Ester (e.g., Polycarbonate, Polyacrylate, Etc.) Patents (Class 428/1.33)
  • Publication number: 20100221458
    Abstract: A liquid crystal composite is provided, which includes a liquid crystal compound and a nanoparticle. The liquid crystal compound is an optically compensated birefringence (OCB) liquid crystal compound. The nanoparticle has at least one acrylic functional group on the main chain or side chain thereof. The nanoparticle is 0.1-2 wt % by weight of the liquid crystal composite.
    Type: Application
    Filed: March 2, 2009
    Publication date: September 2, 2010
    Inventors: Hong-Cheu Lin, Wei-Hong Chen, Ling-Yung Wang, Chieh-Yin Tang, Szu-Fen Chen
  • Publication number: 20100215873
    Abstract: A system for displaying images including a display panel and a fabrication method of a display panel are provided. The display panel includes a first substrate and a second substrate opposite to the first substrate, wherein a total thickness of assembling the first and the second substrates is reduced by a thinning process, and by utilizing an acrylic-based or an epoxy acrylic-based polymer film to cover the outer surfaces of the first and the second substrates.
    Type: Application
    Filed: October 7, 2009
    Publication date: August 26, 2010
    Applicants: TPO DISPLAYS CORP., GLOBAL DISPLAY TAIWAN CO., LTD.
    Inventors: Yi-Chi LIAO, Shih-Yao LIN, Li-Chen WEI
  • Patent number: 7781033
    Abstract: An optical film comprising a layer consisting mainly of an organic compound and a layer containing inorganic fine particles wherein a content of the organic compound having a molecular weight of 1000 or less is 30% by mass or less based on a content of the inorganic fine particles. The optical film exhibits a low haze and a high contrast when being assembled into a liquid crystal display device.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: August 24, 2010
    Assignee: Fujifilm Corporation
    Inventors: Hiromoto Haruta, Osamu Takahashi
  • Publication number: 20100182551
    Abstract: The present invention provides an anti-glare film which has not only <1> sufficient anti-reflection property but also <2> a high level of contrast and <3> strong anti-glare properties and can be applied on a surface of various display devices such as a note PC, a desktop PC and a TV monitor. The anti-glare film of the present invention includes an anti-glare layer which has concavities and convexities on the surface, a haze according to JIS-7105-1981 in the range of 1.0-5.0%, and an average interval between concavities and convexities on the anti-glare layer surface Sm according to JIS-B0601-1994 in the range of 10-150 ?m.
    Type: Application
    Filed: January 20, 2010
    Publication date: July 22, 2010
    Applicant: Toppan Printing Co., Ltd.
    Inventors: Kae Tochigi, Yusuke Tochigi, Yasushi Yabuhara
  • Patent number: 7758777
    Abstract: Disclosed is a process for manufacturing a polarizing plate protecting film comprising the steps of providing a film formation composition containing cellulose resin having a total acyl substitution degree of from 2.5 to 2.9, a plasticizer and a hindered amine or hindered phenol compound, heat-melting the film formation composition to obtain a melt, extruding the melt to be in the form of sheet, and cooling the extruded sheet to form a film, wherein the cellulose resin contains an alkaline earth metal in an amount of from 1 to 50 ppm and a residual sulfuric acid (in terms of sulfur content) in an amount of from 0.1 to 45 ppm, based on the weight of cellulose resin.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: July 20, 2010
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Takashi Murakami
  • Patent number: 7749579
    Abstract: A rolled optical film includes a cellulose ester film which has a width of from 1 m to 3 m and a length of 500 m or more and is shaped in a rolled film. The cellulose ester film includes streaks from 1 line to 20 lines per 10 mm in a lateral direction thereof in which the streaks have a height of from 50 nm to 300 nm, an inclination of from 50 nm/mm to 300 nm/mm and a continuous length of 50 cm or more in a longitudinal direction thereof and the cellulose ester film does no includes a streak which has a height of 300 nm or more, an inclination of 300 nm/mm or more and a continuous length of 50 cm or more in a longitudinal direction thereof.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: July 6, 2010
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Takatoshi Yajima
  • Patent number: 7749578
