Electro-optic Patents (Class 359/315)
  • Patent number: 10295884
    Abstract: A display device is disclosed. The display panel may comprise a display panel including a pixel area and a light refraction element disposed on the display panel. The light refraction element may have a first face facing the display panel and a second face disposed at an opposite side of the first face. The light refraction element may comprise a light refraction pattern disposed at the first face and having a first slanting face and a second slanting face, and the light refraction pattern can refract light emerging from the display panel.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: May 21, 2019
    Inventor: Hyunsik Yoon
  • Patent number: 10290721
    Abstract: The invention provides a method of fabricating an electromechanical structure presenting a first substrate including a layer of monocrystalline material covered in a sacrificial layer that presents a free surface, the structure presenting a mechanical reinforcing pillar in the sacrificial layer, the method including etching a well region in the sacrificial layer to define a mechanical pillar; depositing a first functionalization layer of the first material to at least partially fill the well region and cover the free surface of the sacrificial layer around the well region; depositing a second material different from the first material for terminating the filling of the well region to thereby cover the first functionalization layer around the well region, planarizing the filler layer, the pillar being formed by the superposition of the first material and second material in the well region; and releasing the electromechanical structure by removing at least partially the sacrificial layer.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: May 14, 2019
    Assignee: Commissariat a L'Energie Atomique et aux Energies Alternatives
    Inventors: Vincent Larrey, Francois Perruchot, Bernard Diem, Laurent Clavelier, Philippe Robert
  • Patent number: 10216060
    Abstract: A liquid crystal lens, a manufacturing method thereof, and a display device are provided. The liquid crystal lens includes a first substrate and a second substrate. A first electrode is disposed on the first substrate. A retardation layer is disposed on a side of the first substrate facing the second substrate. The retardation layer includes a plurality of steps having different heights. A second electrode is disposed on the second substrate. The second electrode includes a plurality of sub-electrodes, the plurality of sub-electrodes being one-to-one corresponding to the plurality of steps. The width of the sub-electrode is smaller than the width of the step corresponding to the sub-electrode. A gap is provided between two adjacent sub-electrodes. One edge of the gap is aligned with a step point of two adjacent steps. A liquid crystal is filled in a space between the retardation layer and the second substrate.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: February 26, 2019
    Inventor: Zhongxiao Li
  • Patent number: 10193611
    Abstract: A system and method for focusing an orthogonal function multiplexed beam receives an orthogonal function multiplexed signal from a data processing source. The orthogonal function multiplexed signal includes a plurality of data streams each having a unique orthogonal function applied thereto and multiplexed together within the orthogonal function multiplexed signal. The orthogonal function multiplexed signal passes through a pair of focusing lenses to focus the orthogonal function multiplexed signal on a predetermined focused point. A distance between the pair of focusing lenses is controlled to cause the orthogonal function multiplexed signal to focus at the predetermined focus point. The orthogonal function multiplexed signals are transmitted from a transmitter toward the focus point at a receiver aperture of a receiver as a transmission beam.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: January 29, 2019
    Inventors: Solyman Ashrafi, Roger D. Linquist, Nima Ashrafi
  • Patent number: 10158076
    Abstract: The display device includes a first base portion; a semiconductor layer disposed on the first base portion and including a source region, a drain region and a channel region; a first insulating layer disposed on the semiconductor layer; a gate line disposed on the first insulating layer extending in a first direction and overlapping the channel region; a second insulating layer disposed on the gate line; a first connection plug formed in the first and second insulating layer filling a first connection hole exposing the source region; a second connection plug formed in the first and second insulating layer filling a second connection hole exposing the drain region; a first and second conductive pattern disposed on the second insulating layer; a pixel electrode disposed on the second insulating layer and electrically connected to the first conductive pattern; and a data line disposed on the second insulating layer to extend in a second direction.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: December 18, 2018
    Inventors: Bon Yong Koo, Young Wan Seo
  • Patent number: 10101629
