Patents Assigned to QUALCOMM MEMS Technologies
-
Publication number: 20130127794Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for writing data to a display having an array of display elements. Delays which are utilized in reducing error during writing data to the array of display elements may be overlapped in time with each other to improve the frame rate of the display.Type: ApplicationFiled: November 18, 2011Publication date: May 23, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventor: Mark M. Todorovich
-
Publication number: 20130127784Abstract: This disclosure provides systems, methods, and apparatuses for hiding optical contrast features. To reduce visibility of an elongated optical contrast feature, such as a wire on a transparent light guide, neighboring light-turning features in the light guide are “moved” relative to their location in a layout where they are physically uniformly distributed. This movement renders the local optical density in the region around the wire more equal to the optical density in other regions of the light guide. The movement of neighboring light-turning features occurs principally within a distance from the wire that is within the width of the line spread function of the human eye at a normal viewing distance. The uniformity of the local optical density is therefore increased, and the human eye does not perceive the wires as being separate structures. Thus, the wires can be “hidden” within a field of light-turning features.Type: ApplicationFiled: November 22, 2011Publication date: May 23, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventor: Russel Allyn Martin
-
Publication number: 20130125969Abstract: This disclosure provides photovoltaic apparatus and methods of forming the same. In one implementation, a method of forming a photovoltaic device includes forming a plurality of substrate features on a surface of a glass substrate, the substrate features having a depth dimension in the range of about 10 ?m to about 1000 ?m and a width dimension in the range of about 10 ?m to about 1000 ?m. The method further includes forming a thin film solar cell over the surface of the glass substrate including over the plurality of substrate features.Type: ApplicationFiled: November 18, 2011Publication date: May 23, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Wilhelmus A. de Groot, Sijin Han, Fan Yang
-
Patent number: 8445390Abstract: A laser absorption layer is first selectively formed in a seal pattern region surrounding an array of electromechanical systems elements, followed by depositing an antistiction layer as a blanket layer over the substrate and the laser absorption layer. The antistiction layer is then selectively removed from the seal pattern using a laser. An epoxy sealing material is provided in the seal pattern where the antistiction layer was removed and a backplate is sealed to the substrate using epoxy.Type: GrantFiled: November 10, 2011Date of Patent: May 21, 2013Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: Teruo Sasagawa
-
Publication number: 20130120465Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for driving a pixel of a display. In one aspect, a segment driver and a common driver may be used to substantially concurrently address all display elements in the pixel. This addressing may reduce write time of the pixel, and may reduce the power consumed during the write process.Type: ApplicationFiled: November 18, 2011Publication date: May 16, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Alok Govil, Suryaprakash Ganti
-
Publication number: 20130120414Abstract: A laser absorption layer is first selectively formed in a seal pattern region surrounding an array of electromechanical systems elements, followed by depositing an antistiction layer as a blanket layer over the substrate and the laser absorption layer. The antistiction layer is then selectively removed from the seal pattern using a laser. An epoxy sealing material is provided in the seal pattern where the antistiction layer was removed and a backplate is sealed to the substrate using epoxy.Type: ApplicationFiled: November 10, 2011Publication date: May 16, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventor: Teruo Sasagawa
-
Publication number: 20130124116Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for estimating the lifetime or remaining lifetime of an electromechanical systems (EMS) device. In one aspect, a parameter of the device, such as a release or actuation voltage, is measured. The parameter measurement is used in conjunction with a model of the aging of the device according to the measured parameter to determine an estimated remaining lifetime of the device.Type: ApplicationFiled: November 15, 2011Publication date: May 16, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Yan Du, Kostadin D. Djordjev, Denis H. Endisch, Wilhelmus A. de Groot, Daniel Felnhofer
-
Publication number: 20130120226Abstract: This disclosure provides systems and apparatuses having pixels with various display element arrangements. In one aspect, a passive matrix display apparatus includes a plurality of red display elements extending along a direction parallel to a first row, the plurality of red display elements addressed by a single first common line, a plurality of green display elements extending along a direction parallel to a second row, the plurality of green display elements addressed by a single second common line, and a plurality of blue display elements extending along a direction parallel to a third row, the plurality of blue display elements addressed by a single third common line, where the number of green display elements in the display is greater than one of a number of red display elements in the display and a number of blue display elements in the display.Type: ApplicationFiled: June 11, 2012Publication date: May 16, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Kostadin D. Djordjev, Richard Yeh, Alan G. Lewis
-
Publication number: 20130120470Abstract: This disclosure provides systems and apparatuses having pixels connected to various drive lines. In one implementation, a passive matrix display apparatus comprises a plurality of display elements, arranged in rows and columns, each common line driving display elements of a single color, wherein at least one common line of the plurality of common lines is coupled to display elements in two or more rows to drive the two or more rows, and a plurality of sets of multiple segment lines, each set of multiple segment lines associated with a column of display elements, wherein one segment line of the set of multiple segment lines addresses display elements of a given color of one row along the column and an other segment line in the set of multiple segment lines addresses display elements of the given color of another row along the column.Type: ApplicationFiled: June 11, 2012Publication date: May 16, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Kostadin D. Djordjev, Richard Yeh, Alan G. Lewis
-
Publication number: 20130120476Abstract: An apparatus for displaying data includes a first array of display elements having a plurality of rows and columns, a second array display of display elements having a plurality of rows and columns, and a third array of display elements having a plurality of rows and columns. In some implementations, the third array is disposed between the first and second arrays. The apparatus further includes a first set of busses connected to supply display signals to columns of the first array, a second set of busses connected to supply display signals to columns of the second array, and a third set of busses connected to supply display signals to columns of the third array.Type: ApplicationFiled: November 8, 2012Publication date: May 16, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventor: QUALCOMM MEMS Technologies, Inc.
