Plasma display apparatus and method of driving the same
A plasma display apparatus is disclosed. The plasma display apparatus includes a plasma display panel including a scan electrode, and a scan driver. The scan driver charges a first capacitor to a first voltage charged to a source capacitor, and supplies a setup pulse having a voltage equal to a sum of the first voltage charged to the first capacitor and a setup voltage to the scan electrode.
1 . A plasma display apparatus, comprising:
a plasma display panel including a scan electrode; and
a scan driver that charges a first capacitor to a first voltage charged to a source capacitor, and supplies a setup pulse having a voltage equal to a sum of the first voltage charged to the first capacitor and a setup voltage to the scan electrode.
2 . The plasma display apparatus of claim 1 , wherein the first voltage is substantially equal to one half a sustain voltage.
3 . The plasma display apparatus of claim 1 , wherein the first voltage is supplied to the scan electrode during a reset period of at least one subfield of a plurality of subfields.
4 . The plasma display apparatus of claim 1 , wherein the scan driver includes
an energy recovery circuit that charges the first capacitor to the first voltage charged to the source capacitor, and
a setup supply unit that supplies the setup pulse having the voltage equal to a sum of the first voltage charged to the first capacitor and the setup voltage to the scan electrode.
5 . The plasma display apparatus of claim 4 , wherein the scan driver turns off a seventh switch connected between the setup supply unit and the scan electrode so that the first voltage is not supplied to the scan electrode during the charging of the first capacitor to the first voltage.
6 . The plasma display apparatus of claim 4 , wherein the scan driver turns on an ER-UP switch and an ER-DOWN switch during the charging of the first capacitor to the first voltage.
7 . The plasma display apparatus of claim 1 , wherein the scan driver supplies a set-down pulse, which sharply falls from a setup peak voltage to a sustain voltage and then gradually falls from the sustain voltage, to the scan electrode during a set-down period of a reset period.
8 . The plasma display apparatus of claim 1 , wherein the scan driver supplies a set-down pulse, which sharply falls from a setup peak voltage to the first voltage and then gradually falls from the first voltage to a predetermined voltage level, to the scan electrode during a set-down period of a reset period.
9 . The plasma display apparatus of claim 1 , wherein the scan driver maintains the highest voltage of the setup pulse for a predetermined duration of time.
10 . A method of driving a plasma display apparatus, which is driven with each of a plurality of subfields being divided into a reset period, an address period, and a sustain period, the method comprising:
supplying a setup pulse gradually rising from a first voltage to a setup peak voltage to a scan electrode during a setup period of the reset period, wherein the first voltage is less than a voltage of a sustain pulse supplied to the scan electrode during the sustain period; and
supplying a set-down pulse to the scan electrode during a set-down period of the reset period, wherein the set-down pulse sharply falls from the setup peak voltage to the voltage of the sustain pulse, and then gradually falls from the voltage of the sustain pulse to a predetermined voltage level.
11 . The method of claim 10 , wherein the first voltage is substantially equal to one half the voltage of the sustain pulse.
12 . The method of claim 10 , wherein the first voltage is supplied to the scan electrode in at least one subfield of a plurality of subfields.
13 . The method of claim 10 , wherein the first voltage charged to a source capacitor of an energy recovery circuit is supplied to the scan electrode.
14 . The method of claim 10 , wherein the setup pulse is maintained at the highest voltage level of the setup pulse for a predetermined duration of time.
15 . A method of driving a plasma display apparatus, which is driven with each of a plurality of subfields being divided into a reset period, an address period, and a sustain period, the method comprising:
supplying a setup pulse gradually rising from a first voltage to a setup peak voltage to a scan electrode during a setup period of the reset period, wherein the first voltage is less than a voltage of a sustain pulse supplied to the scan electrode during the sustain period; and
supplying a set-down pulse to the scan electrode during a set-down period of the reset period, wherein the set-down pulse sharply falls from the setup peak voltage to the first voltage, and then gradually falls from the first voltage to a predetermined voltage level.
16 . The method of claim 15 , wherein the first voltage is substantially equal to one half the voltage of the sustain pulse.
17 . The method of claim 15 , wherein the first voltage is supplied to the scan electrode in at least one subfield of a plurality of subfields.
18 . The method of claim 15 , wherein the first voltage charged to a source capacitor of an energy recovery circuit is supplied to the scan electrode.
19 . The method of claim 15 , wherein the setup pulse is maintained at the highest voltage level of the setup pulse for a predetermined duration of time.