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Class 345/95 - Three or more voltages


Subclass of Class 345 - Computer graphics processing and selective visual display systems
Definition: Subject matter in which the waveforms include pulses with
No. of patents: 516
Last issue date: 04/24/2012


1                      
NumberTitleIssue Date
8164556Liquid crystal display and driving method thereof
A liquid crystal display includes a liquid crystal display panel including a plurality of data lines, a plurality of gate lines crossing the plurality of data lines, and a plurality of liquid crystal cells defined as a first and second liquid crystal cell groups, a ...
04/24/2012
8125432Common voltage generation circuit employing a charge-pump operation to generate low-potential-side voltage
A common voltage generation circuit includes a first operational amplifier which outputs an amplitude voltage of a common voltage based on a first power supply voltage, a second operational amplifier which outputs a high-potential-side voltage of the common voltage ...
02/28/2012
8125433Liquid crystal display device and driving method thereof
A liquid crystal display device and a driving method thereof are provided which can increase a display grade by removing a DC residual image. The liquid crystal display device comprises: a liquid crystal display panel for displaying gray levels by a potential differ...
02/28/2012
8125431Electro-optical device and electronic apparatus
The electro-optical device is directly connected to a battery and includes a display panel, a driver, and a voltage adjusting circuit. The driver amplifies an input voltage and supplies the amplified voltage to the display panel. The voltage adjusting circuit includ...
02/28/2012
8120564Low power driving method and driving signal generation method for image display apparatus
By a low power consumption driving method for an image display apparatus, unusual display may be prevented even if gate driving is not enough. When a rising edge of an output enable pulse is detected, a logic LOW gate driving signal is discharged to GND. When a fall...
02/21/2012
8115718Color passive matrix bistable liquid crystal display system and method for driving the same
This invention provides a color passive matrix bistable liquid crystal display system, in which one respective scan line corresponds to sub-pixels of same color and neighboring scan lines correspond to sub-pixels of different colors. The scan lines are grouped in ac...
02/14/2012
8111228Method and device to optimize power consumption in liquid crystal display
Power consumption in liquid crystal displays is analyzed by including frequent polarity reversals and duty cycle control. A multi-step voltage profile is proposed to reduce the power consumption in multiplexed and non-multiplexed displays. The present invention rela...
02/07/2012
8068079Liquid crystal display apparatus
A liquid crystal display apparatus includes a liquid crystal modulation element configured to modulate light from a light source, and including a first electrode, a second electrode, a liquid crystal layer disposed between the first electrode and the second electrod...
11/29/2011
8068078Electro-luminescence display device and driving apparatus thereof
The present invention relates to an electro-luminescence display and a driving method thereof wherein a thin film transistor is prevented from the deterioration, to thereby improve a picture quality. An electro-luminescence (EL) display, including: a plurality of dr...
11/29/2011
8059079Liquid crystal display with periodical changed voltage difference between data voltage and common voltage and driving method thereof
An exemplary liquid crystal display (20) includes a plurality of pixel units (240) each including a pixel electrode (26) and a common electrode (22), a data driving circuit (33) providing a plurality of data voltages to each pixel ...
11/15/2011
8035598Method for improving image sticking of liquid crystal displays
Improving image sticking of a liquid crystal display (LCD) including a plurality of pixels, each of which includes a first subpixel and a second subpixel, includes driving the first subpixels of the pixels with a first optimized common voltage, driving the second su...
10/11/2011
7903068Liquid crystal display and driving method thereof
The present invention provides a liquid crystal display including a plurality of pixel units defined by scanning lines and data lines. Each pixel unit includes two sub-pixels. Each sub-pixel includes a storage capacitor. The two storage capacitors in a pixel unit ar...
03/08/2011
7847775Electro-optical device, method of driving electro-optical device, and electronic apparatus
An electro-optical device includes pixels that are provided to correspond to intersections of a plurality of rows of scanning lines and a plurality of columns of first data lines, each pixel having an pixel electrode, a common electrode that faces the pixel electrod...
12/07/2010
7817126Liquid crystal display device and method of driving the same
A liquid crystal display system reduces a consumed current and reduces generation of heat in a data integrated circuit, the liquid crystal display device includes a liquid crystal cell array, a first charge sharing circuit arranged on one side of the liquid crystal ...
10/19/2010
7812804Drive circuit for display apparatus and display apparatus
A drive circuit that is an example of the present invention is a drive circuit of a display device for outputting in parallel the analog picture signals generated based on the digital picture signals inputted in serial. This circuit comprises a level shift circuit f...
10/12/2010
7773067Liquid crystal display with three-level scanning signal driving
An exemplary thin film transistor liquid crystal display (TFT-LCD) (100) includes an LCD panel having a number n (where n is a natural number) of gate lines G1-Gn that are parallel to each other, a data driving circuit (120), and a gate driving ...
08/10/2010
7750881Voltage conversion device having non-linear gain
A voltage conversion device has a non-linear gain, for converting analog voltage provided by an analog voltage source. The voltage conversion device comprises a gain decision module, a voltage selection module, and a voltage output module. The gain decision module c...
07/06/2010
7724227Signal compensation for flat panel display
A flat panel display includes a plurality of pixel circuits, each pixel circuit including a switch and a storage capacitor, in which the storage capacitor receives pixel data from a data line when the switch is turned on. A scan driver controls the switches of the p...
05/25/2010
7656378Drive circuit for display apparatus and display apparatus
A drive circuit that is an example of the present invention is a drive circuit of a display device for outputting in parallel the analog picture signals generated based on the digital picture signals inputted in serial. This circuit comprises a level shift circuit f...
