Liquid Crystal For Recording Or Imaging On Photosensitive Medium Patents (Class 349/2)
  • Patent number: 8149495
    Abstract: A reflective display, comprising a plurality of pixels (10), each having a first electrode, a light-modifying layer (12), and a second electrode (3; 16) arranged to enable formation of an electric field in the light-modifying layer (12) through application of a voltage between the electrodes. The pixel (10) further includes an active portion (16) which is switchable between light-modifying states by means of said electric field, and an inactive portion (17). The inactive portion (17) is arranged for reflecting light so as to direct at least a fraction of incoming light (20) impinging on the inactive portion (17) towards the active portion (16). As a result, a contrast ratio of the reflective display is improved, since light is now directed from the inactive portion towards the active portion and thus contributes to the displayed image as observed by a viewer.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: April 3, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Sander Jurgen Roosendaal, Martinus Hermanus Wilhelmus Maria Van Delden
  • Publication number: 20120062845
    Abstract: The present invention comprises a system for and method of frequency prefiltering comprising a camera shutter capable of continuously variable illumination during a single exposure of the sensor. The shutter comprises a continuously variable exposure effector which in disposed in an image path, either in front of a lens or between a lens and a sensor. The system for frequency prefiltering further comprises a synchronization cable that synchronizes a drive system with a sensor or with film. The shutter further comprises a postfilter. The postfilter comprises a digital finite impulse response convolutional filter.
    Type: Application
    Filed: May 6, 2011
    Publication date: March 15, 2012
    Applicant: TESSIVE LLC
    Inventors: Anthony Wayne Davis, John Rodrigue Kouns
  • Patent number: 8107022
    Abstract: An LCD having pixels arrayed along a first direction and a second direction crossing the first direction includes: opposite first and second substrates having facing first and second surfaces, respectively; a first light shielding layer formed along the second direction between the pixels adjacent in the first direction on the first surface; a first electrode formed within each pixel on the second surface and having a first electrode portion; a second electrode positioned between the pixels adjacent in the first direction on the second surface to at least partially overlap the first light shielding layer in plan view and having a second electrode portion extending along the first electrode portion; a third electrode having a third electrode portion formed along the first direction between the pixels adjacent in the second direction on the second surface.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: January 31, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Tomo Ikebe
  • Publication number: 20120007487
    Abstract: In one embodiment, a display element includes a first electrode, a second electrode, and a dielectric layer on the second electrode. The dielectric layer has recess regions therein. The display element includes an opaque layer on the second electrode within each recess region and a fluid with colorant particles between the first electrode and the second electrode.
    Type: Application
    Filed: July 6, 2010
    Publication date: January 12, 2012
    Inventors: Jeffrey Todd Mabeck, Niranjan Thirukkovalur
  • Publication number: 20110304782
    Abstract: A phase-type diffraction device includes a substrate having a front surface and a solidified liquid crystal layer formed on the front surface of the substrate and constituted by a continuous film containing at least a liquid crystal compound. The solidified liquid crystal layer is constituted by first, second and third regions arranged periodically, the third region being interposed between the first region and the second region. The first region is optically anisotropic and the second region is optically isotropic, the third region is not optically isotropic, a degree of orientation of mesogens of the liquid crystal compound being lower than that of the first region. An in-plane average refractive index ni of the second region is different from an in-plane average refractive index na of the first region and an in-plane average refractive index nm of the third region is between ni and na.
