Patent application number | Description | Published |
20090201008 | METHODS FOR MEASUREMENT AND CHARACTERIZATION OF INTERFEROMETRIC MODULATORS - Various methods are described to characterize interferometric modulators or similar devices. Measured voltages across interferometric modulators may be used to characterize transition voltages of the interferometric modulators. Measured currents may be analyzed by integration of measured current to provide an indication of a dynamic response of the interferometric modulator. Frequency analysis may be used to provide an indication of a hysteresis window of the interferometric modulator or mechanical properties of the interferometric modulator. Capacitance may be determined through signal correlation, and spread-spectrum analysis may be used to minimize the effect of noise or interference on measurements of various interferometric modulator parameters. | 08-13-2009 |
20090201009 | METHODS FOR MEASUREMENT AND CHARACTERIZATION OF INTERFEROMETRIC MODULATORS - Various methods are described to characterize interferometric modulators or similar devices. Measured voltages across interferometric modulators may be used to characterize transition voltages of the interferometric modulators. Measured currents may be analyzed by integration of measured current to provide an indication of a dynamic response of the interferometric modulator. Frequency analysis may be used to provide an indication of a hysteresis window of the interferometric modulator or mechanical properties of the interferometric modulator. Capacitance may be determined through signal correlation, and spread-spectrum analysis may be used to minimize the effect of noise or interference on measurements of various interferometric modulator parameters. | 08-13-2009 |
20090201033 | METHODS FOR MEASUREMENT AND CHARACTERIZATION OF INTERFEROMETRIC MODULATORS - Various methods are described to characterize interferometric modulators or similar devices. Measured voltages across interferometric modulators may be used to characterize transition voltages of the interferometric modulators. Measured currents may be analyzed by integration of measured current to provide an indication of a dynamic response of the interferometric modulator. Frequency analysis may be used to provide an indication of a hysteresis window of the interferometric modulator or mechanical properties of the interferometric modulator. Capacitance may be determined through signal correlation, and spread-spectrum analysis may be used to minimize the effect of noise or interference on measurements of various interferometric modulator parameters. | 08-13-2009 |
20090201034 | METHODS FOR MEASUREMENT AND CHARACTERIZATION OF INTERFEROMETRIC MODULATORS - Various methods are described to characterize interferometric modulators or similar devices. Measured voltages across interferometric modulators may be used to characterize transition voltages of the interferometric modulators. Measured currents may be analyzed by integration of measured current to provide an indication of a dynamic response of the interferometric modulator. Frequency analysis may be used to provide an indication of a hysteresis window of the interferometric modulator or mechanical properties of the interferometric modulator. Capacitance may be determined through signal correlation, and spread-spectrum analysis may be used to minimize the effect of noise or interference on measurements of various interferometric modulator parameters. | 08-13-2009 |
20090201242 | SENSING TO DETERMINE PIXEL STATE IN A PASSIVELY ADDRESSED DISPLAY ARRAY - Devices and methods for determining an operational state of a selected display device in an array of display devices. One method includes determining the operational state of a particular display device in the array by measuring an electrical characteristic of a plurality of the display devices, and determining the operational state based at least in part on the three measurements. In some embodiments, the electrical characteristic is capacitance, in other embodiments impedance can be the measured electrical characteristic. Such methods can be applied to IMOD displays and other displays, including LCD displays. | 08-13-2009 |
20090201282 | METHODS OF TUNING INTERFEROMETRIC MODULATOR DISPLAYS - A method of tuning interferometric modulator display driving is disclosed. In one embodiment, the method comprising applying at least one voltage to an interferometric modulator display element, and while applying the voltage, adjusting a release and an actuation response time for the interferometric modulator. In another embodiment, the release and actuation response time are adjusted by adjusting the bias voltage applied to the device. Determining how to adjust the bias voltage may be done by measuring the current response of the device. | 08-13-2009 |