-
Publication number: 20130120416Abstract: This disclosure provides systems, methods and apparatus for storage capacitors. In one aspect, an electromechanical systems (EMS) device includes a substrate, an optical stack disposed over the substrate, a mechanical layer positioned over the optical stack, and a storage capacitor. The optical stack includes a stationary electrode and at least one dielectric layer disposed over the stationary electrode, and the storage capacitor includes a first plate, a second plate and a dielectric structure disposed between the first and second plates. The first plate includes a portion of the mechanical layer positioned over an optically non-active region of the device, and the dielectric structure of the storage capacitor includes a portion of the at least one dielectric layer of the optical stack.Type: ApplicationFiled: November 21, 2011Publication date: May 16, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Jae Hyeong Seo, Ming-Hau Tung, Marc M. Mignard
-
Publication number: 20130118548Abstract: This disclosure provides photovoltaic modules and methods of making the same. In one implementation, a photovoltaic module includes a plurality of photovoltaic devices configured to absorb light and generate electrical power and a plurality of conductors disposed over the photovoltaic devices. The photovoltaic module further includes a glass layer disposed over the photovoltaic devices, and the glass layer includes a textured surface opposite the plurality of photovoltaic devices. The textured surface includes features configured to diffract light incident the photovoltaic module. The photovoltaic module further includes a diffusive layer disposed over at least a portion of the plurality of conductors.Type: ApplicationFiled: November 11, 2011Publication date: May 16, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Sandeep K. Giri, Sijin Han
-
Patent number: 8439546Abstract: Embodiments of a panel lighting apparatus and methods of its manufacture are described. In one embodiment, the apparatus can include a light source, an at least partially transparent panel comprising a planar front surface and a planar back surface, the panel disposed in conjunction with the light source such that light from the light source is input into at least one edge of the panel and guided therein, and a plurality of light extraction dots disposed on the planar back surface, the plurality of light extraction dots configured to reflect light incident on the planar back surface and extract light from the light source propagating in the panel through the planar front surface.Type: GrantFiled: May 23, 2012Date of Patent: May 14, 2013Assignee: Qualcomm MEMS Technologies, Inc.Inventors: Jonathan C Griffiths, Gaurav Sethi, James R Webster
-
Patent number: 8441412Abstract: A method and apparatus for displaying data on bi-stable and non-bi-stable displays is provided. The apparatus includes a controller chip capable of being connected to a non-bi-stable display through a first interface channel and also capable of being connected to a bi-stable display via the first interface channel and an additional second interface channel. When connected the non-bi-stable display, the second interface channel is not connected. The second interface channel may carry mode information bits to the bi-stable display module to allow the bi-stable display to utilize power-saving features.Type: GrantFiled: January 26, 2011Date of Patent: May 14, 2013Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: William Cummings
-
Publication number: 20130113771Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for alternating the polarity of a voltage across a display element. In one aspect, a display element is maintained in a current state following an alternation of polarity. A driving signal waveform is transitioned from a hold voltage of a first polarity substantially directly to a write voltage of a second polarity, and transitioned substantially directly from the write voltage of the second polarity to a hold voltage of the second polarity.Type: ApplicationFiled: November 7, 2011Publication date: May 9, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Mark M. Todorovich, Nao S. Chuei
-
Publication number: 20130113810Abstract: Systems, methods and apparatus are provided for electromechanical systems devices having a sidewall spacer along at least one sidewall of a conductive line. An electromechanical systems device can include a sidewall spacer along at least one sidewall of a conductive line under a movable layer. The sidewall spacer can be sloped such that the sidewall spacer has a decreasing width away from a substrate under the movable layer. The conductive line can be configured to route an electrical signal to the electromechanical systems device. In some implementations, a black mask structure of an electromechanical systems device can include the conductive line.Type: ApplicationFiled: November 4, 2011Publication date: May 9, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Chok Wah Ho, Fan Zhong
-
Patent number: 8437071Abstract: An array of display elements, such as interferometric modulators, is integrated with collapsible cavity microelectromechanical system (MEMS) electrical switches. The electrical switches and the display elements may be at least partially formed with the same manufacturing operations. The switches may form row or column select functions for the display elements.Type: GrantFiled: June 20, 2012Date of Patent: May 7, 2013Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: Clarence Chui
-
Patent number: 8435838Abstract: A MEMS device may be package with a desiccant to provide a moisture-free environment. In order to avoid undesirable effects on the MEMS device, the desiccant may be selected or treated so as to be compatible with a particular MEMS device. This treatment may include baking of the desiccant to as to cause outgassing of moisture or other undesirable material. The structure of the MEMS device may also be altered to improve compatibility with particular desiccants.Type: GrantFiled: September 28, 2007Date of Patent: May 7, 2013Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Yen Hua Lin, Rihui He, Lingling Wu, Lauren Palmateer, David Heald
-
Patent number: 8437070Abstract: 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: GrantFiled: October 11, 2011Date of Patent: May 7, 2013Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: William J. Cummings
-
Publication number: 20130106712Abstract: This disclosure provides systems, methods and apparatus related to touchscreens where glare from locations behind a front surface are reduced. In certain implementations, a bulk diffuser can be provided at one or more locations between a cover plate and a touch panel of a touchscreen or between the touchscreen and a display device. Various properties associated with the bulk diffuser, including a haze level and thickness, can be selected so as to yield a desired glare reduction in touchscreen devices that utilize different displays. Such displays can include an interferometric modulator-based display, as well as other types of displays.Type: ApplicationFiled: November 1, 2011Publication date: May 2, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: William J. Cummings, Marek Mienko, Hamid Tavakoli