Abstract: A projection system has a display part and a digital light processor (DLP) optical system, the projection system including: a system storage part to store data inherent information corresponding to optical system data of the DLP optical system; a DLP storage part to store the optical system data and the data inherent information corresponding to the optical system data; and a controller to determine whether the data inherent information of the system storage part and the DLP storage part corresponds with each other, after reading out each of the data inherent information from the DLP storage part and the system storage part, in case that the optical system data are downloaded from the DLP storage part to the system storage part, and to download the optical system data if the data inherent information corresponds with each other.

Abstract: A display control device for controlling the display of an image in a display device includes a decision unit configured to decide whether the state of a scaling of a moving-image portion in a display object image or an image to be displayed in the display device has changed; and a display control unit configured to select a screen mode for displaying the display object image in response to the change in the scaling state of the moving-image portion in the display object image, and to display the display object image in the screen mode in the display device.

Abstract: A task analysis system includes: a document display that displays a document image and retains unit identification information identifying the document display itself; and a task management apparatus that manages a task, the task management apparatus including: a task associating unit that previously determines the unit identification information of the document display used to carry out the task; a acquisition unit that acquires the unit identification information and document identification information of a document displayed on the document display, the document identification information identifying the document; and a task analysis unit that determines the document used to carry out the task based on the document identification information, the document identification information being acquired corresponding to the unit identification information determined in the task associating unit.

Abstract: A light emitting diode (LED) light source module includes plural voltage converters to convert an input voltage into plural corresponding different operation voltages. A plurality of sets of different color LEDs are provided in the light source module, where each set receives a corresponding one of the operation voltages.

Abstract: An electronic device such as a portable phone has a casing, a display element provided in the casing, and a panel attached to the casing to cover the display element. A half mirror layer and a shading layer are formed on the panel. An opening of the shading layer is above the display element. The surface of the panel is seen in a substantially continuously uniform color when no electricity is supplied to the display element, and a display produced by the display element can be seen through the panel when electricity is supplied to the display element.

Abstract: The present invention discloses an LED driving device with pulse width modulation (PWM) capable of preventing the LED display from flickering. The LED driving device primarily comprises a PWM unit for modulating the ON/OFF signal with a PWM cycle from one signal of higher resolution to two or more signals of lower resolution. The modulation is executed with the proviso that the duty cycle of the PWM cycle is almost or completely preserved. Accordingly, the LED will be lit more frequently and perform preset brightness with a higher refresh rate.

Abstract: A plasma display panel according to the present invention is a plasma display panel including a screen with plural display lines, comprising a temperature detector which detects a temperature of at least a portion of the plasma display panel, and a display data adjustor which adjusts a line display data for one of the plural display lines, based on the detected temperature and information generated from each of the line display data.

Abstract: A plasma display apparatus and a method of driving the same are disclosed. The plasma display apparatus includes a plasma display panel, a driver that supplies a driving voltage to the plasma display panel, and a controller. After a luminance difference between a first area and a second area of the plasma display panel is maintained at a first luminance difference for a predetermined period of time, the controller compensates for a luminance of at least one of the first area or the second area when video data of an equal gray level is input in the first area and the second area.

Abstract: Disclosed herein is a plasma display device and a method of driving the plasma display device. In the method of driving the plasma display device, the plasma display device includes sustain electrodes and scan electrodes formed in parallel with each other, and ITO electrodes are spaced apart from each other by an interval of a gap between the ITO electrodes which is a predetermined value or more. The plasma display panel is separately driven in a reset period, an address period, and a sustain period. In the method, a sustain pulse is alternately applied to the sustain electrodes and the scan electrodes during the sustain period. After the sustain pulse has been applied, a predetermined region in the sustain pulse is floated in order to remove an oscillation discharge occurring after a main discharge is performed. Such an approach can prevent the luminescence characteristics of a phosphor from being deteriorated due to the distortion of the sustain pulse.

Abstract: A plasma display apparatus is disclosed. In the plasma display apparatus, a data signal includes a voltage rising period during which the data signal gradually rises to a first voltage using an inductor, a voltage maintaining period during which the data signal is maintained at a second voltage higher than the first voltage, and a voltage falling period during which the data signal gradually falls to a voltage equal to or less than the second voltage. A magnitude of the first voltage is equal to or more than one half of a magnitude of the second voltage, and is less than the magnitude of the second voltage. A current flowing in the inductor ranges from zero ampere to a maximum current value of the inductor at a time when a voltage of the data signal is equal to the first voltage.

