Plural Mechanically Movable Display Elements Patents (Class 345/108)
  • Patent number: 7812809
    Abstract: The display device includes a backlight unit including a field sequential light source operated using a sequential partition method and an optical shutter using an electrowetting phenomenon disposed on a light emitting surface of the backlight unit and switching light outputted from the backlight unit.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: October 12, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-young Choi, Jee-hwan Jang, Byung-do Oh
  • Patent number: 7791586
    Abstract: An entertainment system includes a housing adapted for being mounted within a seat of a vehicle and a media unit housed within the housing and pivotably coupled to the housing. The housing includes at least one of a groove formed within a sidewall of the housing adapted to engage a movable latch of the media unit, a first flexible member provided on a sidewall of the housing to engage a portion of the media unit for snapping the media unit into place within the housing, or a second flexible member disposed in a face of the housing to provide a spring force on the media unit in a direction away from the housing.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: September 7, 2010
    Assignee: Audiovox Corporation
    Inventor: David M. Shalam
  • Patent number: 7787173
    Abstract: A display having a plurality of reflective display elements. In one embodiment, the display elements comprise at least one electrode having a plurality of active areas. In one embodiment, at least two of the sizes of the active areas are different with respect to each other, e.g., they are non-uniform in size. The interferometric modulators have a plurality of states, wherein selected ones of the interferometric modulators are configured to be actuated depending differing electrostatic forces in the interferometric modulators. The electrostatic forces in the interferometric modulators are different at least in part due to variations in the sizes of the active areas of the electrodes.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: August 31, 2010
    Assignee: Qualcomm Mems Technologies, Inc.
    Inventor: Clarence Chui
  • Patent number: 7782293
    Abstract: Embodiments include devices and methods for wavelength filtering. For example, one embodiment includes a display comprising a plurality of the display elements each comprising a movable reflector, a first partial reflector, and a second partial reflector. The first partial reflector is positioned at a first distance from the movable reflector and forms a first optical resonant cavity therebetween. The second partial reflector is positioned at a second distance from said first partial reflector and forming a second optical resonant cavity therebetween. In various embodiments, the movable reflector is movable with respect to the first partial reflector to alter the first optical cavity. Other embodiments include a method of making devices.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: August 24, 2010
    Assignee: Qualcomm MEMS Technologies, Inc.
    Inventors: Brian J. Gally, William J. Cummings
  • Patent number: 7777715
    Abstract: A display array which can reduce the row connections between the display and the driver circuit and methods of manufacturing and operating the same are disclosed. In one embodiment, a display device comprises an array of MEMS display elements and a plurality of voltage dividers coupled to the array and configured to provide row output voltages to drive the array, wherein each row is connected to at least two inputs joined by a voltage divider.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: August 17, 2010
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventors: Clarence Chui, Alan Lewis, Marc M. Mignard
  • Patent number: 7768690
    Abstract: A transmissive backlit display is disclosed. In one aspect, the backlit display comprises a backlight and an array of transmissive interferometric modulators. Each interferometric modulator comprises a fixed and moving dielectric mirror stack. The interferometric modulators cause light within the desired wavelength range to be transmitted while reflecting at least a portion of the remaining light.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: August 3, 2010
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventor: Jeffrey B. Sampsell
  • Publication number: 20100141618
    Abstract: An active-matrix device includes a substrate; a plurality of pixel electrodes provided on a first surface of the substrate; a plurality of switching elements provided to correspond to each of the pixel electrodes, each of the switching elements including a fixed electrode connected to the each pixel electrode, a movable electrode mainly made of silicon and displaceably provided so as to contact with and separate from the fixed electrode, and a driving electrode provided to oppose the movable electrode via an electrostatic gap; a first wiring connected to the movable electrode; and a second wiring connected to the driving electrode, wherein a voltage is applied between the movable electrode and the driving electrode to generate an electrostatic attraction between the movable electrode and the driving electrode so as to displace the movable electrode such that the movable electrode contacts with the fixed electrode to electrically connect the first wiring to the pixel electrode.
