Patents by Inventor Pavel I. Lazarev
Pavel I. Lazarev has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7450194Abstract: A polarized interference recycling backlight module for generating light with a single polarization state, which reduces the optical loss in light beam output, is suitable for mass production, and decreases manufacturing costs, is disclosed. The backlight is easily integrated with conventional electro-optical display devices and achieves high-quality polarization. The polarized interference recycling backlight module according to the present invention comprises an optical cavity and interference polar (I-Polar) composed of stacked layers. At least one layer of said I-Polar is optically anisotropic and is made by means of Cascade Crystallization Process, is characterized by a globally ordered biaxial crystalline structure with an intermolecular spacing of 3.4±0.3 ? in the direction of one of optical axes, is transparent in the visible spectral range, and is formed by rodlike supramolecules representing at least one polycyclic organic compound with a conjugated ?-system and ionogenic groups.Type: GrantFiled: October 1, 2004Date of Patent: November 11, 2008Assignee: Nitto Denko CorporationInventor: Pavel I. Lazarev
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Patent number: 7411715Abstract: A method of fabrication of an electrooptical device comprises depositing a colloid system of anisometric particles onto at least one electrode and/or onto at least one substrate and/or onto at least one layer of an isotropic or anisotropic material to form at least one layer of an electrooptical material, externally aligning the colloid system to form a preferred alignment of the colloid system particles, drying the colloid system, and forming at least one electrode and/or at least one layer of an isotropic or anisotropic material on at least a portion of the layer of the electrooptical material.Type: GrantFiled: May 15, 2006Date of Patent: August 12, 2008Assignee: Nitto Denko CorporationInventors: Pavel I. Lazarev, Michael V. Paukshto, Vladimir Sulimov
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Patent number: 7324181Abstract: The present invention relates to the field of color filters, in particular, to a non-absorbing polarization color filters and to high-brightness color liquid crystal display panel with improved image contrast employing non-absorbing polarization color filters and light recycling among neighboring subpixels. The disclosed invention represents a non-absorbing polarization color filter comprising the following elements: a rear broadband multilayer lossless polarizer, a front broadband multilayer lossless polarizer, and a color polarization rotator. The rear broadband multilayer lossless polarizer has a predefined-oriented transmission axis AB. Said front broadband multilayer lossless polarizer is located approximately in parallel with the rear broadband multilayer lossless polarizer, and has a transmission axis approximately parallel or approximately orthogonal with respect to transmission axis AB.Type: GrantFiled: April 7, 2005Date of Patent: January 29, 2008Assignee: Nitto Denko CorporationInventors: Pavel I. Lazarev, Michael V. Paukshto, Louis D. Silverstein, Pochi Yeh
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Patent number: 7317499Abstract: A multilayer plate is provided comprising an optically transparent substrate, a protective layer, a conducting layer, and at least one anisotropic thin crystal film. The anisotropic thin crystal film is made of a substance containing aromatic rings and possessing a structure with an interplanar spacing of 3.4±0.2 ? along one of optical axes. The thin crystal film is situated between the substrate and the conducting layer and is separated from the conducting layer by the protective layer. The transmission of the multilayer plate for UV radiation does not exceed 1% at any wavelength below 380 nm.Type: GrantFiled: April 4, 2003Date of Patent: January 8, 2008Assignee: Nitto Denko CorporationInventors: Michael V. Paukshto, Pavel I. Lazarev
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Patent number: 7297209Abstract: A method of forming an anisotropic crystal film, comprising providing a donor which comprises a base and an anisotropic crystal film bounded to the base, and a receptor. At least a portion of the anisotropic crystal film is placed in contact with the receptor. A loading is applied to at least a portion of the base, whereby providing shear and compressive stresses onto the donor and receptor, and transferring at least a portion of the anisotropic crystal film onto the receptor and delaminating the at least portion of the anisotropic crystal film from the base.Type: GrantFiled: December 18, 2003Date of Patent: November 20, 2007Assignee: Nitto Denko CorporationInventors: Pavel I. Lazarev, Michael V. Paukshto
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Patent number: 7291223Abstract: The present invention relates to layered organic structures in which anisotropic crystalline seed layers control crystalline structure of the subsequent epitaxial organic layers. The structure comprises in sequence a substrate, a globally ordered crystalline seed layer with intermolecular spacing of 3.4±0.3 ?, and at least one epitaxial layer of an organic compound. The seed layer is comprised of disc-shaped molecules of at least one polycyclic organic compound with conjugated ?-system. At least one layer of an organic compound is epitaxially deposited onto the seed layer. The present invention also provides a method for obtaining a layered organic structure. The method comprises forming of a globally ordered anisotropic crystalline seed layer on a substrate by means of the Cascade Crystallization Process. The seed layer has an intermolecular spacing of 3.4±0.3 ? and it is formed by rodlike supramolecules comprised of disc-shaped molecules of at least one polycyclic organic compound with conjugated ?-system.Type: GrantFiled: September 21, 2004Date of Patent: November 6, 2007Assignee: Nitto Denko CorporationInventor: Pavel I. Lazarev
