Abstract: A liquid crystal layer sandwiched by a lower substrate 1 and an upper substrate comprises cross-shaped supports, a wall surface structure, and a seal member. The supports 15 are provided at the four sides of each pixel. Contiguous pixels are linked via openings between supports. The wall surface structure is provided in the periphery of the supports arranged in the form of a grid. The supports and the wall surface structure are a same member having adhesiveness. A portion of the wall surface structure is an inlet of liquid crystal. A seal member is provided at the perimeter of the wall surface structure 17. The liquid crystal poured from the inlet is poured into all of pixels via openings. A black matrix in the form of a grid, which covers the top side of all of the supports, is provided on the upper substrate.

Abstract: In a display element using cholesteric liquid crystal, to enable a high-speed partial screen rewrite, a region not to be partially rewritten is scanned in high-speed mode within the tolerance of crosstalk of the liquid crystal, and a region to be partially rewritten is partially rewritten by being scanned at a normal speed within a rewritable range with an inexpensive universal driver. As a result, a high-speed rewrite only to an arbitrary particular region can be made even with an inexpensive universal driver IC.

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 includes: an image data storage unit that stores image data; a display image data generation unit that synthesizes the image data with data of a noise pattern image with no correlation to the image data, and generates display image data; and a display unit that displays an image based on the display image data generated by the display image generation unit, and maintains a display without power supply.

Abstract: A reflection-type display apparatus includes: scan electrodes and signal electrodes that are provided in matrix form; a setting circuit configured to set at least one of scan electrodes as one of a reset line, a writing line and a non select line, the reset line and the writing line being in a selected state, the non select line being in an unselected state; a supply circuit configured to supply image data to at least one of signal electrodes while shifting the reset line, the non select line or the writing line; an extraction circuit configured to extract a writing line corresponding to a pixel which is not changed to a certain display state based on the image data; and a control circuit to set a first scan speed to the extracted writing line, the first scan speed being different from a second scan speed set to an un-extracted writing line.

Abstract: There is provided a reflective display device that includes an illuminance detector configured to detect illuminance, a chroma corrector configured to correct chroma of image data in accordance with the illuminance detected by the illuminance detector, and a display element configured to display image data corrected by the chroma corrector.

Abstract: There is provided a laminated type display device that includes a plurality of display elements. Each of the plurality of the display elements is configured to reflect respective colors and each of the respective colors is different from each other. Each of the plurality of the display elements includes respective transparent electrodes of which spectral characteristics are different each other.

Abstract: A liquid-crystal driving method includes: setting a reset line, a writing line, and a non-select line in a direction parallel to a plurality of common electrodes, the plurality of the common electrodes and a plurality of segment electrodes being arranged in a matrix form; dividing a driving period into a reset period and a write period; applying a first voltage during the reset period spanning n lines before writing data into the writing line by one of the plurality segment electrodes during the write period, where n is a positive integer; applying a second voltage during the reset period spanning m lines and the write period, where m is a positive integer; and driving a liquid-crystal pixel provided at each intersection of the common electrodes and the segment electrodes.

Abstract: In order to realize a display with a multilevel halftone that is excellent in uniformity by using a liquid crystal display element employing an inexpensive and general purpose driver having a low voltage endurance, a pulse application employing a cumulative response (overwriting) of liquid crystals is performed a plurality of times, the driving voltage and the pulse width are set to be variable for each step, and the liquid crystals are controlled to be in a prescribed halftone state by using a region having a large margin from a reflection state as the initial state. Since an increase in drive voltage is prevented, an inexpensive binary output general purpose driver having a low voltage endurance can be used. Furthermore, a display with a multilevel halftone that is excellent in uniformity is realized because of a gray level conversion that uses a region having a large margin.

Abstract: The liquid crystal display includes a first display unit, a second display unit, a light absorbing layer disposed on a bottom surface of the first display unit so as to absorb light which has entered the first display unit through a top surface thereof and which has been transmitted by the first liquid crystal, and a control circuit section for effecting a switch between a two-surface display mode in which the second display unit is lapped over the first display unit so as to face the bottom surface thereof with the light absorbing layer interposed between them to display images independent of each other on the first display unit and the second display unit and a high image quality mode in which the second display unit is lapped over the first display unit so as to face the top surface thereof to display the same image on the first and second display units.

