摘要:
Sustain pulses are alternately applied to a pair of display electrodes of discharge cells provided in a plasma display panel (PDP) to generate a sustain discharge to display an image on the PDP. The sustain pulses include two-crests discharge voltage waveforms having a first maximum and second maximum values, in which discharges are generated twice in a half cycle. After applying a sustain pulse having a one-crest discharge voltage waveform to a pair of display electrodes, a predetermined number of sustain pulses of two-crests discharge voltage waveforms are consecutively applied. A time, from applying a second sustain pulse of a two-crests discharge voltage waveform to clamping a voltage of the second sustain pulse to the second maximum value, is made longer than a time, from applying a first sustain pulse of a two-crests discharge voltage waveform to clamping a voltage of the first sustain pulse to the second maximum value.
摘要:
A driving method for a plasma display panel is disclosed in which sustain pulses are alternately applied to a pair of display electrodes of plural discharge cells provided in the plasma display panel to generate a sustain discharge, thereby causing an image to be displayed on the plasma display panel. The sustain pulses include a two-crests discharge voltage waveform having two maximum values in which discharges are generated twice in a half cycle. The driving method includes consecutively applying the two-crests discharge voltage waveforms to the pair of display electrodes; and making a time until the second one of the maximum values of the subsequently applied two-crests discharge voltage waveform is clamped longer than a time until the second one of the maximum values of the initially applied two-crests discharge voltage waveform is clamped.
摘要:
At an on-cell reset, a positive ramp wave of an ultimate voltage, which is larger than a maximum voltage of a sustain pulse, and smaller than an ultimate voltage of a positive ramp wave applied to a Y electrode at an all-cell reset, is applied to the Y electrode to make a weak discharge occur at a cell where it is non-lighting at a previous sub-field and a wall charge thereof is decreased due to an influence from an adjacent cell, thereby, it makes it possible to return a wall charge state to a normal state, to be capable of lighting a cell to be lighted securely based on a display data.
摘要:
A plasma display apparatus includes a plasma display panel having a plurality of sustain electrodes and a plurality of scan electrodes, a driver circuit to apply sustain pulses to the plurality of sustain electrodes and the plurality of scan electrodes to generate sustain discharges, and a control circuit to control the driver circuit such that a total light emitting pulse count defined as a total number of sustain pulses in one display frame is set equal to a predetermined pulse count defined as a function of a display load ratio, and such that the total light emitting pulse count is set lower than the predetermined pulse count upon detecting a predetermined condition, wherein the control circuit is configured to cause the driver circuit to selectively generate first sustain pulses with timing for clamping to a predetermined voltage being first timing and second sustain pulses with timing for clamping to the predetermined voltage being second timing, and configured to cause a ratio between a number of the first sustain pulses and a number of the second sustain pulses to be different between a case of the total light emitting pulse count being the predetermined pulse count and a case of the total light emitting pulse count being smaller than the predetermined pulse count.
摘要:
The plasma display device has a display panel having first and second display electrodes and address electrodes, an electrode drive circuit, and a drive control circuit for controlling the electrode drive circuit. The drive control circuit performs a reset drive control, address drive control and sustain drive control in each subfield. The drive control circuit performs an all cell reset drive control which resets all cells in a first subfield out of the plurality of subfields, and an ON cell reset drive control which resets ON cells in a second subfield. At a first temperature T1, an ultimate potential of an slope pulse of the first display electrode is controlled to be a first potential in the ON cell reset drive control, and at a second temperature T2>T1, the ultimate potential is controlled to be a second potential higher than the first potential.
摘要:
This copper alloy contains at least zirconium in an amount of not less than 0.005% by weight and not greater than 0.5% by weight, includes a first grain group including grains having a grain size of not greater than 1.5 μm, a second grain group including grains having a grain size of greater than 1.5 μm and less than 7 μm, the grains having a form which is elongated in one direction, and a third grain group including grains having a grain size of not less than 7 μm, and also the sum of α and β is greater than γ, and α is less than β, where α is a total area ratio of the first grain group, β is a total area ratio of the second grain group, and γ is a total area ratio of the third grain group, based on a unit area, and α+β+γ=1.
摘要:
This copper alloy contains at least zirconium in an amount of not less than 0.005% by weight and not greater than 0.5% by weight, includes a first grain group including grains having a grain size of not greater than 1.5 μm, a second grain group including grains having a grain size of greater than 1.5 μm and less than 7 μm, the grains having a form which is elongated in one direction, and a third grain group including grains having a grain size of not less than 7 μm, and also the sum of α and β is greater than γ, and α is less than β, where α is a total area ratio of the first grain group, β is a total area ratio of the second grain group, and γ is a total area ratio of the third grain group, based on a unit area, and α+β+γ=1.
摘要:
This copper alloy contains at least zirconium in an amount of not less than 0.005% by weight and not greater than 0.5% by weight, includes a first grain group including grains having a grain size of not greater than 1.5 μm, a second grain group including grains having a grain size of greater than 1.5 μm and less than 7 μm, the grains having a form which is elongated in one direction, and a third grain group including grains having a grain size of not less than 7 μm, and also the sum of α and β is greater than γ, and α is less than β, where α is a total area ratio of the first grain group, β is a total area ratio of the second grain group, and γ is a total area ratio of the third grain group, based on a unit area, and α+β+γ=1.
摘要:
This copper alloy contains at least zirconium in an amount of not less than 0.005% by weight and not greater than 0.5% by weight, includes a first grain group including grains having a grain size of not greater than 1.5 μm, a second grain group including grains having a grain size of greater than 1.5 μm and less than 7 μm, the grains having a form which is elongated in one direction, and a third grain group including grains having a grain size of not less than 7 μm, and also the sum of α and β is greater than γ, and α is less than β, where α is a total area ratio of the first grain group, β is a total area ratio of the second grain group, and γ is a total area ratio of the third grain group, based on a unit area, and α+β+γ=1.
摘要:
A high-strength Cu based alloy, consists of:Ni: 0.5 to 2.0%;Sn: 1.2 to 2.5%;Si: 0.04 to 0.1%;Zn: 0.1 to 1%;Mg: 0.0001 to 0.02%;Mn: 0.0001 to 0.1%;P: 0.0001 to 0.02%; andCu and inevitable impurities: the balance,wherein the total content of Mg, Mn and P is 0.001 to 0.12%. The Cu based alloy is suitable for use as a material of electrical and electronic parts, and free from smutting during pretreatment for plating thereof.