Class / Patent application number | Description | Number of patent applications / Date published |
428100200 | Alignment layer of specified composition | 79 |
20080241426 | Liquid crystal alignment layer - This invention relates to a photopolymer mixture capable of use for a liquid crystal alignment layer and to an alignment layer formed from such a photopolymer mixture. The mixture comprises at least two polymerisable materials which are blended together in proportion so as to give a predetermined, preferably low, surface energy. A low surface energy, e.g. less than 4×10 | 10-02-2008 |
20080274304 | Functionalized Photoreactive Compounds - The present invention concerns functionalized photoreactive compounds of formula (I), that are particularly useful in materials for the alignment of liquid crystals. Due to the adjunction of an electron withdrawing group to specific molecular systems bearing an unsaturation directly attached to two unsaturated ring systems, exceptionally high photosensitivities, excellent alignment properties as well as good mechanical robustness could be achieved in materials comprising said functionalized photoreactive compounds of the invention. | 11-06-2008 |
20080305280 | LIQUID CRYSTAL DISPLAY DEVICE AND DISPLAY APPARATUS - A disclosed liquid crystal display device includes a liquid crystal composition contained in a cell having a liquid crystal alignment film. The liquid crystal alignment film has a lamellar structure and includes at least one type of a triphenylene compound (I) represented by general formula (1): | 12-11-2008 |
20090117293 | O-Plate Having Excellent Durability and Itegrated Polarizing Plate Comprising the Same - There are provided an optical compensation film including an alignment film whose adhesiveness to a substrate and a liquid crystal layer and alignment property are excellent when a novel substrate is used to solve the problem regarding deteriorated durability being caused when a retardation film including a liquid crystal film is used under a hot and humid environment, and an integrated polarizing plate comprising the same. The O-plate includes a substrate; an alignment film prepared by coating the substrate with a composition for an alignment film that is composed of polyvinyl alcohol, a multifunctional acrylate monomer, a compatibilizing agent, a photo initiator and a solvent, followed by undergoing drying, curing and rubbing processes; and a splay-aligned liquid crystal film formed on the alignment film. | 05-07-2009 |
20090136687 | TOPOLOGICALLY STRUCTURED POLYMER COATING - Sub-micron-structured (nanostructured) polymer film or coatings are made by coating a substrate with a mixture of materials. One of the materials is removed using a selective solvent, leaving pores or other nanostructure. The substrate may be grooved, providing a competing nanostructure. The coating may act as an antireflective coating, optical retarder, optical diffuser, or orientation layer. | 05-28-2009 |
20090239002 | LIQUID CRYSTAL DISPLAY DEVICE, METHOD FOR MANUFACTURING THE SAME, AND ELECTRONIC APPARATUS - A liquid crystal display device includes a pair of substrates, and a liquid crystal layer that is vertically aligned in an initial state and sandwiched between the pair of the substrates. In the device, an alignment layer existing on an uppermost surface of at least one of the substrates is composed of alkyl chains having a different chain length each other, and an alkyl chain having a shortest chain length in the alkyl chains is tilted to the uppermost surface of the at least one of the substrates. | 09-24-2009 |
20090269513 | PHOTOALIGNMENT FILM COMPOSITION, OPTICALLY ANISOTROPIC MEDIUM AND METHOD FOR PREPARING THEREOF - 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: | 10-29-2009 |
20100015363 | LIQUID CRYSTAL DISPLAY PANEL AND FABRICATING METHOD THEREOF - 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. | 01-21-2010 |
20100047481 | Norbornene monomer, polynorbornene derivative, liquid crystal photoalignment film containing the same and liquid crystal display containing the same - The present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same, and a liquid crystal display device including the same. More particularly, the present invention relates to a norbornene monomer, a polynorbornene derivative, a liquid crystal alignment film including the same, and a liquid crystal display device including the same, which have an alignment property by photoreaction, excellent thermal stability and photoreactivity, the increased photo-reaction rate and reliability of the alignment film, thereby showing high manufacturing process efficiency. | 02-25-2010 |
20100047482 | PHOTO-REACTIVE COMPOUNDS AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME - The present invention provides photo-reactive compound. The photo-reactive compound, in which chains are combined to a polymer backbone that is used for a photo-alignment layer compound, is represented by the following Formula 1 or Formula 2. | 02-25-2010 |
20100086704 | CHOLESTERIC GLASSY LIQUID CRYSTALS WITH HYBRID CHIRAL-NEMATIC MESOGENS - A glassy cholesteric liquid crystalline composition comprising compounds with a volume-expanding core bound to one or more hybrid chiral-nematic (or Ch) pendant moieties and a method of producing oriented films of such compounds. The Ch pendant moieties are comprised of chiral spacer groups connected to the core via linker groups and nematic groups linked to the chiral spacer groups. Thin-films of the composition are morphologically stable for extended periods of time. Also, the thin-films are able to selectively interact with light from the visible to near-IR wavelength range. | 04-08-2010 |