    Type: Application
    Filed: February 17, 2010
    Publication date: June 10, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Isamu NAMOSE
  • Patent number: 7719500
    Abstract: A display is formed with a plurality of reflective display pixels arranged in a curvilinear configuration, and a plurality of electrodes, where each electrode is electrically coupled to two or more reflective display pixels. In some embodiments, the array is at least partially curvilinear. The reflective display pixels include interferometric modulators.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: May 18, 2010
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventor: Clarence Chui
  • Patent number: 7719747
    Abstract: An interferometric modulator includes a post structure comprising an optical element. In a preferred embodiment, the optical element in the post structure is a reflective element, e.g., a mirror. In another embodiment, the optical element in the post structure is an etalon, e.g., a dark etalon. The optical element in the post structure may decrease the amount of light that would otherwise be retroreflected from the post structure. In various embodiments, the optical element in the post structure increases the brightness of the interferometric modulator by redirecting light into the interferometric cavity. For example, in certain embodiments, the optical element in the post structure increases the backlighting of the interferometric modulator.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: May 18, 2010
    Assignee: Qualcomm Mems Technologies, Inc.
    Inventors: Ming-Hau Tung, Srinivasan Sethuraman
  • Patent number: 7714801
    Abstract: An electronic device, which comprises: at least two parts foldable in relation to each other, which can be turned into a first position and into a second position around a rotation axis; and a flexible display device, which extends over at least two foldable parts, covering them either entirely or partly. The flexible display device comprises: a folded position, to which the display device settles in the first position, and in which it folds around a first direction, which is parallel in relation to the rotation axis; and a curved position, to which the display device settles in the second position, and in which it curves around a second direction, which is transverse in relation to the rotation axis. A flexible display device can also be used with an electronic device.
    Type: Grant
    Filed: January 5, 2005
    Date of Patent: May 11, 2010
    Assignee: Nokia Corporation
    Inventor: Jyrki Kimmel
  • Patent number: 7710350
    Abstract: According to one embodiment, a method for providing position feedback for a device includes providing a photointerrupter having a light-emitting diode, a phototransistor, and an aperture between the light-emitting diode and the phototransistor. For a given size aperture, a current through the phototransistor is a function of a current through the light-emitting diode. The method also includes controlling the current through the light-emitting diode current such that a change in the effective aperture size results in a desired approximately proportional change in current through the phototransistor. While controlling the current through the light-emitting diode, a portion of the aperture is blocked by an arm that has a position indicative of the position of the device. The method also includes providing a signal indicative of the change in current through the photodiode as an indication of the change in position of the device.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: May 4, 2010
    Assignee: Texas Instruments Incorporated
    Inventor: Stephen W. Marshall
  • Patent number: 7702192
    Abstract: Systems and methods for driving a display of MEMS devices are disclosed. In one embodiment, a display device comprises an array of MEMS display elements, at least one test deflecting element, and a deflection sensing circuit connected to the test deflecting element, the deflection sensing circuit being configured to monitor deflection of the test deflecting element without actuating the test deflection element and to provide a signal indicative of one or more parameters affecting operation of the array of MEMS display elements based on the deflection.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: April 20, 2010
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventor: Jeffrey B. Sampsell
  • Patent number: 7701412
    Abstract: A scalable laser scanning angle apparatus and method of scaling a scanning angle using MEMS devices and elliptical mirrors includes disposing a first scanner at one focal point of an elliptical mirror and scanning the emitted light beam in a first direction at a first scanning angle toward a concave surface of the elliptical mirror such that the scanned light beam is directed toward the second focal point of the elliptical mirror, and scanning the light beam from the concave surface of the elliptical mirror in a second direction at a second scanning angle using a second scanner, wherein the second scanner outputs the light beam across a system scanning angle which corresponds to a combination of the first scanning angle and the second scanning angle. The scanning angle is scalable by repeatedly scanning the light beam at corresponding focal points of a predetermined number of elliptical mirrors, wherein the total scanning angle is scaled by a multiple of a number of times the light beam is scanned.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: April 20, 2010
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Ju-Hyun Lee, Youngchul Ko, Plisoo Ahn, Jinwoo Cho, Serafirnovich Pavel
  • Publication number: 20100039370
    Abstract: An Interferometric Modulator (IMod) is a microelectromechanical device for modulating light using interference. The colors of these devices may be determined in a spatial fashion, and their inherent color shift may be compensated for using several optical compensation mechanisms. Brightness, addressing, and driving of IMods may be accomplished in a variety of ways with appropriate packaging, and peripheral electronics which can be attached and/or fabricated using one of many techniques. The devices may be used in both embedded and directly perceived applications, the latter providing multiple viewing modes as well as a multitude of product concepts ranging in size from microscopic to architectural in scope.
