Patent ID: 7834536
Filing Date: 2010-11-16
Classification: H01J

Abstract:
1. A light-emitting apparatus having at least a cold-cathode electron emission source and a phosphor on an anode side oppositely-disposed within a vacuum vessel for exciting said phosphor with a field-emitted electron beam from said cold-cathode electron emission source and emitting an excitation light to an outside of said light-emitting apparatus through a transparent base material disposed at said anode side, comprising: a light-emitting area with said phosphor applied thereon and an unobstructed area without said phosphor applied thereon on an inner surface of the transparent base material forming an illustration surface; and a reflection surface in said vacuum vessel for reflecting the excitation light from said phosphor toward the side of the electron beam-irradiated surface of said phosphor, and releasing the excitation light to the outside through said unobstructed area of said transparent base material, said reflection surface being formed on a reflection plate provided between a gate electrode and said anode side, said gate electrode being disposed between said cold-cathode electron emission source and said phosphor for controlling a voltage applied to said cold-cathode electron emission source, said reflection plate being disposed as a separate member from said gate electrode, wherein said reflection plate comprises an aperture corresponding to an aperture of said gate electrode, and a slope, said slope being spaced farther apart from said anode side as said slope approaches said aperture of said reflection plate, wherein said reflection surface is formed on said slope, and wherein a circumferential edge of said slope is electrically connected to said anode side.