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| 20090146991 | DRIVING METHOD OF ELECTROPHORESIS DISPLAY DEVICE - A driving method of an electrophoretic display device composed of a pair of substrates with electrophoretic elements, each containing electrophoretic particles, interposed therebetween, first electrodes provided on one substrate of the pair of substrates so as to correspond to pixels, and a second electrode which is provided on the other substrate and is shared by all of the pixels, in which each pixel includes a pixel switching element connected to a scan line and a data line, a memory circuit connected to the pixel switching element, and a switch circuit disposed between the memory circuit and the first electrode, and the switch circuit is connected to a first control line and a second control line, the driving method includes: inputting an image signal to the memory circuit via the pixel switching element; causing the first control line and the second control line to be connected to the first electrode by driving the switch circuit in response to an output from the memory circuit; causing a potential of the second electrode to alternate between a first potential and a second potential in a state in which a potential of the first control line is set to the first potential and a potential of the second control line is set to the second potential; and setting the potential of the first control line to a third potential which is higher than the first potential in an image display step which is performed after the inputting an image signal. | 06-11-2009 |
| 20090189848 | METHOD OF DRIVING ELECTROPHORETIC DISPLAY DEVICE, ELECTROPHOTETIC DISPLAY DEVICE, AND ELECTRONIC APPARATUS - There is provided a method of driving an electrophoretic display device including electrophoretic elements including electrophoretic particles that is arranged between one pair of substrates, a display unit formed of a plurality of pixels each including a pixel electrode, a pixel switching element, a memory circuit that is connected between the pixel electrode and the pixel switching element, and a switching circuit that is connected between the pixel electrode and the memory circuit, and first and second control lines that are connected to the switching circuit. The method includes extracting a length of the boundary between pixel data of a first gray scale level and pixel data of a second gray scale level from image data transmitted to the display unit as a characteristic amount, determining whether an operation mode of an image displaying operation is to be switched based on the characteristic amount, and switching the operation mode based on the result of the determination acquired in the determining on whether an operation mode is to be switched. | 07-30-2009 |
| 20090189884 | DRIVING METHOD OF ELECTROPHORETIC DISPLAY DEVICE, ELECTROPHORETIC DISPLAY DEVICE, AND ELECTRONIC APPARATUS - An electrophoretic display device has a display unit including a plurality of pixels in which electrophoretic elements including electrophoretic particles are interposed between a pair of substrates, each pixel including a pixel electrode, a pixel switching element, a memory circuit connected between the pixel electrode and the pixel switching element, and a switch circuit connected between the pixel electrode and the memory circuit, and first and second control lines connected to the switch circuits. When a ratio of first-gray-scale pixel data in image data displayed on the display unit is 50% or more of the image data, an image display action is performed which includes: an image signal input period in which the pixel data is input as an image signal to the memory circuit of each pixel; a first image display period in which all the pixels are set to a first gray scale by inputting control signals having the same potential to the first and second control lines; and a second image display period in which a second-gray-scale image is displayed by inputting a potential to one control line of the first and second control lines connected to the pixel electrode of the pixel to which the image signal corresponding to a second gray scale other than the first gray scale is input and electrically disconnecting the other control line. | 07-30-2009 |
| 20090303228 | ELECTROPHORETIC DISPLAY DEVICE, ELECTRONIC APPARATUS, AND METHOD OF DRIVING ELECTROPHORETIC DISPLAY DEVICE - An electrophoretic display device includes a first substrate and a second substrate, an electrophoretic element which is placed between the first and second substrates and contains electrophoretic particles, a plurality of first pixel electrodes formed on an electrophoretic element side of the first substrate, second pixel electrodes provided on the electrophoretic element side of the first substrate in an electrically floating state, and a common electrode provided on an electrophoretic display side of the second substrate so as to face the first and second pixel electrodes, in which a region where the second pixel electrodes are placed includes part of a space between the adjacent first pixel electrodes. | 12-10-2009 |
| 20100001946 | ELECTROPHORETIC DISPLAY DEVICE AND ELECTRONIC APPARATUS - An electrophoretic display device includes a first substrate and a second substrate that face each other, an electrophoretic element disposed between the first substrate and the second substrate, the electrophoretic element including electrophoretic particles, a display unit that has a plurality of pixels including the electrophoretic element, a common electrode that is formed on an electrophoretic element side of the second substrate, and a first control line and a second control line that are formed in either the first substrate or the second substrate. Each of the plurality of pixels includes a pixel switching element, a memory circuit that is connected to the pixel switching element, a switching circuit that is connected to the memory circuit, and a first pixel electrode and a second pixel electrode that are connected to the switching circuit and are disposed to face the common electrode. The switching circuit includes a first switch that controls a conductive state between the first control line and the first pixel electrode in accordance with an output signal of the memory circuit and a second switch that controls a conductive state between the second control line and the second pixel electrode in accordance with the output signal of the memory circuit. | 01-07-2010 |
| 20110102481 | DRIVING METHOD FOR ELECTROPHORETIC DISPLAY DEVICE, ELECTROPHORETIC DISPLAY DEVICE, AND ELECTRONIC APPARATUS - Disclosed is a method for driving an electrophoretic display device including a display unit having an electrophoretic element interposed between a pair of substrates, a pixel, a pixel electrode provided for each pixel and an opposite electrode facing the pixel electrode via the electrophoretic element. A step of performing an intermediate grayscale display of the pixel includes a first display step of changing the grayscale of the pixel to a first grayscale, a discharge step of removing charges of the pixel electrode and the opposite electrode, and a second display step of changing the grayscale of the pixel to an intermediate grayscale by inputting a potential for changing the grayscale of the pixel to a second grayscale to the pixel electrode and the opposite electrode. | 05-05-2011 |