    Type: Application
    Filed: February 9, 2009
    Publication date: February 18, 2010
    Applicant: IDC, LLC
    Inventor: Mark W. Miles
  • Patent number: 7663794
    Abstract: Interferometric modulators having a separable modulator architecture are disclosed having a reflective layer suspended from a flexible layer over a cavity. The interferometric modulators have one or more anti-tilt members that inhibit undesirable movement of the reflective layer, such as curling and/or tilting. The stabilization of the reflective layer by the anti-tilt members can improve the quality of the optical output of the interferometric modulators, as well as displays comprising such interferometric modulators.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: February 16, 2010
    Assignee: Qualcomm MEMS Technologies, Inc.
    Inventor: William J Cummings
  • Publication number: 20100026680
    Abstract: Charge balanced display data writing systems, apparatuses, and methods use write and hold cycles of opposite polarity during selected frame update periods. A release cycle may be provided to reduce the chance that a given display element will become stuck in an actuated state.
    Type: Application
    Filed: October 13, 2009
    Publication date: February 4, 2010
    Applicant: IDC, LLC
    Inventors: Clarence Chui, Manish Kothari
  • Patent number: 7652657
    Abstract: The present application describes a system and method for determining characteristics (e.g., exact band location, orientation and height and the spot shape and size of a single wavelength and the like) of an optical signal projected on a spatial light modulator. In an embodiment, images with sharper edges (i.e. clear boundary between ‘on’ pixels and ‘off’ pixels) on the spatial light modulator are used to obtain spectral information from a referenced broadband source. The spectral information can be used to determine the desired characteristics of optical signals projected on the spatial light modulator.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: January 26, 2010
    Assignee: Texas Instruments Incorporated
    Inventor: Benjamin Lowell Lee
  • Patent number: 7626581
    Abstract: Embodiments of an exemplary MEMS interferometric modulator comprise a movable layer and a fixed layer separated by an air gap. A driving scheme employs row/column actuation protocols which maintain voltages to the MEMS interferometric modulator that are above or below the voltage range necessary to place the MEMS interferometric modulator within a “hysteresis window” or “stability window.” Stable operation of the MEMS interferometric modulator is achieved by selecting mechanical design features that optimize the actuation and release times of the interferometric modulator. Some of the features affecting the release and actuation times include altering post spacing, altering internal stress or tension of the movable layer, altering the thickness or composition of the movable layer, altering the bulkiness of the tethers, perforating the movable layer and providing vias in the fixed layer.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: December 1, 2009
    Assignee: IDC, LLC
    Inventors: Clarence Chui, Manish Kothari
  • Patent number: 7619614
    Abstract: A three-dimensional optical mouse device with a Micromirror Array Lens (MMAL) is provided. To have the three-dimensional optical mouse system, a three-dimensional imaging device is used for detecting the motion of optical pointer or fingers of the user and gives a location of the pointer to computer working as a pointing device in three-dimension. This three-dimensional pointing system uses three-dimensional imaging device using MMAL with variable focal length.
