larger than the first wavelength so as to allow residual photosensitive monomers to be polymerized.Type: ApplicationFiled: August 3, 2009Publication date: March 4, 2010Applicant: AU OPTRONICS CORP.Inventors: Chung-Ching Hsieh, Chia-Hsuan Pai, Cheng-Wei Huang, Te-Sheng Chen, Norio Sugiura
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Patent number: 7667816Abstract: A liquid crystal drop fill device by which liquid crystal panels of different sizes is easily obtained from a mother glass, and a method for drop filling liquid crystal by using the device is provided in order to increase utilization efficiency of the mother glass. The device 1 includes a stage 3 arranged to support a substrate 2, liquid crystal dispensers 4 and 5 arranged to drop fill liquid crystal on the substrate 2, a first moving unit 6 arranged to support the dispensers 4 and 5 movably in a Y-direction relative to the stage 3, and second moving units 7 and 8 arranged to support the dispensers 4 and 5 movably in an X-direction relative to the first moving unit 6, wherein the device 1 further includes a third moving unit 9 arranged to support the dispenser 5 to be further movable in the Y-direction relative to the second moving unit 8.Type: GrantFiled: June 27, 2006Date of Patent: February 23, 2010Assignee: Sharp Kabuhsiki KaishaInventor: Shinichi Hirato
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Publication number: 20100033662Abstract: A liquid crystal display including a first substrate; a second substrate facing the first substrate; a first field generating electrode disposed on the first substrate; a second field generating electrode disposed on the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate, the liquid crystal layer including a liquid crystal and an alignment assistant, wherein the alignment assistant includes a mesogen and two or more photo-polymerizable groups.Type: ApplicationFiled: April 1, 2009Publication date: February 11, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Jun-Hyup LEE, Jae-Jin LYU
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Publication number: 20100020284Abstract: The invention relates to a method of aligning reactive mesogens (RM) on a substrate subjected to particle beam treatment, to RM's oriented by said method, especially in form of thin layers, to oriented polymers and polymer films obtained from such oriented RM's and RM layers, and to the use of the RM's, layers, polymers and films in optical, electronic and electrooptical applications.Type: ApplicationFiled: August 10, 2007Publication date: January 28, 2010Inventors: Owain Llyr Parri, Alison Linda May, Julian Vaughan-Spickers, Karl Skjonnemand, Oleg Yaroshchuck
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Publication number: 20100020280Abstract: A method of aligning liquid crystals in a cell includes the steps of optimizing the concentration of the liquid crystal in a carrier medium, transforming the liquid crystal into its isotropic phase; heating the cell to a temperature which is slightly lower than the temperature of the liquid crystal, filling the cell with the liquid crystal, rapidly cooling the filled cell to transform the liquid crystal into the nematic phase and rewarming the cell to a temperature approximately at the phase line separating the nematic phase from the mixed nematic nematic-isotropic phase. An improved alignment surface for forming the cell comprises an uncoated, rubbed surface to drive uniform alignment of the liquid crystals.Type: ApplicationFiled: March 13, 2008Publication date: January 28, 2010Applicant: Pathogen Dection Systems, Inc. d/b/a Pathogen Systems, Inc.Inventor: Jeffery C. Hill
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Publication number: 20100007844Abstract: A variable focus liquid crystal lens includes a nematic liquid crystal/monomer mixture having a spatially inhomogenous polymer network structure, and an electrode for applying a substantially uniform voltage to the nematic liquid crystal/monomer mixture. The lens is created within a cell by applying a substantially uniform electric field to the nematic liquid crystal/monomer mixture within the cell, while simultaneously irradiating the nematic liquid crystal/monomer mixture using a laser beam having a shaped intensity distribution, so as to induce formation of a spatially inhomogenous polymer network structure within the cell.Type: ApplicationFiled: July 14, 2009Publication date: January 14, 2010Applicant: UNIVERSITE LAVALInventors: Tigran GALSTIAN, Vladimir PRESNIAKOV, Karen ASATRYAN, Amir TORK
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Publication number: 20090325453Abstract: A method for alignment treatment of a substrate for a liquid crystal display (LCD) device includes the steps of: forming an alignment film including a plurality of molecules with curable parts on a substrate; applying an electrical field on the substrate to rotate the curable parts; and curing the curable parts such that the curable parts are cured along a first direction. A manufacturing method of the LCD device is also disclosed.Type: ApplicationFiled: June 29, 2009Publication date: December 31, 2009Applicant: CHI MEI OPTOELECTRONICS CORP.Inventors: Han Lang LEE, Shu Hao HSU, Cheng-Hsu CHUANG
