Abstract: A display device comprises a layer of display cells separated from each other by partition walls and filled with a display fluid. The display of the invention is divided into a non-watermark area and a watermark area, the latter forming a watermark. The watermark aims to protect against counterfeiting or to be used for decoration purposes. The watermark is visible at certain viewing angles and/or under certain lighting conditions and it does not interfere with displaying of the regular images. For example, each of the display cells in the watermark area may have a different size from each of the display cells in the non-watermark area. Alternatively, the watermark area differs from the non-watermark area in at least one parameter selected from partition wall height, partition wall width and the shape of each display cell, and the watermark area is divided into at least two parts having differing values of the parameter.

Abstract: This disclosure is directed to methods, apparatuses, and systems for providing driving signals to present electronic content on an electronic display. The electronic display may include an electronic paper display that utilizes electronic ink to render the electronic content. An electronic signal can be generated by a display controller to drive individual pixels to a black state, a white state, or a gray state in-between the black state and the white state. In some instances, the display controller can provide a first driving signal to set a pixel to a target state, followed by turning a power off for the display. After a predetermined amount of time, a second driving signal can be provided to drive the pixel to the target state, without changing the target state of the pixel.

Abstract: An electrophoretic element according to an embodiment of the present invention includes: a first substrate and a second substrate facing each other; and an electrophoretic layer provided between the first substrate and the second substrate, and has a plurality of pixels. In each pixel, the electrophoretic layer includes a dispersion medium, and a plurality of types of electrophoretic particles dispersed in the dispersion medium. The plurality of types of electrophoretic particles include first electrophoretic particles and second electrophoretic particles that are charged with the same polarity and have different threshold characteristics from each other. In each pixel, the electrophoretic element includes at least three electrodes to which different potentials can be applied.

Abstract: A media includes a frame and an e-paper display recessed relative to a portion of the frame.

Abstract: Devices and techniques for electronically erasing an externally addressed electrophoretic drawing device are described. An electronically-erasable drawing device comprises an electro-optic display medium and interdigitated electrodes disposed adjacent one surface of the medium and configured to drive the medium to an intermediate (gray) optical state. A mobile electronic drawing implement may include electrodes configured to apply a fringing electric field to an electro-optic display medium from one side of the medium, the fringing electric field being arranged to drive a portion of the display medium adjacent the implement to an intermediate optical state, the electrodes being movable relative to the medium.

Abstract: An electrophoretic element according to an embodiment of the present invention includes: a first substrate and a second substrate facing each other; and an electrophoretic layer provided between the first substrate and the second substrate, and has a plurality of pixels. In each pixel, the electrophoretic layer includes a dispersion medium, and a plurality of types of electrophoretic particles dispersed in the dispersion medium. The plurality of types of electrophoretic particles include first electrophoretic particles and second electrophoretic particles that are charged with the same polarity and have different threshold characteristics from each other. In each pixel, the first substrate includes at least three electrodes to which different potentials can be applied.

Abstract: The invention relates to electrophoretic layers containing at least five different particles, and to driving methods for displaying at least five, and in some embodiments, six different colors at each pixel or sub-pixel. The electrophoretic layers may also contain uncharged neutral buoyancy particles, and the driving methods may include special shaking waveform sequences.

Abstract: In one embodiment, a display screen includes one or more pixels that are configured to operate in multiple modes. The multiple modes include a first mode in which the one or more pixels modulate, absorb, or reflect visible light and a second mode in which the one or more pixels are substantially transparent to visible light. When the one or more pixels are in the second mode a component behind the display screen is viewable through the one or more pixels.

Abstract: The present invention is directed to driving methods for a color display device which can display high quality color states. The display device utilizes an electrophoretic fluid which comprises three types of pigment particles having different optical characteristics, and provides for displaying at a viewing surface not only the colors of the three types of particles but also the colors of binary mixtures thereof.

Abstract: A wavelength selective reflection display (10) comprises a wavelength selective reflection medium (20) and a backing member (30) having a first, non-reflective optical state, and a second, reflective optical state. Both the wavelength selective reflection medium (20) and the backing member (30) are divided into pixels (40, 50, 60), and the backing member (30) is switchable between its first and second optical states on a pixel-by-pixel basis. The pixels of the backing member (30) are substantially aligned with those of the wavelength selective reflection medium (20).