    Type: Grant
    Filed: January 28, 2006
    Date of Patent: November 17, 2009
    Assignees: Angstrom, Inc., Stereo Display, Inc.
    Inventors: Sang Hyune Baek, Gyoung Il Cho, Cheong Soo Seo
  • Patent number: 7619809
    Abstract: A mirror assembly including an active lens and a reflective surface. The mirror assembly may change its refractive index when a voltage is applied to the active lens, thereby changing the field of view in the lens. Exemplary applications include a blind spot system in a motor vehicle, in which, upon sensing another vehicle in a driver's blind spot, the mirror assembly changes the driver's field of view to include the blind spot. Additional applications include a magnifying mirror for shaving or applying cosmetics.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: November 17, 2009
    Assignee: E-Vision, LLC
    Inventors: Ronald D. Blum, William Kokonaski, Dwight P. Duston, Youval Katzman
  • Patent number: 7616368
    Abstract: Improved apparatus and methods for displays are disclosed that utilize light concentration array between mechanical light modulators and the viewing surface of the display. The light concentration array includes an array of optical elements that concentrate light on respective ones of the light modulators to maximize the contrast ratio and off axis viewing of the display.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: November 10, 2009
    Assignee: Pixtronix, Inc.
    Inventor: Nesbitt W. Hagood, IV
  • Patent number: 7605969
    Abstract: An Interferometric Modulator (IMod) is a microelectromechanical device for modulating light using interference. The colors of these devices may be determined in a spatial fashion, and their inherent color shift may be compensated for using several optical compensation mechanisms. Brightness, addressing, and driving of IMods may be accomplished in a variety of ways with appropriate packaging, and peripheral electronics which can be attached and/or fabricated using one of many techniques. The devices may be used in both embedded and directly perceived applications, the latter providing multiple viewing modes as well as a multitude of product concepts ranging in size from microscopic to architectural in scope.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: October 20, 2009
    Assignee: IDC, LLC
    Inventor: Mark W. Miles
  • Patent number: 7602375
    Abstract: Charge balanced display data writing methods use write and hold cycles of opposite polarity during selected frame update periods. A release cycle may be provided to reduce the chance that a given display element will become stuck in an actuated state.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: October 13, 2009
    Assignee: IDC, LLC
    Inventors: Clarence Chui, Manish Kothari
  • Patent number: 7592901
    Abstract: There are provided an input means 2 that allows information to be input as touched by an operator, a vibration application means 3 disposed on a back side of the input means 2, and a control means 5. The input means 2 is a touch panel 6. The vibration application means 3 is shaped like a flexible sheet, and includes a plurality of actuators 17 arranged as vibration sources. Each of the actuators 17 includes a first electrode 13, a second electrode 14, and an insulating layer 15 is provided between the first electrode 13 and the second electrode 14 and containing a ferroelectric layer. The control means 5 drives a preset actuator 17 of the actuators 17 according to input from the control panel 6.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: September 22, 2009
    Assignee: Alps Electric Co., Ltd.
    Inventor: Hidetaka Furusho
  • Patent number: 7560299
    Abstract: Methods of writing display data to MEMS display elements are configured to minimize charge buildup and differential aging. The methods may include writing data with opposite polarities, and periodically releasing and/or actuating MEMS elements during the display updating process. Actuating MEMS elements with potential differences higher than those used during normal display data writing may also be utilized.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: July 14, 2009
    Assignee: IDC, LLC
    Inventor: William J. Cummings
  • Patent number: 7561140
    Abstract: Provided is a microcapsule magnetic migration display including microcapsules arrayed on a substrate. A dispersion liquid containing an oily dispersion medium having two components of light-absorptive magnetic particles and light-reflective non-magnetic particles dispersed therein is encapsulated in the microcapsules, and positions of the two components are allowed to vertically migrate by a magnetic field. The dispersion liquid is one or two or more kinds of oily liquids having a flash point of 70° C. or more, a volume density at 15° C. of 0.75 to 0.91 g/cm3, and a dynamic viscosity at 40° C. of 7 mm2/S or less, is added with 0.5 to 8.0 wt % of non-ionic surfactant with an HLB value of 5.0 or less, and is added with solid particles having a true specific gravity exceeding 1.0 and a particle diameter of 0.1 to 30 ?m, thereby adjusting the volume density thereof at 15° C. to 1.0 to 1.2 g/cm3.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: July 14, 2009
    Assignee: Japan Capsular Products, Inc.
