Plural Mechanically Movable Display Elements Patents (Class 345/108)
-
Patent number: 8049710Abstract: A multi-view autostereoscopic display apparatus with improved resolution, includes: a display panel alternately displaying a plurality of images of different view points; an image separating device for separating the plurality of images such that the separated images can be alternately observed in different viewing zones; and a directional backlight unit switched between a plurality of different angular distributions of illumination to selectively provide light to the display panel, wherein the directional backlight unit is switched between the plurality of different angular distributions of illumination in synchronization with an image display period of the display panel.Type: GrantFiled: September 10, 2007Date of Patent: November 1, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Sergey Shestak, Dae-sik Kim
-
Patent number: 8049713Abstract: Systems and methods for reducing the power consumption necessary for updating a display are provided. The methods include determining a row addressing order based on an attribute of the image data that minimizes the number of column charging transitions necessary to write the image data to the display. In some embodiments, the row-addressing order is determined based on a determination of a whiteness value for the row. In some embodiments, a power-optimized row-addressing order is embedded in image data, allowing a display device to write the image data to the display more efficiently.Type: GrantFiled: April 24, 2006Date of Patent: November 1, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: Jeffrey Brian Sampsell
-
Patent number: 8040338Abstract: 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: GrantFiled: August 12, 2010Date of Patent: October 18, 2011Assignee: Qualcomm MEMS Technologies, Inc.Inventors: Clarence Chui, Alan Lewis, Marc M. Mignard
-
Patent number: 8013849Abstract: 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: GrantFiled: February 17, 2010Date of Patent: September 6, 2011Assignee: Seiko Epson CorporationInventor: Isamu Namose
-
Patent number: 7999993Abstract: An interferometric light modulating device having two viewing surfaces is provided. In some embodiments, the device can generate two distinct images, one on each side of the device, simultaneously.Type: GrantFiled: November 8, 2007Date of Patent: August 16, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Clarence Chui, Mark W Miles
-
Patent number: 7999773Abstract: A display apparatus and a manufacturing method thereof which allow a component to be replaced and repaired simply, rapidly, and stably are provided. The display apparatus comprises a main body which accommodates a light source part, and comprises a display element which displays an image using light emitted from the light source part; an element panel which accommodates the display element; a front cover which is coupled to the main body and provided with a panel mounting part to which the element panel is detachably coupled; and an element driving board which is coupled to the front cover, is opposite to the main body, interposes the front cover between the element driving board and the main body, and is electrically connected with the display element.Type: GrantFiled: January 23, 2007Date of Patent: August 16, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Jong-hak Moon, Kyoung-choul Jang, Byung-jo Kang
-
Patent number: 7999787Abstract: A dielectrophoretic display has a substrate having walls defining a cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface. A fluid is contained within the cavity; and a plurality of particles are present in the fluid. There is applied to the substrate an electric field effective to cause dielectrophoretic movement of the particles so that the particles occupy only a minor proportion of the viewing surface.Type: GrantFiled: August 31, 2005Date of Patent: August 16, 2011Assignee: E Ink CorporationInventors: Karl R. Amundson, Alexi C. Arango, Joseph M. Jacobson, Thomas H. Whitesides, Michael D. McCreary, Richard J. Paolini, Jr.