    Abstract: An optical modulation device or an optical device including the same includes: a first plate and a second plate facing the first plate; and a liquid crystal layer between the first plate and the second plate and including a plurality of liquid crystal molecules, wherein the first plate includes a plurality of first electrodes and a first aligner, the second plate includes at least one second electrode and a second aligner, and an alignment direction of the first aligner is substantially parallel to an alignment direction of the second aligner and wherein portions of the first plate, the second plate, and the liquid crystal layer between the first and second plates are individual units.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: October 16, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soo Hee Oh, Yoon Kyung Park, Kyung Ho Jung, Seung Jun Jeong, Moon Jung Baek, Hyun Seung Seo
  • Patent number: 9922825
    Abstract: An electronic device includes first and second electrodes that are spaced apart from each other and a 2D material layer. The 2D material layer connects the first and second electrodes. The 2D material layer includes a plurality of 2D nanomaterials. At least some of the 2D nanomaterials overlap one another.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: March 20, 2018
    Inventors: Minhyun Lee, Hyeonjin Shin, Jaeho Lee, Haeryong Kim
  • Patent number: 9846341
    Abstract: A display device includes a transparent substrate; a plurality of electro-conductive polarizers disposed on the transparent substrate; an insulating layer disposed on the plurality of electro-conductive polarizers; and a plurality of gate lines disposed on the insulating layer, wherein each of the plurality of electro-conductive polarizers is coupled to each of the plurality of gate lines.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: December 19, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Cheol Kyu Kim, Dae Young Lee
  • Patent number: 9823538
    Abstract: A display device comprises a plurality of pixels, each pixel having a portion (10) of a solid-state, phase-change material such as germanium-antimonium-telluride (GST) or vanadium dioxide, wherein the phase-change material can be reversibly brought into an amorphous state or a crystaline state and has a refractive index that is reversibly, electrically controllable. A plurality of electrodes (14, 16) are provided, at least two of which contact said portion of material (10). A controller (19) is provided that is adapted to apply at least one voltage to said material (10), via said electrodes (14, 16), to change said refractive index. An array of such portions of material can be arranged to make a pixellated display, for example a stereoscopic display of the volumetric type.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: November 21, 2017
    Inventors: Harish Bhaskaran, Peiman Hosseini
  • Patent number: 9780284
    Abstract: A micromechanical sensor device and a corresponding production method include a substrate that has a front and a rear and a plurality of pillars that are formed on the front of the substrate. On each pillar, a respective sensor element is formed, which has a greater lateral extent than the associated pillar. A cavity is provided laterally to the pillars beneath the sensor elements. The sensor elements are laterally spaced apart from each other by respective separating troughs and make electrical contact with a respective associated rear contact via the respective associated pillar.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: October 3, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Georg Bischopink, Christoph Schelling
  • Patent number: 9413448
    Abstract: A system for focusing a multiplexed beam includes OAM signal processing circuitry for generating a multiplexed OAM multiplexed signal. A plurality of antennas comprises an antenna array. An antenna array control circuit controls transmission of the multiplexed OAM signal from each of the plurality of antennas in the antenna array. The antenna array control circuit generates control signals to cause the antenna array to transmit the OAM multiplexed signal from each of the plurality of antennas of the antenna array toward a focus point as a transmission beam and controls a timing of the transmissions of the OAM multiplexed signal from each of the plurality of antennas of the antenna array to cause the transmitted OAM multiplexed signals to arrive at the focus point at substantially a same time.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: August 9, 2016
    Inventors: Solyman Ashrafi, Roger Linquist, Nima Ashrafi
  • Patent number: 9091900
    Abstract: An electro-optic modulator includes a substrate and a Y-shaped waveguide. The substrate has a top surface. The Y-shaped waveguide is formed in the top surface and includes a non-modulated branch and a modulated branch. The substrate defines two grooves in the top surface, separating the non-modulated branch and the modulated branch.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: July 28, 2015
    Inventor: Hsin-Shun Huang
  • Publication number: 20150138627
    Abstract: A projection or back-projection method, according to which a glazing including two main external surfaces, used as projection or back-projection screen, and a projector are available. The method includes projecting, by virtue of the projector, images viewable by spectators onto one of the sides of the glazing. The glazing includes a transparent layered element exhibiting diffuse reflection properties.
