Light Control Surface Forms Image On Projected Light Beam Patents (Class 359/292)
  • Patent number: 9864188
    Abstract: A method of forming a micro-electromechanical systems (MEMS) pixel, such as a DMD type pixel, by forming a substrate having a non-planar upper surface, and depositing a photoresist spacer layer upon the substrate. The spacer layer is exposed to a grey-scale lithographic mask to shape an upper surface of the spacer layer. A control member is formed upon the planarized spacer layer, and an image member is formed over the control member. The image member is configured to be positioned as a function of the control member to form a spatial light modulator (SLM). The spacer layer is planarized by masking a selected portion of the spacer layer with a grey-scale lithographic mask to remove binge in the selected portion.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: January 9, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Patrick I. Oden, James C. Baker, Sandra Zheng, William C. McDonald, Lance W. Barron
  • Patent number: 9658447
    Abstract: A DMD illumination system having multiple illumination sources. A DMD illumination system is provided that includes a plurality of illumination sources, each of the illumination sources directing light onto the digital micro-mirror device corresponding to a respective position of an array of micro-mirrors, each illumination source being positioned to cause reflected light from the array of micro-mirrors to be projected out of the system, and control circuitry coupled to the plurality of illumination sources and to the digital micro-mirror device configured for controlling the position of the array of micro-mirrors and further configured for providing control signals for turning each of the plurality of illumination sources on and off, so that the light from the plurality of illumination sources strikes the array of micro-mirrors and the light is reflected from the digital micro-mirror device and out of the system. Methods are also disclosed.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: May 23, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Vikrant R. Bhakta
  • Patent number: 9625652
    Abstract: A micro-electro-mechanical systems (MEMS) mirror array can be constructed using sub-dies that each includes two or more MEMS mirrors. In some implementations, an optical cross-connect system includes a first MEMS mirror array that includes first mirror units. Each first mirror unit can include a first substrate and two or more first MEMS mirrors supported by the first substrate. Each first substrate can be independent from each other first substrate. The cross-connect system can include a second MEMS mirror array that includes second mirror units. Each second mirror unit can include a second substrate and two or more second MEMS mirrors supported by the second substrate. Each second substrate can be independent from each other second substrate.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: April 18, 2017
    Assignee: Google Inc.
    Inventor: Kevin Yasumura
  • Patent number: 9568727
    Abstract: The subject matter disclosed herein relates to reduction of effective voltage drops within pixels in active matrix displays such as electrowetting display devices. The electrowetting display device comprises a plurality of pixel areas, wherein each pixel area comprises a hydrophobic surface, a first fluid and a second fluid on the hydrophobic surface, wherein the first fluid is immiscible with the second fluid, and a pixel electrode under the hydrophobic surface, wherein the pixel electrode has a substantially U-shape. A thin film transistor is coupled to the pixel electrode and a voltage source. Voltage via the thin film transistor and the voltage source applied to the hydrophobic surface via the pixel electrode causes the hydrophobic surface to become more hydrophobilic to thereby move the second fluid onto the hydrophobic surface to thereby substantially displace the first fluid on the hydrophobic surface.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: February 14, 2017
    Assignee: Amazon Technologies, Inc.
    Inventor: Pavel Novoselov
  • Patent number: 9488826
    Abstract: Disclosed is an electrowetting display device including a plurality pixels. Each pixel includes a pixel electrode, a hydrophobic layer, a hydrophobic fluid, and a bank adapted to limit the range of movement of the hydrophobic fluid. The bank has a hydrophobic bank surface and a hydrophilic bank surface, which face each other. The hydrophobic fluid is moved from the hydrophilic bank surface towards the hydrophobic bank surface by the application of a voltage to the pixel electrode.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: November 8, 2016
    Assignee: Amazon Technologies, Inc.
    Inventors: Sang-Min Shin, Woo-Song Kim, Chang-Ku Hua, Soo-Jin Park, Mun-Soo Park
  • Patent number: 9448484
    Abstract: A method of forming a micro-electromechanical systems (MEMS) pixel, such as a DMD-type pixel, by depositing a photoresist spacer layer upon a substrate. The photoresist spacer layer is exposed to a grey-scale lithographic mask to shape an upper surface of the photoresist spacer layer. A control member is formed upon the shaped spacer layer, and has a sloped portion configured to maximize energy density. An image member is configured to be positioned as a function of the control member to form a spatial light modulator (SLM).