20100151154 | Polymerizable liquid crystal composition and homeotropically-aligned liquid crystal film - A polymerizable liquid crystal composition is provided that can contains a mixture of polymerizable compounds containing a compound represented by the formula (1-1), a compound represented by the formula (2), a compound represented by the formula (3-1) and a compound represented by the formula (4), and a amine silane coupling agent. The composition can form a polymerizable liquid crystal layer exhibiting a uniform homeotropic alignment by coating the composition on a supporting substrate, independently from the kind of the supporting substrate without a special alignment film. Examples of each of the components are shown below, in which ring T represents triptycen-1,4-diyl. | 06-17-2010 |
20100189930 | COMPOSITION FOR PHOTO-ALIGNMENT FILM, PHOTO-ALIGNMENT FILM, AND OPTICALLY ANISOTROPIC MEDIUM - According to a composition for a photo-alignment film of the present invention, which includes an azo compound and a polymer that exhibits mutual solubility with the azo compound, an adhesion to a substrate, particularly to a plastic substrate, is improved within both a photo-alignment film having a haze of not more than 1 obtained by forming a layer of the above composition for a photo-alignment film on a substrate and subsequently irradiating the layer with light to generate a liquid crystal alignment ability; and an optically anisotropic medium, wherein a layer (A) obtained by irradiating a layer of the above composition for a photo-alignment film with light to generate a liquid crystal alignment ability, and a polymer layer (B) obtained by polymerizing a liquid crystal compound having a polymerizable group in an aligned state generated by the layer (A) are bonded and laminated together by covalent bonds. | 07-29-2010 |
20100221456 | LIQUID CRYSTAL DISPLAY AND METHOD OF MANUFACTURING THE SAME - The invention relates to a liquid crystal display utilizing a vertically aligned state of liquid crystal molecules when no voltage is applied and to a method of manufacturing the same. The invention is aimed at providing a liquid crystal display and a method of manufacturing the same in which the existing step for forming vertical alignment films can be omitted to achieve a cost reduction. | 09-02-2010 |
20100272926 | Liquid Crystal Composition and Liquid Crystal Display Device - The invention provides a liquid crystal composition that satisfies at least one characteristic among the characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a large optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light, and a high stability to heat, or provides a liquid crystal composition that is properly balanced regarding at least two characteristics. The invention provides an AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. | 10-28-2010 |
20100272927 | Liquid Crystal Composition and Liquid Crystal Display Device - The subject is to provide a liquid crystal composition that satisfies at least one characteristic among the characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a large optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding at least the two characteristics. It is to provide an AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. | 10-28-2010 |
20100297367 | OPTICALLY ANISOTROPIC SUBSTANCE - Subject to be Solved The invention aims to provide a polyamic acid-type photo-alignment layer in a heating process only below approximately 140° C., and to provide an optically anisotropic substance in which various polymerizable liquid crystal compositions are uniformly oriented by use of the layer. | 11-25-2010 |
20100304049 | LIQUID CRYSTAL DISPLAY - The present invention relates to a liquid-crystal (LC) display of the PSA (polymer sustained alignment) type, and to polymerisable compounds and LC media for use in PSA displays. | 12-02-2010 |
20110097519 | Liquid Crystal Composition and Liquid Crystal Display Device - Subject The subject is to provide a liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of the nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding at least two of the characteristics. The subject is also to provide the AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life, and so forth. | 04-28-2011 |
20110268894 | FLUORINE-CONTAINING LIQUID CRYSTAL COMPOUND, LIQUID CRYSTAL COMPOSITION, AND LIQUID CRYSTAL ELECTRO-OPTIC ELEMENT - A liquid crystal compound, a liquid crystal composition, and a liquid crystal electric optical device having a low rotational viscosity (γ1) and appropriate elastic constants. A fluorine-containing liquid crystal compound represented by formula (1). R | 11-03-2011 |
20120009359 | NORBORNENE POLYMER COMPRISING PHOTOREACTIVE FUNCTIONAL GROUP HAVING HALOGEN SUBSTITUENT GROUP, PROCESS FOR PREPARING THE SAME, AND ALIGNMENT LAYER USING THE SAME - The present invention relates to a photoreactive norbornene polymer comprising a photoreactive norbornene monomer, a process for preparing the same, and an alignment layer using the same. The photoreactive norbornene polymer includes a photoreactive functional group having a halogen, in particular, a fluorine substituent group so that it gives a compositional gradient in the alignment layer to improve an orientation rate, an orientation, and an adhesion property. | 01-12-2012 |