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Patent number: 7633590Abstract: An object of the present invention is to provide an image display device that is free from disconnection in a connection structure between given substrates even when operated in a hot and humid environment. An image display device according to a preferred embodiment of the invention has a TFT substrate and an FPC. The TFT substrate has a plurality of first terminals capable of application of potential. The FPC has second terminals that are connected respectively with the first terminals through an anisotropic conductive film and that are thicker than the first terminals. The second terminals include a high-potential terminal, a low-potential terminal, and a dummy terminal. The high-potential terminal is supplied with a relatively high potential that contributes to the display operation. The low-potential terminal is supplied with a relatively low potential that contributes to the display operation.Type: GrantFiled: February 21, 2006Date of Patent: December 15, 2009Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroshi Ueda, Hitoshi Morishita, Shigeaki Noumi
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Publication number: 20090290118Abstract: A liquid crystal display (LCD) device comprises a first substrate having a grooved surface profile; an alignment film layer of inorganic material formed on the grooved surface and having the grooved surface profile, the alignment film of inorganic material being aligned in response to an ion beam incident to the grooved surface in a direction parallel to a groove direction; a second substrate aligned opposite the first substrate for forming a plurality of LCD cells having liquid crystal (LC) material deposited therein, wherein LC molecules align parallel to the grooves for enhanced LCD performance.Type: ApplicationFiled: July 31, 2009Publication date: November 26, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Minhua Lu, Kei-Hsiung Yang
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Publication number: 20090231260Abstract: The invention provides a liquid crystal device and method thereof. Subsequent to applying a first electrical voltage on a liquid crystal to induce a reorientation of the liquid crystal, a second electrical voltage with proper polarity is applied on the liquid crystal to assist the relaxation of the reorientation that was induced by the first electrical voltage. The “switch-off” phase of the liquid crystal can therefore be accelerated or temporally shortened, and the device can exhibit better performance such as fast response to on/off signals. The invention can be widely used LCD, LC shutter, LC lens, spatial light modulator, telecommunication device, tunable filter, beam steering device, and electrically driven LC device, among others.Type: ApplicationFiled: March 12, 2009Publication date: September 17, 2009Inventors: Sergij V. Shiyanovskii, Mingxia Gu, Oleg D. Lavrentovich
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Publication number: 20090213320Abstract: A method of manufacturing a liquid crystal display includes providing a first display panel, providing a second display panel, disposing liquid crystals and an alignment additive between the first display panel and the second display panel, applying a gradually increasing pre-tilting voltage to the first display panel and the second display panel, and hardening the alignment additive.Type: ApplicationFiled: February 19, 2009Publication date: August 27, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Jong-Ho Son, Jae-Jin Lyu, Seung-Beom Park
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Publication number: 20090195746Abstract: A liquid crystal aligning device (10) includes a UV light source (11), a plurality of liquid crystal cells (13), a mask (12), and a drive circuit (14) is described. The mask (12) is positioned between the liquid crystal cells, containing a mixture of a UV polyimide solution and liquid crystal molecules (131), and the UV light source. The drive circuit applies a voltage to the liquid crystal cells. The liquid crystal cells include a reflective area (13a) and a transmissive area (13b), and after exposing the liquid crystal cells to the UV light source and the voltage from the drive circuit, a pretilt angle of the liquid crystal molecules in the reflective area is larger than that in the transmissive area. Further, an alignment method for liquid crystal cells is also described.Type: ApplicationFiled: June 30, 2008Publication date: August 6, 2009Applicant: CHI MEI COMMUNICATION SYSTEMS, INC.Inventor: Kuei-Lin Chu
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Patent number: 7557895Abstract: A method of manufacturing a liquid crystal display device includes preparing a pair of substrates that have a structure P1 having a height Hp1 and a structure P2 having a height Hp2, the heights Hp1 and Hp2 satisfying a relationship of 0.3 (?m) ?Hp1?Hp2?1.0 (?m); controlling a dropping amount V of liquid crystal so that a cell gap G1 that is determined by the dropping amount V of liquid crystal, the height Hp1 and the height Hp2 satisfying a relationship of Hp2<G1<Hp1; dropping the controlled dropping amount V of liquid crystal on one of the pair of substrates; and attaching the pair of substrates in a vacuum followed by returning to an atmospheric pressure to fill in the liquid crystal between the pair of substrates.Type: GrantFiled: October 29, 2007Date of Patent: July 7, 2009Assignees: Fujitsu Limited, Au Optronics CorporationInventors: Manabu Sawasaki, Yoji Taniguchi, Takashi Takagi
