Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-09-26
1997-09-23
Powell, Mark R.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 68, 345 66, 3151694, G09G 328
Patent
active
056709749
ABSTRACT:
The plasma display panel driver circuit disclosed includes a panel inter-electrode capacitor, a charging/discharging circuit, and a voltage clamp circuit. The panel inter-electrode capacitor is provided between scanning and sustain electrodes of a panel. The charging/discharging circuit is connected in parallel with the panel inter-electrode capacitor and formed by a combination of a coil, FET switches and reverse current blocking diodes. The voltage clamp circuit includes four switches connected to terminals of the panel inter-electrode capacitor. The panel inter-electrode capacitor, together with a series circuit of the coil and the FET switches, forms a parallel resonance circuit. The panel inter-electrode capacitor 40 is repeatedly charged and discharged through the control of the switches with switch drive inputs. In the driving of a plasma display panel, ineffective power is reduced when charging and discharging the panel inter-electrode capacitor.
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"Energy Recovery Sustain Circuit for the AC Plasma Display", L.F. Weber and M.B. Wood, SID 87 Digest pp. 92-95.
Ohba Masataka
Sano Yoshio
Loui Martin
NEC Corporation
Powell Mark R.
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