20120015115 | DISPLAY PANEL - A display panel includes a first substrate, a second substrate, a liquid crystal material between the first and second substrates, and an alignment layer on at least one of the first and second substrates. The liquid crystal material includes 10-90 wt % of a non-polar liquid crystal compound and 10-90 wt % of a polar liquid crystal compound, wherein a total amount of the non-polar and the polar liquid crystal compounds is 100 wt %. The non-polar liquid crystal compound has a dielectric anisotropy (Δε) of −1≦Δε≦1, and the polar liquid crystal compound has a dielectric anisotropy (Δε) of Δε≧1. The alignment layer has at least one of a polyamic acid and a cyclodehydration of the polyamic acid, wherein the polyamic acid is obtained by reacting a diamine compound with a tetracarboxylic acid dianhyhydirde compound. | 01-19-2012 |
20120015116 | PHOTOREACTIVE POLYMER AND PREPARATION METHOD THEREOF - This disclosure relates to photoreactive polymer exhibiting more rapid photoreaction speed and excellent alignment, a preparation method thereof, and an alignment layer comprising the same. The photoreactive polymer comprises a specific repeat unit including an azo type functional group in the content of 50 mole % or more of the total polymer. | 01-19-2012 |
20120021141 | COMPOSITION FOR LIQUID CRYSTAL ALIGNMENT LAYER AND LIQUID CRYSTAL ALIGNMENT LAYER - The present invention relates to a composition for liquid crystal alignment layer used to provide a liquid crystal alignment layer that exhibits excellent alignment and maintains stable alignment without disturbance despite external stress such as electrical/thermal stress, a liquid crystal alignment layer, and a liquid crystal cell. The composition for liquid crystal alignment layer comprises a norbornene-based polymer having a photoreactive group, a binder, a reactive mesogen, and a photoinitiator. | 01-26-2012 |
20120021142 | ALIGNMENT LAYER COMPOSITION, ALIGNMENT LAYER PREPARED WITH THE SAME, PREPARATION METHOD OF ALIGNMENT LAYER, OPTICAL FILM CONTAINING THE SAME, AND DISPLAY DEVICE INCLUDING THE OPTICAL FILM - The present invention relates to a liquid crystal alignment layer composition showing excellent adhesive strength to a substrate and a liquid crystal layer and excellent homeotropic alignment of liquid crystals, a liquid crystal alignment layer prepared with the same, a preparation method of the liquid crystal alignment layer, an optical film including the liquid crystal alignment layer, and a display device including the same. According to the present invention, provided are a liquid crystal alignment layer composition which comprises 1-50 wt % of a photocurable resin binder, 0.01-5 wt % of an amine compound selected from the group consisting of primary and secondary amino-based coupling agents, 0.1-5 wt % of a photoinitiator, and the remainder solvent; a method for preparing a liquid crystal alignment layer by coating the substrate with the liquid crystal alignment layer composition, removing the solvent, and curing the liquid crystal alignment layer composition; an alignment layer which is prepared with the liquid crystal alignment layer composition of the present invention; an optical film which comprises the substrate, the alignment layer, and a liquid crystal layer formed on the alignment layer; and a display device including the optical film. The liquid crystal alignment layer formed with the liquid crystal alignment layer composition of the present invention has excellent adhesive strength to the substrate and to an upper liquid crystal layer, and provides excellent homeotropic alignment to liquid crystals. The optical film of the present invention can be applied to a polarizer by itself and can be very helpfully used as a retardation film or a view angle compensation film in various types of LCD modes such as IPS mode and the like. | 01-26-2012 |
20120027960 | MESOGENIC STABILIZERS - The present invention relates to compounds represented by the following Formula Ic, | 02-02-2012 |
20120076953 | CYCLIC OLEFIN COMPOUND HAVING PHOTOREACTIVE GROUP AND PHOTOREACTIVE POLYMER - Disclosed therein is a novel cyclic olefin compound having a photoreactive group and a novel photoreactive polymer. The cyclic olefin compound is applicable to various photoreactions, such as of liquid crystal alignment films and can be preferably used as a precursor of different organic compounds or polymers. | 03-29-2012 |
20120076954 | CYCLIC OLEFIN COMPOUND, PHOTOREACTIVE POLYMER, AND ALIGNMENT LAYER COMPRISING THE SAME - Disclosed therein are a cyclic olefin compound, a photoreactive polymer, and an alignment layer comprising the photoreactive polymer, where the cyclic olefin compound can be used to provide the photoreactive polymer having not only excellences in liquid crystal alignment and alignment rate but also readiness for change in the alignment direction depending on the polarization direction. | 03-29-2012 |
20120082805 | COMPOSITION FOR FORMING THERMOSET FILM HAVING PHOTO ALIGNMENT PROPERTIES - A material from which a cured film exhibiting high solvent resistance, liquid crystal-alignment performance, heat resistance and high transparency can be formed. A composition for forming a thermoset film having photo alignment properties, including: a component (A) that is an acrylic copolymer having a photodimerizing moiety and a thermal cross-linking moiety; and a component (B) that is a cross-linking agent. | 04-05-2012 |