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Patent number: 7553392Abstract: A method of manufacturing a liquid crystal display device in which liquid crystal is sealed between substrates using a one drop fill method. Dropping of liquid crystal is controlled so that the dropping quantity of the liquid crystal is reduced in an area including the vicinity of a seal material on a side with a relatively narrow cell gap width while the dropping quantity of the liquid crystal is increased in an area including the vicinity of the seal material on a side with a relatively broad cell gap width. Alternatively, dropping of the liquid crystal is controlled so that the number of times the liquid crystal is dropped is reduced in the area including the vicinity of the seal material on one side while the number of times the liquid crystal is dropped is increased in the area including the vicinity of the seal material on another side without changing the dropping quantity of one drop.Type: GrantFiled: June 4, 2004Date of Patent: June 30, 2009Assignee: Sharp Kabushiki KaishaInventors: Shota Makimoto, Satoshi Murata, Hiroyuki Sugimura, Tetsuya Kida, Hidehiko Suzuki
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Publication number: 20090147211Abstract: To provide a liquid crystal optical device showing a low haze value in the transparent state, further an excellent stability in the transparent-scattering characteristics and productivity, and to provide a production process thereof. The liquid crystal optical device in the embodiment 1 of the present invention is a liquid crystal optical device 1 comprising a pair of insulating substrates 11 and 21, of which at least one is transparent, electrodes 12 and 22 formed on respective inner faces of the substrates, and a composite 50 comprising nematic liquid crystal and a cured material, interposed between the inner faces of the substrates.Type: ApplicationFiled: January 13, 2009Publication date: June 11, 2009Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Satoshi NIIYAMA, Remi KAWAKAMI
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Publication number: 20090115947Abstract: A liquid crystal display (LCD) panel including a color filter on array (COA) substrate, an opposite substrate, and a liquid crystal layer is provided. The opposite substrate has a common electrode, a plurality of main spacers, a plurality of spacer stages disposed on the common electrode and protruding toward the COA substrate, and a plurality of sub-spacers disposed on the common electrode. The main spacers are disposed on the spacer stages to maintain a cell gap between the COA substrate and the opposite substrate. The liquid crystal layer is disposed between the COA substrate and the opposite substrate. The above-mentioned LCD panel is an LCD panel with hybrid spacers having the main spacers and the sub-spacers.Type: ApplicationFiled: June 11, 2008Publication date: May 7, 2009Applicant: AU OPTRONICS CORPORATIONInventors: Yen-Heng Huang, Chung-Kai Chen, Shu-Chin Lee
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Patent number: 7528926Abstract: An apparatus for printing spacers on a substrate of an LCD includes a spacer supply roller having a plurality of recesses formed in its exterior surface. A plurality of uniform volumes of an ink containing the spacers is loaded into the recesses and then transferred from the supply roller onto a transfer belt that is arranged to move tangentially with respect to the supply roller by means of a transfer roller and an auxiliary roller. The LCD substrate is then moved tangentially with respect to the moving transfer belt such that the ink volumes on the transfer belt are transferred onto the substrate at selected locations thereon. The continuously rotating components of the apparatus enable it to accommodate LCD panels of any size without the need for large spacer supply substrates and transfer rollers and prevent the inadvertent deposition of multiple layers of spacers on the substrate.Type: GrantFiled: July 11, 2006Date of Patent: May 5, 2009Assignee: Samsung Electronics, Co., Ltd.Inventors: Byoung-Hun Sung, Bong-Sung Seo, Baek-Kyun Jeon, Jeong-Uk Heo
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Publication number: 20090079929Abstract: Alignments of liquid crystal are obtained. A transparent magnetic thin film provides a homeotropic alignment of liquid crystal molecules. Or, a homeotropic or homogeneous alignment having an adjustable pretilt angle is further obtained through rubbing the transparent magnetic thin film. The present invention has a simple procedure with a low cost. The present invention is used in equipment with a plasma source while providing high transmittance, hardness and insulation. And the transparent magnetic thin film has potential uses in the applications of non-contact multi-domain alignment without extra procedure for alignment treatment.Type: ApplicationFiled: March 24, 2008Publication date: March 26, 2009Applicant: National Chiao Tung UniversityInventors: Ru-Pin Chao, Hsin-Ying Wu
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Patent number: 7499131Abstract: A liquid crystal display device of the present invention has a first structure (protrusion) which is provided on a first substrate and which causes liquid crystal molecules in the vicinity of the first structure to align with a first direction when a voltage is applied, and a second structure (protrusion) which is provided at a position on the second substrate where the second structure is opposed to the first structure and which causes liquid crystal molecules in the vicinity of the second structure to align with a second direction when the voltage is applied. Here, the second direction is different from the first direction. The shapes or sizes of the first and second structures are different from each other.Type: GrantFiled: September 7, 2004Date of Patent: March 3, 2009Assignees: Fujitsu Limited, AU Optronics CorporationInventor: Takashi Sasabayashi
