Abstract: A display element comprises: a pair of substrates disposed opposite to each other; a liquid crystal enclosed between the pair of substrates; a wall structure which is formed to surround a pixel region and which is in contact with both of the pair of substrates; and an opening section which is an opening provided in a part of the wall structure to allow the liquid crustal to flow out of the pixel region.

Abstract: A liquid crystal display device includes a segment driver, a common driver, and a voltage setting unit. The voltage setting unit derives a voltage at which a previous drive line becomes a focal conic state regardless of image data by applying a synthesized voltage of a voltage that is applied from the segment driver and a voltage that is applied from the common driver to the previous drive line. Then, the voltage setting unit sets the voltages that are applied from the segment driver and the common driver on the basis of the derived result.

Abstract: A display apparatus includes a display device that has a memory property to maintain its display state even after a drive applied to the display device is removed; a detection circuit configured to detect a capacitance exhibited by the display device; an adjustment circuit configured to make an adjustment of a driving condition for the display device, based on the capacitance of the display device detected by the detection circuit when the display device is in a display state that is set by driving the display device under a predetermined driving condition; and a storing circuit configured to store a capacitance of the display device and a driving condition for the display device that are used in a previous adjustment, wherein the adjustment circuit changes an adjustment sequence in accordance with a difference between the capacitance detected by the detection circuit, and the capacitance stored in the storing circuit.

Abstract: A display apparatus includes a cholesteric liquid crystal display panel, a control circuit and a driving circuit. The control circuit classifies pixels into different gradation level groups. The driving circuit applies a first driving waveform to the cholesteric liquid crystal display panel to bring pixels belonging to the first and the fourth group into a state corresponding to the highest gradation level, pixels belonging to the second group into a state corresponding to the lowest gradation level, and pixels belonging to the third group into states corresponding to gradation levels to be displayed, and applies a second driving waveform to the cholesteric liquid crystal display panel to bring pixels belonging to the fourth group into states corresponding to gradation levels to be displayed.

Abstract: A display device includes: a matrix-type display element; a row driver that drives a scan electrode of the display element; and a column driver that drives a data electrode of the display element, in which the column driver includes a matrix driver in a segment mode, the row driver includes a matrix driver being switched between the segment mode and a common mode, and the writing of image data to the display element is performed by: invalidating the output of the row driver and the column driver; setting the row driver to the segment mode; and validating the output of the row driver and the column driver after writing selected line specification data to the row driver and writing image data to the column driver, and then setting the row driver to the common driver.

Abstract: A method of driving a liquid crystal display element that applies an AC pulse voltage to drive liquid crystal includes: when the temperature of the liquid crystal is higher than a reference temperature, generating the AC pulse voltage for high temperature having a pulse width that is shorter than a reference pulse width of a reference AC pulse voltage used at the reference temperature; and applying the generated AC pulse voltage to the liquid crystal in a period that is equal to the reference pulse width.

Abstract: The present invention provides a display element capable of allowing a user to recognize the content of an image in a short time during screen rewriting, a method of driving the same, and an electronic paper including the same. At the time of image display, B and R pixels 12b(i, 1) to 12b(i, 320) and 12r(i, 1) to 12r(i, 320) in i-th rows of B and R display units 6b and 6r and G pixels 12g(241?i, 1) to 12g(241?i, 320) in a (241?i)-th row of a G display unit 6g are driven substantially at the same time.

Abstract: A display device has a display panel having a first substrate in which a plurality of first electrodes are disposed in parallel, a second substrate in which a plurality of second electrodes crossing the first electrodes are disposed in parallel, and a material layer which is disposed between the first and second substrates and reflects, transmits or absorbs light with a predetermined wavelength according to a write state; first and second drive circuits which drive the first and second electrodes respectively; and a drive control circuit which performs drive control for the first and second drive circuits. When refreshing a display image, the first or second drive circuit, while applying a reset pulse to a plurality of adjacent electrode group of first or second electrodes, scans the electrode group so as to reset the pixels, and the drive control circuit controls to change the direction of scanning.

Abstract: A display device includes a liquid crystal display panel having a first and second substrates with scanning electrodes and data electrodes and a liquid crystal layer; a scanning electrode driving circuit applying to the scanning electrodes scan pulse; a data electrode driving circuit applying to the data electrodes data pulses having combinations of different voltage levels according to write data; and a driving control circuit supplying to the scanning and data electrode driving circuits a pulse control signal controlling the phase of the scan pulses and data pulses. The scanning and data electrode driving circuits control the scan pulses and data pulses at voltage levels according to the pulse control signal, and the driving control circuit inverts or does not invert the phase of the pulse control signal, at each application interval of the scan pulses, according to the number of changed values and unchanged values of the write data.

Abstract: A LCD device, in which a multi-grayscale level state is produced in a liquid crystal layer by applying a different voltage thereto, includes a liquid crystal display panel having the liquid crystal layer between first and second electrodes, an electrode drive circuit applying drive voltage pulses generated from multi-voltage power sources to the first and the second electrodes, and a multi-voltage power generator circuit. The LCD device further includes a multi-voltage power switch circuit supplying the first or the second multi-voltage power sources from the first or the second multi-voltage power units to the electrode drive circuit, and a control circuit, in a first drive step, setting the first multi-voltage power unit to an active state, and, in a second drive step, setting the second multi-voltage power unit to the active state.

