Abstract: A method and circuit to control of a circuit for addressing at least one line electrode of a plasma display panel having, for each line, a line selection stage formed of two switches in series between two input terminals of the selection stage, the method including use of a first one of the two switches of the selection stage of each line to flow a current from or to an inductive element of the addressing circuit.

Abstract: A plasma display panel (PDP) device includes: a PDP including a plurality of panel electrodes; a driving circuit to generate a drive signal to drive the panel; and a flexible printed circuit (FPC) positioned between the panel and a driving board with the driving circuit implemented thereon and transferring the drive signal to the plurality of panel electrodes, wherein the FPC includes a plurality of FPC electrodes formed on a base film and compressed with the plurality of panel electrodes and a cover lay film stacked on the plurality of FPC electrodes and the base film, and a virtual extension line connecting end portions of two adjacent electrodes among the plurality of panel electrodes and the cover lay film are separated by a certain distance. Accordingly, a short phenomenon between adjacent electrodes among the plurality of panel electrodes can be prevented.

Abstract: An object of the present invention is to provide a method and device for reading an information code in which an information code displayed on a display can be read without increasing the circuit size of the display device. To read the information code displayed on the display in a predetermined area during each frame display interval, a synchronization signal synchronized with each of the frame display intervals is generated based on noise emitted from the display, and the information code is restored from a captured image signal obtained by capturing a screen of the display as an image in accordance with the synchronization signal.

Abstract: An address driving circuit includes a driving device unit and an energy recovery circuit. The driving device unit drives an address electrode to an address voltage or a reference voltage in response to driving control signals during an address period. The energy recovery circuit recovers a voltage charged to the address electrode in response to switching control signals such that a voltage of the address electrode transitions to the address voltage or the reference voltage via at least two intermediate voltages including first and second intermediate voltages during the address period.

Abstract: A plasma display device includes a scan electrode drive circuit including a sustain pulse generating circuit, which includes an electric power recovery capacitor, a first recovery switch and a first recovery inductor connected in series so as to form an electric current passage in which an electric current is allowed to flow from the electric power recovery capacitor to a scan electrode, a second recovery switch and a second recovery inductor connected in series so as to form an electric current passage in which an electric current is allowed to flow from the scan electrode to the electric power recovery capacitor, a first damper capacitor connected to a node between a diode of the first recovery switch and the first recovery inductor, and a second damper capacitor connected to a node between a diode of the second recovery switch and the second recovery inductor.

Abstract: There is provided a plasma display device capable of high luminous efficacy and stable driving for displaying images at various image display load factors. The plasma display device performs the sustain discharge for a light-emission display, and is configured to apply a sustain pulse voltage between a sustain electrode pair in a respective one of the plural discharge cells to generate a sustain discharge in a respective one of the following operating modes selected based upon use of the plasma display device: (a) generating a pre-discharge and then a main discharge; (b) generating a main discharge without a pre-discharge preceding the main discharge; and (c) switching between the mode (a) and the mode (b). The sustain voltage waveforms are used which compensate for an increase in voltage drop due to an increase in discharge current when the image display load factor is excessively increased.

Abstract: A plasma display apparatus and a method of driving the same are provided. The plasma display apparatus comprises a plasma display panel, a scan driver, and a data driver. The plasma display panel comprises a scan electrode, a sustain electrode, a first address electrode, and a second address electrode. The scan driver supplies a pulse to the scan electrode between a reset period and an address period. The data driver supplies a data pulse to the first address electrode and the second address electrode at different points of time.

Abstract: The present invention provides a method of driving a gas discharge display apparatus for displaying gray-scale display levels finer than those achieved by the conventional methods, and also to provide a gas discharge display apparatus with a driver capable of performing such a driving method. An opposed discharge between the sustaining electrode and the address electrode in addition to the conventional surface discharge is generated for the light emission from the fluorescent material in light emitting tubes. The method and the apparatus effect improvements in finer gray-scale display levels than those by the conventional methods.