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Patent number: 7267849Abstract: A compensator element for a liquid crystal display is provided comprising at least one layer of negative biaxial burefringement material formed by at least one polycyclic organic compound.Type: GrantFiled: March 1, 2005Date of Patent: September 11, 2007Assignee: Nitto Denko CorporationInventors: Pavel I. Lazarev, Mikhail V. Paukshto
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Patent number: 7211824Abstract: The present invention relates to organic semiconductor diodes, in particular, to the diodes with nonlinear current-voltage characteristics, which are used for power switching, rectifying variable signals, and frequency mixing. The organic semiconductor diode with the p-n junction comprises an anode, cathode, a hole transport layer in contact with the anode, and an electron transport layer in contact with the cathode, and two transport layers being in contact with each other. Another aspect of the present invention is a Schottky barrier diode comprising anode, cathode, and an organic semiconductor layer, wherein the semiconductor layer is either hole or electron transport layer. At least one of the transport layers is characterized by a globally ordered crystalline structure with intermolecular spacing of 3.4±0.3 ? in the direction of one crystal axis. One more aspect of the present invention is a method for obtaining an organic semiconductor layer with the electron-hole type of conductivity.Type: GrantFiled: September 27, 2004Date of Patent: May 1, 2007Assignee: Nitto Denko CorporationInventor: Pavel I. Lazarev
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Patent number: 7204938Abstract: An optically anisotropic film based on a two-phase polymeric material, and a method for the fabrication is provided. The two-phase polymeric material comprises a polymer matrix and a partially crystalline film of ordered, immobilized, organic molecules. The polymer matrix provides desired mechanical properties while the crystalline film provides desired optical properties of the fabricated material.Type: GrantFiled: October 24, 2003Date of Patent: April 17, 2007Assignee: Nitto Denko CorporationInventor: Pavel I. Lazarev
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Patent number: 7166161Abstract: The present invention relates to an anisotropic films and method for obtaining the same. The film comprises substrate and at least one modified conjugated aromatic crystalline layer deposited onto said substrate. The said layer is characterized by globally ordered crystalline structure with intermolecular spacing of 3.4±0.3 ? along one of optical axes. The modified conjugated aromatic crystalline layer is formed by rodlike supramolecules, which comprise at least one polycyclic organic compound with conjugated ?-system. At least part of the modified conjugated aromatic crystalline layer has electric conductivity and is slightly soluble or insoluble in polar solvents. The films are useful in optical applications, such as polarizers and retarders, and in electronic and light emitting devices, such as fiber optics modulators and switches, solar cells, charge-coupled device (CCD), thin film transistor integrated circuits, light emitting diodes, and light emitting displays.Type: GrantFiled: October 14, 2003Date of Patent: January 23, 2007Assignee: Nitto Denko CorporationInventors: Pavel I. Lazarev, Victor V. Nazarov
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Patent number: 7132138Abstract: The LC information display contains a layer of liquid crystal situated between the front and the rear panels with functional layers, and the liquid crystal has parameters providing interference maximum or minimum of transmission or reflection at the exit of the display and/or at the boundary of at least two functional layers and/or between the LC layer and a functional layer, for at least one linearly polarized component of light, and for at least one wavelength. The disclosed invention allows optimizing transmission of light through optically anisotropic functional layers of the display, which leads to substantial increase of its effectiveness.Type: GrantFiled: December 4, 2001Date of Patent: November 7, 2006Assignee: Nitto Denko CorporationInventor: Pavel I. Lazarev
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Patent number: 7113337Abstract: Anisotropic multilayer thin-film coating that may be used in fabrication of various optical elements, such as polarizers, beam splitters, interference-polarizing light filters, polarizing mirrors, etc. The invention is aimed at creating a multilayer optically anisotropic structure, which contains at least one layer with high degree of anisotropy and perfect structure, whereas refraction indexes and thicknesses of all layers and their combination is selected according to the known law, determined by the purpose of the structure, such as to provide an interference extremum for at least one polarization of light. The technical result is the increase of effectiveness of transforming incident radiation, which corresponds to the functional purpose of the multilayer optically anisotropic structure, due to the high reproducible degree of amsotropy of at least one layer in the structure.Type: GrantFiled: July 10, 2002Date of Patent: September 26, 2006Assignee: Nitto Denko CorporationInventors: Pavel I. Lazarev, Michael V. Paukshto
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Patent number: 7053970Abstract: The invention pertains to devices for presenting information, in particular liquid crystal (LC) displays and may be used in indicatory technology of various purposes. Liquid crystal display, according to the invention, comprises a layer of liquid crystal, situated between two plates, on each of which there have been placed or formed electrodes and at least one polarizer layer, while the electrodes on at least one of the plates are made transparent, and at least one layer of at least one polarizer formed on the inner side of the transparent electrodes on at least one of the plates in the display is the E-type polarizer and made out of at least partially crystalline film of molecularly ordered structure of an organic dye. Situated above the transparent electrodes, local areas of at least one layer of E-type polarizer, formed on the inner side of the transparent electrodes, are modified to enhance their conductivity.Type: GrantFiled: July 26, 2002Date of Patent: May 30, 2006Assignee: Nitto Denko CorporationInventor: Pavel I. Lazarev