Abstract: This invention relates to electrophoretic fluids, the use of these fluids for the preparation of an electrophoretic display device, and electrophoretic displays comprising such fluids.

Abstract: The present disclosure provides a display substrate, a manufacturing method thereof, and a display device. The display substrate includes a shielding pattern created from a layer identical to a pixel electrode and configured to prevent a display function of a display function layer from being adversely affected by a signal from a signal line.

Abstract: A method for addressing a bistable electro-optic display having at least one pixel comprises applying an addressing pulse to drive the pixel to a first optical state; leaving the pixel undriven for a period of time, thereby permitting the pixel to assume a second optical state different from the first optical state; and applying to the pixel a refresh pulse which substantially restores the pixel to the first optical state, the refresh pulse being short relative to the addressing pulse.

Abstract: The present application relates to the computer technical field, and discloses a portable desktop computer which is capable of solving the technical problem of inconvenient transportation and carrying of the desktop computer. The portable desktop computer comprises a columnar host and a flexible display; a columnar outer surface of the host is provided with a ring groove with which the flexible display is wound, and the host is provided with block pins used for blocking the flexible display within the ring groove. The portable desktop computer is featured with combining the host with the flexible display together for easily carrying and convenient transportation.

Abstract: A charge-receiving layer for an e-paper assembly includes a plurality of conductive paths spaced apart throughout an insulative matrix, with each conductive path including at least one elongate pattern of conductive particles.

Abstract: In one aspect, a device with dynamic optical properties comprises a fluid transfer component comprising a polymer film with one or more layers; an active region of the fluid transfer component comprising a plurality of fluid channels defined by one or more interior surfaces within the polymeric film. In one embodiment, each fluid channel comprises at least 1 row of fluid channels in a thickness direction of the polymeric film. Each fluid channel comprises a first fluid with a first optical property and the active region has a first optical state, and when the a flow source generates fluid flow for a second fluid with a second optical property different from the first optical property to flow through the fluid channels in the active region, the optical state of the active region changes from a first optical state to a second optical state different from the first optical state.

Abstract: The present invention is directed to an electrophoretic dispersion comprising charged pigment particles, in particular, an electrophoretic dispersion including both uncharged or lightly charged neutral buoyancy particles and uncharged or lightly charged additive particles. The combination improves the performance of an electrophoretic display, in particular the color state stability over time.

Abstract: A thin border display for an electronic device may comprise an optical assembly that includes a support frame and an electrophoretic display (EPD) structure attached to the support frame in a manner that allows for the display of the electronic device to exhibit a “thin border” or “borderless” look at a periphery of the electronic device. A portion of the EPD structure may at least partly curve around a curved portion of the support frame, the curved portion of the support frame being near the periphery of the support frame. In some embodiments, an electrode may be disposed at a periphery of the display to drive the margin of the display for achieving a thin border/borderless appearance. The EPD structure may include a backplane substrate that is either rigid or flexible.

Abstract: A method for driving an electro-optic display having a front electrode, a backplane and a display medium positioned between the front electrode and the backplane, the method comprising of applying a first driving phase to the display medium, the first driving phase having a first signal and a second signal, the first signal having a first polarity, a first amplitude as a function of time, and a first duration, the second signal succeeding the first signal and having a second polarity opposite to the first polarity, a second amplitude as a function of time, and a second duration, such that the sum of the first amplitude as a function of time integrated over the first duration and the second amplitude as a function of time integrated over the second duration produces a first impulse offset. The method further comprising applying a second driving phase to the display medium, the second driving phase produces a second impulse offset, wherein the sum of the first and second impulse offset is substantially zero.

Abstract: The present invention provides a pixel arrangement structure, comprising a plurality of pixel units, and each pixel unit comprising a first sub pixel, a second sub pixel, a third sub pixel and a fourth sub pixel, and the fourth sub pixel being a triangle, and the first sub pixel, the second sub pixel and the third sub pixel being respectively arranged around the fourth sub pixel, and respectively sharing three sides with the fourth sub pixel. The pixel arrangement structure of the present invention adds the white sub pixel to promote the transmission rate of the panel, and to reduce the energy consumption of the display, and meanwhile to be beneficial for implementation of the sub pixel rendering algorithm to promote the virtual resolution.