20090204349 | MEASUREMENT AND APPARATUS FOR ELECTRICAL MEASUREMENT OF ELECTRICAL DRIVE PARAMETERS FOR A MEMS BASED DISPLAY - Methods and devices to measure threshold voltages of MEMS devices are disclosed. The threshold voltages are based on test voltages which cause the devices to change states. State changes of the device are detected by monitoring integrated current or charge used to drive the test voltages. | 08-13-2009 |
20090204350 | METHODS FOR MEASUREMENT AND CHARACTERIZATION OF INTERFEROMETRIC MODULATORS - Various methods are described to characterize interferometric modulators or similar devices. Measured voltages across interferometric modulators may be used to characterize transition voltages of the interferometric modulators. Measured currents may be analyzed by integration of measured current to provide an indication of a dynamic response of the interferometric modulator. Frequency analysis may be used to provide an indication of a hysteresis window of the interferometric modulator or mechanical properties of the interferometric modulator. Capacitance may be determined through signal correlation, and spread-spectrum analysis may be used to minimize the effect of noise or interference on measurements of various interferometric modulator parameters. | 08-13-2009 |
20090207159 | METHOD AND APPARATUS FOR SENSING, MEASUREMENT OR CHARACTERIZATION OF DISPLAY ELEMENTS INTEGRATED WITH THE DISPLAY DRIVE SCHEME, AND SYSTEM AND APPLICATIONS USING THE SAME - Methods and systems for electrical sensing, measurement and characterization of display elements are described. An embodiment includes integrating the electrical sensing, measurement and characterization with the display drive scheme. This embodiment allows for measurement of DC or operational hysteresis voltages and/or response times of interferometric modulator MEMS devices, for example, to be fully integrated with the display driver IC and/or the display drive scheme. Another embodiment allows these measurements to be performed and used without resulting in display artifacts visible to a human user. Another embodiment allows the measurement circuitry to be integrated with the display driver IC and/or the display drive scheme reusing several existing circuitry components and features, thus allowing for integration of the measurement method. | 08-20-2009 |
20090213107 | METHOD AND APPARATUS FOR SENSING, MEASUREMENT OR CHARACTERIZATION OF DISPLAY ELEMENTS INTEGRATED WITH THE DISPLAY DRIVE SCHEME, AND SYSTEM AND APPLICATIONS USING THE SAME - Methods and systems for electrical sensing, measurement and characterization of display elements are described. An embodiment includes integrating the electrical sensing, measurement and characterization with the display drive scheme. This embodiment allows for measurement of DC or operational hysteresis voltages and/or response times of interferometric modulator MEMS devices, for example, to be fully integrated with the display driver IC and/or the display drive scheme. Another embodiment allows these measurements to be performed and used without resulting in display artifacts visible to a human user. Another embodiment allows the measurement circuitry to be integrated with the display driver IC and/or the display drive scheme re-using several existing circuitry components and features, thus allowing for integration of the measurement method and its use relatively easily. | 08-27-2009 |
20090251157 | METHODS FOR MEASUREMENT AND CHARACTERIZATION OF INTERFEROMETRIC MODULATORS - Various methods are described to characterize interferometric modulators or similar devices. Measured voltages across interferometric modulators may be used to characterize transition voltages of the interferometric modulators. Measured currents may be analyzed by integration of measured current to provide an indication of a dynamic response of the interferometric modulator. Frequency analysis may be used to provide an indication of a hysteresis window of the interferometric modulator or mechanical properties of the interferometric modulator. Capacitance may be determined through signal correlation, and spread-spectrum analysis may be used to minimize the effect of noise or interference on measurements of various interferometric modulator parameters. | 10-08-2009 |
20100039409 | METHOD AND APPARATUS FOR SENSING, MEASUREMENT OR CHARACTERIZATION OF DISPLAY ELEMENTS INTEGRATED WITH THE DISPLAY DRIVE SCHEME, AND SYSTEM AND APPLICATIONS USING THE SAME - Methods and systems for electrical sensing, measurement and characterization of display elements are described. An embodiment includes integrating the electrical sensing, measurement and characterization with the display drive scheme. This embodiment allows for measurement of DC or operational hysteresis voltages and/or response times of interferometric modulator MEMS devices, for example, to be fully integrated with the display driver IC and/or the display drive scheme. Another embodiment allows these measurements to be performed and used without resulting in display artifacts visible to a human user. Another embodiment allows the measurement circuitry to be integrated with the display driver IC and/or the display drive scheme re-using several existing circuitry components and features, thus allowing for integration of the measurement method and its use relatively easily. | 02-18-2010 |
