Patent Number: 6,309,992

Title: 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%.sub.(460 nm) of 50-75% at the wavelength of 460 nm or a glass film having a spectral transmittance T%.sub.(460 nm) higher than a spectral transmittance T%.sub.(550 nm) at the wavelength of 550 nm and a spectral transmittance T%.sub.(620 nm) 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 .mu.m as the glass film.

Inventors: Morita; Yoshiro (Moriyama, JP), Oshita; Hiroyuki (Otsu, JP), Ohji; Masahiko (Moriyama, JP), Hadano; Kazuo (Otsu, JP)

Assignee: Nippon Electric Glass Co., Ltd.

International Classification: C03C 17/04 (20060101); C03C 17/02 (20060101); C03C 8/00 (20060101); C03C 8/04 (20060101); C03C 8/10 (20060101); C03C 003/078 (); C03C 004/02 ()

Expiration Date: 10/30/2018