20120114879 | COMPOSITION FOR FORMING THERMOSET FILM HAVING PHOTO ALIGNMENT PROPERTIES - A material from which a cured film exhibiting high solvent resistance, liquid crystal-alignment performance, heat resistance and high transparency can be formed. A composition for forming a thermoset film having photo alignment properties, the composition comprising: a component (A) that is an acrylic copolymer having a photodimerizing moiety and a thermal cross-linking moiety; a component (B) that is an acrylic polymer having at least one of a C | 05-10-2012 |
20140010973 | LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal composition including a polymerizable compound, and an AM device including the liquid crystal composition are described. The liquid crystal composition includes the compound (1) and the compound (2): | 01-09-2014 |
20140017417 | TRANSPARENT CONDUCTIVE FILM, TRANSPARENT ELECTRODE SUBSTRATE AND METHOD FOR PRODUCING LIQUID CRYSTAL ALIGNMENT FILM BY USING THE SAME, AND CARBON NANOTUBE AND METHOD FOR PRODUCING THE SAME - Problem to be Solved | 01-16-2014 |
20140120272 | LIQUID CRYSTAL COMPOSITION - The present application relates to a liquid crystal composition, a liquid crystal cell, a liquid crystal film, and methods of preparing the same. As an exemplary liquid crystal composition, according to the present application can provide a liquid crystal layer aligned without a special alignment layer. According to the liquid crystal composition, all of the liquid crystal cell, in which the liquid crystal layer is maintained in a non-polymerized state, and the liquid crystal film prepared by polymerizing the liquid crystal layer can be provided. | 05-01-2014 |
20140154428 | CINNAMIC ACID DERIVATIVE, POLYMER THEREOF, AND LIQUID CRYSTAL ALIGNMENT LAYER COMPRISING CURED PRODUCT THEREOF - Provided is a liquid crystal alignment layer of which a constituent member is a compound represented by the general formula (I). | 06-05-2014 |
20140161993 | ACRYLATE COMPOUND HAVING PHOTOREACTIVE GROUP, PHOTOREACTIVE ACRYLATE POLYMER AND PHOTO-ALIGNMENT LAYER COMPRISING THE SAME - Disclosed therein are an acrylate compound having a photoreactive group, a photoreactive acrylate polymer, and a photo-alignment layer comprising the same that not only have excellences in alignment properties and alignment rate and readiness for change in the alignment direction based on the polarization direction of radiation but also exhibit a high solubility to organic solvents and good workability. | 06-12-2014 |
20140308462 | FILM USING POLYMERIZABLE LIQUID CRYSTAL COMPOSITION CONTAINING PEELING PREVENTIVE AGENT - A problem is, in a liquid crystal film in which an alignment layer and a liquid crystal composition layer having homogeneous alignment are formed on a support substrate, to improve adhesion between the alignment layer and the liquid crystal composition layer, and durability under a severe environment such as high temperature and high humidity. A solution is a non-liquid crystalline polymerizable compound having a radically polymerizable group and a cationically polymerizable group in a molecule is simultaneously used as an antistripping additive in a polymerizable liquid crystal composition layer having homogeneous alignment. | 10-16-2014 |
20150072086 | LIQUID CRYSTAL COMPOSITION - The present application relates to a liquid crystal composition, a liquid crystal cell, a liquid crystal film, and methods of preparing the same. As an exemplary liquid crystal composition, according to the present application can provide a liquid crystal layer aligned without a special alignment layer. According to the liquid crystal composition, all of the liquid crystal cell, in which the liquid crystal layer is maintained in a non-polymerized state, and the liquid crystal film prepared by polymerizing the liquid crystal layer can be provided. | 03-12-2015 |
20150093520 | CYCLIC OLEFIN COMPOUND, PHOTOREACTIVE POLYMER, AND ALIGNMENT LAYER COMPRISING THE SAME - Disclosed therein are a cyclic olefin compound, a photoreactive polymer, and an alignment layer comprising the photoreactive polymer, where the cyclic olefin compound can be used to provide the photoreactive polymer having not only excellences in liquid crystal alignment and alignment rate but also readiness for change in the alignment direction depending on the polarization direction. | 04-02-2015 |
20150125631 | OPTICAL FILM AND DISPLAY DEVICE USING THE SAME (As Amended) - Disclosed therein are an optical film and a display device comprising the same, where the optical film comprises a first optically anisotropic layer including a liquid crystal compound and a second optically anisotropic layer including a repeating unit having a photoreactive group, thereby securing improved photoreaction rate and excellent liquid crystal alignment. | 05-07-2015 |
20150376506 | ALIGNMENT METHOD AND LIQUID CRYSTAL DISPLAY PANEL - An alignment method includes: (1) providing a substrate, applying a coating material formed from any two materials of aromatic dianhydrides, aromatic diamines or diamines containing biphenyl and hexyl in side groups; (2) sputtering a third material which is not coated in step (1) along a direction having an angle not equal to zero with the substrate for conducting a polymerization reaction with the two materials coated in step (1) to generate a reaction product; (3) thermally treating the reaction product. The diamine containing biphenyl and hexyl in side group reacts with the main group to form a side chain, and thus controls the pretilt angle while assisted with physical sputtering to sputter in a certain angle, thereby forming a pretilt direction. | 12-31-2015 |