20100039695 | METHODS FOR MEASUREMENT AND CHARACTERIZATION OF INTERFEROMETRIC MODULATORS - Various methods are described to characterize interferometric modulators or similar devices. Measured voltages across interferometric modulators may be used to characterize transition voltages of the interferometric modulators. Measured currents may be analyzed by integration of measured current to provide an indication of a dynamic response of the interferometric modulator. Frequency analysis may be used to provide an indication of a hysteresis window of the interferometric modulator or mechanical properties of the interferometric modulator. Capacitance may be determined through signal correlation, and spread-spectrum analysis may be used to minimize the effect of noise or interference on measurements of various interferometric modulator parameters. | 02-18-2010 |
20100187422 | INTEGRATED LIGHT EMITTING AND LIGHT DETECTING DEVICE - Methods and systems for providing a light device that can emit light and sense light are disclosed. In one embodiment, a lighting device includes a light guide having a planar first surface, the light guide configured such that at least some ambient light enters the light guide through the first surface and propagates therein, and at least one light detector disposed along an edge of the light guide, the at least one detector optically coupled to the light guide to receive light propagating therein. The light detector can be configured to produce a control signal. In some embodiments, the lighting device also includes at least one light turning feature disposed on the first surface, the at least one light turning feature configured to direct light incident into the light guide through the first surface. | 07-29-2010 |
20100225739 | METHOD OF REDUCING EFFECTIVE PIXEL PITCH IN ELECTROHOLOGRAPHIC DISPLAY AND ELECTROHOLOGRAPHIC DISPLAY INCLUDING THE SAME - An electroholographic display system ( | 09-09-2010 |
20100238528 | METHOD AND SYSTEM FOR ELECTROHOLOGRAPHIC DISPLAY WITH ZEROTH-ORDER DIFFRACTION SUPPRESSION - An electroholographic display system ( | 09-23-2010 |
20110148837 | CHARGE CONTROL TECHNIQUES FOR SELECTIVELY ACTIVATING AN ARRAY OF DEVICES - Methods and apparatus are described by which charge may be delivered to an array of electromechanical devices (e.g., MEMS or NEMS) driven in parallel such that only a desired number of the devices are actuated. Specific embodiments relate to visual displays implemented using interferometric modulators (IMODs). In particular, spatial half-toning techniques for achieving grayscale in such displays are described that are not characterized by the power penalty associated with conventional spatial half-toning techniques. | 06-23-2011 |
20110149375 | INTEGRATED TOUCH FOR IMOD DISPLAYS USING BACK GLASS - An interferometric modulator (“IMOD”) display utilizes ambient light and incorporates touch sensing without reducing the amount of ambient light that reaches the MEMS modulators, and without introducing any optical distortion or loss of performance. Electrodes for touch sensing are located at a back glass of the inteferometric display, and are used in conjunction with electrodes whose primary function is to activate the pixels of the MEMS display, in order to sense a touch. The touch deflects the IMOD layers and is sensed through the various display layers at the rear of the display. | 06-23-2011 |
20110176196 | METHODS AND DEVICES FOR PRESSURE DETECTION - Methods and devices for detecting pressure applied to a device are described herein. In one embodiment, the device comprises a first layer and a second layer positioned below the first layer. The first layer and the second layer form a cavity. The device further comprises a plurality of display elements disposed in the cavity. The device further comprises a sensor configured to measure the relative movement between the first layer and the second layer. In another embodiment, the device may detect sound waves. | 07-21-2011 |
20110235156 | METHODS AND DEVICES FOR PRESSURE DETECTION - Methods and devices for detecting pressure applied to a device are described herein. In one embodiment, the device comprises a first layer and a second layer positioned below the first layer. The first layer and the second layer form a cavity. The device further comprises a plurality of display elements disposed in the cavity. The device further comprises a sensor configured to measure the relative movement between the first layer and the second layer. In another embodiment, the device may detect sound waves. | 09-29-2011 |
20110255143 | ANALOG INTERFEROMETRIC MODULATOR - 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. | 10-20-2011 |