    Type: Application
    Filed: May 23, 2013
    Publication date: May 21, 2015
    Inventors: Marie-Virginie Ehrensperger, Patrick Gayout, Emmanuel Mimoun, Etienne Sandre-Chardonnal
  • Patent number: 9036239
    Abstract: Electrooptical cell, including, on a substrate (1), a layer of ferroelectric massive material (4), with an electrode (2) forming an earth plane, provided between the substrate (1) and the ferroelectric layer (4), another electrode (5), narrow, mounted opposite the first above the ferroelectric layer and grooves (6) made in the ferroelectric layer, on either side of the upper electrode (5).
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: May 19, 2015
    Inventor: Marc Alexandre Bouvrot
  • Patent number: 8997572
    Abstract: A probe for use with an imaging system, including a scanning device configured to receive a first light beam from a light source, a beam-divider configured to split the first light beam into a plurality of second light beams, and a focusing device configured to focus each of the second light beams on respective locations in an object of interest.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: April 7, 2015
    Assignee: Washington University
    Inventors: Lihong Wang, Liang Song, Konstantin Maslov, Bin Rao
  • Publication number: 20150070676
    Abstract: A first electro-optic crystal substrate and a second electro-optic crystal substrate are provided as an electro-optic crystal substrate. The first electro-optic crystal substrate comprises a first periodic polarization reversal structure in which first polarization pairs, in each of which the directions of polarization in response to electric fields are opposite to each other, are arranged in a first period along a first arrangement direction which is orthogonal or inclined with respect to the direction of propagation, and light passes through the first periodic polarization reversal structure.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 12, 2015
    Inventors: Masahide OKAZAKI, Toshiaki Suhara
  • Patent number: 8963911
    Abstract: A first constant potential wiring that supplies a first constant potential to a scanning line drive circuit and a second constant potential wiring that supplies the first constant potential to a clock buffer circuit are electrically separated from each other.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: February 24, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Teiichiro Nakamura
  • Publication number: 20150036209
    Abstract: A light deflection element is capable of deflecting incident light so as to follow a position of an observer and suppressing reduction in intensity of light that reaches eyes of the observer regardless of their position. The light deflection element includes: a first optical element configured to deflect incident light; a second optical element configured to change a deflection direction of emitted light by changing a refractive index thereof according to a voltage applied thereto; a third optical element; and a control section configured to control the voltage applied to the second optical element. At least one of interfaces between the first and second optical elements and the second and third optical elements is an aspheric surface. The aspheric surface has an optical power that compensates enlargement of the emitted light which is caused by refractive index distribution caused when a voltage is applied to the second optical element.
    Type: Application
    Filed: October 17, 2014
    Publication date: February 5, 2015
    Inventors: Kouki ICHIHASHI, Masahiro KASANO, Yasuhiro Tanaka, Katsuhiko HAYASHI
  • Patent number: 8947764
    Abstract: An optical device includes a microdisk optical resonator element. The microdisk resonator element is formed on a substrate and has upper and lower portions respectively distal and proximal the substrate. An arcuate semiconductor contact region partially surrounds the microdisk resonator element. A first modulator electrode is centrally formed on the upper portion of the microdisk resonator element, and a second modulator electrode is formed on the arcuate contact region. A laminar semiconductor region smaller in thickness than the microdisk resonator element separates the arcuate contact region from the microdisk resonator element and is formed on the substrate so as to electrically connect the arcuate contact region to the lower portion of the microdisk resonator element.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: February 3, 2015
    Assignee: Sandia Corporation
    Inventors: Christopher DeRose, William A. Zortman
  • Patent number: 8900897
    Abstract: Devices are described including a component comprising an alloy of AlN and AlSb. The component has an index of refraction substantially the same as that of a semiconductor in the optoelectronic device, and has high transparency at wavelengths of light used in the optoelectronic device. The component is in contact with the semiconductor in the optoelectronic device. The alloy comprises between 0% and 100% AlN by weight and between 0% and 100% AlSb by weight. The semiconductor can be a III-V semiconductor such as GaAs or AlGaInP. The component can be used as a transparent insulator. The alloy can also be doped to form either a p-type conductor or an n-type conductor, and the component can be used as a transparent conductor. Methods of making and devices utilizing the alloy are also disclosed.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: December 2, 2014
    Assignee: Intermolecular, Inc.