-
Patent number: 7999995Abstract: A full color range analog controlled interferometric modulation device is provided. The device includes a transparent substrate, and a transparent fixed-position electrically conductive electrode with a bottom surface overlying the substrate. A transparent spacer overlies the fixed-position electrode, and an induced absorber overlies the spacer. An optically reflective electrically conductive moveable membrane overlies the induced absorber. A cavity is formed between the induced absorber and the moveable membrane having a maximum air gap dimension less than the spacer thickness. In one aspect, the distance from the top surface of the fixed-position electrode to a cavity lower surface is at least twice as great as the cavity maximum air gap dimension. In another aspect, at least one anti-reflective coating (ARC) layer is interposed between the substrate and the fixed-position electrode, and at least one ARC layer is interposed between the fixed-position electrode and the spacer.Type: GrantFiled: September 28, 2009Date of Patent: August 16, 2011Assignee: Sharp Laboratories of America, Inc.Inventors: Akinori Hashimura, Douglas J. Tweet, Apostolos T. Voutsas
-
Publication number: 20110193770Abstract: 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: ApplicationFiled: January 28, 2011Publication date: August 11, 2011Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.Inventors: Brian J. Gally, William J. Cummings
-
Patent number: 7990604Abstract: 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: GrantFiled: June 15, 2009Date of Patent: August 2, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Chong U. Lee, John H. Hong, Marc M. Mignard, Alok Govil
-
Patent number: 7982940Abstract: The present invention provides particles for display media constituting the display media used for an information display panel, in which the display media are sealed between two substrates, at least one of two substrates being transparent, and, in which the display media, to which an electrostatic field is applied, are made to move so as to display information, comprising: the particles having a substantially spherical shape, which are made by polymerizing raw materials including monomers, which include (acrylic or methacrylic) resin-hydrocarbon resin copolymer in the particles, in which a part of or all of the monomers are a multifunctional monomer having a plurality of polymerization reactive groups in one molecule, and which have minute irregularities on their surface evenly. By such a construction, the particles for display media can obtain irregularities firmly fixed on their surface. Poor display can be solved by using the same.Type: GrantFiled: December 14, 2005Date of Patent: July 19, 2011Assignee: Bridgestone CorporationInventors: Kazuya Murata, Takao Ohuchi, Hajime Kitano
-
Patent number: 7982700Abstract: Embodiments of an interferometric modulator are disclosed having various enhancements and features including a conductive bus. In certain embodiments, the interferometric modulator has a first conductive layer suspended over a second electrode layer. In certain embodiments, a second conductive layer is provided over the first conductive layer. One of the first and/or second conductive buses may further connect to the first electrode layer and/or the second electrode layer. Other disclosed features can be incorporated into embodiments of the interferometric modulator to improve response time, power consumption, and image resolution.Type: GrantFiled: October 19, 2007Date of Patent: July 19, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Clarence Chui, Jeffrey B. Sampsell
-
Publication number: 20110169724Abstract: Interferometric modulators and methods of making the same are disclosed. In one embodiment, an interferometric display includes a sub-pixel having a membrane layer with a void formed therein. The void can be configured to increase the flexibility of the membrane layer. The sub-pixel can further include an optical mask configured to hide the void from a viewer. In another embodiment, an interferometric display can include at least two movable reflectors wherein each movable reflector has a different stiffness but each movable reflector has substantially the same effective coefficient of thermal expansion.Type: ApplicationFiled: January 8, 2010Publication date: July 14, 2011Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Yi Tao, Fan Zhong, Yeh-Jiun Tung
-
Patent number: 7976172Abstract: Light emitted from a lamp enters a color wheel having a region for allowing a predetermined color to pass therethrough, is reflected on a mirror, and enters a DMD. After this, the light is reflected by the DMD and enters a color sensor, which then detects the color of the transmitting light. A projection apparatus automatically synchronizes the control on the rotation of the color wheel and the control on the proceeding direction of the transmitting light by the DMD, based on a color time-division pattern of the transmitting light detected by the color sensor.Type: GrantFiled: March 15, 2007Date of Patent: July 12, 2011Assignee: Casio Computer Co., Ltd.Inventor: Tetsuro Narikawa
-
Publication number: 20110148751Abstract: A method and device for manipulating color in a display is disclosed. In one embodiment, a display comprises interferometric display elements formed to have spectral responses that produce white light. In one embodiment, the produced white light is characterized by a standardized white point.Type: ApplicationFiled: February 28, 2011Publication date: June 23, 2011Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.Inventors: Brian J. Gally, William J. Cummings
