Formed Of A Liquid Crystal Material Patents (Class 349/127)
  • Patent number: 8455062
    Abstract: To provide a liquid crystal display panel that has high contrast and reduced display deficiency, a liquid crystal display panel of the present invention includes: a pair of substrates (1) and (2) facing each other; and a liquid crystal layer (3) sandwiched between the pair of substrates (1) and (2), the pair of substrates (1) and (2) being provided with a pair of respective alignment films (4) and (5) formed thereon and facing each other, the pair of alignment films (4) and (5) being provided with respective polymer films (6) and (7) formed thereon and each made of a monomer in the liquid crystal layer (3), the pair of alignment films (4) and (5) containing a macromolecular compound having a side chain containing a fluorine atom, the liquid crystal layer (3) containing a polymerizable monomer represented by at least one of General Formulae (1) through (3), the polymer films (6) and (7) each being made of the polymerizable monomer represented by at least one of General Formulae (1) through (3), the polymer fil
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: June 4, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takako Nakai, Masanobu Mizusaki, Youhei Nakanishi
  • Patent number: 8441605
    Abstract: The present invention provides a polarizing plate including: a layer of polarizer for polarizing incident light and emitting the polarized light; and a coating type optically anisotropic layer disposed on the side to which the polarized light is emitted from the polarizer layer.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: May 14, 2013
    Assignee: Japan Display West Inc.
    Inventor: Eiji Sakai
  • Patent number: 8435609
    Abstract: The present invention provides a liquid crystal alignment agent and a liquid crystal alignment film formed therefrom, as well as a liquid crystal display element provided with the liquid crystal alignment film. More specifically, the present invention provides a liquid crystal alignment agent and liquid crystal alignment film formed therefrom, as well as a liquid crystal display element provided with the liquid crystal alignment film without image sticking problems and having superior voltage holding ratio. The liquid crystal alignment agent includes: a polymer (A) obtained from a reaction between tetracarboxylic dianhydride compound and diamine compounds, an epoxy compound (B), and an organic solvent (C). Wherein the liquid crystal alignment agent is coated on a glass substrate, and heated for 15 minutes at 220° C. to forth a hard coating film. The hard coating film is extracted for 72 hours by using acetone at 60° C.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: May 7, 2013
    Assignee: Chi Mei Corporation
    Inventor: Huai-Pin Hsueh
  • Publication number: 20130083278
    Abstract: The present invention provides a liquid crystal display device in which a good alignment state can be obtained, and the occurrence of AC image sticking can be suppressed. The present invention is a liquid crystal display device including a liquid crystal layer including liquid crystal molecules and being interposed between a pair of substrates, and an alignment layer provided on a side of the liquid crystal layer in at least one of the substrates, wherein the alignment layer includes a liquid crystal alignment polymer having a property of controlling and aligning the liquid crystal molecules, and the surface side chain density in the alignment layer is not less than 2.0.
    Type: Application
    Filed: June 3, 2011
    Publication date: April 4, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yuko Teraoka, Shinichi Terashita, Isamu Miyake, Kouichi Matsuhashi, Koichi Miyachi, Yoshinobu Nakamura, Takafumi Hayama, Yuhji Yashiro
  • Patent number: 8404318
    Abstract: The present invention comprises a device and method for ordering molecules of lyotropic chromonic liquid crystals to aligned structure of a dried film. An example of an aligned film may be transparent to visible light but not transparent to polarized light in the ultraviolet and/or infrared portions of the electromagnetic spectrum. A shearing device having a shearing tool and a repelling pad may repel the solvent and provide a shear force to shear the LCLC dissolved in the solvent as a film on the surface of a substrate. A method of making an aligned lyotropic chromonic liquid crystal-based film comprises providing a mixture of a lyotropic chromonic liquid crystal material in a solvent for the liquid crystal material, applying the mixture to a substrate, shearing the lyotropic chromonic liquid crystal with a shearing device and removing the solvent to produce an aligned lyotropic chromonic liquid crystal-based film.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: March 26, 2013
    Assignee: Kent State University
    Inventors: Andrii B. Golovin, Oleg Lavrentovich
  • Patent number: 8373840
    Abstract: A liquid crystal display module includes an observation region to allow a visual inspection be performed after bonding of the substrates for inspecting the sealant that may be otherwise blocked by the common voltage line. An embodiment of a liquid crystal display device includes a first electrode on a first substrate, a second electrode and a third electrode on a second substrate, the second electrode electrically contacting the first electrode at a first portion and the third electrode at a second portion, and including a transparent conductive material, a sealant attaching the first and second substrates together in a sealant region, the sealant between the first and second electrodes and the sealant including a plurality of conductive balls for electrically connecting the first and second electrodes, and a liquid crystal layer between the attached first and second substrates and within the sealant.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: February 12, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Duk-Young Jeong
