Enamel composition, in particular intended for covering a glass pane of a fireplace insert, comprising at least one glass frit, at least one pigment in a content varying from 40 to 65% of the total weight of the enamel, preferably from 45 to 60%, and optionally at least one vehicle or medium, characterized in that the glass frit comprises the following constituents, within the limits defined below, limits included, expressed as percentages by weight of the total weight of the frit: TABLE-US-00001 SiO.sub.2 45-65%  Al.sub.2O.sub.3 0-13% B.sub.2O.sub.3 23-55%  Na.sub.2O 0-10% K.sub.2O 0-10% Li.sub.2O  0-10%.

Enamel composition, in particular intended for covering a glass pane of a fireplace insert, comprising at least one glass frit, at least one pigment in a content varying from 40 to 65% of the total weight of the enamel, preferably from 45 to 60%, and optionally at least one vehicle or medium, characterized in that the glass frit comprises the following constituents, within the limits defined below, limits included, expressed as percentages by weight of the total weight of the frit: TABLE-US-00001 SiO.sub.2 45-65%  Al.sub.2O.sub.3 0-13% B.sub.2O.sub.3 23-55%  Na.sub.2O 0-10% K.sub.2O 0-10% Li.sub.2O  0-10%.

Provided is a method for manufacturing a display member, the method being capable of densely packing a composition, which contains an inorganic material including a phosphor, into cells separated by preformed barrier ribs, without damaging the barrier ribs. The method for manufacturing a display member according to the present invention includes packing a composition, which contains an inorganic material, into cells separated by barrier ribs, under an isostatic pressure.

Provided is a method for manufacturing a display member, the method being capable of densely packing a composition, which contains an inorganic material including a phosphor, into cells separated by preformed barrier ribs, without damaging the barrier ribs. The method for manufacturing a display member according to the present invention includes packing a composition, which contains an inorganic material, into cells separated by barrier ribs, under an isostatic pressure.

A method for preparing a laminate substrate for a light emitting device includes providing a glass substrate having a refraction index, at 550 nm, of between 1.45 and 1.65, coating a glass frit having a refractive index, at 550 nm, of at least 1.7 onto the glass substrate, firing the resulting frit coated glass substrate at a temperature above the Littleton temperature of the glass frit thereby forming a first high index enamel layer, coating a metal oxide layer onto the first high index enamel layer, and firing the resulting coated glass substrate at a temperature above the Littleton temperature of the glass frit, thereby making react the metal oxide with the underlying first high index enamel layer and forming a second high index enamel layer with a plurality of spherical voids embedded in the upper section of the second high index enamel layer near the interface with air.

A method for preparing a laminate substrate for a light emitting device includes providing a glass substrate having a refraction index, at 550 nm, of between 1.45 and 1.65, coating a glass frit having a refractive index, at 550 nm, of at least 1.7 onto the glass substrate, firing the resulting frit coated glass substrate at a temperature above the Littleton temperature of the glass frit thereby forming a first high index enamel layer, coating a metal oxide layer onto the first high index enamel layer, and firing the resulting coated glass substrate at a temperature above the Littleton temperature of the glass frit, thereby making react the metal oxide with the underlying first high index enamel layer and forming a second high index enamel layer with a plurality of spherical voids embedded in the upper section of the second high index enamel layer near the interface with air.

A method of decorating a glass substrate having a coating, said method comprising: applying a paste onto at least a portion of said coating in a desired pattern; drying said paste to form a dried paste in said desired pattern; and firing said dried paste to form an enamel in said desired pattern, said enamel being directly bonded to said glass substrate by dissolution of the portion of the coating to which the paste is applied during the firing step. The paste comprises a solids portion dispersed in a dispersion medium, said solids portion including a composition comprising: 10 to 40 mol % ZnO; 20 to 40 mol % B.sub.2O.sub.3; 25 to 65 mol % Bi.sub.2O.sub.3, TeO.sub.2, or PbO, or mixtures thereof; and to 15 mol % Al.sub.2O.sub.3.

A method of decorating a glass substrate having a coating, said method comprising: applying a paste onto at least a portion of said coating in a desired pattern; drying said paste to form a dried paste in said desired pattern; and firing said dried paste to form an enamel in said desired pattern, said enamel being directly bonded to said glass substrate by dissolution of the portion of the coating to which the paste is applied during the firing step. The paste comprises a solids portion dispersed in a dispersion medium, said solids portion including a composition comprising: 10 to 40 mol % ZnO; 20 to 40 mol % B.sub.2O.sub.3; 25 to 65 mol % Bi.sub.2O.sub.3, TeO.sub.2, or PbO, or mixtures thereof; and to 15 mol % Al.sub.2O.sub.3.

A glass frit for forming a black enamel coating includes Si at 6.5 mol % to 6.9 mol %, B at 9.0 mol % to 9.3 mol %, Bi at 13.0 mol % to 13.4 mol %, Zn at 6.0 mol % to 6.3 mol %, and Al at 1.5 mol % to 2.0 mol %, and Co, Ni, and Fe, wherein a total amount of Co, Ni, and Fe is 2.9 mol % to 3.5 mol % of the glass frit in a molar ratio.

A glass frit for forming a black enamel coating includes Si at 6.5 mol % to 6.9 mol %, B at 9.0 mol % to 9.3 mol %, Bi at 13.0 mol % to 13.4 mol %, Zn at 6.0 mol % to 6.3 mol %, and Al at 1.5 mol % to 2.0 mol %, and Co, Ni, and Fe, wherein a total amount of Co, Ni, and Fe is 2.9 mol % to 3.5 mol % of the glass frit in a molar ratio.