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: September 20, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Patrick I. Oden, James C. Baker, Sandra Zheng, William C. McDonald, Lance W. Barron
  • Patent number: 9329450
    Abstract: A display device includes a first bitable display, a second display, and a bitable electrochromic member sandwiched between the first bitable display and the second display. The first bitable display is switchable between a transparent status and a displaying status. The electrochromic member is switchable between a transparent status and a color status under predetermined voltage, with a response time of the second display being less than 30 milliseconds.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: May 3, 2016
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Po-Chou Chen
  • Patent number: 9182587
    Abstract: The invention relates, in various aspects, to systems and methods for MEMS actuated displays that can be driven at high speeds and at low voltages for improved image quality and reduced power consumption.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: November 10, 2015
    Assignee: Pixtronix, Inc.
    Inventors: Timothy J. Brosnihan, Mark B. Andersson
  • Publication number: 20150146278
    Abstract: There is provided an optical arrangement comprising a digital micromirror device having a plurality of individually adjustable mirrors, a mirror pair formed from a convex minor and a concave minor having a common centre of curvature, the concave mirror having a greater radius than the convex mirror, characterised in that a collimated space is immediately adjacent the convex minor, and the concave mirror is offset from the convex mirror so as to be capable of forming an image at an effective focal length of the mirror pair. The convex minor and the concave mirror have radii substantially in the proportion 2.5:1, the concave mirror having the greater radius. A confocal microscope using such an arrangement is also provided.
    Type: Application
    Filed: October 14, 2014
    Publication date: May 28, 2015
    Inventor: Martin Thomas
  • Publication number: 20150146183
    Abstract: An illumination system of a microlithographic projection exposure apparatus includes an optical integrator having a plurality of light entrance facets each being associated with a secondary light source. A spatial light modulator has a light exit surface and transmit or to reflect impinging projection light in a spatially resolved manner. A pupil forming unit directs projection light on the spatial light modulator. An objective images the light exit surface of the spatial light modulator onto the light entrance facets of the optical integrator. The light exit surface of the optical light modulator includes groups of object areas being separated by areas that are not imaged on the light entrance facets. The objective combines images of the object areas so that the images of the object areas abut on the optical integrator.
    Type: Application
    Filed: November 17, 2014
    Publication date: May 28, 2015
    Inventors: Markus Deguenther, Vladimir Davydenko, Thomas Korb, Frank Schlesener, Stefanie Hilt, Wolfgang Hoegele
  • Publication number: 20150138625
    Abstract: A projection optical system for use in an image display apparatus having an illumination optical system applying light from a light source, and an image display device receiving the light from the illumination optical system to form a projection image includes a projector lens composed of plural lenses, a first mirror, and a second mirror formed of a concave mirror. The projection optical system is configured to project the projection image onto a projection surface. A projection luminous flux passing through the projector lens to be incident on the first mirror is a luminous flux exhibiting divergence. The projection luminous flux reflected off the second mirror after having reflected off the first mirror is converged once, and the once converged projection luminous flux is projected onto the projection surface. A lens surface of a lens located closest to the first mirror among the lenses of the projector lens is convex.
    Type: Application
    Filed: January 28, 2015
    Publication date: May 21, 2015
    Inventor: Hibiki TATSUNO
  • Patent number: 9036243
    Abstract: On/off digital drive signals are used to create arbitrary spatial and temporal ribbon movement patterns in MEMS ribbon arrays.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: May 19, 2015
    Assignee: Alces Technology, Inc.