20160053176 | COMPOSITION FOR FORMING OPTICALLY ANISOTROPIC LAYER - A composition is provided for forming an optically anisotropic layer. The composition includes a polymerizable liquid crystal compound, a photopolymerization initiator, and an ester solvent having a boiling point of 120° C. to 200° C. and a vapor pressure of 0.7 kPa or less. | 02-25-2016 |
20160083655 | CYANOSTILBENES - The present invention relates to novel compounds that are particularly useful for the alignment, especially photoalignment, of slave material, especially liquid crystals for optical or electro-optical applications, such as security applications, liquid crystal devices or optical or electro-optical films. | 03-24-2016 |
20160139465 | ALIGNMENT PLATE - Embodiments of the present invention provide an alignment plate, and relates to the field of display technique. The alignment plate comprises a substrate layer and a protection layer covering a surface of the substrate layer; the protection layer exposes the substrate layer in predefined regions; and the substrate layer is provided with grooves in the predefined regions, and the grooves form alignment marks of the alignment plate. The alignment plate can be used for fabricating a display device, and can prevent alignment marks on the alignment plate from distorting or falling off due to rubbing. | 05-19-2016 |
20160250826 | ANISOTROPIC ORGANIC THIN FILM AND ITS MANUFACTURING METHOD | 09-01-2016 |
20160252779 | OPTICAL ALIGNMENT FILM, ITS MANUFACTURING METHOD, AND LIQUID CRYSTAL DISPLAY DEVICE | 09-01-2016 |
428100210 | Alignment layer is inorganic | 3 |
20080317977 | LIGHT-REGULATION MEMBRANE - A light-regulation membrane includes a surface structure having an anti-stain layer for surface cleanness, a hard coating layer for surface protection, and anti-reflective layer sandwiched between the anti-stain layer and the hard coating layer for reducing glare and ultra-violet; an adhesion layer for directly and repetitively adhering on transmissible plate even after peeled-off; two polymer compound layers sandwiched between the hard coating layer and the adhesion layer; and a PDLC (polymer dispersed liquid crystal) film sandwiched between the two polymer compound layers comprising two conducting layers and a liquid crystal layer sandwiched in-between the two conducting layers. The two conducting layers can be connected to an electric power source. So, the transparency of the light-regulation membrane can be regulated from opaque to clear or reversely while the transmittance of the PDLC film being adjusted by the power, and then any light source passing through the light-regulation membrane can be controlled. | 12-25-2008 |
20090061116 | METHOD OF FORMING MICROSTRUCTURES ON A SUBSTRATE AND A MICROSTRUCTURED ASSEMBLY USED FOR SAME - A method of forming microstructures on a substrate is disclosed. A microstructured assembly that may be used in the method for forming microstructures on a substrate is also disclosed. The methods and assemblies of the present disclosure can reduce the amount of air entrapped in barrier ribs formed on substrates used in Plasma Display devices. | 03-05-2009 |
20110039040 | METHOD OF FORMING MICROSTRUCTURES ON A SUBSTRATE AND A MICROSTRUCTURED ASSEMBLY USED FOR SAME - A method of forming microstructures on a substrate is disclosed. A microstructured assembly that may be used in the method for forming microstructures on a substrate is also disclosed. The methods and assemblies of the present disclosure can reduce the amount of air entrapped in barrier ribs formed on substrates used in Plasma Display devices. | 02-17-2011 |
428100230 | Silicon compound (i.e., organosilicon) | 8 |
20090155494 | METHOD FOR MANUFACTURING FLAT SUBSTRATES - For avoiding the metallic inner surface of a PECVD reactor to influence thickness uniformity and quality uniformity of a μc-Si layer ( | 06-18-2009 |
20100068419 | RETARDATION FILM, A METHOD FOR PREPARING RETARDATION FILM AND POLARIZER COMPRISING THE RETARDATION FILM - There is provided a retardation film capable of adjusting an angle between a proceeding direction of a film and an optical axis of liquid crystal by employing an alignment layer formed of polymers including norbornene and improving thermal stability and photoreaction rate, a method for preparing the retardation film and a polarizer comprising the retardation film. The retardation film includes a substrate, an alignment layer formed on the substrate and made of polymers including norbornene, and an alignment layer fixing layer formed on the alignment layer and made of liquid crystal materials; the method for preparing a retardation film includes: forming a polymer layer by coating a substrate with a polymer solution including norbornene and drying the polymer solution, forming an alignment layer by irradiating the copolymer layer with linearly polarized ultraviolet rays in a predetermined direction relative to a proceeding direction of a film to give an orientation to the copolymer layer, forming a liquid crystal layer on the alignment layer by coating the alignment layer with a nematic liquid crystal solution and drying the nematic liquid crystal solution, and fixing the orientation of the liquid crystal layer by curing the liquid crystal layer; and the polarizer includes the retardation film and a polarizer film, both of which are stacked with each other. The retardation film has improved thermal stability and light reaction speed, and the retardation film whose optical axis has a desired orientation angle relative to a proceeding direction of the retardation film may be easily prepared through the irradiation of polarized ultraviolet rays. | 03-18-2010 |