    Inventor: Yasuyuki Kanno
  • Patent number: 7561334
    Abstract: Methods and apparatus for reducing back-glass deflection in an interferometric modulator display device are provided. In one embodiment, an interferometric modulator display is provided that includes a including a substrate, an optical stack formed on the substrate, a moveable reflective layer formed over the optical stack, and a backplate attached to the substrate. The moveable reflective layer includes one or more first posts extending therefrom, in which one or more of the first posts are operable to protect the moveable reflective layer by contacting at least a portion of the backplate if the backplate is deflected.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: July 14, 2009
    Assignee: QUALCOMM MEMS Technologies, Inc.
    Inventor: Qi Luo
  • Patent number: 7554711
    Abstract: An interferometric modulator comprising a substrate, a movable membrane and one or more stiction bumps disposed between the substrate and the movable membrane. The stiction bumps are configured to mitigate stiction between the substrate and the movable membrane.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: June 30, 2009
    Assignee: IDC, LLC.
    Inventor: Mark W. Miles
  • Patent number: 7551159
    Abstract: A method for sensing the actuation and/or release voltages of a microelectromechanical device include applying a varying voltage to the device and sensing its state and different voltage levels. In one embodiment, the device is part of a system comprising an array of interferometric modulators suitable for a display. The method can be used to compensate for temperature dependent changes in display pixel characteristics.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: June 23, 2009
    Assignee: IDC, LLC
    Inventors: Marc Mignard, Clarence Chui, Mithran C. Mathew, Jeffrey B. Sampsell
  • Publication number: 20090153941
    Abstract: Provided are a system and method for reducing failures due to hinge memory. The method, in one embodiment, includes providing a torsional element having an amount of hinge memory, wherein the hinge memory is at least partially created using an average operational temperature. The method, in this embodiment, further includes subjecting the torsional element having the hinge memory to a temperature equal to or greater than the average operational temperature while the torsional element is in a parked state for an amount of time to reduce the amount of the hinge memory.
    Type: Application
    Filed: December 17, 2007
    Publication date: June 18, 2009
    Applicant: Texas Instruments Incorporated
    Inventor: Patrick Ian Oden
  • Patent number: 7545550
    Abstract: Apparatus and methods of actuating MEMS display elements are disclosed. The disclosed embodiments can be incorporated into other drive schemes for MEMS display elements. In one embodiment, an apparatus for controlling a MEMS display element to display a frame of video data, said MEMS display element comprising a portion of an array of MEMS display elements, includes an array controller configured to assert a potential difference on said MEMS display element during a first portion of a frame display write process to place the MEMS display element in a first display state, and to assert a potential difference on said MEMS display element during a second portion of the frame display write process to place the MEMS display element in a second display state to display the frame of the video data, where the first display state is different from the second display state.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: June 9, 2009
    Assignee: IDC, LLC
    Inventors: Brian J. Gally, William J. Cummings
  • Patent number: 7532194
    Abstract: A display system uses a standardized display driver to provide row and column address voltages. The row and address column voltages are used by an array of interferometric elements through a voltage adjuster to adjust the row address voltages to provide adjusted row address voltages to the array of interferometric elements.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: May 12, 2009
    Assignee: IDC, LLC
    Inventor: Clarence Chui
  • Patent number: 7532195
    Abstract: A method and system for reducing power consumption in a display includes driving a display comprising a plurality of display elements characterized by a display state. In a first mode of operation, the display state of substantially all the display elements is periodically re-set so as to display a first series of image frames. Upon changing to a second mode of operation, a second mode of operations comprises re-setting the display state of only a portion of the display elements so as to display a second series of image frames at a display element resolution which is less than said display element resolution used to display said first series of image frames.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: May 12, 2009
    Assignee: IDC, LLC
    Inventor: Jeffrey B. Sampsell
  • Patent number: 7525541
    Abstract: Generating a three-dimensional image of a three-dimensional scene by generating projection data and projecting light rays based on the projection data to generate the three-dimensional image. Sampling of the data is based on at least one physical parameter associated with the projection of light rays by a projection system used to project the light rays.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: April 28, 2009
    Assignee: Actuality Systems, Inc.
