Abstract: The present invention describes a method and apparatus of driving a plasma display panel that can reduce dynamic contour. The plasma display panel includes a plurality of scanning lines (for example, 600 scanning lines). Further, a subframe is completed by the three successive steps of resetting, scanning, and sustaining of scanning lines. Moreover, a full frame picture includes a plurality of subframes (for example, eight subframes in a gray plasma display panel with 256 colors). Each subframe sustains according to a predetermined ratio to obtain a plurality of colors. The present invention characterized by: first, dividing the scanning lines into a plurality of groups. Then, sustaining each group of subframes according to a different order in a full frame picture.

Abstract: This invention relates to a driving method for reducing the dynamic image false contour for display panels, and more particularly, to a driving method that is useful in the display technique of plasma display panels in this method, the erase period of the driving signal is separated and a display electrode and a data electrode are utilized to compose a pair of erasing signals and thus realize the separated erasing signal periods. The present invention further provides a signal process circuit device of the driving method which comprises a plurality of scanning IC's including a plurality of connected transistor switches in order to achieve the division of erasing signal period in the mentioned driving method, It can prevent the abrupt changes of image brightness and the distortion of dynamic image false contour and effectively improve the moving picture quality when the dynamic image is moving.

Abstract: An alignment tool for assembling a rear plate and a frame of a flat display panel is introduced. The rear plate includes a front surface, a rear surface opposing to the front surface for adhering with the frame in an aligning process, and an alignment mark located at the front surface. The alignment mark has a predetermined thickness and is protruded from the front surface. The alignment tool includes a base, a clamp arm and an upper arm. The base further includes a base top surface and an alignment notch. The base top surface is used for contacting with the front surface of the rear plate and the alignment notch has at least two alignment sides for matching with the alignment mark. The clamp arm is protruded from the base, and the upper arm is protruded from the clamp arm and used for aligning with the frame. The upper arm includes an arm lower surface parallel to and spaced apart from the base top surface by a predetermined distance for forming an open space in between.

Abstract: In a device for the deflection of a light bundle generated by a light source, wherein this device has a nonmechanical deflection device in which the light bundle enters and exits at a different angle determined by a controlling variable, which angle depends on the wavelength of every light component in the light bundle, it is provided that an optically dispersively active system is provided behind the nonmechanical deflection device in the light propagation direction, wherein the angular dispersion of this system is dependent on the angle of the light bundle entering the system, wherein the angular dispersion compensates for the wavelength dependence of the angle of the nonmechanical deflection device determined by the controlling variable.

Abstract: An organic light-emitting device wherein the cathode (4, 5) comprises a first layer (5) of a conducting material and a second layer (4) of a conductive material having a work function of at most 3.7 eV and wherein the second layer is substantially thinner than the first layer, having a thickness of at most 5 nm.

Abstract: The contrast of an electroluminescent display using an organic EL layer is improved by using a circular polariser in front of the surface. The polariser causes ambient light to be absorbed, while allowing transmission of emitted light and therefore improves the contrast of the display.

Abstract: The present invention relates to a plasma display device. The plasma display device comprises a rectangular plasma display panel for displaying images, a rectangular side frame installed along four sides of the plasma display device, a rectangular rear plate vertically installed on a rear aspect of the four sides of the side frame for protecting the plasma display device, and a supporting rack installed inside the side frame between the plasma display panel and the rear plate comprising a top beam, a bottom beam, and a plurality of vertical columns vertically installed between the top beam and bottom beam. The vertical spaces between neighboring vertical columns and the vertical spaces between the vertical columns and the left and right bars of the side frame are heat dissipation channels for directing the heat generated from the rear side of the plasma display panel upward and away from the plasma display device.

Abstract: The present invention relates to a plasma generation method of a plasma display panel. The plasma display panel comprises a first substrate and a second substrate positioned in parallel with each other, an ionizable gas filled between the two substrates, and a plurality of first, second, third and fourth electrodes installed on the two substrates. The first and second electrodes are alternately installed in parallel on the first substrate. The third electrodes are installed on the second substrate perpendicular to the first and second electrodes. An area between one of the third electrodes and a pair of neighboring first and second electrodes define a display unit for generating plasma from the ionizable gas in the display unit and driving the plasma. The third electrode of each display unit is used for determining if the plasma within the display unit should remain.

Abstract: A fiber optic display sign has an optical system with enhanced light efficiency so that the display system is suitable for outdoor use. A number of fiber optics have light receiving ends arranged in a compact bundle for receiving an image from an image generator, the fiber optics coupling the image to the output ends thereof for display. An array of lenses is positioned adjacent the output ends of the fiber optics for directing or aiming the light from the fiber optics to control the viewing angle of the image displayed. The array of lenses may be fixed with respect to the output ends of the fiber optics or the lens array may be movable with respect thereto so as to vary the viewing angle. The image generator employs a light source formed of a densely packed array of white light emitting diodes to provide enhanced brightness.

Abstract: An electroluminescent device is described which utilizes a “memory effect” which allows a device to be turned on by a turn on voltage and then for the voltage to be reduced without a reduction in the light output. The present electroluminescent device incorporates a semiconductive conjugated polymer layer together with a light dependent voltage regulating layer the conductivity of which varies with light incident thereon from the semiconductive conjugated polymer layer. An electroluminescent device using a semiconductive conjugated polymer layer is relatively simple to manufacture as compared with earlier devices.

