초록 ▼

There is disclosed a flat panel display which includes an evacuated display envelope having a flat front wall, a rear wall spaced apart from the front wall having sides of extremely short length compared to the front dimensions of the display. A phosphor screen is provided on the inner surface of th

There is disclosed a flat panel display which includes an evacuated display envelope having a flat front wall, a rear wall spaced apart from the front wall having sides of extremely short length compared to the front dimensions of the display. A phosphor screen is provided on the inner surface of the front wall and hence vertical phosphor columns disposed over said inner surface of said front wall. The display employs a single unmodulated electron gun on one lateral side of the display for providing an unmodulated electron beam which beam is bent both vertically and horizontally to impinge in a direction transverse to the front wall and to enter a color modulation means interposed adjacent to the beam as deflected to impinge upon selected portions of the phosphor elements to produce corresponding illumination intensities.

대표청구항 ▼

A flat panel display, comprising: an evacuated display envelope having a relatively flat front wall, a rear wall spaced apart in a depthwise direction from the front wall and substantially coextensive therewith, and lateral sides enclosing the space defined between the front and rear walls, a phosph

A flat panel display, comprising: an evacuated display envelope having a relatively flat front wall, a rear wall spaced apart in a depthwise direction from the front wall and substantially coextensive therewith, and lateral sides enclosing the space defined between the front and rear walls, a phosphor screen provided on the inner surface of said front wall substantially in one plane and having a matrix of phosphor elements arranged in horizontal rows and vertical columns disposed over said inner surface of said front wall, an electron gun on one lateral side of the display envelope for providing an electron beam on a first path into the display envelope along a vertical direction substantially parallel to the plane of the screen, vertical deflection means for deflecting said beam over the horizontal rows successively in the vertical direction, said vertical deflection means including an initial deflection plate adjacent said first path of said beam from said electron gun to which incremental deflection voltages are applied for deflection said beam along different incremental trajectories toward said one lateral side of said display envelope, and a vertical reflection plate at said one lateral side of said display envelope which is biased with a voltage for reflecting said beam on said different incremental trajectories toward the respective horizontal rows, horizontal deflection means for deflecting said beam on said different trajectories to sweep across the phosphor elements of the respective horizontal rows, said horizontal deflection means including a horizontal reflection plate disposed toward the rear wall of said display envelope and having a horizontal sweep voltage applied thereto for deflecting said beam toward said phosphor screen disposed at said front wall of said display envelope, and color modulation means interposed between said phosphor screen and said beam as deflected by said horizontal deflection means for controlling said beam to impinge upon selected portions of respective phosphor elements to produce the corresponding illumination intensities.