Patent application number | Description | Published |
20090009462 | LIQUID CRYSTAL DISPLAY PANEL AND DRIVING METHOD THEREOF - An LCD panel including a liquid crystal cell array, gate driving integrated circuits (ICs), first source driving ICs, second source driving ICs and a timing control circuit is provided. The liquid crystal cell array has a first display area and a second display area. The first and the second source driving ICs are electrically connected with the first and the second display areas, respectively, while the timing control circuit is electrically connected with the source and the gate driving ICs. The LCD panel is driven by writing data into the first display area through the first source driving ICs via a first receiving/transmitting mode and writing data into the second display area through the second source driving ICs via a second receiving/transmitting mode. The first data receiving/transmitting mode is different from the second receiving/transmitting mode. | 01-08-2009 |
20100134172 | CHARGE-SHARING METHOD AND DEVICE FOR CLOCK SIGNAL GENERATION - A clock generation circuit has two output ends to provide a first clock signal and a second clock signal, in response to first and second input signals, respectively. A charge storage component is used to transfer some charge from the first output end to the charge storage component when the first clock signal is high for a period of time, and to transfer the charge from the charge storage component to the second output end when the second clock signal is low. At a different period of time in the clock cycle, the charge storage component is used to transfer some charge from the second output end to the charge storage component when the second clock signal is high for a period of time, and to transfer the charge from the charge storage component to the first output end when the first clock signal is low. | 06-03-2010 |
20110102471 | METHOD AND DEVICE FOR DRIVING LIQUID CRYSTAL DISPLAY - The present invention in one aspect relates to a source driver for driving a display panel to display an image data in an adaptive column inversion. In one embodiment, the source driver includes a data processing unit having a logic circuit adapted for determining N most-significant bits (MSBs) of image data signals of two neighboring data lines, such that when all of the N MSBs are equal to 1 or 0, the output of the logic circuit is 1, otherwise, the output of the logic circuit is 0, and a MUX coupled to the data processing unit and adapted for receiving a frame polarity control signal, FramePOL, and a pixel polarity control signal, XPOL, and selectively outputting the frame polarity control signal FramePOL when the output of the logic circuit is 1, or the pixel polarity control signal POL when the output of the logic circuit is 0, as a polarity control signal, POL. | 05-05-2011 |
20140267472 | METHOD AND SOURCE DRIVER FOR DRIVING LIQUID CRYSTAL DISPLAY - In one aspect of the invention, a source driver for driving a display panel to display an image data in an adaptive column inversion includes a data processing unit having a logic circuit adapted for determining N most-significant bits (MSBs) of image data signals of two neighboring data lines, such that when all of the N MSBs are equal to 1 or 0, the output of the logic circuit is 1, otherwise, the output of the logic circuit is 0, and a MUX coupled to the data processing unit and adapted for receiving a frame polarity control signal, FramePOL, and a pixel polarity control signal, XPOL, and selectively outputting the frame polarity control signal FramePOL when the output of the logic circuit is 1, or the pixel polarity control signal POL when the output of the logic circuit is 0, as a polarity control signal, POL. | 09-18-2014 |
Patent application number | Description | Published |
20100245333 | LIQUID CRYSTAL DISPLAY DEVICE CAPABLE OF REDUCING IMAGE FLICKER AND METHOD FOR DRIVING THE SAME - A method for driving a liquid crystal display adjusts the falling edges of the gate driving signals for reducing image flicker. A first gate driving signal falls from a high level to a first level at the signal falling edge. A second gate driving signal falls from the high level to a second level at the signal falling edge. When the parasitic capacitance of a first pixel is larger than that of a second pixel, the first level is lower than the second level; when the parasitic capacitance of the first pixel is substantially the same as that of the second pixel, the first level is the same as the second level; when the parasitic capacitance of the first pixel is smaller than that of the second pixel, the first level is higher than the second level. | 09-30-2010 |