    Abstract: An object of the present invention is to provide a polarizing plate protective film exhibiting a reduced variation value retardation, which is highly stable against polarizing plate degradation, polarizing plate dimension, and polarizing plate curl. Disclosed is a cellulose ester film possessing cellulose ester, polymer X having a weight average molecular weight of 2000-30000 prepared by copolymerizing ethylenic unsaturated monomer Xa containing no aromatic ring and hydrophilic group within a molecule and ethylenic unsaturated monomer Xb containing no aromatic ring but a hydrophilic group within a molecule, and polymer Y having a weight average molecular weight of 500-3000 prepared by polymerizing ethylenic unsaturated monomer Ya containing no aromatic ring.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: July 6, 2010
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Shigeki Oka, Kunio Shimizu, Takashi Takebe
  • Patent number: 7749577
    Abstract: Provided are multilayer laminates having one or more layers comprising twisted nematic liquid crystals and one or more layers of a polymeric sheet comprising a polymer with a modulus between 20,000 psi (138 MPa) and 100,000 psi (690 MPa). The twisted nematic liquid crystal layers reflect infrared radiation. Thus, the multilayer laminates are useful to reduce the transmission of infrared energy. For example, in some embodiments the multilayer laminates are useful as windows to reduce energy consumption necessary to cool the interior of a structure such as an automobile or building. Preferably, the multilayer laminates retain the beneficial properties of safety glass. The multilayer laminates may include additional layers such as infrared absorbing layers, half wave plates, and the like, to minimize the transmission of infrared energy. The multilayer laminates may also include further additional layers such as polymeric films, polymeric sheets, rigid sheets, and the like.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: July 6, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Marc B. Goldfinger, Richard A. Hayes, Lee A. Silverman
  • Patent number: 7744970
    Abstract: Provided are multilayer laminates having one or more layers comprising twisted nematic liquid crystals and one or more layers of a polymeric sheet comprising a polymer with a modulus of 20,000 psi (138 MPa) or less. The twisted nematic liquid crystal layers reflect infrared radiation. Thus, the multilayer laminates are useful to reduce the transmission of infrared energy. For example, in some embodiments the multilayer laminates are useful as windows to reduce energy consumption necessary to cool the interior of a structure such as an automobile or building. Preferably, the multilayer laminates retain the beneficial properties of safety glass. The multilayer laminates may include additional layers such as infrared absorbing layers, half wave plates, and the like, to minimize the transmission of infrared energy. The multilayer laminates may also include further additional layers such as polymeric films, polymeric sheets, rigid sheets, and the like.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: June 29, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Lee A. Silverman, Marc B. Goldfinger, Richard A. Hayes
  • Patent number: 7740919
    Abstract: A manufacturing method of a cellulose ester film satisfying the relationships, Nx>Ny>Nz, and 0.8?Rt/R0?3.5, the method comprising casting a cellulose ester dope containing a solvent of a good solvent and a poor solvent on a support to form a web; peeling the web from the support; transporting the peeled web (step D0); holding the edges in the transverse direction of the web (step A); stretching the resulting web in the transverse direction while applying a tension; reducing the tension in the transverse direction of the web; and drying the stretched web, wherein the residual solvent content of the web is 5 to 90% by weight at the beginning in the step A, and the residual poor solvent content in the residual solvent content of the web is from 15 to 95% by weight at the terminal point in the Step D0.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: June 22, 2010
    Assignee: Konica Corporation
    Inventors: Koji Tasaka, Hiroki Umeda, Noriyasu Kuzuhara, Takatoshi Yajima
  • Patent number: 7722932
    Abstract: Provided herein are one-solution type thermosetting resin compositions that may be useful to form protective films for color filters used in liquid crystal displays or image sensors. According to some embodiments, the resin compositions may include a self-curable copolymer and an epoxy compound. The protective films may exhibit desirable flatness, adhesiveness, transmittance, heat resistance and chemical resistance. Also provided are methods of forming a film on a substrate, and substrates having a film formed thereon. In addition, provided herein are color filters including a film formed from a composition according to an embodiment of the invention, and liquid crystal displays and image sensors including such color filters.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: May 25, 2010
    Assignee: Cheil Industries, Inc.