-
Patent number: 7956878Abstract: In display systems employing spatial light modulators, the OFF-state light from OFF-state pixels of the spatial light modulator can be captured and directed back to the pixels of the spatial light modulator so as to recycle the OFF-state light in the display system. Bitplanes derived from the desired image to be produced are calibrated to include the recycled off-state light to properly produce the desired image using the display system.Type: GrantFiled: April 3, 2008Date of Patent: June 7, 2011Assignee: Texas Instruments IncorporatedInventors: Andrew Ian Russell, David Foster Lieb
-
Patent number: 7948457Abstract: Methods of writing display data to MEMS display elements are configured to minimize charge buildup and differential aging. Prior to writing rows of image data, a pre-write operation is performed. The pre-write operation with either actuate or release substantially all pixels in a row prior to writing the image data. In some embodiments, the selection between actuating or releasing is performed in a random or pseudo-random manner.Type: GrantFiled: April 14, 2006Date of Patent: May 24, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Manish Kothari, William J. Cummings
-
Patent number: 7944599Abstract: 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: GrantFiled: July 2, 2007Date of Patent: May 17, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Clarence Chui, William Cummings, Brian Gally, Lior Kogut, Ming-Hau Tung, Yeh-Jiun Tung, Chih-Wei Chiang, Denis Endisch
-
Publication number: 20110105185Abstract: At least some subpixels in an interferometric modulator display are formed in a triangular shape. Such triangular subpixels may be formed and/or addressed in a variety of manners. At least some individual triangular subpixels may be separately addressable. However, a plurality of triangular subpixels may be addressable as a group, e.g., as a group of 2, 3, 4 or more. A single pixel may include varying numbers of triangular subpixels. For example, a single pixel may include 3, 6, 9, 12, 15, 18, 21 or some other number of triangular subpixels. Alternatively, a single pixel may include 4, 8, 12, 16, 20, or some other number of triangular subpixels. A single pixel may include triangular subpixels that are configured to be separately addressable and/or triangular subpixels are configured to be addressable as a group.Type: ApplicationFiled: October 29, 2009Publication date: May 5, 2011Inventor: David Leslie Heald
-
Publication number: 20110096056Abstract: Embodiments of exemplary MEMS interferometric modulators are arranged at intersections of rows and columns of electrodes. In certain embodiments, the column electrode has a lower electrical resistance than the row electrode. A driving circuit applies a potential difference of a first polarity across electrodes during a first phase and then quickly transition to applying a bias voltage having a polarity opposite to the first polarity during a second phase. In certain embodiments, an absolute value of the difference between the voltages applied to the row electrode is less than an absolute value of the difference between the voltages applied to the column electrode during the first and second phases.Type: ApplicationFiled: January 5, 2011Publication date: April 28, 2011Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Clarence Chui, Manish Kothari, Marc Mignard, Mithran C. Mathew, Jeffrey B. Sampsell
-
Publication number: 20110095973Abstract: An iterferometric modulator array is integrated with collapsible cavity MEMS electrical switches. The electrical switches may have similar physical geometry as the display elements. The switches may form row or column select functions for the display.Type: ApplicationFiled: December 6, 2010Publication date: April 28, 2011Applicant: QUALCOMM MEMS Technologies, Inc.Inventor: Clarence Chui
-
Patent number: 7928999Abstract: In display systems employing spatial light modulators, the OFF-state light from OFF-state pixels of the spatial light modulator can be captured and directed back to the pixels of the spatial light modulator so as to recycle the OFF-state light in the display system. Bitplanes derived from the desired image to be produced are calibrated to include the recycled off-state light to properly produce the desired image using the display system.Type: GrantFiled: July 25, 2007Date of Patent: April 19, 2011Assignee: Texas Instruments IncorporatedInventors: Andrew Ian Russell, David Foster Lieb, Rajeev Ramanath
-
Patent number: 7907319Abstract: An interferometric modulator (Imod) cavity has a reflector and an induced absorber. A direct view reflective flat panel display may include an array of the modulators. Adjacent spacers of different thicknesses are fabricated on a substrate by a lift-off technique used to pattern the spacers which are deposited separately, each deposition providing a different thickness of spacer. Or a patterned photoresist may be used to allow for an etching process to selectively etch back the thickness of a spacer which was deposited in a single deposition. A full-color static graphical image may be formed of combined patterns of interferometric modulator cavities. Each cavity includes a reflector, and an induced absorber, the induced absorber including a spacer having a thickness that defines a color associated with the cavity.Type: GrantFiled: May 12, 2006Date of Patent: March 15, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: Mark W. Miles
