Patent ID: 6879097
Filing Date: 2005-04-12
Classification: H01J

Abstract:
1. A flat-panel display for producing an image, the display comprising: an electron-emitting device comprising (a) at least three laterally separated electron-emissive regions arranged in a line extending generally in a main direction, each pair of consecutive electron-emissive regions being at a center-to-center spacing which is at least 3% greater in the main direction for one pair of consecutive electron-emissive regions than for another pair of consecutive electron-emissive regions, and (b) a set of control electrodes for selectively extracting electrons from the electron-emissive regions or for selectively preventing electrons emitted by the electron-emissive regions from passing the control electrodes; a light-emitting device comprising at least three light-emissive regions arranged in a line extending generally in the main direction, each light-emissive region situated generally opposite a corresponding different one of the electron-emissive regions for emitting light to produce at least part of a dot of the image upon being struck by electrons emitted by the corresponding electron-emissive regions; and an electron-focusing system, independent of the control electrodes, for focusing electrons emitted by each electron-emissive region toward the corresponding light-emissive region, the electron-focusing system having at least three focus openings arranged in a line extending generally in the main direction, each focus opening located at least partially above a corresponding different one of the electron-emissive regions so that electrons emitted by each electron-emissive region pass at least partially through the corresponding focus opening.