Capacitive load driving circuit driving capacitive loads such as pixels in plasma display panels and plasma display apparatus having the capacitive load driving circuit
AssigneeFujitsu Hitachi Plasma Display Limited
InventorsMakoto Onozawa, Yoshinori Okada, Haruo Koizumi
Life of this patent
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Abstract
A capacitive load driving circuit has an input terminal, a front-edge delay circuit, a back-edge delay circuit, an amplifying circuit, and an output switch device driven by the amplifying circuit. The front-edge delay circuit delays a front edge of an input signal input via the input terminal, the back-edge delay circuit delays a back edge of the input signal, and the amplifying circuit amplifies a drive control signal obtained through the front-edge delay circuit and the back-edge delay circuit.
Claims51
A capacitive load driving circuit comprising:
- an input terminal;
- a front-edge delay circuit for delaying a front edge of an input signal input via said input terminal;
- a back-edge delay circuit for delaying a back edge of said input signal;
- an amplifying circuit for amplifying a drive control signal obtained through said front-edge delay circuit and said back-edge delay circuit;
- and
- an output switch device which is driven by said amplifying circuit.
A capacitive load driving circuit comprising:
- an input terminal;
- a front-edge delay circuit for delaying a front edge of an input signal input via said input terminal;
- a pulse width adjusting circuit for generating a drive control signal having a prescribed pulse width from a delayed signal obtained through said front-edge delay circuit;
- an amplifying circuit for amplifying said drive control signal;
- and
- an output switch device which is driven by said amplifying circuit.
A plasma display apparatus comprising:
- a plurality of X electrodes;
- a plurality of Y electrodes which are arranged substantially parallel to said plurality of X electrodes, and which produce a discharge between said plurality of Y electrodes and said plurality of X electrodes;
- an X-electrode driving circuit which applies a discharge voltage to said plurality of X electrodes;
- and
- a Y-electrode driving circuit which applies a discharge voltage to said plurality of Y electrodes, and wherein said X-electrode driving circuit or said Y-electrode driving circuit is constructed using a capacitive load driving circuit, wherein said capacitive load driving circuit comprises:
- an input terminal;
- a front-edge delay circuit for delaying a front edge of an input signal input via said input terminal;
- a back-edge delay circuit for delaying a back edge of said input signal;
- an amplifying circuit for amplifying a drive control signal obtained through said front-edge delay circuit and said back-edge delay circuit;
- and
- an output switch device which is driven by said amplifying circuit.
A plasma display apparatus comprising:
- a plurality of X electrodes;
- a plurality of Y electrodes which are arranged substantially parallel to said plurality of X electrodes, and which produce a discharge between said plurality of Y electrodes and said plurality of X electrodes;
- an X-electrode driving circuit which applies a discharge voltage to said plurality of X electrodes;
- and
- a Y-electrode driving circuit which applies a discharge voltage to said plurality of Y electrodes, and wherein said X-electrode driving circuit or said Y-electrode driving circuit is constructed using a capacitive load driving circuit, wherein said capacitive load driving circuit comprises:
- an input terminal;
- a front-edge delay circuit for delaying a front edge of an input signal input via said input terminal;
- a pulse width adjusting circuit for generating a drive control signal having a prescribed pulse width from a delayed signal obtained through said front-edge delay circuit;
- an amplifying circuit for amplifying said drive control signal;
- and
- an output switch device which is driven by said amplifying circuit.
Dependencies are inferred from the claim text.