  • Patent number: 8363180
    Abstract: A liquid crystal display device performs suitable overshoot drive, even if a panel temperature is changed due to a change of the backlight emission luminance. The liquid crystal display device includes: a temperature sensor which detects the temperature in the device; an emphasis conversion section, which obtains, after the elapse of one vertical display period, an emphasis conversion parameter for making the transmissivity of the liquid crystal panel reach the transmissivity specified by input image signals, and which outputs applying voltage signals for the liquid crystal panel on the basis of the emphasis conversion parameter; and a main microcomputer which corrects the panel temperature of the liquid crystal panel on the basis of the changed light emission luminance when the light emission luminance of the backlight is changed. The emphasis conversion section variably controls the emphasis conversion parameter on the basis of the panel temperature corrected via the main microcomputer.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: January 29, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshitaka Matsui, Yoshiyuki Kawagoe
  • Publication number: 20130021568
    Abstract: The present invention discloses a reactive monomer of liquid crystal. The reactive monomer of liquid crystal is added with at least one fluoro group. Because hydrocarbon bonds of a side chain of polyimide surface of an alignment film has a fluorophobic effect, the fluoro group of the reactive monomer of liquid crystal can lower the interaction between the polyimide surface of the alignment film and the reactive monomer of liquid crystal to thus evenly deposit the liquid crystal composition containing the reactive monomers of liquid crystal onto the polyimide surface of the alignment film. Thus, it can avoid from occurring the phenomenon of drop Mura defect occurred during implementing the ODF technology.
    Type: Application
    Filed: August 11, 2011
    Publication date: January 24, 2013
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Chung-Ching Hsieh, Chengming He
  • Patent number: 8349413
    Abstract: A liquid crystal display panel including a first substrate, a second substrate, a liquid crystal layer, and a polymer stabilized alignment layer is provided. The second substrate is disposed opposite to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The polymer stabilized alignment layer is disposed between the first substrate and the liquid crystal layer, and an average surface roughness of the polymer stabilized alignment layer is greater than or equal to 10 nm.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: January 8, 2013
    Assignee: Au Optronics Corporation
    Inventors: Cheng-Jung Chiang, Chih-Ho Chiu, Chung-Ching Hsieh, Chia-Hsuan Pai, Bo-Hsin Huang, Te-Sheng Chen
  • Publication number: 20120320323
    Abstract: In a liquid crystal display, a pretilt value provided by an upper alignment layer or a lower alignment layer is gradually changed in one domain, such that liquid crystal molecules have various arrangements in which azimuth angles of aligned liquid crystal molecules are gradually changed.
    Type: Application
    Filed: October 20, 2011
    Publication date: December 20, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyoung Tae KIM, Kyoung Ju SHIN, Jun Woo LEE, Suk Hoon KANG, Baek Kyun JEON, Young-Gu KIM
  • Patent number: 8323755
    Abstract: Nematic liquid crystal cells with positive dielectric anisotropy that include colloidal suspensions having nanoclusters (e.g., CdTe nanoclusters, CdSe nanoclusters) that include a pure monolayer of ligands are provided as well as methods of inducing Freedericksz transitions in the nematic liquid crystal cells and methods of controlling the alignment of a liquid crystal.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: December 4, 2012
    Assignee: University of Manitoba
    Inventors: Torsten Hegmann, Brandy Melissa Kinkead
  • Patent number: 8325304
    Abstract: A first substrate and a second substrate are provided. An alignment process is performed on a surface of the first substrate and a surface of the second substrate respectively. A liquid crystal mixture is prepared, where the liquid crystal mixture includes a liquid crystal molecule and a liquid crystal monomer having a functional group of diacrylates, and the liquid crystal monomer having the functional group of diacrylates occupies 0.01-2 wt % of the liquid crystal mixture. The first substrate and the second substrate are assembled, and the liquid crystal mixture is filled therebetween. A polymerization curing process is performed such that the liquid crystal monomer having the functional group of diacrylates is polymerized to respectively form a liquid crystal polymer film on the aligned surfaces of the first and second substrates. The method enhances anchoring energy and reduces problems of V-T shift, surface gliding, and residual image.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: December 4, 2012
    Assignees: Taiwan TFT LCD Association, Chunghwa Picture Tubes, Ltd., AU Optronics Corporation, Hannstar Display Corporation, Chi Mei Optoelectronics Corporation, Industrial Technology Research Institute
    Inventors: Cho-Ying Lin, Ding-Jen Chen, Hui-Min Lin, Yang-Ching Lin
  • Publication number: 20120287390
    Abstract: Disclosed is a liquid crystal alignment agent that includes a polymer comprising polyamic acid including a structural unit represented by the following Chemical Formula 1, polyimide including a structural unit represented by the following Chemical Formula 2, or a combination thereof. In Chemical Formulas 1 and 2, each X1, X2, Y1 and Y2 is the same as in the detailed description.
