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US 4,665,345 AGranted
Plasma display panel having improved display
AssigneeSony Corporation
InventorsToshio Shionoya, Takashi Tsuboi
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AssigneeSony Corporation
InventorsToshio Shionoya, Takashi Tsuboi
Estimating the term…
A plasma display panel having cathodes, anodes and trigger electrodes wherein the trigger electrodes correspond to a plurality of discharge electrodes which are sequentially scanned and wherein an insulating layer separates the trigger electrodes and the discharge electrodes and where a constant trigger voltage is supplied until the plurality of discharge electrodes corresponding to the trigger electrode have been activated. In the invention, the trigger voltage is quickly changed and is then returned to an intermediate level within the varied potential difference and the frequency of a trigger voltage pulse is reduced to one by the number of block discharged electrodes so that the power consumption of the trigger electrodes is greatly reduced and since the trigger voltage is returned to an intermediate level erroneous discharges will not be generated between inactive trigger electrodes and the other discharge electrodes to which data voltage pulses are supplied thus producing a high definition display.
A plasma display panel, comprising pairs of discharge electrodes arranged in an X-Y matrix form with discharge gaps therebetween, and at least one trigger electrode for inducing discharges arranged adjacent one of said discharge electrodes and said trigger electrode separated by an insulating layer from said discharge electrodes, and said discharge electrodes activated in a line sequential manner, a constant trigger voltage supplied to said trigger electrode to generate the inducing discharge between said trigger electrode and said discharge electrodes associated therewith until activation throughout the plurality of said discharge electrodes is completed, and after the induce-discharging, the trigger voltage is abruptly changed from a first voltage to a second voltage which is lower than a third voltage and thereafter is returned to said third voltage whereby said third voltage is between said first and second voltages.
A plasma display panel comprising pairs of discharge electrodes arranged in an X-Y matrix form in an envelope with discharge gaps therebetween, at least one trigger electrode for inducing discharges mounted adjacent some of said discharge electrodes and separated therefrom by an insulating layer, a trigger circuit connected to said trigger electrode and producing at least one voltage waveform which varies as a function of time and which has a first voltage level during a first time period which is sufficient to induce discharge and which abruptly changes to a substantially different second voltage for a short second time after said first time and said second voltage is insufficient to initiate induce discharge and said voltage waveform changing during a third time period to a third voltage which is intermediate between the level of said first and second voltages.
Dependencies are inferred from the claim text.