    Inventors: David M Bloom, Matthew A Leone
  • Patent number: 9036245
    Abstract: A lighting system operating using a digital mirror as its operative device. The digital mirror is used to shape the light which is a passed through advanced optical devices in order to produce an output.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: May 19, 2015
    Assignee: Production Resource Group, LLC
    Inventors: William Hewlett, Ian Clarke, Nigel Evans, Richard Parker, Mark A. Hunt, Michael Hughes
  • Patent number: 9030391
    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for accurately positioning a movable conductive layer of a reflective display element. In one aspect, an initial position of the movable conductive layer with respect to at least one or more fixed conductive layers is sensed. A charging voltage may be determined based at least in part on the initial position. The charging voltage may be applied to the movable conductive layer.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: May 12, 2015
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: John H. Hong, Chong U. Lee, Cheonhong Kim, Edward K. Chan
  • Patent number: 9019587
    Abstract: A display device provided with an MEMS light valve, comprising: a substrate, a fixed grating located on the substrate, an MEMS light valve for controlling the opening and closing of the fixed grating; a guide is disposed on the substrate. The MEMS light valve comprises: a movable grating, a movable electrode and fixed electrodes; the moveable grating is located in the guide and is electrically connected to the guide when contacting the guide; one end of the movable electrode is fixedly connected with the movable grating, and the other end is suspended; and the fixed electrodes and the movable electrode form a capacitor. When a potential difference forms between the fixed electrodes and the movable electrode, the movable electrode drives the movable grating to move in the guide, thereby opening and closing the fixed grating. Therefore, the MEMS light valve sensitivity can be enhanced and reliability is improved.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: April 28, 2015
    Assignee: Lexvu Opto Microelectronics Technology (Shanghai) Ltd
    Inventors: Jianhong Mao, Deming Tang
  • Patent number: 9001412
    Abstract: A microelectromechanical (MEMS) device includes a substrate, a movable element over the substrate, and an actuation electrode above the movable element. The movable element includes a deformable layer and a reflective element. The deformable layer is spaced from the reflective element.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: April 7, 2015
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Clarence Chui, William Cummings, Brian James Gally, Lior Kogut, Ming-Hau Tung, Yeh-Jiun Tung, Chih-Wei Chiang, Denis Endisch
  • Publication number: 20150070750
    Abstract: Some implementations described herein involve defining a viewing angle range, also referred to herein as a viewing cone. The viewing cone may be produced by an array of optical fibers on a display. The optical fiber array may include tapered optical fibers that are capable of increasing the amount of light transmitted through the optical fiber array. The optical fiber array may be a graded index optical fiber array, wherein the refractive index of the optical fiber cores varies along the axis of the optical fibers.
    Type: Application
    Filed: October 17, 2013
    Publication date: March 12, 2015
    Applicant: QUALCOMM MEMS Technologies, Inc.
    Inventors: John H. Hong, Jian J. Ma, Bing Wen, Tallis Y. Chang
  • Patent number: 8970939
    Abstract: A multi-state light modulator comprises a first reflector. A first electrode is positioned at a distance from the first reflector. A second reflector is positioned between the first reflector and the first electrode. The second reflector is movable between an undriven position, a first driven position, and a second driven position, each having a corresponding distance from the first reflector. In one embodiment, the three positions correspond to reflecting white light, being non-reflective, and reflecting a selected color of light. Another embodiment is a method of making the light modulator. Another embodiment is a display including the light modulator.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: March 3, 2015
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Clarence Chui, William J. Cummings, Brian J. Gally
  • Publication number: 20150002766
    Abstract: Methods and systems are described herein which produce polarization-independent full color images suitable for rear-projection television sets and other multimedia displays. The system uses illumination with R, G, B light from two different light sources for each color. A viewer wears glasses with narrowband optical filters, preferably holographic filters. The R, G, B light from the light sources is slightly offset at each of the 3 emission wavelengths, with one set of R, G, B light being filtered by the holographic filter in front of the left eye of the, and the other set of R, G, B light being filtered by the holographic filter in front of the viewer's right eye.