20100315322 | LIQUID CRYSTAL DISPLAY AND DRIVING METHOD THEREOF - A liquid crystal display includes a gate driver, a control circuit and a charge-sharing circuit. The control circuit provides a charge-sharing signal according to the parasitic capacitances at a first output end and a second output end in the gate driver. The charge-sharing circuit generates a third clock signal and a fourth clock signal by performing charge-sharing on a first clock signal and a second clock signal according to the charge-sharing signal. The third clock signal includes a signal falling edge which descends from a high level to a first level, and the fourth clock signal includes a signal falling edge which descends from the high level to a second level. The gate driver outputs a first gate driving signal and a second gate driving signal respectively at the first and the second output end according the third or the fourth clock signal. | 12-16-2010 |
20110050682 | Liquid Crystal Display Device and Back Light Module of the Liquid Crystal Display Device - A back light module of a liquid crystal display device and the liquid crystal display device are provided. The back light module includes a printed circuit board (PCB), a light emitting diode (LED) driver, and a plurality of LED light bars. Each LED light bar has a plurality of LED series. The LED driver simultaneously electrically connects the LED series of different LED light bars via tracks of the PCB. | 03-03-2011 |
20110084894 | GATE OUTPUT CONTROL METHOD AND CORRESPONDING GATE PULSE MODULATOR - A gate output control method is adapted into a flat display having a plurality of gate drive integrated circuits. The method comprises: providing a gate control signal; providing a oblique control signal to oblique modulate the gate control signal for generating a gate control signal with oblique; modulating the gate control signal with oblique to obtain a modulated gate control signal; and outputting the modulated gate control signal to the gate drive integrated circuits. A falling edge of the modulated gate control signal comprises a oblique-varying period and a vertical-varying period. In the oblique-varying period, the modulated gate control signal firstly changes to a predetermined voltage in a first slope, and then changes in a second slope until the vertical-varying period. In the vertical-varying period, the modulated gate control signal changes vertically or nearly vertically. | 04-14-2011 |
20110090199 | Display Panel Driving Circuit, Display Panel, and Driving Method thereof - By following properties that there is coupled noise, which is coupled from a display panel, within at least one common voltage used on the display panel, the at least one common voltage is fed-back into a pixel electrode driving module, and driving voltages are generated accordingly, so that the generated driving voltages carry noises closes to coupled noises of the display panel. As a result, while the driving voltages carrying noises from the at least one common voltage, the pixel electrode driving module is capable of driving a corresponding pixel electrode with a stable voltage difference, and thereby capable of relieving horizontal crosstalk and raising a display quality of the display panel. | 04-21-2011 |
20110115771 | LIQUID CRYSTAL DISPLAY AND METHOD OF DRIVING THE SAME - A liquid crystal display includes a reference voltage generator, a voltage selector, a timing controller, a voltage level shifter, a gate driving circuit and a pixel array. The reference voltage generator is employed to provide a first high reference voltage and a second high reference voltage. The voltage selector is utilized for selecting either the first high reference voltage or the second high reference voltage as a high reference voltage. The timing controller functions to provide a scan control signal. The voltage level shifter generates a preliminary driving signal according to the scan control signal and the high reference voltages. The gate driving circuit provides plural gate signals according to the preliminary driving signal. The pixel array is for displaying images according to the gate signals. | 05-19-2011 |
20110148830 | Gate Driving Circuit - An exemplary gate driving circuit is formed on a substrate and includes a plurality of shift register stages successively arranged on the substrate along a predetermined direction. The shift register stages are grouped into a plurality of groups and for outputting a plurality of gate driving signals. Each of the groups includes a plurality of cascade-connected the shift register stages. Time sequences of a plurality of start pulse signals inputted into the groups are different from one another. An output order of the gate driving signals is different from the arranging order of all the shift register stages. | 06-23-2011 |
20110169723 | Level Shift Circuit, Liquid Crystal Display Device and Charge Sharing Method - A level shift circuit includes a control logic circuit, a plurality of level shift output buffers and a plurality of charge sharing circuits. The control logic circuit receives input clock pulse signals and a charge sharing signal and acquires voltage level information of each received signal. Each output buffer amplifies a corresponding input clock pulse signal and determines whether to output a signal according to the acquired information of the charge sharing signal. Each charge sharing circuit determines whether to be turned on according to the acquired information of a corresponding input clock pulse signal. When a charge sharing circuit is turned on, the output terminal of a corresponding output buffer and a predetermined voltage level are coupled to each other by the charge sharing circuit, so as to perform the charge sharing operation. Furthermore, a corresponding liquid crystal display device and a corresponding charge sharing method are also provided. | 07-14-2011 |
