Multiplex anode matrix vacuum fluorescent display and the driving device therefor
AssigneeFutaba Denshi Kogyo K.K.
InventorsTadashi Mizohata, Minoru Hiraga
Life of this patent
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Abstract
A multiplex anode matrix fluorescent display capable of allowing a duty cycle thereof to be multiple times that of the prior art multiplex anode matrix fluorescent display is provided without changing the structure of the prior art multiplex anode matrix fluorescent display.
Claims9
A multiplex anode matrix fluorescent display comprising:
- a plurality of anode electrodes and a multiple number of grid electrodes arranged in a form of a matrix, the grid electrodes being arranged in such a way that k column of the anode electrodes corresponds to each grid electrode, k being an even positive integer, and the anode electrodes and the grid electrodes being divided into a number of regions in the direction of row;
- separate anode wirings formed on each of the regions;
- and
- a grid driver and an anode driver, wherein the grid driver simultaneously applies a driving voltage to two columns of adjacent grid electrodes in each of the regions by scanning the grid electrodes in a row direction, the anode driver activates a plurality columns of anode electrodes located at the two adjacent grid electrodes, to which the driving voltage is applied.
A method for use in a multiplex anode matrix fluorescent display including a plurality of anode electrodes and a multiple number of grid electrodes arranged in a form of a matrix, the grid electrodes being arranged in such a way that k column of the anode electrodes corresponds to each grid electrode, k being an even positive integer, and the anode electrodes and the grid electrodes being divided into a number of regions in the direction of row;
- separate anode wirings formed on each of the regions;
- and a grid driver and an anode driver,
- wherein the grid driver simultaneously applies a driving voltage to two columns of adjacent grid electrodes in each of the regions by scanning the grid electrodes in a row direction, the anode driver activates a plurality columns of anode electrodes located at the two adjacent grid electrodes, to which the driving voltage is applied.
An anode matrix fluorescent display, comprising:
- a plurality of anode electrodes linearly arranged, the anode electrodes being divided into a number of sectors each of which includes successive anode electrodes and is divided into a multiplicity of groups, each of the groups having two sections each of which contains k anode electrodes, k being an even positive number;
- a number of separated anode wirings, each anode wiring being provided to one of the sectors;
- and
- a grid electrode provided to each section,
- wherein anode electrodes disposed at a same position in the respective groups of each sector are electrically connected to each other by a corresponding anode wiring and 2k anode electrodes in each group are independently driven from each other;
- a grid driver for simultaneously applying a driving voltage to drive grid electrodes of two adjacent sections disposed in each sector by scanning grid electrodes one by one;
- and
- an anode driver for simultaneously driving only k anode electrodes disposed at the center of the two adjacent sections.
Dependencies are inferred from the claim text.