Abstract: An image processing method includes the steps of detecting a dynamic range of input image data, performing resolution conversion processing to increase the number of grayscale levels of the input image data, and performing dithering processing to reduce the number of grayscale levels of each pixel of the input image data. The number of pseudo grayscale levels in the dithering processing is determined, based on a parameter indicating the level of the dynamic range and a parameter concerning the resolution conversion processing.

Abstract: A plasma display device which selectively generates address discharge in each display cell in accordance with pixel data based on a video signal in an address period, applies a sustain pulse between row electrodes forming each row electrode pair in a sustain period, and applies a wall-charge adjusting pulse between row electrodes forming each of said row electrode pairs in a period from an end of the address period to a beginning of the sustain period.

Abstract: An energy recovery circuit for a plasma display panel having a reduced number of components. The energy recovery circuit includes a source capacitor, an inductor, a panel capacitor and six switches. The circuit is designed so that the source capacitor, the inductor and two of the switches are shared in operation, thereby reducing the number of components.

Abstract: A driving method for a display including a source driver and at least one pixel is disclosed. The source driver is activated to provide a first data signal to the pixel. The first data signal includes a first pulse. The source driver is activated to provide a second data signal to the pixel. The second data signal includes a second pulse. The width of the first pulse is different from the width of the second pulse and a gray level is composed of the first and the second pulses.

Abstract: A composition for preparing a phosphor layer includes a phosphor, a binder, a solvent and an active carbon component. A plasma display panel includes the phosphor layer. The phosphor layer of the plasma display panel is formed by depositing the composition for preparing the phosphor layer and heat treating the deposited composition.

Abstract: A plasma display device in which noise of an electric signal and uncertainty of a power supply are prevented when a scan IC is packaged using chip-on-film technology. The plasma display device includes: a plasma display panel having pluralities of scan electrodes, sustain electrodes, and address electrodes; a chassis base disposed at the rear of the plasma display panel; a circuit unit insulated from the rear side of the chassis base by bosses and driving the plasma display panel; radiator plates provided at the rear of the circuit unit; chip-on-film (COF) packages formed at the rear of the radiator plates, electrically connecting the scan electrodes to the circuit unit, and including a scan integrated circuit (IC) to drive the circuit unit; and couplers penetrating the COF packages, the radiator plates, and the circuit unit to couple the same with each other.

Abstract: A plasma display device of the present invention having a plurality of display cells, comprises a X electrode kept at a reference voltage, a Y electrode, an address electrode, the X electrode and the Y electrode between which sustain discharge occurs, and an address driver comprising a first switch element Q2 for outputting a low level voltage, a second switch element Q1 for outputting a high level voltage, whose withstand voltage of the second switch element is lower than the first switch element, and a diode inserted and connected between the address electrode and the second switch element.

Abstract: A plasma display is disclosed. In one aspect, the display includes a scan driving board that applies a sustain pulse to a scan electrode during a sustain period and a sustain driving board that applies a sustain pulse to a sustain electrode during the sustain period. The scan driving board and the sustain driving board are connected by a harness. Ground wires are disposed at both sides of the harness and main path wires are disposed between the ground wires.

Abstract: A plasma display apparatus is disclosed. The plasma display apparatus includes a plasma display panel including a scan electrode, a sustain electrode, and an address electrode to intersect the scan electrode and the sustain electrode, an integrated driver for supplying the scan electrode or the sustain electrode with a sustain voltage, a data driver for supplying the address electrode with a data voltage, a first ground unit for grounding the integrated driver and the sustain electrode, a second ground unit for grounding the data driver, and a ground controller for controlling the first ground unit and the second ground unit to be electrically separated from each other for a predetermined period in at least one of a reset period and an address period of a subfield.

Abstract: A plasma display device and a driving method thereof are provided. An input grayscale value is converted according to a peak grayscale value of an input video signal of one frame. The number of on-subfields may be increased as a result of the grayscale conversion. Therefore, a total number of sustain discharge pulses applied during the one frame is reset in order to obtain the same brightness for the input and converted grayscale values.