20110169816 | Gate Output Control Method - An exemplary gate output control method includes the following steps: providing a gate control signal; using an angling control signal to angling modulate the gate control signal so as to generate a modulated gate control signal; and supplying the modulated gate control signal to a first integrated gate driver circuit and a second integrated gate driver circuit, to sequentially control the gate outputs of the first integrated gate driver circuit and the second integrated gate driver circuit. A duty ratio used by the angling control signal at the time of modulating the gate control signal to generate the modulated gate control signal for the first integrated gate driver circuit is different from another duty ratio used by the angling control signal at the time of modulating the gate control signal to generate the modulated gate control signal for the second integrated gate driver circuit. | 07-14-2011 |
20110248985 | DISPLAY DEVICE, DISPLAY DEVICE DRIVING METHOD AND SOURCE DRIVING CIRCUIT - A display device includes multiple first data lines, multiple second data lines, multiple pixel columns, at least a first charge sharing switch circuit and at least a second charge sharing switch circuit. The second data lines are alternately arranged with the first data lines. Each of the pixel columns includes multiple first pixels and multiple second pixels. The first pixels of each of the pixel columns are coupled to one of the first data lines, and the second pixels of each of the pixel columns are coupled to one of the second data lines. The first charge sharing switch circuit each is electrically coupled to at least a part of the first data lines. The second charge sharing switch circuit each is electrically coupled to at least a part of the second data lines. A display device driving method and a source driving circuit also are provided. | 10-13-2011 |
20120038610 | GATE PULSE MODULATING CIRCUIT AND METHOD - A gate pulse modulating circuit includes a timing controller capable of generating an output enable signal and a plurality of timing control signals; a high gate voltage generating unit, electrically connected to the timing controller for receiving the timing control signals, capable of generating a high gate voltage with a waveform including a plurality of cutting edges in response to the timing control signals; a low gate voltage generating unit capable of generating a low gate voltage; and a gate driver, electrically connected to the timing controller for receiving the output enable signal and the high gate voltage generating unit for receiving the high gate voltage and the low gate voltage generating unit for receiving the low gate voltage, capable of generating a plurality of gate pulses in response to a plurality of enable periods of the output enable signal; wherein a waveform of the gate pulses includes a plurality of cutting edges. | 02-16-2012 |
20120038622 | LEVEL SHIFTER, METHOD FOR GENERATING CLOCK-PULSE OUTPUT SIGNAL AND CORRESPONDING FLAT DISPLAY DEVICE - A level shifter includes at least one level shift unit for generating a corresponding clock-pulse output signal. The level shift unit receives a corresponding clock-pulse input signal. The clock-pulse output signal successively shares charges with respective auxiliary reference voltage sources to pull up a voltage level of the clock-pulse output signal from the second reference voltage to the first reference voltage. Alternatively, the clock-pulse output signal successively shares charges with respective auxiliary reference voltage sources to pull down the voltage level of the clock-pulse output signal from the first reference voltage to the second reference voltage. | 02-16-2012 |
20120154358 | SOURCE-DRIVING CIRCUIT, DISPLAY APPARATUS AND OPERATION METHOD THEREOF - A source-driving circuit comprises a plurality of first and second data-outputting units, a first and a second charge-sharing units and a charge-sharing switch circuit. The first and second data-outputting units have corresponding first and second output terminals respectively for outputting data signals with a first polarity and a second polarity. The first and second charge-sharing units comprise a plurality of first and second switches respectively. Each first switch is electrically connected between each two first output terminals and each two second output terminals. Each second switch is electrically connected between one of the first outputting terminals and a corresponding one of the second outputting terminals. A charge-sharing switch circuit is electrically connected to the first and second charge-sharing units for outputting a switch signal to the first and second charge-sharing units according to a polarity signal, so as to determine the on/off statuses of the first and second switches. | 06-21-2012 |
