Patent application number | Description | Published |
20090058844 | DISPLAY DEVICE AND DRIVING METHOD FOR A DISPLAY DEVICE - A scan driver selects first four rows of pixels at a time and then sequentially selects second four rows of pixels for each row in double gate driving. A data driver supplies a tone voltage corresponding to black data to the first four row of pixels at a time and then sequentially supplies a tone voltage corresponding to display data to the second four rows of pixels. | 03-05-2009 |
20090243974 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device includes a plurality of gate lines, at least one data line, and a plurality of pixels connected to the plurality of gate lines and the at least one data line. The display device is configured to perform a first step of sequentially selecting N lines of the plurality of gate lines, and sequentially outputting N times display signals to the data line, and to perform a second step of selecting Z lines of the plurality of gate lines at one time, and outputting one time a blanking signal, where N and Z are natural numbers at least equal to 2. The Z lines are separate from the N lines, and the first step and the second step are repeatedly performed. | 10-01-2009 |
20090284514 | PLASMA DISPLAY APPARATUS AND ITS DRIVE CIRCUIT - In a plasma display apparatus and its drive circuit, a period that capacitance Cxa formed between an address electrode and an X-discharge maintaining electrode and capacitance Cya formed between the address electrode and a Y-discharge maintaining electrode are charged is provided when the address electrode is driven so that the address electrode is set to high-impedance state during a discharge maintaining period to reduce apparent capacitance. Furthermore, the charge period is set in a power withdrawing period and thereafter the address electrode is set to high-impedance state to change final arrival potential for power withdrawal to a discharge maintaining voltage. | 11-19-2009 |
20090289965 | LIQUID CRYSTAL DRIVING DEVICE - A liquid crystal driving device is provided, which can reduce the problem of contrast lowering of the liquid crystal display screen due to the decrease of the driving current of LED, by the control which is performed in order to cope with the decrease of the maximum rated current of LED as a light source of the backlight at a high temperature. The liquid crystal driving device includes a liquid crystal driving circuit, a backlight control unit, and display data expansion circuits. The liquid crystal driving circuit generates a liquid crystal driving signal to be supplied to a liquid crystal display panel in response to display data. The backlight control unit reduces driving current of the light emitting diode as a light source of the backlight module to illuminate the liquid crystal display panel, in response to the temperature rise of the liquid crystal display panel. The display data expansion circuit, in response to the temperature rise of the liquid crystal display panel, performs the data expansion of the display data, and compensates the contrast lowering of the liquid crystal display panel due to the dimming of the backlight module with the temperature rise of the liquid crystal display panel. | 11-26-2009 |
20100013818 | ELECTRONIC PAPER DISPLAY, SEMICONDUCTOR INTEGRATED CIRCUIT AND OPERATING METHOD FOR SEMICONDUCTOR INTEGRATED CIRCUIT - The present invention is directed to reduce power consumption in a standby operation period as a period of holding display in a no-power state. An electronic paper display has an electronic paper display panel, a display driver/controller, a battery, and a booster power source circuit. The display panel can display data by writing display data and, after that, can hold the display in a no-power state. The booster power source circuit generates a boosted power source voltage by an operation of boosting power source voltage from the battery, and the display driver/controller executes the writing of the displayed data to the display panel by using the boosted power source voltage. In the following standby operation period in which the display panel holds the display in the no-power state, the boosting operation of the booster power source circuit is stopped. | 01-21-2010 |
20100079479 | DISPLAY DRIVE CIRCUIT - A display drive circuit of the invention has: an initial-color-gamut-apex-coordinate-storing unit capable of storing initial color gamut apex coordinates; a user-target-color-gamut-apex-coordinate-storing unit capable of storing user target color gamut apex coordinates; a saturation-expansion-coefficient-deciding unit for deciding expansion coefficients of saturation data based on the initial and user target color gamut apex coordinates; and an expansion unit for expanding saturations of display data based on the saturation expansion coefficients. The expansion coefficients of saturation data are decided based on the initial and user target color gamut apex coordinates, and saturations of display data are expanded according to the expansion coefficients. Thus, the degree of expanding the saturations can be controlled for each color gamut or each of R, G and B color properties of an LC display panel. | 04-01-2010 |