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| 20090200725 | Sheet creaser, sheet conveyer, sheet finisher, image forming apparatus, and sheet creasing method - A pressing unit includes a pressure roller that slides on the folded side while rotating, an elastic biasing unit that presses the pressure roller in a thickness direction of the stack of sheets, and a driving unit that slides the pressure roller in a direction substantially perpendicular to a conveying direction of the stack of sheets. A lifting unit, when the pressure roller slides to a first position, temporarily lifts up the pressure roller, and when lifted-up pressure roller slides to a second position, lifts the lifted-up pressure roller down onto the folded side. | 08-13-2009 |
| 20090206547 | Sheet conveying device, sheet punching device, sheet processing device, image forming apparatus, and method for determining mounting state of measuring unit - A sheet conveying device includes a conveying unit that conveys a sheet in a sheet conveying direction; a measuring unit that measures a position of a side edge of the sheet in a measurement area; a shielding unit having an end portion that is projected into the measurement area for shielding the sheet; a first determining unit that determines whether the shielding unit is detectable in the measurement area; and a second determining unit that determines whether the measuring unit has been mounted in the sheet conveying device based on a result obtained in the first determining unit. | 08-20-2009 |
| 20090258774 | Sheet creaser, sheet finisher, image forming apparatus, sheet folding method, and computer program product - In a sheet creaser, a sheet set is pushed between a pair of folding rollers to fold the sheet set. Then, a re-pressing roller re-presses the sheet set, which has been folded by the folding rollers, by rolling along the crease. Pressure applied on the sheet set by the folding rollers is released when the re-pressing roller re-presses the sheet set. | 10-15-2009 |
| 20090283961 | Sheet Stacking device, Drive control method, and computer program product - A sheet stacking unit that stacks sheets thereon is movable up and down. A lifting unit moves the sheet stacking unit up and down. A driving unit drives the lifting unit. A control unit controls a driving speed of the driving unit. A position detecting unit detects a position of the sheet stacking unit in an up-and-down direction. The control unit controls the driving speed according to the position of the sheet stacking unit detected by the position detecting unit. | 11-19-2009 |
| 20100148417 | Sheet aligning apparatus, sheet processing apparatus, and image forming apparatus - A sheet aligning apparatus includes an alignment surface formed in a planar shape and that presses an end of a sheet to move and align the sheet; and a holding unit that holds the end of the sheet at a position contacting the alignment surface in a state that a curled end of the sheet contacts the alignment surface and the sheet is thus pressed. | 06-17-2010 |
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| 20080238865 | Electrophoretic display device, method for driving electrophoretic display device, and electronic apparatus - An electrophoretic display device includes a plurality of pixels which are connected to scanning lines, data lines, a first control line, and a second control line, and which have first electrodes, a second electrode facing the first electrodes, electrophoretic elements which are sandwiched between the first electrodes and the second electrode and which have charged electrophoretic particles, pixel switching elements connected to the scanning lines and the data lines, memory circuits which are connected to the pixel switching elements, which store therein pieces of 1-bit data supplied through the data lines and the pixel switching elements, and which output signals representing the pieces of 1-bit data, and switch circuits which are arranged between the memory circuits and the first electrodes and which electrically connect the first control line or the second control line to the first electrodes. The electrophoretic display device further includes a signal supply unit which supplies first driving signals determining tones of, among the plurality of pixels, pixels having the first electrodes connected to the first control line to the first control line, and which supplies second driving signals determining tones of, among the plurality of pixels, pixels having the first electrodes connected to the second control line to the second control line. | 10-02-2008 |
| 20080238867 | Electrophoretic display device, method of driving electrophoretic device, and electronic apparatus - An electrophoretic display device includes a pair of substrates, an electrophoretic element that includes electrophoretic particles and that are held between the pair of substrates, and a display portion formed of a plurality of pixels. The display portion includes pixel electrodes, an opposite electrode, a first control line and a second control line. Each of the pixel electrodes is formed in each of the pixels. The opposite electrode is opposed to the plurality of pixel electrodes through the electrophoretic element. The first control line and the second control line are connected to each of the pixels. Each of the pixels includes a pixel switching element, a memory circuit, and a switch circuit. The memory circuit is connected to the pixel switching element. Switching of the switch circuit is performed by an output signal of the memory circuit to switch between a connected state where the pixel electrode is connected to the first control line and a connected state where the pixel electrode is connected to the second control line. | 10-02-2008 |
| 20080239461 | Electrophoresis display device and electronic apparatus - The invention provides an electrophoresis display device having a plurality of pixels that is arrayed in a two-dimensional pattern. The electrophoresis display device according to an aspect of the invention includes: a first electrode that is formed in each of the pixels; a second electrode that is formed opposite to the first electrode; an electrophoresis element that is sandwiched between the first electrode and the second electrode and has electrophoresis particles that are charged electrically; and an insulation layer that is formed at a region between each two of the first electrodes that are arrayed adjacent to each other. | 10-02-2008 |