    Type: Application
    Filed: May 19, 2014
    Publication date: January 1, 2015
    Applicant: Corporation for Laser Optics Research
    Inventor: Masayuki Karakawa
  • Patent number: 8917439
    Abstract: The present invention is directed to a color display comprising an electrophoretic fluid which comprises one or two types of pigment particles dispersed in a clear and colorless or clear and colored solvent, wherein said electrophoretic fluid is sandwiched between a common electrode and a plurality of driving electrodes. The driving electrodes are kept at a certain distance in order to expose a background layer.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: December 23, 2014
    Assignee: E Ink California, LLC
    Inventors: Ming Wang, Craig Lin, Roman Ivanov, Xiaojia Zhang, Robert A. Sprague
  • Publication number: 20140320949
    Abstract: Exemplary embodiments provide a projection-type display apparatus, which can address or realize a reduction in weight and size, a reduction in power consumption, and a reduction in noise, and address or realize a reduction in price, and a control method for the projection-type display apparatus, as well as a control program for the projection-type display apparatus. The projection-type display apparatus includes a solid-state light source that emits light, a mirror device that controls an emitting direction of the incident light to thereby subject the incident light to temporal modulation, and a projecting device that projects the modulated light.
    Type: Application
    Filed: June 10, 2014
    Publication date: October 30, 2014
    Applicant: Seiko Epson Corporation
    Inventors: Yasunaga MIYAZAWA, Hiroshi HASEGAWA
  • Patent number: 8873128
    Abstract: A micromechanical mirror arrangement comprising a mirror plate (1) which forms a translation mirror, which is connected via at least one holding element (2), preferably two or more holding elements, to a frame structure (3) and is movable in translation relative to this frame structure, characterized in that the connection region (4) of at least one holding element (2), preferably of all holding elements, with the mirror plate (1) is arranged inwardly offset, viewed from the outer margin (5) of the mirror plate toward to the center (6) of the mirror plate.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: October 28, 2014
    Assignees: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V., Technische Universitaet Dresden
    Inventors: Holger Conrad, Thomas Grasshoff, Denis Jung, Thilo Sandner
  • Patent number: 8867115
    Abstract: Light emitting elements in an illumination unit of a display may be blanked during updates of pixels of a spatial light modulator (SLM). Updates of pixels in different segments of the SLM may be coordinated with blanking of corresponding segments of the illumination unit. Updating of segments of a light source (30A-30D) may be coordinated so that not all segments are updated in each frame (34A-37D) of a video.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: October 21, 2014
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Steve Margerm, Neil W. Messmer
  • Patent number: 8854281
    Abstract: A Head Up Display (HUD), comprising: an image display unit, to generate input images; a virtual image generation unit, to receive said input images and generate at least a virtual image; a rotation mechanism, used to make said virtual image generation unit to change its projection angle, to project virtual images to a plurality of transmission mirrors; and a plurality of transmission mirrors, used to receive said virtual images and reflect them into a large area virtual image. Advantage of said HUD is that, size of lens and mirrors is reduced, so said HUD is miniaturized, while realizing large area image display, such that information frame of vehicle match that of outside view, hereby solving problems of single optical route display device of the prior art, that is only capable of displaying a small area image rather than a large area image.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: October 7, 2014
    Assignee: Automotive Research & Test Center
    Inventors: Kevin Ho, Jih-Tao Hsu, Chih-Bin Chiang
  • Patent number: 8848269
    Abstract: According to the present invention there is provided a method of projecting an image, the method comprising the steps of, providing light signal which is configured such that it can be projected onto a display surface to display an image; oscillating a first reflective surface, to scan the light signal over the display surface, using an actuator which is in operable co-operation with the first reflective surface, by applying a first actuation signal to the first reflective surface, wherein a rise time or fall time of the first actuation signal is inversely proportional to a resonant frequency of oscillation of the first reflective surface.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: September 30, 2014
    Assignee: Lemoptix SA