    Type: Application
    Filed: January 19, 2012
    Publication date: November 15, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Eun-Ha KIM, Jae-Deuk YANG, Yong-Sik YOO, Myoung-Youp SHIN, Guk-Pyo JO
  • Patent number: 8310632
    Abstract: An adhesion promoter for enhancing the bond between adjacent layers of a multilayer structure to prevent delamination thereof is disclosed. The adhesion promoter comprises an aromatic polyimide-based UV-cured acrylate. Also disclosed are laminated structures including liquid crystal displays and bonded missile domes that utilize an adhesion promoter of the invention, and methods for fabricating such structures.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: November 13, 2012
    Assignee: Teledyne Scientific & Imaging, LLC
    Inventor: Young J. Chung
  • Patent number: 8305531
    Abstract: A black matrix is disposed on a surface of a first base substrate having a switching element, a color filter is disposed on the switching element in a pixel area, a pixel electrode is disposed on the first base substrate having the color filter, and a first alignment layer is disposed on the pixel electrode to form a first substrate. A common electrode layer is disposed on a second base substrate, and a second alignment layer is disposed on the common electrode layer to form a second substrate. A liquid crystal composition including a reactive mesogen (RM) is interposed between opposing surfaces of the first and second substrates. The RM is cured to form a mesogen cured product on the first and second alignment layers. Accordingly, an RM having a planar structure increases curing speed, reduces, manufacturing time, and improves quality of the LCD panel.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: November 6, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Gi Seong, Jae-Jin Lyu, Seung-Beom Park, Keun-Chan Oh
  • Patent number: 8259259
    Abstract: An optically anisotropic film comprising at least one species of liquid crystal compound which exhibits a nematic phase or a smectic phase, the liquid crystal phase showing birefringence ?n(?) at wavelength ? which satisfies the numerical expression (1) below is disclosed.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: September 4, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Mitsuyoshi Ichihashi, Shinichi Morishima, Hiroshi Takeuchi
  • Patent number: 8243233
    Abstract: A liquid crystal device comprising: a pair of substrates having an electrode arrangement thereon; an orientation control means provided on at least one of said substrates; and a ferroelectric or antiferroelectric liquid crystal layer interposed between said substrates, said liquid crystal layer being uniaxially oriented by virtue of said orientation control means, wherein means for suppressing an orientation control effect of said orientation control means with respect to said liquid crystal layer is provided between said liquid crystal layer and said orientation control means.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: August 14, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Toshimitsu Konuma, Takeshi Nishi, Michio Shimizu, Harumi Mori, Kouji Moriya, Satoshi Murakami
  • Patent number: 8218114
    Abstract: The invention relates to a vertical alignment type liquid crystal display and a method of manufacturing the same and provides a liquid crystal display and a method of manufacturing the same which allow a reduction of manufacturing cost. A configuration is employed, which includes a pair of substrates provided opposite to each other, a liquid crystal sealed between the substrates, and a photo-curing material for controlling the alignment of the liquid crystal, the photo-curing material being formed in the vicinity of an interface between the liquid crystal and the pair of substrates as a result of polymerization of a polymerizable component mixed in the liquid crystal, the reaction being promoted by a photo-initiator including no chlorine atom.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: July 10, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Shingo Kataoka
  • Publication number: 20120162590
    Abstract: A liquid crystal display device includes a first substrate, a first electrode on the first substrate, a second substrate opposed to the first substrate, and a second electrode on the second substrate. The second electrode corresponds to the first electrode. The liquid crystal display device also includes a liquid crystal structure between the first electrode and the second electrode. The liquid crystal structure includes a plurality of liquid crystal molecules and at least one movement control member. The movement control member in the liquid crystal structure restricts a movement of the liquid crystal molecules.
