Abstract: A plasma display panel includes a plurality of first bus electrodes and a plurality of second bus electrodes disposed so as to be adjacent on at least one side, a plurality of first discharge electrodes and a plurality of second discharge electrodes that are transparent and extend in a comb-tooth shape in a direction perpendicular to the bus electrodes, a plurality of third electrodes extending in parallel in a vertical direction, and a plurality of horizontal barrier ribs extending in parallel to the third electrodes. Display cells are formed in portions where the first and second bus electrodes face each other and which are defined by the barrier ribs in a horizontal direction. The first discharge electrodes and the second discharge electrodes are alternately disposed for every two cells in the horizontal direction so as to protrude from the first and second bus electrodes, respectively.

Abstract: A display panel device includes a front sheet that is glued on a front face of a plasma display panel. The front sheet includes a mesh made of a light shield member that has a blackened front surface and a plane size larger than a screen. A length between diagonal lattice points of the mesh is shorter than a cell pitch that is longer one of the cell pitches in the vertical direction and the horizontal direction of the screen. An arrangement direction of the mesh is inclined with respect to an arrangement direction of the cells in the screen.

Abstract: A capacitive-load driving circuit has a configuration in which a driving power supply source is connected to an output terminal via a driving device. The capacitive-load driving circuit has a power distributing circuit inserted between the driving power supply source and the driving device. Therefore, temperature rise (power consumption) in the capacitive-load driving circuit can be distributed.

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 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: A load drive circuit, successfully suppressed in unnecessary electromagnetic wave generation through suppressing transition time in the drive voltage waveform even under a reduced effective load, and a display device using this circuit are provided, wherein the circuit comprises a drive circuit inversively amplifying a signal, used for driving a load, input through an input terminal, and output from an output terminal; a first current source connected to the input terminal of the drive circuit and being capable of controlling current output; and a first switch circuit connected between the input terminal of the drive circuit and a first reference potential point.

Abstract: A display apparatus driving method for a field time division type display apparatus displays grayscale by combining a plurality of subfields into which one field has been divided. Each subfield includes a resetting, an addressing, and a sustaining. At least one extra subfield is additionally provided which does not have a resetting, and which stays always ON with a luminance level higher than a prescribed input luminance level.

Abstract: A PDP apparatus comprises, in a circuit part, a ramp output device which outputs a ramp wave to electrodes of a PDP. The ramp output device has a ramp generator which generates and outputs a first ramp wave of which inclination is variable, an impedance conversion circuit which receives the first ramp wave as input and outputs a second ramp wave produced by impedance conversion, and a feedback circuit which receives the second ramp wave as input and feeds it back to the input of the ramp generator. The ramp generator outputs the second ramp wave as a ramp wave (output voltage). Techniques to realize output of stabilized ramp wave in a PDP apparatus so as to stabilize PDP display operations are provided.

Abstract: There is provided a plasma display device including: a nonlinear conversion circuit which nonlinearly converts a first image signal to a second image signal and expresses the second image signal by a real part and an error part to avoid use of a specific subfield lighting pattern; an error diffusion circuit which, when the error part of the second image signal is not zero, spatially or temporally diffuses the error part; and a subfield pattern conversion circuit which, when a lighting pattern of subfields is selected based on the error-diffused second image signal, selects another subfield lighting pattern without using the specific subfield lighting pattern.

Abstract: There is provided a plasma display device that has a first, a second, and a third electrodes, phosphors emitting a light depending on discharges generated by applying voltages of the first to third electrodes, and a drive circuit for applying a pulse to the third electrode in every time discharge light emission is generated by applying an alternating pulse between the first and second electrodes, and the time at which the pulse of the third electrode reaches 50% of its amplitude in the trailing edge takes place before the time of the first peak of the light emission waveform.

Abstract: A problem is to be solved in that there is to be provided a display device and a display method allowing two or more sorts of sustaining pulses to be employed by switching over the pulses depending on the state of display in such a manner as to achieve characteristics including high light emission efficiency/decrease in streaking and high luminance and the like. The display device is provided wherein one frame image contains a plurality of sub-frames, including: a detection section detecting a state of display: a sustaining pulse output section to select and output one out of two or more sorts of sustaining pulses for a display for each sub-frame depending on the state of display.

Abstract: A method for driving a plasma display device, wherein a plurality of sub-frames is classified into first-type and second-type sub-frames. In each reset period of the first-type sub-frames, a gradient voltage pulse having an reverse polarity to that of a final gradient voltage pulse is applied between first and second electrodes prior to the final gradient voltage pulse, while in each reset period of the second-type sub-frames, the gradient voltage having the reverse polarity to that of the final gradient voltage pulse is not applied between the first and second electrodes. There is a plurality of first-type sub-frames in one frame, and the attained voltage of a gradient voltage pulse of reverse polarity included in at least one first-type sub-frame among the plurality of first-type sub-frames differs from that of the gradient voltage pulse of reverse polarity in other first-type sub-frame.

