Control circuit drive circuit for a plasma panel

Details Control circuit drive circuit for a plasma panel Control circuit drive circuit for a plasma panel

2006-10-17

2006-10-17

Vu, David (Department: 2828)

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

C315S169400, C345S076000, C345S077000

Reexamination Certificate

active

07122968

ABSTRACT:
The invention concerns a drive circuit for a plasma panel consisting of cells arranged at the intersections of lines and columns, comprising, for each column of the panel, a column drive unit (14′) for selecting the column by applying a voltage window, the column having a different capacitance (C2) depending on whether or not the neighboring columns are selected, each drive unit (14′) comprising first elements (T1, C, CS1) for changing the capacitance in a first predetermined time interval during the low-to-high transition of the voltage window, and second elements (T2, 28) for discharging said capacitance in a second predetermined time interval during the high-to-low transition of the voltage window, the second elements being controlled on the basis of an estimation of the capacitance obtained from data (Qi−1, Qi+1) indicating whether or not the neighboring columns of said columns have been selected.

REFERENCES:
patent: 4492957 (1985-01-01), Marentic
patent: 4496879 (1985-01-01), Suste
patent: 4550274 (1985-10-01), Weber
patent: 5081400 (1992-01-01), Weber et al.
patent: 5909199 (1999-06-01), Miyazaki et al.
patent: 6642663 (2003-11-01), Okamura et al.
International Search Report from application No. PCT/FR 01/03574.

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