-
Patent number: 7898521Abstract: 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: GrantFiled: August 26, 2005Date of Patent: March 1, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Brian J. Gally, William J. Cummings
-
Patent number: 7893919Abstract: A bit depth of a pixel comprising multiple display elements, such as interferometric modulators, may be increased through the use of display elements having different intensities, while the lead count is minimally increased. An exemplary pixel with at least one display element having an intensity of 0.5 and N display elements each having an intensity of one can provide about 2N+1 shades (e.g., 0, 0.5, 1.0, 1.5, 2.0, [N+0.5]). In comparison, a pixel having N display elements, each having an intensity of one, can only provide about N+1 shades (e.g., 0, 1, 2, . . . , N). Thus, using at least one display element having an intensity lower than the intensity of each of the other display elements increases the number of shades provided by the pixel by an approximate factor of two and increases the bit depth of the pixel, while minimizing the number of additional leads.Type: GrantFiled: January 21, 2005Date of Patent: February 22, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Manish Kothari, Jeffrey B. Sampsell
-
Patent number: 7884988Abstract: A micromechanical device and system utilizing a supplemental reset pulse to ensure deflectable members deflect to the desired position. After loading data into a micromechanical device, a reset pulse is used to position the deflectable member to a position indicated by the data. A supplemental reset pulse is then applied to ensure the deflectable member is driven to the position indicated by the data. The method and system are also used to ensure the deflectable members are driven to a neutral position.Type: GrantFiled: July 8, 2004Date of Patent: February 8, 2011Assignee: Texas Instruments IncorporatedInventors: Gregory J. Hewlett, Darren T. McCosky
-
Patent number: 7884989Abstract: An iterferometric modulator array is configured to reflect a broad band spectrum of optical wavelengths by arranging a reflector and a partially transparent substrate in a non-parallel relationship.Type: GrantFiled: January 25, 2007Date of Patent: February 8, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Brian J. Gally, William J. Cummings, Ming-Hau Tung, Lior Kogut, Marc Mignard
-
Publication number: 20110025657Abstract: Operating methods of an array of electromechanical pixels resulting in efficient and reliable operation of light modulating elements. The invention simplifies the design of electromechanical light modulators and permits the construction of large size displays with greater mechanical tolerances on glass substrates.Type: ApplicationFiled: July 31, 2009Publication date: February 3, 2011Inventors: Edward Pakhchyan, Haik Mesropian, Syuzi Pakhchyan
-
Patent number: 7880736Abstract: This invention provides a display control system that includes: a) a micromirror array comprising a plurality of mirrors; b) a first control function for controlling the mirrors in a first state; c) a second control function for controlling the mirrors in a second state; d) and a switchover controller for switching from the first state to second state, or from the second state to first state, wherein the switchover controller switches the state of at least two mirrors simultaneously at a same predetermined point within a frame period.Type: GrantFiled: July 12, 2007Date of Patent: February 1, 2011Assignees: Silicon Quest Kabushiki-Kaisha, Olympus CorporationInventors: Fusao Ishii, Taro Endo, Yoshihiro Maeda, Kazuma Arai, Hirokazu Nishino
-
Patent number: 7872792Abstract: Improvements in an interferometric modulator that has a cavity defined by two walls.Type: GrantFiled: January 26, 2007Date of Patent: January 18, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: Mark W. Miles
-
Patent number: 7855825Abstract: A micro-mechanical structure system according to the present invention includes: a movable structure 5, at least a portion of the movable structure 5 being formed of a single-crystalline material; an elastic supporting member 10 for supporting the movable structure 5; a stationary electrode section 13, 25 at least partially opposing the movable structure 5; and a base 22 which has a circuit section and to which the stationary electrode 13, 25 is affixed. The stationary electrode section 13, 25 includes a first electrode layer (upper stationary electrode layer) 13 positioned relative to the movable structure 5 and a second electrode layer (lower stationary electrode layer) 25 positioned relative to the base 22, the first electrode layer 13 and the second electrode layer 25 being bonded to each other via adhesion layers 15 and 16.Type: GrantFiled: April 14, 2006Date of Patent: December 21, 2010Assignee: Panasonic CorporationInventors: Osamu Kajino, Hironori Tomita, Yoshihiro Mushika
-
Publication number: 20100315398Abstract: Methods and devices for applying bias potentials of opposite polarities to columns of electromechanical display elements are described herein. The bias potentials may be applied such that a column and an adjacent column receive bias potentials of opposite polarity. The bias potentials may be applied such that a polarity of bias voltages received by columns of a first set of the display elements is opposite a polarity of bias voltages received by columns of a second set of the display elements.Type: ApplicationFiled: August 5, 2010Publication date: December 16, 2010Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Clarence Chui, Manish Kothari