20100141674 | DISPLAY DEVICE - The disclosed invention provides a display device for performing a gradation display, using a plurality of subframes of image into which one frame of image is divided, and a display method that reduces dynamic false contour noises occurring when the image is displayed and is suitable for plasma display panels and the like. Dynamic false contour noise reduction is performed by detecting luminance on/off state change (carry up/carry down) in a region where a smooth tone level change occurs and interchanging the tone values of pixels in the region. The reduction processing is controlled, based on an amount of motion of an original image and a display load ratio, so that dynamic false contour noise reduction is performed favorably. By carrying out different ways of processing for each frame, noise reduction in the time domain is performed. | 06-10-2010 |
20100182304 | MATRIX DISPLAY DEVICE - A matrix display device has first and second discharge sustaining electrode drive circuits that perform power recovery for the capacitance load through an LC resonance circuit using an inductor. During a luminescence emission period, a discharge is effected for display by applying an alternating voltage between each of plural first discharge sustaining electrodes and each of plural second discharge sustaining electrodes with a capacitance load corresponding to each display pixel. In the address scanning operation, the scan drive circuit selects the first discharge sustaining electrode per line, and in the discharge sustaining operation, the scan drive circuit provides a function for recovering power on the first discharge sustaining electrode. This is intended to decrease loss in the power recovery operation. | 07-22-2010 |
20120176400 | DISPLAY SYSTEM - A display drive circuit of the invention has: an initial-color-gamut-apex-coordinate-storing unit capable of storing initial color gamut apex coordinates; a user-target-color-gamut-apex-coordinate-storing unit capable of storing user target color gamut apex coordinates; a saturation-expansion-coefficient-deciding unit for deciding expansion coefficients of saturation data based on the initial and user target color gamut apex coordinates; and an expansion unit for expanding saturations of display data based on the saturation expansion coefficients. The expansion coefficients of saturation data are decided based on the initial and user target color gamut apex coordinates, and saturations of display data are expanded according to the expansion coefficients. Thus, the degree of expanding the saturations can be controlled for each color gamut or each of R, G and B color properties of an LC display panel. | 07-12-2012 |
20130076806 | DISPLAY SYSTEM - A display drive circuit of the invention has: an initial-color-gamut-apex-coordinate-storing unit capable of storing initial color gamut apex coordinates; a user-target-color-gamut-apex-coordinate-storing unit capable of storing user target color gamut apex coordinates; a saturation-expansion-coefficient-deciding unit for deciding expansion coefficients of saturation data based on the initial and user target color gamut apex coordinates; and an expansion unit for expanding saturations of display data based on the saturation expansion coefficients. The expansion coefficients of saturation data are decided based on the initial and user target color gamut apex coordinates, and saturations of display data are expanded according to the expansion coefficients. Thus, the degree of expanding the saturations can be controlled for each color gamut or each of R, G and B color properties of an LC display panel. | 03-28-2013 |
20130271439 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device includes a plurality of video signal lines that extends in columns in a display area, a plurality of inversion control signal line each supplied with an inversion control signal for controlling inversion, a first selector that selects one of a pair of amplifiers different in the polarity from each other to input signals corresponding to a pair of adjacent video signal lines on the basis of the inversion control signal, and a second selector that selects one of a pair of the corresponding adjacent video signal lines to input signals output from the pair of amplifiers on the basis of the inversion control signal, in which at least one of the signals to be supplied to the plurality of inversion control signal lines is a signal different from other signals. | 10-17-2013 |
20140104302 | DISPLAY SYSTEM - A display drive circuit of the invention has: an initial-color-gamut-apex-coordinate-storing unit capable of storing initial color gamut apex coordinates; a user-target-color-gamut-apex-coordinate-storing unit capable of storing user target color gamut apex coordinates; a saturation-expansion-coefficient-deciding unit for deciding expansion coefficients of saturation data based on the initial and user target color gamut apex coordinates; and an expansion unit for expanding saturations of display data based on the saturation expansion coefficients. The expansion coefficients of saturation data are decided based on the initial and user target color gamut apex coordinates, and saturations of display data are expanded according to the expansion coefficients. Thus, the degree of expanding the saturations can be controlled for each color gamut or each of R, G and B color properties of an LC display panel. | 04-17-2014 |