    Type: Application
    Filed: June 21, 2011
    Publication date: June 28, 2012
    Inventors: Gee-Bum Kim, Jae-Hyun Kim, Won-Sang Park, Jae-Ik Lim, Yong-Seok Yeo, Jong-In Baek
  • Patent number: 8203677
    Abstract: The present invention provides a polarizing plate including: a layer of polarizer for polarizing incident light and emitting the polarized light; and a coating type optically anisotropic layer disposed on the side to which the polarized light is emitted from the polarizer layer.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: June 19, 2012
    Assignee: Sony Corporation
    Inventor: Eiji Sakai
  • Publication number: 20120127408
    Abstract: In an MVA liquid crystal display device of the present invention, each pixel includes at least one electrode (21), the first electrode (21) has a first corner portion with a first edge parallel to a row direction and a second edge parallel to a column direction, and a first substrate further includes an electrode layer (e.g., a storage capacitor counter electrode (18a)) which overlaps at least part of the first edge and at least part of the second edge of the first corner portion. According to the present invention, it is possible to provide an MVA liquid crystal display device capable of suppressing the degradation in display quality caused by the disturbance in alignment of liquid crystal molecules in the vicinity of the edge of the first electrode.
    Type: Application
    Filed: August 6, 2010
    Publication date: May 24, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Ryohki Itoh, Masahiro Yoshida, Takaharu Yamada, Yuhko Hisada, Satoshi Horiuchi
  • Publication number: 20120105783
    Abstract: Linear photo-oriented polymer (LPP) layers are situated to align liquid crystals in a liquid crystal polymer (LCP) layer situated at or on the LPP layers. The LCP layer can include a guest such as a fluorophore that aligns with the liquid crystal so as to emit polarized fluorescence in response to an excitation beam. Layer LPP/LCP structures can be provided as light emitters, patterned polarizers, patterned retarders and other devices based on selection of one or more guest materials included in the LCP and alignable with the liquid crystal.
    Type: Application
    Filed: November 2, 2011
    Publication date: May 3, 2012
    Inventors: Stanley Pau, Arshad S. Sayyad, Graham B. Myhre
  • Patent number: 8149363
    Abstract: A VA-mode liquid crystal display device which includes a pair of alignment sustaining layers 34a and 34b formed by a photopolymerized material on surfaces of a pair of vertical alignment films 32a and 32b which are closer to a liquid crystal layer, and a cruciform opening 22a provided only in a counter electrode. When a predetermined voltage is applied across the liquid crystal layer, four liquid crystal domains are formed such that the azimuths of the directors of the respective liquid crystal domains are different from one another and form an angle of about 45? relative to the polarization axes of a pair of polarizing plates. When no voltage is applied across the liquid crystal layer, the pretilt azimuths of liquid crystal molecules included in regions respectively corresponding to the four liquid crystal domains are regulated by the alignment sustaining layers 34a and 34b.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: April 3, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshito Hashimoto, Hiroyuki Ohgami, Masumi Kubo, Masayuki Soga
  • Patent number: 8139189
    Abstract: A main object of the present invention is to provide a liquid crystal display, using a ferroelectric liquid crystal exhibiting mono-stability, which makes it possible to control the direction of the spontaneous polarization of the ferroelectric liquid crystal. The liquid crystal display is produced by holding a ferroelectric liquid crystal between: an oblique vapor deposition-alignment layer of a first alignment treatment substrate, in which a first electrode layer and the oblique vapor deposition-alignment layer are formed in this order on a first substrate; and a fixed liquid crystal layer of a second alignment treatment substrate, in which a second electrode layer, an alignment layer for reactive liquid crystal and the fixed liquid crystal layer are laminated in this order on the second substrate.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: March 20, 2012
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Naoko Sawatari, Masato Okabe
  • Publication number: 20120013837
    Abstract: The present invention provides: a composition for forming a liquid crystal alignment film capable of forming a liquid crystal alignment film excellent in evenness; and a liquid crystal display device. The present invention provides a composition for forming a liquid crystal alignment film, wherein the composition comprises: a material for forming a liquid crystal alignment film; 4,6-dimethyl-2-heptanone; diisobutyl ketone; and at least one of ?-butyrolactone and N-methyl-2-pyrrolidone as solvents.