20110260956 | ACTIVE MATRIX CONTENT MANIPULATION SYSTEMS AND METHODS - This disclosure provides systems, methods and apparatus for sharing image data between interconnected pixels in a display device. Some implementations of a display device may include an array of pixels, where each pixel includes a display element, a memory element, one or more data interconnect lines connecting the pixel to one or more other pixels, one or more switches positioned in one or more of the interconnect lines and one or more scroll data lines connected to one or more of the switches. Some implementations may enable scrolling of image data on a display without writing new image data to the display. Further, in some implementations, the display element may be an interferometric modulator (IMOD). Some other implementations may additionally include a display, a processor configured to communicate with the display and a memory device that is configured to communicate with the processor. | 10-27-2011 |
20110261036 | APPARATUS AND METHOD FOR MASSIVE PARALLEL DITHERING OF IMAGES - This disclosure provides systems, methods and apparatus for parallel dithering images are disclosed. In one aspect, a display device includes: a front substrate; a backplate opposing the front substrate; an array of display elements associated with the front substrate; and an array of processing units associated with the backplate. Each of the processing units is configured to process data for one or more of the display elements for dithering an image. Each of the processing units is spatially arranged to correspond to the one or more display elements for which it is configured to process data. The array of processing units can perform a faster dithering process than a single processor sequentially performing all computation for dithering. Further, the position of the array of processing units allows effective image data processing in an active-matrix type display device while utilizing the space of the backplate thereof. | 10-27-2011 |
20110261037 | ACTIVE MATRIX PIXELS WITH INTEGRAL PROCESSOR AND MEMORY UNITS - This disclosure provides methods, systems and apparatus for storing and processing image data at the pixel using augmented active matrix pixels. Some implementations of a display device may include a substrate, an array of display elements associated with the substrate and configured to display an image, an array of processor units associated with the substrate, wherein each processor unit is configured to process image data for a respective portion of the display elements and an array of memory units associated with the array of processor units, wherein each memory unit is configured to store data for a respective portion of the display elements. Some implementations may enable color processing image data at the pixel, layering of image data at the pixel or temporal modulation of image data at the pixel. Further, in some implementations, the display element may be an interferometric modulator (IMOD). Some other implementations may additionally include a display, a processor configured to communicate with the display and a memory device that is configured to communicate with the processor. | 10-27-2011 |
20110261046 | SYSTEM AND METHOD FOR PIXEL-LEVEL VOLTAGE BOOSTING - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying an image using voltage shifting. In one aspect, a display device includes an array of display elements, each display element configurable into one of a plurality of states upon application of one of a plurality of voltages, and an array of voltage shifters, each voltage shifter associated with one or more of the display elements and configured to receive at least one input voltage from a display driver circuit and output at least one output voltage different than the input voltage to the associated one or more display elements. The voltage shifters can include, for example, at least one of an amplifier, a differential amplifier, an operational amplifier, a charge pump, a level shifter and a digital-to-analog converter. | 10-27-2011 |
20110261088 | DIGITAL CONTROL OF ANALOG DISPLAY ELEMENTS - This disclosure provides methods, systems, and apparatus, including computer programs encoded on computer storage media, for controlling analog display elements. In one aspect, a control scheme can be used for controlling analog display elements, including interferometric modulators. This control scheme can be used to drive the analog display elements to a plurality of discrete different states, and can be referred to as “digital” control of the display element state. | 10-27-2011 |
20120032692 | MEMS GAS SENSOR - Systems and methods for sensing a chemical or gas species of interest are provided. In one aspect, a method of sensing a chemical includes determining a capacitance change between at least two layers in a MEMS device, the capacitance between the at least two layers indicative of a presence of one or more chemicals; and identifying the presence of the one or more chemicals based on a determined electrical response of the at least two layers and the determined capacitance change. | 02-09-2012 |
