Abstract: A plasma display panel comprises a front glass substrate 1 and a back glass substrate 4. A plurality of row electrode pairs (X, Y) regularly arranged in a column direction, each extending in a row direction to form a display line, and a dielectric layer 2 covering the row electrode pairs (X, Y) are provided on an inner surface of the substrate 1. A plurality of column electrodes D are provided on an inner surface of the substrate 4, and regularly arranged in the row direction, each extending in the column direction to intersect with the row electrode pairs (X, Y) to form discharge cells C in a discharge space at the intersections. A recess groove 12a is formed in a portion of the dielectric layer 2 opposite a discharge gap g between paired row electrodes X and Y constituting the row electrode pair (X, Y), so that the dielectric layer 2 has a thickness in the portion opposite the discharge gap g smaller than that in portions on both sides of the portion opposite the discharge gap g.

Abstract: Provision of a manufacturing method for forming lamination of a plurality of dielectric layers on a substrate of a plasma display panel. A forming process for forming a photosensitive glass material layer and a patterning process for exposing required regions of the resulting photosensitive glass material layer to light are repeated in each formation of a first photosensitive glass material layer L1 and a second photosensitive glass material layer L2. After completion of the individual forming process and the individual patterning process for each of the first and second photosensitive glass material layers L1 and L2, a developing process for removing the unexposed regions and a burning process following the developing process are each performed on both of the first and second photosensitive glass material layers L1 and L2 together.

Abstract: A plasma display panel comprises a plurality of row electrode pairs (X, Y) and a dielectric layer 12 covering the row electrode pairs (X, Y) provided on a front glass substrate 10, and also column electrodes D provided on a back glass substrate 13 to intersect with the row electrode pairs (X, Y) so as to form display discharge cells C1 in a discharge space at the intersections. A discharge area C2 is formed between the adjacent display discharge cells C1 in the column direction to provide for a discharge created between the back to back row electrodes X and Y of the adjacent row electrode pairs (X, Y). A recess groove 12A is formed in a portion of the dielectric layer 12 opposite each discharge area C2.

Abstract: In a surface-discharge-type alternating-current plasma display panel, a discharge cell is divided into two cells: a display discharge cell C1 providing for a sustaining discharge between transparent electrodes Xa, Ya of row electrodes X, Y; and an addressing discharge cell C2 which is opposite a bus electrode Yb of the row electrode Y, giving rise to an addressing discharge in association with a column electrode D, to provide for the addressing discharge between the bus electrode Yb of the row electrode Y and a column electrode D. The display discharge cells C1 and the addressing discharge cells C2 of the discharge cells are interposed in alternate positions in the column direction so as to arrange the addressing discharge cells C2 in a back-to-back position in the column direction.

Abstract: In a manufacturing process for a plasma display panel, a protective layer 3 formed of MgO is placed in a non-display area of a display space in which introduction of a discharge gas is provided, so as to face the discharge space. Bus electrodes Xb and Yb of row electrodes X and Y are increased in length to continue extending from inside a display area of the plasma display panel into the non-display area, and thus constitute a pair of discharge electrode for causing a discharge in the non-display area of the discharge space in which the introduction of the discharge gas is provided. When the discharge gas is introduced into the discharge gas, a voltage is applied between the discharge electrodes to cause an aging discharge.

Abstract: A piezoelectric film loudspeaker comprising a diaphragm having a flexible piezoelectric film and electrodes formed on the both surfaces of the flexible piezoelectric film and a frame for supporting a side of the diaphragm, wherein said respective electrodes disposed on the both surfaces are divided into a plurality of sections. Each area of the divided electrodes is formed differently from one another, and each curvature of the film in the divided section also is formed differently from one another. Thus, the piezoelectric film loudspeaker having a predetermined area can have a broad band.

Abstract: A method of driving a plasma display panel minimizes occurrence of complementary color ghost images (afterimage). Reset pulses are applied to a plurality of row electrode pairs to trigger a reset discharge in all discharge cells. The reset pulses include a first reset pulse that is applied to one of the row electrodes of each row electrode pair and a second reset pulse that is applied to the other row electrode at the same time that the first reset pulse is applied and has a polarity opposite that of the first reset pulse. The first and second reset pulses have different voltage levels.

Abstract: The present invention intends to provide a display position control apparatus which can prevent a position control signal to control a display position of an image from being unstable and can display the image with high image quality. A delay signal having a phase difference in a match state with reference to a vertical sync signal is generated. Whether a phase relation between the vertical sync signal and a horizontal sync signal is in a mismatch state is detected. When it is detected that the phase relation is in the mismatch state, a display position control signal is generated on the basis of the vertical sync signal and the delay signal. When it is not detected that the phase relation is in the mismatch state, the display position control signal is generated on the basis of the vertical sync signal and the horizontal sync signal.

Abstract: The plasma display panel (PDP) unit of the present invention comprises a PDP drive circuit for supplying drive power to a display panel and a control portion for controlling the drive power. The control portion includes a power correction value generating circuit for generating a power correction value and the PDP drive circuit contains a voltage adjusting circuit for outputting the drive power based on the power correction value.