    Type: Application
    Filed: September 4, 2009
    Publication date: January 19, 2012
    Inventors: Shinichi Terashita, Hiroyuki Hakoi, Ryou Ueda, Koichi Miyachi, Michinori Nishikawa, Eiji Hayashi, Shouichi Nakata, Takahiro Matsumoto, Satoshi Fukuma, Jyun Isayama, Shigeo Shimizu
  • Patent number: 8094276
    Abstract: To provide a production method of a liquid crystal display device and a liquid crystal display device, in which generation of a joint line on a display screen is suppressed and yield can be improved even if a substrate is subjected to an alignment treatment by completing exposure for the substrate through several exposures in a liquid crystal display device including pixels each having two or more domains.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: January 10, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Iichiro Inoue, Hiroyuki Hakoi, Shinichi Terashita, Koichi Miyachi
  • Patent number: 8064017
    Abstract: Disclosed herein is a liquid crystal display device in which a plurality of electrodes is provided on one of a plurality of substrates with a liquid crystal layer interposed therebetween and liquid crystal molecules configuring the liquid crystal layer are driven by an electric field generated between the pair of electrodes, wherein the one substrate has an alignment film which contacts the liquid crystal layer to regulate an alignment direction of the liquid crystal molecules and is provided so as to cover at least one of the pair of electrodes, and wherein the thickness of the alignment film is larger than that of at least one of the electrodes contacting the alignment film.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: November 22, 2011
    Assignee: Sony Corporation
    Inventor: Hayato Kurasawa
  • Patent number: 8054431
    Abstract: To provide a production method of a liquid crystal display device and a liquid crystal display device, in which generation of a joint line on a display screen is suppressed and yield can be improved even if a substrate is subjected to an alignment treatment by completing exposure for the substrate through several exposures in a liquid crystal display device including pixels each having two or more domains.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: November 8, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Iichiro Inoue, Hiroyuki Hakoi, Shinichi Terashita, Koichi Miyachi
  • Patent number: 8045131
    Abstract: The present invention provides a transparent liquid crystal display device which is less in display characteristics and viewing angle dependency and can provide bright images and high contrasts. The transparent liquid crystal display device comprises at least: a backlight; a polarizer; a second optical anisotropic layer with a retardation of 50 to 180 nm at a wavelength of 550 nm; a first optical anisotropic layer with a retardation of 20 to 140 nm at a wavelength of 550 nm; a homogeneously aligned liquid crystal cell comprising upper and lower substrates facing each other and a liquid crystal layer sandwiched between the upper and lower substrates; a third optical anisotropic layer with a retardation of 50 to 200 nm at a wavelength of 550 nm; and a polarizer, arranged in piles in this order from the backlight, wherein the first optical anisotropic layer comprising at least a liquid crystal film with a fixed nematic hybrid liquid crystal alignment structure.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: October 25, 2011
    Assignee: Nippon Oil Corporation
    Inventors: Tetsuya Uesaka, Satoru Ikeda
  • Patent number: 8009266
    Abstract: A process for producing a liquid crystal display having less alignment defects, which seldom causes aligning disorder at the boundary where ferroelectric liquid crystals allowed to flow are brought into contact with each other when the ferroelectric liquid crystals are coated on the substrate flow. The process includes a first alignment layer formation step and a liquid crystal coating step. The liquid crystal coating step is a step of linearly coating the ferroelectric liquid crystals on a first alignment layer of a liquid crystal side substrate in a direction substantially perpendicular or substantially parallel to the alignment treatment direction conducted in the first alignment layer formation step.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: August 30, 2011
    Assignee: DAI Nippon Printing Co., Ltd.
    Inventors: Naoko Sawatari, Masato Okabe
  • Patent number: 7955665
    Abstract: The present invention provides a photoalignment film composition containing a compound represented by general formula (1) and a compound having a hydrophilic group and a (meth)acryloyloxy group, an optically anisotropic medium using a photoalignment film comprised of the photoalignment film composition, and a method for preparing thereof: (wherein, R1 and R2 respectively and independently represent a hydrogen atom, halogen atom, carboxyl group or alkali metal salt thereof, halogenated methyl group, halogenated methoxy group, cyano group, nitro group, —OR5, hydroxylalkyl group having 1 to 4 carbon atoms, —CONR6R7 or methoxycarbonyl group, and R3 and R4 respectively and independently represent a carboxyl group or alkali metal salt thereof, sulfo group or alkali metal salt thereof, nitro group, amino group, carbamoyl group, alkoxycarbonyl group, sulfamoyl group or hydroxyl group).