    Inventors: Philip Kraus, Thai Cheng Chua, Yoga Saripalli
  • Publication number: 20140333992
    Abstract: A controllable polymer actuator (1) comprising a dielectric elastomeric film (2); a first (3) and a second (4) deformable electrode arranged on opposite sides of the dielectric elastomeric film such that application of a voltage between the electrodes causes an active portion (7) of the controllable polymer actuator to change topography. The controllable polymer actuator (1) further comprises a deformation controlling layer (5, 6) connected to the dielectric elastomeric film. The deformation controlling layer at least locally has a higher stiffness than the dielectric elastomeric film, and exhibits a spatially varying stiffness across the active portion (7). This may enable surface topographies that could not at all be achieved using previously known controllable polymer actuators and/or may enable a certain surface topography to be achieved with a simpler electrode pattern and/or fewer individually controllable electrodes.
    Type: Application
    Filed: December 18, 2012
    Publication date: November 13, 2014
    Inventors: Wiebe Wagemans, Dirk Brokken, Floris Maria Hermansz Crompvoets
  • Patent number: 8879141
    Abstract: Methods and devices for calibrating and controlling the actuation of an analog interferometric modulator configured to have a plurality of actuation states. Devices and methods for calibrating an analog interferometric modulator to respond in linear relation to an applied voltage.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: November 4, 2014
    Assignee: Qualcomm MEMS Technologies, Inc.
    Inventors: Chong U. Lee, John H. Hong, Marc M. Mignard, Alok Govil
  • Patent number: 8873126
    Abstract: An electrooptic device includes first and second substrates that are disposed opposing each other with an electrooptic material layer therebetween, a sealing material that bonds the first and second substrates, a pixel area, and an ion trap portion between the pixel area and the sealing material. The ion trap portion includes first and second electrodes that are formed in a comb-tooth shape and are disposed so that branch electrodes of the first electrode and branch electrodes of the second electrode are engaged with each other. A direction of the branch electrodes intersects with an orientation direction of the electrooptic material at an interface between the electrooptic material layer and the first substrate.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: October 28, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Naoki Tomikawa, Hiroyuki Hara, Tomoki Yokota
  • Patent number: 8867121
    Abstract: Electrically reconfigurable metamaterial with spatially varied refractive index is proposed for applications such as optical devices and lenses. The apparatus and method comprises a metamaterial in which the refractive indices are modified in space and time by applying one or more electric fields. The metamaterials are electrically controllable and reconfigurable, and consist of metal (gold, silver, etc.) particles of different shapes, such as rods, with dimension much smaller than the wavelength of light, dispersed in a dielectric medium. The metamaterial is controlled by applying a non-uniform electric field that causes two effects: (1) It aligns the metallic anisometric particles with respect to the direction of the applied electric field and (2) It redistributes particles in space, making their local concentration position dependent.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: October 21, 2014
    Assignee: Kent State University
    Inventors: Oleg D. Lavrentovich, Andrii B. Golovin
  • Patent number: 8859310
    Abstract: Methods of fabricating optoelectronic devices, such as photovoltaic cells and light-emitting devices. In one embodiment, such a method includes providing a substrate, applying a monolayer of semiconductor particles to the substrate, and encasing the monolayer with one or more coatings so as to form an encased-particle layer. At some point during the method, the substrate is removed so as to expose the reverse side of the encased-particle layer and further processing is performed on the reverse side. When a device made using such a method has been completed and installed into an electrical circuit the semiconductor particles actively participate in the photoelectric effect or generation of light, depending on the type of device.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: October 14, 2014
    Assignee: Versatilis LLC
    Inventor: Ajaykumar R. Jain
  • Publication number: 20140285741
    Abstract: According to an embodiment, a liquid crystal lens device includes an optical element and a voltage controller. The optical element includes: a refractive index modulation layer of which a refractive index distribution changes according to a voltage applied thereto; and electrodes to apply a voltage to the refractive index modulation layer. In a first voltage state, the voltage controller controls voltages applied to the electrodes such that a first refractive index distribution is arranged periodically in the optical element. In a second voltage state, the voltage controller controls voltages applied to the electrodes such that a second refractive index distribution is achieved. In an intermediate voltage state, the voltage controller controls a voltage applied to a first-type electrode, to which a first voltage that is the maximum value among the voltages applied to the electrodes in the first voltage state is applied, to a second voltage lower than the first voltage.
