Abstract: The invention provides a display device and a light adjusting method thereof capable of carrying out light adjustment effectively by the output control of a light source and, preferably, of effecting light adjustment according to color distribution of a displayed image. The display device of the invention that is capable of adjusting a displayed image by changing light flux can include a plurality of light sources having light emitting diodes, an image analyzing unit for outputting a light control signal for controlling the output of each of the light sources, based on an image signal of the displayed image, and a light control device for controlling the output of each of the light sources based on the light control signals.

Abstract: In an active matrix display device, such as AMLCD, having an array of pixels (P) addressed via sets of row and column conductors (14, 15) to which, respectively, selection and data signals are applied, each pixel comprises a plurality of sub pixels (P1-P4) which each have an associated switch, for example a TFT, (T1-T4) and which are addressed with data signals through a common switch (T1) coupled to a column conductor (15). Addressing the sub pixels through a common switch reduces the effective capacitance of the column conductor.

Abstract: A controller controls an electronic appliance. The electronic appliance has a display. The controller employs a video camera to photograph an image of a user and converts the image into a mirror image. The controller generates an operational image including operation buttons, overlays the operational image on the user's image, and displays the images on the display. In the displayed images, the user moves his or her hand onto one of the displayed operation buttons and bends the fingers of the hand to select the operation button. This selecting operation is detected by a detector of the controller, and information about the selected operation button is supplied to a processing unit, which outputs control signals corresponding to the selected operation button.

Abstract: Embodiments of an exemplary MEMS interferometric modulator comprise a movable layer and a fixed layer separated by an air gap. A driving scheme employs row/column actuation protocols which maintain voltages to the MEMS interferometric modulator that are above or below the voltage range necessary to place the MEMS interferometric modulator within a “hysteresis window” or “stability window.” Stable operation of the MEMS interferometric modulator is achieved by selecting mechanical design features that optimize the actuation and release times of the interferometric modulator. Some of the features affecting the release and actuation times include altering post spacing, altering internal stress or tension of the movable layer, altering the thickness or composition of the movable layer, altering the bulkiness of the tethers, perforating the movable layer and providing vias in the fixed layer.

Abstract: A photo detective LCD device includes a light pen. The light pen includes a body, a driving pulse generating module and a light generating module. The body has a pen shape, and an end of the body includes an opening through which light exits. The driving pulse generating module is disposed in the body and generates first and second driving power pulses having first and second frequencies, respectively. The light generating module generates first and second light in response to the first and second driving power pulses, respectively. The first and second light flickers in a third frequency and a fourth frequency, respectively. The power consumption is reduced, and the brightness of sensing light is enhanced. The light pen generates light having at least two different frequencies, and the display device recognizes light generated from the light pen effectively. Therefore, the display device may operate without failure.

Abstract: A display device includes a plurality of scanning lines, a plurality of signal lines, a plurality of pixel circuits and sensor circuits, a signal line drive circuit and scanning line drive circuit which drive the plurality of pixel circuits, and a precharge circuit and sensor control circuit which drive the sensor circuits. A filter subjects image data to an interpolation process to compensate for a gradation value of an output. In a signal processing section, the area of a light receiving area is calculated and it is determined that a light source is set in contact with a display screen.

Abstract: An apparatus for handwriting recognition has a touch-sensitive display screen providing a handwriting input area capable of detecting a handwritten user input. The apparatus also has a processing device configured to interpret the handwritten user input as a symbol from a plurality of predefined symbols. The handwriting input area includes a writing start area, and the processing device is configured to provide a visual indication of the writing start area on the display screen. The processing device is configured to interpret the user input as a symbol only if the user input starts within the writing start area.

Abstract: In a display device having driving circuits formed on the same substrate where pixels are formed, the lateral frame area of the display device is reduced. A gate signal line driving circuit is placed in parallel with a source signal line driving circuit, so that no driving circuits are provided in at least two opposing directions out of four directions with respect to a pixel region. With the above-described structure, the area the gate signal line driving circuit occupies in prior art is removed to reduce the width (side to side) of the display device. Therefore a display device that has a small frame area in the lateral direction can be provided.

Abstract: An active matrix electroluminescent display device has a current sampling resistor within each pixel in series with the display element. A feedback signal represents the voltage drop across the current sampling resistor and the pixel drive signals are modified in dependence on the feedback signal to control the current driven through the display element. In this way, threshold compensation is provided, whilst enabling a single voltage-driven drive transistor to be employed.

Abstract: Disclosed herein is an apparatus and method for driving a plasma display panel, wherein electromagnetic interference is minimized and stability is improved. According to the present invention, the apparatus for driving a PDP includes a plurality of scan electrodes and sustain electrodes, which are formed parallel to each other, and a scan driving unit for alternately supplying sustain pulses of the positive polarity and the negative polarity to the scan electrodes during a sustain period, wherein the sustain electrodes are connected to a ground voltage source, and thus always keep a ground voltage.

