Abstract: An electro-optic display and driving method are disclosed. The electro-optic display includes a layer of electrophoretic material disposed between a common electrode and a backplane. The backplane includes an array of pixel electrodes, each coupled to a pixel transistor. A controller provides time-dependent voltages to the gate line, the source line, and the common electrode of each pixel transistor. The driving method includes applying a first stage voltage to the gate line. The first stage voltage has a first magnitude that is substantially half of a gate low voltage for placing the pixel transistor in a non-conducting state. The first stage voltage is maintained on the gate line for a first period of time. Then, a second stage voltage is applied to the gate line, where the second stage voltage has a second magnitude that is substantially the gate low voltage for placing the pixel transistor in the non-conducting state.

Abstract: Electrophoretic displays with multi-particle electrophoretic media and improved methods for driving such multi-particle electrophoretic media, especially using active matrix backplanes and controllers. Larger look-up tables are used, which include a plurality of time-shifted waveforms for each color transition. The controller can thus easily cause a phase shift in the color flashes across the display, which ultimate diminishes or removes the perception that the device is “flashing” during an update from a first image to a second image. The methods are generalizable to any electrophoretic display using waveforms, and are particularly well-suited for newer multi-particle electrophoretic displays capable of producing four or more colors at each pixel.

Abstract: Methods are disclosed for driving an electrophoretic display having a plurality of display pixels arranged in a matrix comprising a two-dimensional array of rows and columns of display pixels. The methods include dividing the display pixels into groups made up of a plurality of clusters, where each cluster includes a number of adjacent display pixels. The method includes updating one group of display pixels during a first frame, where display pixels not in the one group are not updated during the first frame, and each cluster in the one group of display pixels is updated at the same time. The methods include applying an edge clearing waveform to no more than eight cardinal pixels of the adjacent display pixels of each cluster.

Abstract: A color electrophoretic display that includes sets of duplicative waveforms to reduce visible artifacts during image updates. Such methods include driving extra pixels where the boundary between a driven and undriven area would otherwise lead to artifact by providing paired sets of driving instructions, allowing the undriven area to be driven while maintain the desired (undriven) optical state.

Abstract: Improved electrophoretic media including a first particle of a first polarity and three particles of the opposite polarity, wherein the first particle and optionally one of the particles of the opposite polarity undergo a diminution of electrophoretic mobility with increased electric field. Such electrophoretic media enable full-color displays with very fast updates between white and black pixels.

Abstract: A method is described for driving an electro-optic display having a plurality of display pixels. The method includes updating the electro-optic display with a first image including image data from a first portion of a scrollable content. The method also includes receiving a user input comprising one or more parameters, and generating a second image based on at least one parameter of the user input. The second image includes: a subset of the image data from the first portion of the scrollable content, and image data from a second portion of the scrollable content. The method also includes updating the electro-optic display with the second image.

Abstract: A method for driving an electrophoretic display having a plurality of display pixels, the method comprising dividing the plurality of display pixels into a plurality of groups, updating one group of display pixels from the plurality of groups of display pixels, the one group of display pixels includes at least n number of adjacent display pixels being updated at the same time, wherein n is an integer greater than or equal to 2, and applying an edge clearing waveform to no more than (n×2)+2 number of cardinal pixels of the one group of display pixels.

Abstract: A color electrophoretic display that includes sets of duplicative waveforms to reduce visible artifacts during image updates. Such methods include driving extra pixels where the boundary between a driven and undriven area would otherwise lead to artifact by providing paired sets of driving instructions, allowing the undriven area to be driven while maintain the desired (undriven) optical state.

Abstract: A method is described for driving an electro-optic display having a plurality of display pixels. The method includes updating the electro-optic display with a first image including image data from a first portion of a scrollable content. The method also includes receiving a user input comprising one or more parameters, and generating a second image based on at least one parameter of the user input. The second image includes: a subset of the image data from the first portion of the scrollable content, and image data from a second portion of the scrollable content. The method also includes updating the electro-optic display with the second image.

Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes driving an electro-optic display having a plurality of display pixels and controlled by a display controller, the display controller associated with a host for providing operational instructions to the display controller, the method may include updating the display with a first image, updating the display with a second image subsequent to the first image, processing image data associated with the first image and the second image to identify display pixels with edge artifacts and generate image data associated with the identified pixels, storing the image data associated pixels with edge artifacts at a memory location, and initiating a waveform to clear the edge artifacts.

Abstract: A method of driving a multi-pixel electrophoretic display that is designed to enable at least three colors, e.g., eight, at each pixel. This method uses a first drive scheme capable of effecting transitions between all of the color states that can be displayed at each pixel; and a second drive scheme that contains only transitions ending at white or black, which is very useful for drawing black lines on a white page, reading black text on a white page, or reading white text on a black page. In order to control the amount of impulse potential accumulated at each pixel during the switch between drive modes, two intermediate transitional modes are added.

Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes driving an electro-optic display having a plurality of display pixels and controlled by a display controller, the display controller associated with a host for providing operational instructions to the display controller, the method may include updating the display with a first image, updating the display with a second image subsequent to the first image, processing image data associated with the first image and the second image to identify display pixels with edge artifacts and generate image data associated with the identified pixels, storing the image data associated pixels with edge artifacts at a memory location, and initiating a waveform to clear the edge artifacts.

Abstract: Improved electrophoretic media including a first particle of a first polarity and three particles of the opposite polarity, wherein the first particle and optionally one of the particles of the opposite polarity undergo a diminution of electrophoretic mobility with increased electric field. Such electrophoretic media enable full-color displays with very fast updates between white and black pixels.

Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes driving an electro-optic display having a plurality of display pixels and controlled by a display controller, the display controller associated with a host for providing operational instructions to the display controller, the method may include updating the display with a first image, updating the display with a second image subsequent to the first image, processing image data associated with the first image and the second image to identify display pixels with edge artifacts and generate image data associated with the identified pixels, storing the image data associated pixels with edge artifacts at a memory location, and initiating a waveform to clear the edge artifacts.

Abstract: Improved electrophoretic media including a first particle of a first polarity and three particles of the opposite polarity, wherein the first particle and optionally one of the particles of the opposite polarity undergo a diminution of electrophoretic mobility with increased electric field. Such electrophoretic media enable full-color displays with very fast updates between white and black pixels.

Abstract: A color electrophoretic display that includes sets of duplicative waveforms to reduce visible artifacts during image updates. Such methods include driving extra pixels where the boundary between a driven and undriven area would otherwise lead to artifact by providing paired sets of driving instructions, allowing the undriven area to be driven while maintain the desired (undriven) optical state.

Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes updating a display having a plurality of display pixels with a first image, identifying display pixels with edge artifacts after the first image update, and storing the identified display pixels information in a memory. In particular, the methods are effective for minimizing edge ghosting when a pixel of an active matrix electrophoretic display undergoes a white to white transition or a black to black transition during an update between first and second images.

Abstract: A method for driving electro-optic displays so as to reduce visible artifacts are described. Such methods include driving extra pixels where the boundary between a driven and undriven area would otherwise lead to artifact by providing paired sets of driving instructions, allowing the undriven area to be driven while maintain the desired (undriven) optical state.

Abstract: There are provided methods for driving an electro-optic display having a plurality of display pixels, a such method includes applying a first waveform chosen from a first set of waveforms for black-to-white and white-to-white transitions if a pixel is determined to display color, and applying a second waveform chosen from a second set of waveforms for black-to-white and white-to-white transitions if a pixel is determined to display a grayscale image.

Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes updating a display having a plurality of display pixels with a first image, identifying display pixels with edge artifacts after the first image update, and storing the identified display pixels information in a memory. In particular, the methods are effective for minimizing edge ghosting when a pixel of an active matrix electrophoretic display undergoes a white to white transition or a black to black transition during an update between first and second images.