Abstract: Unevenness detecting apparatus for compensating for threshold voltage and method thereof is provided with a plurality of scan lines and a plurality of data lines and a pixel circuit arranged in each point which the scan lines and the data lines are intersected. The unevenness detecting apparatus for compensating for the threshold voltage and method thereof may accurately sense a state of minute unevenness such as fingerprints by using an active element (e.g., TFT) as an element of which pixel circuit is composed.

Abstract: There is provided a motion-adaptive grayscale level converter section between a video signal source and a pixel array. The pixel array includes a liquid crystal cell of normally black and vertically aligned mode. The motion-adaptive grayscale level converter section determines based on information from a decoder section whether the pixels of an image represented by a video signal is in a moving image area. If a pixel is in a moving image area, the motion-adaptive grayscale level converter section changes the grayscale level data representing the grayscale level of the pixel so that there is no darker grayscale level than a predetermined first grayscale level. The resultant data is output as a video signal. Accordingly, we can provide a liquid crystal display capable of easing image quality degradation due to insufficient response when displaying a moving image while maintaining the contrast ratio achieved for a still image display.

Abstract: Disclosed are driving circuit and method which are used in an Organic Light Emitting Diode (OLED), and more specifically to a driving circuit of an organic light emitting diode and a driving method thereof which use a thin film transistor (TFT) as an active device. The driving circuit and method can uniformly produce luminance of the light emitting element because the driving current is produced by compensating the unevenness of threshold voltage of the active device. Further, the variance of the threshold voltage Vth due to deterioration of the transistor produced according as the driving circuit of the OLED is utilized for a long time is also compensated, thereby increasing life of the display device which applies the driving circuit of the OLED.

Abstract: An image display device is provided. The image display device has: an image display medium where charged particle groups are sealed between a pair of substrates at least one of which has translucency and which are opposed to each other with a space therebetween, and display density is changed by transfer of the charged particle groups between the pair of substrates according to an electric field formed by a voltage applied between the substrates; a temperature measuring unit that measures a temperature of the image display medium; a voltage applying unit that applies, between the substrates, a driving voltage according to the temperature of the image display medium measured by the temperature measuring unit, based on a predetermined voltage applying condition corresponding to the temperature of the image display medium, in order to display an image with predetermined display density on the image display medium.

Abstract: A plasma display apparatus and a driving method thereof are provided. The apparatus includes: an electrode pair having a first electrode and a second electrode, and a third electrode intersecting with the electrode pair; and a first electrode driver, a second electrode driver, and a third electrode driver for applying a driving signal to the respective electrodes, wherein the first electrode driver applies a waveform ramping-up up to a reset voltage during a reset period and falling down to a base voltage substantially without a ramp down.

Abstract: The present invention is capable of preventing the execution of a process, which a user does not intend to perform, when the position and size of each operation button image displayed on a screen are changed in accordance with a change in the aspect ratio of images. An aspect-ratio monitoring unit 51 monitors a change in the aspect ratio of moving images to be played back. A screen display control unit 52 controls a method for displaying moving images displayed on a display on the basis of the determined aspect ratio. A button display control unit 53 changes the size of each operation button to be displayed superimposed on the images displayed in the display. A sensitive area setting unit 54 sets an area (sensitive area) of a touch panel. An operation determining unit 55 determines which operation button is operated by the user.

Abstract: 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 electrode, a first transistor that is turned on when a corresponding scanning line is selected to supply a data signal from a first data line to the pixel electrode, and a second transistor that is turned on when another scanning line than the corresponding scanning line is selected prior to the corresponding scanning line to supply a data signal from the first data line or a data line different from the first data line to the pixel electrode, a scanning line driving circuit that selects the plurality of rows of scanning lines according to a predetermined sequence, when one scanning line is selected, applies a first voltage so as to turn on the first or second transistor, when the selection ends, applies a second voltage so as to turn off the first and sec

Abstract: A multi-display (e.g., dual-display) driving circuit includes a first display driving circuit configured to receive a first display signal and a second display signal from an external source (e.g., CPU) through a first interface, and to drive a first display panel in response to the first display signal and to output the second display signal through a second interface of the first display driving circuit. The second display signal is transmitted via the second interface to a second driving circuit configured to drive a second display panel. Therefore, the complexity of the wiring (e.g., through a hinge of a folding phone, and between a CPU and first and second displays) of the multi-display device may be reduced, and the electromagnetic interference (EMI) characteristics of the multi-display device may be enhanced.

Abstract: A control signal for removal of an afterimage from an active matrix display device is generated after the removal or disconnect of power from the device. A detector circuit receives a first voltage from a first voltage source and a second voltage from a second voltage source, and outputs a detection signal when either one of the first and second voltages drops to a given voltage level. An output circuit which receives the detection signal and outputs the control signal for removal of the afterimage from the active matrix display device.