Abstract: A plasma display apparatus and a method of driving the plasma display apparatus are disclosed. The plasma display apparatus includes a plasma display panel including a plurality of electrodes, a driving pulse controller for outputting a timing control signal and a driver. The driver supplies a set-down pulse to at least one electrode of the plurality of electrodes depending on the timing control signal. The first set-down pulse gradually falls from a first voltage to a second voltage during a first period, is maintained at the second voltage during a second period, and gradually falls from the second voltage to a third voltage during a third period.

Abstract: An interlace-type PDP is driven by an improved driving method so as to achieve a greater operating margin, higher resolution, and higher brightness. The interlace-type PDP is driven using odd and even frames in such a manner that the cells are grouped into cell groups such that each cell group includes two or three cells which are adjacent in a direction crossing the electrode pairs, and the cells are driven in units of cell groups. The grouping of cells is performed differently for even and odd frames such that, in one type of frame, locations of two or three cells grouped into each group are shifted by one cell, in the direction crossing the electrode pairs, from the locations of cells grouped together in the other type of frame.

Abstract: A plasma display device includes a PDP including discharge cells, address electrodes extending in a first direction and corresponding to the discharge cells, and sustain electrodes and scan electrodes in parallel with each other and crossing the address electrodes in the discharge cells, the sustain electrodes including first terminals and the scan electrodes including second terminals, a chassis base supporting PDP, an integrated board on the chassis base, the chassis base being between the integrated board and the PDP, and an integrated flexible circuit connecting the integrated board to the first terminals of the sustain electrodes and to the second terminals of the scan electrodes, the first terminals of the sustain electrodes and second terminals of the scan electrodes being arranged at a first side of four sides of the PDP.

Abstract: A plasma display device performing display control by utilizing plasma discharge includes a panel having a plurality of address electrodes and a plurality of display electrodes disposed to intersect with the address electrodes, and a drive circuit performing address discharge drive for selectively producing a discharge in cells between the address electrodes and the display electrodes, and display discharge drive for applying to the display electrode a display drive pulse having a voltage increasing with such a gradient as to continuously produce a discharge current in the selected cell. In the display discharge drive performed after the address discharge drive, a display drive pulse with an increasing voltage of gentle gradient is applied to the display electrode, thereby producing faint discharges continuously in the selected cell during the increase of the voltage applied to the display electrode. Display luminance is controlled by the above ramp-wave discharge.

Abstract: A method of driving a plasma display is disclosed. In one embodiment, the method includes dividing one screen into a plurality of areas, wherein each area corresponds to at least one of the plurality of discharge cells, and wherein the plurality of areas form a detection pattern. The method also includes displaying the detection pattern in the plasma display and receiving a detection image which has been previously detected or captured, wherein detection image corresponds to at least one of the plurality of areas. The method further includes comparing the received detection image with the detection pattern and determining a position of the detected or captured area based on the comparison.

Abstract: A plasma display device expressing a video is provided. A memory stores selection patterns being combinations of subfields lighting for expressing gradation values constituting gradation numbers. The selection patterns corresponding to gradation values constituting a first gradation number and selection patterns corresponding to gradation values constituting a second gradation number are stored in the memory while being partially shared with each other.

Abstract: The plasma display panel driving method is a method of driving a panel provided with a plurality of discharge cells, each having a scan electrode and a sustain electrode, and includes forming one-field period by arranging a plurality of sub-fields including an initializing period, address period, and sustain period, wherein sustain pulse is either a first sustain pulse for generating emission having one peak at the discharge cell or a second sustain pulse for generating emission having two peaks at the discharge cell, and rise time of second sustain pulse applied to the scan electrode and rise time of second sustain pulse applied to the sustain electrode are individually set in accordance with ratios of discharge cells for emitting light in the sustain period of the sub-field.

