Patents Assigned to IDC, LLC
  • Publication number: 20100172012
    Abstract: A system and method of reducing color shift in a display includes an interferometric modulator display configured to reflect light from at least one light source and through at least one converging optical element in an optical path from the light source to a viewer via the display. In one embodiment, the converging optical element comprises a diffractive optical element.
    Type: Application
    Filed: March 15, 2010
    Publication date: July 8, 2010
    Applicant: IDC, LLC
    Inventor: Jeffrey B. Sampsell
  • Patent number: 7684104
    Abstract: Described is an apparatus, method for manufacturing, and systems comprising a MEMS device, for example, an interferometric modulator, comprising a substrate, a movable mirror, a deformable layer, and a support structure. In some embodiments, the support structure comprises a plurality of support posts. A connector secures the movable mirror secured to the deformable layer. At least one of the connector and the support post is a composite comprising a first component and a second component, where at the first component forms at least a portion of at least one of the perimeter of the connector and support post.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: March 23, 2010
    Assignee: IDC, LLC
    Inventors: Clarence Chui, Jeffrey B. Sampsell
  • 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
  • Publication number: 20100024523
    Abstract: One embodiment provides a method of testing humidity, comprising: i) determining a property of a device which encloses a plurality of interferometric modulators and ii) determining a relative humidity value or a degree of the relative humidity inside the device based at least in part upon the determined property, wherein the determined property comprises at least one of i) the thickness and width of a seal of the device and ii) adhesive permeability of a component of the device. In one embodiment, the determined property further comprises at least one of the following: i) temperature-humidity combination inside the device, ii) a desiccant capacity inside the device and iii) a device size.
    Type: Application
    Filed: October 9, 2009
    Publication date: February 4, 2010
    Applicant: IDC, LLC
    Inventors: Brian J. Gally, Lauren Palmateer, Manish Kothari, 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
  • Publication number: 20090323168
    Abstract: In one embodiment, the invention provides a method for fabricating a microelectromechanical systems device. The method comprises fabricating a first layer comprising a film having a characteristic electromechanical response, and a characteristic optical response, wherein the characteristic optical response is desirable and the characteristic electromechanical response is undesirable; and modifying the characteristic electromechanical response of the first layer by at least reducing charge build up thereon during activation of the micro electromechanical systems device.
    Type: Application
    Filed: June 22, 2009
    Publication date: December 31, 2009
    Applicant: IDC, LLC
    Inventors: Mark W. Miles, John Batey, Clarence Chui, Manish Kothari
  • Patent number: 7630114
    Abstract: Described herein is the use of a diffusion barrier layer between metallic layers in MEMS devices. The diffusion barrier layer prevents mixing of the two metals, which can alter desired physical characteristics and complicate processing. In one example, the diffusion barrier layer may be used as part of a movable reflective structure in interferometric modulators.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: December 8, 2009
    Assignee: IDC, LLC
    Inventors: Hsin-Fu Wang, Ming-Hau Tung, Stephen Zee
  • Publication number: 20090296194
    Abstract: In various embodiments of the invention, an interferometric display device is provided having an external film with a plurality of structures that redirect light from an inactive area of the display to an active area of the display. Light incident on the external film that would normally continue towards an inactive area of the display is either reflected, refracted, or scattered towards an active area of the display comprising moveable and static reflective surfaces that form an optical cavity.
    Type: Application
    Filed: June 3, 2009
    Publication date: December 3, 2009
    Applicant: IDC, LLC
    Inventors: Brian J. Gally, William J. Cummings
  • 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: 7626751
    Abstract: By selectively placing color filters with different transmittance spectrums on an array of modulator elements each having the same reflectance spectrum, a resultant reflectance spectrum for each modulator element and it's respective color filter is created. In one embodiment, the modulator elements in an array are manufactured by the same process so that each modulator element has a reflectance spectrum that includes multiple reflectivity lines. Color filters corresponding to multiple colors, such as red, green, and blue, for example, may be selectively associated with these modulator elements in order to filter out a desired wavelength range for each modulator element and provide a multiple color array. Because the modulator elements are manufactured by the same process, each of the modulator elements is substantially the same and common voltage levels may be used to activate and deactivate selected modulation.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: December 1, 2009
    Assignee: IDC, LLC
    Inventor: William J. Cummings
  • Patent number: 7623752
    Abstract: One embodiment provides a method of testing humidity, comprising: i) determining a property of a device which encloses a plurality of interferometric modulators and ii) determining a relative humidity value or a degree of the relative humidity inside the device based at least in part upon the determined property, wherein the determined property comprises at least one of i) the thickness and width of a seal of the device and ii) adhesive permeability of a component of the device. In one embodiment, the determined property further comprises at least one of the following: i) temperature-humidity combination inside the device, ii) a desiccant capacity inside the device and iii) a device size.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: November 24, 2009
    Assignee: IDC, LLC
    Inventors: Brian J. Gally, Lauren Palmateer, Manish Kothari, William J. Cummings
  • Patent number: 7619810
    Abstract: An interference modulator (Imod) incorporates anti-reflection coatings and/or micro-fabricated supplemental lighting sources. An efficient drive scheme is provided for matrix addressed arrays of IMods or other micromechanical devices. An improved color scheme provides greater flexibility. Electronic hardware can be field reconfigured to accommodate different display formats and/or application functions. An IMod's electromechanical behavior can be decoupled from its optical behavior. An improved actuation means is provided, some one of which may be hidden from view. An IMod or IMod array is fabricated and used in conjunction with a MEMS switch or switch array. An IMod can be used for optical switching and modulation. Some IMods incorporate 2-D and 3-D photonic structures. A variety of applications for the modulation of light are discussed. A MEMS manufacturing and packaging approach is provided based on a continuous web fed process.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: November 17, 2009
    Assignee: IDC, LLC
    Inventor: Mark W. Miles
  • Patent number: 7618831
    Abstract: Process control monitors are disclosed that are produced using at least some of the same process steps used to manufacture a MEMS device. Analysis of the process control monitors can provide information regarding properties of the MEMS device and components or sub-components in the device. This information can be used to identify errors in processing or to optimize the MEMS device. In some embodiments, analysis of the process control monitors may utilize optical measurements.
