Lg Electronics Inc.

Ju Won Seo

Yun Kwon Jung

Bong Koo Kang

Young Hwan Kim

Sang Jin Yun

Jang Hwan Cho

Gop Sick Kim

Sang Yoon Soh

An energy recovery circuit is provided that includes: a panel capacitor formed equivalently in a scan electrode and a sustain electrode, a scan electrode driver installed at a side of the scan electrode of the panel capacitor to supply a sustaining pulse to the side of the scan electrode, and a sustain electrode driver installed at a side of the sustain electrode of the panel capacitor to supply the sustaining pulse to the side of the sustain electrode. The energy recovery circuit may further include a first diode coupled to the scan electrode side of the panel capacitor, a second diode coupled to the sustain electrode side of the panel capacitor, a first inductor commonly coupled to the sustain electrode side and the scan electrode side of the panel capacitor, a path providing part coupled to the first inductor, and a single source capacitor connected to the path providing part.

Energy recovery circuit and energy recovering method using the same

A plasma display panel employs a voltage circuit having an input and an output, the voltage circuit configured for supplying a negative voltage for an electrode. The plasma display panel also employs a power supply that has a positive terminal and a negative terminal, where the negative terminal is connected to the input of the voltage circuit. The power supply is otherwise configured relative to the voltage circuit such that the voltage difference between the output and the input of the voltage circuit is fixed as a function of the power supply. By fixing this voltage difference, parasitic capacitance is minimized, power consumption and calorific value are reduced, and the plasma display panel operates in a more stable manner.

Plasma display

A method of driving a plasma display panel wherein a selective inversion system is used to perform an address operation. In the method, a reset step makes an entire write discharge of the cells to form wall charges. An address step makes an address discharge of specific cells of the cells undergoing said entire write discharge to invert the polarities of the wall charges of said specific cells and to keep the polarities of the wall charges according to said entire write discharge as they are at the remaining cells excluding said specific cells. A sustain step makes a sustain discharge of only the specific cells having the inverted wall charge polarity by a sustain pulse. Accordingly, a data is written by the selective inversion addressing method to permit a high-speed driving and to prevent a contrast deterioration.

Method of driving plasma display panel using selective inversion address method

Growing community of inventors

Pohang-si, South Korea

Ju Won Seo