    Inventors: O Bum Kwon, Hyun Moon Choi, Sun Yul Lee, Kil Sung Lee
  • Patent number: 7722935
    Abstract: A modified polymer which can serve as a raw material of novel reverse dispersion retardation films is provided, the modified polymer having no need to select a plurality of monomers or polymers in order to realize a reverse dispersion and having no problems concerning glass transition temperature or the like in drawing treatment. A polymer having a polyol skeleton as its main chain is caused to react with a compound for modification such as an aromatic carboxylic acid hydride. Through this reaction, a modified polymer in which a chemical group such as an aromatic carbonyl group is bonded to an oxygen atom in a side chain of the polyol skeleton is prepared. For example, polyvinyl alcohols and benzoyl chloride can be used as the polymer and the compound for modification, respectively. The chemical group may be a benzoyl group. When this modified polymer is formed into a film and then subjected to drawing treatment, a retardation film which exhibits a reverse wavelength dispersion characteristic can be obtained.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: May 25, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Seiji Umemoto, Yutaka Ohmori, Michie Sakamoto, Takashi Kamijou, Junzou Miyazaki
  • Patent number: 7709067
    Abstract: A cellulose ester film comprising a compound represented by Formula (1): Formula (1) B-(G-A)n-G-B, wherein B represents a benzene monocarboxylic acid residue; G represents an alkylene glycol residue having 2-12 carbon atoms, an aryl glycol residue having 6-12 carbon atoms, or an oxyalkylene glycol residue having 4-12 carbon atoms; A represents an alkylene dicarboxylic acid residue having 4-12 carbon atoms or an aryldicarboxylic acid residue having 6-12 carbon atoms; and n represents an integer of 1 or more.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: May 4, 2010
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Takahiro Takagi, Isamu Michihata, Noriyasu Kuzuhara, Koichi Saito, Koji Tasaka, Hiroki Umeda, Minori Tamagawa, Shinji Inagaki
  • Publication number: 20100103699
    Abstract: The invention provides a light guide panel that improves luminance and reduces uneven luminance and color aberration. The light guide panel of the invention may be formed by irradiating laser light from a laser light source to the surface of an acrylic resin plate made of polymethylmethacrylate whose weight-average molecular weight is 10,000 to 100,000 or of a copolymer of 90 to 99.9% by weight of methyl methacrylate and 0.1 to 10% by weight of acrylic ester and whose weight-average molecular weight is 1,000 to 100,000 to form a light scattering pattern including a large number of concave portions each of which also includes a large number of micro-concavities and convexities therein.
    Type: Application
    Filed: October 21, 2009
    Publication date: April 29, 2010
    Applicant: Kuroda Electric Co., Ltd.
    Inventors: Makoto GONDA, Mitsuru Uchiyama, Satoshi Sasaki, Hirofumi Ishizeki
  • Patent number: 7695780
    Abstract: An optical film, which contains a cellulose acylate, at least one compound of formula (I) in an amount of 0.01 to 20 mass parts, and at least one cyclic compound having at least three substituents in an amount of 0.01 to 20 mass parts, to 100 mass parts of the cellulose acylate: wherein R1 to R7, R9 and R10 each independently is a hydrogen atom or a substituent; at least one of R1 to R5 is an electron-donating group; R8 is a hydrogen atom, an alkyl group, an alkenyl group, an alkinyl group, an aryl group, an alkoxy group, an aryloxy group, an alkoxycarbonyl group, an acylamino group, an alkylcarbonyloxy group, a cyano group, or a halogen atom; and an optical compensation sheet, a polarizing plate, and a liquid crystal display device, each of which uses the optical film.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: April 13, 2010
    Assignee: Fujifilm Corporation
    Inventors: Ikuko Ohgaru, Nobutaka Fukagawa, Terukazu Yanagi, Hiroshi Kawamoto
  • Patent number: 7682672
    Abstract: Disclosed are a negative C-type compensation film and a method of preparing the same. The negative C-type compensation film includes a) a base layer, and b) a polymer layer comprising polyarylate prepared by a method comprising the step of copolymerizing divalent phenols, divalent aromatic carboxylic acid halides, and allyl bisphenol derivatives, the base layer and the polymer layer being sequentially layered. The compensation film is capable of being used for the negative C-type compensation film without a stretching process, significantly reduces the thickness of the compensation film, and has significantly improved interlayer adhesion force in a multilayer structure.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: March 23, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Hyo Sun Lee, Dong Ryul Kim, Hee Jung Kim, Dae Woo Nam, Sang Uk Ryu, Boong Goon Jeong, Ju Eun Cha, Ho Jun Lee
  • Patent number: 7666482
    Abstract: A retardation film manufactured as a long roll film having a slow axis in a lateral direction of the long roll film, wherein an elastic modulus in an in-plane slow axis direction ?s and an elastic modulus in an in-plane fast axis direction ?f meet Condition (1), the in-plane fast axis direction being perpendicular to the in-plane slow axis direction: 1.26??s/?f?2.60??Condition (1).