-
Patent number: 7852546Abstract: The invention relates to methods and apparatus for forming a display apparatus. According to one aspect of the invention, the display apparatus includes a first substrate having an aperture layer formed thereon, a light guide for guiding light towards the aperture layer, a plurality of MEMS light modulators for modulating light passing through the aperture layer from the light guide, and a spacer substantially surrounding the light guide for keeping the light guide and the first substrate a predetermined distance apart from one another, thereby forming a gap between the first substrate and the light guide. Alternatively or in addition, the first substrate may have a control matrix formed thereon.Type: GrantFiled: October 19, 2007Date of Patent: December 14, 2010Assignee: Pixtronix, Inc.Inventors: John J. Fijol, Jignesh Gandhi, Mark J. Shufelt
-
Patent number: 7843410Abstract: One embodiment includes a display of interferometric modulators having a configurable resolution characteristic. Selected rows and/or columns are interconnected via a switch. The switch can include a fuse, antifuse, transistor, and the like. Depending on a desired resolution for a display, the switches can be placed in an “open” or “closed” state. Advantageously, using the switches, a display can readily be configured for differing modes of resolution. Furthermore, using the switches, a display can be configured to electrically connect certain rows or columns in the display such that the connected rows or columns can be driven simultaneously by a common voltage source.Type: GrantFiled: May 20, 2005Date of Patent: November 30, 2010Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: Philip D. Floyd
-
Patent number: 7812809Abstract: 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: GrantFiled: February 13, 2007Date of Patent: October 12, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-young Choi, Jee-hwan Jang, Byung-do Oh
-
Patent number: 7791586Abstract: 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: GrantFiled: November 6, 2006Date of Patent: September 7, 2010Assignee: Audiovox CorporationInventor: David M. Shalam
-
Patent number: 7787173Abstract: 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: GrantFiled: December 23, 2008Date of Patent: August 31, 2010Assignee: Qualcomm Mems Technologies, Inc.Inventor: Clarence Chui
-
Patent number: 7782293Abstract: 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: GrantFiled: August 26, 2005Date of Patent: August 24, 2010Assignee: Qualcomm MEMS Technologies, Inc.Inventors: Brian J. Gally, William J. Cummings
-
Patent number: 7777715Abstract: 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: GrantFiled: June 29, 2006Date of Patent: August 17, 2010Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Clarence Chui, Alan Lewis, Marc M. Mignard
-
Patent number: 7768690Abstract: 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: GrantFiled: June 25, 2008Date of Patent: August 3, 2010Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: Jeffrey B. Sampsell
-
Publication number: 20100141618Abstract: 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: ApplicationFiled: February 17, 2010Publication date: June 10, 2010Applicant: SEIKO EPSON CORPORATIONInventor: Isamu NAMOSE
-
Patent number: 7719747Abstract: 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: GrantFiled: February 25, 2008Date of Patent: May 18, 2010Assignee: Qualcomm Mems Technologies, Inc.Inventors: Ming-Hau Tung, Srinivasan Sethuraman
-
Patent number: 7719500Abstract: 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: GrantFiled: May 20, 2005Date of Patent: May 18, 2010Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: Clarence Chui
-
Patent number: 7714801Abstract: 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: GrantFiled: January 5, 2005Date of Patent: May 11, 2010Assignee: Nokia CorporationInventor: Jyrki Kimmel
-
Patent number: 7710350Abstract: 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: GrantFiled: February 6, 2007Date of Patent: May 4, 2010Assignee: Texas Instruments IncorporatedInventor: Stephen W. Marshall
-
Patent number: 7702192Abstract: 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: GrantFiled: June 21, 2006Date of Patent: April 20, 2010Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: Jeffrey B. Sampsell
-
Patent number: 7701412Abstract: 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: GrantFiled: November 30, 2004Date of Patent: April 20, 2010Assignee: Samsung Electronics Co., LtdInventors: Ju-Hyun Lee, Youngchul Ko, Plisoo Ahn, Jinwoo Cho, Serafirnovich Pavel
-
Publication number: 20100039370Abstract: 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: ApplicationFiled: February 9, 2009Publication date: February 18, 2010Applicant: IDC, LLCInventor: Mark W. Miles
-
Patent number: 7663794Abstract: 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: GrantFiled: January 15, 2008Date of Patent: February 16, 2010Assignee: Qualcomm MEMS Technologies, Inc.Inventor: William J Cummings
-
Publication number: 20100026680Abstract: 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: ApplicationFiled: October 13, 2009Publication date: February 4, 2010Applicant: IDC, LLCInventors: Clarence Chui, Manish Kothari