    Inventors: Lucio Kilcher, Nicolas Abele
  • Patent number: 8842356
    Abstract: A micromechanical device includes a micromechanical functional structure and an electromagnetic radiation heating associated with the micromechanical functional structure, which is formed to cause a spatially and temporally defined temperature or a spatially and temporally defined temperature course in the micromechanical functional structure.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: September 23, 2014
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Thilo Sandner, Harald Schenk, Joerg Heber, Thomas Klose, Andreas Bergmann, Christian Gerwig, Thomas Knieling
  • Patent number: 8827464
    Abstract: A projection display device includes: a light source unit including light sources emitting light in a plurality of colors, condenser lenses and a color combining optical element; a total reflection prism that totally reflects a combined light flux from the color combining optical element so as to be guided to an image forming unit; and a projection lens. At least one of; an entry surface of the color combining optical element through which substantially parallel light fluxes from the condenser lenses enter, an exit surface of the color combining optical element through which the combined light flux exists, and an entry surface of the total reflection prism through which the combined light flux enters, is formed as a free curved surface where a shape of a section of the combined light flux is altered so as to be matched with a shape of an outline of the display area.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: September 9, 2014
    Assignee: Nikon Corporation
    Inventor: Aiko Namikawa
  • Publication number: 20140240813
    Abstract: This disclosure provides systems, methods and apparatus for enhancing the brightness and/or contrast ratio of display devices. In one aspect, the display devices can include an annular diffuser that is configured to scatter light into a ring shaped region. The annular diffuser can include a plurality of axicon lenses or holographic features. The reflective display can include an annular diffuser to shift the direction along which most of the modulated light is scattered away from the direction along which light is specularly reflected by the display devices to reduce specular glare and enhance brightness and/or contrast ratio.
    Type: Application
    Filed: May 5, 2014
    Publication date: August 28, 2014
    Applicant: QUALCOMM MEMS Technologies, Inc.
    Inventors: Jian Ma, John Hyunchul Hong, Bing Wen
  • Publication number: 20140218786
    Abstract: This disclosure provides systems, methods and apparatus for providing white light color output from an electromechanical systems (EMS) device with reduced likelihood of stiction. In one aspect, interferometric modulators are configured to provide a white color output while having a non-zero modulator gap dimension. Such a feature can reduce problems associated with zero modulator gap dimensions such as stiction. Various methodologies can be used to yield such a non-zero modulator gap and a white color output. In some implementations, for example, an optical element that introduced wavelength dependent phase shift is used. In some implementations this wavelength dependent phase shifting optical element includes a stack of color filters, a hologram, a diffraction grating, or layers of material having specific thicknesses and wavelength dependent indices of refraction.
    Type: Application
    Filed: January 31, 2014
    Publication date: August 7, 2014
    Applicant: QUALCOMM MEMS Technologies, Inc.
    Inventors: John H. Hong, Marc Maurice Mignard
  • Patent number: 8791891
    Abstract: The present invention relates to an electrowetting system comprising an electrowetting element, a driver stage for applying a voltage to the element, and a switch connecting the electrowetting element to an output of the driver stage. The element comprises a first fluid and a second, immiscible fluid. The instantaneous position of the fluids is dependent on the voltage applied to the element, the voltage being set when the switch is closed. The voltage on the element is substantially maintained during a holding state longer than 70 ms when the switch is open.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: July 29, 2014
    Assignee: Liquavista B.V.
    Inventors: Roy Van Dijk, Bokke Johannes Feenstra, Anthony John Slack, Henricus Petronella Maria Derckx
  • Patent number: 8780435
    Abstract: An electrowetting display device includes a base substrate, an electrowetting layer having first and second fluids immiscible with each other, a wall to define a pixel area, a hydrophobic layer in the pixel area, and an electronic device to control the electrowetting layer. A method of manufacturing the electrowetting display device is also provided.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: July 15, 2014
    Assignee: Liquavista B.V.