Abstract: A light emitting display includes a pixel circuit. The pixel circuit includes a power electrode line, a capacitor for charging a voltage corresponding to a data signal, a driving transistor for outputting a current corresponding to the voltage charged in the capacitor, and emit elements for emitting lights corresponding to the current output by the driving transistor. One or more emit control transistors are coupled between the driving transistor and the emit elements, and selectively applies the current output by the driving transistor to the emit elements. The power electrode line is provided at an area between the emit elements.

Abstract: A scanning-line selecting circuit is configured by connecting basic circuits with each other over plural stages. Each of the basic circuits includes a basic scanning-line driving circuit and a voltage raising circuit. A basic scanning signal is inputted into the basic scanning-line driving circuit, which, then, outputs a scanning signal. A charge pulse, a selecting signal, and a discharge pulse are inputted into the voltage raising circuit, which, then, drives the basic scanning-line driving circuit. Accordingly, in the basic circuits, there exists none of the problems of threshold-value shift and voltage lowering. This characteristic makes it possible to implement high efficiency and stable operation.

Abstract: Provided is a driving method for a plasma display panel capable of prolonging a life span of the plasma display panel and improving luminous efficiency thereof by preventing an accumulation of positive charges on an address electrode of the plasma display panel. For the purpose in the present invention, voltage pulses having different polarities and sizes are applied to a pair of sustain electrodes of a plasma display panel while sustaining a discharge for the plasma display panel.

Abstract: A low cost x-y digitizing system is described for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitizer includes a resonant stylus, an excitation winding for energizing the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined. A novel stylus design is described together with novel digitizer windings and novel excitation and processing circuitry.

Abstract: A image display device includes a driving unit that includes a first terminal and a second terminal, and controls current flowing through a light emitting unit based on a potential difference applied between the first terminal and the second terminal. The potential difference is higher than a predetermined drive threshold. The image display device also includes a threshold potential detecting unit that detects the potential difference; a luminance potential supplying unit that changes the potential difference to a value lower than the drive threshold by a luminance potential corresponding to a luminance of the light emitting unit; and a sweep potential supplying unit that controls the driving unit by supplying a sweep potential to the first terminal. The sweep potential is swept in a range between a value lower than the luminance potential and a value higher than the luminance potential.

Abstract: The present invention relates to an apparatus for driving a plasma display panel, and more particularly, to an apparatus for driving a plasma display panel including a scan driver. According to an embodiment of the present invention, an apparatus for driving a plasma display panel includes one switching device to apply a scan pulse per one Y-electrode wherein the switching device is turned on to apply the scan pulse to the selected Y-electrode and wherein other switching devices are turned off. By performing scan and sustain processes using one switching device only, the present invention reduces the costs and the volume of the scan driver. Specifically, by turning on the switching device corresponding to the selected channel only and by turning off the switching devices corresponding to other channels, the present invention minimizes power consumption.

Abstract: An image display device having a reduced data programming time. The image display device includes a plurality of pixel circuits, each said pixel circuit for displaying an image which corresponds to a data current, which is applied thereto. The image display device also includes a plurality of data lines for transmitting the data currents to the pixel circuits, and a plurality of scan lines for transmitting select signals to the pixel circuits. A driver applies a precharge voltage to a corresponding one of the data lines in response to a first control signal, and supplies the corresponding one of the data currents to the corresponding one of the data lines in response to a second control signal.

Abstract: A keypad having a first key and a second key is provided. The first key includes a first front body and a first back body. The first back body is disposed on the backside of the first front body. The edge of the first back body has a protruding portion. The terminal of the protruding portion is wider than the junction of the protruding portion and the edge of the first back body. The second key includes a second front body and a second back body. The second back body is disposed on the backside of the second front body. The edge of the second back body has an indentation corresponding to the protruding portion. The indentation exposes a part of the backside of the second front body for buckling up with the protruding potion tightly so that the first key and the second key are fastened together firmly.

Abstract: An electronic whiteboard having flexible membrane electromagnetic generating device, at least including an electronic whiteboard main unit having an input induction section, a recognition controlling circuit, a signal output device inside, a writing layer as surface, a bottom layer as casing body, and a frame around, and an input pen. Wherein the induction section is composed of a covering layer, an electromagnetic induction generating layer and a bottom support bracket layer, wherein the base layer of the electromagnetic induction generating layer is an insulated flexible membrane, the surfaces of which are printed with an electromagnetic induction receiving antenna array, and a flexible membrane electromagnetic induction generating layer is constituted, the output of that layer is connected to the recognition controlling circuit, and the input pen has an electromagnetic wave generating device.

Abstract: The present invention relates to a driving method and apparatus of a plasma display panel. The driving method including the steps of: checking whether or not a first input grayscale data can be expressed through a certain pixel on the panel; in case the first grayscale data cannot be expressed, outputting a second grayscale data adjacent to the first grayscale data; and respectively multiplying erroneous data corresponding to a difference between the first grayscale data and the second grayscale data with preset coefficient values to diffuse the multiplied result to a plurality of pixels adjacent to the pixel, wherein before the erroneous data are respectively multiplied with the preset coefficient values, a random value is multiplied to at least one coefficient value among the plurality of coefficient values.