20110111139 | LIQUID CRYSTAL ALIGNMENT LAYER AND METHOD FOR MANUFACTURING THE SAME - A liquid crystal alignment layer and a method for manufacturing the same are provided. The liquid crystal alignment layer includes an organic material layer and a plurality of silicon dioxide particles. The plurality of silicon dioxide particles is formed on the organic material layer, and each silicon dioxide particle contains at least one amino (—NH | 05-12-2011 |
20110129622 | ALIGNMENT LAYER FOR LCD - A polymer for use in an alignment layer for a liquid crystal material is provided. The polymer comprises a polymer backbone comprising a plurality of repeating units, said repeating units being divided into at least two groups, wherein each repeating unit in a first group of said repeating units is functionalized with a pendant sidechain of a first type S | 06-02-2011 |
20110135850 | PHOTOALIGNMENT MATERIALS HAVING IMPROVED ADHESION - The present disclosure provides for new photoalignment (co)polymer materials which demonstrate improved adhesion to a substrate. The (co)polymeric structure includes at least one photochemically active chromophore and at least one adhesion promoter group. Articles of manufacture, optical elements, ophthalmic elements and liquid crystal cells which include at least one photoalignment layer made from the photoalignment (co)polymer materials and methods for formation are also disclosed. | 06-09-2011 |
20110236602 | PHOTOACTIVE MATERIALS - Diamine compounds, which in particular are useful as precursors for the production of liquid crystal alignment layers, are represented by the general formula I: | 09-29-2011 |
20130101755 | LIQUID CRYSTAL DISPLAY DEVICE, ALIGNMENT FILM, AND METHODS FOR MANUFACTURING THE SAME - An alignment film includes a first pre-tilt functional group, a second pre-tilt functional group and a first vertical alignment functional group, which are linked to polysiloxane on a substrate. The first vertical alignment functional group includes a cyclic compound and is aligned substantially perpendicularly to the substrate. The first pre-tilt functional group is cross-linked to the second pre-tilt functional group and tilted with respect to the substrate. | 04-25-2013 |
20140106089 | LIQUID CRYSTAL COMPOSITION - A liquid crystal composition, a liquid crystal film and a display device are provided. The liquid crystal composition can be uniformly aligned with no problems such as dewetting in an operation of aligning horizontally alignable liquid crystals. Also, a state of the aligned liquid crystal compound can be stably maintained. | 04-17-2014 |
428100250 | Polyamide | 5 |
20080213509 | Composition for LC alignment film using diamine having dendron side chain - Disclosed herein is an LC aligning agent using diamine having dendron side chains. In detail, the present invention relates to a composition for an LC alignment film which employs diamine having dendron side chains to produce polyamic acid, followed by imidization. When the LC alignment film is applied to a liquid crystal display device, high heat resistance, high penetration in a visible ray range, excellent alignment, and a high voltage holding ratio are assured. Even though it contains a small amount of functional diamine, a high pretilt angle can be assured. Thus, the pretilt angle is easily controlled and a vertical aligning force is improved. | 09-04-2008 |
20080226845 | Polyamic acid-based composition and liquid crystal orienting film - A polyamic acid-based composition includes: a polyamic acid A prepared by a process including reacting an aromatic tetracarboxylic dianhydride and an aromatic diamine; and a polyamic acid B prepared by a process including reacting an aliphatic tetracarboxylic dianhydride, an aromatic diamine having a side chain, and a non-aromatic diamine. A liquid crystal orienting film is formed by a process including: preparing a mixture containing the aforesaid polyamic acid-based composition and a solvent; coating the mixture onto a substrate so as to form a film on the substrate; and heating the film so as to convert polyamic acid of the polyamic acid-based composition into polyamide. | 09-18-2008 |
20090053430 | Liquid Crystal Display Device and Manufacturing Method Thereof - Disclosed herein is an IPS type liquid crystal display device superior in mass productivity and improved in image quality with a higher contrast ratio by decreasing the occurrence of defective display due to the disorder of the initial liquid crystal alignment by the liquid orientation control film and realizing stable alignment of liquid crystals. A liquid crystal display device comprises: a pair of substrates | 02-26-2009 |