    Type: Application
    Filed: August 18, 2011
    Publication date: December 15, 2011
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Sosuke Akao, Takeshi Itoi
  • Patent number: 8039064
    Abstract: A compound having a good durability against light and capable of producing desired liquid crystallinity after polymerization, and a polymerizable liquid crystal composition containing such a compound, are provided. Further, an optical element having a good durability against light, and an optical information writing/reading device employing such an element, are provided. A compound represented by CH2?CR1—COO—R2-Cy-Ph-R3—OCO—CR4?CH2. R1 and R4 are each preferably a hydrogen atom. R3 is preferably a C1-6 alkylene group wherein an oxygen atom is present or not present at an end of the group to be bonded to a cyclic group, and wherein some or all of hydrogen atoms bonded to carbon atoms in the group may be substituted by fluorine atoms; or an alkylene group wherein an oxygen atom is present at an end of the group to be bonded to a cyclic group.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: October 18, 2011
    Assignee: Asahi Glass Company, Limited
    Inventors: Nobuhiko Takeshita, Teppei Konishi, Hiroshi Kumai
  • Patent number: 8023176
    Abstract: The present invention provides a multicolor display optical composition comprising a dispersion medium, a periodic structure having a porous structure inside communicated with the outside, and mobile particles contained in the dispersion medium so as to be movable and having a volume average primary particle diameter from 1 nm to 80 nm in a dispersion state in the dispersion medium, a volume average particle diameter of coagulated particles of 100 nm or larger in optical coagulation state by stimulation application, and having a refractive index different from that of the dispersion medium by 0.1 or more, wherein the mobile particles show no coloration in the dispersion state when the particles are dispersed in the dispersion medium and show white coloration with a predetermined whiteness value or higher in the coagulation state when the particles are coagulated, an optical device, and a display method of the optical device.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: September 20, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Ryojiro Akashi, Daisuke Nakayama
  • Patent number: 8012385
    Abstract: The present invention relates to a liquid crystal display (LCD) device, and more particularly, to a method of fabricating a color filter for an LCD device. A method of fabricating a color filter uses a mold (PDMS mold) having a plurality of grooves. Particularly, the mold (PDMS mold) is attached to a substrate such that the plurality of grooves face into the substrate. When a color resin is dropped into a side opening of each groove, the color resin is injected into each groove of the mold (PDMS mold) by a capillary force. After the mold (PDMS mold) having the injected color resin is cured, the mold (PDMS mold) is detached from the substrate and a color filter pattern is formed at a desired position.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: September 6, 2011
    Assignee: LG Display Co., Ltd.
    Inventor: Jin-Ook Kim
  • Patent number: 8007877
    Abstract: To provide a liquid crystal optical modulation element which is excellent in durability against blue laser and which can maintain the characteristics for a long period of time. A liquid crystal optical modulation element to modulate a laser beam having a wavelength of at most 500 nm, which comprises a layer of a polymer liquid crystal composition sandwiched between a pair of transparent substrates facing each other, characterized in that each of the pair of transparent substrates has an alignment film on the surface which faces the other transparent substrate, and the polymer liquid crystal composition is a polymer liquid crystal containing a hindered amine compound and a hindered phenol compound.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: August 30, 2011
    Assignee: Asahi Glass Company, Limited
    Inventors: Kara Yoshida, Yuriko Kaida, Hiromichi Nagayama, Hiroshi Kumai
  • Publication number: 20110181797
    Abstract: Liquid crystal optoelectronic devices are produced by fabricating a wafer-level component structure and affixing a plurality of discrete components to a surface structure prior to singulating the individual devices therefrom. After singulation, the individual devices include a portion of the wafer-level fabricated structure and at least of the discrete components. The wafer-level structure may include a liquid crystal and controlling electrodes, and the discrete components may include fixed lenses or image sensors. The discrete components may be located on either or both of two sides of the wafer-level structure. Multiple liquid crystal layers may be used to reduce nonuniformities in the interaction with light from different angles, and to control light of different polarizations. The liquid crystal devices may function as optoelectronic devices such as tunable lenses, shutters or diaphragms.
    Type: Application
    Filed: September 1, 2009
    Publication date: July 28, 2011
    Applicant: LENSVECTOR INC.
    Inventors: Tigran Galstian, Derek Alexandre Proudian, Behram Afshari, Michael J. Nystrom, Peter Clark
  • Publication number: 20110141341
    Abstract: A method for providing auto focus for camera module that is electrically tunable using liquid crystal optical element is provided. The liquid crystal optical element includes substrate layers, insulating layer, three electrodes, liquid crystal layer between the substrate layers, and voltages applied between electrodes to control the optical power of the liquid crystal layer. The liquid crystal layer is coupled onto a camera module for provide auto focus on object located between 10 cm to infinity, achieving a response time at most of about 600 milliseconds. Tuning for the predetermined focal length is provided for liquid crystal optical element when object is located between 10 cm to infinity.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 16, 2011
    Inventors: Yi-Shin Lin, Hung-Chun Lin, Hung-Wei Chen, Yao-Tzung Wang
  • Patent number: 7961261