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Publication number: 20090040453Abstract: Methods for treating aligning substrates produces uniform alignment of liquid crystals in at least two modes. The method is based on the treatment of liquid crystal aligning substrates with a collimated or partially collimated plasma beam. In one embodiment, the method comprises a step of bombarding an aligning substrate with at least one plasma beam from a plasma beam source at a designated incident angle to align the atomic/molecular structure or the surface profile of the aligning substrate in at least one aligned direction.Type: ApplicationFiled: September 4, 2008Publication date: February 12, 2009Applicant: Kent State UniversityInventors: Liang-Chy Chien, Andriy Dobrovolskyy, Oleg Yaroshchuk, Oleg Lavrentovich
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Patent number: 7471380Abstract: A rubbing angle measuring equipment of the invention includes an light source unit, a measuring optical system, an imaging means, and an image evaluation means in which the measuring optical system is adapted such that a light from the light source unit passes by way of an illumination optical system and a polarizer to a rubbed measuring object and further passes by way of an analyzer and a focusing optical system to the imaging means, and the surface of the measuring object is focused to the imaging means, and in which image signals obtained by the imaging means are transmitted to the image evaluation means where signals having an intense periodicity in the image are detected, to measure the rubbing angle of the measuring object in a nondestructive manner, within a short period and at a high accuracy of 0.1° or more.Type: GrantFiled: March 30, 2007Date of Patent: December 30, 2008Assignee: Hitachi Displays, Ltd.Inventor: Atsushi Kishioka
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Patent number: 7468777Abstract: The present invention provides a method of producing an elliptically polarizing plate including the steps of: forming a first birefringent layer on a surface of a transparent protective film; laminating a polarizer on a surface of the transparent protective film; forming a second birefringent layer on a surface of the first birefringent layer; and forming a third birefringent layer on a surface of the second birefringent layer. The first birefringent layer is arranged on the opposite side against the polarizer with respect to the transparent protective film. The step of forming the first birefringent layer includes the steps of: applying a liquid crystal material onto a substrate subjected to an alignment treatment; treating the applied liquid crystal material, so as to form the first birefringent layer on the substrate; and transferring the first birefringent layer onto a surface of the transparent protective film.Type: GrantFiled: February 15, 2006Date of Patent: December 23, 2008Assignee: Nitto Denko CorporationInventors: Ikuo Kawamoto, Seiji Umemoto, Takashi Kamijou, Hideyuki Yonezawa, Kazuya Hada
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Patent number: 7420647Abstract: The present invention relates to a method for producing a liquid crystal display device, in which a pretilt angle and a tilt direction upon application of a voltage of liquid crystal molecules are controlled by using a polymer and is to provide a method for producing a liquid crystal display device that provides good display characteristics.Type: GrantFiled: March 29, 2004Date of Patent: September 2, 2008Assignee: Sharp Kabushiki KaishaInventor: Yuji Nakahata
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Patent number: 7405788Abstract: A method that uses at least one hydrogen ion beam for alignment of liquid crystal molecules is proposed in the present invention. The method of the present invention is proposed to resolve the problems of physical destruction and surface deterioration of the alignment films caused by the conventional method using argon ions beams. The method of the present invention directly uses at least one hydrogen ion beam to impact the alignment film. Hence, the physical destruction of the alignment film is reduced. In addition, via the reaction between hydrogen ions and the alignment films, the quality of the alignment film is improved.Type: GrantFiled: October 5, 2005Date of Patent: July 29, 2008Assignees: Taiwan TFT LCD Association, Chunghwa Picture Tubes, Ltd., Au Optronics Corp., Quanta Display Inc., Hannstar Display Corp., Chi Mei Optoelectronics Corp., Industrial Technology Research Institute, Toppoly Optoelectronics Corp.Inventors: Bang-Hao Wu, Ching-Wen Hsiao, Yu-Ming Chen, Hsin-Chun Chiang, Chung-Wen Wu
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Patent number: 7405793Abstract: The present invention relates to an electronic device, based on discotic liquid crystalline material, to methods of production of such a device, and to uses thereof.Type: GrantFiled: February 24, 2004Date of Patent: July 29, 2008Assignee: Sony Deutschland GmbHInventors: Silvia Rosselli, Gabriele Nelles, Akio Yasuda
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Publication number: 20080151145Abstract: Provided is a method of manufacturing a liquid crystal display element which improve aperture ratio of a panel while maintaining good response characteristics against voltage in VA mode using liquid crystal having negative dielectric constant anisotropy. The method of manufacturing a liquid crystal display element includes steps of: sealing, between a couple of substrates facing each other with electrodes formed thereon, a liquid crystal layer containing liquid crystal molecules having a negative dielectric constant anisotropy and a curing material; applying a magnetic field to the liquid crystal layer sealed between the couple of substrates, in a direction to form a predetermined angle with respect to a line normal to the substrates; and curing the curing material after applying the magnetic field.Type: ApplicationFiled: December 5, 2007Publication date: June 26, 2008Applicant: SONY CORPORATIONInventors: Kazuya Kumazawa, Tsuyoshi Kamada