20120056855 | INTERFEROMETRIC DISPLAY DEVICE - This disclosure provides systems, methods, and apparatus including one or more capacitance control layers to decrease the magnitude of an electric field between a movable layer and an electrode. In one aspect, a display device includes an electrode, a movable layer, and a capacitance control layer. At least a portion of the movable layer can be configured to move toward the electrode when a voltage is applied across the electrode and the movable layer and an interferometric cavity can be disposed between the movable layer and the first electrode. The capacitance control layer can be configured to decrease the magnitude of an electric field between the movable layer and the electrode when the voltage is applied across the movable layer and the electrode. | 03-08-2012 |
20120153970 | CAPACITIVE TOUCH SENSING DEVICES AND METHODS OF MANUFACTURING THEREOF - The present disclosure provides systems, methods, and apparatus for sensing the location(s) of conductive objects disposed near a sensor array. In one aspect, a sensor array includes a conductive row and a conductive column formed of non-transparent material(s). At least a portion of the conductive row overlaps at least a portion of the conductive column and each of the conductive rows and columns include sensing elements. The sensing elements at least partially define volumes including non-conductive and optically transparent material(s) to limit the loss of light that passes therethrough. | 06-21-2012 |
20120161009 | INTEGRATED LIGHT EMITTING AND LIGHT DETECTING DEVICE - Methods and systems for providing a light device that can emit light and sense light are disclosed. In one embodiment, a lighting device includes a light guide having a planar first surface, the light guide configured such that at least some ambient light enters the light guide through the first surface and propagates therein, and at least one light detector disposed along an edge of the light guide, the at least one detector optically coupled to the light guide to receive light propagating therein. The light detector can be configured to produce a control signal. In some embodiments, the lighting device also includes at least one light turning feature disposed on the first surface, the at least one light turning feature configured to direct light incident into the light guide through the first surface. | 06-28-2012 |
20120212468 | METHOD AND APPARATUS FOR SENSING, MEASUREMENT OR CHARACTERIZATION OF DISPLAY ELEMENTS INTEGRATED WITH THE DISPLAY DRIVE SCHEME, AND SYSTEM AND APPLICATIONS USING THE SAME - Methods and systems for electrical sensing, measurement and characterization of display elements are described. An embodiment includes integrating the electrical sensing, measurement and characterization with the display drive scheme. This embodiment allows for measurement of DC or operational hysteresis voltages and/or response times of interferometric modulator MEMS devices, for example, to be fully integrated with the display driver IC and/or the display drive scheme. Another embodiment allows these measurements to be performed and used without resulting in display artifacts visible to a human user. Another embodiment allows the measurement circuitry to be integrated with the display driver IC and/or the display drive scheme re-using several existing circuitry components and features, thus allowing for integration of the measurement method and its use relatively easily. | 08-23-2012 |
20120249122 | MEASUREMENT AND APPARATUS FOR ELECTRICAL MEASUREMENT OF ELECTRICAL DRIVE PARAMETERS FOR A MEMS BASED DISPLAY - Methods and devices to measure voltage margins of electromechanical devices are disclosed. The voltage margins are determined based on responses to test voltages which cause the devices to change states. State changes of the devices are detected by monitoring integrated current or charge used to drive the devices with the test voltages. | 10-04-2012 |
20120256615 | MEASUREMENT AND APPARATUS FOR ELECTRICAL MEASUREMENT OF ELECTRICAL DRIVE PARAMETERS FOR A MEMS BASED DISPLAY - Methods and devices to measure voltage margins of electromechanical devices are disclosed. The voltage margins are determined based on responses to test voltages which cause the devices to change states. State changes of the devices are detected by monitoring integrated current or charge used to drive the devices with the test voltages. | 10-11-2012 |
20130021309 | METHODS AND DEVICES FOR DRIVING A DISPLAY USING BOTH AN ACTIVE MATRIX ADDRESSING SCHEME AND A PASSIVE MATRIX ADDRESSING SCHEME - Methods and devices for updating an array of display elements using both an active matrix addressing scheme and a passive matrix addressing scheme are described herein. In one embodiment, the method comprises selecting between an active matrix addressing scheme and a passive matrix addressing scheme. The method further comprises driving the array of display elements using the selected addressing scheme. | 01-24-2013 |