02/02/2010
7633478Power supply circuit, display driver, electro-optical device, electronic instrument, and method of controlling power supply circuit
A power supply circuit including a high-potential-side voltage generation circuit and a low-potential-side voltage generation circuit which respectively generate a high-potential-side voltage and a low-potential-side voltage to be supplied to a common electrode, and...
12/15/2009
7522141Cholesteric liquid crystal display system
A method of writing an image on a liquid crystal display of the type having a layer of cholesteric liquid crystal material disposed between a pair of unpatterned conductors and a light absorbing layer for forming an image wise thermal pattern in response to an image...
04/21/2009
7495646Display device having improved drive circuit and method of driving same
A display device which includes a plurality of adjacent gate lines and drain lines disposed in a display area of the display device, and a plurality of pixels disposed in the display area, each of the plurality of pixels having a switching element coupled to a corre...
02/24/2009
7432896Method of driving a liquid crystal display panel
A liquid crystal display panel comprises a liquid crystal layer disposed between a row electrode group and a column electrode group defining a plurality of pixels arranged in a matrix. Full screen display on the liquid crystal display panel is carried out using a mu...
10/07/2008
7427975Double waveform method for driving signals through a transmission line
A double waveform method for driving a transmission line at an initial voltage to a final voltage is provided. The method includes finding a first voltage, a first maintenance period for the first voltage, a second voltage and a second maintenance period for the sec...
09/23/2008
7423625Liquid crystal display and driving method thereof
A liquid crystal display is provided, which includes: a plurality of pixel row groups, each pixel row group including at least one pixel row that includes a plurality of pixels arranged in a matrix and including switching elements; a plurality of gate lines connecte...
09/09/2008
7414601Driving circuit for liquid crystal display device and method of driving the same
A driving circuit for a liquid crystal display device includes a reference voltage source, a first switch connected to the reference voltage source, a second switch connected to the first switch, a PUMP signal generator connected to the first and second switches, th...
08/19/2008
7403186Charge characteristic compensating circuit for liquid crystal display panel
A charge characteristic compensating circuit for a liquid crystal display panel for maintaining a charge characteristic of the liquid crystal display panel independently of ambient temperature change to prevent deterioration of images displayed. A plurality of liqui...
07/22/2008
7403195Method and apparatus for driving passive matrix liquid crystal
A method and an apparatus for driving passive matrix liquid crystal, comprising the steps of: simultaneously selecting Y row electrodes, where Y is an odd number of 7 and above; calculating an exclusive OR between a Y-bit row selection vector representing a selectio...
07/22/2008
7394445Digital power manager for controlling and monitoring an array of point-of-load regulators
A power control system comprises a plurality of point-of-load (POL) regulators each adapted to convey regulated power to a load, a serial data bus operatively connecting the plurality of POL regulators, and a digital power manager connected to the data bus. The digi...
07/01/2008
7391395Super twisted nematic (STN) liquid crystal display (LCD) driver and driving method thereof
A super twisted nematic (STN) liquid crystal display (LCD) driver and a driving method thereof includes a sub frame counter that counts the number of sub frames in response to a clock signal and generates a sub frame flag signal when each sub frame is counted. An N ...
06/24/2008
7388568Liquid crystal display device and electronic apparatus using the same
In a liquid crystal display device of the present invention, a source line is formed of a gate metal and a gate line is formed of a source metal for reduction of the number of masks, whereby deterioration of a liquid crystal on the gate line is prevented. During a p...
06/17/2008
7385581Driving voltage control device, display device and driving voltage control method
A driving voltage control device includes a first to fourth capacitor, and an output section. In the first mode, the first capacitor receives a first voltage and stores a corresponding amount of charge, the second capacitor receives a second voltage and stores a cor...
06/10/2008
7375717Display panel driving device, display apparatus and method of driving the same
A display panel for driving a display panel in response to data and gate signals, includes first and second switching sections, a timing control section, a driving voltage generating section, a gate driving section and data driving section. The first switching secti...
05/20/2008
7375725Display device
Gamma correction of a video signal voltage applied to respective pixels of a display device can be accomplished without modulating a ramp voltage. The display device includes a common voltage generating circuit which selectively outputs a high-potential-side common ...
05/20/2008
7369108Liquid crystal display
A liquid crystal display is provided, which includes: a liquid crystal panel including a gate line, a data line, and a pixel including a switching element connected to the gate line and the data line; a gate driver applying a gate signal for controlling the switchin...
05/06/2008
7365725Liquid crystal display device
In a liquid crystal display device, drain signal lines which supply the video signal are arranged to cross gate signal lines which supply the scanning signal and counter voltage signal lines which supply the reference signal. The reference signal is supplied to the ...
04/29/2008
7362296Liquid crystal display and driving method thereof
A method of optimizing pixel signals for a liquid crystal display includes receiving the first, second and third pixel signals for the (n−1), (n) and (n+1)th frames. The first and second pixel signals are compared to determine if the second pixel signal requires o...
04/22/2008
7362297Display device
A display device of the present invention has an incorporated charge pump control circuit and a clock frequency of a switching element can be varied according to a display mode to reduce the power consumption. On the display device, a variable frequency-dividing cir...
04/22/2008
7362294Low power LCD with gray shade driving scheme
In a passive liquid crystal display, frames or fields are displayed for different time periods to achieve gray scale. The voltage pulses applied to the column electrodes have substantially constant values during row scanning periods or field scanning periods to redu...
04/22/2008
7358943Color display apparatus
A color display apparatus includes a display panel which has a light reflection area and a light transmission area for each pixel, and a light source for causing light to enter the display panel from a back surface. The light reflection area includes a first subarea...
04/15/2008
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