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

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: 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: The present invention provides a plasma display device including: a plurality of scan electrodes sequentially scanned to be impressed with a scan pulse; an address electrode that is impressed with an address pulse corresponding to the scan pulse, for selection of a display pixel; a scan driving circuit generating the scan pulse; and an address driving circuit generating the address pulse. The address pulse rises in n stages (n is an integer equal to or larger than 2), and a period in a period during which the address pulse rises from a lowest voltage to a highest voltage overlaps a scan pulse immediately prior to the scan pulse corresponding to the address pulse.

Abstract: In a plasma display device comprising: plural first, second, and third electrodes disposed adjacently and extending in a first direction, the third electrodes being provided between the first and second electrodes for repeating discharges; a dielectric layer covering the electrodes; a first electrode driving circuit for driving the first electrodes; a second electrode driving circuit for driving the second electrodes; and a third electrode driving circuit for driving the third electrodes, grayscale display is performed by a sub-field method, and the third electrodes are set to have a potential approximately the same as that of the first or second electrode at the discharge in the repetitive discharges. In this plasma display device, the third electrode driving circuit makes the third electrode operate as an anode at least once at least in one sub-field from minimum luminance and makes it operate as a cathode in the rest thereof.

Abstract: A heat treatment apparatus includes a heating furnace including a tunnel-shaped heating space for heating an object to be heated, the heating space having an inlet port and an outlet port formed at both ends thereof; a transporting unit transporting the object to the outlet port when the object is brought into the heating space through the inlet port; a heating unit heating the object that is being transported; and a gas-flow generation unit forming a gas flow that flows in a transporting direction of the object in the heating space, wherein the heating space has a cross-section orthogonal to the transporting direction of the object, the cross-section is changed in area along the transporting direction of the object.

Abstract: A functional sheet is brought into intimate contact with a front surface of a plasma display panel, and the functional sheet has a structure in which heat diffusion is superior to heat insulation between the plasma display panel and outside air. In addition, a display device includes a controller for controlling a drive voltage pulse train so that power consumption in a unit area in a light emission region within the screen is limited under a set value when one image is displayed.

Abstract: A technique for improving impact resistance performance of a panel is provided in a module or display apparatus with a flat display panel. In a PDP module, a filter is bonded onto a front surface side of a PDP, and a base chassis is bonded to a rear surface side with a two-sided tape. In an attaching portion for the base chassis and a casing, a spring structure portion having a sloped portion and a space is provided in an area of the base chassis so as to correspond to a connecting part of the casing. Impact to glass of the PDP is buffered to an impact force in a direction vertical to a surface of the PDP due to a spring property of the spring structure portion.

Abstract: In a plasma display module, a flexible substrate is strengthened and a mounting structure for alleviating stresses is provided, thereby preventing the metal fatigue of wirings. In a PDP (Plasma Display Panel) module, a metal plate and a flexible substrate constituting a driver module are provided. On the flexible substrate, wirings not connected to electrodes of the panel (independent linear patterns) are disposed on an outer side of wirings and near an edge portion of the metal plate to which the flexible substrate is attached.

Abstract: A plasma display panel includes first and second substrates opposed to each other for defining a space filled with discharge gas, a screen made up of cells arranged in the row and column directions, display electrodes arranged on the first substrate, the display electrodes extending in the row direction, band-like partitions arranged in parallel on the second substrate for dividing the gas filled space into columns, and fluorescent material layers sticking to side faces of the partitions and inner surfaces between the partitions on the columns, each of the fluorescent material layers extending across cells. The thickness of the fluorescent material layer at a part sticking to the side face of the partition and overlapping with the display electrodes is designed to be smaller than the thickness at a part sticking to the side face of the partition in the vicinity of the surface discharge gap.

Abstract: An exposure process using photomasks, the process includes the steps of: providing a plurality of glass photomasks for optical lithography with respect to a target substrate to be processed, the photomasks having identical exposure patterns, and exposing the target substrate a plurality of times using the plurality of glass photomasks.