Spacer and image display panel using the same

An image display panel comprising:

• a back panel including an insulating substrate, a plurality of scanning lines provided for a main surface of the insulating substrate, extending in a first direction, and arranged in a second direction intersecting with the first direction, a plurality of signal lines extending in the second direction and arranged in the first direction, and an electronic source provided near the intersection of the scanning line and the signal line;
• a front panel including a transparent insulating substrate, a fluorescent material layer provided for a main surface of the transparent insulating substrate and forming a pair with each of the electronic sources, an anode;
• a sealing frame inserted into the inner periphery at ends of the back panel and the front panel disposed such that their main surfaces are opposed with a predetermined gap between them, to form a decompression vessel together with the panels;
• and
• a spacer which holds the gap between the back panel and the front panels;
• wherein the spacer comprises phosphate glass containing a transition metal element;
• and
• wherein the spacer comprises at least one of (a) 20 to 40 wt % of V2O5, 30 to 45 wt % of P2O5, 1 to 20 wt % of WO3, and 5 to 20 wt % of BaO, (b) 20 to 45 wt % of WO3, 20 to 40 wt % of P2O5, 10 to 25 wt % of V2O5, and 10 to 25 wt % of BaO, (c) 20 to 45 wt % of WO3, 25 to 40 wt % of P2%, 10 to 25 wt % of V2O5, 10 to 25 wt % of BaO, and 5 to 15 wt % of MoO3, and (d) 1 to 10 wt % of SrO, and 1 to 5 wt % of Gd2O3, and 0.1 to 1.0 wt % of CeO2.

A display comprising:

• a back panel including an insulating substrate, a plurality of scanning lines provided for a main surface of the insulating substrate, extending in a first direction, and arranged in a second direction intersecting with the first direction, a plurality of signal lines extending in the second direction and arranged in the first direction, and an electronic source provided near the intersection of the scanning line and the signal line;
• a front panel including a transparent insulating substrate, a fluorescent material layer provided for a main surface of the transparent insulating substrate and forming a pair with each of the electronic sources, an anode;
• a sealing frame inserted into the inner periphery at ends of the back panel and the front panel disposed such that their main surfaces are opposed, to form a decompressed container together with the panels;
• and
• a spacer standing structure bonded between the back panel and the front panel and formed of a spacer which holds a gap at a predetermined value between the panels and an adhesion layer;
• wherein the spacer is formed of core glass and coat glass which covers a surface of the core glass;
• wherein the adhesion layer which directly bonds the spacer between the back panel and the front panel is formed of glass of the same type as that of the coat glass;
• and
• wherein at least one of (a) each of the coat glass and the adhesion layer includes vanadium and phosphorus, and (b) a diffusion layer is provided between the adhesion layer and the coat glass, the diffusion layer including the phosphorus, the content of the phosphorus being different from that of the adhesion layer or the coat glass.

An image display comprising:

• a back substrate having a plurality of cathode electrodes and a plurality of electronic sources formed thereon;
• a front substrate having an anode electrode and a plurality of fluorescent materials opposed to the electronic sources;
• and
• a plurality of spacers which hold a gap between the front substrate and the back substrate,
• wherein the spacer is fixed to each of the back substrate and the front substrate with a bonding material, the spacer comprises glass having a composition of 25 to 40 wt % of WO3, 10 to 20 wt % of V2O5, 0 to 15 wt % of MoO3, 25 to 35 wt % of P2O5, and 10 to 20 wt % of BaO, and the bonding material comprises glass having a composition of 55 to 65 wt % of V2O5, 20 to 30 wt % of P2O5, 5 to 15 wt % of Sb2O3, 3 to 10 wt % of BaO, and 3 to 10 wt % of TeO2.