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: February 23, 2010
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Hiroki Umeda, Noriyasu Kuzuhara
  • Patent number: 7662446
    Abstract: A polarizing plate has a polarizer and a protective film formed on at least one surface of the polarizer. The protective film is formed by curing an energy ray-curable composition that contains at least one of a first energy ray-polymerizing compound having a bisphenol residue, a second energy ray-polymerizing compound having a neopentylglycol group, a third energy ray-polymerizing compound having a trimethylolpropane group, and a fourth energy ray-polymerizing compound having a pentaerythritol group. In the polarizing plate, though the protective film is thin, the polarizer is protected from the influence of external moisture, etc., and therefore its polarizability is kept good even in high-temperature high-humidity environments.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: February 16, 2010
    Assignees: Sony Corporation, Sony Chemical & Information Device Corporation
    Inventors: Kaori Seki, Tadashi Akamatsu, Zemin Shi, Hiroyuki Torisu
  • Patent number: 7655284
    Abstract: Disclosed is a multi-functional monomer including a heat-curable functional group as well as a typical photoreactive group. In the multi-functional monomer, the photoreactive group is not chained to a main chain of a polymer. Thus, since it is possible to perform desirable alignment treatment even though polarized UV is radiated for a short time, the production time and the production cost are reduced and alignment regulating force of liquid crystals is increased, thereby increasing a dichroic ratio.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: February 2, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Kyung Jun Kim, Keon Woo Lee, Byung Hyun Lee, Min Young Lim, Hye Won Jeong, Jung Ho Jo, Heon Kim, Sung Joon Oh, Sung Ho Chun
  • Patent number: 7651743
    Abstract: A cellulose acylate film that has a crystallization index expressed by expression (A) as defined in the specification of from 0.70 to 1.02 and a modulus of elasticity in every arbitrary direction of an in-plane of the cellulose acylate film of from 3,800 MPa to 6,000 MPa; a manufacturing method of a cellulose acylate film comprising: casting a dope on a support; drying the dope on the support, so as to form a film; peeling the film from the support; and subjecting the film to a stretching treatment, wherein a crystallization index expressed by expression (A) of the film after peeling and before stretching is from 0.70 to 1.00; an optically compensatory sheet comprising the cellulose acylate film; and a polarizing plate and a liquid crystal display device using the optically compensatory sheet.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: January 26, 2010
    Assignee: Fujifilm Corporation
    Inventors: Nobutaka Fukagawa, Mitsuo Yoshikane
  • Patent number: 7641946
    Abstract: An adhesive film prevents static charge on peeling generated when removed from an adherend and also improves adhesion between a base material and an adhesive layer, where an under coat layer containing an organometallic is formed on the base material and then an adhesive layer is formed on the base material. Alternatively, an adhesive film showing high adhesion with a glass substrate, and including an antistatic layer, which prevents static charge on peeling generated when the surface protective film is removed, and improves adhesion between a base material and an adhesive layer, where the adhesive film includes a base material, an adhesive layer made of a water dispersible adhesive including, and an antistatic layer, containing a water soluble or water dispersible conductive material, interposed between them, and the adhesive film is stuck onto an image display device.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: January 5, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Mika Kanamaru, Kenichi Okada, Toshitaka Takahashi
  • Publication number: 20090324855
    Abstract: A liquid crystal display (LCD) panel comprising a bottom substrate, a top substrate and a liquid crystal (LC) layer interposed therebetween is provided. The LC layer comprises numerous LC compounds and a stabilization-aligned polymer polymerized by numerous polymerizable monomers and formed on at least one surface of the top substrate or the bottom substrate. These LC compounds comprise a first LC compound, a second LC compound and a third LC compound, wherein the third LC compound is selected from the group consisting of a compound 3A, a compound 3B, a compound 3C and a combination thereof.
    Type: Application
    Filed: May 5, 2009
    Publication date: December 31, 2009
    Applicant: AU OPTRONICS CORP.
    Inventors: Chung-Ching HSIEH, Yang-Chu LIN, Chia-Hsuan PAI, Te-Sheng CHEN, Norio SUGIURA
  • Publication number: 20090317567
    Abstract: A cellulose ester film with Rth>0 nm comprising a cellulose ester having a total degree of substitution of at least 2.3 and a polymer X with a weight-average molecular weight of 500-100000 satisfying 30%?A?100%, wherein A indicates the polymerization ratio of a monomer whose homopolymer has a negative birefringence, is excellent in humidity stability and wet heat durability.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 24, 2009
    Applicant: FUJIFILM CORPORATION
    Inventors: Jun Takeda, Ryousuke Takada, Masaya Suzuki, Hiromichi Tachikawa
  • Patent number: 7635506
    Abstract: In a stretched cellulose ester film containing a plasticizer, the plasticizer includes at least an aromatic terminal ester type plasticizer expressed by the following general formula (1): and stretched cellulose ester film includes a cellulose ester having a total acyl substitution degree of 2.4 to 2.9, a number average molecular weight (Mn) of 30000 to 200000, and a value of a weight-average molecular weight (Mw)/a number average molecular weight (Mn) being 1.4 to 3.0, B—(G—A)n—G—B??General formula (1) where B represents a benzenemonocarboxylic acid residue, G represents an alkylene glycol residue having a carbon number of 2 through 12 or an oxyalkylene glycol residue having a carbon number of 4 through 12, A represents an alkylene dicarboxylic acid residue having a carbon number of 4 to 12, and n indicates an integer of 0 or more.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: December 22, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Takahiro Takagi
  • Patent number: 7615264
    Abstract: A cellulose acylate film comprising a compound having a hydrogen-donating group capable of forming a hydrogen bond and an aromatic ring, and a compound represented by the following formula: wherein R2, R4, and R5 represent H or a substituent, R11 and R13 represent H or an alkyl group, L1 and L2 represent a single bond or a divalent linking group, Ar1 represents an arylene group or a divalent aromatic heterocyclic group, Ar2 represents an aryl group or a monovalent aromatic heterocyclic group, n represents an integer of 3 or more.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: November 10, 2009
    Assignee: Fujifilm Corporation
    Inventors: Nobutaka Fukagawa, Shigeo Uehira, Yutaka Nozoe, Kunihiro Atsumi
  • Patent number: 7611760
    Abstract: A cellulose acylate film is provided and has an elasticity modulus of 4,800 MPa to 10,000 MPa in at least either a machine direction MD at film-formation time or a direction TD perpendicular to the machine direction.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: November 3, 2009
    Assignee: Fujifilm Corporation
    Inventors: Hidenori Hayashi, Keiichi Taguchi, Kunihiro Atsumi, Yutaka Nozoe
  • Publication number: 20090269515
    Abstract: A liquid crystal display device being resistant to display unevenness without loss of responsivity and being capable of securing configurational stability is provided. A liquid crystal display device includes: a liquid crystal layer including liquid crystal molecules and a polymer compound including a structure represented by Chemical Formula 1; and a pair of substrates facing each other with the liquid crystal layer in between, where m and n each are an integer of 1 to 4 both inclusive.