Abstract: A display includes a plurality of data lines, a plurality of scan lines, a plurality of pixel circuits, a source driver, a gate driver, a timing controller and a gray scale circuit. The source driver includes a data line driving circuit for generating driving current corresponding to an image to be displayed by a pixel circuit, a current source for pre-charging the pixel circuit and a switch for electrically connecting the current source to the pixel circuit or electrically isolating the current source from the pixel circuit. The timing controller controls the source driver and the gate driver. The gray scale circuit controls the switch of the source driver based on gray scales of images to be displayed by the pixel circuits of a scan line.

Abstract: A driving device for an organic light-emitting panel is provided. The driving device includes a data-driving unit, a first scan-driving unit and a second scan-driving unit. The organic light-emitting panel includes a plurality of data lines and a plurality of scan lines. Each scan line has two ends connected to the driving device. Furthermore, the first scan-driving unit includes a plurality of first switches and the second scan-driving unit includes a plurality of second switches. The first switch connected to one end of one of the scan lines and the second switch connected to the other end of the same one of the scan lines are selectively simultaneously connected to a reference voltage or a ground voltage.

Abstract: A display device with improved brightness and a method of controlling the display device are presented. The display device includes a driving transistor, a pixel electrode electrically connected to the driving transistor, a detecting transistor detecting a magnitude of an electric signal transferred from the driving transistor to the pixel electrode, and a controller. The controller regulates a data voltage applied to the pixel electrode based on a difference between the detected electric signal and a predetermined reference level. The display device achieves improved homogeneity of brightness by compensating for any deterioration of TFTs.

Abstract: A display device includes a light emitting element, a first driving transistor coupled to the light emitting element and supplied with a first driving voltage, and a second driving transistor coupled to the light emitting element and the first driving transistor and supplied with a second driving voltage having a magnitude different from the first driving voltage at least for a time. A method of driving the display device is also provided.

Abstract: It is an object of the present invention to provide a display device where power consumption can be suppressed and the number of gray scales can be increased without a scanning line driver circuit on both sides of a pixel portion. In a display device having a scanning line driver circuit, a shift register included in the scanning line driver circuit has 4m-stage (m is a natural number) flip-flop circuits in every m scanning lines, and a signal which selects the scanning line in a first half period of one scanning line selection period and a signal which selects the scanning line in a second half period of the one scanning line selection period are output to the scanning line by another start pulse.

Abstract: A display device comprises a pixel structure. The pixel structure includes a first transistor having a gate and circuitry to initially set the first transistor gate at a first voltage. In response to a data signal received over a data line of the display device, the first transistor gate is set at a second voltage. The first transistor gate voltage transitions from the second voltage to a third voltage that is higher than the second voltage by a reference voltage. A light element is coupled to the first transistor and configured to emit light in response to a current through the light element.

Abstract: A display device that does not suffer from blurring or reduction in brightness is presented. The device includes a plurality of pixels, a scan driver, a signal controller, and a data driver. Each pixel includes a light-emitting element and a driving transistor that outputs a driving current to the light-emitting element. The scan driver supplies a scan signal to the pixels. The signal controller generates a first output image signal representing a brightness higher than a reference brightness and a second output image signal representing a brightness lower than the reference brightness. The data driver converts the first output image signal and the second output image signal into a first and second data voltages and alternately supplies the two data voltages to the pixels. This way, the same images are displayed with a first period and a second period having a different brightness levels, achieving an impulsive effect between frames.

Abstract: In a driver circuit of a display device handling a digital image signal there is provided a driver circuit with a structure in which the timing of holding the image signal in a latch circuit is not influenced by a delay of a sampling pulse. A precharge TFT (102) is turned ON in a return line period and an input terminal of a holding portion (101) is set as Hi (VDD). When there is input to all the three signals, the sampling pulse, and a multiplex signal and the digital image signal which are input from the outside, TFTs (104 to 106) all turn ON, and the potential of the input terminal of the holding portion (101) becomes a Lo potential. Thus, holding of the digital image signal is performed. A sampling pulse width is wider than a pulse width of the two signals input from the outside, and the output periods of the two signals input from the outside are completely included in an output period of the sampling pulse.