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Patent number: 7391490Abstract: The invention relates to liquid crystal displays used in television receivers and display sections of electronic apparatus and, more particularly, to a liquid crystal display in which a polymeric material included in a liquid crystal material is polymerized to impart a pre-tilt angle to the liquid crystal material. The invention provides a liquid crystal display in which gradation/luminance characteristics in an oblique direction are improved and in which reduction in luminance is suppressed. The liquid crystal display includes a TFT substrate and an opposite substrate provided opposite to each other and a liquid crystal composition including a liquid crystal material and a polymer sealed between the substrates.Type: GrantFiled: January 17, 2006Date of Patent: June 24, 2008Assignee: Sharp Kabushiki KaishaInventors: Yohei Nakanishi, Tsuyoshi Kamada, Kazuya Ueda, Hideaki Tsuda
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Publication number: 20080129948Abstract: Disclosed is a method for preparation of a liquid crystal film having uniaxial alignment, comprising steps of: elevating temperature of a substrate coated with a nanostructure formed of liquid crystal molecules to a value sufficient to alter the nanostructure into a liquid phase; and decreasing the temperature to another value sufficient to again alter the liquid phase into a liquid crystal phase in the presence of a magnetic field to horizontally align the nanostructure of liquid crystal molecules.Type: ApplicationFiled: October 29, 2007Publication date: June 5, 2008Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Sung-Min Choi, Hyo-Sik Kim
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Publication number: 20080123046Abstract: An optical alignment method which develops a pretilt angle by batch plane exposure without tilting a substrate. This optical alignment method provides liquid crystal aligning capability to the surface of a polymer film by exposing the surface of the polymer film through a slit exposure mask while the surface of the polymer film and the slit exposure mask are moved relative to each other substantially at a fixed rate. Alternatively, liquid crystal aligning capability is provided to the surface of the polymer film by exposing the surface of the polymer film through an optical exposure pattern while the optical exposure pattern having a plurality of lines with a certain width at certain intervals is formed on the surface of the polymer film continuously.Type: ApplicationFiled: November 8, 2007Publication date: May 29, 2008Applicants: JSR CORPORATION, NATL. INST. OF ADV. INDUSTRIAL SCI. & TECH.Inventors: Masayuki Kimura, Hiroshi Yokoyama
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Publication number: 20080079877Abstract: The invention provides: an optical element that includes a birefringence functional layer constituted of a polymerizable liquid crystal material, in which the birefringence functional layer is formed directly or indirectly on a substrate, and in a post-process carried out thereafter, alignment and characteristics of the birefringence functional layer are not disturbed, with the result that a high quality birefringence control function can be exerted; a liquid crystal display device provided with the optical element; a method of evaluating a birefringence functional layer that is not disturbed in the alignment and physical properties by the post-process; and a method of producing the optical element.Type: ApplicationFiled: September 24, 2007Publication date: April 3, 2008Applicant: DAI NIPPON PRINTING CO., LTD.Inventor: Yuji Nakatsugawa
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Publication number: 20080049184Abstract: Cartesian polarizers utilizing liquid crystal polymers (LCPs) are provided for use as laser protection filters in optical pick-up units. The LCPs are photo-aligned and cross-linked into a polymer host to provide a durable filter. According to one embodiment, the LCP molecules exhibit a cholesteric phase and are coupled to one or more quarter-wave retarders. According to another embodiment, the LCP molecules are used to form a multi-layer stack using the GBO effect.Type: ApplicationFiled: August 22, 2007Publication date: February 28, 2008Applicant: JDS Uniphase Corporation, State of Incoporation: DelawareInventors: Kim Leong Tan, Karen Denise Hendrix
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Patent number: 7330220Abstract: An MVA liquid crystal display which is high in brightness and has preferable characteristics is provided. Further, the MVA liquid crystal display with a preferable display quality as well as a larger margin in fabrication and a higher yield is provided. A first substrate having a first electrode, a second substrate having a second electrode corresponding to a display pixel, the liquid crystal having negative dielectric anisotropy sealed between the first and the second substrates, and a structure which is provided at least the second substrate to control an alignment of the liquid crystal are provided. Also included is a storage capacitor wiring arranged under the structure on a side of the second substrate via an insulation film.Type: GrantFiled: December 16, 2005Date of Patent: February 12, 2008Assignee: Sharp Kabushiki KaishaInventors: Yoshinori Tanaka, Tetsuya Fujikawa, Shougo Hayashi