    Type: Application
    Filed: April 24, 2009
    Publication date: October 29, 2009
    Applicant: SONY CORPORATION
    Inventor: Shingo Kataoka
  • Publication number: 20090252898
    Abstract: A transfer material comprising an optically anisotropic layer formed of a liquid crystalline composition comprising a monomer having an acidic group and/or a monomer which generates a monomer having an acidic group by an action of an acid or a base, and a photosensitive polymer layer, which is useful for forming an optically anisotropic layer in a liquid crystal cell, is provided. A process for easily producing a laminated structure having a patterned optically anisotropic layer, which comprises the following steps [1] and [2]: [1] subjecting the transfer material to patterned light exposure using photomask; and [2] removing the non-exposed parts of the transfer material by development with an aqueous alkaline solution, is also provided.
    Type: Application
    Filed: August 29, 2006
    Publication date: October 8, 2009
    Applicant: FujiFilm Corporation
    Inventors: Hidetoshi Tomita, Ichiro Amimori, Hideki Kaneiwa
  • Patent number: 7599028
    Abstract: A polarizing plate used in a vertical alignment mode liquid crystal display comprising a liquid crystal cell is disclosed, wherein the polarizing plate comprises a polarizing film and a mixed fatty acid cellulose ester film with optical biaxiality provided between the polarizing film and the liquid crystal cell, and wherein the mixed fatty acid cellulose ester film has a retardation in plane R0 of from 31 to 120 nm, and a retardation in the thickness direction Rt of from 60 to 300 nm, in which R0 is represented by the following formula (1) and Rt is represented by the following formula (2): R0=(nx?ny)×d??formula (1) Rt={(nx+ny)/2?nz}×d.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: October 6, 2009
    Assignee: Konica Corporation
    Inventors: Noriyasu Kuzuhara, Koji Tasaka, Hiroki Umeda, Takatoshi Yajima
  • Patent number: 7597945
    Abstract: The present invention relates to a polymer satisfying at least two characteristics among the characteristics such that it has orientation of homeotropic and so forth; it has an orientation having no (or less) defects; it has a large optical anisotropy; it is tightly adhered to a supporting plate; it has a sufficient hardness; it is colorless and transparent; it has a large heat resistance; it has a large weatherability; and so forth and to a composition which is the precursor. The composition contains the following the compound (1), (2) and (3). In the above formulas, R is hydrogen or methyl, L is hydrogen, fluorine and so forth, A is 1,4-phenylene and so forth, X is trifluoromethyl and so forth, Y is hydrogen or fluorine, Z is —COO— and so forth, and n is an integer of 1 to 10.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: October 6, 2009
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Yoshiharu Hirai, Takashi Kato
  • Patent number: 7595353
    Abstract: The invention provides a photocurable polymer composition having a fluorine-containing polymer and a fluorine-free polymer, and preferably further having a polymerizable double bond-containing compound and a photopolymerization initiator. The fluorine-containing polymer preferably includes a fluorosilsesquioxane skeleton.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: September 29, 2009
    Assignee: Chisso Corporation
    Inventors: Hisanobu Minamisawa, Mikio Yamahiro, Akira Meguro
  • Publication number: 20090233012
    Abstract: The present invention provides a light diffuser plate for a liquid crystal display, comprising: a low-hygroscopic resin layer (A) having a water absorption after 24 hours of 0.2% or less, as measured according to JIS K7209; and a styrenic resin layer (B) layered on at least one surface of the low-hygroscopic resin layer (A), the styrenic resin layer (B) comprising 50% or more of a styrenic resin and 3.5 to 5 parts by weight of an ultraviolet absorber based on 100 parts by weight of the styrenic resin, wherein the surface of the layer (B) has an arithmetic average roughness (Ra) of 5 ?m to 30 ?m, as measured according to JIS B0601. The present invention can provide a light diffuser plate for a liquid crystal display which is made of a low-hygroscopic resin capable of preventing warpage due to moisture absorption and also has a scratch resistant surface and significantly improved lightfastness.