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Patent number: 7042612Abstract: An electrooptical device is provided comprising at least one substrate, at least one pair of electrodes and at least one layer of an electrooptical material. The electrooptical material represents an optically anisotropic thin crystal film and contains molecules having aromatic rings and possessing a lattice with an interplanar spacing (Bragg's reflection) of 3.4±0.2 ? along one of optical axes. The electrooptical material has anisotropic refractive indices and/or anisotropic absorption coefficients that are depended on an electric field strength.Type: GrantFiled: November 15, 2002Date of Patent: May 9, 2006Assignee: Nitto Denko CorporationInventors: Pavel I. Lazarev, Michael V. Paukshto, Vladimir Sulimov
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Patent number: 7031053Abstract: The invention pertains to thermo-resistant and light-resistant dichroic polarizers based on thin films of dichroic matters, in particular organic dyestuffs, in which molecules are ordered in a crystalline structure and applied on the surface of the substrate. The dichroic polarizer is characterized by the fact that it contains at least one anisotropically absorbing film comprised of oriented molecules.Type: GrantFiled: February 23, 2001Date of Patent: April 18, 2006Assignee: Nitto Denko CorporationInventors: Yuri A. Bobrov, Leonid Y. Ignatov, Pavel I. Lazarev, Alla Y. Sakharova
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Patent number: 6913783Abstract: The invention pertains to methods of obtaining anisotropic crystalline films and to devices for carrying out the methods. A colloidal system with anisometric particles is applied as a film onto the surface of a substrate while the viscosity of the colloidal system is lowered. The particles of the colloidal system with lowered viscosity are oriented and the original viscosity of the colloidal system is restored. The film is then dried. The drying is carried out under controlled conditions. Zones of the dried film may be progressively heated to improve the film characteristics.Type: GrantFiled: February 6, 2002Date of Patent: July 5, 2005Assignee: Optiva, Inc.Inventors: Pavel I. Lazarev, Victor V. Nazarov, Natalya A. Ovchinnikova
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Patent number: 6876806Abstract: Optical waveguides of the type which include a light-transmitting core and a cladding layer on said core. The optical waveguide can be planar or cylindrical such as an optical fiber. The optical waveguide is provided with an additional coating of highly biaxial or uniaxial crystalline material with different refraction indices in different directions.Type: GrantFiled: May 18, 2001Date of Patent: April 5, 2005Assignee: Optiva, Inc.Inventors: Pavel I. Lazarev, Michael V. Paukshto
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Patent number: 6848897Abstract: This invention pertains to technology of fabricating thin films featuring anisotropic properties such as: optical, magnetic, electric conductivity and others. In particular, this invention is related to devices for obtaining polarizing films from liquid-crystalline solutions of organic materials, for example organic dyes. The disclosed method and device permits the fabrication of anisotropic films from liquid-crystalline solution with high characteristics and high degree of perfection of the oriented structure with significant reproducibility of results. The device makes use of a mechanical element for receiving and guiding the liquid crystal solution onto a substrate and then providing an orienting action to the kinetic elements as they are delivered.Type: GrantFiled: January 8, 2002Date of Patent: February 1, 2005Assignee: Optiva, Inc.Inventors: Pavel I. Lazarev, Michael V. Paukshto
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Patent number: 6847420Abstract: A liquid crystal display is provided which comprises front and rear panels, and electrodes, polarizers and a layer of liquid crystal disposed between the front and rear panels. The polarizer on the rear panel is preferably a reflecting type in at least one region of the spectrum and contains at least one element in the form of a multilayer structure. The multilayer structure contains at least two anisotropic layers separated by at least one intermediate layer which is optically transparent in the desired spectral region. The ratio of refraction indices and thickness of the layers in the multilayer structure is chosen such to provide an extremum for the ratio of the transmitted and reflected polarized light in the spectral region.Type: GrantFiled: September 10, 2002Date of Patent: January 25, 2005Assignee: Optiva, Inc.Inventors: Pavel I. Lazarev, Michael V. Paukshto, Ma Yao-Dong
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Patent number: 6841320Abstract: The invention pertains to the field of fabrication of devices of various purposes, which use anisotropic films: polarizers, retarders, etc., as well as technology of obtaining coatings with anisotropy of electric conductivity, magnetic properties, thermal conduction and other physical properties. The invention includes the method of forming anisotropic crystal film on a receptor plate via transferring it from the donor plate Implementing the disclosed invention preserves the high degree of anisotropy and optical parameters of crystal films after the transfer. Additionally, it is possible to form anisotropic coatings on the surface of any configuration (including curved) and different degree of roughness; also, it is possible to transfer films of various sizes and configurations as well as multilayer coatings containing anisotropic film and form color images.Type: GrantFiled: February 4, 2003Date of Patent: January 11, 2005Assignee: Optiva, Inc.Inventors: Pavel I. Lazarev, Natalya A. Ovchinnikova