    Type: Application
    Filed: June 5, 2014
    Publication date: September 25, 2014
    Inventors: Masako KASHIWAGI, Shinichi Uehara, Ayako Takagi
  • Patent number: 8837036
    Abstract: A subwavelength terahertz switch using an artificially designed conductor metamaterial is discussed in this invention. Slow-light EM Wave propagating at THZ speed imitates the strongly localized surface plasmon modes and henceforth is called Spoof Surface Plasmon Polariton (SSPP) in this invention. The SSPP mode of slow-light EM propagation can be easily tailored by changing the refractive index of the dielectric materials inside the metallic gap structure engineered as a periodic array of grooves. Thus, the incorporation of electro-optical material which has birefringence such as a nematic liquid crystal (N-LC) or multiple refractive indices into the metallic gap leads to a highly compact and efficient terahertz switch being controlled by a low voltage signal. The THZ dynamic switches can be used to construct linear switches, Y junction switches and Mach Zehnder interferometers.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: September 16, 2014
    Inventor: Pinaki Mazumder
  • Publication number: 20140253997
    Abstract: Provided are an islands-in-sea type photorefractive polymer composite, and a photorefractive device and an optical device including the same. The islands-in-sea type photorefractive polymer composite includes at least a photoconductive polymer matrix, a nonlinear optical chromophore, and a plasticizer, as a sea component, and includes at least a photocharge generator as an island component.
    Type: Application
    Filed: August 27, 2013
    Publication date: September 11, 2014
    Inventors: Chil-sung CHOI, Kyoung-seok PYUN
  • Patent number: 8830561
    Abstract: The present invention is directed to an electrophoretic display comprising: (a) microcups comprising partition walls and top-openings; (b) an organic-based electrophoretic fluid filled in the microcups, wherein said fluid comprises charged pigment particles dispersed in a solvent; and (c) a top-sealing layer formed from a sealing composition to enclose the electrophoretic fluid within the microcups. The sealing composition comprises: (i) a water soluble polymer, (ii) a water-based suspension, a water-based dispersion, a water-based emulsion, or a water-based latex, each comprising a polymer; and (iii) water.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: September 9, 2014
    Assignee: E Ink California, LLC
    Inventors: HongMei Zang, Hui Chen
  • Patent number: 8824036
    Abstract: A thermally stabilized, high speed, micrometer-scale silicon electro-optic modulator is provided. Methods for maintaining desired temperatures in electro-optic modulators are also provided. The methods can be used to maintain high quality modulation in the presence of thermal variations from the surroundings. Direct current injection into the thermally stabilized electro-optic modulator is used to maintain the modulation performance of the modulator. The direct injected current changes the local temperature of the thermally stabilized electro-optic modulator to maintain its operation over a wide temperature range.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: September 2, 2014
    Assignee: Cornell University
    Inventors: Sasikanth Manipatruni, Rajeev Dokania, Alyssa B. Apsel, Michal Lipson
  • Patent number: 8784675
    Abstract: The ferroelectric substrate 11 of ferroelectric crystals, while being supported by the support plate 14 which is thicker than the ferroelectric substrate 11, is integrated with the support plate 14 by letting the junction 13 mediate between one major surface S1A of the ferroelectric substrate 11 and one major surface S1B of the support plate 14, and therefore, it is possible through the flat surface polishing to perform thinning of the ferroelectric substrate 11, namely, the ferroelectric crystals, and as a result, it is possible to obtain the thin periodically poled structure. By the voltage application method, the domain inverted region is formed in the ferroelectric substrate 11 which is made thin.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: July 22, 2014
    Assignee: Dainippon Screen Mfg. Co. Ltd.
    Inventors: Masahide Okazaki, Toshiaki Suhara
  • Publication number: 20140198099
    Abstract: A display-mode switching device includes a substrate, a plurality of first electrode stripes, a plurality of second electrode stripes, a plurality of third electrode stripes, a fourth electrode stripes, and a common electrode covering a surface of the substrate. The first electrode stripes, the second electrode stripes, the third electrode stripes and the fourth electrode stripes are disposed on the insulating layer, and each first electrode stripe, each third electrode stripe, each second electrode stripe and each fourth electrode stripe are sequentially arranged along a direction.