    Type: Application
    Filed: October 11, 2006
    Publication date: September 17, 2009
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Masahiro Miyauchi, Norihiko Furuya
  • Publication number: 20090233011
    Abstract: Provided is a dust-free diffusion plate for a liquid crystal display (LCD) manufactured by coating and drying a conductive material to a thickness of no more than 2D on a surface of the diffusion plate to prevent degradation of image quality due to dust build-up on the diffusion plate.
    Type: Application
    Filed: May 30, 2005
    Publication date: September 17, 2009
    Inventors: Kwang Suck Suh, Jong Eun Kim, Tae Young Kim
  • Publication number: 20090226642
    Abstract: Perfluorinated polyimides (and co-polyimide) compositions, particularly films are disclosed, comprising at least 50 mole percent of a polymeric repeat unit derived from contacting 3,3?,4,4?-biphenyltetracarboxylic dianhydride (BDPA) and 2,2?-bis(trifluoromethyl) benzidine (TFMB) monomers. The perfluorinated polyimide (and co-polyimide) films of the invention have an in-plane coefficient of thermal expansion (CTE) between ?5 and +20 ppm/° C. and a average light transmittance percent of from about 65.0 to about 99.0 (on a 75-micron thick film basis). The films of the present invention were converted to a polyimide using a chemical conversion method instead of typically employed thermal conversion step thus yielding these desirable properties. The films of the present invention can be an excellent substrate in an optical display device and can be used to replace rigid glass substrates. Finally, the polyimide films of the invention can also be used to manufacture flexible display devices (e.g.
    Type: Application
    Filed: May 18, 2009
    Publication date: September 10, 2009
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: CHRISTOPHER DENNIS SIMONE, Brian C. Auman, Peter Francis Carcia, Richard A. Wessel
  • Publication number: 20090226641
    Abstract: A composition for melt casting film formation that excels in not only uniformity of retardation being an optical characteristic, especially uniformity of retardation in the direction of film width, but also contrast; and relevant thereto, an optical film, process for producing the optical film, polarization plate and liquid crystal display apparatus. Accordingly, there is provided a composition for melt casting film formation containing a cellulose ester in an amount of 50 mass % or more, characterized in that the free acid content of the composition is 50 ppm or less.
    Type: Application
    Filed: November 25, 2006
    Publication date: September 10, 2009
    Inventors: Kazuaki Nakamura, Kazuto Kiyohara, Norio Miura, Satomi Kawabe, Akihiko Takeda, Takayuki Suzuki, Takashi Konishi
  • Publication number: 20090225262
    Abstract: A liquid-crystal display device comprising a liquid-crystal cell comprising a liquid-crystal layer that aligns vertically to the substrate thereof in the black state, first and second polarizing elements that are disposed to sandwich the liquid-crystal cell therebetween so that their absorption axes are orthogonal to each other, a retardation film A and a retardation film B, wherein the retardation films A and B are equivalent to each other in terms of retardation in plane at a wavelength of 548 nm, Re(548), and retardation along thickness direction at a wavelength of 548 nm, Rth(548) thereof, but differ from each other in terms of the wavelength dispersion characteristics of retardation in plane Re and/or retardation along thickness direction Rth thereof in a visible light region, is disclosed.
