Back to results
US 7,397,446 B2Granted
Plasma display panel driving circuit
AssigneeChunghwa Picture Tubes, Ltd.
InventorsBi-Hsien Chen, Yi-Min Huang
Life of this patent
Estimating the term…
Abstract
A driving circuit for producing sustain waveforms of a plasma display panel (PDP) is mentioned. The driving circuit includes the functions of voltage clamping and energy recovery. By controlling switches contained in the driving circuit, the supplied voltage source can be made to be only half of the sustain voltage. The voltage stress of some components will therefore be lower. In addition, the numbers of components can be reduced in the driving circuit.
Claims18
A plasma display panel driving circuit comprising:
- a panel equivalent capacitor having a first side and a second side;
- a first switch electrically connected between the first side of the panel equivalent capacitor and a first voltage;
- a second switch electrically connected between the first side of the panel equivalent capacitor and a first node;
- a third switch electrically connected between the first node and a second voltage;
- a first capacitor electrically connected between the first node and a second node;
- a fourth switch electrically connected between the second node and the second voltage;
- a first inductor and a fifth switch electrically connected in series between the second node and a third voltage;
- a sixth switch electrically connected between the second side of the panel equivalent capacitor and a fourth voltage;
- a seventh switch electrically connected between the second side of the panel equivalent capacitor and a third node;
- an eighth switch electrically connected between the third node and a fifth voltage;
- a second capacitor electrically connected between the third node and a fourth node;
- a ninth switch electrically connected between the fourth node and the fifth voltage;
- and
- a second inductor and a tenth switch electrically connected in series between the fourth node and a sixth voltage.
11 more elements
A plasma display panel driving circuit comprising:
- a panel equivalent capacitor having a first side and a second side;
- a first switch electrically connected between the first side of the panel equivalent capacitor and a first voltage;
- a second switch electrically connected between the second side of the panel equivalent capacitor and a second voltage;
- a third switch electrically connected between the second side of the panel equivalent capacitor and a first node;
- a fourth switch electrically connected between the first side of the panel equivalent capacitor and the first node;
- a fifth switch electrically connected between the first node and a third voltage;
- a sixth switch electrically connected between the third voltage and a second node;
- a capacitor electrically connected between the first node and the second node;
- and
- an inductor and a seventh switch electrically connected in series between the second node and a fourth voltage.
7 more elements
Dependencies are inferred from the claim text.