    Abstract: An image forming apparatus comprises: a holding unit that holds a medium on which an image is formed by irradiation of image-bearing light, the medium having a liquid crystal layer, a photoconductor layer that changes a resistance in response to irradiation of light, and a pair of electrode layers provided in an opposing relation so as to sandwich the liquid crystal layer and photoconductor layer, with at least one of the pair of electrode layers being divided into stripe-shaped sub-electrode layers; an irradiating unit that irradiates the medium with image-bearing light linearly along a longitudinal direction of the sub-electrode layers; a transporting unit that transports the irradiating unit along the surface of the medium in a first or second direction; a power supply unit that applies a voltage between the sub-electrode layer and the electrode layer; and an optical shielding unit that shields the photoconductor layer.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: June 14, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Tsutomu Ishii, Naoki Hiji, Yasunori Saito, Masahiro Sato, Shigehiko Sasaki, Kyotaro Tomoda, Kimitake Hasuike
  • Patent number: 7948567
    Abstract: An optically writable display medium includes an optical switching element and a display element. The optical switching element includes a charge transport layer sandwiched between an upper charge generating layer and a lower charge generating layer. The display element includes a display layer having memory properties and is provided on the optical switching element. The absorption wavelength region of the upper charge generating layer and the absorption wavelength region of the lower charge generating layer are substantially different from each other.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: May 24, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hideo Kobayashi, Yasuhiro Yamaguchi, Tomozumi Uesaka, Mieko Seki, Hiroe Okuyama, Masaaki Araki
  • Patent number: 7920218
    Abstract: A recording device that includes an obtainment unit that obtains image information representing an image; and a voltage application unit that applies a voltage with a frequency according to the image information obtained by the obtainment unit, to a pair of electrodes equipped with a display medium, the display medium having a multi-layered liquid-crystal phase provided between the pair of electrodes, the multi-layered liquid-crystal phase having a first layer capable of assuming a specific alignment when the applied voltage is greater than or equal to a pre-set first voltage threshold, and a second layer capable of assuming a specific alignment when the applied voltage is greater than or equal to a second voltage threshold. An application of a voltage to the pair of electrodes effecting a first voltage component and a second voltage component applied to the first layer and the second layer, respectively.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: April 5, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Chisato Urano, Takashi Morikawa, Haruo Harada, Yasunori Okano, Taijyu Gan, Atsushi Hirano, Hiroshi Arisawa
  • Patent number: 7907249
    Abstract: A film exposer has a modulator which modulates light from a light source and projects it onto a light-sensitive film guided continuously past the modulator. The modulator comprises a two-dimensional arrangement of elements which each project a specific quantity of light onto the film. A pixel entering the projection area of the modulator of the film on one side integrates the light which is projected onto the pixel by elements arranged in a row in the transport direction of the film. The quantity of light integrated by the pixel depends on how many elements are switched on, that is to say project light onto the film, while the film passes through the projection area of the modulator. The total quantity of the light to be integrated can be adjusted for each pixel by appropriate control of the elements respectively lying in a row in the transport direction of the film.
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: March 15, 2011
    Assignee: GBVV Holdings S.A.R.L.
    Inventor: Klaus Anderle
  • Patent number: 7907238
    Abstract: An ultra-thin edge-type backlight unit allowing a local dimming driving and a scanning driving and using a low-cost light source, and a display device of excellent screen quality are provided. The backlight unit includes a light guide plate, a light source disposed in a side of the light guide plate and a reflective-type display panel disposed on an opposite side of a surface where a light radiated from the light source is extracted.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: March 15, 2011
    Assignee: Korea Electronics Technology Institute
    Inventors: Chul Jong Han, Jeong In Han
  • Patent number: 7903181
    Abstract: A recording device includes a first voltage application unit that applies a first voltage to a display layer; a second voltage application unit that applies a second voltage; a first irradiation unit that irradiates to the display layer first light synchronized with the application of the second voltage; a second irradiation unit that irradiates to the display layer a second light after the application of the second voltage is terminated, the second light having a third intensity if the second light is irradiated at an area corresponding to the first tone in the second liquid crystal layer, the second light not being irradiated if the second light is irradiated at an area corresponding to the second tone in the second liquid crystal layer.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: March 8, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Atsushi Hirano, Taijyu Gan, Haruo Harada, Takashi Morikawa, Chisato Urano, Yasunori Okano, Hiroshi Arisawa, Takeo Kakinuma, Chikara Manabe
  • Publication number: 20110051021
    Abstract: An optically intelligent image sensing device is provided. By applying different potentials across different electrode sections in the image sensing device, the electric field profiles of the corresponding liquid crystal layer sections bend the lights passing through the liquid crystal layer sections in a predetermined manner. In one embodiment, all of a certain color light entering the image sensing device can be bent towards a color filter for the specific color, thereby entering the light sensor for the specific color light. Accordingly, the optically intelligent image sensing device has improved optical efficiency. An arrangement for an array of different electrode and light sensing sections in the image sensing device is also provided as an example for how each electrode may be connected to the optically intelligent image sensing device control signals. An example using the present optically intelligent image sensing device to improve the optical efficiency of an image capturing device is also described.