Abstract: The present invention provides driving methods for electrophoretic color display devices. The backplane system used for the driving methods is found to be simpler which renders color display devices more cost effective. More specifically, the driving method comprises first driving all pixels towards a color state by modulating only the common electrode, followed by driving all pixels towards their desired color states by maintaining the common electrode grounded and applying different voltages to the pixel electrodes.

Abstract: An electrophoretic display comprising a fluid including a first species of particles and a charge control agent disposed between first and second electrodes. When a first addressing impulse have an electrical polarity is applied to the medium, the first species of particles move in one direction relative to the electric field, but when a second addressing impulse, larger than the first addressing impulse but having the same electrical polarity, is applied to the medium, the first species of particles move in the opposed direction relative to the electric field.

Abstract: A display for an electronic device includes a plurality of pixel portions. Each pixel portion includes one or more electrophoretic capsules disposed above an organic light emitting diode layer. A first electrode assembly and a second electrode assembly are operable to control the one or more electrophoretic capsules. A control circuit selectively controls the first electrode assembly to cause operation of the one or more electrophoretic capsules in an optically non-transmissive state and the second electrode assembly to cause operation of the one or more electrophoretic capsules in an optically transmissive state.

Abstract: A driving method of an electrophoretic display having at least one display particle is provided. The driving method includes the following steps. A first voltage difference is applied to a data line in a first period, in which the data line corresponds to one of the display particles. At least one particle restore period is inserted in the first period, and a second voltage difference is applied to the data line in the particle restore periods, in which the second voltage difference is different from the first voltage difference. With this method disclosed here, the maxima brightness, maxima darkness, contrast ratio, color saturation, bistability, and image updating time can be largely improved.

Abstract: Embodiments of the invention include a semiconductor light emitting device including a semiconductor structure. The semiconductor structure includes a light emitting layer disposed between an n-type region and a p-type region. A wavelength converting structure is disposed in a path of light emitted by the light emitting layer. A diffuse reflector is disposed along a sidewall of the semiconductor light emitting device and the wavelength converting structure. The diffuse reflector includes a pigment. A reflective layer is disposed between the diffuse reflector and the semiconductor structure. The reflective layer is a different material from the diffuse reflector.

Abstract: A display device is described which can be updated by applying pressure with a passive object. The display device comprises a transparent top conductor layer, a middle conductor layer and a bottom conductor layer. The middle conductor layer is segmented into a plurality of independent areas and a pixel of the display device is defined based at least in part on the way that the middle conductor layer is segmented. The display device further comprises an electrophoretic ink layer between the top and middle conductor layers, a layer of piezo-electric material between the middle and bottom conductor layers, and an electrical connection between the bottom and top conductor layers.

Abstract: A reflective image display comprising of a reflection enhancing layer comprising of a plurality of approximately spherical indentations is placed adjacent a sheet comprising of a plurality of hemispherical protrusions. The radii of curvature of the spherical indentations substantially coincides with the center of curvature of the adjacently located hemispheres to enhance the white paper-like appearance of the display while efficiently enabling optional color filters to yield saturated color.

Abstract: A user device includes an unpowered display and a touch sensor. User input such as touching or writing on the unpowered display with a stylus produces visual indicia indicative of the input. A touch sensor is used to acquire touch data indicative of the user input. The touch data may be sent wirelessly to another device, such as a server for further processing.

Abstract: A thin border display for an electronic device may comprise an optical assembly that includes a support frame and an electrophoretic display (EPD) structure attached to the support frame in a manner that allows for the display of the electronic device to exhibit a “thin border” or “borderless” look at a periphery of the electronic device. A portion of the EPD structure may at least partly curve around a curved portion of the support frame, the curved portion of the support frame being near the periphery of the support frame. In some embodiments, the EPD structure includes a transparent protective substrate disposed on a rear surface of a flexible backplane substrate within the flat outer region where a driver chip is disposed on a front surface of the flexible backplane substrate. The transparent protective substrate protects the driver chip attachment from being damaged during manufacture.

Abstract: The present disclosure relates to a source drive IC of liquid crystal panels. The source drive IC includes a digital signals module, a Gamma reference voltage module, a comparator, a power voltage module, a selector, a digital-to-analog converter (DAC) and a buffer amplifier. In addition, a driving method of liquid crystal panels may reduce the power consumption of the buffer amplifier to decrease the temperature of the source drive IC so as to enhance the reliability of the liquid crystal panel.