Abstract: A plasma display panel comprises a plurality of row electrode pairs (X, Y) provided on a front glass substrate 10, a plurality of column electrodes D provided on a back glass substrate 13 and each intersecting the row electrode pairs, and discharge cells C which are defined in a discharge space S to correspond to the respective intersections. The row electrode Y of each row electrode pair (X, Y) has transparent electrodes Ya each constructed by a leading member Ya1 and a base member Ya2. The column electrode D is provided with enlargement members Da, having a width in a row direction larger than that of the base member Ya2, in a position opposite to the leading member Ya1.

Abstract: This invention provides a drive method and an drive apparatus for a display panel that continuously maintain good image quality when the display panel is used for a long period of time.

Abstract: A drive circuit of plasma display panel (PDP) unit including at least a pair of electrodes and discharge cells connected thereto, further comprises a first path having a first switch and a first coil for applying voltage to the discharge cells; a second path having a second switch and a second coil for expelling the voltage applied to the discharge cells; and electric charge accumulating devices connected to the first path and the second path, wherein the inductance value of the second coil is larger than the inductance value of the first coil.

Abstract: A PDP driving apparatus having a resonance driver of a PDP electrode for shortening a time required to display an image since the power-up. A power collecting capacitor included in each electrode resonance driver is charged rapidly to a predetermined potential upon power-up of the PDP driving apparatus by allowing each electrode resonance driver to drive electrodes by means of excitation. Also, while the power collecting capacitor included in the row electrode pair driver is charged, charge driving pulses in-phase and of the same polarity are applied respectively to corresponding two electrodes to drive these electrodes by means of excitation.

Abstract: A plasma display panel driving method and a plasma display apparatus which can reduce power consumption. A selective discharge is generated at least once for selectively setting each of discharge cells of a plasma display panel either to a lit discharge cell state or to an unlit discharge cell state in accordance with a video signal. In this case, the number of times the selective discharge is generated is changed in accordance with the power consumption associated with the selective discharge.

Abstract: The present invention relates to a display device that has a good-quality image display while suppressing dither patterns which arise upon the execution of dither processing. The values of dither coefficients allocated to the display cells which emit at least one color within pixels are made different from the values of dither coefficients allocated to other display cells which emit another color within the pixels.

Abstract: It is an object of the invention to save space, improve workability and visible appearance when a display apparatus is fixed to a wall. A display panel of the display apparatus is encompassed by a front case from the front and by a rear case from the back. The display apparatus includes a first attachment structure capable of attaching/detaching the front case on the front side, and a second attachment structure A formed on the four corners of the rear case for attaching the display apparatus to the wall. The attachment operation for attaching the display apparatus to the wall is performed while the front case is detached. After the completion of attaching the display apparatus on the wall, the front case is attached by means of the first attachment structure to prevent the second attachment structure A from being exposed to the front.

Abstract: A plasma display panel for color displaying is provided which is so formed that it is possible to improve the contrast and color purity of the display panel while at the same time controlling the brightness drop to a minimum level. In particular, it is possible to effectively inhibit a contrast drop usually caused due to neon emission. In practice, an optical filter capable of attenuating light components each having a wavelength within a range of 560-590 nm is provided on the front side of the plasma display panel. Such plasma display panel includes an electric discharge space containing a discharge gas mainly comprising neon gas and xenon gas.

Abstract: An information record/playback machine includes a playback unit for reading a selected piece of information from a plurality of pieces of information recorded on a recording medium to play back the selected piece of information. The machine also includes a flag setting unit for preparing a flag indicating that the selected piece of information currently played should be deleted, in response to a command issued while the playback unit is playing the selected piece of information. The flag is attached to the selected piece of information. The machine further includes a display unit for displaying a list of all the pieces of information recorded on the recording medium except for the selected piece of information to which the flag is attached.

Abstract: A broadcast program recording apparatus and a recording method of a broadcast program, in which a broadcast program which a user watches periodically can be automatically recorded without performing a timer recording setting. Data of channel number, broadcast date, and broadcast time zone of the received broadcast program are additionally stored into a received program history memory in correspondence to each other. A channel number of a broadcast program having a broadcast date that is precedent to today's date by a predetermined number of days and a broadcast time zone that coincides with the present time is searched for from the received program history memory. A station selection control operation to control the receiving part is performed to receive a broadcast wave of the searched out channel number, to start the recording of the broadcast program received by the recording part.

Abstract: An object of the present invention is to provide a plasma display device that enables high-luminosity display while keeping consumption of power low. After causing reset discharge to form a wall charge in the dielectric layer of all discharge cells of a plasma display panel, pixel data are written by causing selective erasure discharge to erase, in accordance to pixel data corresponding to an input video signal, the wall charge formed in each discharge cell, and sustaining pulses, with a voltage value of at least 200 volts, are applied alternately to each row electrode of each row electrode pair of the plasma display panel to repeatedly cause sustained discharge to occur only in discharge cells having residual wall charge.