Abstract: A driving circuit of a plasma display panel is provided in which a display cell including a first electrode and a second electrode is selected to light up, for applying a first voltage Vs1 to the first electrode and a second voltage Vs2 to the second electrode adjacent to the first electrode to cause a sustain discharge between the first and second electrodes. The driving circuit generates a sustain discharge voltage such that, during the sustain discharge between the first and second electrodes, an applied voltage Vc to a third electrode adjacent to the first electrode opposite to the second electrode falls within a range Vs2?Vc<Vs1, and, in this case, when a display cell including the third electrode is selected to light up, the polarity of a wall charge formed on the third electrode becomes positive.

Abstract: A base chassis has projection parts. A surrounding part of an image display surface of a plasma display panel (PDP) is in contact with a contact part formed around an opening part of a front case. The projection parts are fixed to a chassis fixation part of the front case. The projection parts each have an elastic structure part which elastically deforms in response to a pushing force to the display surface of the PDP. An external force from a rear case side is transmitted to the chassis fixation part only, preventing impact to the PDP. When the PDP directly receives an external force from the front case side, the elastic structure part can elastically deform to alleviate the impact to the PDP. This can alleviate stress to the PDP when applied an external force from the front surface and the rear surface of the cases.

Abstract: A novel PDP device capable of reducing the peak current of a sustain discharge without the need to modify circuits has been disclosed.

Abstract: An air purifier includes a main body defining an air passage therein to allow sucked air to pass therethrough prior to being discharged, and a first filter installed in the main body to be switched between a closed state and an open state. The first filter removes contaminants from the sucked air in the closed state, and allows the sucked air to pass through the air passage in the open state. The air purifier may include a main body to suck and discharge air, with a bypass passage formed in the main body so that the bypass passage is opened or closed by a door, and a first filter installed in the main body. The sucked air passes through the first filter prior to being discharged when the door is closed, and passes through the bypass passage prior to being discharged when the door is opened.

Abstract: A plurality of sub-frames is classified into first-type and second-type sub-frames. In each reset period of the first-type sub-frames, a gradient voltage pulse having an reverse polarity to that of a final gradient voltage pulse is applied between first and second electrodes prior to the final gradient voltage pulse, while in each reset period of the second-type sub-frames, the gradient voltage having the reverse polarity to that of the final gradient voltage pulse is not applied between the first and second electrodes. There is a plurality of first-type sub-frames in one frame, and the attained voltage of a gradient voltage pulse of reverse polarity included in at least one first-type sub-frame among the plurality of first-type sub-frames differs from that of the gradient voltage pulse of reverse polarity in other first-type sub-frame.

Abstract: A PDP apparatus in which a large-sized plasma display panel, whose electrodes have large drive requirements, is driven by using already existing driver ICs, and a PDP apparatus in which the operating conditions when a plasma display panel is driven by using a plurality of driver ICs have been improved, are disclosed. According to a first aspect, one electrode of the plasma display panel is driven by combining a plurality of drive signals output from the driver IC and, according to a second aspect, in a configuration in which a plurality of electrodes are driven by a plurality of identical driver ICs, when some of a plurality of outputs of the driver ICs are not connected to the electrodes and not used, the unused outputs are distributed in each driver IC as evenly as possible.

Abstract: The present invention provides a method by which a barrier rib substrate for a plasma display panel can be produced easily. A method for producing a barrier rib substrate for a plasma display panel of the present invention includes the steps of: producing a barrier rib substrate for a large plasma display panel by forming electrodes extending in a predetermined direction on a substrate and barrier ribs on the substrate or in the substrate itself; and producing four or more barrier rib substrates for small plasma display panels with barrier ribs formed up to the substrate end by performing, in regard to the barrier rib substrate for the large plasma display panel, division in a direction orthogonal to a direction in which the electrodes extend and at least one-time division in a direction parallel to the direction in which the electrodes extend.

Abstract: A partition is formed by the process including a step for providing a sheet-like partition material that covers a display area and outside thereof on the surface of the substrate, a step for providing a mask for patterning that covers the display area and the outside thereof, so that a pattern of the portion arranged outside of the display area of the mask is a grid-like pattern, a step for patterning the partition material covered partially with the mask by a sandblasting process, and a step for baking the partition material after the patterning.