    Inventors: DaeJin Park, Jung-Hun Noh, Boram Lee, Joonyoup Kim, Donghwa Shin
  • Patent number: 8767270
    Abstract: An imaging (e.g., lithographic) apparatus for generating an elongated concentrated scan image on an imaging surface of a scan structure (e.g., a drum cylinder) that moves in a process (cross-scan) direction. The apparatus includes a spatial light modulator having a two-dimensional array of light modulating elements for modulating a two-dimensional light field in response to predetermined scan image data, and an anamorphic optical system is used to anamorphically image and concentrate the modulated light onto an elongated imaging region defined on the imaging surface. To avoid smearing, movement of the imaging surface is synchronized by an image position controller with the modulated states of the light modulating elements such that image features of the scan image are scrolled (moved in the cross-scan direction) at the same rate as the cross-scan movement of the imaging surface, whereby the features remain coincident with the same portion of the imaging surface.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: July 1, 2014
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Douglas N. Curry, Timothy David Stowe, Patrick Y. Maeda
  • Patent number: 8735225
    Abstract: Methods and systems for packaging MEMS devices such as interferometric modulator arrays are disclosed. One embodiment of a MEMS device package structure includes a seal with a chemically reactant getter. Another embodiment of a MEMS device package comprises a primary seal with a getter, and a secondary seal proximate an outer periphery of the primary seal. Yet another embodiment of a MEMS device package comprises a getter positioned inside the MEMS device package and proximate an inner periphery of the package seal.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: May 27, 2014
    Assignee: Qualcomm Mems Technologies, Inc.
    Inventors: Lauren Palmateer, William J. Cummings, Brian Gally, Clarence Chui, Manish Kothari
  • Patent number: 8730225
    Abstract: An electro-wetting display device includes a polar fluid layer, a pixel electrode, a non-polar black fluid layer, a driving electrode, and a color fluid layer. The non-polar black fluid is deformed by a voltage difference between a voltage applied to the pixel electrode and a voltage applied to the polar fluid layer. the non-polar color fluid is deformed by a voltage difference between a voltage applied to the driving electrode and a voltage applied to the polar fluid layer. The driving electrode receives a voltage having a voltage level varied according to a display mode.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: May 20, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Han Bae, Tae Hyung Hwang, JungWoo Park, Kyungtae Chae, Hyung-II Jeon, Seok-Joon Hong
  • Patent number: 8730555
    Abstract: An electrowetting display device comprises a plurality of picture elements (2) having a first support plate (5) including a surface (68) and a second support plate. A space (10) of a picture element between the surface of the first support plate and the second support plate includes at least one first fluid and a second fluid immiscible with each other, the second fluid being electroconductive or polar. The first support plate includes an electrode (46) for applying an electric field in the picture element. It also includes a layer (44) arranged on a side of the electrode facing away from said space. The layer forms an electronic component (33) for applying a voltage to the electrode. The electrode comprises a height difference (86) corresponding to a thickness of the layer (44). The height difference causes an inhomogeneous electric field in the space, providing a preferred direction of motion of the first fluid on application of the electric field.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: May 20, 2014
    Assignee: Liquavista B.V.
    Inventors: Jo Aubert, Nicolas Bergeron, Roy Van Dijk, Andrea Giraldo
  • Patent number: 8730557
    Abstract: A series bias voltage increases the sensitivity of a MEMS ribbon to control signal voltages. This effect is obtained because of the nonlinear dependence of ribbon deflection on applied voltage. The resulting low-voltage operation of MEMS ribbons makes them more compatible with high speed electronics.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: May 20, 2014
    Assignee: Alces Technology, Inc.
