| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 349194000 | Passive liquid crystal polarizer | 28 |
| 20130044286 | OPTICAL FILM - An optical film, a circular polarizing plate, and a display device are provided. The optical film may exhibit a desired phase retardation property in a wide wavelength range even when it is relatively thin. The optical film may exhibit the 1/4 wavelength phase retardation property. The optical film may be manufactured by a simple process. The optical film may be used in LCDs such as a reflective LCD, or OLEDs. | 02-21-2013 |
| 20130077040 | LOW-TWIST CHIRAL OPTICAL LAYERS AND RELATED FABRICATION METHODS - An optical element includes a first and second stacked birefringent layers. The first birefringent layer includes local anisotropy patterns having respective relative orientations that vary over a first thickness between opposing faces of the first birefringent layer to define a first twist angle. The second birefringent layer includes local anisotropy patterns having respective relative orientations that vary over a second thickness between opposing faces of the second birefringent layer to define a second twist angle different than the first twist angle. Related devices and fabrication methods are also discussed. | 03-28-2013 |
| 20100110363 | POLARIZATION GRATINGS IN MESOGENIC FILMS - A polarizer including a polarization grating comprising a polarization sensitive photo-alignment layer and a liquid crystal composition arranged on said photo-alignment layer. An alignment pattern, corresponding to the polarization pattern of a hologram, is recorded in the photo-alignment layer, and the liquid crystal composition is aligned on the photo-alignment layer. | 05-06-2010 |
| 20130093992 | OPTICAL FILM, POLARIZING PLATE AND IMAGE DISPLAY DEVICE - To provide an optical film, which may be used as a λ/4 plate and may provide a display device which has specific optical characteristics, may be manufactured with high productivity and has an excellent 3D-display performance. To provide a 3D-display device having a physical properties having excellent antireflective property and light fastness with high productivity. An optical film having at least one optically anisotropic layer, wherein an in-plane retardation. Re at an arbitrary wavelength in a visible light region is 80 nm to 201 nm, an Nz value represented by the following equation is 0.1 to 0.9, and when the in-plane retardations at wavelengths of 450 nm, 550 nm and 650 nm are referred to as Re450, Re550 and Re650, respectively, Re450/Re550 is 1.18 or less and Re650/Re550 is 0.93 or more. | 04-18-2013 |
| 20110299025 | OPTICAL CONTROL DEVICES AND METHODS OF MAKING - Herein are disclosed methods by which a layer of oriented chromonic material may be transferred from a flexible substrate to a receiving substrate, so as to form a subassembly for use in the assembly of liquid crystal cells. The oriented chromonic material layer may function as an alignment layer for aligning liquid crystal material, and may also incorporate a pleochroic dye so to function as a polarizing layer. An oriented chromonic material layer of relatively large area can be transferred, which enables the production of relatively large liquid crystal cells for use in, e.g., autodarkening filters such as used for eye protection in welding operations. Curved liquid crystal cells are also disclosed. | 12-08-2011 |
| 20100039608 | LIQUID CRYSTAL COATING SOLUTION, AND POLARIZING FILM - A liquid crystalline coating solution which comprises: an azo compound represented by the following general formula (1); and a solvent to dissolve the azo compound: | 02-18-2010 |
| 20100118256 | OPTICAL ELEMENT - A component has a substrate ( | 05-13-2010 |
| 20100128216 | LIQUID-CRYSTALLINE COATING FLUID AND POLARIZING FILM - A liquid-crystalline coating fluid comprises: a lyotropic liquid crystal compound; a vinyl alcohol-based polymer; and a solvent, wherein 0.05 to 1.5 weight parts of vinyl alcohol-based polymer is contained with respect to 100 weight parts of the lyotropic liquid-crystal compound. | 05-27-2010 |
| 20090262297 | PRODUCTION METHOD FOR BIREFRINGENT FILM, BIREFRINGENT FILM, AND LAMINATE - Provided is a production method for a thin birefringent film with a satisfactory alignment property, in which a refractive index is controlled three-dimensionally and optical properties are unlikely to decrease in the case where the birefringent film is placed under high temperature and high humidity. The production method for a birefringent film of the present invention includes: the step (1) of preparing a solution that exhibits a nematic liquid crystal phase, containing at least one kind of polycyclic compound containing a —SO | 10-22-2009 |
| 20080278674 | METHOD FOR FABRICATING REFLECTIVE OPTICAL FILM AND REFLECTIVE POLARIZING FILM AND METHOD FOR FABRICATING THE SAME - A method for fabricating a reflective optical film is provided. A substrate is first provided. Next, a phase retardation film is formed on at least one side of the substrate by means of coating. Afterward, a cholesteric liquid crystal (CLC) layer is formed on the phase retardation film by means of coating. Hence, the conventional external bond fabrication process can be simplified. Further, the undesired optical results caused by the more disordered alignment in the upper layer of CLC being more disordered compared to that in the lower layer of CLC and the failure to display the compensation effect can be overcome. | 11-13-2008 |
