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6268839 |
Drive schemes for gray scale bistable cholesteric reflective displays
A series of drive schemes are used to apply a single phase of at least one voltage pulse to drive a display with a bistable cholesteric liquid crystal material to a gray scale reflectance. Each...
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6256010 |
Dynamic correction of LCD gamma curve
A method and means for correcting the γ - curve of an LCD by calculating an inverse γ - curve from the γ - curve of the LCD measured by the manufacturer and producing a straight line V-T plot...
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6252580 |
Mapping highlight colors to black-and-white textures
A method for mapping highlight colors to monochromatic textures is provided. It includes reading an input highlight color having a highlight color amount and a base color amount. The highlight...
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6249265 |
Intraframe time-division multiplexing type display device and a method of displaying gray-scales in an intraframe time-division multiplexing type display device
An intraframe time-division multiplexing type display device prevents prominent image defects, such as flicker, and affords a high-quality image display. A single frame of an image is displayed...
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6243072 |
Method or apparatus for displaying greyscale or color images from binary images
An apparatus and method for improving image quality and in particular to an apparatus and method for converting binary images to grey-scale or color images and displaying those images. The...
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6239781 |
Gray-scale signal generating circuit and liquid crystal display
A gray-scale generating circuit having a waveform that represents the gray level of a picture element over a certain number of frames of an image, the picture element being scanned during a certain...
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6232948 |
Liquid crystal display driving circuit with low power consumption and precise voltage output
A driving circuit for a liquid crystal display in an active matrix scheme is provided. The driving circuit comprises a multi-value voltage generating circuit, a selection circuit and an output...
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6232942 |
Liquid crystal display device
An antiferroelectric liquid crystal display device provided with means for preventing optical transmittance or the mean value of the optical transmittance from changing in a holding period tk....
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6232943 |
Liquid crystal display
Given a natural number "n", then, in the first frame of continuous two frames, strobe pulses of opposite polarities are applied respectively to a scanning electrode L 2n -1 in a (2n-1)'th line and...
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6229515 |
Liquid crystal display device and driving method therefor
A liquid crystal display device includes a pair of substrates, on at least one of which pixels or scanning lines and switching elements for selecting desired pixels or scanning lines are arranged,...
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6225967 |
Matrix-driven display apparatus and a method for driving the same
Disclosed herein are a liquid-crystal display capable of reducing the required number of source drivers expensive and having large power consumption, which are used in the display, and providing a...
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6222515 |
Apparatus for controlling data voltage of liquid crystal display unit to achieve multiple gray-scale
In a driving device of an active matrix type liquid crystal display unit including a liquid crystal display panel, a scan driver, and a data driver, a data voltage controlling apparatus is provided...
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6222510 |
Display unit
In a display unit, light emitting pixels are arrayed in a matrix form, an image signal having a half tone can be displayed, and the number of gray scale in a gray image can be increased without an...
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6219016 |
Liquid crystal display supply voltage control circuits and methods
Liquid crystal displays include power supply control circuits and methods that are responsive to a single DC input supply voltage, to generate operating voltages for the gate driver, the data...
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6215466 |
Method of driving an electro-optical device
For a gradation displaying operation for an electro-optical device, a gradation display system which can be controlled by a digital signal and is hard to be affected by variation in characteristics...
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6211851 |
Method and apparatus for eliminating crosstalk in active matrix liquid crystal displays
The elimination of crosstalk between data lines and pixel cells in a thin film transistor/liquid crystal display is accomplished by applying a precharge voltage level for a given data signal level...
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6198469 |
"Frame-rate modulation method and apparatus to generate flexible grayscale shading for super twisted nematic displays using stored brightness-level waveforms"
A apparatus to generate gray scale shading data in response to input color data that is cost efficient and programmable is presented. The present invention allows up to 16 brightness-levels to be...
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6188382 |
Image display apparatus with improved image portion
An image display apparatus including a liquid crystal display panel (LCD) constituting an image display plane composed of a plurality of pixels arranged with a pixel pitch, a LCD driver circuit...
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6188379 |
Color display system and method of driving the same
A field-sequential type color display system comprises a light source unit composed of a plurality of color light sources which emit light rays of different wavelengths, respectively, and which can...
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6184854 |
Weighted frame rate control with dynamically variable driver bias voltage for producing high quality grayscale shading on matrix displays
A system for improving the grayshading of matrix displays that effect grayshading by frame rate control (i.e., temporal dithering) includes a computer program which dynamically controls the bias...
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6181309 |
Color liquid crystal display device
A reflective type STN color liquid crystal display device having polarizers a liquid crystal layer a birefringent plate, an absorbing axis of upper polarizer, an absorbing axis of lower polarizer....
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6177967 |
Voltage tuning of LCD polarization state by varying drive voltage to compensate for optical misalignment
A method of modifying the polarization state of light exiting a Liquid Crystal Display that is effected without altering the optical image of the display comprises reducing the select voltage to...
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6175355 |
Dispersion-based technique for modulating pixels of a digital display panel
A technique for modulating pixels of a display panel for forming an image. Each pixel has an associated pixel frame, which is a period of time during which the pixel is modulated to achieve an...
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6172661 |
Low power driving method for reducing non-display area of TFT-LCD
A liquid crystal display device includes a liquid crystal display panel in which pixels are arranged in rows and columns. Each of the pixels includes a pixel electrode, and a thin-film transistor...