    Inventors: Won Chun, Oliver Strider Cossairt
  • Patent number: 7525510
    Abstract: A sign structure having a display, movable member and computer means creates a unique vehicle for displaying content. In one version, the movable member is adjacent to the display and substantially shields a portion of the display as it traverses thereover. Coordinated content transmitted to the display gives the appearance that the movable member is influencing the displayed content. For example, as the member moves upward an image below the member stretches in size while an image above the member compresses in size until the upper image disappears and the lower image occupies the entire visible portion of the display. This continues as the member traverses up and down over the display. The member may appear to manipulate the images by stretching, compressing, pushing, pulling and/or erasing them.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: April 28, 2009
    Assignee: Wynn Resorts Holdings, LLC
    Inventors: Graham N. Beland, William J. Buttram, Michael H. Cox, James B. Gover, James J. Gietzen, John C. Lester, Donald D. Rolfe, Rodney D. Wardle, John S. Williams, Brian W. Young, Scott Fisher
  • Patent number: 7515324
    Abstract: A system for, and method of resolving reset conflicts in a phased-reset SLM system and a projection visual display system incorporating the system or the method. In one embodiment, the system includes a reset conflict arbiter configured to receive reset instructions containing conflicts from a sequence generator and resolve the conflicts by shifting an execution time of a selected one of the reset instructions according to a conflict resolution method.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: April 7, 2009
    Assignee: Texas Instruments Incorporated
    Inventor: Sue Hui
  • Publication number: 20090046256
    Abstract: One embodiment of the invention discloses projector circuit boards comprising an image receiving terminal, a central processing unit, a motor driving module, a DMD and a DMD control module. The image receiving terminal receives an image signal and transmits the received image signal to the central processing unit. The central processing unit processes the received image signal. The motor driving module drives a motor on the basis of the processed image signal to rotate a color wheel to generate a colored beam. The DMD, comprising a plurality of micro-mirrors, is used in reflecting the colored beam, transforming the colored beam into an image beam, and transmitting the image beam to a projection lens to project an image. The rotation angles of the micro-mirrors are controlled by the DMD control module coupled between the central processing unit and the DMD. The projector circuit board is perpendicular to a light path of the projection lens.
