Image display apparatus and image display method

#1. Field of the Invention

#The present invention relates to a driving circuit for an image display apparatus, an image display apparatus using this circuit, and a driving method for them.

#2. Description of the Related Art

#The accompanying drawings, which are incorporated in and constitute part of the specification, illustrate embodiments of the invention and, together with the descriptions, serve to explain the principle of the invention.

#FIG. 1 is a block diagram showing the circuit arrangement of an image display apparatus according to the first reference example of the present invention;

#FIG. 2 is a timing chart for explaining the problem of the present invention;

#A display device can output a desired beam by applying a driving voltage or driving current and performing pulse width modulation. In addition, a method of applying the driving current or a method of limiting the current in the case of applying the driving voltage can be employed to suppress ringing upon application (rise) of a pulse that is caused by the inductance component of a wiring having a finite length from the driving means to a multi electron source, a capacitance component between adjacent wirings, a stray capacitance component, and the like. At the application end (fall) of a pulse, a switching means can be employed to apply a voltage bias as a low impedance in order to quickly remove electrical charges accumulated in the stray capacitance and shorten the fall time. These means allow driving each device while preventing ringing which exceeds the rated value of an application voltage to the multi electron source.

#However, even this arrangement suffers other problems.

#That is, as shown in FIG. 2, when pulse signals having different pulse widths are applied between two (or more) adjacent wirings, a longer-width pulse is influenced by an adjacent pulse signal which falls faster due to an inter-wiring capacitance, and the signal level decreases to reduce the effective application amount. In gradation expression with the pulse width, this phenomenon causes a gradation error under the influence of an adjacent wiring. Particularly when a large-screen panel is to be constituted, the inter-wiring capacitance increases, resulting in a large gradation error.