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Publication number: 20080030672Abstract: A liquid crystal (LC) alignment system includes an alignment film having a single or plurality of liquid crystal molecules aligned by a plurality of plasma generating devices, such that the liquid crystal molecules are aligned at a stable pretilt angle. Compared with the prior art, the present invention is suitable for modifying the alignment film surface by adjusting directions and angles of the liquid crystal molecules, and can attain the effect of alignment stability with a pretilt angle in a single process, thus overcoming the drawbacks of the prior art.Type: ApplicationFiled: August 3, 2007Publication date: February 7, 2008Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chin-Yang Lee, Huang-Chin Tang, Ying-Fang Chang, Chen-Der Tsai, Wen-Tzong Hsieh
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Publication number: 20080030673Abstract: A method for fabricating liquid crystal (LC) alignment includes the steps of processing an alignment film having a plurality of liquid crystal molecules with a single or plurality of plasma generating devices, such that the liquid crystal molecules are aligned at a high pretilt angle. Compared with the prior art, the present invention is suitable for modifying the alignment film surface adjustablely in directions and angles, and can attain the effect of alignment stability with a high pretilt angle in a single process, thus overcoming the drawbacks of the prior art.Type: ApplicationFiled: August 3, 2007Publication date: February 7, 2008Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chin-Yang Lee, Huang-Chin Tang, Kei-Hsiung Yang, Chih-Wei Chen, Chi-Hung Liu, Yu-Jung Shih
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Patent number: 7304712Abstract: The present invention relates to a liquid crystal display device that is used in display portions of electronics devices and a manufacturing method thereof, and intends to provide a liquid crystal display device that can obtain excellent display quality and a manufacturing method thereof. The method of manufacturing a liquid crystal display device includes preparing a pair of substrates that have a structure P1 having a height Hp1 and a structure P2 having a height Hp2, the heights Hp1 and Hp2 satisfying a relationship of 0.3 (?m)?Hp1?Hp2?1.0 (?m); controlling a dropping amount V of liquid crystal so that a cell gap G1 that is determined by the dropping amount V of liquid crystal, the height Hp1 and the height Hp2 satisfy a relationship of Hp2<G1<Hp1; dropping the controlled dropping amount V of liquid crystal on one of the pair of substrates; and attaching the pair of substrates in a vacuum followed by returning to an atmospheric pressure to fill in the liquid crystal between the pair of substrates.Type: GrantFiled: June 21, 2004Date of Patent: December 4, 2007Assignees: Fujitsu Limited, Au Optronics CorporationInventors: Manabu Sawasaki, Yoji Taniguchi, Takashi Takagi
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Patent number: 7259825Abstract: An MVA liquid crystal display which is high in brightness and has preferable characteristics is provided. Further, the MVA liquid crystal display with a preferable display quality as well as a larger margin in fabrication and a higher yield is provided. A first substrate having a first electrode, a second substrate having a second electrode corresponding to a display pixel, the liquid crystal having negative dielectric anisotropy sealed between the first and the second substrates, and a structure which is provided on each of the first and the second substrate to control an alignment of the liquid crystal are provided. The structure in the first substrate has a linear protrusion structure and provides at least two auxiliary protrusion structures opposing to each end portion facing to the second electrode extending from a protrusion structure provided and the width between the two auxiliary protrusions and the opposing second electrode is more than 6 ?m respectively.Type: GrantFiled: December 16, 2005Date of Patent: August 21, 2007Assignee: Sharp Kabushiki KaishaInventor: Kazuhiko Sumi
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Patent number: 7259818Abstract: A liquid crystal device comprises a nematic liquid crystal, voltage means for applying a voltage across said liquid crystal, and two substrates (42, 30) each provided with an alignment layer (32, 33), wherein: said liquid crystal is sandwiched between said two substrates (42, 30); said nematic liquid crystal can be placed in at least one operating state and at least one non-operating state, and at least one of said alignment layers (32, 33) is provided with a plurality of surface protrusions (40) formed from an anisotropic material.Type: GrantFiled: March 1, 2002Date of Patent: August 21, 2007Assignee: Sharp Kabushiki KaishaInventors: Michael John Towler, Elizabeth Jane Acosta
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Patent number: 7255147Abstract: A bonding device for fabricating a liquid crystal display includes a vacuum chamber, an upper stage and a lower stage within the vacuum chamber, a stage moving system moving at least one of the upper and lower stages, a plurality of first observation holes formed through regions of the upper stage, a plurality of second observation holes formed through an upper portion of the vacuum chamber, each aligned to one of the plurality of first observation holes, and a plurality of alignment cameras, each camera aligned with the each of the first and second observation holes.Type: GrantFiled: September 30, 2002Date of Patent: August 14, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Sang Seok Lee, Sang Ho Park