Abstract: One embodiment of a display system includes a control module that controls a position of an adjustable neutral density filter based on a calculated filter setting and that controls modulation of a set of frame data by an image modulator based on a calculated gain setting, and an image analysis module that calculates a gain setting and a filter setting for the set of frame data and forwards the calculated gain setting and the filter setting to said control module.

Abstract: One embodiment of a display system includes a control module that controls an adjustable aperture based on a calculated aperture setting and that applies a calculated gain setting to a set of frame data to define a modified set of frame data, an image analysis module that calculates a gain setting and an aperture setting for said set of frame data and forwards said calculated gain setting and said aperture setting to said control module, and a frame data buffer that stores said set of frame data during calculation by said image analysis module.

Abstract: A display apparatus comprises a light source which sequentially emits light of a plurality of colors, a display part which selectively projects the light emitted from the light source and displays an image, a data storage which stores a plurality of waveform data for representing a ratio of the plurality of colors, a light source driver which controls a strength of the light emitted from the light source, and a controller which selects a waveform data from the plurality of waveform data and controls the light source driver to control the strength of the light based on the selected waveform data.

Abstract: When receiving an interlaced video signal, an I/P conversion section converts the interlaced video signal into a progressive video signal by any of two or more I/P conversion methods. Further, an emphasis conversion section subjects the progressive video signal to emphasis conversion. Here, a control CPU controls the degree of emphasis conversion performed by the emphasis conversion section so as to be changed in accordance with which kind of conversion method among the two or more conversion methods is used for the conversion. This makes it possible to subject video data supplied to a liquid crystal display panel to emphasis conversion with a degree corresponding to the conversion method. As a result of this, it is possible to implement a liquid crystal display device which can realize both improvement in response speed of a liquid crystal display device and improvement in quality of video image displayed on the liquid crystal display device.

Abstract: A method for driving a panel includes measuring common electrode voltage characteristics of the panel in the X and Y direction of the panel, and modifying driving voltages of the pixel units based on the corresponding measured common electrode voltage characteristics. The pixel units on different locations of the panel can thus be provided with a best symmetric center during the positive and negative driving periods.

Abstract: A liquid crystal display panel includes a plurality of gate lines, a gate driving unit mounted onto the liquid crystal display panel and connected to the plurality of gate lines and a plurality of lines applying an external signal to the gate driving unit. The plurality of lines are connected to different regions on the gate driving unit in accordance with a voltage level of the signal to be applied thereto.

Abstract: The present invention relates to a device and a method for driving a liquid crystal display. The device comprises: a luminance weighting value processor for calculating a luminance weighting value according to a luminance value of a current frame and a luminance value of a previous frame of the video signal; an overdrive value generator for generating an overdrive value according to the current frame and the previous frame of the video signal; an overdrive weighting value generator for generating an overdrive weighting value according to the luminance weighting value and the overdrive value; and outputting unit for applying the overdrive weighting value and the overdrive value to the current frame of the video signal. Using the device and the method for driving a liquid crystal display according to the present invention, noise due to overdriving can be reduced.

Abstract: An image display includes the following components. A display panel has a plurality of pixels arrayed in a first direction and a second direction intersecting the first direction. A light source emits light toward the display panel. A polarization-axis control unit is disposed between the display panel and the light source. The polarization-axis control unit separates the light emitted from the light source into light having a first polarization axis and light having a second polarization axis different from the first polarization axis. An optical element is arranged between the display panel and the polarization-axis control unit. The optical element allows the light emitted from the light source to travel in a direction substantially orthogonal to the first direction.

Abstract: A driving circuit of a liquid crystal panel is provided to a glass substrate. A power supply IC for supplying power to the driving circuit is mounted on FPC for electrically connecting the liquid crystal panel and an image output IC at the outside of the liquid crystal panel. The liquid crystal panel can be driven by the driving circuit on the glass substrate without use of a relatively expensive driver IC for driving the liquid crystal panel, and thus the manufacturing cost can be suppressed. By providing the power supply IC on FPC, the precision of the power supply IC can be enhanced, and the display quality of the liquid crystal panel can be secured.