    Type: Application
    Filed: February 2, 2009
    Publication date: September 10, 2009
    Applicant: FUJIFILM Corporation
    Inventors: Yujiro YANAI, Hajime NAKAYAMA, Hirofumi TOYAMA
  • Patent number: 7569259
    Abstract: A plasticizer comprising an ester compound produced by a condensation reaction of an organic acid represented by Formula (1) with a polyhydric alcohol having at least 3 hydroxyl groups in the molecule,
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: August 4, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Yasushi Okubo, Kazuto Kiyohara, Satomi Kawabe, Akihiko Takeda, Takayuki Suzuki, Kazuaki Nakamura
  • Patent number: 7559986
    Abstract: A phase difference plate which comprises one sheet of polymer film containing a compound having a rod-shaped molecular structure and exhibiting a maximum absorption wavelength (?max) of less than 250 nm in an ultraviolet spectrum of its solution and which exhibits a retardation value as measured at a wavelength of 450 nm (Re450) of 60 to 135 nm and a retardation value as measured at a wavelength of 590 nm (Re590) of 100 to 170 nm, where the relationship: Re590?Re450?2 nm is satisfied. The phase difference plate functions as a ?/4 plate.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: July 14, 2009
    Assignee: Fujifilm Corporation
    Inventors: Hiroshi Takeuchi, Hiroaki Sata, Hiroyuki Kawanishi, Takamichi Fujii
  • Patent number: 7550182
    Abstract: A polarization plate comprising a polarizer and polarizing plate protective films A and B provided on both surfaces of the polarizer, wherein (i) a thickness of each of the polarizing plate protective films A and B is 30 to 60 ?m; (ii) in-plate retardation value Ro of the polarizing plate protective film B is 20 to 100 nm; (iii) retardation value Rt in the thickness direction of the polarizing plate protective film B is 10 to 300 nm; (iv) a thickness of the polarizing plate is 80 to 160 ?m; (v) a stiffness of the polarizing plate of the polarizing plate under a condition of 23° C. and 55% RH is 20 to 80 g.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: June 23, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Shinji Inagaki, Noriyasu Kuzuhara, Hiroki Umeda
  • Publication number: 20090155496
    Abstract: A filament or fibre (2) comprising: a first conductive layer (4); an electro-optically active layer (6); a second conductive layer (8); wherein the filament or fibre has an off-state and an on-state, the electro-optically active layer comprising a combination of an electro-optically active substance and a polymer.
    Type: Application
    Filed: May 19, 2005
    Publication date: June 18, 2009
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Johannes T.A. Wilderbeek, Michel P.B. Van Bruggen, Jan M. Krans, Jacob M.J. Den Toonder
  • Patent number: 7547468
    Abstract: An optical film for use in a side-light type lighting device of a liquid crystal display or the like includes a plurality of tilted column-shaped transparent film cells extending from a light entrance surface to a light exit surface of the optical film. Light-reflecting layers are provided on a part of side surfaces of each film cell. Light from an LED light source enters a light guide plate, exits the top surface of the light guide plate, and enters the film cells. The light is reflected by the light-reflecting layers of the cells to exit therefrom as directed light.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: June 16, 2009
    Assignee: Citizens Electronics Co., Ltd.
    Inventor: Junji Miyashita
  • Patent number: 7548290
    Abstract: The polarizing plate with an optical compensation layer of the present invention includes: a hardcoat layer; a polarizer; a first optical compensation layer placed so that a slow axis thereof intersects with an absorption axis of the polarizer; and a second optical compensation layer placed so that a slow axis thereof intersects with the absorption axis of the polarizer in the stated order, wherein: the first optical compensation layer provides a substantially ½ retardation with respect to a wavelength of monochromatic light; the second optical compensation layer provides a substantially ¼ retardation with respect to a wavelength of monochromatic light; and the hardcoat layer contains urethaneacrylate, polyol (meth)acrylate, and (meth) acrylic polymer having an alkyl group containing at least two hydroxyl groups.
    Type: Grant
    Filed: November 24, 2006
    Date of Patent: June 16, 2009
    Assignee: Nitto Denko Corporation
    Inventors: Yoshitsugu Kitamura, Katsunori Takada
  • Patent number: 7524542
    Abstract: The present invention provides a negative C-plate type optical anisotropic film having negative birefringence along the thickness direction. In particular, the present invention provides a film comprising cycloolefin addition polymer, which is prepared by addition polymerizing norbornene-based monomers, a method for preparing the same, and a liquid crystal display comprising the same. The film of the present invention can be used for optical compensation films of a variety of LCD (liquid crystal display) modes because the refractive index alone the thickness direction can be controlled by the kind and amount of functional groups introduced to the cycloolefin addition polymer.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: April 28, 2009
    Assignee: LG Chem, Ltd.
    Inventors: Won-Kook Kim, Sung-Ho Chun, Sung-Cheol Yoon, Tae-Sun Lim, Heon Kim, Jung-Min Lee, Jeong-Su Yu
  • Publication number: 20090098315
    Abstract: The photoreactive adhesive composition of the present invention is cured in a short time and has a low percentage of water absorption and excellent adhesiveness after curing because it contains a monofunctional radically-polymerizable substance, a polyfunctional cationically-polymerizable substance, a noncrystalline polyester resin, a photoradical polymerization initiator, and a photocationic polymerization initiator.