20100143612 | Polymerizable liquid crystal composition and homogeneous-aligned liquid crystal film - A polymerizable liquid crystal composition is provided that can exhibit a uniform homogeneous alignment by coating the composition on a supporting substrate having been subjected to an alignment treatment. The polymerizable liquid crystal composition contains a mixture of polymerizable compounds containing a compound selected from a group of compounds represented by the formula (1-1) as a component A and a compound selected from a group of compounds represented by the formula (2-1) as a component B as essential components, and optionally containing a compound selected from a group of compounds represented by the formulae (3-1) to (3-3) as a component C and/or a compound selected from a group of compounds represented by the formula (4-1) as a component D, and contains at least one nonionic surfactant as a component E. Examples of each of the components are shown below, in which T represents triptycen-1,4-diyl. | 06-10-2010 |
20120128899 | LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF FABRICATING THE SAME - A liquid crystal display (LCD) device includes at least one substrate; and an alignment layer over the substrate, wherein the alignment layer includes material having a main chain adapted to be aligned by a rubbing process and a photo-reactive side chain adapted to be aligned by irradiation. | 05-24-2012 |
428100260 | Polyimide | 18 |
20080213510 | Liquid Crystal Aligning Agent and Liquid Crystal Alignment Layer Formed Using the Same - A liquid crystal aligning agent suitable for use in the production of a liquid crystal display device is provided. The liquid crystal aligning agent comprises at least one polymer selected from a polyamic acid and a soluble polyimide, an aprotic polar solvent and monoethylene glycol dimethyl ether or dipropylene glycol dimethyl ether. The liquid crystal aligning agent has satisfactory printability. Further provided is a liquid crystal alignment layer formed using the aligning agent. The liquid crystal alignment layer is highly uniform. | 09-04-2008 |
20090029072 | Polyimide Resin Composition, Liquid Crystal Alignment Film using Same and Liquid Crystal Display using Such Liquid Crystal Alignment Film - Disclosed is a polyimide resin composition which is composed of an acid dianhydride and a diamine compound and has a long-chain alkyl group in a side chain of the polyimide skeleton. The polyimide resin composition contains an aromatic component so that the weight ratio of the aromatic component relative to the total weight of the polyimide is not more than 20% (excluding 0%). | 01-29-2009 |
20090041955 | ALIGNMENT MATERIAL FOR LIQUID CRYSTAL DISPLAY DEVICE OF VERTICAL ALIGNMENT MODE AND METHOD OF PREPARING THE SAME - This invention provides alignment materials for liquid crystal display device of vertical alignment mode and methods for the preparation of the same, and more particularly, it provides diaminobenzene derivatives represented by the following formula 1: | 02-12-2009 |
20090130343 | Liquid crystal display device and manufacturing method thereof - An LCD device adapted to improve a residual image matter is disclosed. The LCD device includes an alignment layer aligning the liquid crystal. The alignment layer is formed of an optically aligned composition inclusive of an aromatic compound. Also, the alignment layer undergoes a crosslinking process. In accordance therewith, the thermalization of the alignment layer is improved. As a result, the residual image problem of the LCD device can be solved. | 05-21-2009 |
20090220707 | LIQUID CRYSTAL ALIGNING AGENT AND LIQUID CRYSTAL DISPLAY DEVICE EMPLOYING IT - To provide a liquid crystal aligning agent useful to obtain a liquid crystal alignment film excellent in liquid crystal alignment properties, alignment controlling power and rubbing resistance, having high voltage retention characteristics and having reduced charge accumulation, and a liquid crystal display device which is less susceptible to display failure, to lowering of contrast or to image persistence. | 09-03-2009 |
20100034989 | ALIGNMENT SUBSTRATE, METHOD OF MANUFACTURING THE ALIGNMENT SUBSTRATE AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE ALIGNMENT SUBSTRATE - An alignment substrate includes a substrate and an alignment layer. The substrate includes a plurality of unit pixel areas. Each of the unit pixel areas includes a plurality of sub-pixel areas arranged in a matrix configuration. The alignment layer is on the substrate and has polymer chains protruding from a surface of the alignment layer. The alignment layer has a plurality of alignment vectors in which the polymer chains are pretilted according to the sub-pixel areas. The alignment vectors corresponding to adjacent sub-pixel areas point in different directions from each other. | 02-11-2010 |
20100136264 | Liquid Crystal Alignment Agent, and Liquid Crystal Alignment Film and Liquid Crystal Display Including Same - Disclosed are a liquid crystal alignment agent, and a liquid crystal alignment film and a liquid crystal display (LCD) including the same. The liquid crystal alignment agent includes a polymer of polyamic acid, a polyimide, or a combination thereof, and an epoxy compound represented by the following Chemical Formula 1. | 06-03-2010 |
20100151155 | Liquid Crystal Alignment Agent and Liquid Crystal Alignment Film Manufactured Using the Same - The liquid crystal alignment agent according to one embodiment of the present invention includes a soluble polyimide polymer of Formula 1 and a solvent. The soluble polyimide polymer has a number average molecular weight of about 10,000 to 500,000 g/mol, and a polydispersity of about 1.2 to about 1.75. The liquid crystal alignment agent can have good printability on a substrate, and thereby can provide a liquid crystal alignment film that can have excellent film uniformity, even though its predrying temperature is varied. | 06-17-2010 |