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Patent number: 7253871Abstract: An efficient technique for producing deterministically polarized single photons uses liquid-crystal hosts of either monomeric or oligomeric/polymeric form to preferentially align the single emitters for maximum excitation efficiency. Deterministic molecular alignment also provides deterministically polarized output photons; using planar-aligned cholesteric liquid crystal hosts as 1-D photonic-band-gap microcavities tunable to the emitter fluorescence band to increase source efficiency, using liquid crystal technology to prevent emitter bleaching. Emitters comprise soluble dyes, inorganic nanocrystals or trivalent rare-earth chelates.Type: GrantFiled: January 9, 2004Date of Patent: August 7, 2007Assignee: University of RochesterInventors: Svetlana G. Lukishova, Robert W. Boyd, Carlos R. Stroud
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Patent number: 7253872Abstract: A liquid crystal display apparatus includes a first substrate; a second substrate provided so as to face the first substrate; a vertical alignment type liquid crystal layer provided between the first substrate and the second substrate; a plurality of pixel areas each including a first electrode provided on the first substrate, a second electrode provided on the second substrate, and the liquid crystal layer provided between the first electrode and the second electrode; and a wall structure regularly arranged on a surface of the first electrode closer to the liquid crystal layer. The liquid crystal layer, when being provided with at least a prescribed voltage, forms at least one liquid crystal domain exhibiting a radially inclined orientation in an area substantially surrounded by the wall structure.Type: GrantFiled: September 29, 2004Date of Patent: August 7, 2007Assignee: Sharp Kabushiki KaishaInventors: Yasuhiro Kume, Nobukazu Nagae, Kazuhiko Tamai, Noriaki Onishi, Takaaki Okamoto
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Patent number: 7239366Abstract: A slit pattern, which is an orientation control element extending in an oblique direction relative to an edge of a pixel electrode on a surface of a TFT substrate, is formed in the pixel electrode to extend in a substantially parallel direction to an extending direction of a bank-shaped pattern. Furthermore, as an orientation control element, fine slit patterns (concave portions in the pixel electrode) are formed locally in a part near the edge of the pixel electrode except in the pixel electrode to extend in an oblique direction relative to an extending direction of the edge.Type: GrantFiled: September 18, 2003Date of Patent: July 3, 2007Assignee: Sharp Kabushiki KaishaInventors: Arihiro Takeda, Shingo Kataoka, Tsuyoshi Kamada, Kazuya Ueda
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Patent number: 7218303Abstract: A method of aligning a ferroelectric liquid crystal (FLC) material capable of facilitating the restoration of an initial alignment of FLC material as a result of mounting of driving circuits includes simultaneously applying a first voltage to a Vcom terminal formed on a source printed circuit board and applying a second voltage to a GND terminal also formed on the source printed circuit board while the first voltage is also applied to a Vcom terminal formed on a gate printed circuit board and while the second voltage is also applied to a GND terminal formed on the gate printed circuit board.Type: GrantFiled: June 30, 2003Date of Patent: May 15, 2007Assignee: LG.Philips LCD Co., Ltd.Inventor: Hong Chul Kim
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Patent number: 7215397Abstract: The liquid crystal display device of the present invention includes a pair of substrates, a liquid crystal layer placed between the pair of substrates and an alignment film placed on the side of at least one of the pair of substrates facing the liquid crystal layer. The liquid crystal layer has a first region in which the pretilt direction of liquid crystal molecules of which the alignment is regulated with alignment regulating force of a surface of the alignment film is a first direction and a second region in which the pretilt direction is a second direction different from the first direction. Display is performed using bend alignment of the first region of the liquid crystal layer.Type: GrantFiled: October 4, 2002Date of Patent: May 8, 2007Assignees: Sharp Kabushiki KaishaInventors: Iichiro Inoue, Tatsuo Uchida
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Patent number: 7199856Abstract: An MVA liquid crystal display which is high in brightness and has preferable characteristics is provided. Further, the MVA liquid crystal display with a preferable display quality as well as a larger margin in fabrication and a higher yield is provided. A first substrate having a first electrode, a second substrate having a second electrode corresponding to a display pixel, the liquid crystal having negative dielectric anisotropy sealed between the first and the second substrates, and a structure which is provided on each of the first and the second substrate to control an alignment of the liquid crystal are provided. The structure in the first substrate has a linear protrusion structure and provides at least two auxiliary protrusion structures opposing to each end portion facing to the second electrode extending from a protrusion structure provided and the width between the two auxiliary protrusions and the opposing second electrode is more than 6 ?m respectively.Type: GrantFiled: December 2, 2003Date of Patent: April 3, 2007Assignee: Sharp Kabushiki KaishaInventors: Hiroyasu Inoue, Yoji Taniguchi, Takahiro Sasaki, Kenji Okamoto