    Type: Application
    Filed: April 10, 2013
    Publication date: July 17, 2014
    Applicant: HannStar Display Corp.
    Inventors: Heng-Cheng Tseng, Chih-Hsuan Lee
  • Patent number: 8773749
    Abstract: A variable focusing lens is provided that can change the focal length at a high speed. The variable focusing lens includes: a single crystal electrooptic material having inversion symmetry; a first anode formed on a first surface of the electrooptic material; a second cathode provided to have an interval to the first anode; and a first cathode and a second anode that are formed on a second surface opposed to the first surface and that are formed at positions opposed to the first anode and the second cathode. An optical axis is set so that, when light enters through a third face orthogonal to the first surface, light exists through a fourth surface opposed to the third face. A voltage applied between the first and the second pair of electrodes is changed to thereby change the focal point of light emitted from the fourth surface of the electrooptic material.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: July 8, 2014
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Tadayuki Imai, Masahiro Sasaura, Jun Miyazu, Shogo Yagi, Seiji Toyoda
  • Patent number: 8754859
    Abstract: An electro-optic display comprises, in order, a light-transmissive electrically-conductive layer; a layer of a solid electro-optic material; and a backplane (162) bearing a plurality of pixel electrodes. A peripheral portion of the backplane extends outwardly beyond the layer of solid electro-optic material and bears a plurality of radiation generators (166) and a plurality of radiation detectors (168), the radiation generators and detectors together being arranged to act as a touch screen.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: June 17, 2014
    Assignee: E Ink Corporation
    Inventors: Holly G. Gates, Robert W. Zehner, Russell J. Wilcox, Matthew J. Aprea
  • Patent number: 8755104
    Abstract: Embodiments of the present disclosure provide an electrowetting display panel and the manufacturing method thereof The electrowetting display panel comprises: a first glass substrate; a second glass substrate provided opposite to the first glass substrate; a cavity provided between the first glass substrate and the second glass substrate; a colored conductive liquid filled into the cavity; and a reflecting conductive element provided on the surface of the first glass substrate facing away from the second glass substrate, and corresponding to the cavity, wherein the reflecting conductive element is used for controlling the light transmissivity of the colored conductive liquid within the cavity according to the voltage applied to the reflecting conductive element and reflecting the light passing through the colored conductive liquid toward the second glass substrate.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: June 17, 2014
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Qi Yao, Jianshe Xue, Zhanfeng Cao, Tianming Dai, Feng Zhang
  • Publication number: 20140160554
    Abstract: Disclosed is an image display apparatus, including a display device displaying right-eye images and left-eye images. A light-modulating device attached to the display device; and a temperature sensor monitoring the light-modulating device temperature. The light-modulating device deflects the right-eye and left-eye images to an observer's right and left eyes respectively without a temperature variation in the temperature sensor.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 12, 2014
    Inventors: Yeong-Feng WANG, Ching-Tung HSU, Yen-I CHOU, Chia-Yen LEE, Meng-Han LIU, Ming-Wei TSAI
  • Publication number: 20140133000
    Abstract: Provided are a photorefractive polymer composite, and a photorefractive devices and hologram display device including the same. The photorefractive polymer composite includes a photoconductive polymer matrix, a nonlinear optical chromophore, a plasticizer, and a graphite-based photocharge generator.
    Type: Application
    Filed: August 20, 2013
    Publication date: May 15, 2014
    Inventors: Chil-sung CHOI, Kyoung-seok PYUN
  • Patent number: 8721074
    Abstract: Ophthalmic lenses, including contact lenses may be enhanced through the incorporation of both active and passive electrical components. Electrical interconnects and die attachment configurations are required to ensure electrical connectivity between the components and the optic portion of the lens as well as providing a means for mounting planar devices on spherical surfaces. Electrical interconnects and die attachment for powered ophthalmic devices, including contact lenses includes realizing conductive traces on optical plastic, attaching planar dies to spherical surfaces and underfilling, overmolding and light blocking to complete the lens.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: May 13, 2014
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Randall Braxton Pugh, Adam Toner, Praveen Pandojirao-S, James Daniel Riall, Daniel B. Otts, Edward Kernick
  • Patent number: 8717280
    Abstract: A lookup table provides voltage waveforms for transitions between a plurality of discrete pixel states forming a set that can be ordered in consecutive states according to a reflectivity of the pixel. An image controller repeatedly executes, in a consecutive drive phase, the steps of retrieving an initial state and update state, matching, when the initial and update states are different, in the ordered set of pixel states of the lookup table, a consecutive state and a corresponding consecutive waveform, the consecutive state forming a path, according to the consecutive drive phase, from the initial state to the update state in the set of pixel states, storing the consecutive state in the memory as new initial state; and controlling a voltage driver to drive the pixel from the initial state to the consecutive state using said consecutive waveform.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: May 6, 2014
    Assignee: Creator Technology B.V.