Abstract: Apparatus for compensating for a threshold voltage of a driver element having gate and drain electrodes which controls current flowing in a light emitting element effective in an on and off state. A capacitor is disposed between the gate electrode and a drain electrode when the light emitting element is in the on state emits light and when the light emitting element is in the off state, applying a voltage to the gate and the source of the driver element and a threshold voltage between the gate and drain electrodes is detected and stored in the capacitor, by writing a signal voltage closer to a potential which causes the driver element to turn off than the potential supplied to the gate electrode of the driver element when detecting a threshold value, the signal voltage being superimposed on the threshold voltage without losing the threshold voltage of the driver element.

Abstract: Systems for displaying images are provided. In this regard, a representative system incorporates a signal driving circuit that includes a plurality of PMOS shift registers connected in series and controlled only by a first clock signal and a second clock signal, wherein the PMOS shift registers are operative to output corresponding driving pulses in turn after receiving a start pulse.

Abstract: The present invention relates to a method and an apparatus for controlling the power level and/or the contrast in a display device having a plurality of luminous elements corresponding to the colour components of the pixels of a picture, wherein the luminance generated by each of said luminous element is based on the intensity of the signal supplied to the luminous element and the power level and/or contrast for each picture is controlled by adjusting the intensity of the signal to be supplied to each luminous element. The invention is applicable to organic light emitting displays (OLED). According to the invention, the intensity of the signal to be supplied to each luminous element is based on reference signals and the adjustment of the signal intensity is made by adjusting the level of the reference signals.

Abstract: A method of operating a display includes deriving first pixel data for overdriving pixel circuits of the display from initial gray levels to target gray levels based on values in the first and second lookup tables, rendering the second lookup table unavailable in memory in response to a change in a temperature of the display, and deriving second pixel data using the first lookup table for overdriving the pixel circuits when the second lookup table is unavailable in the memory.

Abstract: A liquid crystal display device includes an integrated circuit, a signal line, an inspection line and a signal generator. The integrated circuit drives a liquid crystal display panel. The signal line applies a driving signal to the integrated circuit. The inspection line detects the driving signal inputted to the integrated circuit. The signal generator supplies a compensation signal corresponding to the detected driving signal from the inspection line.

Abstract: A dustfree and waterproof rolling-ball optical mouse includes a concave housing; a rolling ball movably engaged with the concave housing; a dustproof gasket fixed on the concave surface of the concave housing; a leakage hole of a conduit defined in a center of the concave surface of the concave housing; an aperture for allowing light through which is eccentrically defined in the bottom of the concave surface of the concave housing; and a waterproof tab formed around the edge of the aperture.

Abstract: Described herein are power conservation techniques that reduce power consumption for an electronics device including a display. The techniques divide video information for display into white and non-white video information. The white video information is altered such that the alteration decreases the amount of power required to display the white video information. The altered white video information and non-white video information are then visually output together. White-based power conservation as described herein may be performed while a person uses the electronics device, which reduces power consumption continually during usage.

Abstract: A display with low power consumption using a memory-incorporated pixel system capable of refreshing the image signal memory and updating an image without causing a flicker. Each pixel arranged in matrix has, at an intersection between the signal line and the scan line, a first transistor and a second transistor to drive the electrooptical medium. The second transistor has its gate connected with the image signal memory which in turn is connected to the reference voltage line. There is a parasitic capacitor between the gate of the second transistor and the scan line. The gate of the second transistor is also connected with an added capacitor. Further, the second transistor is connected with a holding capacitor and also has a parasitic capacitor.

Abstract: A level shift circuit, a shift register, and a display device in which circuit operation is resistant to influence of variations in characteristics of elements such as transistors.

Abstract: A computer system includes a holder attached to a housing of a pen-based computer. The holder may comprise a number of alternative materials, such as woven and non-woven sheet material. The holder may have a plurality of loop members configured for retaining a stylus or a pen. The holder may have a visual indication system for assisting the user to guide the pen into the holder. The holder may be removably attached to the housing. A computer system includes a rotatable holder attached to the housing of pen-based computer. An angle of rotation of the holder may be reported to the computer for display.

Abstract: A pixel driving method applied to a flat panel display is provided. In a first time period, an Nth scan line provides a first scan voltage to a pixel row to conduct the corresponding thin film transistors (TFT). Also, an N+1th scan line provides a second scan voltage through the conducted TFTs to the corresponding first switches to conduct the first switches, and then a number of first data voltages of the corresponding data lines are outputted to the corresponding first pixel electrodes. The absolute value of the difference between the first scan voltage and the second scan voltage is not smaller than a threshold voltage of each TFTs.