| 20080278673 | Polarizer, Polarizing Plate Optical Film and Image Display - A polarizer of the invention comprises: a film that has a structure having at least two types of minute domains dispersed in a matrix formed of an optically-transparent water-soluble resin, wherein at least one of the minute domains is formed of a liquid-crystalline birefringent material, and at least one of the other type or types of the minute domains is formed of a polyvinyl alcohol resin material containing a dichroic light-absorbing material that does not lose its dichroism within the liquid crystal temperature range of the liquid-crystalline birefringent material. The polarizer has good heat resistance and a high polarization degree and a high transmittance such that unevenness in transmittance can be suppressed when black viewing is displayed. | 11-13-2008 |
| 20090257017 | METHOD OF PRODUCING POLARIZING PLATE WITH OPTICAL COMPENSATION LAYER AND IMAGE DISPLAY APPARATUS USING POLARIZING PLATE WITH OPTICAL COMPENSATION LAYER - There are provided a method of producing a polarizing plate with an optical compensation layer having excellent adhesiveness between a polarizer-protective film and a polarizer without deterioration of the optical compensation layer. The method of producing a polarizing plate with an optical compensation layer includes: laminating an optical compensation layer on one side of a polarizer-protective film via a photo-curing adhesive layer; irradiating UV light toward the other side of the polarizer-protective film by a metal halide lamp or an ultrahigh pressure mercury lamp; and laminating a polarizer on the side of the polarizer-protective film on which the optical compensation layer is not formed. | 10-15-2009 |
| 20120105795 | LIQUID-CRYSTALLINE COATING SOLUTION AND POLARIZING FILM - It is possible to obtain a polarizing film having a high dichroic ratio by using a liquid-crystalline coating solution in which a small quantity of a second lyotropic liquid-crystalline low-molecular compound is mixed with a first lyotropic liquid-crystalline low-molecular compound. The second lyotropic liquid-crystalline low-molecular compound has a mole number smaller than the first lyotropic liquid-crystalline low-molecular compound. The molecular size of the second lyotropic liquid-crystalline low-molecular compound is smaller than that of the first lyotropic liquid-crystalline low-molecular compound. | 05-03-2012 |
| 20080231793 | Methods for Manufacturing Polarizers, Polarizing Plates and Laminated Optical Films, and Polarizers, Polarizing Plates, Laminated Optical Films, and Image Displays - A method for manufacturing a polarizer of the invention, wherein the polarizer comprises a film that comprises: a matrix made of an optically-transparent resin containing a dichroic absorbing material; and minute domains that are made of an energy ray-curable birefringent material having liquid crystalline properties and are aligned and dispersed in the matrix; and comprising a process of applying energy rays for fixing the alignment of the birefringent material having liquid crystalline properties. A polarizer obtained by the method has a high transmittance and a high polarization degree, and being able to control unevenness of the transmittance in the case of black viewing. | 09-25-2008 |
| 20120242949 | MANUFACTURING METHODS OF PHASE RETARDATION FILM AND STEREOSCOPIC DISPLAY DEVICE, AND PHASE RETARDATION FILM - A manufacturing method of a phase retarding film, a manufacturing method of a stereoscopic display apparatus, and a phase retarding film are provided. A light transmissive substrate is provided. An alignment layer is formed on the light-transmissive substrate. The alignment layer is aligned. A birefringent material film is formed on the alignment layer. A reaction-causing light is used to expose a first patterned region of the birefringent material film to induce a reaction on the first patterned region, wherein a second patterned region of the biregringent material film is not exposed to the reaction-causing light. The second patterned region of the biregringent material film is removed. | 09-27-2012 |
| 20100053538 | STRUCTURE OF POLARIZING TERAHERTZ WAVE DEVICE - The Terahertz Polarizer structure of the present invention comprises of: A pair of parallel quartz layers for forming a rectangular cube with internal space, then a birefringent liquid crystal is placed in the internal space and sealed, and a pair of permanent magnets with reverse polarities are placed at both sides of the pair of fused silica layers. | 03-04-2010 |