    Inventors: Cornelis Jan Hendrik de Zeeuw, Robert Sjang Josine van Dijk, Erik van Veenendaal, Leendert Marinus Hage
  • Patent number: 8704891
    Abstract: An electro-optic display unit is disclosed. The electro-optic unit may be mountable to an exterior of a vehicle and may be rotatable about a single axis of rotation.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: April 22, 2014
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Jason F. Burch, Michael E. Zimmer
  • Patent number: 8690321
    Abstract: A tracking device (6) for controlling the focus of electroactive spectacles (2), the spectacles (2) comprising electroactive lenses (24, 26), the tracking device (6) comprising: a tracking camera (14), a tracking controller (18), and a transmitter (20); wherein the tracking controller (18) is configured to: capture, via the tracking camera (14), an image (16); detect, in the image (16), a pair of eyes; determine, from the image of the eyes, a target focus; and transmit, via the transmitter (20), a focus message (4) to the spectacles (2), the focus message (4) being indicative of the target focus, and instructive to the spectacles (2) to set the focus of the lenses (24, 26) accordingly.
    Type: Grant
    Filed: April 21, 2012
    Date of Patent: April 8, 2014
    Inventor: Paul Lapstun
  • Publication number: 20140055835
    Abstract: An illumination device capable of suppressing formation of a double image in three-dimensional display, and a display unit including the illumination device are provided. In a light modulation device bonded to a light guide plate, a scattering region that scatters light propagating within the light guide plate, and a transmissive region that allows light propagating within the light guide plate to pass therethrough are formed through control of an electric field. The scattering region scatters light to generate linear illumination light. A reflector is provided directly below the light modulation device. The reflector reflects light, which is part of the scattered light generated in the scattering region and is emitted to a reflector side, to generate reflected light to be focused directly below the scattering region.
    Type: Application
    Filed: May 2, 2012
    Publication date: February 27, 2014
    Applicant: Sony Corporation
    Inventors: Shogo Shinkai, Akira Ebisui, Harumi Sato, Kentaro Okuyama
  • Patent number: 8659816
    Abstract: This disclosure provides mechanical layers and methods of forming the same. In one aspect, a method of forming a pixel includes depositing a black mask on a substrate, depositing an optical stack over the black mask, and forming a mechanical layer over the optical stack. The black mask is disposed along at least a portion of a side of the pixel, and the mechanical layer defines a cavity between the mechanical layer and the optical stack. The mechanical layer includes a reflective layer, a dielectric layer, and a cap layer, and the dielectric layer is disposed between the reflective layer and the cap layer. The method further includes forming a notch in the dielectric layer of the mechanical layer along the side of the pixel so as to reduce the overlap of the dielectric layer with the black mask along the side of the pixel.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: February 25, 2014
    Assignee: Qualcomm Mems Technologies, Inc.
    Inventors: Yi Tao, Hojin Lee, Fan Zhong
  • Patent number: 8659813
    Abstract: Briefly, in accordance with one or more embodiments, a beam scanner may comprise a nanophotonics chip to provide a scanned output beam. The nanophotonics chip comprises a substrate, a grating in-coupler formed in the substrate to couple a beam from a light source into the substrate, a modulator to modulate the beam, and a photonic crystal (PC) superprism to provide a scanned output beam that is scanned in response to the modulated beam.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: February 25, 2014
    Assignee: Microvision, Inc.
    Inventors: Wyatt O. Davis, Taha Masood
  • Publication number: 20140043672
    Abstract: A fail-safe electro-active lens is presented in which the lens includes a substrate having a diffractive relief surface and an electro-active material in optical communication with the substrate. The electro-active material can include a nematic liquid crystal host. The refractive index of the substrate is equal to the average refractive index of the liquid crystal at a wavelength in the blue light spectrum.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 13, 2014
    Applicant: PixelOptics, Inc.