    Type: Application
    Filed: December 28, 2009
    Publication date: March 3, 2011
    Applicant: SERIAL INNOVATIONS INDIA PRIVATE LIMITED
    Inventors: Vijay Mishra, Karthik Venkatraman
  • Publication number: 20110037910
    Abstract: To provide a liquid crystal optical modulation element which is excellent in durability against blue laser and which can maintain the characteristics for a long period of time. A liquid crystal optical modulation element to modulate a laser beam having a wavelength of at most 500 nm, which comprises a layer of a polymer liquid crystal composition sandwiched between a pair of transparent substrates facing each other, characterized in that each of the pair of transparent substrates has an alignment film on the surface which faces the other transparent substrate, and the polymer liquid crystal composition is a polymer liquid crystal containing a hindered amine compound and a hindered phenol compound.
    Type: Application
    Filed: October 22, 2010
    Publication date: February 17, 2011
    Applicant: Asahi Glass Company, Limited
    Inventors: Kara YOSHIDA, Yuriko Kaida, Hiromichi Nagayama, Hiroshi Kumai
  • Publication number: 20110019111
    Abstract: A display medium comprises: a pair of electrodes to which a voltage is applied; a cholesteric liquid crystal layer provided between the pair of electrodes, wherein an alignment state of the cholesteric liquid crystal layer changes depending on a strength of an electric field generated upon application of a voltage to the pair of electrodes; and an intervening layer provided in an area between a part of the cholesteric liquid crystal layer and one of the pair of electrodes such that a strength of an electric field generated in the part of the cholesteric liquid crystal layer upon application of a voltage to the pair of electrodes is different from a strength of an electric field generated in another part of the cholesteric liquid crystal layer.
    Type: Application
    Filed: March 22, 2010
    Publication date: January 27, 2011
    Applicant: Fuji Xerox Co., Ltd.
    Inventors: Takashi Morikawa, Haruo Harada, Taijyu Gan, Yasunori Okano, Atsushi Hirano, Chisato Urano, Chikara Manabe, Takeo Kakinuma, Hiroshi Arisawa
  • Publication number: 20100321595
    Abstract: An exemplary camera module, includes a lens group, an image sensor, and a liquid crystal module disposed between the lens group and the image sensor. The liquid crystal module includes a first glass substrate adjacent to the image sensor, an opposite second glass substrate, a plurality of liquid crystal molecules arranged between the first glass substrate and the second glass substrate, a first transparent electrode layer formed on the first glass substrate and facing the liquid crystal molecules, and a second transparent electrode layer formed on the second glass substrate and facing the liquid crystal molecules. The liquid crystal molecules are configured for adjusting light path of the light transmitting therethrough in response to an electric field between the first and second transparent electrode layers, thus adjusting depth of field of the camera module.
    Type: Application
    Filed: December 30, 2009
    Publication date: December 23, 2010
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Chi-Wei Chiu
  • Patent number: 7847289
    Abstract: An array substrate for a liquid crystal display device includes a substrate, a gate line over the substrate, a data line crossing the gate line to define a pixel region and including a transparent conductive layer and an opaque conductive layer, a data pad at one end of the data line and including a transparent conductive layer, a thin film transistor connected to the gate line and the data line and including a gate electrode, an active layer, an ohmic contact layer, a buffer metallic layer, a source electrode and a drain electrode, and a pixel electrode in the pixel region and connected to the thin film transistor, the pixel electrode including a transparent conductive layer.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: December 7, 2010
    Assignee: LG Display Co., Ltd
    Inventors: Hyo-Uk Kim, Byung-Chul Ahn, Byoung-Ho Lim
  • Publication number: 20100296011
    Abstract: A recording device includes a first voltage application unit that applies a first voltage to a display layer; a second voltage application unit that applies a second voltage; a first irradiation unit that irradiates to the display layer first light synchronized with the application of the second voltage; a second irradiation unit that irradiates to the display layer a second light after the application of the second voltage is terminated, the second light having a third intensity if the second light is irradiated at an area corresponding to the first tone in the second liquid crystal layer, the second light not being irradiated if the second light is irradiated at an area corresponding to the second tone in the second liquid crystal layer.
    Type: Application
    Filed: March 15, 2010
    Publication date: November 25, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Atsushi HIRANO, Taijyu Gan, Haruo Harada, Takashi Morikawa, Chisato Urano, Yasunori Okano, Hiroshi Arisawa, Takeo Kakinuma, Chikara Manabe
  • Patent number: 7839458
    Abstract: A first electrode of a liquid crystal cell (21) is composed of a plurality of concentric electrodes (31 to 34) of a concentrically circular shape, the plurality of concentric electrodes are divided into a first group of concentric electrodes (44) near the center and a second group of concentric electrodes (45) near the periphery, and a concentric electrode between the two groups is an independent single electrode (36). A first correction unit that corrects spherical aberration of a high density DVD is composed of the two groups and a second correction unit that corrects aberration of a conventional DVD is composed of the first group of concentric electrodes (44). In the case of correcting the aberration of the conventional DVD, the independent concentric electrode (36) is supplied with a voltage between the voltages respectively supplied to adjacent concentric electrodes (35), (37).