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: The invention has an object to provide a liquid crystal composite capable of sufficiently reducing the scattering of light in a focal conic state, a liquid crystal display element excellent in improvements of a color balance and a contrast, and electronic paper using the same. The content of a chiral material is higher in a cholesteric liquid crystal LCg for G than in a cholesteric liquid crystal LCb for B, and is higher in a cholesteric liquid crystal LCr for R than in the cholesteric liquid crystal LCg for G. The cholesteric liquid crystal LCr for R is prepared by mixing about 5 wt % of a chiral material CHl1 of an L-form with a base liquid crystal of an R-form, which contains 27 wt % of CHr1 of the R-form exhibiting a liquid crystallizability for a nematic liquid crystal LCn, and 3 wt % of a chiral material CHr2 of the R-form exhibiting no crystallizability.

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 display device includes a matrix-type display element, a drive circuit, a control circuit, and a temperature sensor, the control circuit controls the drive circuit so that an initialization pulse to initialize a pixel to be rewritten is applied to bring about an initial gradation state and then a gradation pulse is applied to the initialized pixel to bring about a gradation state, the cumulative time during which the gradation pulse is applied is related to the value of the gradation state, the control circuit fixes the pulse voltage of the initialization pulse and varies the pulse width of the initialization pulse in accordance with the temperature detected by the temperature sensor, and varies the pulse width of the gradation pulse when the temperature is low and varies the pulse voltage of the gradation pulse when the temperature detected is high.

Abstract: A display device includes a display element of a dot matrix-type having a display material with memory properties, a drive circuit that drives a pixel of the display element and a control circuit that controls the drive circuit, the control circuit includes an initialization step for applying a voltage pulse to initialize a pixel to be rewritten to bring about an initial gradation state and a gradation step for applying a voltage pulse to change the gradation state of a pixel, and the gradation step includes a plurality of sub-steps having a plurality of execution times and in the plurality of sub-steps, an alternating-current voltage pulse is formed in a pixel to be rewritten and the period of the alternating-current voltage pulse is varied in accordance to a gradation to be written within the range of the sub-step.

Abstract: A segment block 61, which is formed into a shape like the numeral eight (“8”) constituted by seven segments 63, is connected to the adjacent segment block 61 by way of liquid crystal injection paths 62, each of which has a key-type S-shaped structure. Within the segment block 61, two pairs of segments 63 each consisting of one left and one right segment and which are located on the opposing upper and lower sides, are mutually connected by way of liquid crystal injection paths 64, each of which has a key-type S-shaped structure, and three segments 63 located at the upper, middle and lower parts are respectively connected to the liquid crystal injection paths 64 by way of linearly structured liquid crystal injection paths 65 that are vertically branched respectively from the liquid crystal injection paths 64.

Abstract: A high-contrast reflective liquid crystal display device of a lamination type in which scattering in the focal conic state of cholesteric liquid crystal has been reduced is described. The reflective liquid crystal display device has two or more laminated liquid crystal panels respectively having a liquid crystal layer of the cholesteric liquid crystal having different selective reflection wavelengths and the liquid crystal panel having a liquid crystal layer into which the liquid crystal having a longer selective reflection wavelength has been implanted has a smaller orientation regulating force of the liquid crystal layer applied to the panel.

Abstract: The invention provides a display device and a method of driving the same in which degradation of display quality attributable to image sticking can be prevented while maintaining a memorized state of display. The display device includes a display section displaying a memorized display image which is kept displayed without electric power, a correction data generating section generating correction data for correcting a display characteristic of the display section which has changed due to sticking of the memorized display image, a corrected image data generating section generating corrected image data by correcting image data of a next image to be displayed next on the display section using the correction data, and a control section causing the display section to display the next image according to the corrected image data.

Abstract: A liquid crystal display device in which three cholesteric liquid crystal layers of selective reflection type are laminated, comprises: a first liquid crystal layer arranged on a device observation side selectively reflecting blue; a second liquid crystal layer arranged next to the first liquid crystal layer selectively reflecting green; a third liquid crystal layer arranged next to the second liquid crystal layer selectively reflecting red; and a green cut filter layer arranged between the green liquid crystal layer and the red liquid crystal layer selectively absorbing a light ray of a wavelength of 600 nm or less.

Abstract: The display apparatus includes a dot matrix type display device including a display material; a driver circuit that passively drives a plurality of pixels in the display device; and a control circuit that controls the driver circuit. The control circuit applies a voltage pulse to initialize a plurality of pixels to be rewritten and applies a voltage pulse to change a tone state of the plurality of pixels and display the tone. The voltage pulse to be applied for the tone display includes an all-selected voltage pulse to be applied to a plurality of pixels the tone state of which are changed, and a half-selected voltage pulse and a non-selected voltage pulse to be applied to a plurality of pixels the tone state of which are not changed, and a ratio of the all-selected voltage to the half-selected voltage is larger than 21/2 and smaller than 2.