Abstract: A method for driving a plasma display is provided. The method includes the steps of (a) executing a reset discharge for all cells of the odd-numbered scanning line of the plasma display, (b) executing an addressing discharge for all cells of the odd-numbered scanning line, (c) executing a sustaining discharge for all cells of the odd-numbered scanning line, (d) executing a reset discharge for all cells of the even-numbered scanning line of the plasma display, (e) executing an addressing discharge for all cells of the even-numbered scanning line, and (f) executing a sustaining discharge for all cells of the even-numbered scanning line of the plasma display. The method is used to reduce the abrupt change of image brightness and the dynamic false contour of the image, and further improve the quality of the moving pictures.

Abstract: In an apparatus for generating an image on a screen by illuminating image points in a plurality of partial images by light bundles, wherein the apparatus has at least one deflection device for deflecting a plurality of light bundles in respectively associated image points of the individual partial images, and a control device for controlling the intensity of the light bundles depending on the brightness of the respective image point to be illuminated, and optics between the screen and deflection device for deflecting the light bundles in a partial image associated with the respective light bundle, it is provided that the optics include an entrance pupil which is spread out over an extended area and an exit pupil which is much smaller in comparison to the entrance pupil, and in that a plurality of deflection devices for deflecting a light bundle associated with a partial image are provided in or near the entrance pupil which is spread out over an extended area.

Abstract: Precursor materials useful for making organic electroluminescent devices such as anthracene derivatives having the structure: ##STR1## R.sub.40 -R.sub.43 and R.sub.44 -R.sub.47 are selected independently from the group consisting of hydrogen, alkyl, aryl, heteroalkyl, heteroaralkyl, nitro, cyano, hydroxy, alkoxy, aryloxy, thio, alkylthio, arylthio, amino, halogen, dialkylamino, diarylamino, diaralkylamino, arylamino, alkylamino, arylalkylamino, carbonyloxy, carbonylalkoxy, carbonylalkyloxy, alkylcarbonyloxy, arylcarbonyloxy, alkoxylcarbonyloxy, sulfonyl, sulfonyloxy. R.sub.48 and R.sub.49 are selected independently from the group consisting of trialkoxysilyl, dialkoxysilyl, trichlorosilyl, dichlorosilyl, heptachlorotrisiloxy, and pentachlorodisiloxy.

Abstract: The present invention discloses a driving method utilizing a driving circuit for driving a plasma display unit of a plasma display panel. The plasma display unit is repeatedly charged for sustaining an image signal. The driving circuit comprises an inductor connected in parallel to two ends of the plasma display unit, a power supply for charging the plasma display unit and the inductor, a first switch connected between the power supply and the first end of the plasma display unit, a second switch connected between the first end of the plasma display unit and ground, a third switch connected between the power supply and the second end of the plasma display unit, and a fourth switch connected between the second end of the plasma display unit and ground. Each of the first and second switches comprises a transistor having a parasitic diode between the drain and source of each transistor. Each switch is switched on only when the potential difference between the source and drain of the transistor is 0V.

Abstract: A method for tailoring the viscosity of a conjugated polymer precursor, the method comprising synthesizing the precursor by a polymerization reaction and, during the polymerization reaction, applying a shear to the reactants of the polymerization reaction so as to define the viscosity of the precursor at a desired value.

Abstract: A plasma display panel (PDP) includes M address electrodes, N scan electrodes and N common electrodes orthogonal to the M address electrodes. The present invention is to provide with a common driving circuit for providing the N scan electrodes with a driving voltage. During a discharge sustain period of the PDP, the discharge sustain pulses pass through only essential function means rather than unnecessary function means in the common driving circuit, and thereby unnecessary power consumption occurring in the common driving circuit can be avoided. Low power consumption in the common driving circuit can reduce the heat accumulation in the PDP to assure the display quality of the PDP and alleviate the design regarding heat sink for the PDP.

Abstract: The present invention provides a driving circuit for driving a plasma display unit. The plasma display unit can be repeatedly charged for sustaining a display of an image signal. The driving circuit comprises two driving circuits, a control circuit, and a power supply. Each of the driving circuits comprises an inductor, two switches, and two diodes. Each of the switches comprises a transistor with a parasitic diode existed between a drain and source of the transistor. The plasma display unit is electrically connected between the two inductors. The control circuit is used for controlling the on and off states of the switches so that the power supply can repeatedly charge the plasma display unit through the two driving circuits.

Abstract: A front plate for a plasma display panel (PDP) and its modified fabricating method are provided using a backside exposure process and an appropriate processing sequence rearrangement to reduce the number of photomasks required and improve the accuracy of exposure and developing process. First, a light-shielding layer is patterned by performing a mesh printing process, or by performing an exposure and developing process using a first photomask, so as to form a light-shielding structure including black stripes and transparent electrodes' gaps. Next, using the light-shielding structure as a mask, a backside exposure and developing process as well as an etching process is performed to form a plurality of pairs of transparent electrodes on the substrate. Then, using a second photomask, another set of exposure, developing and etching processes are performed to form a plurality of pairs of metal electrodes on the corresponding transparent electrodes.

Abstract: A display comprises a light modulator defining an array of pixels arranged in rows (2) and columns (3) and addressable to select between at least an opaque state for each pixel and a transparent state for each pixel. The display includes a light emitting device arranged adjacent the light modulator to act as a light source for the display. The light modulator is a passive matrix liquid crystal display device and the light source is an electromumninescent LED. The light source is addressable to emit light from selected regions LER, each region overlapping at least a plurality of rows (2) of the light modulator. In this way, the problem of electrical cross-talk in the display is reduced.