Abstract: A light emitting device includes a planar light emitting body configured to emit light in a planar shape, and a transparent member configured to control the light from the planar light emitting body. The transparent member has a light incidence surface arranged so as to face a light emitting surface of the planar light emitting body and configured to cause the light from the planar light emitting body to be incident on the transparent member and a light emission surface configured to emit, to the outside, the light which is propagated in the transparent member. The transparent member is formed so as to extend in a predetermined direction and formed such that a distance between the light incidence surface and the light emission surface changes in accordance with a position in the predetermined direction.

Abstract: The present invention provides driving methods for a color display device in which each pixel can display four high-quality color states. More specifically, an electrophoretic fluid is provided which comprises four types of particles, dispersed in a solvent or solvent mixture.

Abstract: An electrophoretic display (EPD) and a driving method thereof. The electrophoretic display (EPD) includes: an upper substrate and a lower substrate arranged opposite to each other, and an electrophoretic medium disposed between the upper substrate and the lower substrate; the EPD is provided with a plurality of pixels; each pixel includes at least two sub-pixels; colored charged particles of different colors are disposed in different sub-pixels of each pixel; and a first wall electrode and a second wall electrode are respectively disposed on two opposite sides of each sub-pixel.

Abstract: Methods, systems, and computer program products for providing secure transactions for a device with limited functionality are disclosed. For example, a computer-implemented method may include presenting an encoded image identifying a form of payment on a display of a computing device in response to detecting a condition limiting a functionality of the device, maintaining the presentation of the encoded image on the display in response to the detected condition, and removing the presentation of the encoded image from the display in response to determining that the detected condition is no longer detected.

Abstract: A display device includes a cover plate, a display, a frame, a flexible circuit board and a water-proof glue. The display is disposed on the cover plate. The frame is disposed on a periphery area of the cover plate and surrounds the display to form a trench. The flexible circuit board includes a first portion and a second portion. The first portion is attached to the front surface of the active array substrate, and the second portion is fastened to the cover plate in the trench. The water-proof glue fills the trench.

Abstract: Various configurations of an electronic display, and devices incorporating the display, are provided. The display may have multiple portions connected along one or more axes, lines, points, or other connecting areas. The portions are movable about the connections. In various configurations, the display portions emulate different media and/or communication and computing devices. Two or more of the display devices may be coupled in an array.

Abstract: A reflective display device includes a display part including a fluid having dispersed therein particles having charges, an electric field applying unit including an electrode for applying an electric field to the display part, and a controller for controlling a color of light emitted from the display part, by adjusting at least one of an intensity, polarity, application time, number of applications, and application cycle of a voltage applied to the electric field applying unit, wherein the controller resets an alignment state of the particles by applying a driving voltage for controlling the color of light emitted from the display part, and then applying an alternating-current (AC) voltage having a polarity opposite to that of the driving voltage.

Abstract: A three-dimensional volumetric display includes a light source that generates a two-dimensional image output and a transparent scattering volume, coupled to the light source on a first face of the scattering volume, that scatters the image output of the light source in a direction perpendicular to the light axis of the output of the light source; where the scattering volume comprises a three-dimensional array of scattering elements arranged in a plurality of scattering planes tilted relative to the first face of the scattering volume.

Abstract: A three-dimensional volumetric display includes a light source that generates a two-dimensional image output and a transparent scattering volume, coupled to the light source on a first face of the scattering volume, that scatters the image output of the light source in a direction perpendicular to the light axis of the output of the light source; where the scattering volume comprises a three-dimensional array of printed-ink scattering elements arranged in a plurality of scattering planes tilted relative to the first face of the scattering volume.

Abstract: Various examples are provided for brightness compensation in a display. In one example, a method includes identifying an IR voltage drop effect on a pixel supplied by a supply voltage line and generating a brightness signal for the pixel based at least in part on the IR voltage drop effect. In another example, a method includes calculating values of IR voltage drop corresponding to pixels fed by a common supply voltage line and providing a data line signal to each pixel that compensates for the IR voltage drop. In another example, a display device includes a matrix of pixels and a brightness controller configured to determine an IR voltage drop effect on a pixel of the matrix and generate a brightness signal for the pixel based at least in part on the IR voltage drop effect and a temporal average pixel brightness within one refreshing cycle associated with the pixel.