Abstract: The inventive plasma display is capable of enhancing the luminous efficiency and the brightness by minimizing ineffective ultraviolet rays. The plasma display according to the present invention comprises: a first transparent electrode having two or more protrusion parts; and a second transparent electrode having two or more protrusion parts corresponding respectively to the protrusion parts of the first transparent electrode. When discharges between the first and second transparent electrodes take place, there are two or more peaks in the discharge intensity of each transparent electrode.

Abstract: In conventional plasma display devices, reset by obtuse waves has been performed since discharge intensity becomes higher and background light emission is increased when reset by rectangular waves is performed. However, further improvement of the contrast to improve the image quality has been demanded. The present invention provides a driving method of a plasma display device using obtuse-wave reset in which sustain time of an achieved potential of the obtuse-wave reset is controlled in accordance with a display ratio of a video signal.

Abstract: A plasma display apparatus and a method of driving the same are disclosed. In the method, a first pulse of a positive polarity direction and a second pulse of a negative polarity direction are alternately supplied to the first electrode during a sustain period. In this case, an absolute value of a voltage of the first pulse is different from an absolute value of a voltage of the second pulse. A third pulse of a positive polarity direction to the third electrode is supplied during the supply of the first pulse, and a fourth pulse having a sum of a voltage magnitude of the third pulse and a voltage magnitude of the second pulse is supplied to the third electrode during the supply of the second pulse.

Abstract: A plasma display includes a plurality of scan electrodes. A scan voltage is sequentially supplied to the plurality of scan electrodes, and a non-scan voltage that is higher than the scan voltage is supplied to scan electrodes to which the scan voltage is supplied. The non-scan voltage is generated by dividing a voltage that is higher than the non-scan voltage and the scan voltage. Thus, a voltage source for supplying the non-scan voltage can be eliminated.

Abstract: There are provided a plasma display device in which dark contrast can be enhanced without deteriorating an image quality and a method of driving a plasma display panel. In a case of driving a plasma display device in which a magnesium oxide layer containing a magnesium oxide crystal to be excited by the irradiation of an electron beam and performing a cathode luminescence having a peak in a wavelength range of 200 to 300 nm by a sub-field method, in order to initialize all display cells, reset discharge is caused in each of the display cells in M sub-fields of N consecutive sub-fields (0<M<N).

Abstract: The present invention relates to a plasma display apparatus and driving method thereof, wherein rising and/or falling times of data pulses applied to address electrodes in an address period are controlled to reduce noise generation. Thus, address discharge is stabilized, discharge efficiency of plasma display panel is enhanced, and electrical damage to data drive ICs is prevented. The plasma display apparatus includes a plasma display panel including a plurality of address electrodes, a data driving unit including a plurality of data drive ICs that has a plurality of channels, wherein the data drive ICs are electrically connected to the address electrodes through the channels and drive the address electrodes, and a data pulse controller that controls the voltage-rising time and/or the voltage-falling time of the data pulses applied to the plurality of the address electrodes in an address period to be a sufficient duration, e.g. 100 ns or longer, by controlling the data driving unit.

Abstract: A source driving circuit includes a gamma voltage generator, a common voltage generator and a driver. The gamma voltage generator receives gamma data from a timing controller through reduced swing differential signaling (RSDS) transmission interface to generate corresponding gamma voltages. The common voltage generator receives common voltage data from the timing controller to generate a corresponding common voltage. The driver receives image data from the timing controller through the RSDS transmission interface, the gamma voltages from the gamma voltage generator and the common voltage from the common voltage generator for modifying the image data using the gamma voltages and the common voltage and transmitting the modified image data to a panel of the liquid crystal display.

Abstract: A technology is provided for suppressing the occurrence of problems due to positional shift caused by temperature increase of a panel and a chassis, in a structure for mounting a driver IC chip and a driver module in a flat display device. The plasma display device is provided with a chassis section (63) arranged close to a panel (PDP) (64) and a rear surface side thereof; and a WB-ADM (address driver module) (61) having a flexible substrate (41) whereupon the driver IC chip (in a sealing resin (45)) for driving an electrode of the panel (64) is mounted by WB (wire bonding) method. The plasma display device is also provided with a buffer member (62) attached to the chassis section (63) to have a sliding mechanism and for fixing the WB-ADM (61).

