A display apparatus includes a face plate that constitutes a part of a
vacuum envelope, a phosphor layer formed on an inner surface of the face
plate, and an electron beam source that emits electron beams to the
phosphor layer. The face plate includes a light-emitting glass layer
containing a light-emitting substance that emits light when electron
beams are projected thereon. By extracting energy of electron beams,
which have reached the face plate, as light, it is possible to reduce
browning that occurs in the face plate and improve brightness of a
display image significantly.