    Inventors: David M Bloom, Matthew A Leone
  • Patent number: 8717660
    Abstract: This disclosure provides systems, methods and apparatus for enhancing the brightness and/or contrast ratio of display devices. In one aspect, the display devices can include an annular diffuser that is configured to scatter light into a ring shaped region. The annular diffuser can include a plurality of axicon lenses or holographic features. The reflective display can include an annular diffuser to shift the direction along which most of the modulated light is scattered away from the direction along which light is specularly reflected by the display devices to reduce specular glare and enhance brightness and/or contrast ratio.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: May 6, 2014
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Jian J. Ma, John H. Hong, Bing Wen
  • Patent number: 8711322
    Abstract: Electrowetting display devices are presented. The electrowetting display includes a first substrate and an opposing second substrate with a transparent polar fluid layer and an opaque non-polar fluid layer insoluble with each other and interposed between the first and second substrates. A first transparent electrode is disposed on the first substrate. A second transparent electrode is disposed on the second substrate. A dielectric layer is disposed on the second transparent electrode. A reflective plate structure is interposed between the second transparent electrode and the second substrate, thereby defining a reflective region and a transmission region. A backlight plate is disposed on the back of the second substrate. During operation, the opaque non-polar fluid converges, therefore, exposing equal areas of reflective region and transmission region.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: April 29, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Wei-Yuan Cheng, Chih-Chun Hsiao, Jen-Chieh Yang, Kuo-Lung Lo
  • Patent number: 8693081
    Abstract: A device and method of making and using the same. The device includes first and second substrates that are spaced to define a fluid space. Polar and non-polar fluids occupy the fluid space. A first electrode, with a dielectric layer, is positioned on the first substrate and electrically coupled to at least one voltage source, which is configured to supply an electrical bias to the first electrode. The fluid space includes at least one fluid splitting structure that is configured to facilitate the movement of the non-polar fluid into a portion of the polar fluid. Fluid splitting structure assisted movement of the non-polar fluid splits the polar fluid.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: April 8, 2014
    Assignee: University of Cincinnati
    Inventors: Jason Heikenfeld, Matthew Hagedon, Kenneth Dean Andrew
  • Publication number: 20140085562
    Abstract: Brightness-by-column grayscale and spatial ?-? modulation grayscale allow grayscale patterns to be produced using a binary spatial light modulator as fast as the bright/dark switching speed.
    Type: Application
    Filed: September 20, 2013
    Publication date: March 27, 2014
    Applicant: ALCES TECHNOLOGY, INC.
    Inventors: David M. Bloom, Matthew A. Leone
  • Patent number: 8670172
    Abstract: An imaging method for generating a substantially one-dimensional scan line image using multiple spatial light modulators, to modulate a homogenous light field, and then anamorphically imaging and concentrating the modulated light to form the scan line image. The spatial light modulators include light modulating elements that are arranged in two-dimensional array and are individually adjustable to either pass/reflect received homogenous light portions to the anamorphic optical systems, or to block/redirect the homogenous light portions, thereby generating two-dimensional modulated light fields. Anamorphic optical systems are used to image and focus received modulated light field onto an associated substantially one-dimensional scan line portion on the scan structure.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: March 11, 2014
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Timothy David Stowe, Douglas N. Curry, Patrick Y. Maeda
  • 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
  • Publication number: 20140036345
    Abstract: The current disclosure shows how to make a fast switching array of mirrors for projection displays. Because the mirror does not have a via in the middle connecting to the underlying spring support, there is an improved contrast ratio that results from not having light scatter off the legs or vias like existing technologies. Because there are no supporting contacts, the mirror can be made smaller making smaller pixels that can be used to make higher density displays. In addition, because there is not restoring force from any supporting spring support, the mirror stays in place facing one or other direction due to adhesion. This means there is no need to use a voltage to hold the mirror in position. This means that less power is required to run the display.
    Type: Application
    Filed: July 15, 2013
    Publication date: February 6, 2014
    Applicant: CAVENDISH KINETICS INC.
    Inventors: Charles Gordon SMITH, Richard L. KNIPE
  • Patent number: 8643937
    Abstract: A DND device is disclosed. In one aspect, the device includes a nano-mirror (21), and an actuating module configured to move the nano-mirror in an upward and/or downward position. The actuating module has a cantilever mounted to a fixed structure, and at least one first electrode for moving the cantilever in an upward and/or downward position. Such DND devices may be arranged in a 2D array.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: February 4, 2014
    Assignee: IMEC
    Inventors: Luc Haspeslagh, Xavier Rottenberg, Veronique Rochus
  • Publication number: 20140009816
    Abstract: This disclosure provides systems, methods and apparatus for enhancing the brightness and/or contrast ratio of display devices. In one aspect, the display devices can include an annular diffuser that is configured to scatter light into a ring shaped region. The annular diffuser can include a plurality of axicon lenses or holographic features. The reflective display can include an annular diffuser to shift the direction along which most of the modulated light is scattered away from the direction along which light is specularly reflected by the display devices to reduce specular glare and enhance brightness and/or contrast ratio.
    Type: Application
    Filed: July 3, 2012
    Publication date: January 9, 2014
    Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.