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: June 7, 2011
    Assignee: DIC Corporation
    Inventors: Isa Nishiyama, Yasuhiro Kuwana, Joji Kawamura, Kazuaki Hatsusaka
  • Patent number: 7948590
    Abstract: A retardation substrate is provided, which includes a substrate and an optically anisotropic solidified liquid crystal layer which is supported by the substrate and formed as a continuous film made from a same material. The solidified liquid crystal layer comprises first to third regions each having two sub-regions which are a sub-region A and a sub-region B, an in-plane birefringence of the 1A sub-region is larger than that of the 2A sub-region, the in-plane birefringence of the 3A sub-region is smaller than that of the 2A sub-region, and an in-plane birefringence of the 1B sub-region is the same as that of the 3B sub-region, smaller than that of the 1A sub-region and larger than that of the 3A sub-region.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: May 24, 2011
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Sosuke Akao, Kazuhiro Osato, Hironobu Suda, Yuji Kubo, Godai Fukunaga, Yuki Yasu, Takao Taguchi
  • Patent number: 7948580
    Abstract: A liquid crystal display includes a backlight (3), a liquid crystal display panel (1), and a viewing angle control panel (2) for controlling the viewing angle of the display panel (1), the liquid crystal display further including a lens sheet (41) provided between the backlight (3) and the liquid crystal display panel (1). This provides a display device system which is capable of providing better blocking.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: May 24, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takehiko Sakai, Tsuyoshi Okazaki, Katsuhiko Morishita, Yoshiharu Kataoka, Chikanori Tsukamura, Dai Chiba
  • Patent number: 7944529
    Abstract: A transflective liquid crystal display device with improved display quality in which the liquid initial alignment direction of the liquid crystal layer is in a direction perpendicular to the extending direction of a clearance between the counter electrode of a transmission portion and a counter electrode of a reflection portion or in a direction within a range of ±2° in the clockwise direction perpendicular to the extending direction of the clearance in a case where the liquid crystal layer comprises positive type liquid crystals, or the liquid crystal initial alignment direction of the liquid crystal layer is in a direction parallel with the extending direction of a clearance, or a direction within a range of ±2° in the clockwise direction relative to the extending direction of the clearance in a case where the liquid crystal layer comprises negative type liquid crystals.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: May 17, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Takahiro Ochiai, Toshio Miyazawa, Masahiro Maki, Tohru Sasaki, Masateru Morimoto
  • Publication number: 20110069267
    Abstract: Disclosed are a display apparatus and a method of manufacturing the same. The liquid crystal display includes a first substrate and a pixel electrode formed on the first substrate and having a plurality of branches. A plurality of alignment sections are interposed among the branches. An auxiliary liquid crystal layer having discotic liquid crystals is formed on the pixel electrode and the alignment sections. A main liquid crystal layer having a vertical alignment mode is formed on the auxiliary liquid crystal layer. A common electrode is formed on the main liquid crystal layer to apply an electric field to the main liquid crystal layer together with the pixel electrode. A second substrate is formed on the common electrode.
    Type: Application
    Filed: March 24, 2010
    Publication date: March 24, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hyun-cheol MOON, Jooseok Yeom
  • Patent number: 7911562
    Abstract: To provide a liquid crystal display, in which substrates are strongly fixed with an even cell gap to exhibit an excellent display quality. The liquid crystal display includes a spacer side substrate and a counter substrate in which the spacer side substrate and the counter substrate oppose a first alignment layer and a second alignment layer to each other; and in which a liquid crystal layer having a liquid crystal material are held between the spacer side substrate and the counter substrate. Additionally, a reactive alignment layer having a curable resin is formed on at least one of the first alignment layer and the second alignment layer, and the spacer side substrate and the counter substrate are bonded to each other with the reactive alignment layer interposed therebetween.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: March 22, 2011
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Masato Okabe, Naoko Sawatari, Makoto Ishikawa
  • Patent number: 7889299
