Samsung Sdi Co., Inc.

Samsung Electronics Co., Ltd.

Kwang-Ho Jin

Jin-Sung Kim

Jea-Hyuk Lim

Hak-Ki Choi

Jin-Ho Yang

Jin-Boo Son

Sang-Chul Kim

Jin-Won Nam

Sun-Kyung Ahn

Sung-Un Kim

Seung-Pil Mun

A plasma display device includes: a sustain drive unit that applies a sustain pulse having a first voltage and a second voltage lower than the first voltage to a plurality of first electrodes; a scan drive unit including a plurality of selection circuits coupled to the first electrodes and each including first and second switches; and a clamping unit including a clamping diode coupled to at least one of the selection circuits and clamps the voltage of the first electrode at the first voltage when it exceeds the first voltage. The plasma display device can prevent overshoot that can occur when the first voltage of the sustain pulse is applied to the first electrode in a sustain period so as to apply a stable discharge pulse. The magnitude of the overshoot may depend on the distance between the scan driving board and each of the plurality of selection circuits IC.

Plasma display device and driving method thereof

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 PDP driving circuit for a stable operation of a ramp pulse. A capacitor having a temperature characteristic opposite to a temperature characteristic of a part coupled to a switch that operates as a constant current source for generation of a ramp pulse is arranged in the driving circuit for generating a ramp pulse. The ramp pulse linearly increases or decreases a panel voltage of the PDP with respect to time. Parts having opposite temperature characteristics are coupled in parallel to control variation of a gradient of the ramp pulse so that values of the parts may not be varied depending on the temperature changes. Thus, stable operation of the ramp pulse is obtained.

Plasma display panel driving circuit

An apparatus for driving a plasma display panel PDP that prevents a scan driving circuit from being damaged includes a plurality of address electrodes and scan electrodes and sustain electrodes arranged in a zig-zag pattern so as to make pairs with each other. The apparatus includes an address driving circuit, for applying an address signal for selecting a discharge cell to the address electrodes, and a sustain driving circuit and a scan driving circuit for alternately applying a sustain-discharge voltage to the scan electrodes and to the sustain electrodes, to thus sustain-discharge the selected discharge cell. The scan driving circuit includes a protecting circuit for uniformly sustaining an electric potential difference between both ends of the scan driving circuit so that the electric potential difference is no more than a rated voltage of the scan driving circuit.

Apparatus and method for driving plasma display panel

A discharge display apparatus includes a discharge display panel; a controller; an address driver, which generate display data signals by processing an address signal generated by the controller and applies the display data signals to address electrode lines of the discharge display panel; and a power recovery circuit of the address driver, where operational timing of the power recovery circuit varies in response to the display data signals applied to the address electrode lines.

Discharge display apparatus minimizing addressing power and method of driving the same

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.

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Cheonan, South Korea

Kwang-Ho Jin