Plasma display device and capacitive load driving circuit
A problem is to be solved that there is to be provided a plasma display device capable of generating driving signals with less variation in delay time and without carrying out any phase adjustment. There is provided a plasma display device including; a first display electrode; a second display electrode adapted to cause a discharge to occur between the first display electrode and the second display electrode; a first display electrode drive circuit for applying a discharge voltage to the first display electrode; and a second display electrode drive circuit for applying a discharge voltage to the second display electrode. The first display electrode drive circuit has a first output element for supplying a first electric potential to the first display electrode in accordance with a first input signal which is inputted by using a transformer.
1. A plasma display device, comprising:
a first display electrode;
a second display electrode adapted to cause a discharge to occur between the first display electrode and the second display electrode;
a first display electrode drive circuit to apply a discharge voltage to the first display electrode; and
a second display electrode drive circuit to apply a discharge voltage to the second display electrode, wherein
the first display electrode drive circuit has a first output element, a second output element and a transformer, and
with supplying a first signal from a first input terminal to one end of a primary winding of the transformer,
the first display electrode drive circuit connects one end of a secondary winding of the transformer to a control terminal of the first output element, connects the other end of the secondary winding to the first display electrode, and applies a first electric potential to the first display electrode by turning on the first output element, and
the first display electrode drive circuit supplies the first signal to a control terminal of the second output element not through the transformer, and applies the first electric potential to the first display electrode by turning on the second output element.
2. The plasma display device according to claim 1 , wherein
the first and second output elements supply a high level electric potential as the first electric potential,
the first display electrode drive circuit further comprises a third output element a fourth output element and a second transformer, and
with supplying a second signal from a second input terminal to one end of a primary winding of the second transformer,
the first display electrode drive circuit connects one end of a secondary winding of the second transformer to a control terminal of the third output element, connects the other end of the secondary winding to a low level electric potential, and applies the low level electric potential to the first display electrode by turning on the third output element, and
the first display electrode drive circuit supplies the second signal to a control terminal of the fourth output element not through the second transformer, and applies the low level electric potential to the first display electrode by turning on the fourth output element.
3. The plasma display device according to claim 2 , further comprising:
the first coil connected to the first display electrode;
a fifth output element inputting a third signal from a third input terminal through a third transformer, and connecting a second electric potential point to the first display electrode through the first coil in accordance with the third signal;
a first diode adapted to cause a forward current to flow from the second electric potential point to the first display electrode through the fifth output element and the first coil;
a second coil connected to the first display electrode;
a sixth output element inputting a fourth signal from a fourth input terminal through a fourth transformer, and connecting the second electric potential point to the first display electrode through the second coil in accordance with the fourth signal; and
a second diode adapted to cause a forward current to flow from the first display electrode to the second electric potential point through the sixth output element and the second coil.