20130021313 | METHODS AND DEVICES FOR VOLTAGE REDUCTION FOR ACTIVE MATRIX DISPLAYS USING VARIABILITY OF PIXEL DEVICE CAPACITANCE - Methods and devices for reducing the voltage required to update an array of display elements having variable capacitance are described herein. In one implementation, the method includes driving a display element to a first state using a reset drive line. The method further includes driving the display element to a second state using a column drive line. The capacitance of the display element is higher in the first state than in the second state | 01-24-2013 |
20130120465 | SYSTEMS AND METHODS FOR DRIVING MULTIPLE LINES OF DISPLAY ELEMENTS SIMULTANEOUSLY - 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. | 05-16-2013 |
20130135320 | TRI-STATE MEMS DEVICE AND DRIVE SCHEMES - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for driving an array of tri-state devices. The array of tri-state devices may form an array of display elements, and the array may be passively addressed. According to one aspect, the array includes two segment lines and one common line connected to each tri-state display element. According to another aspect, the array includes two common lines and one segment line connected to each tri-state display element. | 05-30-2013 |
20130135325 | SYSTEMS, DEVICES, AND METHODS FOR DRIVING AN ANALOG INTERFEROMETRIC MODULATOR - Systems, devices, and methods for calibrating and controlling the actuation of an analog interferometric modulator are described herein. An electrode of a movable layer of the analog interferometric modulator may include a part for receiving a drive voltage, and an electrically isolated part. A charge may be sensed from the electrically isolated part, and used to determine the position of the movable layer or provide feedback to the drive voltage. | 05-30-2013 |
20130135326 | SYSTEMS, DEVICES, AND METHODS FOR DRIVING AN INTERFEROMETRIC MODULATOR - This disclosure provides systems, methods, and apparatus for controlling the actuation of an analog interferometric modulator. In one aspect, a voltage may be determined from a sense electrode. A distance between one or more of the electrodes may be determined based on the voltage. The sense electrode may be capacitively coupled to another electrode, and may be implemented in a mirror of a movable layer of an interferometric modulator, or may be implemented in a floating fixed layer of an interferometric modulator. | 05-30-2013 |
20130135335 | METHODS AND APPARATUS FOR INTERPOLATING COLORS - This disclosure provides methods, apparatus, and computer programs encoded on computer storage media for displaying a target color on an electronic display having display devices capable of displaying a set of native colors. In one aspect, the method includes identifying a plurality of weights including at least a first weight and one or more other weights, selecting a first color from the set of native colors that is closest to the target color and assigning it to the first weight, determining an error between the first color and the target color, recursively assigning a subsequent color from the set of native colors to the one or more other weights. Each subsequent color is selected based on the target color and an error normalized by previously assigned weights. The method also displays each assigned color according to its weight on the electronic display. | 05-30-2013 |
20130135364 | METHODS AND APPARATUS FOR INTERPOLATING COLORS - This disclosure provides methods, apparatus, and computer programs encoded on computer storage media for converting drive instructions for a plurality of display devices to drive instructions for a first display device. In one aspect, a method includes processing the drive instructions for the plurality of display devices to produce a first color in a set of potential colors for the plurality of display devices, selecting a color for the first display device that approximates the produced first color, displaying the selected color with the first display device, determining an error between the selected color and the produced first color, and diffusing the error by displaying at least another color on at least a portion of the plurality of display devices. | 05-30-2013 |
20130182017 | DEVICE AND METHOD FOR HIGH REFLECTANCE MULTI-STATE ARCHITECTURES - This disclosure provides systems, methods and apparatus for device and methods for high reflectance multi-state architectures. In one aspect, a display device can include a plurality of reflective pixels including subpixels. Each subpixel can be selectively switched among first, second, and third states, with each state having a different spectral reflectance. Each subpixel has a spectral reflectance associated with a first set of primary colors and with a second set of primary colors. At least one of the colors in the second set of primary colors can be different from the colors in the first set of primary colors. The first set of primary colors can include colors that combine to produce white. A combination of colors of the first set of primary colors can have a brightness that is higher than the brightness of the combination of colors of the second set of primary colors. | 07-18-2013 |
