Dielectric forming material and dielectric forming paste for use in plasma display panel

Abstract

A dielectric forming material for use as a transparent dielectric layer formed on an inside surface of a front glass substrate in a plasma display panel comprises powder of colored glass. The powder of colored glass comprises a base glass and coloring ingredients added thereto. The coloring ingredients comprise CoO and NiO. The powder of colored glass provides a glass film having a spectral transmittance T%,of 50-75% at the wavelength of 460 nm or a glass film having a spectral transmittance T%,higher than a spectral transmittance T%,at the wavelength of 550 nm and a spectral transmittance T%,at the wavelength of 620 nm. The glass film is formed by applying the colored glass powder onto a soda lime glass plate having a thickness of 1.7 mm and by baking the colored glass powder to form a baked film having a thickness of 20-40 &mgr;m as the glass film.