    Type: Application
    Filed: April 3, 2008
    Publication date: February 19, 2009
    Applicant: CORETRONIC CORPORATION
    Inventors: Chin-Tsao Chang, Lien-Fu Cheng, I-Hsien Liu
  • Patent number: 7492503
    Abstract: A display having a plurality of reflective display elements. In one embodiment, the display elements comprise at least one electrode having a plurality of active areas. In one embodiment, at least two of the sizes of the active areas are different with respect to each other, e.g., they are non-uniform in size. The interferometric modulators have a plurality of states, wherein selected ones of the interferometric modulators are configured to be actuated depending differing electrostatic forces in the interferometric modulators. The electrostatic forces in the interferometric modulators are different at least in part due to variations in the sizes of the active areas of the electrodes.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: February 17, 2009
    Assignee: IDC, LLC
    Inventor: Clarence Chui
  • Patent number: 7486263
    Abstract: An electronic device includes a first member, and a second member which includes segments. At least one of the first member and the second member is movable relative to the other of the first member and the second member among a plurality of distinct positions as a result of differing voltage states of the segments.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: February 3, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Daryl E. Anderson, Eric T. Martin, Andrew L. Van Brocklin
  • Patent number: 7483200
    Abstract: A micro mirror device is described. The device has a tiltable mirror plate with a reflective surface configured to reflect incident light to form a reflected light beam. A controller is configured to cause the mirror plate to tilt from an un-tilted position to an “off” position, a first “on” position, or a second “on” position. An opaque aperture structure is configured to block substantially all of a reflected light beam from reaching a display surface when the mirror plate is tilted to the “off” position, allow a first portion of a reflected light beam to pass through when the mirror plate is tilted to the first “on” position and allow a second portion of a reflected light beam to pass through when the mirror plate is tilted to the second “on” position. The tilting positions determine a brightness of display pixels.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: January 27, 2009
    Assignee: Spatial Photonics, Inc.
    Inventor: Shaoher X. Pan
  • Patent number: 7471273
    Abstract: Disclosed are reset techniques for a spatial light modulator, and related system for displaying an image. The systems and methods have pixels that are loaded with data and reset commands to take on binary states, where the methods employ adaptable algorithms to provide flexibility in placement of the reset commands. Specifically, valid regions for such reset commands are determined, and times for consecutive bit segments are calculated; and DMD load times are adjusted for a proper sequence. An advantage of the disclosed methods is that two consecutive bit segments are no longer restricted to following a pattern of normal/short bit segments. In contrast, with the disclosed technique short segments may be consecutive, allowing the implementation of additional enhancements, including neutral density filtering (NDF) techniques that typically include adjacent short bits in the bit sequence.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: December 30, 2008
    Assignee: Texas Instruments Incorporated
    Inventors: Gregory J. Hewlett, Harold E. Bellis, II
  • Patent number: 7471445
    Abstract: A spatial light modulator includes a mirror plate comprising a reflective upper surface, a lower surface, and a substrate portion comprising a cavity having an opening on the lower surface, a substrate comprising an upper surface, a hinge support post in connection with the substrate, and a hinge component supported by the hinge support post and in connection with the mirror plate, and one or more landing tips configured to contact the lower surface of the mirror plate to limit rotation of the mirror plate. The hinge component includes a protrusion that is anchored in a hole in the top surface of the hinge support post and the hinge component is configured to extend into the cavity to facilitate rotation of the mirror plate.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: December 30, 2008
    Assignee: Spatial Photonics, Inc.
    Inventor: Shaoher X. Pan
  • Patent number: 7463406
    Abstract: A microelectromechanical optical display devices is provided. An optical layer is disposed on a substrate. A plurality of posts are disposed on the optical layer. A reflective layer is disposed on the plurality of posts. A flexible layer is disposed on the reflective layer, wherein edge of the reflective layer is separated from edge of the flexible layer by a distance equal to or smaller than about 2 ?m.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: December 9, 2008
    Assignee: AU Optronics Corp.