20120169782 | IMAGE DISPLAYING METHOD FOR DISPLAY DEVICE - An exemplary image displaying method for a display device includes steps of: providing display data to pixels of the display device for displaying images; taking a special amount of frame of images as an image group, making polarities of a same pixel being of adjacent two frame of images in the image group and using a same polarity inversion in the adjacent two frame of images be different from each other, and making polarities of a same pixel being of the last frame of image in a former one of adjacent two image groups and of the first frame of image in a latter one of the adjacent two image groups and using the same polarity inversion in the last and first frame of images be the same with each other. | 07-05-2012 |
20120194569 | DRIVER OF A LIQUID CRYSTAL DISPLAY PANEL AND METHOD THEREOF - The present invention provides a method for driving a liquid crystal display panel. The liquid crystal display panel has a plurality of pixels arranged in a matrix form and a plurality of data lines. The method includes generating gray level signals corresponding to the plurality of pixels according to input image data; determining whether the gray level values of the pixels in a same row corresponding to the plurality of data lines of a first color are all outside a first range; and when the gray level values of the pixels in the same row corresponding to the plurality of data lines of the first color are all outside the first range, controlling polarity of the gray level signals of the pixels in the same row corresponding to the plurality of data lines of the first color in a column inversion mode. | 08-02-2012 |
20120242647 | CONTROL METHOD OF OUTPUT SIGNAL FROM TIMING CONTROLLER IN FLAT PANEL DISPLAY DEVICE - An exemplary control method of an output signal (e.g., from a timing controller in a flat panel display device) is adapted to be operative with a first signal with multiple pulses. In the control method, during a first time segment including part of the pulses of the first signal, a first enable signal is provided passing through a transmission path after a first time length from a rising edge of each of the part of the pulses. During a second time segment including another part of the pulses of the first signal, a second enable signal is provided passing through a part of the transmission path after a second time length from a rising edge of each of the another part of the pulses. The first time length is shorter than the second time length. | 09-27-2012 |
20120262431 | HALF SOURCE DRIVING DISPLAY PANEL - A half source driving display panel includes a first to a fourth data line, a plurality of pixels, and a plurality of gate lines including a first and a second gate line. The two pixels disposed between the first and the second gate line and between the first and the second data line are driven by one of the first and the second gate line, and so do the two pixels disposed between the first and the second gate line and between the third and the fourth data line. Two pixels disposed between the first and the second gate line and between the second and the third data line are driven by the other one of the first and the second gate line. | 10-18-2012 |
20120287170 | LIQUID CRYSTAL DISPLAY AND DRIVING METHOD THEREOF - A liquid crystal display having adaptive driving mechanism includes plural pixel array areas and a driving module. Each pixel array area has a plurality of pixels. The driving module includes a signal generation unit for generating grey-level signals corresponding to the pixels based on input image data, a weighting conversion unit for converting the grey-level signals corresponding to the pixels into a plurality of weightings, a weighting processing unit for generating a weighting sum by summing up the weightings corresponding to the pixel array area, an inversion-mode setting unit for setting a polarity inversion mode according to the weighting sum, and a data signal output unit. The data signal output unit is utilized for providing a plurality of data signals to be written into the pixel array area based on the polarity inversion mode. | 11-15-2012 |
20140055435 | IMAGE DISPLAYING METHOD FOR DISPLAY DEVICE - An exemplary image displaying method for a display device includes steps of: providing display data to pixels of the display device for displaying images; taking a special amount of frame of images as an image group, making polarities of a same pixel being of adjacent two frame of images in the image group and using a same polarity inversion in the adjacent two frame of images be different from each other, and making polarities of a same pixel being of the last frame of image in a former one of adjacent two image groups and of the first frame of image in a latter one of the adjacent two image groups and using the same polarity inversion in the last and first frame of images be the same with each other. | 02-27-2014 |