Abstract: An system is disclosed for driving a liquid crystal display for automatically adjusting a level of a common voltage at the point that a positive polarity gray scale level voltage and a negative polarity gray scale level voltage are supplied to a liquid crystal display panel. A plurality of gate lines and a plurality of data lines are provided at a liquid crystal display panel. A gate driver supplies a gate pulse to the plurality of gate lines. A data driver supplies a positive polarity gray scale level voltage and a negative polarity gray scale level voltage to the plurality of data lines. A controller controls a common voltage level supplied to the liquid crystal display panel in accordance with a supply point of a gate pulse.

Abstract: A transflective liquid crystal display includes a plurality of pixels. Each pixel includes a plurality of primary color sub-pixels and a brightness-enhancing sub-pixel. The reflective region of the transflective liquid crystal display is formed only on the brightness-enhancing sub-pixel.

Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes a substrate, a plurality of pixels arranged in a matrix on the substrate where each pixel includes a switching element, a plurality of gate lines that are connected to the switching elements and extend in a row direction, and a gate driver that is connected to the gate lines and is formed on the substrate as an integrated circuit. In the liquid crystal display, the gate driver includes a first region and a second region that is not aligned with the first region.

Abstract: Provided is a liquid crystal display device that can be produced at low costs, can achieve miniaturization, and can offer clear virtual images. The liquid crystal display device is provided with: a frame body that is so disposed as to cover a top face of a liquid crystal cell, that has a first opening so formed as to face the top face of the liquid crystal cell, and that has a picture frame-shaped member formed around the first opening; a frame that is fixed to the frame body and that has a second opening so formed as to face a back face of the liquid crystal cell; and a light source that illuminates the liquid crystal cell via the second opening of the frame. Here, a top face of the picture frame-shaped member of the frame body is so designed that light is diffusely reflected therefrom.

Abstract: It is possible to eliminate the blue tone in the black color display in the OCB liquid crystal display device. A liquid crystal display cell (110) includes an opposing substrate (130) having an opposing electrode (Ecom), an array substrate (120) having pixel electrodes of the respective colors (dpixR, dpixG, dpixB), a liquid crystal layer (140) arranged in a bend-arrangement and sandwiched between the opposing substrate (130) and the array substrate (120), and red, green, and blue filter layers (CF(R), CF(G), CF(B)) arranged on one of the substrates. The maximum voltage is applied when performing black color display on the display screen. At least the maximum voltage of the pixel electrode for blue color dpixB applied to the opposing electrode (Ecom) is made different from the maximum voltage of the pixel electrodes of the other colors applied to the opposing electrode (Ecom).

Abstract: A multi-domain LCD panel includes data lines, scan lines and pixels. Each pixel includes first and second sub-pixels respectively having first and second storage capacitors. A first data switch is selectively coupled to a first terminal of the first capacitor and one of the data lines. A second data switch is selectively coupled to a first terminal of the second capacitor and one of the data lines. First and second bias lines are respectively coupled to second terminals of the first and second capacitors. When a corresponding scan line is enabled, the first and second data switches turn on such that a signal on the data line is transmitted to the first and second sub-pixels. After the scan line is disabled, levels of the first and second bias lines are changed such that pixel voltages of the first and second sub-pixels differ from each other.

Abstract: An active matrix liquid crystal display device has an array of picture elements (12), each comprising a picture element electrode (14) and a switching device (16), addressed by crossing sets of selection (row) and data (column) address conductors (18,20), and a set of supplementary connection lines (30) extending in the direction of the data address conductors (20) and connected to respective ones of the row address conductors (18) enabling addressing of the array from one side or opposed sides. Each picture element includes a storage capacitor (22) connected to its picture element electrode and a capacitor line (40) shared by picture elements in the same row. The selection conductor of one row of picture elements is coupled to a respective capacitor line associated with a different row, for example via a connection line (45) at their ends, whereby each connection line is connected to a respective selection conductor for the row of picture elements and the capacitor line for another row coupled thereto.