    Inventors: Chia-Sheng Lee, Han-Tu Lin, Jia-Fam Wong
  • Patent number: 7460293
    Abstract: One embodiment of a display system includes a first array that defines multiple reflective devices each movable between an inactive position to reflect light to a light dump and an active position to reflect light to an imaging region, a second array that defines multiple reflective devices each movable between an inactive position to reflect light to the light dump and an active position to reflect light to the imaging region, and an activation device that projects an activation beam to the devices to move individual ones of the devices between the active position and the inactive position, wherein the first array, the second array and the activation device are housed within a single vacuum enclosure.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: December 2, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Timothy R Emery, George Radominski, Steve P. Hanson, Robert W. Shreeve, Alexander Govyadinov, Martha A. Truninger, Sriram Ramamoorthi, Harold Lee Van Nice
  • Patent number: 7453478
    Abstract: A light modulator includes a control unit configured to receive an image input signal, and an array having a plurality of pixels arranged in a plurality of rows. The control unit is configured to provide a first address associated with the image input signal to the array in response to detecting a first mode of operation, and the control unit is configured to provide a second address associated with the image input signal to the array in response to detecting a second mode of operation. The array is configured to drive a first one of the plurality of rows in response to receiving the first address, and the array is configured to drive the first one of the plurality of rows and a second one of the plurality of rows in response to receiving the second address.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: November 18, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Eric T. Martin, Eugene J. Mar
  • Patent number: 7453621
    Abstract: A spatial light modulator includes a substrate; a hinge in connection with the substrate; a mirror plate that is connected with the hinge and is configured to tilt about the hinge; and a piezoelectric device coupled with the substrate. The piezoelectric device is configured to produce an acoustic wave to assist the separation between the mirror plate and the object.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: November 18, 2008
    Assignee: Spatial Photonics, Inc.
    Inventor: Vlad Novotny
  • Patent number: 7453624
    Abstract: A display system includes a light source and a first optical system coupled to the light source and adapted to provide an illumination beam along an illumination path. The display system also includes a spatial light modulator positioned in the illumination path. The spatial light modulator includes a semiconductor substrate including a plurality of electrode devices and a hinge structure coupled to the semiconductor substrate. The hinge structure includes silicon material. The spatial light modulator also includes a mirror post coupled to the hinge structure and extending to a predetermined distance from the semiconductor substrate and a mirror plate coupled to the mirror post and overlying the plurality of electrode devices. The display system further includes a second optical system coupled to the spatial light modulator and adapted to project an image onto a projection surface.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: November 18, 2008
    Assignee: Miradia Inc.
    Inventors: Xiao Yang, Yuxiang Wang, Wook Ji, Justin Allen Payne, Ye Wang, William Spencer Worley, III, Dongmin Chen, Howard Woo
  • Patent number: 7446928
    Abstract: A micro-electro-mechanical systems element array device in which plural micro-electro-mechanical systems elements each having a movable portion are arranged in an array, said movable portion being to be displaced by a physical force which is generated by applying an electric signal to a conductive portion, and each of said micro-electro-mechanical systems elements drives and displaces said movable portion of said micro-electro-mechanical systems element on the basis of a displacement data for said micro-electro-mechanical systems element, wherein said device comprises: an electric signal generating unit as defined herein; a switching unit as defined herein; and a selecting unit as defined herein.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: November 4, 2008
    Assignee: FUJIFILM Corporation
    Inventors: Koichi Kimura, Shinya Ogikubo, Hirochika Nakamura
  • Patent number: 7446926
    Abstract: In various embodiments of the invention, a regenerating protective coating is formed on at least one surface of an interior cavity of a MEMS device. Particular embodiments provide a regenerating protective coating on one or more mirror surfaces of an interferometric light modulation device, also known as an iMoD in some embodiments. The protective coating can be regenerated through the addition of heat or energy to the protective coating.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: November 4, 2008
    Assignee: IDC, LLC
    Inventor: Jeffrey B. Sampsell
  • Patent number: 7439950
    Abstract: Systems and methods are provided for securing a pin within a raised display system. A washer surrounds the pin. A washer recess comprises a contact surface configured as to bring the washer into a tilted position relative to the pin, such that the washer is brought into physical communication with the pin. A reset mechanism moves at least a portion of the washer to force the washer into a position substantially level relative to the pin, such that the pin can move freely through the washer. An electromagnet holds the washer in the substantially level position when the electromagnet is activated.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: October 21, 2008
    Assignee: Northrop Grumman Corporation
    Inventor: Christian Carlberg