20140028686 | DISPLAY SYSTEM WITH THIN FILM ENCAPSULATED INVERTED IMOD - This disclosure provides systems, methods and apparatus for encapsulating a display device. In one aspect, an interferometric modulator (IMOD) is formed on a substrate. The IMOD includes an absorbing layer separated from the substrate, a reflective layer between the absorbing layer and the substrate, and an optical gap between the absorbing layer and the reflective layer. One or more thin film encapsulation layers hermetically seal the IMOD between the one or more thin film encapsulation layers and the substrate. In another aspect, an optical or functional layer can be formed over the one or more thin film encapsulation layers. | 01-30-2014 |
20140071139 | IMOD PIXEL ARCHITECTURE FOR IMPROVED FILL FACTOR, FRAME RATE AND STICTION PERFORMANCE - Pixels that include display elements that are configured with different structural dimensions corresponding to the color of light they provide are disclosed. In one implementation, a display device includes an array having a plurality of electromechanical pixels disposed on a substrate, each pixel including at least a first display element and a second display element. Each of the first and second display elements interferometrically modulating light by moving a reflective element between a relaxed position spaced apart from the substrate to an actuated position further away from the substrate than the relaxed position by applying a voltage across the reflective element and a stationary electrode. The stationary electrode of each display element is sized to provide actuation of the movable reflective element using the same actuation voltage even though the electrical gap through which the reflective element moves is different within a pixel. | 03-13-2014 |
20140125707 | COLOR PERFORMANCE AND IMAGE QUALITY USING FIELD SEQUENTIAL COLOR (FSC) TOGETHER WITH SINGLE-MIRROR IMODS - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for applying field-sequential color (FSC) methods to displays that include single-mirror interferometric modulators (IMODs), which may be multi-state IMODs or analog IMODs. In one aspect, grayscale levels may be provided by varying a mirror/absorber gap height between black and white states. In other implementations, grayscale levels may be obtained by varying the gap height between the black state and second-order color peaks. | 05-08-2014 |
20140139540 | METHODS AND APPARATUS FOR INTERPOLATING COLORS - This disclosure provides methods, apparatus, and computer programs encoded on computer storage media for displaying a final color on an electronic display capable of displaying a set of native colors. In one aspect, a method includes producing a first color from drive instructions for a plurality of display devices. Some aspects include identifying a plurality of weights including at least a first weight and one or more other weights, wherein the one or more other weights are less than the first weight and proportional to the first weight. The method also includes associating the first weight with a first color from the set of native colors and recursively assigning one or more colors from the set of native colors to the one or more other weights. Some aspects determine an error between one or more native colors and a desired color. The final color is then displayed on the electronic display by displaying each of the assigned colors according to its weight. | 05-22-2014 |
20140160137 | FIELD-SEQUENTIAL COLOR MODE TRANSITIONS - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for selecting an operational mode of a reflective display device from a plurality of operational modes that include at least one field-sequential color mode. The operational mode may be selected based, at least in part, on ambient light data. The ambient light data may include ambient light intensity data, ambient light spectrum data and/or ambient light direction data. The operational mode may be selected based, at least in part, on other criteria, such as display application type and/or battery state data. | 06-12-2014 |
20140168040 | MOTION COMPENSATED VIDEO HALFTONING - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for halftoning video images for presentation on an electronic display. In one aspect, input frames of video data may be received, where each input frame includes a number of input pixels, each input pixel having a respective first spatial coordinate location. For each input pixel, an output pixel is generated using a selected halftone value. The selected halftone value is substantially identical to a halftone value of a corresponding pixel in a comparison frame, where a spatial coordinate location of the “corresponding pixel” is determined based on a motion vector of an image element with which the pixel is associated. | 06-19-2014 |