Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Jea-Hyuk Lim

Jin-Boo Son

Kwang-Ho Jin

Jin-sung Kim

Jin-Sung Kim

Chung-Wook Roh

Jung-Pil Park

Jin-Won Nam

Sung-Un Kim

Disclosed is a PDP driving method having a misfiring erase period between reset and address periods. Large amounts of positive and negative charges are respectively formed on scan and sustain electrodes because of an unstable reset operation in the reset period. Because of the charges, discharging can occur between the scan and sustain electrodes in the sustain period even without addressing in the address period. In the misfiring erase period, a voltage is applied between the scan and sustain electrodes to generate discharging and respectively form negative and positive charges on the scan and sustain electrodes. An erase pulse is then applied to erase the negative and positive charges respectively formed on the scan and sustain electrodes.

Plasma display panel and driving method thereof

A scan electrode driving apparatus of an AC PDP including a plurality of address electrodes and a plurality of scan electrodes and sustain electrodes alternately arranged to make pairs with each other, and having a panel capacitor between the scan electrodes and the sustain electrodes, includes a power recovery unit for supplying power to a panel in order to apply waveforms for sustain-discharge and recovering and re-using the supplied power, a ramp waveform applier for supplying a pulse signal for resetting the states of the respective discharge cells on the basis of the power received from the power recovery unit, and a scan pulse generator for accumulating a wall charge into the addressed discharge cells.

Apparatus and method for driving scan electrodes of alternating current plasma display panel

A method for driving a plasma display panel includes applying an erasing pulse, a reset pulse and a scan pulse respectively in each of an erasing period, a reset period and a scan period. In a reset period, a reset pulse with a waveform of a sloped ramp pulse is applied to the scan electrode. The sloped ramp pulse induces a discharge between the scan electrode and the address electrode in the middle of the period while the pulse voltage increases. This prevents extremely high discharges between the scan electrode and the address electrode and improves the contrast of the display. An apparatus that implements such method is also disclosed.

Method and apparatus for driving plasma display panel operating with middle discharge mode in reset period

The present invention discloses an energy recovery sustain circuit for an AC plasma display panel in which includes one energy recovery sustain circuit incorporating X and Y electrodes. The invention includes a load capacitor, first and fourth switching elements to charge the load capacitor up to a predetermined positive voltage, a second and third switching elements to charge the load capacitor up to a predetermined negative voltage, a fifth switching element to apply an external voltage to the load capacitor to continually sustain the predetermined positive or negative voltage in the load capacitor during a certain period, an inductor for generating the certain leveled positive or negative voltage to charge the load capacitor, and first and second capacitors for charging or discharging a current flowing through the inductor. The invention has a simplified configuration, low production cost, and high reliability.

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Cheonan, South Korea

Jea-Hyuk Lim