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Patent number: 7180569Abstract: A slit pattern, which is an orientation control element extending in an oblique direction relative to an edge of a pixel electrode on a surface of a TFT substrate, is formed in the pixel electrode to extend in a substantially parallel direction to an extending direction of a bank-shaped pattern. Furthermore, as an orientation control element, fine slit patterns (concave portions in the pixel electrode) are formed locally in a part near the edge of the pixel electrode except in the pixel electrode to extend in an oblique direction relative to an extending direction of the edge.Type: GrantFiled: September 18, 2003Date of Patent: February 20, 2007Assignee: Sharp Kabushiki KaishaInventor: Takahiro Sasaki
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Patent number: 7161652Abstract: The present invention provides a manufacturing method of a liquid crystal display device capable of achieving uniform alignment of monostable ferroelectric liquid crystal having spontaneous polarization, and provides the liquid crystal display device. The liquid crystal (monostable ferroelectric liquid crystal having spontaneous polarization) showing a phase sequence, either isotropic liquid phase-cholesteric phase-chiral smectic C phase, isotropic liquid phase-chiral nematic phase-chiral smectic C phase, or isotropic liquid phase-cholesteric phase-smectic A phase-chiral smectic C phase, from a high temperature side to a low temperature side, is sandwiched between two glass substrates having transparent electrodes and alignment films whose pretilt angle is not more than 2° and rubbing directions are parallel.Type: GrantFiled: July 29, 2003Date of Patent: January 9, 2007Assignee: Fujitsu LimitedInventors: Toshiaki Yoshihara, Hironori Shiroto, Shinji Tadaki, Tetsuya Makino, Yoshinori Kiyota, Shigeo Kasahara, Keiichi Betsui
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Patent number: 7145619Abstract: It is an object of the invention to provide a substrate for a liquid crystal display, a liquid crystal display having the same, and a method of manufacturing the same which make it possible to provide a display having high luminance and preferable display characteristics to be used in display sections of information apparatuses and the like. Each pixel is defined by gate bus lines extending in the horizontal direction and drain bus lines extending in the vertical direction. TFTs are formed in the vicinity of intersections between the bus lines, and resin overlap sections for shielding the TFTs from light are formed above the same. No black matrix is formed on a common electrode substrate which is provided in a face-to-face relationship with a TFT substrate, and the bus lines and the resin overlap sections formed on the TFT substrate function as a black matrix.Type: GrantFiled: June 10, 2002Date of Patent: December 5, 2006Assignee: Sharp Kabushiki KaishaInventors: Manabu Sawasaki, Naoto Kondo, Tetsuya Fujikawa, Takashi Takagi, Tomonori Tanose, Tomoshige Oda, Akira Komorita, Katsunori Misaki, Shiro Hirota
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Patent number: 7145624Abstract: The liquid crystal display device of this invention includes a plurality of picture element regions each defined by a first electrode provided on a face of a first substrate facing a liquid crystal layer and a second electrode provided on a second substrate so as to oppose the first electrode via the liquid crystal layer sandwiched therebetween. In each of the picture element regions, the first electrode has a plurality of openings and a solid portion, the liquid crystal layer is in a vertical orientation state when no voltage is applied between the first electrode and the second electrode, and when a voltage is applied between the first electrode and the second electrode, a plurality of liquid crystal domains each in a radially-inclined orientation state are respectively formed in the plurality of openings and the solid portion by inclined electrode fields generated at respective edge portions of the openings of the first electrode.Type: GrantFiled: May 6, 2004Date of Patent: December 5, 2006Assignee: Sharp Kabushiki KaishaInventors: Masumi Kubo, Akihiro Yamamoto, Takashi Ochi, Tetsuhiro Yamaguchi, Naoshi Yamada, Katsuhiko Morishita, Kiyoshi Ogishima, Kazuhiro Maekawa
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Patent number: 7136140Abstract: An MVA liquid crystal display which is high in brightness and has preferable characteristics is provided. Further, the MVA liquid crystal display with a preferable display quality as well as a larger margin in fabrication and a higher yield is provided. A first substrate having a first electrode, a second substrate having a second electrode corresponding to a display pixel, the liquid crystal having negative dielectric anisotropy sealed between the first and the second substrates, and a structure which is provided on each of the first and the second substrate to control an alignment of the liquid crystal are provided. The structure in the first substrate has a linear protrusion structure and provides at least two auxiliary protrusion structures opposing to each end portion facing to the second electrode extending from a protrusion structure provided and the width between the two auxiliary protrusions and the opposing second electrode is more than 6 ?m respectively.Type: GrantFiled: July 7, 2000Date of Patent: November 14, 2006Assignee: Sharp Kabushiki KaishaInventors: Hiroyasu Inoue, Yoji Taniguchi, Yoshinori Tanaka, Takahiro Sasaki, Kenji Okamoto, Minoru Otani, Manabu Sawasaki, Tetsuya Fujikawa, Shougo Hayashi, Kazuhiko Sumi, Tomonori Tanose