    Inventors: Jian J. Ma, John H. Hong, Bing Wen
  • Patent number: 8596846
    Abstract: The frontlight illumination system is intended for enhancing illumination of a reflective display having pixels arranged in a matrix pattern and using monochromatic laser lights as light sources. The unit contains a network of light-distributing planar ridge waveguides with holograms arranged in a matrix pattern that corresponds to the matrix pattern of the reflective display. The light-distributing holograms of the system are formed on opposite sides of each core of respective light-distributing planar ridge waveguides. Neighboring holograms located on opposite sides of the core are combined into pairs and are arranged on each core in positions at which they interact with a predetermined phase shift that doubles the intensity of light directed to the reflective display and extinguishes light directed to the external surface.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: December 3, 2013
    Assignee: Nano-Optic Devices, LLC
    Inventors: Vladimir Yankov, Alexander Goltsov, Igor Ivonin, Leonid Velikov
  • Patent number: 8553342
    Abstract: Disclosed herein is a camera module having a MEMS actuator and a driving method thereof, the camera module with a MEMS actuator, including, a MEMS actuator moving a lens with electrostatic force, for focus adjustment, an electrostatic capacity measurement unit measuring electrostatic capacity produced in the MEMS actuator, a foreign substance determination unit determining if foreign substances exist in the MEMS actuator, and outputting a trigger signal when a foreign substance exists, and a MEMS actuator drive unit driving the MEMS actuator to a reiterated vibration using the trigger signal outputted from the foreign substance determination unit.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: October 8, 2013
    Assignee: LG Innotek Co., Ltd.
    Inventor: Junghyun Lee
  • Publication number: 20130242272
    Abstract: In an illumination optical system for a DMD type projector, the TIR prism is configured such that a projection line, which is a normal to the total reflection surface vertically projected on the DMD surface, forms an angle other than 90° with a micromirror turning axis, an exit light projection line, which is a principal ray of light beam exits from the total reflection surface vertically projected on the DMD surface, forms an angle of 90° with the micromirror turning axis, and an incident light projection line, which is a principal ray of light beam incident on the total reflection surface vertically projected on the DMD surface, is located on the same side as the exit light projection line with respect to a straight line passing through an end point of the incident light projection line and extending parallel to a long side of the DMD.
    Type: Application
    Filed: May 1, 2013
    Publication date: September 19, 2013
    Applicant: FUJIFILM Corporation
    Inventor: Tomoyuki BABA
  • Patent number: 8520285
    Abstract: This methods and devices described herein relate to displays and methods of manufacturing cold seal fluid-filled displays, including MEMS. The fluid substantially surrounds the moving components of the MEMS display to reduce the effects of stiction and to improve the optical and electromechanical performance of the display. The invention relates to a method for sealing a MEMS display at a lower temperature such that a vapor bubble does not formforms only at temperatures about 15° C. to about 20° C. below the seal temperature. In some embodiments, the MEMS display apparatus includes a first substrate, a second substrate separated from the first substrate by a gap and supporting an array of light modulators, a fluid substantially filling the gap, a plurality of spacers within the gap, and a sealing material joining the first substrate to the second substrate.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: August 27, 2013
    Assignee: Pixtronix, Inc.
    Inventors: Eugene E. Fike, III, Joyce H. Wu, Jasper Lodewyk Steyn, Jignesh Gandhi
  • Patent number: 8514479
    Abstract: An electro-wetting display includes a first substrate, a second substrate which faces the first substrate, and a fluid layer between the first and second substrates. The first substrate includes a plurality of gate lines, a plurality of data lines, and a plurality of pixels connected to the gate lines and the data lines. A fluid layer includes a first fluid layer having a color and a second fluid layer which is transparent. Each pixel includes a switching device, a pixel electrode in connection with the switching device, and a spacing electrode. The switching device is connected to an i-th gate line of the gate lines and a j-th data line of the data lines. The spacing electrode is adjacent to a side of the pixel electrode and in connection with a (i?1)th gate line of the gate lines.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: August 20, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joo-Han Bae, Tae Hyung Hwang, Kyungtae Chae, Sang-Myoung Lee, Seok-Joon Hong