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: November 23, 2010
    Assignee: Citizen Holdings Co., Ltd.
    Inventors: Seiichi Osawa, Shinya Sato, Masayuki Iwasaki, Takeshi Toyoda
  • Patent number: 7834940
    Abstract: A display device that includes a first substrate having pixel electrodes; a second substrate having a color filter corresponding to the pixel electrodes to display images; a photo switching element disposed at the first substrate; a red or green color filter corresponding to the photo switching element formed at the second substrate to sense an amount of external light; a driving controller configured to output a driving control signal responsive to the amount of external light sensed by the light sensing unit; and a light generation unit configured to provide the display unit with an internal light controlled by the driving control signal. This photo sensor is well suited to human-eye luminosity and uses external light to determine how much backlight is needed.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: November 16, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Tsutomu Uemoto
  • Publication number: 20100231816
    Abstract: An optical scanning device includes a light source, an optical system, and a housing. The light source projects a light beam. The housing includes a holder and encloses the optical system. The optical system includes a liquid crystal element held by the housing via the holder, to modulate a phase of the light beam projected from the light source against a scanned surface. The liquid crystal element includes a plurality of substantially transparent substrates, a liquid crystal layer, and a sealing member. One of the plurality of the transparent substrates has a size larger than any other transparent substrates and is positioned in the holder. The liquid crystal layer is sandwiched between the plurality of substantially transparent substrates. The sealing member seals the liquid crystal layer between the plurality of substantially transparent substrates.
    Type: Application
    Filed: March 3, 2010
    Publication date: September 16, 2010
    Inventor: Susumu Mikajiri
  • Patent number: 7796199
    Abstract: An aspect of the invention provides a method of recording an image, comprising: providing a display cell having a first cell wall and a second cell wall opposed to the first cell wall, the cell walls enclosing a layer of a display medium comprising a liquid crystal material having finely-divided pigment particles dispersed therein, each cell wall including an electrode for applying an electric field across the display medium; applying via the electrodes a first electric field of a first polarity and of sufficient magnitude and duration to cause the particles to migrate and accumulate at the first cell wall; illuminating at least some of the particles with an image to be recorded; and applying via the electrodes a second electric field of opposite polarity to the first polarity and of sufficient magnitude and duration to cause some but not all particles to migrate from the first cell wall so as to produce a recorded image.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: September 14, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: David Sikharulidze
  • Patent number: 7787063
    Abstract: On one side of a liquid crystal layer, a first electrode is provided, and, on the other side of the liquid crystal layer, a second electrode, composed of a plurality of individual electrodes, and a third electrode are provided. The second and third electrodes have holes that are increasingly small away from the liquid crystal layer. When the potential at the third electrode is set equal to or lower than the potential at the second electrode, the liquid crystal layer acts as a convex lens; when the potential at the third electrode is set higher than the potential at the second electrode, the liquid crystal layer acts as a concave lens. The range in which the focal length can be varied depends on the diameters of the holes, and giving the holes of the different electrodes varying diameters helps widen the range. Moreover, conductors can be laid to reach the electrodes at the outer edges thereof so as not to directly face the liquid crystal layer.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: August 31, 2010
    Assignee: Konica Minolta Holdings, Inc.