Abstract: A liquid crystal display device includes a first liquid crystal layer where first liquid crystal regions and second liquid crystal regions are alternately arranged, and a second liquid crystal layer stacked on the first liquid crystal layer where third liquid crystal regions and fourth liquid crystal regions are alternately arranged. With respect to an area per pixel, the first liquid crystal region is larger than the second liquid crystal region, and the third liquid crystal region is larger than the fourth liquid crystal region. The first liquid crystal region overlaps part of the third liquid crystal region and the fourth liquid crystal region. The first, the second, the third and the fourth liquid crystal regions cause changes in reflectance of light at respective wavelength regions in response to applied voltage. The respective wavelength regions are different from one another.

Abstract: A liquid crystal display element includes a first and a second liquid crystal layer stacked on each other. The first liquid crystal layer includes a first liquid crystal strip group and a second liquid crystal strip group extending in a first direction and alternately aligned. A first electrode group and a second electrode group are disposed so as to hold the first liquid crystal strip group and the second liquid crystal strip group therebetween. The second liquid crystal layer includes a third liquid crystal strip group and a fourth liquid crystal strip group extending in a second direction orthogonal to the first direction and alternately aligned. A third electrode group and a fourth electrode group are disposed so as to hold the third liquid crystal strip group and the fourth liquid crystal strip group therebetween. Each electrode group includes electrodes extending in the each direction substantially parallel to each other.

Abstract: A display apparatus comprising: a display device comprising a cholesteric liquid crystal layer and electrodes sandwiching the cholesteric liquid crystal layer and applying a voltage to a pixel; a voltage driver capable of applying a first pulse and a second pulse to the electrodes, the first and second pulses having different polarities; and a directing circuit directing the voltage driver as to a position to which the first pulse is to be applied and a position to which the second pulse is to be applied in a predetermined period according to a gray level to be produced in the pixel.

Abstract: A method of driving a liquid crystal display element includes a first step for initializing a liquid crystal in a pixel and displaying an initial grayscale at the pixel and a second step for displaying a desired grayscale lower than the initial grayscale by making a cumulative time difference between low grayscales lower than a reference grayscale longer than a cumulative time difference between high grayscales higher than the reference grayscale, where the cumulative time differences are a difference between a cumulative voltage application time of voltage pulses cumulatively applied to display a grayscale lower than the initial grayscale and a cumulative voltage application time of the voltage pulses cumulatively applied to display a grayscale one level lower than the grayscale lower than the initial grayscale.

Abstract: A reflective color display element includes a plurality of pixels arranged in a matrix. Each of the plurality of pixels includes a first hue element, a second hue element, and a third hue element that control a light reflection state and that exhibit three different hues. Reflection spectra of the first hue element, the second hue element, and the third hue element partially overlap.

Abstract: A cholesteric liquid-crystal display device includes a cholesteric liquid-crystal display element having common electrodes and segment electrodes; a common driver which drives the common electrodes, outputs a selected-line voltage to a selected line of the common electrodes, and outputs an unselected-line voltage to unselected lines other than the selected line; a segment driver which drives the segment electrodes and outputs a write signal to the segment electrodes; a drive controlling circuit which controls the common driver and the segment driver to rewrite an image displayed on the cholesteric liquid-crystal display element; and a voltage correcting circuit which corrects the unselected-line voltage corresponding to the write signal during writing to the selected line.

Abstract: A display device includes a display element that maintains its display state even when no longer driven; a capacitance detecting circuit that detects a capacitance of the display element; and a driving condition adjusting circuit that drives the display element under predetermined driving conditions to set the display element to the display state, and that adjusts driving conditions for the display element on the basis of the capacitance of the display element exhibiting the display state detected by the capacitance detecting circuit.

Abstract: A display device includes a display part, an electrode that applies a pulse to a pixel of the display part, and a control part that controls the application of the pulse, the control part controls the position of the electrode that applies the pulse so as to change at irregular intervals. The control part selects the position of the electrode that applies the pulse alternately from the center toward both ends and densely at the center and sparsely at both ends, or alternately from both ends toward the center and densely at both ends and sparsely at the center and thus selects all the electrodes.

Abstract: The invention relates to a display element, an element drive method, and an information display system having the element, and has an object to provide a display element capable of stably acting even if a received electric power reduces, a method for driving the element, and an information display system having the element. The system comprises: a display section having laminated display layers; a wireless transmitting/receiving section for receiving electric waves containing the display data of the display layers; a driving voltage generating circuit for generating drive voltages to drive the display layers from the electric waves received; and a control section for simultaneously driving the display layers of the number which is determined on the basis of the receiving situations of the electric waves.

Abstract: A display device includes: a data storage unit that stores image data; a display image data generation unit that generates display image data by adding a noise pattern, of which a polarity is in accordance with a gray level value of each pixel of the image data, to the image data; and a display unit that displays an image based on the display image data generated by the display image generation unit.