    Type: Grant
    Filed: November 17, 2005
    Date of Patent: November 17, 2009
    Assignee: IDC, LLC
    Inventors: William Cummings, Brian Gally
  • Publication number: 20090279162
    Abstract: An optical device includes a non-transparent substrate. The optical device further includes a first optical layer which is at least partially transmissive and at least partially reflective to incident light. The optical device further includes a second optical layer which is at least partially reflective to incident light. The second optical layer is spaced from the first optical layer. At least one of the first optical layer and the second optical layer is movable between a first position at a first distance from the first optical layer and a second position at a second distance from the first optical layer. Movement of the at least one of the first optical layer and the second optical layer between the first and second positions modulates the reflectivity of the device.
    Type: Application
    Filed: July 20, 2009
    Publication date: November 12, 2009
    Applicant: IDC, LLC
    Inventor: Clarence Chui
  • Patent number: 7616369
    Abstract: This invention provides a precursor film stack for use in the production of MEMS devices. The precursor film stack comprises a carrier substrate, a first layer formed on the carrier substrate, a second layer of an insulator material formed on the first layer, and a third layer of a sacrificial material formed on the second layer.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: November 10, 2009
    Assignee: IDC, LLC
    Inventors: Mark W Miles, Brian J. Gally, Clarence Chui
  • Publication number: 20090273596
    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: Application
    Filed: July 10, 2009
    Publication date: November 5, 2009
    Applicant: IDC, LLC
    Inventor: William J. Cummings
  • Patent number: 7612932
    Abstract: A microelectromechanical (MEMS) device includes a first reflective layer, a movable element, and an actuation electrode. The movable element is over the first reflective layer. The movable element includes a deformable layer and a reflective element. The actuation electrode is between the deformable layer and the reflective element.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: November 3, 2009
    Assignee: IDC, LLC
    Inventors: Clarence Chui, Denis Endisch, Lior Kogut, Ming-Hau Tung, Yeh-Jiun Tung, Chih-Wei Chiang
  • Publication number: 20090267934
    Abstract: The width and location of a hysteresis window of an interferometric modulator may be altered by adjusting various physical characteristics of the interferometric modulator. Thus, depending on the particular application for which the interferometric modulators are manufactured, the width and location of the hysteresis window may be altered. For example, in some applications, reducing the power required to operate an array of interferometric modulators may be an important consideration. In other applications, the speed of the interferometric modulators may be of more importance, where the speed of an interferometric modulator, as used herein, refers to the speed of actuating and relaxing the moveable mirror. In other applications, the cost and ease of manufacturing may be of most importance. Systems and methods are introduced that allow selection of a width and location of a hysteresis window by adjusting various physical characteristics.
    Type: Application
    Filed: July 7, 2009
    Publication date: October 29, 2009
    Applicant: IDC, LLC
    Inventors: Clarence Chui, Manish Kothari
  • Publication number: 20090267953
    Abstract: The invention comprises systems and methods for partitioning displays, and in particular, displays of interferometric modulator displays. In one embodiment, a display system includes one driving circuit configured to provide signals based on video data intended for display, and a bi-stable display comprising an array having a plurality of bi-stable display elements. The array is configured to display video data using signals received from the driving circuit, and the driving circuit is configured to partition the array into two or more fields, each field including at least one bi-stable display element, and refresh each of the two or more fields in accordance with a refresh rate associated with each field.
    Type: Application
    Filed: July 7, 2009
    Publication date: October 29, 2009
    Applicant: IDC, LLC
    Inventors: Jeffrey B. Sampsell, Karen Tyger, Mithran Mathew
  • Publication number: 20090267869
    Abstract: An ornamental display device having an interferometric modulator for displaying an ornamental image. The ornamental device may also have a signal receiver configured to receive an external signal. The ornamental device may further have a processor configured to control an image on the display based on the external signal. The external signal is emitted from a controller configured to control a plurality of ornamental devices to display coordinated images. The ornamental device may have a patterned diffuser formed on a transparent substrate to provide an ornamental image or information. The ornamental device may be a piece of jewelry or an article that may be worn. The image displayed may have an iridescent appearance. A controller may also be used to control images displayed on multiple ornamental device to provide coordinated images based on externals received or pre-programmed images.
    Type: Application
    Filed: July 6, 2009
    Publication date: October 29, 2009
    Applicant: IDC, LLC
    Inventors: Brian J Gally, William J. Cummings