    Inventor: Satoru Hirose
  • Patent number: 7773162
    Abstract: There is described a signing film wherein provided on a background of the signing film is a decorative printing which forms a security feature and which fluoresces when viewed under UV light. So that the decorative printing which fluoresces under UV light is not to be perceived when viewing the surface of the signing film at different viewing angles in ambient light, it is proposed that the background of the signing film has at least two background layers and between them the decorative printing comprising a lacquer which contains a high-viscosity binding agent and is mixed with pigments which fluoresce under UV light, so that after the printing operation and the drying operation it is of a small layer thickness as a consequence of the high viscosity.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: August 10, 2010
    Assignee: Leonhard Kurz Stiftung & Co. KG
    Inventor: Uwe Nendel
  • Patent number: 7760274
    Abstract: Provided are a programmable mask for promptly fabricating a biomolecule or polymer array having high density, an apparatus for fabricating a biomolecule or polymer array including the mask, and a method of fabricating a biomolecule or polymer array using the programmable mask.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: July 20, 2010
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Moon Youn Jung, Dong Ho Shin, Se Ho Park, Hyeon Bong Pyo, Chi Hoon Jun
  • Patent number: 7746542
    Abstract: The present invention provides a multicolor display optical composition comprising a dispersion medium, a periodic structure having a porous structure inside communicated with the outside, and mobile particles contained in the dispersion medium so as to be movable and having a volume average primary particle diameter from 1 nm to 80 nm in a dispersion state in the dispersion medium, a volume average particle diameter of coagulated particles of 100 nm or larger in optical coagulation state by stimulation application, and having a refractive index different from that of the dispersion medium by 0.1 or more, wherein the mobile particles show no coloration in the dispersion state when the particles are dispersed in the dispersion medium and show white coloration with a predetermined whiteness value or higher in the coagulation state when the particles are coagulated, an optical device, and a display method of the optical device.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: June 29, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Ryojiro Akashi, Daisuke Nakayama
  • Patent number: 7724433
    Abstract: A composition for multi-color display material, including a periodic structure having a void structure inside that communicates with the outside, and a mobile particle that is selectively disposed inside or outside of the void structure of the periodic structure.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: May 25, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Daisuke Nakayama, Ryojiro Akashi
  • Publication number: 20100085495
    Abstract: In front of the objective lens of an optical head deice, a birefringence correction element (5a) having a first birefringence correcting section consisting of a liquid crystal polymer layer (15a) and electrodes (14a, 14b), a second birefringence correcting section consisting of a liquid crystal polymer layer (15b) and electrodes (14c, 14d), and a third birefringence correcting section consisting of a liquid crystal polymer layer (15c) and electrodes (14e, 14f) is provided. The first birefringence correcting section corrects the impact of vertical birefringence of the protective layer in an optical recording medium variable depending on the kind of an optical recording medium, and the second and third birefringence correcting sections correct the impact of the recording medium protective layer in-plane birefringence that varies by the kind of the optical recording medium.
    Type: Application
    Filed: March 5, 2008
    Publication date: April 8, 2010
    Inventor: Ryuichi Katayama
  • Publication number: 20100053481
    Abstract: An optical element is disclosed. The optical element may include a container having a holding chamber; a polarized or conductive and transparent first liquid filled in the holding chamber; a liquid crystal filled in the holding chamber and not mutually mixing with the first liquid; first and second electrodes applying an electric field to the first liquid; and voltage application means for applying voltage between the first electrode and the second electrode.
    Type: Application
    Filed: November 5, 2009
    Publication date: March 4, 2010
    Applicant: SONY CORPORATION
    Inventors: Tadahiro Ohishi, Kazuhiro Tanaka
  • Patent number: 7576760
    Abstract: A multi-level optical writer for writing an image by illumination to an optical-write-type recording medium laid with a display layer having a memory nature and a photoconductive layer, the optical writer includes: a holding portion holding the optical-write-type recording medium; and a write section for writing a multi-level image to the display layer by illuminating, to the photoconductive layer, image light having optical dots different in size in accordance with a gray level.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: August 18, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Minoru Koshimizu, Tsutomu Ishii, Yasunori Saito, Ikutaroh Nagatsuka
  • Patent number: 7572490
    Abstract: A liquid crystal display having a brightness enhancement film and a method of manufacturing the brightness enhancement film, the method including providing a solution of high molecular weight resin on a high molecular weight film, uniformly distributing the solution of high molecular weight resin on the high molecular weight film, and drying the solution of high molecular weight resin to form a high molecular weight resin layer, wherein the high molecular weight resin layer has a hexagonal lattice structure.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: August 11, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Dae Park, Jin-Taek Hwang, Jin-Sung Choi
  • Patent number: 7570310
    Abstract: A method drives a spatial light modulation device to record an image into the device. The device includes first and second light modulation layers. The method includes exposing the device to imagewise light while applying a first voltage between electrodes of the first light modulation layer. If the second light modulation layer has such a characteristic that a curve of an intensity of light, which has the same wavelength as the imagewise light and is applied to the second light modulation layer, versus a reflectivity of the second light modulation layer after finishing applying the light has a local maximum point, an intensity of the imagewise light in the exposing is larger than an intensity, which the curve has at the local maximum point, and in the exposing, the second light modulation layer has a reflectivity lower than a reflectivity, which the curve has at the local maximum point.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: August 4, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Haruo Harada, Hiroshi Arisawa, Yasunori Okano, Makoto Gomyou, Taiju Gan
