The present invention discloses a fluorescent-substance light emitting element
comprising a cold cathode type emitter section for emitting electrons, a fluorescent-substance
layer configured to emit light by collision with electrons emitted from the emitter
section, and an anode section disposed to be opposed to the emitter section and
having an anode electrode and the fluorescent-substance layer provided inside of
the anode electrode, wherein a porous-substance layer, comprising an electrically
insulative porous substance which is a solid substance having a solid skeletal
part formed into a three-dimensional network shape and a hole extending continuously
in the form of a mesh of the solid skeletal part, is sandwiched between the emitter
section and the anode section.
