Patent application number | Description | Published |
20080231364 | AMPLIFYING CIRCUIT HAVING A PULL-UP CIRCUIT AND A PULL-DOWN CIRCUIT FOR INCREASING SLEW RATE - An amplifying circuit includes an operational amplifier, a pull-up circuit and a pull-down circuit. The operational amplifier generates a first pull-up signal, a first pull-down signal and an output signal, wherein the phases of the first pull-up signal and the first pull-down signal are out of phase with the output signal. The pull-up circuit includes a first controlling module for outputting a second pull-up signal according to the first pull-up signal, and a first adjusting module for adjusting the output signal according to the second pull-up signal. The pull-down circuit includes a second controlling module for outputting a second pull-down signal according to the first pull-down signal, and a second adjusting module for adjusting the output signal according to the second pull-down signal. | 09-25-2008 |
20080309681 | DEVICE AND METHOD FOR DRIVING LIQUID CRYSTAL DISPLAY PANEL - A device for driving an LCD panel comprises: a gray level voltage generation circuit, for generating gray level voltages, and determining whether the gray level voltages are generated by utilizing a first set of reference voltages or a second set of reference voltages according to a polarity inversion control signal, where the gray level voltage generation circuit determines whether a gray level voltage is generated by utilizing a maximum of the first set of reference voltages or a maximum of the second set of reference voltages, and determines whether another gray level voltage is generated by utilizing a minimum of the first set of reference voltages or a minimum of the second set of reference voltages; and a source driving circuit, for selecting a gray level voltage according to display data or inverted data of the display data to drive a source of a display cell of the LCD panel. | 12-18-2008 |
20090164859 | DRIVING CIRCUIT OF DISPLAY APPARATUS AND DRIVING METHOD THEREOF - A driving circuit of a display apparatus includes a decoder coupled to a plurality of scan lines of a display panel for decoding a plurality of input signals to output a plurality of scan line driving signals to thereby enable at least one scan line of the plurality of scan lines, and a plurality of control units (respectively coupled to the plurality of scan lines) for receiving an output enable signal to disable the plurality of scan lines during an interval between two scan lines being enabled. | 06-25-2009 |
20100007643 | DRIVING CIRCUIT - The present invention provides a driving circuit. The driving circuit includes: an amount Z of first level shifting units, an amount B of second level shifting units, a first matrix decoding unit, an amount C of third level shifting units, an amount D of fourth level shifting units, a second matrix decoding unit, and a third matrix decoding unit. The driving circuit can generate an amount (Z×B)×(C×D) of high voltage digital output signals. The driving circuit provided by the present invention can significantly decrease the required high voltage elements (i.e. the level shifting units), and thus the present invention can reduce area of the driving circuit efficiently. | 01-14-2010 |
20100110110 | DRIVING CIRCUIT - The present invention provides a driving circuit. The driving circuit comprises: a plurality of signal output terminals, a data signal generating module, a gray level reference voltage generating module, a digital-to-analog converter (DAC), a first multiplex output module, an output buffer, a second multiplex output module, and a switch module. The driving circuit of the present invention can reduce the amount of required output buffers, so as to reduce area of the driving circuit efficiently and lower the production cost. | 05-06-2010 |
20110080379 | DRIVING CIRCUIT - The present invention provides a driving circuit comprising a first data logic unit, a latch unit, and a determining unit. The first data logic unit is utilized for receiving at least a digital data signal and a first control signal, and for selectively inversing the digital data signal to generate a first digital output data signal according to the first control signal. The latch unit is utilized for receiving the first digital output data signal and a second control signal, and for selectively setting a second digital output data signal whether inversed from the first digital output data signal according to the second control signal. The determining unit is utilized for receiving the digital data signal and determining a transition number of the digital data signal in comparison with a previous digital data signal, and outputting the first control signal and the second control signal according to the transition number. | 04-07-2011 |
20110115502 | CAPACITANCE DIFFERENCE DETECTING CIRCUIT AND CAPACITANCE DIFFERENCE DETECTING METHOD - A capacitance difference detecting circuit, which comprises: a control circuit, for generating a control signal according to a first voltage and a second voltage; a first capacitor to be detected; a second capacitor to be detected; a first constant capacitor, having a terminal coupled to the first terminal of the first capacitor to be detected and the first input terminal; a second constant capacitor, having a terminal coupled to the first terminal of the second capacitor to be detected and the second input terminal; a voltage control unit, cooperating with the first capacitor to be detected, the second capacitor to be detected, the first constant capacitor and the second constant capacitor to control the first voltage and the second voltage. The voltage control unit is an adjustable capacitor and a capacitance value of the adjustable capacitor is controlled by the control signal. | 05-19-2011 |
20120286811 | CAPACITANCE DIFFERENCE DETECTING METHOD - A capacitance difference detecting method, comprising: (a) utilizing a voltage control unit to cooperate with a first capacitor to be detected and a second capacitor to be detected to generate a first voltage and a second voltage; and (b) computing a capacitance difference between the first capacitor to be detected and the second capacitor to be detected according to the first voltage, the second voltage and a parameter of the voltage control unit. | 11-15-2012 |
20120286812 | CAPACITANCE DIFFERENCE DETECTING CIRCUIT - A capacitance difference detecting circuit, which comprises: a control circuit, for generating a control signal according to a first voltage and a second voltage; a first capacitor to be detected; a second capacitor to be detected; a voltage control unit, for cooperating with the first capacitor to be detected and the second capacitor to be detected, according to the control signal, to generate the first voltage and the second voltage; and a computing device, for computing a capacitance difference between the first capacitor to be detected and the second capacitor to be detected according to the first voltage, the second voltage and a parameter of the voltage control unit. | 11-15-2012 |