    Inventors: Roger Clarke, Joshua N. Haddock
  • Patent number: 8634680
    Abstract: The wavelength control device comprises a first Mach-Zehnder filter which receives a first optical signal and outputs an optical signal having a predetermined wavelength, a second Mach-Zehnder filter which receives a second optical signal and outputs an optical signal having a predetermined wavelength, a heating unit heating respective parts of either one of the waveguides of the first and second Mach-Zehnder filters, a first wavelength detecting unit which receives an optical signal from the first Mach-Zehnder filter and detects a wavelength thereof, a second wavelength detecting unit which receives an optical signal from the second Mach-Zehnder filter and detects a wavelength thereof, a power control unit which controls power supplied to the heating unit based on the wavelength received from the first wavelength detecting unit, and an output unit which outputs a wavelength value based on the wavelength received from the second wavelength detecting unit.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: January 21, 2014
    Assignee: NEC Corporation
    Inventor: Noriyoshi Oku
  • Publication number: 20140009819
    Abstract: A stereoscopic image control module that can be disposed on a display module to form a stereoscopic image display module is provided. The stereoscopic image control module includes a first substrate, a touch composite layer, and a grating composite layer. The first substrate has a first surface and a second surface opposite to the first surface, and the touch composite layer is disposed on at least one of the first surface and the second surface and includes a plurality of touch electrodes. The grating composite layer is disposed on the second surface and includes a plurality of grating control electrodes and a grating layer, wherein the grating control electrodes change a polarity of the grating layer to determine a display mode.
    Type: Application
    Filed: July 5, 2013
    Publication date: January 9, 2014
    Inventors: Hsu-Ho WU, Chia Hua YU, I Fang WANG, Mu-Kai KANG, Heng-Cheng TSENG
  • Patent number: 8623191
    Abstract: A device and method for displaying grey levels on electronic paper is provided. According to various embodiments, a system for electronic paper can include an electret substrate embedded with at least one first capsule containing a first plurality of charged pigment particles and at least one second capsule containing a second plurality of charged pigment particles. The system can further include a first electrode interfacing with one side of the electret substrate and a second electrode interfacing with a second side of the electret substrate. The first plurality of charged pigment particles can move in the direction of one of the first and second electrodes having a polarity that is opposite to that of the first plurality of the charged pigment particles in response to a voltage applied to the first and second electrodes that is greater than a first threshold.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: January 7, 2014
    Assignee: Honeywell International Inc.
    Inventor: Andrei Cernasov
  • Publication number: 20130335649
    Abstract: An optical component (1) is switchable between a directional mode and a 2-D mode. The optical component (1) comprising a lens array and an electro-optic layer, for example a liquid crystal layer, disposed in the path of light through the lens array. In the 2-D display mode the lens array has an optical effect on light passing through the component and the electro-optic layer at least partially nullifies the effect. For example the electro-optic layer may, in the 2-D display mode, scatter light or diverge light so as to nullify the focusing effect of the lens array. The optical component (1) may be disposed in the path of light through an image display panel (2) to form a display that may be switched between a directional display mode, eg a 3-D display mode, and a 2-D display mode by suitably switching the optical component (1).
    Type: Application
    Filed: March 6, 2012
    Publication date: December 19, 2013
    Inventors: Jonathan Mather, Nathan James Smith
  • Publication number: 20130321899
    Abstract: A display comprising an observer window, which in 3D and/or 2D representation mode of a 3D scene can be adapted to changing eye positions. Several observers can use the display simultaneously. The display includes a light modulation device having an actuatable diffraction unit and a controllable spatial light modulator, in which a 3D scene is coded in an actuatable manner, and a control unit. An observer window can be generated using coherent light beams on alternating eye positions. The diffraction unit includes at least electrodes and a controllable material into which a prism and/or lens function and/or scatter function can be written as a diffraction grating with a phase progression in an at least one-dimensionally controllable manner.
    Type: Application
    Filed: December 9, 2011
    Publication date: December 5, 2013
    Inventor: Ralf Haussler