| 20080291389 | Elliptically Polarizing Plate and Image Display Apparatus Using the Same - Provided is a very thin elliptically polarizing plate having broadband and wide viewing angle, a simple method of producing the same, and an image display apparatus using the elliptically polarizing plate. An elliptically polarizing plate of the present invention includes a polarizer, a protective layer formed on one side of the polarizer, a first birefringent layer serving as a λ/2 plate, and a second birefringent layer serving as a λ/4 plate in the stated order. In the plate, an absorption axis of the polarizer and a slow axis of the first birefringent layer form an angle α of one of 10° to 20° and −10° to −20°, and the absorption axis of the polarizer and a slow axis of the second birefringent layer form an angle β of one of 65° to 85° and 5° to 25°. | 11-27-2008 |
| 20100321627 | WAVELENGTH SELECTIVE OPTICAL ROTATOR AND OPTICAL HEAD DEVICE - A wavelength selective optical rotator includes a liquid crystal layer including a cholesteric-phase liquid crystal, wherein: when a first linearly polarized light having a wavelength λ | 12-23-2010 |
| 20120229752 | DISPLAY SCREEN AND ELECTRONIC DEVICE USING SAME - A display screen includes a substrate comprising a first surface and a second surface opposite to the first surface; a beam-splitting polarizer formed on a first surface of the substrate; and a non-conductive metal layer formed on a second surface of the substrate. The beam-splitting polarizer is a cholesterol liquid crystalline polarization layer. | 09-13-2012 |
| 20120147315 | Brightness and color enhancement film for LED TV and monitor - The present invention relates to an optical enhancement film, more specifically, to a cholesteric reflective polarizer film, which is characterized by matching and compensating the emitting spectrum of a white LED backlight for LCD TVs and Monitors. The film not only enhances the brightness of the LED-backlit displays by light recycling effect but also increases the color rendering quality of the LED-backlit displays by phase balancing effect. | 06-14-2012 |
| 20100110361 | LIQUID CRYSTALLINE COATING SOLUTION AND POLARIZING FILM - A liquid crystalline coating solution which comprises: an azo compound represented by the following general formula (I); and a solvent to dissolve the azo compound: | 05-06-2010 |
| 20100110362 | Birefringent Polymer Film with Negative Optical Dispersion - The invention relates to a polymer film having negative optical dispersion, novel polymerisable compounds and liquid crystal (LC) materials for its preparation, and the use of the polymer film and novel compounds and materials in optical, electrooptical, electronic, semiconducting or luminescent components or devices. | 05-06-2010 |
| 20120113380 | NEGATIVE DISPERSION RETARDATION PLATE AND ACHROMATIC CIRCULAR POLARIZER - The present invention relates generally to the field of organic chemistry and particularly to the nematic lyotropic liquid crystal solution and negative dispersion retardation plate for application in 3D liquid crystal displays. The negative dispersion retardation plate comprises a substrate, and at least one optically anisotropic retardation layer comprising a multi-component guest-host composition coated onto the substrate. | 05-10-2012 |
| 20120062829 | LIQUID-CRYSTAL COATING FLUID AND POLARIZING FILM - A liquid-crystal coating fluid which comprises: an azo compound represented by the following general formula (1); and a solvent to dissolve the azo compound: | 03-15-2012 |
| 20120075568 | OPTICAL FILM - An optical film, a reflective polarizing plate and a display device are provided. For example, the optical film may be used in the reflective polarizing plate which may enhance the efficiency of light utilization of a display device such as a liquid crystal display device and improve the brightness. | 03-29-2012 |
| 20120314180 | POLARIZATION CONVERSION ELEMENT - A polarization conversion element includes a phase reversal element and a polarization plane rotation element including a liquid crystal layer. The liquid crystal layer has a plurality of regions disposed along circumferential direction with the intersection point of the polarization lane rotation element and the optical axis as the center with alignment directions different from each other. When electric voltage in accordance with the wavelength of linear polarization incident on the polarization plane rotation element is applied, each region rotates the polarization plane of the polarization component transmitted by each region, and thereby converts linear polarization to radial polarization. The phase reversal element reverses, among the first and the second annular portions alternately disposed along the radial direction with the optical axis as the center, the phase of light incident on the first annular portion relative to the phase of light incident on the second annular portion. | 12-13-2012 |
| 20120140161 | POLYMER FILM, RETARDATION FILM, POLARIZING PLATE, LIQUID CRYSTAL DISPLAY DEVICE AND ULTRAVIOLET ABSORBER - A polymer film, containing a merocyanine compound having λ | 06-07-2012 |
| 20110157540 | POLARIZER AND ORGANIC LIGHT-EMITTING DISPLAY DEVICE INCLUDING THE SAME - Provided are a polarizer and an organic light-emitting display device including the same. The organic light-emitting display device may be protected by enabling the polarizer to effectively absorb external impact. | 06-30-2011 |