    Abstract: A liquid crystal display device includes: a first substrate and a second substrate facing each other; a pixel electrode on an inner surface of the first substrate; a first alignment layer of a ferroelectric liquid crystal material over the pixel electrode, the first alignment layer having a first spontaneous polarization along a first direction; a common electrode on an inner surface of the second substrate; a second alignment layer of the ferroelectric liquid crystal material over the common electrode, the second alignment layer having a second spontaneous polarization along the first direction; a liquid crystal layer in between the first alignment layer and the second alignment layer, the liquid crystal layer including a nematic liquid crystal material and a dye material; and a first polarizer disposed on an outer surface of one of the first substrate and the second substrate.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: February 15, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Sang-Ho Choi, Su-Seok Choi, Hyung-Ki Hong
  • Patent number: 7889308
    Abstract: A liquid crystal display module includes an observation region to allow a visual inspection be performed after bonding of the substrates for inspecting the sealant that may be otherwise blocked by the common voltage line. An embodiment of a liquid crystal display device includes a first electrode on a first substrate, a second electrode and a third electrode on a second substrate, the second electrode electrically contacting the first electrode at a first portion and the third electrode at a second portion, and including a transparent conductive material, a sealant attaching the first and second substrates together in a sealant region, the sealant between the first and second electrodes and the sealant including a plurality of conductive balls for electrically connecting the first and second electrodes, and a liquid crystal layer between the attached first and second substrates and within the sealant.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: February 15, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Duk-Young Jeong
  • Publication number: 20110032465
    Abstract: A black matrix is disposed on a surface of a first base substrate having a switching element, a color filter is disposed on the switching element in a pixel area, a pixel electrode is disposed on the first base substrate having the color filter, and a first alignment layer is disposed on the pixel electrode to form a first substrate. A common electrode layer is disposed on a second base substrate, and a second alignment layer is disposed on the common electrode layer to form a second substrate. A liquid crystal composition including a reactive mesogen (RM) is interposed between opposing surfaces of the first and second substrates. The RM is cured to form a mesogen cured product on the first and second alignment layers. Accordingly, an RM having a planar structure increases curing speed, reduces, manufacturing time, and improves quality of the LCD panel.
    Type: Application
    Filed: April 22, 2010
    Publication date: February 10, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-Gi Seong, Jae-Jin Lyu, Seung-Beom Park, Keun-Chan Oh
  • Patent number: 7859624
    Abstract: A liquid crystal display device including a pair of substrates in a spaced relationship with one another. A pair of alignment films are provided, one alignment film being formed on each substrate such that the alignment films face one another. A liquid crystal layer; including plural liquid crystals, is inserted between the pair of alignment films, wherein the alignment films impart a given pre-tilt angle to the liquid crystals. The alignment films are composed of a material containing at least two types of polymers having a prescribed initial alignment and different alignment variation rates in response to ultraviolet ray irradiation. The pre-tilt angle being adjusted, without rubbing the alignment films, through ultraviolet exposure of the alignment films.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: December 28, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hidefumi Yoshida, Yasutoshi Tasaka, Takashi Sasabayashi, Yohei Nakanishi, Kenji Okamoto
  • Patent number: 7834964
    Abstract: A transflective liquid crystal display device with improved display quality in which the liquid initial alignment direction of the liquid crystal layer is in a direction perpendicular to the extending direction of a clearance between the counter electrode of a transmission portion and a counter electrode of a reflection portion or in a direction within a range of ±2° in the clockwise direction perpendicular to the extending direction of the clearance in a case where the liquid crystal layer comprises positive type liquid crystals, or the liquid crystal initial alignment direction of the liquid crystal layer is in a direction parallel with the extending direction of a clearance, or a direction within a range of ±2° in the clockwise direction relative to the extending direction of the clearance in a case where the liquid crystal layer comprises negative type liquid crystals.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: November 16, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventors: Takahiro Ochiai, Toshio Miyazawa, Masahiro Maki, Tohru Sasaki, Masateru Morimoto
  • Publication number: 20100252777
    Abstract: Disclosed are a dielectrically negative, liquid-crystalline medium which contains a (first) dielectrically negative component (component A), which contains one or more dielectrically negative compounds of formula I and a further (second) dielectrically negative component (component B), and the use thereof in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PS-VA, FFS or IPS effect, and displays of this type.