  • Patent number: 7564504
    Abstract: A phase plate having a reduced size and a reduced weight and having accurately parted regions while it has the same function as a conventional two-parted optical rotation plate and an optical data recording/reproducing device capable of stably recording and reproducing are presented. A phase plate P1 comprising a polymer liquid crystal film 2 held between transparent substrates i, 4, wherein the polymer liquid crystal film 2 is parted spatially in the region into which an incident light enters, so that the light transmitting the phase plate assumes a different state of polarization depending on an aligning direction of the molecules of the polymer liquid crystal film 2. The phase plate is located as a two-parted optical rotation plate in an optical data recording/reproducing device.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: July 21, 2009
    Assignee: Asahi Glass Company, Limited
    Inventors: Yoshiharu Ooi, Ryota Murakami, Hiromasa Sato, Takuji Nomura, Masahiro Murakawa, Yoshiyuki Miyake
  • Patent number: 7550181
    Abstract: A novel information recording medium is provided which records information upon the application of thermal energy, reads the recorded information by detecting the value of photoelectric current generated by light applied to the information recorded portion, and can realize multi-valued information recording or analog information recording. The information recording medium comprises: a pair of electrodes; and a liquid crystal material filled into a gap between the electrodes, the liquid crystal material having a property such that the charge-transport properties are varied according to the phase transfer between a plurality of stable liquid crystal phases of the liquid crystal and/or the history of the phase transfer.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: June 23, 2009
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hiroki Maeda, Kyoko Kogo, Junichi Hanna
  • Patent number: 7532260
    Abstract: A display system includes a display arranged to receive an image wise pattern of light to form an image, including, a pair of conductors, at least one conductor being transparent, a layer of cholesteric liquid crystal material disposed between the conductors, the liquid crystal material having multiple stable optical states at zero electrical field, and a light absorber for forming an image wise thermal pattern in the liquid crystal sufficient to change the optical state of the cholesteric liquid crystal in response to an image wise pattern of light; a display writer, including, a light source for producing a flash of light of sufficient intensity to generate sufficient heat in the light absorber to change the optical state of the cholesteric liquid crystal, a mask located between the light source and the display for defining the image wise pattern of light, a display drive connectable to the conductors for generating an electric field between the conductors for changing the optical state of the cholesteric l
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: May 12, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Stanley W. Stephenson, Xiang-Dong Mi, David M. Johnson
  • Publication number: 20090115921
    Abstract: An optical recording and reproducing apparatus which suppresses the generation of a noise component in a servo signal while preventing a deterioration in using efficiency of a light beam is provided. The optical recording and reproducing apparatus has an optical pickup including a liquid crystal correcting element, a liquid crystal element control unit, a memory, and an operation mode control unit. The memory stores a plurality of correction data sets respectively corresponding to a plurality of refractive index distribution to be formed by the liquid crystal correcting element. The liquid crystal element control unit selectively reads out the correction data set corresponding to the operation mode designated by the operation mode control unit from the memory and supplies a driving voltage according to the read-out correction data set to the liquid crystal correcting element.
    Type: Application
    Filed: March 12, 2007
    Publication date: May 7, 2009
    Applicant: Pioneer Corporation
    Inventors: Shinichi Fujinoki, Hisao Tanaka
  • Patent number: 7518673
    Abstract: An electronic apparatus is provided, which includes: a middle frame having a frame section formed in the shape of a frame with four side sections; a front panel joined with the middle frame to seal one opening of the middle frame; a rear panel joined with the middle frame to seal another opening of the middle frame; a liquid crystal panel placed within an outer casing configured by the middle frame, the front panel and the rear panel; a back light panel placed within the outer casing, irradiating light towards the liquid crystal panel; and a holding plate placed within the outer casing on a side opposite the liquid crystal panel with the back light panel in-between, pressing the back light panel.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: April 14, 2009
    Assignee: Sony Corporation
    Inventor: Hiroki Doui
  • Patent number: 7511775
    Abstract: An optical address type spatial light modulator has a plurality of optical address type light modulation layers stacked on each other, each having a liquid crystal layer for reflecting visible light in a specific wavelength band or a liquid crystal layer for absorbing visible light in a specific wavelength band and coloring and a photoconductive layer for absorbing the visible light in the specific wavelength band and changing the resistance value in response to the light intensity of the visible light absorbed, the liquid crystal layer and the photoconductive layer being stacked on each other between electrodes.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: March 31, 2009
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Haruo Harada, Hiroshi Arisawa, Hideo Kobayashi, Takeo Kakinuma, Minoru Koshimizu
  • Publication number: 20090059101
    Abstract: An auto-focus camera (100) can include a lens (102), a sensor (108) for detecting an image from the lens, a first liquid crystal layer (104) between the lens and the sensor, and a second liquid crystal layer (106) between the lens and the sensor and further orthogonally aligned to the first liquid crystal layer. The auto-focus camera can further include an integrated circuit programmed to drive the first liquid crystal layer and the second liquid crystal layer. The auto-focus camera can include a controller (202) programmed to control two orthogonally aligned liquid crystal layers. The liquid crystal layers can serve as an optical anti-alias filter using birefringence properties of the liquid crystal layers. The first liquid crystal layer and the second liquid crystal layer can be orthogonally aligned to achieve polarization insensitive operation of the auto-focus camera.