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6160533 |
Method and apparatus for driving display panel
A reference voltage having a plurality of voltage levels which increase stepwise over time is supplied to source lines on a display panel through a plurality of analog switches. A value...
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6160594 |
Liquid crystal device having drive duty ratios of all display portions in the power-saving operation mode lower than those in the normal operation mode
A structure of a liquid crystal device cutting down the power consumption is materialized. In a liquid crystal display device comprising at least two display portions of a dot matrix portion and an...
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6154189 |
Liquid crystal display panel drive method, segment driver, display controller and liquid crystal display device
An object of the present invention is to realize the gray shading through PWM in the MLS drive method while minimizing increase of the number of voltage levels and degradation of the display...
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6151005 |
Liquid-crystal display system having a driver circuit capable of multi-color display
A liquid-crystal display system comprising a voltage divider circuit, and a gate circuit. The voltage divider circuit divides n voltages of n different voltage levels supplied from a power source...
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6151006 |
Active matrix type display device and a method for driving the same
An active matrix type display device according to the present invention includes: a display panel including a plurality of pixels arranged in a matrix shape, scanning lines connected to the...
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6144373 |
Picture display device and method of driving picture display device
A method of driving a picture display device having an N number (N is an integer of not less than 2) of scanning electrodes and a plurality of data electrodes and being capable of optically...
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6144374 |
Apparatus for driving a flat panel display
The present invention is to provide an apparatus for driving a flat panel display which allows the amount of electrons emitted from a cell to be easily controlled and which performs a stable...
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6140989 |
Image signal control circuit which controls image signal for displaying image on multi-gradation liquid crystal display and control method therefor
An image signal control circuit including a digital-to-analog conversion circuit with a first reference voltage terminal to be supplied with a predetermined voltage value, and second and third...
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6133894 |
Driving method for optical apparatus
An optical apparatus includes an optical modulation means having a pair of electrodes, and a photoconductor layer and an optical modulation substance layer disposed between the electrodes, a signal...
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6127991 |
Method of driving flat panel display apparatus for multi-gradation display
There is proposed is a method of controlling a flat panel display apparatus for multi-gradation display in which a data determination portion and a subfield control portion are provided. Based on a...
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6121952 |
Gray scale display control device
A gray scale display control device by which flickers occurring in a gray scale display are reduced. This gray scale display control device is provided with: a blink data storing unit for storing...
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6118421 |
Method and circuit for driving liquid crystal panel
A method for driving a liquid crystal panel including a plurality of pixel electrodes arranged in a matrix, a plurality of data lines respectively connected to the pixel electrodes in a plurality...
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6108056 |
Active matrix electro-optical device
In an active matrix display device integrated with a peripheral drive circuit using thin film transistors, when Vgr is a voltage required for one gradation, Ct is capacitance of all pixels, Cgd is...
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6104365 |
Light modulating devices
A ferroelectric liquid crystal display comprises an addressable matrix of pixels 7 and addressing circuitry comprising a data signal generator 14 for applying data signals to column electrode...
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6104366 |
Driving device for liquid crystal display with a high yield
A driving device is for driving a liquid crystal display in accordance with a display data signal. A shift register circuit produces first through N-th control signals from first through N-th shift...
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6100863 |
Motion pixel distortion reduction for digital display devices using dynamic programming coding
A digital display device, such as a plasma display or a digital DMD based light digital project employs a minimum moving pixel distortion (MPD) set of codewords for reducing visually perceived...
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6100872 |
Display control method and apparatus
A display control method and apparatus for quantizes input data to binary or multivalued data and delivers the quantized data to a display device such as a matrix panel display. When input data is...
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6094184 |
Driving method and driving circuit for ferroelectric liquid crystal display element
A ferroelectric liquid crystal display element is structured so that ferroelectric liquid crystal is provided between a plurality of signal line electrodes and a plurality of scanning line...
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6091386 |
Extended frame-rate acceleration with gray-scaling for multi-virtual-segment flat-panel displays
Frame acceleration is achieved by driving multiple LCD frames to a flat-panel display for each CRT frame. Rather than divide the flat-panel display into an upper and a lower half, the panel is...
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6091387 |
Liquid crystal display device and driving method of the same
A driving method of a liquid crystal display device of a matrix type including a plurality of scanning electrodes and a plurality of data electrodes is provided. Certain scanning electrodes are...
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6084560 |
Image display for dither halftoning
Disclosed is an image display apparatus for dither halftoning a video signal that enters from an external unit and displaying the resulting video signal on a display unit. A dither table, which...
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6084561 |
Liquid crystal controller and liquid crystal display unit
A liquid crystal controller for controlling display of a liquid crystal display device of passive matrix type includes gray scale processing being performed on input data before being written in a...
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6074790 |
Black and white defect correction for a digital micromirror printer
A method for defect-correction printing. A spatial light modulator that is used to generate the image is mapped for defects. The ON defects are compensated by setting a background level that is...
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6075506 |
Display and method of operating a display
A display such as a ferroelectric liquid crystal display includes a matrix of pixels, for instance formed at the intersections of data electrodes and strobe electrodes. In order to address an...
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6075507 |
Active-matrix display system with less signal line drive circuits
An active matrix liquid display system where two scanning lines are successively selected within one horizontal scanning period, by which display voltages are written on pixels lined up in a...
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6072452 |
System and method for using forced states to improve gray scale performance of a display
A display driver circuit and method for receiving a display data stream, modifying the display data stream to enhance gray scale performance, and outputting the modified display data stream. The...
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