    Type: Application
    Filed: April 5, 2010
    Publication date: October 7, 2010
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Melanie KLASEN-MEMMER, Axel Jansen, Detlef Pauluth
  • Patent number: 7800724
    Abstract: The present invention provides a liquid crystal display (“LCD”) panel and manufacturing method thereof. The LCD panel in accordance with the present invention includes a lower substrate including a thin film transistor and a pixel electrode, an upper substrate including a common electrode facing the lower substrate, a liquid crystal layer formed between the upper and lower substrates, and an alignment layer formed of an inorganic substance containing silicon (Si), oxygen (O), and carbon (C) on the upper and lower substrates. The transmittance of light through the LCD panel is high and is practically independent of the deposition temperature of the SiOC alignment layer over a wide range of deposition temperatures. The deposition of the alignment layer can be performed over a wide range of deposition temperatures while maintaining high levels of light transmission.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: September 21, 2010
    Assignees: Samsung Electronics Co., Ltd., Pusan National University
    Inventors: Soon-Joon Rho, Jang-Sub Kim, Baek-Kyun Jeon, Hee-Keun Lee, Jae-Chang Kim, Tae-Hoon Yoon, Phil-Kook Son, Jeung-Hun Park
  • Publication number: 20100182556
    Abstract: A liquid crystal display device that includes an array substrate, an opposite substrate and a liquid crystal display layer is described. The array substrate includes a pixel electrode and a lower alignment layer. The pixel electrode has a plurality of slit portions extending in different directions. The lower alignment layer includes a reactive mesogen (RM) diamine is formed on the pixel electrode to induce an alignment direction of the liquid crystal molecules. An upper alignment layer is formed on a common electrode of the opposite substrate. The RM is cured at surfaces of the lower and upper alignment layers in response to ultraviolet (UV) light, so that liquid crystal molecules have a pretilt angle. Therefore, the aperture ratio and the response time may be improved, and afterimages may be decreased, so that display quality may be improved.
    Type: Application
    Filed: January 7, 2010
    Publication date: July 22, 2010
    Inventors: Keun-Chan Oh, Jae-Jin Lyu, Ji-Won Sohn, Seon-Ah Cho
  • Patent number: 7760300
    Abstract: A sample for measuring an alignment axis for a liquid crystal display, a method of manufacturing the sample, and a method of measuring an alignment axis are disclosed. The sample includes a first substrate, a first alignment layer positioned on the first substrate, and a second alignment layer. The second alignment layer is positioned on the first alignment layer, and has an anisotropy more than an anisotropy of the first alignment layer.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: July 20, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Yong Sung Ham, Ha Young Lee, Byung Geol Kim
  • Publication number: 20100171916
    Abstract: A homeotropic alignment liquid crystal film is provided with a liquid crystalline substance containing a side chain liquid crystalline compound having an oxetanyl group, as a constituent, aligned homeotropically on an alignment substrate while being in a liquid crystal state and fixed in the homeotropic alignment by allowing the oxetanyl group to react. Thus, the homeotropic alignment liquid crystal film can be stably produced without necessitating a complicated step such as light irradiation under an inert gas atmosphere and is excellent in alignment retainability after being fixed in the homeotropic alignment and in mechanical strength.
    Type: Application
    Filed: March 18, 2010
    Publication date: July 8, 2010
    Applicant: NIPPON OIL CORPORATION
    Inventors: Hitoshi MAZAKI, Takashi SEKI, Takuya MATSUMOTO, Tetsuya UESAKA, Akio MUTOU
  • 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
  • Patent number: 7705942
    Abstract: A liquid crystal display panel includes a first substrate, a second substrate, and a liquid crystal layer formed between the first substrate and second substrate. The second substrate has an active region, a sealant surrounding the active region, and a spacer wall located between the active region and the sealant. Additionally, the spacer wall is used to prevent the liquid crystal layer from being contaminated by the sealant and to support the first substrate.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: April 27, 2010
    Assignee: Himax Technologies Limited
    Inventor: Bing-Jei Liao
  • Patent number: 7675598
    Abstract: An image display device includes a display panel, and a barrier including a plurality of transmissive portions and a plurality of blocking portions on the display panel, wherein the plurality of transmissive portions and the plurality of blocking portions are arranged in a matrix, wherein 3Nth rows and (3N?1)th rows include the plurality of transmissive portions and the plurality of blocking portions, N being a positive integer, (3N?2)th rows include the plurality of transmissive portions excluding the plurality of blocking portions, , and the transmissive and blocking portions are alternately arranged.
    Type: Grant
    Filed: December 26, 2006
    Date of Patent: March 9, 2010
    Assignee: LG Display Co., Ltd.
    Inventor: Hyung-Ki Hong
  • Publication number: 20100053527
    Abstract: 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: Application
    Filed: August 3, 2009
    Publication date: March 4, 2010
    Applicant: AU OPTRONICS CORP.
    Inventors: Chung-Ching Hsieh, Chia-Hsuan Pai, Cheng-Wei Huang, Te-Sheng Chen, Norio Sugiura