Abstract: An active matrix electroluminescent display device has a shorting transistor (30) connected between the gate and drain of the drive transistor (22). Means (42) is provided for measuring a voltage on the data line (6). The shorting transistor (30) can be used to discharge the voltage on the gate of the drive transistor (22) until it switches off. By storing the resultant voltage on the data line (6) through an address transistor (16), the data line is used as one of the control/measurement lines for the threshold measurement.

Abstract: An array substrate includes a base substrate and a plurality of pixels on the base substrate. Each pixel includes a data line, first and second gate lines, first to third switching devices, and first and second pixel electrodes. The first and second gate lines cross the data line, and the second gate line is spaced apart from the first gate line. The first switching device is electrically connected to an adjacent gate line corresponding to an adjacent pixel. The second switching device is electrically connected to the data line and the first gate line. The third switching device is electrically connected to the data line and the second gate line. The first pixel electrode is electrically connected to the first and second switching devices, and the second pixel electrode is electrically connected to the first and third switching devices. The second pixel electrode is spaced apart from the first pixel electrode.

Abstract: A liquid crystal display device that displays an image by inputting n (n is a natural number) bit digital signals has n memory circuits in each pixel. The n memory circuits store n bit digital signals, which are converted into corresponding analog signals by a D/A converter provided in each pixel so that the analog signals are inputted to a liquid crystal element. Therefore, when a still image is to be displayed, the stored digital signals are repeatedly used once the digital signals are written in the memory circuits. During the still image is displayed, a source signal line driving circuit and other circuits can stop their driving. Power consumption of the liquid crystal display device thus can be reduced.

Abstract: A pixel circuit having a function of compensating for characteristic variation of an electro-optical element and threshold voltage variation of a transistor is formed from a reduced number of component elements. An input signal is sampled from a signal line so as to be held in a holding capacitor. The threshold voltage of the drive transistor is imparted to the holding capacitor in order to cancel an influence of the threshold voltage.

Abstract: A common voltage generation circuit includes a common voltage adjusting circuit adjusting a level of a common voltage in response to a compensation signal and providing the adjusted common voltage to a liquid crystal panel, and a common voltage compensating circuit including a resistor producing potential differences between the adjusted common voltage and each of the positive and negative polarity data voltages, a first voltage detector detecting a potential difference between the adjusted common voltage and the negative polarity data voltage, a second voltage detector detecting a potential difference between the adjusted common voltage and the positive polarity data voltage, and a voltage comparator comparing output signals of the first and second voltage detectors and feeding the compensation signal back to the common voltage adjusting circuit.

Abstract: A liquid crystal display including a substrate, first and second rows of pixels each formed on the substrate and including a plurality of pixels, a first gate line extending in a row direction on the substrate and connected to the first row of pixels, a second gate line extending in the row direction on the substrate and connected to the first and second rows of pixels, a third gate line extending in the row direction on the substrate and connected to the second row of pixels and first and second data lines extending in a column direction on the substrate to transmit data voltages to a pixel group consisting of three columns of pixels.

Abstract: A liquid crystal display apparatus is disclosed which can prevent occurrence of flicker regardless of display modes. The apparatus includes a liquid crystal modulation element which includes a liquid crystal layer between a first electrode and a second electrode, a controller which controls a potential difference to be applied between the first and second electrodes. The apparatus operates in first and second modes, which are different in the light amount entering the element. A memory stores first information for the first mode and second information for the second mode as controlling information on a potential difference between the electrodes for suppressing flicker within a certain range. The controller controls the potential difference between the electrodes based on the first information when the first mode is set and controls the potential difference between the electrodes based on the second information when the second mode is set.

Abstract: In an embodiment of the invention for an OCB (Optically Compensated Bend)-mode liquid-crystal display (LCD) device, retardation and/or a predetermined voltage range, from which a voltage applied to pixels in a viewing area is selected, is set for the each pixel or for the pixels in each region of the viewing area such that: the luminance on each pixel monotonously increases or decreases with increase of voltage in the predetermined voltage range; the luminance in central portion of the viewing area becomes minimum at black displaying.