20100255221 | POLYIMIDE FILM - Disclosed is a polyimide film, which is colorless and transparent, with superior mechanical properties and high thermal stability. | 10-07-2010 |
20100255222 | DISPLAY ELEMENT - A display element that includes substrates each having a thin film layer formed by applying a thin film layer composition thereon by an ink-jet method, in which, in the formation of the thin film layers, streaky display unevenness does not develop along a direction in which an ink-jet head discharges the composition having the shape of dots aligned on straight lines from the nozzles. In the liquid crystal display element | 10-07-2010 |
20120088040 | ALIGNMENT FILM, COMPOSITION FOR FORMING ALIGNMENT FILM AND LIQUID CRYSTAL DISPLAY DEVICE - Disclosed is a liquid crystal display device including: a first substrate and a second substrate, one of which is transparent; a liquid crystal layer disposed between the first substrate and the second substrate; a group of electrodes for applying an electric field to the liquid crystal layer, which is formed on one of the first substrate and the second substrate; a plurality of active elements connected to the group of electrodes; and an alignment film disposed on one of the first substrate and the second substrate, wherein the alignment film contains a polyimide and a precursor of the polyimide, each of which is formed from a diamine and an acid anhydride, and the diamine contains a first diamine having an acidic group and a second diamine having a nitrogen atom-containing functional group other than two amino groups. | 04-12-2012 |
20120196054 | LIQUID CRYSTAL DISPLAY AND MANUFACTURING METHOD THEREOF - A liquid crystal display including: a first substrate and a second substrate facing each other; an alignment layer disposed on one of the first substrate and the second substrate and including a vertical photo-alignment material which includes a first vertical functional group and a photo-reactive group, and a major alignment material which does not include the photo-reactive group; and a liquid crystal layer disposed between the first substrate and the second substrate, wherein a ratio of a molar concentration of the vertical photo-alignment material to the molar concentration of the major alignment material increases in a direction towards a surface of the alignment layer adjacent to the liquid crystal layer. | 08-02-2012 |
20140023798 | LIQUID CRYSTAL ALIGNING AGENT AND LIQUID CRYSTAL DISPLAY DEVICE EMPLOYING IT - To provide a liquid crystal aligning agent useful to obtain a liquid crystal alignment film excellent in liquid crystal alignment properties, alignment controlling power and rubbing resistance, having high voltage retention characteristics and having reduced charge accumulation, and a liquid crystal display device which is less susceptible to display failure, to lowering of contrast or to image persistence. | 01-23-2014 |
20140072730 | Photoalignment Polyimide Copolymer and Liquid Crystal Alignment Layer - Disclosed therein are a photoalignment polyimide copolymer making it easier to form a liquid crystal alignment layer with excellences in alignment properties, thermal and structural stabilities, and adhesiveness to a substrate, and a liquid crystal alignment layer using the same. The photoalignment polyimide copolymer includes all the three types of repeating units each having a defined structure. | 03-13-2014 |
20150064366 | ORIENTATION FILM MATERIALS AND LIQUID CRYSTAL DISPLAY DEVICE USING IT - The long residual image characteristic of a conventional photo-orientation film material is insufficient. A liquid crystal display device comprises substrates, a liquid crystal layer, an electrode group to apply an electric field to the liquid crystal layer, and orientation control films placed between the substrates and the liquid crystal layer. Each of the orientation control films comprises a polyimide and a polyimide precursor, as materials of the polyimide and the polyimide precursor, at least one kind of first diamines, at least one kind of second diamines, and a cyclobutane tetracarboxylic dianhydride derivative are contained, and an orientation restraining force is granted by the irradiation of nearly linearly polarized light. | 03-05-2015 |
20160152772 | Alignment Film, Method for Preparing the Same and Liquid Crystal Display Device Comprising the Same | 06-02-2016 |
20190144607 | LIQUID CRYSTAL DISPLAY DEVICE | 05-16-2019 |
428100270 | Polyimidfluoride | 1 |
20140248445 | LIQUID CRYSTAL DISPLAY AND METHOD FOR MANUFACTURING SAME - A liquid crystal display is provided which is capable of reducing the occurrence of defective display due to variations in the initial alignment direction of a liquid crystal alignment control film in a liquid crystal display of an IPS scheme, realizing the stable liquid crystal alignment, providing excellent mass productivity, and having high image quality with a higher contrast ratio. The liquid crystal display has a liquid crystal layer disposed between a pair of substrates, at least one of the substrates being transparent, and an alignment control film formed between the liquid crystal layer and the substrate. At least one of the alignment control films | 09-04-2014 |