Abstract: A plasma display device includes a controller for generating and outputting scan data corresponding to a scan electrode to which a scan pulse is applied during an address period, and outputting the same to a scan integrated circuit having a plurality of output terminals coupled to the scan electrodes for driving the scan electrodes. During an address period, the scan integrated circuit applies a first voltage through an output terminal corresponding to the scan data, and applies a second voltage that is greater than the first voltage through another output terminal. The configuration enables the plasma display device to freely control the order of the scan electrodes to which the first voltage is applied according to the scan data.

Abstract: In a plasma display device, a first driving method or a second driving method is selected according to a video signal, and the plasma display device is driven according to the selected driving method. The first driving method includes selecting first on cells from among a plurality of discharge cells in an address period of a first subfield of a plurality of subfields, and selecting second on cells in an address period of each of a plurality of second subfields from among the plurality of discharge cells other than discharge cells selected as on cells in preceding subfields. The second driving method includes initializing the plurality of discharge cells as off cells in a reset period of each of the plurality of subfields, and selecting on cells from among the plurality of discharge cells in an address period of each of the plurality of subfields following the corresponding reset period.

Abstract: In a plasma display panel, protective layer of front plate has base protective layer and particle layer. The base protective layer is formed of a thin film of a metal oxide containing at least one of magnesium oxide, strontium oxide, calcium oxide, and barium oxide. The particle layer is formed by sticking, to base protective layer, single-crystal particles of magnesium that have an NaCl crystal structure surrounded by specified two type orientation faces of a (100) face and a (111) face, or by specified three type orientation faces of a (100) face, a (110) face, and a (111) face. A panel driving circuit drives the panel in a manner that an initializing discharge for forming wall charge is caused in the first subfield of a plurality of subfields, and an address discharge for erasing the wall charge is caused in address periods of the plurality of subfields.

Abstract: A plasma display device that enables a reduction of costs in implementing a touch panel function using infrared rays generated when displaying an image, which are emitted in a substantially uniform dispersion from a display area. One embodiment includes a plasma display panel (PDP) for displaying the image and a pair of infrared sensor cameras at two corners of the PDP. The infrared sensor cameras are either on the front or rear side of the PDP, and are utilized to detect changes in the amount of infrared rays emitted from the PDP. A controller determines a position where the amount of infrared rays is changed, which corresponds to a touch position, and transmits a detection signal indicating the location of the change in the amount of infrared rays. The infrared sensor camera has a lens with a view angle in the range of 90° to 180°.

Abstract: The present invention relates to a plasma display panel including an upper dielectric layer having a concave portion and a convex portion. The plasma display panel comprising: a front substrate; a plurality of electrodes arranged on the front substrate; an upper dielectric layer covering the plurality of electrodes on the front substrate; and a rear substrate arranged opposite to the front substrate, wherein the upper dielectric layer comprises a convex portion thicker than the surrounding portion and a concave portion thinner than the surrounding portion, and the thickness of the portion of the upper dielectric layer corresponding to the concave portion is equal to or more than 0.04 times and equal to or less than 0.9 times of the thickness of the portion of the upper dielectric layer corresponding to the convex portion.

Abstract: A plasma display includes a plurality of discharge cells, and is driven with one frame divided into a plurality of subfields having respective weight values. Light emitting cells are selected through address discharge during an address period of each subfield, and sustain discharge is performed on the light emitting cells for a number of times corresponding to a weight value of the corresponding subfield during a sustain period of each subfield to display images. The plasma display provides a sensing period for identifying an external contact with the plasma display prior to the address period in at least one subfield of the plurality of subfields, and discharges the plurality of discharge cells during a sensing period. The plasma display identifies the external contact based on light generated from the discharge cells during the sensing period.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.