Abstract: A display device is proposed in which scan line driver circuits are not disposed on opposite sides of a scan line, but one end of the scan line is driven by a scan line driver circuit, while the other end of the scan line is driven by a scan line auxiliary circuit which has a significantly smaller circuit scale and lower power consumption than the scan line driver circuit. The scan line auxiliary circuit is controlled with a selection pulse of the scan line or a signal of the scan line driver circuit, and is electrically connected to a fixed potential through a transistor. When a potential of the scan line is switched by the scan line driver circuit, the scan line auxiliary circuit operates so that the scan line is driven from its opposite ends.

Abstract: There is provided a liquid crystal display control device which can display pictures in a magnification mode by using only a memory having low-speed access and a low storage capacity. When a video signal has intermediate resolution or less, the enlargement processing is performed by a frame memory, a line memory and an enlargement processing control circuit. If the input operation and the output operation to and from the frame memory are synchronized with each other, it is sufficient for the frame memory to have a storage capacity of two lines. When the video signal has the same high resolution as a liquid crystal display panel, the video signal is output through a gate circuit to a display timing generating circuit, and it is displayed in a through mode. In this case, no processing is performed by the frame memory or the like.

Abstract: A timing controller for a liquid crystal display device includes an error detection module that detects an error in signals input from an external source and generates a data signal based on the error in the signals, so as to display the data signal on a liquid crystal panel for a predetermined time period. Thus, the liquid crystal display device stably displays the data signal while compensating for the error in the input signals, thereby improving the image quality of the liquid crystal display device.

Abstract: A timing controller includes an interface controller that reads out a current identification code and current address information of the current identification code. A data comparator compares a previous identification code stored in a memory provided in the timing controller with the current identification code. If the current identification code is different from the previous identification code, the interface controller reads out current parameter data corresponding to the current identification code from the memory and a data processor processes image data by using the current parameter data. The timing controller recognizes the update state of the parameter data stored in the memory and processes the image data by using the updated parameter data.

Abstract: A shift register includes a signal generating circuit for generating an output signal at an output end of the shift register according to a first clock signal while the signal generating circuit is turned on; a driving circuit, electrically coupled to the signal generating circuit, for generating a driving signal to control the signal generating circuit according to an input signal received from an input end of the shift register; a feedback circuit, electrically coupled to a next stage shift register, for transmitting a control signal while the feedback circuit is turned on by the next stage shift register; and a control switch, electrically coupled to the signal generating circuit and the feedback circuit, for turning off the signal generating circuit while the control switch is turned on by the control signal from the feedback circuit.

Abstract: A liquid crystal display (LCD) having a working and a redundant shift register for driving the gate lines of the display. A plurality of repair lines RL1-RLn run in parallel with the plurality of gate lines GL1-GLn between the working shift register whose stages are arranged to one side of the display and the redundant shift register whose stages are arranged on the opposite side of the display. Initially the repair lines are not connected to either of the shift registers and the gate lines are only connected to the outputs of the working shift register. Both the working and the redundant shift register are connected to receive the same input driving signals. When a defect is discovered in the working shift register, a laser beam is used to disconnect the output of the defective shift register stage from its gate line.

Abstract: A shift register includes a first transistor connected between an output terminal and a first clock terminal, a second transistor connected between the output terminal and a first power terminal, and an inverter in which a first node to which the gate of the first transistor is connected serves as an input node and a second node to which the gate of the second transistor is connected serves as an output node. The inverter has third and fourth transistors connected in series between the second node and a first power terminal, both having their gates connected to the first node, a fifth transistor connected between the second node and a third power terminal having its gate connected to the third power terminal, and a sixth transistor connected between a fourth power terminal and a third node serving as a connection node between the third and fourth transistors. The sixth transistor has its gate connected to the second node.

Abstract: An output buffer with an improved output deviation and a source driver of a flat panel display which employs the output buffer wherein the output buffer includes a first input terminal to which a first differential input signal is applied, a second input terminal to which a second differential input signal is applied, an output terminal that generates an output signal based on the second differential input signal and feeds back the output signal to the first input terminal as the first input signal, a first power supply terminal to which a first power supply voltage is applied, a second power supply terminal to which a second power supply voltage is applied, and an amplification unit that amplifies a difference between the first differential input signal and the second differential input signal, pulls up the output signal to the first power supply voltage or pulls down the output signal to the second power supply voltage, and includes a plurality of transistors.