    Type: Application
    Filed: October 12, 2007
    Publication date: April 16, 2009
    Inventor: Masanori Matsuda
  • Patent number: 7504139
    Abstract: To provide an optical film which exhibits excellent retardation values both in the film plane and along the direction perpendicular to the film plane and shows little change in retardation values depending on environmental factors such as humidity, a liquid crystal display showing little change in viewing angle characteristics due to an environmental (humidity) change, and a polarizing plate to be used in the liquid crystal display, the cellulose acylate contains a cellulose acylate which is a mixed fatty acid ester of a cellulose and satisfies formulae specified in the specification, and a polarizing plate and a liquid crystal display using this cellulose acylate film.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: March 17, 2009
    Assignee: Fujifilm Corporation
    Inventors: Hiroyuki Kawanishi, Sumio Ohtani, Yosuke Nishiura, Tadashi Ito
  • Patent number: 7501167
    Abstract: A cellulose acylate film comprising cellulose acylate which has a degree of crystallinity represented by the following expression (I) of 0.9 or more, and satisfies the following expressions (II) and (III): Degree of crystallinity=(X-ray diffraction intensity at 2? of 13°)/(X-ray diffraction intensity at 2? of 12°);??Expression (I) 2.6?A+B?3.0; and??Expression (II) 0.5?B?1.2??Expression (III) wherein A represents a substitution degree by an acetyl group of a hydroxyl group in a glucose unit of the cellulose acylate, and B represents a substitution degree by a substituent having from 3 to 4 carbon atoms of a hydroxyl group of a glucose unit of the cellulose acylate.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: March 10, 2009
    Assignee: Fujifilm Corporation
    Inventor: Susumu Sugiyama
  • Patent number: 7479312
    Abstract: A retardation film which contains a cellulose derivative and a plasticizer wherein the thickness of the film is 10 to 50 ?m, Ro in Equation (i) is in the range of 30 to 100 nm, Rt in Equation (ii) is in the range of 100 to 300 nm, and S in Equation (iii) is 0.0002 or more but not exceeding 0.030. Ro=(nx?ny)×d??Equation (i) Rt=S×d??Equation (ii) S=((nx+ny)/2?nz)??Equation (iii) (where “nx” is a maximum refraction index of the film surface, “ny” is a refraction index in the direction perpendicular to “nx,” “nz” is a refraction index along the thickness of the film, and “d” is the thickness of the film.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: January 20, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Minori Tamagawa, Isamu Michihata, Noriyasu Kuzuhara
  • Patent number: 7471360
    Abstract: A liquid crystal display device comprising a liquid crystal display in which polarizing plates A and B are provided so as to be held between a vertical orientation mode crystal cell and the corresponding liquid crystal cell, wherein the polarizing layer A comprises the polarizing plate protective films A1 and A2 and the polarizing layer B comprises the polarizing plate protective films B1 and B2, and at least one of the polarizing plate protective films A2 and B2 that are disposed at the liquid crystal cell side is a cellulose ester film Y that simultaneously satisfies the condition that retardation value Ro is 0 to 10 nm and Rt is ?20 to 20 nm shown by the equation below, and at least one of the polarizing plate protective films A2 and B2 is the optical compensation film W which has an optically anisotropic layer.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: December 30, 2008
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Takashi Murakami, Hiroki Umeda
  • Publication number: 20080305282
    Abstract: An antireflection film including a polyester base 10 and an antireflection layer that is disposed on a side 10a of one principal surface of the polyester base 10 by the wet coating method. The antireflection layer includes, from a side of the polyester base 10, a hard coat layer 11 and a low-refractive index layer 12 that is disposed above the hard coat layer. The hard coat layer is provided directly on the polyester base 10, the hard coat layer contains a metal oxide, and the metal oxide is contained in a ratio of 20 vol % to 42 vol %. The present invention provides an antireflection film in which a primer layer for improving adhesion is not provided between a polyester base and a hard coat layer and the occurrence of interference fringes is suppressed, and that delivers excellent antireflection performance and exhibits high scratch resistance, and a display front plate using the antireflection film.
    Type: Application
    Filed: June 3, 2008
    Publication date: December 11, 2008
    Inventors: Tomoki Inakura, Noriaki Otani
  • Patent number: 7462382
    Abstract: The present invention provides a method for producing an optical compensating sheet, comprising a step of simultaneously coating at least two coating solutions on a transparent support, wherein at least one of the coating solutions simultaneously coated in that step contains a liquid crystalline compound and another coating solution contains a surface active agent; an optical compensating sheet obtained by this method; an optical film comprising a support having thereon an optically anisotropic layer formed containing a liquid crystalline compound and a fluoroaliphatic group-containing copolymer containing a repeating unit derived from a fluoroaliphatic group-containing (meth)acrylate monomer and a repeating unit derived from a polyoxyalkylene (meth)acrylate monomer; and a polarizing plate and a liquid crystal display device each using the optical compensating sheet or optical film.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: December 9, 2008
    Assignee: Fujifilm Corporation
    Inventors: Yoji Ito, Tomokazu Yasuda, Nobutaka Fukagawa, Makoto Tanaka, Keiji Mihayashi