Abstract: A plasma display device including a plasma display panel that displays images, an integrated circuit chip that controls potentials to be applied to a discharge electrode, a protection film that covers the integrated circuit chip, a thermally conductive material disposed on a portion of a surface of the protection film, and a cover plate that covers the integrated circuit chip.

Abstract: A plasma display panel is provided in which discharge connection in the column direction is prevented without increasing the number of man-hours in a formation process of a partition and without deteriorating ventilation for an exhaust process. A pattern in a plan view of a partition is made a mesh pattern in which vertical patterns are included at inter-row positions in each column. Each of first vertical walls is positioned at a boundary between columns, each of second vertical walls is arranged at a position away from a boundary between columns for each boundary between rows and each of horizontal walls is positioned at a boundary between rows. In the partition, a height of portions where the first vertical wall crosses the horizontal wall and a height of portions where the second vertical wall crosses the horizontal wall are smaller than a height of the other portions of the partition.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.

Abstract: A plasma display device is provided. The plasma display device can reduce the capacity of a pass switch necessary for various driving circuits for applying various driving signals to a plasma display panel (PDP) and can thus contribute to the reduction of the manufacturing cost. In addition, the plasma display device can reduce the amount of heat generated by the various driving circuits and can thus contribute to the improvement of the reliability and the reduction of the power consumption.

Abstract: Any of first and second sub-field configurations is selected. In the first sub-field configuration, a width of a write pulse of a sub-field with a lowest display luminance is not more than widths of write pulses of the other sub-fields. In the second sub-field configuration, the width of the write pulse of the sub-field with the lowest display luminance is larger than the widths of the write pulses of the other sub-fields. When the first sub-field configuration is selected, a voltage applied to a sustain electrode in a write period of the sub-field with the lowest display luminance is set higher than a voltage applied to the sustain electrode in write periods of the other sub-fields. When the second sub-field configuration is selected, the voltage applied to the sustain electrode in the write period of the sub-field with the lowest display luminance is set to be the same as the voltage applied to the sustain electrode in the write period of any of the other sub-fields.

Abstract: An image signal processing circuit of a plasma display device includes an image data replacement circuit for replacing image data for a predetermined subfield with image data having less power consumption in a data electrode drive circuit; a power calculating circuit for calculating power consumption in the data electrode drive circuit and outputting power consumption for each field as field power; a power predicting circuit for predicting the field power when the number of predetermined subfields is decreased and outputting it as predicted field power; and an SF determination circuit. The SF determination circuit increases the number of predetermined subfields when the field power is not less than a predetermined power threshold, and decreases the number of predetermined subfields when the field power is less than the predetermined power threshold and the predicted field power is less than the predetermined power threshold.

Abstract: The present invention relates to an electrowetting element for a display device, a display device and a control system for controlling at least one electrowetting element. The electrowetting element comprises: a radiation valve comprising a first fluid and a second fluid immiscible with the first fluid, wherein the first and second fluids are configurable to change a characteristic of radiation passing through at least one of the first and second fluids; and an electrically switchable part switchable between a reflective mode for reflecting radiation incident on the switchable part and towards the radiation valve, and a transmissive mode for transmitting radiation incident on the switchable part through the switchable part and towards the radiation valve.

Abstract: A plasma display device is provided which can stabilize discharge and improve display quality. In the plasma display device, a rear edge part of a sustain pulse to be applied at the end of a sustain period of each of the subfields is formed of a first section in which a voltage value slowly changes from a peak voltage value of the sustain pulse to a predetermined first voltage value, a second section in which the first voltage value is maintained for a predetermined period, and a third section in which the voltage value slowly changes from the first voltage value to a second voltage value having polarity different from that of the first voltage value.

Abstract: Set-up, write, sustain and erase pulses are variously applied to a plasma display panel using a staircase waveform in which the rising or falling portion is in at least two steps. These staircase waveforms can be realized by adding at least two pulses. Use of such waveforms for the set-up, write and erase pulses improves contrast, and use for the sustain pulses reduces screen flicker and improves luminous efficiency. This is of particular use in driving high definition plasma display panels to achieve high image quality and high luminance.