    Type: Application
    Filed: August 28, 2007
    Publication date: March 5, 2009
    Applicant: MOTOROLA, INC.
    Inventors: DONGXUE WANG, KEVIN W. JOHNSON, ZHIMING ZHUANG
  • Patent number: 7497970
    Abstract: The chiral agent used for liquid crystal according to the present invention comprises a phosphoric acid amide represented by General Formula (1) below: in General Formula (1), the binaphthyl structure has an axial asymmetry of either (R) or (S); R1 and R2 may be identical or different and each represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, an alkenyl group, an alkynyl group or an alkoxy group; R3 and R4 may be identical or different and each represents a hydrogen atom, an alkyl group or an aryl group.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: March 3, 2009
    Assignee: FUJIFILM Corporation
    Inventor: Masatoshi Yumoto
  • Patent number: 7495713
    Abstract: A touch panel is provided. The touch panel comprises a first substrate and a second substrate facing the first substrate. A black matrix is formed on the first substrate defining a plurality of sub-pixel areas, a plurality of color filters on the sub-pixel areas. A photosensitive sensitive element is formed on the second substrate. The color filters comprise a red color filter, a green color filter, a blue color filter and a white color filter over the photosensitive element.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: February 24, 2009
    Assignee: Hannstar Display Corp.
    Inventors: Cheng-Yeh Tsai, Wei-Chou Chen
  • Publication number: 20090002301
    Abstract: A liquid crystal display includes a liquid crystal display panel having a plurality of data lines, a plurality of gate lines, and a plurality of liquid crystal cells, a timing controller to determine gray levels of input digital video data and a time at which a polarity of a data voltage to be supplied to the data lines is inverted and generate a dynamic charge share control signal to indicate a time at which the gray level of the data voltage is changed from a white gray level to a black gray level and a time at which the polarity of the data voltage is inverted, and to detect weakness patterns in which the data of the white gray level and the black gray level are regularly arranged in the input digital video data and generate a dot inversion control signal for widening a horizontal polarity inversion time of data voltages to be supplied to the data lines when the weakness patterns are input, a data driving circuit to convert the digital video data from the timing controller into the data voltage, change the
    Type: Application
    Filed: December 31, 2007
    Publication date: January 1, 2009
    Inventors: Sungjo Koo, Suhyuk Jang, Jongwoo Kim
  • Patent number: 7450187
    Abstract: A liquid crystal shutter (100) and a camera (200) with therein. The liquid crystal shutter (100) includes a power supply (10), a switch (20) and a liquid crystal box (40), all parts are electrically connected and form a control circuit. The liquid crystal box (40) includes a first electric plate (42), a first polarizing filter (424), a second electric plate (44), and a second polarizing filter (444). A predetermined amount of liquid crystal (46) is contained between the first electric plate (42) and the second electric plate (44). The first polarizing filter (424) is formed on a surface of the first electric plate (42). A second polarizing filter (444) is formed on a surface of the second electric plate (44). The axial direction of the second polarizing filter (444) is perpendicular to that of the first polarizing filter (424).
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: November 11, 2008
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Wen-Hsin Sun
  • Publication number: 20080231765
    Abstract: The disclosure is directed to an electro-optical device. In one example, a plurality of pixels each has a pixel pitch and a light transmissible region. A light shielding unit is configured to restrict the light transmissible region of each of the pixels to a region a size of 1/M (M being an integer) of the pixel pitch in each of a horizontal direction and a vertical direction for each of the pixels.
    Type: Application
    Filed: March 15, 2008
    Publication date: September 25, 2008
    Applicant: Seiko Epson Corporation
    Inventor: Hirosada Horiguchi
  • Patent number: RE42865
    Abstract: An optical scanning characteristic control method is applied to an optical scanning system in which a beam is deflected, and the deflected beam is converged and directed toward a scanning surface, so that optical scanning of the scanning surface is performed by an optical spot formed thereon by the deflected beam. The method comprising the steps of a) disposing a beam deflection control device on the light path of the beam before it is incident on the scanning surface; and b) controlling a beam deflection amount of the beam deflecting device provide to an incident beam so as to control a scanning characteristic of the optical scanning.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: October 25, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Mitsuo Suzuki, Naoki Miyatake, Taku Amada, Seizo Suzuki, Kazuyuki Shimada, Satoru Itoh