Abstract: An electrophoretic light attenuator comprises a cell including a first substrate (90), a second substrate (90) spaced apart from the first substrate, a layer arranged between the substrates and containing an electrophoretic ink (30), and a monolayer of closely packed protrusions (2) projecting into the electrophoretic ink (30) and arranged adjacent a surface of the second substrate. The protrusions (2) have surfaces defining a plurality of depressions between adjacent protrusions. The ink (30) includes charged particles (11) of at least one type, the particles being responsive to an electric field applied to the cell to move between a first extreme light state, in which the particles (11) are maximally spread within the cell so as to lie in the path of light through the cell and thus strongly attenuate light transmitted from one substrate to the opposite substrate, and a second extreme light state, in which the particles (11) are maximally concentrated within the depressions so as to let light be transmitted.

Abstract: The technology disclosed here integrates a light sensor with a dual-mode display, thus increasing the size of the dual-mode display. The light sensor can be a camera, an ambient sensor, a proximity sensor, etc. The light sensor is placed beneath the dual-mode display and can detect incoming light while the dual-mode display is displaying a display image. The dual-mode display and the light sensor can operate at the same time. For example, a camera placed beneath the dual-mode display can record an image of the environment, while at the same time the dual-mode display is showing the display image. Further, multiple light sensors can be placed at various locations beneath the dual-mode display.

Abstract: This application describes techniques for erasing (e.g., smudging, rendering illegible, etc.) images that are presented on display mediums, such as electronic-paper displays. Electronic-paper displays include a layer of electronic ink comprising charged particles suspended in a fluid. When a voltage differential is created across the reading surface, the charged colored particles may rise to the reading surface, retreat to the opposite surface, or suspend somewhere there between, thereby creating a visible image. In some instances described herein, a common electrode is partitioned into at least two sets of elements interleaved with one another. To erase an image, a voltage differential may be driven between these two sets of elements, creating an in-plane electrical field that erases the image.

Abstract: An ionic conductance measuring instrument comprising a voltage/current test device and a test electrode, in which the test electrode comprises a bulk substrate with four linearly arranged through holes, four Pt wires inserted in the through holes respectively with their upper ends exposed outside of the bulk and their downside ends hidden inside of the bulk; the four axis of the Pt wire is in the same plane and parallel with each other; the gap distance between the mentioned Pt wire and the bulk substrate is 0.1-2 mm, and is filled with ionic conductive polymer.

Abstract: Provided are a triboelectric energy generator using a control of a dipole polarization direction and a method of fabricating the same. The present invention controls a direction of a charging property generated by friction through a control of a dipole polarization using a ferroelectric or piezoelectric property of a material, and by using this control, the present invention is related to a triboelectric energy generator in a disk type in which a frictional charging material is slidable on a thin film only using control of a dipole polarization without need of an additional patterning process and output power is improved.

Abstract: A display device includes a first support plate. A pixel region is formed on the first support plate and a reflective layer is positioned in the pixel region. The reflective layer includes a specular reflector and a diffuse reflector.

Abstract: A display device includes a first support plate and a second support plate opposite the first support plate. A plurality of pixel regions are positioned between the first support plate and the second support plate and arranged in a plurality of rows and a plurality of columns. A controller is configured to: determine that a measured operating condition value for a first performance property of the display device is outside an operating range for the first performance property; adjust a first value for a first device parameter to an adjusted first value based on the measured operating condition value; and adjust a second value for a second device parameter to an adjusted second value based on the measured operating condition value.

Abstract: In particular embodiments, a method includes receiving a signal from an electrode of a touch sensor that senses a charge displacement, based on the signal, in order to detect the contact or separation. The method further includes detecting a contact or separation input to the touch sensor.

Abstract: An active matrix electro-optic display (100) includes capacitor electrodes (110, 112) associated with the pixel electrodes (106, 108) so that the pixel electrode and its associated capacitor electrode form a capacitor. The display (100) also includes switching means (120) having one position in which each capacitor electrode (110, 112) is electrically connected to the light-transmissive front electrode (102) of the display (100) and a second position in which each capacitor electrode (110, 112) is electrically connected to a voltage source having a voltage independent of the voltage on the light-transmissive electrode.

Abstract: The present invention is directed to driving methods for driving a color display device which can display high quality color states. The display device utilizes an electrophoretic fluid which comprises three types of pigment particles having different optical characteristics.