Pilot driver for plasma display device

Details Pilot driver for plasma display device Pilot driver for plasma display device

G - Physics

09

G

375/41

G09G 3/28 (2006.01)

Patent

CA 1165480

ABSTRACT OF THE DISCLOSURE Disclosed is a pilot cell driver for a capacitive memory plasma display device having three output states: high, low, and floating. The floating state of the pilot cell driver is used in combination with a feedback of the plasma display panel sustain voltage to create a third voltage level on the pilot cell drive line for use in rewriting the pilot cells. The pilot cell driver is comprised of a pull-up switch and pull-down switch. After the pull-up switch is activated for a short period of time, the output of the pilot cell driver relaxes to the floating state. The floating state voltage is achieved, for example, on a vertically oriented pilot cell drive line by coupling to a horizontal sustain drive voltage which switches from the pull-up voltage to the pull- down voltage during the relaxation time of the pilot cell driver. By capacitively coupling the horizontal sustain voltage to the vertical pilot cell drive electrode, the floating state voltage is achieved.

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